CN118800180A - A method for screen display and related device - Google Patents

Abstract

The present application provides a method and related device for screen display, which are applied to electronic devices, and the method includes: obtaining screen brightness and reference factors, the reference factors including influencing parameters and/or image features of the image to be displayed; based on the screen brightness and the reference factors, determining the voltage difference for driving the screen to emit light. The voltage difference for driving the screen to emit light is determined and adjusted in combination with the screen brightness and more reference factors, so that the power consumption of the screen is reduced while meeting the display requirements of the screen, thereby extending the standby time of the electronic device and improving the user experience.

Description

A method for screen display and related device

Technical Field

The present application relates to the field of terminal technology, and in particular to a method for screen display and related devices.

Background Art

With the increasing development of terminal technology, people have higher and higher requirements for screens used in electronic devices. For example, more and more electronic devices are equipped with full-screen and other screens with high screen-to-body ratios.

The power consumption and battery life of electronic devices are one of the important indicators that users pay attention to, and the power consumption of the screen accounts for a large proportion of the battery life power consumption. However, as the screen-to-body ratio increases, the power consumption required by the screen when working also increases.

Therefore, how to reduce the power consumption of the screen of the electronic device has become an urgent problem to be solved.

Summary of the invention

The present application provides a method and related devices for screen display, in order to dynamically adjust the voltage difference driving the screen to emit light and reduce the power consumption of the screen.

In the first aspect, the present application provides a method for screen display, which can be executed by an electronic device equipped with a screen (for the sake of ease of description, the electronic device equipped with a screen will be referred to as an electronic device in the present application), or the method can also be executed by a component configured in the electronic device (such as a processor, chip or chip system, etc.), or it can also be implemented by a logic module or software that can realize all or part of the functions of the electronic device, and the embodiments of the present application are not limited to this.

Exemplarily, the method includes: acquiring screen brightness and reference factors, the reference factors including influencing parameters and/or image features of an image to be displayed; and determining a voltage difference for driving the screen to emit light based on the screen brightness and the reference factors.

Based on the above scheme, the voltage difference that drives the screen to emit light is determined and adjusted in combination with the screen brightness and more reference factors, so that the power consumption of the screen can be reduced while meeting the display requirements of the screen, thereby extending the standby time of the electronic device and improving the user experience.

In combination with the first aspect, in some possible implementations, the influencing parameters include one or more of the following: frame rate, screen temperature, screen usage time, display mode, or characteristics of the screen.

In combination with the first aspect, in some possible implementations, the image feature includes a maximum value of grayscale, an average pixel level (APL), or a peak brightness.

In combination with the first aspect, in some possible implementations, the reference factors include image features, and based on the screen brightness and the reference factors, the voltage difference for driving the screen to emit light is determined, including: based on the screen brightness, the image features and a first mapping relationship, the voltage difference for driving the screen to emit light is determined; wherein the first mapping relationship includes a correspondence between multiple combinations of screen brightness and image features and multiple voltage differences.

In combination with the first aspect, in some possible implementations, the reference factors include image features, and based on the screen brightness and the reference factors, a voltage difference for driving the screen to emit light is determined, including: based on multiple sets of mapping relationships, a first adjustment amount corresponding to the screen brightness and a second adjustment amount corresponding to the image feature are determined, the multiple sets of mapping relationships include correspondences between multiple screen brightnesses and multiple adjustment amounts, and correspondences between multiple image features and multiple adjustment amounts; based on the first adjustment amount and the second adjustment amount, a voltage difference for driving the screen to emit light is determined.

In combination with the first aspect, in some possible implementations, the reference factor includes an image feature, and the voltage difference is determined based on the screen brightness and the image feature using a pre-trained model.

The voltage difference that drives the screen to emit light is determined by combining the screen brightness and the image features of the image to be displayed. While meeting the screen's light-emitting requirements, the voltage difference can be reduced, thereby reducing the screen's power consumption, thereby extending the standby time of the electronic device and improving the user experience.

In combination with the first aspect, in some possible implementations, the reference factors include image features and influencing parameters, and based on the screen brightness and the reference factors, the voltage difference for driving the screen to emit light is determined, including: based on the screen brightness, the image features, the influencing parameters and a second mapping relationship, the voltage difference for driving the screen to emit light is determined; wherein the second mapping relationship includes a correspondence between multiple combinations of screen brightness, image features and influencing parameters and multiple voltage differences.

In combination with the first aspect, in some possible implementations, the reference factors include image features and influencing parameters, and based on the screen brightness and the reference factors, the voltage difference for driving the screen to emit light is determined, including: based on multiple sets of mapping relationships, determining a first adjustment amount corresponding to the screen brightness, a second adjustment amount corresponding to the image feature, and a third adjustment amount corresponding to the influencing parameter, the multiple sets of mapping relationships including a correspondence between multiple screen brightnesses and multiple adjustment amounts, a correspondence between multiple image features and multiple adjustment amounts, and a correspondence between multiple influencing parameters and multiple adjustment amounts; determining the voltage difference for driving the screen to emit light based on the first adjustment amount, the second adjustment amount, and the third adjustment amount.

In combination with the first aspect, in some possible implementations, the reference factors include image features and influencing parameters, and the voltage difference is determined based on the screen brightness, the image features, and the influencing parameters using a pre-trained model.

In addition to considering the screen brightness and the image characteristics of the image to be displayed, the voltage difference that drives the screen to emit light is determined in combination with the influencing parameters. While meeting the screen's light-emitting requirements, the voltage difference is further reduced, thereby further reducing the screen's power consumption, and further extending the standby time of the electronic device and improving the user experience.

In combination with the first aspect, in some possible implementations, the reference factor includes an influencing parameter, and based on the screen brightness and the reference factor, a voltage difference for driving the screen to emit light is determined, including: based on the screen brightness, the influencing parameter and a third mapping relationship, the voltage difference for driving the screen to emit light is determined; wherein the third mapping relationship includes a correspondence between multiple combinations of screen brightness and influencing parameters and multiple voltage differences.

In combination with the first aspect, in some possible implementations, the reference factor includes an influencing parameter, and based on the screen brightness and the reference factor, a voltage difference for driving the screen to emit light is determined, including: based on multiple sets of mapping relationships, a first adjustment amount corresponding to the screen brightness and a third adjustment amount corresponding to the influencing parameter are determined, and the multiple sets of mapping relationships include a correspondence between multiple screen brightnesses and multiple adjustment amounts, and a correspondence between multiple influencing parameters and multiple adjustment amounts; based on the first adjustment amount and the third adjustment amount, a voltage difference for driving the screen to emit light is determined.

In combination with the first aspect, in some possible implementations, the reference factor includes an influencing parameter, and the voltage difference is determined based on the screen brightness and the influencing parameter using a pre-trained model.

The voltage difference that drives the screen to emit light is determined by combining the screen brightness and influencing parameters. While meeting the screen's light-emitting requirements, the voltage difference can be reduced, thereby reducing the screen's power consumption, thereby extending the standby time of the electronic device and improving the user experience.

In combination with the first aspect, in some possible implementations, the reference factor includes image characteristics. Before determining the voltage difference for driving the screen to emit light based on the screen brightness and the reference factor, the method also includes: adjusting the grayscale of the image to be displayed when preset conditions are met; and updating the image characteristics based on the adjusted grayscale.

For the convenience of description, this implementation method is recorded as the image data and voltage difference joint modulation method.

In combination with the first aspect, in some possible implementations, the image to be displayed includes multiple pixel blocks, each pixel block includes at least one pixel point, and the multiple pixel blocks do not overlap with each other; the above-mentioned preset conditions include: the proportion of the number of target pixel blocks in the image to be displayed to the total number of pixel blocks is greater than zero and less than or equal to a preset proportion threshold, and the target pixel block is a pixel block whose maximum grayscale value exceeds a preset grayscale threshold.

When conditions are met, the image data (such as grayscale) of the image to be displayed can be changed, and the voltage difference and the image data of the image to be displayed can be linked. Without affecting the display effect, the power consumption can be further reduced, thereby further extending the standby time of the electronic device and improving the user experience.

In combination with the first aspect, in some possible implementations, after determining the voltage difference for driving the screen to emit light based on the screen brightness and reference factors, the method also includes: displaying a first image based on the voltage difference, the first image being an image after the grayscale of the image to be displayed is adjusted, the voltage difference being less than the first voltage difference, the first voltage difference being the voltage difference when the image to be displayed is displayed at the screen brightness.

That is to say, compared with the traditional method of determining the voltage difference based on the screen brightness (referred to as the traditional method for the sake of convenience of description), under the same screen brightness, when the same image to be displayed is received, the voltage difference determined by the image data and voltage difference joint modulation method in the method provided by the present application is smaller than the first voltage difference determined by the traditional method, and the image displayed by the traditional method is the received image to be displayed, while the image displayed by the image data and voltage difference joint modulation method in the method provided by the present application is the first image, and the first image is the image after the grayscale of the image to be displayed is adjusted, that is, the grayscale of the first image is different from that of the image to be displayed.

In combination with the first aspect, in some possible implementations, the voltage difference is determined at a frequency of N times the refresh rate of the screen, where N is an integer greater than or equal to 1 and less than or equal to M, M is the number of rows or columns of pixel units included in the screen in the refresh direction of the screen, and M is an integer greater than or equal to 2.

Optionally, N=1. In this implementation, the frequency of determining and adjusting the voltage difference is equal to the refresh rate of the screen, that is, when each frame of image data arrives, the screen brightness, image characteristics and other data can be obtained, and then the voltage difference can be determined based on these data, and the voltage difference for driving the screen to emit light can be updated based on the determined voltage difference. In other words, the voltage difference is updated once a frame of image data arrives.

Optionally, 2≤N≤M. In this implementation, the frequency of determining and adjusting the voltage difference is higher than the refresh rate of the screen.

It can be understood that, in this case, the image to be displayed can be obtained by combining the determined frequency of the voltage difference based on the images of two adjacent frames.

For example, N=2, the frequency of determining and adjusting the voltage difference is twice the refresh rate of the screen. That is to say, each time half a frame (half of a frame) of image data is refreshed, the screen brightness, image features and other data can be obtained, and then the voltage difference can be determined based on these data, and the voltage difference that drives the screen to emit light can be updated based on the determined voltage difference.

