CN120510801B - Glass-based small-space display screen active matrix control system based on AM driving - Google Patents
Glass-based small-space display screen active matrix control system based on AM drivingInfo
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- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
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Abstract
本发明属于电子电路结构与显示技术领域，本发明公开了基于AM驱动的玻璃基小间距显示屏主动矩阵控制系统，玻璃基像素阵列模块，用于在玻璃基板上构建微缩像素单元阵列，采用光刻与薄膜沉积技术，进行超小像素间距布局，并在每个像素单元内部集成独立子像素分区；主动矩阵驱动模块，在微缩像素单元阵列上引入独立薄膜晶体管和存储电容，形成可寻址驱动网络；将独立薄膜晶体管作为主动矩阵开关单元，将存储电容作为电荷保持单元，对每个像素单元和独立子像素分区的电压与电流进行独立控制，并构建行列扫描路径；显著提升显示效果的清晰度、色彩准确性、刷新速度及功耗控制。
The present invention belongs to the field of electronic circuit structure and display technology. The present invention discloses an active matrix control system for a glass-based fine-pitch display screen based on AM drive. The glass-based pixel array module is used to construct a miniature pixel unit array on a glass substrate, adopts photolithography and thin film deposition technology to perform ultra-small pixel pitch layout, and integrates independent sub-pixel partitions within each pixel unit; the active matrix drive module introduces independent thin-film transistors and storage capacitors on the miniature pixel unit array to form an addressable drive network; uses independent thin-film transistors as active matrix switch units and storage capacitors as charge retention units, independently controls the voltage and current of each pixel unit and independent sub-pixel partition, and constructs row and column scanning paths; and significantly improves the clarity, color accuracy, refresh rate and power consumption control of the display effect.
Description
Technical Field
The invention relates to the technical field of electronic circuit structures and displays, in particular to an active matrix control system of a glass-based small-space display screen based on AM driving.
Background
The patent publication No. CN111562855A discloses a display screen touch point adjustment control method and a display screen touch point adjustment control system, wherein the direct distance between eyes of a user and a preset reference object, the relative inclination angle and the horizontal distance between the user and the display screen are obtained, the offset distance of the sight of the user, which is influenced by the thickness of the glass panel, is obtained through processing according to the obtained inclination angle and the thickness of the glass panel of the display screen, then the touch point applied to the display screen by the user is combined with the touch point position of the user, and the new position of the touch point after adjustment is obtained based on the obtained offset distance is obtained, so that adverse influence of the thickness of the glass panel of the display screen on the touch of the user when the display screen is touched by the user is avoided, the problem of touch dislocation caused by the refraction angle due to the thickness of the glass panel of the display screen is solved, and the display screen is ensured to respond to the touch operation action applied to the display screen by the user timely and accurately.
The existing glass-based small-space display screen active matrix control system mainly has the following problems:
In the prior art, when designing a thin film transistor, parameters such as gate length, source drain width and the like are usually set based on experience or a static model, and are difficult to dynamically optimize according to current requirements, high-resolution driving requirements and leakage control targets of different pixel units, so that the problems of low driving efficiency, overlarge leakage current or high power consumption are easily caused. The prior art lacks a system method in the aspects of connection line layout and wiring density optimization, and is easy to cause the problems of drive signal interference, crosstalk enhancement, unstable electrical connection and the like;
The current refreshing strategy is mostly based on a fixed refreshing rate or coarse granularity control logic, and cannot be combined with the variable quantity of each frame of image content to carry out fine refreshing rate adjustment, so that the power consumption is not energy-saving enough under static content, the refreshing rate is possibly insufficient under dynamic content, and image smear, delay or flickering phenomenon is caused. The power consumption of the traditional display screen is generally estimated by adopting a fixed proportionality constant, and the real-time change of the ambient brightness or the working temperature cannot be dynamically considered.