For another example, N=M, and the frequency of determining and adjusting the voltage difference is M times the refresh rate of the screen. That is to say, every time a row or a column of image data is refreshed, the screen brightness, image characteristics and other data can be obtained, and then the voltage difference can be determined based on these data, and the voltage difference that drives the screen to emit light can be updated based on the determined voltage difference.

In order to adjust the voltage difference to be closer to the voltage difference required by the screen, consider determining and adjusting the voltage difference based on the content to be displayed at a finer granularity than the frame. For example, the content of the images to be displayed in the two frames before and after can be considered at the same time. The voltage difference can also be adjusted during the transition period between the two frames of images. The margin between the voltage difference adjusted in this way and the voltage difference required by the screen is smaller, which can better match the voltage difference required by the screen and can minimize power consumption without affecting the display effect.

In a second aspect, the present application provides an electronic device, which can be used to implement the method in the first aspect and any possible implementation of the first aspect. The electronic device includes a corresponding module for executing the above method. The module included in the electronic device can be implemented by software and/or hardware.

In a third aspect, the present application provides an electronic device, comprising at least one processor and at least one memory, the at least one memory being used to store a computer program; the at least one processor being used to call the computer program to implement the method for screen display in the first aspect and any possible implementation of the first aspect.

Optionally, the processor is coupled to the memory.

The at least one processor may include, for example: a microprocessor and/or a display driver integrated circuit (IC).

In a fourth aspect, the present application provides a chip system comprising at least one processor for supporting the implementation of the functions involved in the above-mentioned first aspect and any possible implementation method of the first aspect, for example, processing the data involved in the above-mentioned method, etc.

In one possible design, the chip system also includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

The chip system may be composed of the chip, or may include the chip and other discrete devices.

In a fifth aspect, a computer-readable storage medium is provided, on which a computer program (also referred to as code or instruction) is stored. When the computer program is run by a computer, the method in the above-mentioned first aspect and any possible implementation of the first aspect is executed.

In a sixth aspect, a computer program product is provided, comprising: a computer program (also referred to as code, or instruction), wherein when the computer program is run, the method in the above-mentioned first aspect and any possible implementation manner of the first aspect is executed.

It should be understood that the second to sixth aspects of the present application correspond to the technical solutions of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a structure of an electronic device applicable to the method for screen display provided in an embodiment of the present application;

FIG2 is a circuit diagram of a screen applicable to the method for screen display provided in an embodiment of the present application;

FIG3 is a circuit diagram of a light emitting diode applicable to the method for screen display provided in an embodiment of the present application;

FIG4 is a schematic diagram of a volt-ampere characteristic curve of the driving element T1;

FIG5 is another schematic diagram of the structure of an electronic device applicable to the method for screen display provided in an embodiment of the present application;

FIG6 is a schematic flow chart of a method for screen display provided in an embodiment of the present application;

FIG7 is a schematic diagram showing a comparison of grayscales before and after adjustment provided by an embodiment of the present application;

FIG8 is a schematic diagram of a screen refresh provided by an embodiment of the present application;

FIG9 is a schematic diagram of two adjacent frames of images and screen display content during a refresh process provided by an embodiment of the present application;

10 is a schematic diagram comparing a voltage difference adjusted using a traditional method according to an embodiment of the present application and a voltage difference adjusted using the method provided in the present application;

FIG. 11 is another schematic diagram of the structure of an electronic device applicable to the method for screen display provided in an embodiment of the present application.

DETAILED DESCRIPTION

The technical solution in this application will be described below in conjunction with the accompanying drawings.

First, in the embodiments of the present application, words such as "first", "second", and "third" are used to distinguish between identical or similar items with substantially the same functions and effects. For example, the first mapping relationship, the second mapping relationship, and the third mapping relationship are intended to distinguish between different mapping relationships, and do not limit their order. Those skilled in the art will understand that words such as "first", "second", and "third" do not limit the quantity and execution order, and words such as "first", "second", and "third" do not necessarily limit them to be different.

Second, in the embodiments of the present application, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a device, system, product or equipment comprising a series of modules, modules or units is not necessarily limited to those modules, modules or units clearly listed, but may include other modules, modules or units that are not clearly listed or inherent to these devices, systems, products or equipment.

Third, in the embodiments of the present application, "and/or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and/or B may represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship, but does not exclude the situation where the associated objects before and after are in an "and" relationship. The specific meaning can be understood in conjunction with the context.

Fourth, in the embodiments of the present application, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

Fifth, in the embodiment of the present application, the mapping relationship (such as the first mapping relationship, the second mapping relationship, the third mapping relationship or multiple mapping relationships, etc.) can be configured or predefined. The mapping relationship can be implemented in the form of a table or other data structures, such as an array, a queue, a container, a stack, a linear list, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table or a hash table, etc., and the present application does not limit this.

Sixth, in the embodiments of the present application, preset can be understood as predefined, defined, predefined, stored, pre-stored, pre-negotiated, or pre-configured, etc.

For ease of understanding, the terms involved in this application are briefly explained below.

1. Pixel: Also known as pixel point, it refers to a small square in an image represented by a digital sequence (a small square is an image element). These small squares have a clear position and assigned color value. The color and position of the small square determine the appearance of the image.

2. Frame rate: refers to the frequency (rate) at which bitmap images in frames appear continuously on the display, that is, the number of frames that can be displayed per second.

3. Refresh rate: Also known as screen refresh rate, it refers to the number of times the screen can be refreshed per second. For screens using cathode ray tubes (CRTs), the image on the screen is composed of fluorescent dots that glow when struck by electron beams. Since the fluorescent powder in the tube glows for a very short time after being struck by the electron beam, the electron beam must continuously strike the fluorescent powder to keep it glowing. The electron gun starts from the first line in the upper left corner of the screen (the number of lines depends on the resolution of the display at the time, for example, at a resolution of 800×600, the electron gun will scan 600 lines), and scans line by line from left to right. After scanning the first line, it starts from the leftmost end of the second line to the rightmost end of the second line, and continues until the entire screen is scanned and starts from the upper left corner of the screen again. In this way, a refresh of the screen is completed.

4. Grayscale: It is to divide the brightness change between the brightest and the darkest into several parts, so as to facilitate the brightness control corresponding to the signal input. Each image is composed of many pixels. Usually each pixel can show many different colors. It is composed of three sub-pixels: red (red, R), green (green, G) and blue (blue, B). For each sub-pixel, the light source behind it can show different brightness levels, and the grayscale represents the different brightness levels from the darkest to the brightest. The grayscale of a pixel (or sub-pixel) can also be called the grayscale value of the pixel (or sub-pixel).

5. Screen brightness: The physical quantity of the intensity of light emitted by the surface of a luminous object is called brightness. Screen brightness is an important indicator for measuring the intensity of screen light. In the embodiment of the present application, screen brightness may refer to the brightness value of the screen under a full white screen (the RGB of each pixel is rgb (255, 255, 255), that is, the pixel value of each pixel is #FFFFFF). It is understandable that the user can adjust the screen brightness according to needs. The unit of screen brightness is nit.

6. APL: refers to the average relative brightness of each sub-pixel included in the image. Each image needs to light up at least one of the three sub-pixels of each pixel. For example, the APL of an all-red screen (the RGB of each pixel is rgb (255, 0, 0), that is, the pixel value of each pixel is #FF0000) or an all-green screen (the RGB of each pixel is rgb (0, 255, 0), that is, the pixel value of each pixel is #00FF00) or an all-blue screen (the RGB of each pixel is rgb (0, 0, 255), that is, the pixel value of each pixel is #0000FF) is about 33% For another example, the APL of a full cyan screen (the RGB of each pixel is rgb (255, 0, 255), that is, the pixel value of each pixel is #FF00FF), or a full magenta screen (the RGB of each pixel is rgb (0, 255, 255), that is, the pixel value of each pixel is #00FFFF), or a full yellow screen (the RGB of each pixel is rgb (255, 255, 0), that is, the pixel value of each pixel is #FFFF00) is about 67%; for another example, the APL of a full white screen is 100%. It can be understood that the value range of APL is 0 to 100%.

7. Peak brightness: The peak brightness involved in this application refers to the brightness corresponding to the area with the largest pixel value of the pixels included in the image, or it can also refer to the brightness of the sub-pixel with the largest grayscale value in the image. The unit of peak brightness is nit.

8. Image data: refers to the set of gray values (i.e. grayscale) of each pixel expressed as numerical values.

Before describing in detail the method for screen display provided in the embodiment of the present application, an electronic device applicable to the embodiment of the present application is exemplarily described in conjunction with FIG. 1 .

The method for screen display provided in the embodiments of the present application can be applied to electronic devices equipped with screens, such as mobile phones, tablet computers, smart watches, wearable devices, vehicle-mounted devices, laptop computers, personal computers (PCs), ultra-mobile personal computers (UMPCs), netbooks, personal digital assistants (PDAs), and distributed devices. The embodiments of the present application do not impose any restrictions on the specific types of electronic devices.

It is understandable that the screen involved in this application may also be called a display screen or a display, and this application does not impose any limitation on this.

FIG1 is a schematic diagram of the structure of an electronic device applicable to the method for screen display provided in an embodiment of the present application.

Exemplarily, Fig. 1 shows a schematic diagram of the structure of an electronic device 100. As shown in Fig. 1, the electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a screen 194, and a subscriber identification module (SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L and a bone conduction sensor 180M, etc.

The processor 110 may include one or more processing units, for example, the processor 110 may include one or more of an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a memory, a video codec, a digital signal processor (DSP), a baseband processor, and a neural-network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors.

The application processor outputs sound signals through the audio module 170 (such as the speaker 170A, etc.), or displays images or videos through the screen 194.

The processor may be the nerve center and command center of the electronic device 100. The processor may generate an operation control signal according to the instruction operation code and the timing signal to complete the control of fetching and executing instructions.

The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

The processor 110 can perform different operations to achieve different functions by executing instructions. The instructions can be, for example, instructions pre-stored in the memory before the device leaves the factory, or instructions read from the APP after the user installs a new application during use, and the embodiments of the present application do not impose any limitation on this.

In some embodiments, the processor 110 may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input/output (GPIO) interface, a SIM interface, and/or a USB interface, etc.

The USB interface 130 is an interface that complies with the USB standard specification, and specifically can be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 130 can be used to connect a charger to charge the electronic device 100, and can also be used to transmit data between the electronic device 100 and peripheral devices. It can also be used to connect headphones to play audio through the headphones. The interface can also be used to connect other electronic devices, such as augmented reality (AR) devices. It can be understood that the interface connection relationship between the modules illustrated in this application is only a schematic illustration and does not constitute a structural limitation on the electronic device 100. In other embodiments, the electronic device 100 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

The charging management module 140 is used to receive charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger through the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive wireless charging input through a wireless charging coil of the electronic device 100. While the charging management module 140 is charging the battery 142, it may also power the electronic device 100 through the power management module 141.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, the internal memory 121, the external memory, the screen 194, the camera 193, and the wireless communication module 160. The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle number, battery health status (leakage, impedance), etc. In some other embodiments, the power management module 141 can also be set in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 can also be set in the same device.

The electronic device 100 can realize the display function through a GPU, a screen 194, and an application processor. The GPU is a microprocessor for image processing, which connects the screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs, which execute program instructions to generate or change display information.

The screen 194, which may also be referred to as a display or a display screen, may be used to display images, videos, and the like. The screen 194 may include a display panel. The display panel may be a liquid crystal display (LCD), a light-emitting diode (LED), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a mini LED (Mini LED), a micro LED (Micro LED), a micro-OLED (Micro-OLED), a quantum dot light emitting diode (QLED), and the like. In some embodiments, the electronic device 100 may include one or more screens 194.

It should be understood that the screen 194 may also include more components, such as a backlight panel, a drive circuit, etc. The backlight panel may be used to provide a light source, and the display panel emits light based on the light source provided by the backlight panel. The drive circuit may be used to control whether the liquid crystal of the liquid crystal layer is light-transmissive or light-impermeable.

The electronic device 100 can realize the shooting function through the ISP, the camera 193, the video codec, the GPU, the screen 194 and the application processor.

The external memory interface 120 can be used to connect an external memory card, such as a secure digital memory (SD) card, to expand the storage capacity of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function, such as storing music, video and other files in the external memory card.

The internal memory 121 can be used to store computer executable program codes, which include instructions. The processor 110 executes various functional applications and data processing of the electronic device 100 by running the instructions stored in the internal memory 121. The internal memory 121 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area may store data created during the use of the electronic device 100 (such as audio data, a phone book, etc.), etc. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

It is to be understood that the structure illustrated in the present application does not constitute a specific limitation on the electronic device 100. In other embodiments, the electronic device 100 may include more or fewer components than shown in the figure, or combine some components, or separate some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

FIG. 2 is a circuit diagram of a screen applicable to the method for screen display provided in an embodiment of the present application.

Taking the OLED screen as an example, as shown in Figure 2, the screen may include X×Y pixel units, such as pixel unit P11, pixel unit P12, pixel unit P1Y, P21, pixel unit P22, pixel unit P2Y, pixel unit Pxy, PX1, pixel unit PX2, and pixel unit PXY shown in the figure, where 1≤x≤X, 1≤y≤Y, and X and Y are integers greater than or equal to 2.

Each pixel unit may include three sub-pixel units, each sub-pixel unit may include a light-emitting diode, for example, including but not limited to OLED, the anode of each sub-pixel unit may be connected to one end of a driving element, and the other end of the driving element may be connected to the emission layer positive electrode voltage (emission layer voltage drain drain, ELVDD); the cathode of each sub-pixel unit may be connected to the emission layer negative electrode voltage (emission layer voltage sourceseries, ELVSS). In a possible implementation, ELVSS may be the voltage provided by the cathode layer. There is a voltage difference between ELVDD and ELVSS, and the voltage difference may also be referred to as the cross-voltage between ELVDD and ELVSS (for ease of description, the cross-voltage between ELVDD and ELVSS will be referred to as the cross-voltage hereinafter). Among them, the driving element may include, for example, but is not limited to, a thin film transistor (thin film transistor, TFT) or a metal oxide semiconductor field effect transistor (metal oxide semiconductor field effect transistor, MOSFET).

The screen may further include scan lines connected to the pixel units of each row, such as scan lines S1, S2, and SX shown in the figure; the screen may further include light-emitting drive signal lines connected to the pixel units of each row, such as light-emitting drive signal lines E1, E2, and EX shown in the figure; the screen may further include data lines connected to the pixel units of each column, such as data lines D1, D2, and DY shown in the figure. The scan lines and light-emitting drive signal lines may extend in the direction of the rows of the array of pixel units, and the data lines may extend in the direction of the columns of the array of pixel units. The scan signal on each scan line may be provided by a scan drive circuit, the light-emitting drive signal on each light-emitting drive signal line may be provided by a light-emitting drive circuit, and the data signal on each data line may be provided by a data drive circuit.

In some embodiments, the scanning driving circuit, the light-emitting driving circuit and the data driving circuit may be integrated into one driving circuit, for example, may be integrated into a display driving IC, which is not limited in the present application. Furthermore, the present application does not limit the specific locations of the scanning driving circuit, the light-emitting driving circuit and the data driving circuit.

With the development of terminal technology, people have higher and higher requirements for screens used in electronic devices. For example, more and more electronic devices are equipped with full screens and other screens with high screen-to-body ratios. The power consumption and battery life of electronic devices are one of the important indicators that users pay attention to, and the power consumption of the screen accounts for a large proportion of the battery life power consumption. However, as the screen-to-body ratio increases, the power consumption required by the screen when working also increases. Therefore, how to reduce the power consumption of the screen of electronic devices has become an urgent problem to be solved.

The power consumption of the screen mainly includes light emitting power consumption and driving power consumption. Among them, when the brightness of the light emitting diode exceeds a certain value, the light emitting power consumption accounts for the main part of the power consumption of the screen.

FIG. 3 is a circuit diagram of a light emitting diode applicable to the method for screen display provided in an embodiment of the present application.

As mentioned above, each sub-pixel unit may include a light emitting diode. As shown in FIG3 , taking OLED as an example of a light emitting diode, the anode of the OLED is connected to one end of a driving element T1, the other end of the driving element T1 is connected to ELVDD, and the cathode of the OLED is connected to ELVSS. The voltage difference between ELVDD and ELVSS can control T1 to generate a current that drives the OLED to emit light, and the magnitude of the current affects the brightness of the OLED light. The magnitude of the current is related to the voltage or charge of the capacitor Cs. The greater the voltage of the capacitor Cs, the greater the current. During the screen refresh process, the capacitor Cs is charged through the data line D. The scanning signal on the scanning line S controls the conduction or disconnection of the driving element T2, which can control the charging of the capacitor Cs.

It is understandable that the driving element T1 or the driving element T2 may be a TFT or a MOSFET, which is not limited in the embodiment of the present application.

FIG. 4 is a schematic diagram of a volt-ampere characteristic curve of the driving element T1.

As shown in Fig. 4, after the voltage reaches the operating point, the current generated by the driving element T1 is stable. When the driving element T1 operates in the saturation region (i.e., the region to the right of the operating point), when the voltage can vary within a certain range, the current generated by the driving element T1 remains substantially unchanged, that is, the current flowing through the driving element T1 to the light emitting diode remains substantially unchanged, and the brightness of the light emitting diode remains substantially unchanged.

The power consumption of each LED is the product of the voltage across the LED and the current flowing through the LED, that is, the luminous power consumption = voltage across the LED × luminous current. The luminous power consumption of the screen is the product of the sum of the currents flowing through all the LEDs and the voltage across the LED. Therefore, as long as the voltage across the LED is reduced as much as possible while ensuring that the driving element T1 can work normally in the saturation region, the luminous power consumption of the LED can be reduced without affecting the brightness of the LED, thereby reducing the power consumption of the entire screen.

In order to reduce the power consumption of the screen, the embodiments of the present application provide a method and related devices for screen display, by determining the voltage difference for driving the screen to emit light according to the screen brightness and more reference factors, and minimizing the voltage difference while meeting the light-emitting requirements of the screen, so as to reduce the power consumption of the screen, thereby extending the standby time of the electronic device and improving the user experience.

FIG. 5 is another schematic diagram of the structure of an electronic device applicable to the method for screen display provided in an embodiment of the present application.

As shown in FIG. 5 , the electronic device may include a processor, a display driver IC, a display power supply, and a screen.

Taking a mobile phone as an example of an electronic device, the processor may be a system on chip (SOC).

The display driver IC may be a chip that drives the screen to display. As an example but not a limitation, the display driver IC may be connected to the processor via a high-speed interface such as a mobile industry processor interface (MIPI), which is not limited in this application.

The display power supply may be a power IC that supplies power to the screen, and the display power supply may be controlled by a processor or a display driver IC.

The screen may include but is not limited to an OLED screen, a Mini LED screen, or a Micro LED screen, etc., and this application does not limit this.

FIG. 6 is a schematic flowchart of a method for screen display provided in an embodiment of the present application.

As shown in Figure 6, method 600 may include step 610 and step 620. The steps of method 600 may be performed by an electronic device equipped with a screen (for ease of description, the electronic device equipped with a screen is referred to as an electronic device in this application), or the method 600 may be performed by a component (such as a processor, a chip or a chip system, etc.) configured in the electronic device, or may be implemented by a logic module or software capable of implementing all or part of the functions of the electronic device, which is not limited in this embodiment of the application.

The following is a detailed description of each step in FIG6 .

In step 610, screen brightness and reference factors are acquired, where the reference factors include influencing parameters and/or image features of the image to be displayed.

As mentioned above, the user can adjust the screen brightness according to needs, that is, the screen brightness is a variable parameter, and the electronic device can obtain the screen brightness in real time or periodically.

In some embodiments, the influencing parameters may include, but are not limited to, one or more of the following: frame rate, screen temperature, screen usage time, display mode, or characteristics of the screen.

For a detailed description of the frame rate, please refer to the relevant content in the terminology section above, which will not be repeated here for the sake of brevity.

The screen temperature is the temperature of the screen. As an example but not a limitation, in some embodiments, the electronic device may be equipped with a temperature sensor for measuring the temperature of the screen, and the electronic device may obtain the screen temperature based on the sensor. The lower the screen temperature, the higher the voltage difference required by the screen.