Conventional color mapping methods generally use a fixed color transformation matrix or a static lookup table, and it is difficult to dynamically adjust color saturation and contrast, so that under the condition of rapid brightness change or dense detail area, distortion or detail loss of an image is easy to occur. The gamma correction adopts a fixed value or single curve adjustment based on the brightness of the whole frame, and can not carry out differential correction on the brightness of different areas in the image, so that the problems of over-darkness of a dark part, over-exposure of a bright part and the like are caused, and especially, the visual experience is poor in a scene with a high dynamic range.
In view of the above, the present invention proposes an active matrix control system for a glass-based small-pitch display screen based on AM driving to solve the above-mentioned problems.
Disclosure of Invention
In order to overcome the defects in the prior art and achieve the purposes, the invention provides the following technical scheme that the active matrix control system of the glass-based small-space display screen based on AM driving comprises:
the glass-based pixel array module is used for constructing a miniature pixel unit array on a glass substrate, performing ultra-small pixel interval layout by adopting a photoetching and film deposition technology, and integrating independent sub-pixel partitions in each pixel unit;
The active matrix driving module introduces an independent thin film transistor and a storage capacitor on the micro pixel unit array to form an addressable driving network, takes the independent thin film transistor as an active matrix switch unit, takes the storage capacitor as a charge holding unit, independently controls the voltage and the current of each pixel unit and each independent sub pixel partition, and constructs a row-column scanning path;
the pixel driving generation module receives externally input image data and video data, adopts a dynamic color mapping algorithm and an adaptive gamma correction technology, optimizes the color expression of the image data and the video data according to the ultra-small pixel spacing layout, and generates corresponding pixel driving data;
The dynamic refresh control module is used for carrying out row and column addressing and data refreshing on the pixel unit area which is changed through an image change detection mechanism based on the addressable driving network and the pixel driving data, dynamically adjusting a row and column scanning path and generating corresponding refresh state data;
The power consumption control management module is used for monitoring the running state of the display screen in real time and adjusting the running parameters of the display screen based on the pixel driving data and the refreshing state data, and dynamically adjusting the working current and the working voltage of each pixel unit and each independent sub-pixel partition by combining the running state change condition of the display screen to carry out self-adaptive power consumption management.
Preferably, the method for performing the ultra-small pixel pitch layout includes:
Selecting a transparent glass substrate, removing dirt and impurities on the surface of the glass substrate through ultrasonic cleaning and chemical cleaning, depositing different functional layers on the glass substrate according to preset design requirements by a thin film deposition technology, wherein the functional layers comprise a metal electrode layer, an oxide dielectric layer and a semiconductor material layer;
coating the surface of the glass substrate by using photoresist after the film deposition is completed, and irradiating the photoresist by using ultraviolet light through a mask, wherein the mask comprises a preset design pattern of a micro pixel unit array, and after exposure, the photoresist part of an unexposed area is removed by using a developing solution, and the pattern of the exposed area is reserved, so that the preset design pattern is formed on the glass substrate;
Selecting dry etching and wet etching to remove redundant materials according to different functional layers, reserving a required miniature pixel unit array, constructing the miniature pixel unit array on a glass substrate according to preset design requirements in the photoetching and film deposition processes, and completing the layout of the ultra-small pixel spacing when the pixel unit spacing is smaller than or equal to the preset pixel unit spacing by a preset pixel unit spacing threshold.
Preferably, the method for integrating independent sub-pixel partitions includes:
Dividing sub-pixels into sub-pixels based on ultra-small pixel spacing, determining the number and layout of the sub-pixels to be divided in each pixel unit according to the preset resolution requirement of the display screen, and dividing the interior of each pixel unit into three sub-pixels which respectively correspond to red, green and blue color channels;
And integrating an independent electrode layer in each sub-pixel region, controlling the current supply of each sub-pixel by each independent electrode layer, integrating an oxide dielectric layer and a semiconductor material layer in each sub-pixel, and finally forming independent sub-pixel partitions in each pixel unit through the integration of the electrode layer, the oxide dielectric layer and the semiconductor material layer.