The screen usage time is the total time the screen has been used since it left the factory. The screen is powered on when it is in use, and the screen is powered off when it is not in use. The screen usage time can also be understood as the sum of the time periods when the screen is powered on. The longer the screen is used, the higher the voltage difference required by the screen.

The display mode includes but is not limited to a high brightness mode (HBM). The voltage difference required by the electronic device in the high brightness mode is higher than the voltage difference required in the non-high brightness mode. It can be understood that the non-high brightness mode is a mode other than the high brightness mode.

The characteristics of the screen, each screen is unique, just like there are no two identical leaves in the world, the performance parameters of different screens are not exactly the same when they leave the factory, and the voltage difference that can be reduced to the minimum without affecting the display effect of the image to be displayed is different. Therefore, when the screen leaves the factory, different values related to the voltage difference can be configured for different screens according to the characteristics of different screens. In some embodiments, the relevant value of the voltage difference can correspond to the screen identifier. It can be understood that the screen identifier is used to uniquely identify a screen. When the electronic device or a component in the electronic device obtains the screen identifier, it can also obtain the relevant value of the voltage difference corresponding to the screen, that is, it can obtain the characteristics of the screen.

When a certain image needs to be displayed on the screen (for the convenience of description, the image is hereinafter referred to as the image to be displayed), the electronic device or a component in the electronic device can obtain image features of the image to be displayed in advance.

In some embodiments, the image characteristic includes a maximum value of grayscale, APL, or peak brightness.

In the embodiment of the present application, the image feature may include but is not limited to any one of the maximum value of the grayscale, APL and peak brightness.

As mentioned above, the light source behind each sub-pixel can show different brightness levels, that is, the sub-pixel of each pixel of the image to be displayed can correspond to a grayscale (i.e., grayscale value), that is, the image to be displayed includes multiple grayscales, and the electronic device or the component in the electronic device can determine the maximum value of the grayscale from these multiple grayscales (for ease of description, the maximum value of the grayscale in the embodiment of the present application is recorded as the maximum grayscale). For a detailed description of the grayscale, please refer to the relevant description in the terminology section, and for the sake of brevity, it will not be repeated here.

As mentioned above, the value range of APL is 0 to 100%. The electronic device or a component in the electronic device can obtain the APL of the image to be displayed. The detailed description of APL can refer to the relevant description in the terminology part, and will not be repeated here for the sake of brevity.

As mentioned above, the peak brightness involved in this application refers to the brightness corresponding to the area with the largest pixel value included in the image, or it can also refer to the brightness of the sub-pixel with the largest grayscale value in the image. The electronic device or a component in the electronic device can obtain the peak brightness of the image to be displayed.

The electronic device or a component in the electronic device can obtain screen brightness and reference factors for subsequent analysis and processing.

In some embodiments, the reference factor may include image features of the image to be displayed, and the electronic device or a component in the electronic device may obtain screen brightness and image features of the image to be displayed. For ease of description, these embodiments are referred to as Embodiment A.

In some other embodiments, the reference factors may include influencing parameters and image features of the image to be displayed, and the electronic device or a component in the electronic device may obtain screen brightness, influencing parameters and image features of the image to be displayed. For ease of description, these embodiments are referred to as Embodiment B.

In other embodiments, the reference factor may include an influencing parameter, and the electronic device or a component in the electronic device may obtain the screen brightness and the influencing parameter. For ease of description, these embodiments are referred to as Embodiment C.

In step 620, based on the screen brightness and reference factors, a voltage difference for driving the screen to emit light is determined.

The step 620 is described in detail below in combination with the above-mentioned embodiment A, embodiment B and embodiment C.

In embodiment A, after obtaining the screen brightness and the image features of the image to be displayed, the electronic device or a component in the electronic device can determine the voltage difference for driving the screen to emit light based on the screen brightness and the image features. For a detailed description of the image features, please refer to the relevant content above, and for the sake of brevity, it will not be repeated here.

In practical applications, the voltage difference for driving the screen to emit light is determined based on the screen brightness and the image features, including but not limited to using a mapping relationship (such as a look up table (LUT)) or machine learning.

Optionally, the reference factor includes the image feature, and based on the screen brightness and the reference factor, the voltage difference for driving the screen to emit light is determined, including: based on the screen brightness, the image feature and a first mapping relationship, the voltage difference for driving the screen to emit light is determined; wherein the first mapping relationship includes a correspondence between multiple combinations of screen brightness and image features and multiple voltage differences.

In some embodiments, the image feature may include a maximum value of a grayscale. In this implementation, the first mapping relationship includes a correspondence between multiple combinations of screen brightness and grayscale maximum values and multiple voltage differences. After obtaining the maximum values of screen brightness and grayscale, the electronic device or a component in the electronic device may determine a voltage difference for driving the screen to emit light based on the screen brightness, the maximum value of the grayscale, and the first mapping relationship.

As an example but not a limitation, Table 1 is taken as an example of the first mapping relationship. For ease of description, DB is used to represent screen brightness, GM is used to represent the maximum value of grayscale, and VD is used to represent voltage difference in Table 1. It can be understood that the numerical range in Table 1 is only an example and should not limit the present application in any way.

Table 1

(DB; GM) VD ([0, 200]; [0, 50]) 6.0 ((200, 400]; [0, 50]) 6.1 ...... ...... ((800, 1000]; [0, 50]) 7.0 ...... ...... ([0, 200]; (50, 100]) 6.2 ...... ......

For example, when the screen brightness obtained by an electronic device or a component in the electronic device is 200 nit and the maximum value of the grayscale is 100, it falls into the combination of ([0, 200]; (50, 100]) in Table 1. The voltage difference corresponding to this combination is 6.2 volts (volt, V), so it can be determined that the voltage difference for driving the screen to emit light is 6.2 V.

It is understandable that in practical applications, the combination of the maximum value of the screen brightness and the grayscale is not limited to a value range, and can also be specific to a combination of values, for example, (200; 100), which means that the screen brightness is 200 nit and the maximum value of the grayscale is 100. This application is not limited to this.

In some other embodiments, the image feature may include APL. In this implementation, the first mapping relationship includes a correspondence between multiple combinations of screen brightness and APL and multiple voltage differences. After obtaining the screen brightness and APL, the electronic device or a component in the electronic device may determine the voltage difference for driving the screen to emit light based on the screen brightness, APL and the first mapping relationship.

In some other embodiments, the image feature may include peak brightness. In this implementation, the first mapping relationship includes a correspondence between multiple combinations of screen brightness and peak brightness and multiple voltage differences. After obtaining the screen brightness and peak brightness, the electronic device or a component in the electronic device may determine the voltage difference for driving the screen to emit light based on the screen brightness, peak brightness and the first mapping relationship.

It can be understood that when the image feature includes APL or peak brightness, similar to the case where the image feature includes the maximum value of the grayscale, a detailed description can be found in the case where the image feature includes the maximum value of the grayscale. For the sake of brevity, it will not be repeated here.

For the convenience of description, the above-mentioned method of determining the voltage difference is recorded as a joint decision-making method.

Optionally, the reference factor includes the image feature, and based on the screen brightness and the reference factor, a voltage difference for driving the screen to emit light is determined, including: based on multiple sets of mapping relationships, a first adjustment amount corresponding to the screen brightness and a second adjustment amount corresponding to the image feature are determined, the multiple sets of mapping relationships including correspondence between multiple screen brightnesses and multiple adjustment amounts, and correspondence between multiple image features and multiple adjustment amounts; based on the first adjustment amount and the second adjustment amount, a voltage difference for driving the screen to emit light is determined.

In some embodiments, the image feature may include a maximum value of a grayscale. In this implementation, the multiple sets of mapping relationships include a correspondence between multiple screen brightnesses and multiple adjustment amounts, and a correspondence between multiple maximum values of grayscales and multiple adjustment amounts. After obtaining the screen brightness and the maximum value of the grayscale, the electronic device or a component in the electronic device may determine a voltage difference for driving the screen to emit light based on the screen brightness, the maximum value of the grayscale, and the multiple sets of mapping relationships.

As an example but not limitation, Table 2 and Table 3 are used as an example of multiple groups of mapping relationships, where Table 2 represents the correspondence between multiple screen brightnesses and multiple adjustment amounts, and Table 3 represents the correspondence between multiple grayscale maximum values and multiple adjustment amounts.

Table 2

Screen brightness Adjustment amount [0, 200] +6.0 (200, 400] +6.1 ...... ...... (800, 1000] +6.5 ...... ......

Table 3

Maximum value of grayscale Adjustment amount [0, 50] 0 (50, 100] +0.2 ...... ...... (200, 255] +0.8

For example, when the screen brightness obtained by the electronic device or a component in the electronic device is 200 nit and the maximum value of the grayscale is 100, based on Table 2, it can be determined that the corresponding adjustment amount when the screen brightness is 200 nit is +6.0 V, and based on Table 3, it can be determined that the corresponding adjustment amount when the maximum value of the grayscale is 100 is +0.2 V.

It can be understood that in this implementation, the adjustment amount determined based on the screen brightness and Table 2 is the first adjustment amount. When the screen brightness is 200nit, the first adjustment amount = +6.0V. The adjustment amount determined based on the maximum value of the grayscale and Table 3 is the second adjustment amount. When the maximum value of the grayscale is 100, the second adjustment amount = +0.2V. In a possible implementation, the determined first adjustment amount and the second adjustment amount are summed to obtain the voltage difference for driving the screen to emit light, that is, the voltage difference = the first adjustment amount + the second adjustment amount = +6.0V + 0.2V = 6.2V.

In other embodiments, the image feature may include an APL. In this implementation, the multiple sets of mapping relationships include a plurality of correspondences between screen brightnesses and a plurality of adjustment amounts, and a plurality of correspondences between APLs and a plurality of adjustment amounts. After acquiring the screen brightness and the APL, the electronic device or a component in the electronic device may determine a voltage difference for driving the screen to emit light based on the screen brightness, the APL, and the multiple sets of mapping relationships.

As an example but not a limitation, Table 2 and Table 4 are taken as an example of multiple groups of mapping relationships, wherein Table 4 represents the corresponding relationship between multiple APLs and multiple adjustment amounts.

Table 4

APL Adjustment amount [0, 20%] -0.1 (20%, 40%] 0 ...... ...... (80%, 100%] +0.3

For example, when the screen brightness obtained by the electronic device or a component in the electronic device is 200 nit and the APL is 20%, based on Table 2, it can be determined that the corresponding adjustment amount when the screen brightness is 200 nit is +6.0 V, and based on Table 4, it can be determined that the corresponding adjustment amount when the APL is 20% is -0.1 V.

It can be understood that in this implementation, the adjustment amount determined based on the screen brightness and Table 2 is the first adjustment amount. When the screen brightness is 200nit, the first adjustment amount = +6.0V; the adjustment amount determined based on the APL and Table 4 is the second adjustment amount. When the APL is 20%, the second adjustment amount = -0.1V. In a possible implementation, the voltage difference for driving the screen to emit light is obtained by summing the determined first adjustment amount and the second adjustment amount, that is, the voltage difference = the first adjustment amount + the second adjustment amount = +6.0V + (-0.1V) = 6.2V.

In some other embodiments, the image feature includes peak brightness. In this implementation, the multiple sets of mapping relationships include a plurality of correspondences between screen brightnesses and a plurality of adjustment amounts, and a plurality of correspondences between peak brightnesses and a plurality of adjustment amounts. After obtaining the screen brightness and the peak brightness, the electronic device or a component in the electronic device can determine a voltage difference for driving the screen to emit light based on the screen brightness, the peak brightness and the multiple sets of mapping relationships.

As an example but not a limitation, Table 2 and Table 5 are taken as an example of multiple groups of mapping relationships, wherein Table 5 represents the corresponding relationship between multiple peak brightnesses and multiple adjustment amounts.

Table 5

For example, when the screen brightness obtained by the electronic device or a component in the electronic device is 200 nit and the peak brightness is 200 nit, based on Table 2, it can be determined that the corresponding adjustment amount when the screen brightness is 200 nit is +6.0 V, and based on Table 5, it can be determined that the corresponding adjustment amount when the peak brightness is 200 nit is +0.1 V.

It can be understood that in this implementation, the adjustment amount determined based on the screen brightness and Table 2 is the first adjustment amount. When the screen brightness is 200nit, the first adjustment amount = +6.0V, and the adjustment amount determined based on the peak brightness and Table 5 is the second adjustment amount. When the peak brightness is 200nit, the second adjustment amount = +0.1V. In a possible implementation, the determined first adjustment amount and the second adjustment amount are summed to obtain the voltage difference for driving the screen to emit light, that is, the voltage difference = the first adjustment amount + the second adjustment amount = +6.0V + 0.1V = 6.1V.

It can be seen from Tables 2 to 5 that the adjustment amount can be a positive number (for example, +0.1) or a negative number (for example, -0.1), or zero. A positive number indicates an increase in the voltage difference, a negative number indicates a decrease in the voltage difference, and zero indicates neither an increase nor a decrease. This application does not limit this.

It is understandable that in actual applications, the screen brightness in Table 2, the maximum grayscale value in Table 3, the APL in Table 4 or the peak brightness in Table 5 are not limited to the form of value ranges, but can also be specified as numerical values, and this application does not limit this.

For the convenience of description, the above-mentioned method of determining the voltage difference is recorded as a cascade decision method.

It can be understood that the difference between the cascade decision-making method and the joint decision-making method is that in the joint decision-making method, a first mapping relationship (such as the table shown in Table 1) can be pre-stored in the electronic device, and the electronic device or a component in the electronic device can directly determine the voltage difference that drives the screen to emit light from the first mapping relationship; in the cascade decision-making method, multiple sets of mapping relationships (such as the multiple sets of mapping relationships described in Tables 2 and 3, or, the multiple sets of mapping relationships described in Tables 2 and 4, or, for example, the multiple sets of mapping relationships described in Tables 2 and 5) can be pre-stored in the electronic device, and the electronic device or the component in the electronic device needs to determine multiple adjustment amounts from these multiple sets of mapping relationships respectively, and then calculate these multiple adjustment amounts (for example, including but not limited to summation calculation) to obtain the final voltage difference that drives the screen to emit light.

Optionally, the reference factor includes the image feature, and the voltage difference is determined based on the screen brightness and the image feature using a pre-trained model.

A machine learning method can be used to train a model using a data set including screen brightness and image features, and the trained model can be deployed in an electronic device or a component of an electronic device, so that the electronic device or the component in the electronic device can use the model to determine the voltage difference for driving the screen to emit light based on the acquired screen brightness and image features. It can be understood that the screen brightness and the image features are the input data of the model, and the voltage difference is the output data of the model.

The model can be trained based on a machine learning algorithm. As an example and not limitation, the machine learning algorithm for training the model can include but is not limited to a K-nearest neighbor (KNN) algorithm, a K-means clustering algorithm, or a support vector machine (SVM) algorithm.

In this way, by determining the voltage difference that drives the screen to emit light based on the screen brightness and the image characteristics of the image to be displayed, the voltage difference can be reduced as much as possible while meeting the screen's lighting requirements, thereby reducing the screen's power consumption, and further extending the standby time of the electronic device and improving the user experience.

In embodiment B, after obtaining the screen brightness, the influencing parameters and the image features of the image to be displayed, the electronic device or the components in the electronic device can determine the voltage difference for driving the screen to emit light based on the screen brightness, the influencing parameters and the image features. For a detailed description of the influencing parameters and the image features, please refer to the relevant content above, and for the sake of brevity, it will not be repeated here.

In practical applications, including but not limited to using mapping relationships or machine learning, the voltage difference that drives the screen to emit light is determined based on screen brightness, image features and influencing parameters.

Optionally, the reference factor includes the image feature and the influencing parameter, and based on the screen brightness and the reference factor, the voltage difference for driving the screen to emit light is determined, including: based on the screen brightness, the image feature, the influencing parameter and a second mapping relationship, the voltage difference for driving the screen to emit light is determined; wherein the second mapping relationship includes a correspondence between multiple combinations of screen brightness, image features and influencing parameters and multiple voltage differences.

As mentioned above, the image feature may include any one of the maximum value of grayscale, APL and peak brightness; the influencing parameter may include one or more of the frame rate, screen temperature, screen usage time, display mode and screen characteristics. As an example and not a limitation, for example, the image feature includes the maximum value of grayscale, and the influencing parameter includes the frame rate, screen temperature, screen usage time, display mode and screen characteristics. In this implementation, the second mapping relationship includes the correspondence between the screen brightness, the maximum value of grayscale, the frame rate, the screen temperature, the screen usage time, the display mode and the characteristics of the screen and multiple combinations of voltage differences. In this implementation, after the electronic device or the component in the electronic device obtains the screen brightness, the maximum value of grayscale, the frame rate, the screen temperature, the screen usage time, the display mode and the characteristics of the screen, it can determine the voltage difference for driving the screen to emit light based on the screen brightness, the maximum value of the grayscale, the frame rate, the screen temperature, the screen usage time, the display mode, the characteristics of the screen and the second mapping relationship.

It is understandable that the second mapping relationship is similar to the first mapping relationship described above, and the table can also serve as an example of the second mapping relationship. Unlike the first mapping relationship, the multiple combinations corresponding to the multiple voltage differences may include at least one parameter of the parameters such as frame rate, screen temperature, screen usage time, display mode and screen characteristics in addition to the maximum value of screen brightness and grayscale (or APL or peak brightness). For other detailed descriptions of the second mapping relationship, please refer to the relevant description of the first mapping relationship above. For the sake of brevity, it will not be repeated here.

It can be understood that this implementation method is also the joint decision-making method mentioned above.

Optionally, the reference factor includes the image feature and the influencing parameter, and based on the screen brightness and the reference factor, a voltage difference for driving the screen to emit light is determined, including: based on multiple sets of mapping relationships, a first adjustment amount corresponding to the screen brightness, a second adjustment amount corresponding to the image feature, and a third adjustment amount corresponding to the influencing parameter are determined, the multiple sets of mapping relationships including correspondences between multiple screen brightnesses and multiple adjustment amounts, correspondences between multiple image features and multiple adjustment amounts, and correspondences between multiple influencing parameters and multiple adjustment amounts; based on the first adjustment amount, the second adjustment amount, and the third adjustment amount, the voltage difference for driving the screen to emit light is determined.

As mentioned above, the image features may include any one of the maximum value of grayscale, APL and peak brightness; the influencing parameters may include one or more of the frame rate, screen temperature, screen usage time, display mode and screen characteristics. As an example and not a limitation, for example, the image features include the maximum value of grayscale, and the influencing parameters include frame rate, screen temperature, screen usage time, display mode and screen characteristics. In this implementation, the multiple groups of mapping relationships include the correspondence between multiple screen brightnesses and multiple adjustment amounts, the correspondence between multiple maximum values of grayscale and multiple adjustment amounts, the correspondence between multiple frame rates and multiple adjustment amounts, the correspondence between multiple screen temperatures and multiple adjustment amounts, the correspondence between multiple screen usage time and multiple adjustment amounts, the correspondence between multiple display modes and multiple adjustment amounts, and the correspondence between multiple screen characteristics and multiple adjustment amounts. After obtaining the screen brightness, the maximum value of the gray scale, the frame rate, the screen temperature, the screen usage time, the display mode and the characteristics of the screen, the electronic device or a component in the electronic device can determine the voltage difference for driving the screen to emit light based on the screen brightness, the maximum value of the gray scale, the frame rate, the screen temperature, the screen usage time, the display mode, the characteristics of the screen and these multiple sets of mapping relationships.

In this implementation, for example, in addition to Table 2 and Table 3 mentioned above, these multiple sets of mapping relationships may also include a table of correspondence between multiple frame rates and multiple adjustment amounts, a table of correspondence between multiple screen temperatures and multiple adjustment amounts, a table of correspondence between multiple screen usage time and multiple adjustment amounts, a table of correspondence between multiple display modes and multiple adjustment amounts, and a table of correspondence between multiple screen characteristics and multiple adjustment amounts. The electronic device or components in the electronic device can determine the adjustment amount from these multiple tables respectively, and then calculate these multiple adjustment amounts (for example, including but not limited to summation calculation) to obtain the voltage difference that ultimately drives the screen to emit light.