Preferably, the method of forming an addressable drive network comprises:
Depositing a thin film material on a glass substrate by a thin film deposition technology to form a semiconductor layer of the thin film transistor; controlling the size and electrode layout of the thin film transistor according to preset thin film transistor design requirements, wherein the preset thin film transistor design requirements comprise control of the size of the thin film transistor, control of the electrode layout and optimization control of electrical connection;
the control of the size of the thin film transistor comprises the source-drain electrode and grid electrode spacing, the source-drain electrode size and the grid electrode size of the thin film transistor, the control of the electrode layout comprises the arrangement of the grid electrode and the source-drain electrode and the spacing of the grid electrode, the arrangement of the grid electrode and the source-drain electrode comprises a linear layout and a staggered layout, and the optimized control of the electrical connection comprises the layout and the wiring density of connecting wires;
each thin film transistor is paired with a corresponding pixel unit or an independent sub-pixel partition one by one, the thin film transistors are arranged in parallel or in staggered arrangement, the storage capacitor and the thin film transistors share a pixel unit area, an electrode layer and a dielectric layer of the storage capacitor are constructed through dry etching or wet etching, and an addressable driving network is formed through integration of the independent thin film transistors and the storage capacitor.
Preferably, the method for independently controlling the voltage and current of each pixel unit and independent sub-pixel partition comprises:
The method comprises the steps of taking an independent thin film transistor as an active matrix switch unit, dividing each pixel unit or independent sub-pixel into areas to be distributed with an independent thin film transistor, determining the voltage and the current of each pixel unit through the switch action of the thin film transistor, regulating the current flow between a source electrode and a drain electrode through a grid control signal in each thin film transistor, presetting a grid voltage threshold value, conducting between the source electrode and the drain electrode when the grid voltage is greater than or equal to the preset grid voltage threshold value, allowing the current to pass through the pixel unit, and cutting off the current between the source electrode and the drain electrode when the grid voltage is smaller than the preset grid voltage threshold value;
In the display process of the display screen, the thin film transistor controls the current to flow into the storage capacitor and locks the charge through the storage capacitor, when a line scanning path moves to the pixel, the thin film transistor is conducted, the display screen is driven to emit light through the charge in the storage capacitor, and when the line scanning path is finished, the storage capacitor holds the charge until the next line scanning;
The storage capacitor provides required voltage, controls the current to flow to the display screen through each thin film transistor, emits corresponding light, and independently controls the voltage and current of each pixel unit and the independent sub-pixel partition through the thin film transistor and the storage capacitor.
Preferably, the method for constructing a line-column scanning path comprises the following steps:
The preset display screen is provided with Row pixels, each row of pixels includingSub-pixel partition, line scanning is controlled by a control signalTo control the operation of the device,Representing the currently selected row, for the firstLine, line scan signalWhen the thin film transistors of the row are in a conducting state, the current is controlled through the scanning signal;
in the row and column scanning process, progressive scanning or column scanning is used, and the following is preset in the progressive scanning process The control signals of the row and column scanning paths are in sequence of C1, C2, C3, cn, n represents the total number of the control signals, the columns are selected in sequence, and the row scanning signals activate the first columnThe row and column scanning signals activate each column in turn to form a progressive scanning path;
each time the display content of the display screen is updated, a row-column scanning process is required, and for the display screens with different resolutions, the refresh period is determined by the complexity of the display content and the screen refresh rate;
Presetting a quantization mode to represent the change degree of display contents of a display screen, presetting Representing the content variation of the t-th frame, quantized by comparing the pixel differences of two consecutive frames of images;
Content variation based on display screenDefining a content variation threshold for a display screenWhen (when)Greater thanWhen the refresh rate is increasedWhen (1)Less than or equal toWhen the refresh rate is reducedDefining a refresh rate adjustment function versus refresh rateDynamically adjusting;
presetting power consumption of display screen Wherein, the method comprises the steps of,Representing the power consumption of the display screen; a proportionality constant related to the display screen hardware characteristics; Representing the average brightness value of the current display screen image;
Consider brightness and temperature versus the proportionality constant Is to compare the proportional constant by the proportional constant adjustment formulaThe line scanning signals and the column scanning signals are coordinated through a synchronous clock, and after the line scanning signals select any line in each line activation period, the column scanning signals activate each column of sub-pixel subareas in sequence according to a preset sequence to form complete line pixel display contents;
Within each row scanning period, the column scanning sequence is from the first column to the first column And after all columns are scanned, switching the row scanning signals to the next row, starting the column scanning signals from the first column again, and repeating until all the rows are scanned completely, thereby obtaining a row-column scanning path.