It can be understood that in this implementation, the adjustment amount determined based on the screen brightness and Table 2 is the first adjustment amount; the adjustment amount determined based on the maximum value of the grayscale and Table 3 is the second adjustment amount; the third adjustment amount is obtained by summing up the multiple adjustment amounts determined based on the frame rate, the screen temperature, the screen usage time, the display mode and the characteristics of the screen, and the tables related to these influencing parameters. In a possible implementation, the determined first adjustment amount, second adjustment amount and third adjustment amount are summed to obtain the voltage difference that drives the screen to emit light, that is, voltage difference = first adjustment amount + second adjustment amount + third adjustment amount.

It can be understood that this implementation method is also the cascade decision-making method described above.

Optionally, the reference factors include the image features and the influencing parameters, and the voltage difference is determined based on screen brightness, image features and influencing parameters using a pre-trained model.

A machine learning method can be used to train a model using a data set including screen brightness, image features, and influencing parameters, and the trained model can be deployed in an electronic device or a component of an electronic device, so that the electronic device or the component in the electronic device can use the model to determine the voltage difference for driving the screen to emit light based on the acquired screen brightness, image features, and influencing parameters. It can be understood that the screen brightness, image features, and influencing parameters are the input data of the model, and the voltage difference is the output data of the model.

The model may be trained based on a machine learning algorithm. As an example and not limitation, the machine learning algorithm for training the model may include but is not limited to KNN, K-means clustering algorithm or SVM algorithm.

In addition to considering the screen brightness and the image characteristics of the image to be displayed, the voltage difference that drives the screen to emit light is determined in combination with the influencing parameters. While meeting the screen's light-emitting requirements, the voltage difference is further reduced, thereby further reducing the screen's power consumption, and further extending the standby time of the electronic device and improving the user experience.

In embodiment C, after obtaining the screen brightness and the influencing parameters, the electronic device or a component in the electronic device can determine the voltage difference for driving the screen to emit light based on the screen brightness and the influencing parameters. For a detailed description of the influencing parameters, please refer to the relevant content above, and for the sake of brevity, it will not be repeated here.

In practical applications, including but not limited to using mapping relationships or machine learning, the voltage difference that drives the screen to emit light is determined based on the screen brightness and influencing parameters.

Optionally, the reference factor includes the influencing parameter, and based on the screen brightness and the reference factor, the voltage difference for driving the screen to emit light is determined, including: based on the screen brightness, the influencing parameter and a third mapping relationship, the voltage difference for driving the screen to emit light is determined; wherein the third mapping relationship includes a correspondence between multiple combinations of screen brightness and influencing parameters and multiple voltage differences.

As mentioned above, the influencing parameters include one or more of the frame rate, screen temperature, screen usage time, display mode and screen characteristics. As an example and not a limitation, for example, the influencing parameters include frame rate, screen temperature, screen usage time, display mode and screen characteristics. In this implementation, the third mapping relationship includes a correspondence between multiple combinations of screen brightness, frame rate, screen temperature, screen usage time, display mode and screen characteristics and multiple voltage differences. After obtaining the screen brightness, frame rate, screen temperature, screen usage time, display mode and screen characteristics, the electronic device or a component in the electronic device can determine the voltage difference for driving the screen to emit light based on the screen brightness, the frame rate, the screen temperature, the screen usage time, the display mode, the characteristics of the screen and the third mapping relationship.

It can be understood that the third mapping relationship is similar to the first mapping relationship and the second mapping relationship described above, and the table can also serve as an example of the third mapping relationship. Unlike the first mapping relationship, the multiple combinations corresponding to the multiple voltage differences include screen brightness, but do not include image features. In addition, it also includes one or more of the parameters such as frame rate, screen temperature, screen usage time, display mode and screen characteristics. For other detailed descriptions of the third mapping relationship, please refer to the relevant descriptions of the first mapping relationship or the second mapping relationship above. For the sake of brevity, it will not be repeated here.

It can be understood that this implementation method is also the joint decision-making method mentioned above.

Optionally, the reference factor includes the influencing parameter, and based on the screen brightness and the reference factor, the voltage difference for driving the screen to emit light is determined, including: based on multiple sets of mapping relationships, determining a first adjustment amount corresponding to the screen brightness, and a third adjustment amount corresponding to the influencing parameter, the multiple sets of mapping relationships including correspondences between multiple screen brightnesses and multiple adjustment amounts, and correspondences between multiple influencing parameters and multiple adjustment amounts; determining the voltage difference for driving the screen to emit light based on the first adjustment amount and the third adjustment amount.

In some embodiments, as an example but not limitation, for example, the influencing parameters include frame rate, screen temperature, screen usage time, display mode and screen characteristics. In this implementation, multiple groups of mapping relationships include correspondences between multiple screen brightnesses and multiple adjustment amounts, correspondences between multiple frame rates and multiple adjustment amounts, correspondences between multiple screen temperatures and multiple adjustment amounts, correspondences between multiple screen usage times and multiple adjustment amounts, correspondences between multiple display modes and multiple adjustment amounts, and correspondences between multiple screen characteristics and multiple adjustment amounts. After obtaining the screen brightness, frame rate, screen temperature, screen usage time, display mode and screen characteristics, the electronic device or a component in the electronic device can determine the voltage difference for driving the screen to emit light based on the screen brightness, the frame rate, the screen temperature, the screen usage time, the display mode, the screen characteristics and the multiple groups of mapping relationships.

In this implementation, for example, in addition to the above-mentioned Table 2, these multiple groups of mapping relationships may also include a table of correspondence between multiple frame rates and multiple adjustment amounts, a table of correspondence between multiple screen temperatures and multiple adjustment amounts, a table of correspondence between multiple screen usage time and multiple adjustment amounts, a table of correspondence between multiple display modes and multiple adjustment amounts, and a table of correspondence between multiple screen characteristics and multiple adjustment amounts. The electronic device or components in the electronic device can determine the adjustment amount from these multiple tables respectively, and then calculate these multiple adjustment amounts (for example, including but not limited to summation calculation) to obtain the voltage difference that ultimately drives the screen to emit light.

It can be understood that in this implementation, the adjustment amount determined based on the screen brightness and Table 2 is the first adjustment amount; the third adjustment amount is obtained by summing the multiple adjustment amounts determined based on the frame rate, the screen temperature, the screen usage time, the display mode and the screen characteristics, etc., and the tables related to these influencing parameters. In a possible implementation, the determined first adjustment amount and the third adjustment amount are summed to obtain the voltage difference that drives the screen to emit light, that is, the voltage difference = the first adjustment amount + the third adjustment amount, which is not limited in this application.

It can be understood that this implementation method is also the cascade decision-making method described above.

Optionally, the reference factor includes an influencing parameter, and the voltage difference is determined based on the screen brightness and the influencing parameter using a pre-trained model.

A machine learning method can be used to train a model using a data set including screen brightness and influencing parameters, and the trained model can be deployed in an electronic device or a component of an electronic device, so that the electronic device or the component in the electronic device can use the model to determine the voltage difference for driving the screen to emit light based on the acquired screen brightness and the influencing parameter. It can be understood that the screen brightness and the influencing parameter are the input data of the model, and the voltage difference is the output data of the model.

The model may be trained based on a machine learning algorithm. As an example and not limitation, the machine learning algorithm for training the model may include but is not limited to KNN, K-means clustering algorithm or SVM algorithm.

In addition to considering the screen brightness, the influencing parameters are also combined to determine the voltage difference that drives the screen to emit light. While meeting the screen's lighting requirements, the voltage difference is reduced, thereby reducing the screen's power consumption, thereby extending the standby time of the electronic device and improving the user experience.

In some scenarios, for example, including but not limited to camera preview scenarios or video playback scenarios, the image to be displayed is usually rarely a completely white screen, but there may be a small amount of white graphics and/or white text in the user interface (UI), which can also be understood as the presence of a small number of white pixels in the image to be displayed. In this case, if the image features are used as a reference factor to determine the screen's demand for voltage difference, then these small number of white pixels will limit the extent of the voltage difference reduction.

In order to solve the above problem, in some embodiments, the reference factor includes image characteristics. Before determining the voltage difference for driving the screen to emit light based on the screen brightness and the reference factor, the method 600 also includes: adjusting the grayscale of the image to be displayed when preset conditions are met; and updating the image characteristics based on the adjusted grayscale.

Before determining the voltage difference for driving the screen to emit light based on the screen brightness and reference factors, the electronic device or the component in the electronic device can also determine whether the preset conditions are met. If the preset conditions are met, the grayscale of the image to be displayed is adjusted, and the image features are updated based on the adjusted grayscale, and then the voltage difference for driving the screen to emit light is determined based on the screen brightness and the updated image features; if the preset conditions are not met, there is no need to adjust the grayscale of the image to be displayed, and the voltage difference for driving the screen to emit light can be directly determined based on the acquired screen brightness and image features. For ease of description, this implementation method is recorded as the image data and voltage difference joint modulation method in this application.

In some embodiments, the image to be displayed includes multiple pixel blocks, each pixel block includes at least one pixel point, and the multiple pixel blocks do not overlap with each other; the preset conditions include: the ratio of the number of target pixel blocks in the image to be displayed to the total number of pixel blocks exceeds a preset ratio threshold, and the target pixel block is a pixel block whose maximum grayscale value is greater than zero and less than or equal to a preset grayscale threshold.

The image to be displayed may be divided into a plurality of pixel blocks, each pixel block includes at least one pixel point (i.e., pixel), and the plurality of pixel blocks do not overlap. In this case, the preset conditions may include but are not limited to: in the image to be displayed, the number of pixel blocks whose maximum grayscale value exceeds the preset grayscale threshold value accounts for a proportion of the total number of pixel blocks greater than zero and less than or equal to a preset proportion threshold. For ease of description, the present application records the pixel block whose maximum grayscale value exceeds the preset grayscale threshold value as the target pixel block.

That is to say, a grayscale threshold can be preset, as an example but not limited, for example, the grayscale threshold is 200. A ratio threshold can also be preset, as an example but not limited, for example, the ratio threshold is 10%. The electronic device or a component in the electronic device can first determine the number of target pixel blocks, that is, determine the maximum value of the grayscale in each pixel block, and determine whether the maximum value of the grayscale is greater than the preset grayscale threshold, and count the number of pixel blocks whose maximum value of the grayscale exceeds the preset grayscale threshold. Then, the electronic device or a component in the electronic device can calculate the proportion of the number of target pixel blocks to the total number of pixel blocks, and determine whether the proportion is greater than zero and less than or equal to the preset ratio threshold. In the case that the proportion is greater than zero and less than or equal to the preset ratio threshold, the grayscale of the image to be displayed is adjusted, and the image features are updated based on the adjusted grayscale, and then the voltage difference for driving the screen to emit light is determined based on the screen brightness and the updated image features.

As an example but not a limitation, an automatic current limit algorithm (ACL) may be used to perform grayscale mapping on the grayscale of the image to be displayed, thereby changing the grayscale of the image to be displayed.

FIG. 7 is a schematic diagram showing a comparison of grayscales before and after adjustment provided in an embodiment of the present application.

As shown in FIG7 , combining the grayscale lines before adjustment and the grayscale lines after adjustment, it can be seen that when the input grayscale is less than or equal to a, the output grayscale is the same as the input grayscale, and when the input grayscale is greater than a, the output grayscale is less than the input grayscale. The maximum value of the grayscale before adjustment is b, and the maximum value of the grayscale after adjustment is c, c<b. Wherein, a, b, c∈[0, 255].

In one implementation, a may be a preset grayscale threshold, which is not limited in this application.

In the image data and voltage difference joint modulation mode, when conditions are met, the image data (e.g., grayscale) of the image to be displayed is changed, and the voltage difference for driving the screen to emit light is determined based on the screen brightness and the updated image characteristics, or the voltage difference for driving the screen to emit light is determined based on the screen brightness, the influencing parameters, and the updated image characteristics. The voltage difference can be linked with the image data of the image to be displayed, and the power consumption can be reduced as much as possible without affecting the display effect.

In some embodiments, after determining the voltage difference for driving the screen to emit light based on the screen brightness and reference factors, the method 600 also includes: displaying a first image based on the voltage difference, the first image being an image after the image to be displayed is adjusted to a grayscale, the voltage difference being less than the first voltage difference, the first voltage difference being the voltage difference when the image to be displayed is displayed at the screen brightness.

That is to say, compared with the traditional method of determining the voltage difference based on the screen brightness (referred to as the traditional method for the sake of convenience of description) and the above-mentioned embodiments A, B and C provided in the present application, under the same screen brightness, when the same image to be displayed is received, the voltage difference determined by the image data and voltage difference joint modulation method in the method provided in the present application is smaller than the first voltage difference determined by using the traditional method and the above-mentioned embodiments A, B and C provided in the present application, and the image displayed by using the traditional method and the above-mentioned embodiments A, B and C provided in the present application is the received image to be displayed, while the first image is displayed by using the image data and voltage difference joint modulation method in the method provided in the present application, and the first image is the image after the grayscale of the image to be displayed is adjusted, that is, the grayscale of the first image is different from that of the image to be displayed.

As an example but not a limitation, as shown in Table 6, at a screen brightness of 400 nit, the same image to be displayed, such as image G, is received using the traditional method and the image data and voltage difference modulation method in the method provided in the present application. Using the traditional method, after receiving image G, the electronic device drives the screen based on a voltage of 6.6V to display image G; using the image data and voltage difference modulation method in the method provided in the present application, after receiving image G, the electronic device can drive the screen based on a voltage of 6.3V to display image G′, which is the image G after the grayscale is adjusted, that is, the grayscale of image G′ is different from that of image G. 6.3V＜6.6V, that is, the voltage difference determined by the image data and voltage difference modulation method in the method provided in the present application is smaller than the first voltage difference determined by the traditional method.

Table 6

In some embodiments, the voltage difference is determined at a frequency of N times the refresh rate of the screen, where N is an integer greater than or equal to 1 and less than or equal to M, M is the number of rows or columns of pixel units included in the screen in the refresh direction of the screen, and M is an integer greater than or equal to 2.

FIG. 8 is a schematic diagram of screen refresh provided in an embodiment of the present application.

Each frame of the image is not refreshed to the screen instantly, but usually refreshed row by row or column by column.

As shown in a) of FIG8 , in combination with the scanning drive circuit in FIG2 , etc., the image data is refreshed row by row from the top to the bottom of the screen, that is, the refresh direction of the screen can be from top to bottom, for example, row 1, row 2, row 3, ..., row M-2, row M-1 and row M are refreshed in sequence, and this process completes the refresh of one frame of image data. Alternatively, as shown in b) of FIG8 , the image data can also be refreshed column by column from the left side to the right side of the screen, that is, the refresh direction of the screen can be from left to right, for example, column 1, column 2, ..., column M-1 and column M are refreshed in sequence, and this process also completes the refresh of one frame of image data. As an example and not a limitation, for a screen with a refresh rate of 60 hertz (Hz), it takes about 16.67 (obtained from 1000/60) milliseconds (ms) to refresh all rows of a new frame.

It can be understood that, in a) of FIG. 8 , M represents the number of rows, which may correspond to X in FIG. 2 ; and in b) of FIG. 8 , M represents the number of columns, which may correspond to Y in FIG. 2 .

Optionally, N=1. In this implementation, the frequency of determining and adjusting the voltage difference is equal to the refresh rate of the screen, that is, when each frame of image data arrives, the screen brightness, image characteristics and other data can be obtained, and then the voltage difference can be determined based on these data, and the voltage difference for driving the screen to emit light can be updated based on the determined voltage difference. In other words, the voltage difference is updated once a frame of image data arrives.

FIG. 9 is a schematic diagram of two adjacent frames of images and screen display content during a refresh process provided by an embodiment of the present application.

As shown in FIG9 a), the upper half of the Lth frame image is black and the lower half is white; as shown in FIG9 b), the upper half of the L+1th frame image is white and the lower half is black. Wherein, L is an integer greater than or equal to 1.

When the electronic device refreshes the screen in the manner shown in a) of FIG8 , when the L+1 frame image is refreshed halfway, that is, the content actually displayed on the screen is shown in c) of FIG9 , the upper half of the screen displays the data of the upper half of the L+1 frame, and the displayed content is white; the lower half of the screen displays the data of the lower half of the Lth frame, and the displayed content is also white. Therefore, the display content of the entire screen is white. In the case shown in c) of FIG9 , the voltage difference required for the screen is different from the voltage difference required for the screen in the case shown in a) of FIG9 , and is also different from the voltage difference required for the screen in the case shown in b) of FIG9 .

Therefore, in order to adjust the voltage difference to a value closer to the voltage difference required by the screen, it is possible to consider determining and adjusting the voltage difference based on the content to be displayed at a finer granularity than the frame, that is, determining and updating the voltage difference at a higher frequency than the refresh rate of the screen.

Optionally, 2≤N≤M. In this implementation, the frequency of determining and adjusting the voltage difference is higher than the refresh rate of the screen.

For example, N=2. In this implementation, the frequency of determining and adjusting the voltage difference is twice the refresh rate of the screen, that is, each time the half-frame (i.e., half of a frame) of image data is refreshed, the screen brightness, image characteristics and other data can be obtained, and then the voltage difference is determined based on these data, and the voltage difference that drives the screen to emit light is updated based on the determined voltage difference. It can be understood that the image to be displayed in this case is the image to be displayed as shown in Figure c), and the image to be displayed can be combined with the frequency of determining the voltage difference, based on the Lth frame image shown in Figure 9 a) and the L+1th frame image shown in Figure 9 b).

For another example, N=M. In this implementation, the frequency of determining and adjusting the voltage difference is M times the refresh rate of the screen, that is, the screen brightness, image characteristics and other data can be obtained every time a row or column of image data is refreshed, and then the voltage difference is determined based on these data, and the voltage difference that drives the screen to emit light is updated based on the determined voltage difference. It can be understood that the image to be displayed in this case can also be combined based on the Lth frame image and the L+1th frame image in combination with the frequency of determining the voltage difference.

In this implementation, the contents of the two frames to be displayed are taken into consideration at the same time. During the transition period between the two frames of images, the voltage difference can also be adjusted, so that the power consumption can be reduced as much as possible without affecting the display effect.

FIG. 10 is a schematic diagram comparing a voltage difference adjusted using a traditional method provided in an embodiment of the present application and a voltage difference adjusted using the method provided in the present application.

The traditional method determines the voltage difference for driving the screen to emit light based on the screen brightness and the correspondence between various screen brightnesses and various voltage differences. In some implementations, a hysteresis threshold is sometimes added to avoid frequent adjustment of the voltage difference. The traditional method does not consider the content of the image to be displayed, and usually only determines the voltage difference based on the screen brightness.

As shown in a) of FIG. 10 , there is a large margin between the voltage difference adjusted by the traditional method and the voltage difference required by the screen. Although the power consumption can be reduced to a certain extent, the effect is not good and needs to be improved.

As shown in b) of Figure 10, the margin between the voltage difference adjusted by the method provided in the present application and the voltage difference required by the screen is small, which can better match the voltage difference required by the screen and can minimize power consumption without affecting the display effect.

In some embodiments, the voltage difference can be adjusted by dynamically switching between the traditional method and the method provided in this application according to the scene. As an example and not a limitation, for example, the voltage difference can be adjusted by the method provided in this application in a pre-set scene, and the voltage difference can be adjusted by the traditional method in a non-pre-set scene. The pre-set scene includes but is not limited to the video playback scene. It is understood that the non-pre-set scene can be a scene other than the pre-set scene, and this application does not limit this.

The method for screen display provided by the present application, in addition to considering the screen brightness, also combines the image characteristics and/or influencing parameters of the image to be displayed to determine the voltage difference that drives the screen to emit light, and in the case of meeting the light-emitting requirements of the screen, the voltage difference is reduced as much as possible, so that the power consumption of the screen can be reduced, and then the standby time of the electronic device can be extended, and the user experience can be improved. In addition, the data (such as grayscale) of the image to be displayed can be changed under the condition that the conditions are met, and the linkage between the voltage difference and the data of the image to be displayed can be realized, and the power consumption can be further reduced without affecting the display effect. Furthermore, in order to adjust the voltage difference to be closer to the voltage difference required by the screen, it is considered to determine and adjust the voltage difference based on the content to be displayed with finer granularity than the frame. For example, the content of the image to be displayed in the previous and next frames is considered at the same time. During the transition period between the two frames of the image, the voltage difference can also be adjusted. The margin between the voltage difference adjusted in this way and the voltage difference required by the screen is small, which can better match the voltage difference required by the screen, and can reduce the power consumption as much as possible without affecting the display effect.