Preferably, the image data includes still image files, real-time image data, color space data, and thermally imaged image data, and the video data includes video streams, video frame data, real-time video data, video compression decoding data, and video metadata.
Preferably, the method of generating corresponding pixel driving data includes:
performing color gamut mapping on image data and video data, and defining an initial color gamut to which the image data and the video data belong And the target color gamut to be achieved after optimizationAccording to the actual color distribution characteristics of the image data and the video data, the color value of each pixel point is processed through a group of dynamically-changing color mapping functions to compress or expand the color gamut;
In the mapping process, the color mapping function is based on the color values of the image data and the video data, and dynamically adjusts according to the local brightness at the current pixel position point;
Aiming at the brightness environments and content changes of different display screens, an adaptive gamma correction function is applied, and a gamma correction curve is adaptively adjusted according to the average brightness changes of the local area of the current frame; and quantizing the image data and the video data subjected to dynamic color mapping and adaptive gamma correction into pixel driving instructions required by a display screen to obtain corresponding pixel driving data.
Preferably, the method for generating the corresponding refresh state data includes:
comparing continuous frame image data with video data through an image change detection mechanism, judging whether each pixel unit has brightness value or color value change, and if the pixel change amplitude of any pixel unit exceeds a preset pixel change amplitude threshold value, marking the pixel unit as a pixel unit to be refreshed;
Based on the addressable driving network, addressing the row and column addresses of the pixel units to be refreshed, only carrying out row and column addressing and driving signal loading on the pixel unit areas to be refreshed, and carrying out regional local refreshing;
And recording row and column addresses, refreshing time information and driving loads of the pixel units to be refreshed in each refreshing period to generate corresponding refreshing state data.
Preferably, the method for adaptive power consumption management includes:
Analyzing the brightness, color value, display content change condition and display screen refreshing period of each pixel unit through the generated pixel driving data and refreshing state data to determine the operation state of the display screen, and dynamically adjusting the working parameters of the display screen after the operation state of the display screen is monitored;
according to the change condition of the running state of the display screen, combining real-time pixel driving data and refreshing state data, setting a power consumption regulation mode to carry out self-adaptive power consumption management, wherein the power consumption regulation mode comprises a low power consumption mode, a high efficiency mode and a local regulation mode;
When the display content change rate of the display screen is greater than or equal to the display content change rate threshold of the preset display screen, the system enters a high-efficiency mode;
The local adjustment mode comprises presetting a display content brightness threshold, reducing power consumption by reducing current and voltage of an area with the display content brightness smaller than the preset display content brightness threshold, and increasing power consumption by increasing current and voltage of the area with the display content brightness larger than or equal to the preset display content brightness threshold for self-adaptive power consumption management.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, the thin film transistor can realize high-efficiency switching performance by accurately designing the gate length and the source-drain width. The short gate length can accelerate the switching speed, improve response time and driving efficiency, and simultaneously ensure that the thin film transistor can bear required current without wasting extra power consumption by precisely controlling the width of the source electrode and the drain electrode. The optimized design can not only improve the response speed of the display screen, but also effectively reduce the power consumption and prolong the endurance time of the equipment.