FIG. 11 is another schematic diagram of the structure of an electronic device applicable to the method for screen display provided in an embodiment of the present application.

As shown in Figure 11, an electronic device suitable for the method for screen display provided in an embodiment of the present application may include a display data processing module, a display content analysis module, a display power supply voltage decision module, a display power supply adjustment module, a display power supply and a screen, etc. In some embodiments, the electronic device may also include a power supply voltage linkage display data adjustment module. Among them, the display power supply, the screen and the display data processing module are currently available modules, and the display content analysis module, the display power supply voltage decision module, the display power supply adjustment module and the power supply voltage linkage display data adjustment module can be used to implement the method provided in the present application, and can be regarded as a functional module for implementing the above method embodiment.

The display data processing module can be used to adjust color, contrast, display compensation or digital-to-analog mapping, etc.

The display content analysis module may be used to analyze key image features (such as the maximum value of grayscale, APL or peak brightness, etc.) of the display content of each frame of image with respect to power requirements.

It should be noted that, although the figure shows that the input data of the display content analysis module comes from the display data processing module, in some embodiments, the input data of the display content analysis module may also come from before the display data processing module, that is, the input data of the display content analysis module is the data to be displayed shown in the figure, and the input data of the display data processing module comes from the display content analysis module. This application does not limit this.

The display power supply voltage decision module can be used to determine the most appropriate voltage difference by integrating various power requirements, such as comprehensive image characteristics, screen brightness, frame rate, screen temperature, screen usage time, display mode or screen characteristics. In this way, it is not necessary to leave enough margin for the voltage difference required by the screen to ensure that the voltage difference decision is more accurate without affecting the display effect. In addition, when it is necessary to adjust the data of the image to be displayed, that is, when the preset conditions are met, the module can also be used to determine which parameters or parameters of the image to be displayed are to be adjusted, and the adjustable parameters include, for example, but are not limited to grayscale.

The display power supply adjustment module can be used to quickly control the display power supply to output a corresponding voltage difference according to the voltage difference determined by the display power supply voltage decision module. In order to ensure that the display power supply can respond quickly at a millisecond-level response speed, a single-line control interface or a new I2C interface can be used between the display power supply adjustment module and the display power supply, and this application does not limit this.

In one embodiment, the display power supply may include but is not limited to an ELVDD power supply and an ELVSS power supply. As an example and not a limitation, when the voltage output by the ELVDD power supply is a fixed voltage value, the voltage output by the ELVSS power supply may be a variable voltage value, and the display power supply adjustment module may adjust the voltage difference for driving the screen to emit light by adjusting the voltage output by the ELVSS power supply.

The power supply voltage linkage display data adjustment module is used to adjust the data of the image to be displayed based on the parameters and parameter values of the image to be displayed determined by the display power supply voltage decision module.

In some embodiments, any one of the display data processing module, display content analysis module, display power supply voltage decision module, display power supply regulation module and power supply voltage linked display data adjustment module can be deployed in a processor or a display driver IC, and this application does not limit this.

The embodiment of the present application also provides an electronic device, which includes corresponding modules for executing the steps in the above method 600. For example, it includes but is not limited to a display content analysis module, a display power supply voltage decision module, a display power supply adjustment module, and a power supply voltage linkage display data adjustment module. The modules included in the electronic device can be implemented by software and/or hardware.

An embodiment of the present application also provides an electronic device, which includes at least one memory and at least one processor, wherein the at least one memory is used to store a computer program, and the at least one processor is used to call and execute the computer program so that the electronic device performs the steps in the above method 600.

Optionally, the processor may be coupled to the memory.

The present application also provides a chip system, which includes at least one processor for implementing the functions involved in the steps of the above method 600.

In one possible design, the chip system also includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

The chip system may be composed of the chip, or may include the chip and other discrete devices.

The embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a computer, the computer executes the steps in the above method 600.

The embodiment of the present application further provides a computer program product, including a computer program, which enables a computer to execute the steps in the above method 600 when the computer program is executed.

It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a display driver IC, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined to perform. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

The terms "unit", "module" and the like used in this specification may be used to represent a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution.

It will be appreciated by those skilled in the art that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in combination with computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed devices, equipment and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more units may be integrated into one module.

In the above embodiments, the functions of each functional module can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (16)

1. A method for screen display, the method comprising:

Acquiring screen brightness and reference factors, wherein the reference factors comprise influence parameters and/or image characteristics of an image to be displayed;

and determining a voltage difference for driving the screen to emit light based on the screen brightness and the reference factor.

2. The method of claim 1, wherein the influencing parameters comprise one or more of: frame rate, screen temperature, screen usage duration, display mode, or characteristics of the screen.

3. The method of claim 1 or 2, wherein the image features comprise a maximum value of gray scale, an average pixel level APL, or a peak luminance.

4. A method according to any one of claims 1 to 3, wherein the reference factor comprises the image characteristic, and wherein the determining a voltage difference to drive screen lighting based on the screen brightness and the reference factor comprises:

determining a voltage difference for driving the screen to emit light based on the screen brightness, the image characteristics and a first mapping relation; the first mapping relation comprises a corresponding relation between various combinations of screen brightness and image characteristics and various voltage differences; or alternatively

Determining a first adjustment amount corresponding to the screen brightness and a second adjustment amount corresponding to the image feature based on a plurality of groups of mapping relations, wherein the plurality of groups of mapping relations comprise corresponding relations between a plurality of screen brightness and the plurality of adjustment amounts and corresponding relations between a plurality of image features and the plurality of adjustment amounts;

a voltage difference for driving the screen to emit light is determined based on the first adjustment amount and the second adjustment amount.

5. A method according to any one of claims 1 to 3, wherein the reference factors include the image characteristics, the voltage difference being determined based on the screen brightness and the image characteristics using a pre-trained model.

6. A method according to any one of claims 1 to 3, wherein the reference factors include the image characteristics and the influencing parameters, and wherein the determining the voltage difference for driving the screen lighting based on the screen brightness and the reference factors comprises:

Determining a voltage difference for driving the screen to emit light based on the screen brightness, the image characteristics, the influence parameters and a second mapping relation; the second mapping relation comprises a corresponding relation between various combinations of screen brightness, image characteristics and influence parameters and various voltage differences; or alternatively

Determining a first adjustment amount corresponding to the screen brightness, a second adjustment amount corresponding to the image characteristic and a third adjustment amount corresponding to the influence parameter based on a plurality of groups of mapping relations, wherein the plurality of groups of mapping relations comprise corresponding relations of various screen brightness and various adjustment amounts, corresponding relations of various image characteristics and various adjustment amounts and corresponding relations of various influence parameters and various adjustment amounts;

A voltage difference for driving the screen to emit light is determined based on the first adjustment amount, the second adjustment amount, and the third adjustment amount.

7. A method according to any one of claims 1 to 3, wherein the reference factors include the image features and the influencing parameters, the voltage difference being determined based on the screen brightness, the image features and the influencing parameters using a pre-trained model.

8. A method according to any one of claims 1 to 3, wherein the reference factors include the influencing parameters, and wherein the determining a voltage difference for driving the screen to emit light based on the screen brightness and the reference factors comprises:

Determining a voltage difference for driving the screen to emit light based on the screen brightness, the influence parameter and a third mapping relation; the third mapping relation comprises a corresponding relation between various combinations of screen brightness and influence parameters and various voltage differences; or alternatively

Determining a first adjustment amount corresponding to the screen brightness and a third adjustment amount corresponding to the influence parameter based on a plurality of groups of mapping relations, wherein the plurality of groups of mapping relations comprise the corresponding relations between the plurality of screen brightness and the plurality of adjustment amounts and the corresponding relations between the plurality of influence parameters and the plurality of adjustment amounts;

a voltage difference for driving the screen to emit light is determined based on the first adjustment amount and the third adjustment amount.

9. A method according to any one of claims 1 to 3, wherein the reference factors comprise the influencing parameters, and the voltage difference is determined based on the screen brightness and the influencing parameters using a pre-trained model.

10. The method of any one of claims 1 to 7, wherein the reference factor comprises the image characteristic, the method further comprising, prior to the determining a voltage difference to drive screen lighting based on the screen brightness and the reference factor:

Under the condition that a preset condition is met, adjusting the gray scale of the image to be displayed;

and updating the image characteristics based on the adjusted gray scale.

11. The method of claim 10, wherein the image to be displayed comprises a plurality of pixel blocks, each pixel block comprising at least one pixel point, the plurality of pixel blocks not overlapping each other; the preset conditions include: the proportion of the number of the target pixel blocks in the image to be displayed to the total number of the pixel blocks is larger than zero and smaller than or equal to a preset proportion threshold, and the target pixel blocks are pixel blocks with the maximum gray level exceeding the preset gray level threshold.

12. The method of claim 10 or 11, wherein after said determining a voltage difference to drive screen lighting based on said screen brightness and said reference factor, said method further comprises:

And displaying a first image based on the voltage difference, wherein the first image is an image of which the gray level is adjusted for the image to be displayed, the voltage difference is smaller than a first voltage difference, and the first voltage difference is a voltage difference when the image to be displayed is displayed under the screen brightness.

13. The method of any one of claims 1 to 12, wherein the voltage difference is determined at a frequency N times a refresh rate of the screen, the N being an integer greater than or equal to 1 and less than or equal to M, the M being a number of rows or columns of pixel cells included in the screen in a refresh direction of the screen, the M being an integer greater than or equal to 2.

14. An electronic device comprising at least one processor and at least one memory, wherein,

The at least one memory is used for storing a computer program;

the at least one processor is configured to invoke the computer program to cause the electronic device to perform the method of any of claims 1-13.

15. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed, is adapted to carry out the method of any one of claims 1 to 13.

16. A computer program product comprising a computer program which, when run, performs the method of any one of claims 1 to 13.