By introducing a dynamic proportionality constant adjusting mechanism, the invention can continuously and stably optimize the power consumption performance under different environments and different use modes, realize the energy efficiency optimization of environment self-adaption and remarkably enlarge the application range of the system. By using the small disturbance linearization method, the higher precision requirement can be achieved in most practical scenes only by dynamically correcting the proportionality constant through a simple linear formula. The method has the advantages of extremely low calculation cost, easy direct realization in the existing hardware, extremely small occupation of system resources, suitability for consumer electronics products with light weight and high real-time requirements, effective reduction of unnecessary energy consumption through more accurate and dynamic power consumption adjustment, remarkable improvement of the equipment endurance time, and prolonged overall reliable service life of the equipment through reduction of the hardware damage risk caused by overheating.
The gamma sensitivity coefficient is dynamically adjusted to avoid the large fluctuation of the gamma value caused by the tiny change of the brightness, thereby preventing color distortion and image overexposure or darkness. And in a high-contrast scene, the details of the bright part and the dark part are effectively reserved, and overexposure and detail loss are avoided. The smooth gamma response avoids the bright spot effect and noise enhancement caused by small brightness change, and the gamma sensitivity is dynamically adjusted according to the local brightness difference of the image, thereby improving the color accuracy and detail expression of the image.
Drawings
FIG. 1 is a schematic diagram of an active matrix control system of a glass-based small-pitch display screen based on AM driving;
FIG. 2 is a flow chart of a method for generating corresponding refresh state data according to the present invention;
FIG. 3 is a schematic flow chart of the active matrix control method of the glass-based small-pitch display screen based on AM driving.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and fig. 2, an embodiment of the active matrix control system for an AM-driven glass-based small-pitch display screen according to the present invention further includes:
with the continuous progress of display technology, glass-based small-pitch display screens are widely used in various display fields due to their excellent resolution and high-definition display effects. However, there are several technical challenges in existing active matrix drive (AM drive) based display control systems, and there is a need to improve display quality, reduce power consumption, and improve driving efficiency.
Currently in Thin Film Transistor (TFT) designs, parameters such as gate length, source drain width, etc. are typically set based on empirical or static models. Dynamic optimization cannot be performed according to current requirements, high-resolution driving requirements and leakage control targets of different pixel units. As a result, the driving efficiency is not high, the leakage current is too large, or the power consumption is too high. For example, the gate length is generally balanced between the switching speed and the leakage current, and if the gate length cannot be accurately adjusted according to the display requirement, the response speed and the current control accuracy of the display screen may be affected, so that the display effect and the stability are affected.
Current thin film transistor designs lack systematic approaches in connection with wire layout and routing density optimization. The conventional design often ignores the layout density and electrical stability of the connection lines, resulting in problems of driving signal interference, crosstalk enhancement, unstable electrical connection, etc., especially in high resolution display screens, the stability of the electrical connection is critical. Optimizing wiring layout and reducing signal interference are key to improving display performance, but the prior art fails to propose an effective solution.
Existing display screen driving network structures typically rely on static arrangements or row-column matrix scanning. This fixed scanning approach is difficult to meet the flexible addressing requirements of high resolution, multi-subpixel partitioned display requirements, and especially lacks dynamic adjustment capabilities in the face of complex display control strategies. The scan path cannot be dynamically adjusted according to the change of the real-time image content, so that redundant operation exists in the refreshing process, power consumption is wasted, and response speed is limited.
The current line-column scanning path usually adopts a fixed line-by-line or column-by-column scanning mode, and the scanning path cannot be dynamically reconstructed according to the real-time image content change. Since such a fixed scanning manner cannot flexibly cope with a change in display content, the refresh of a partial area is not efficient enough, unnecessary redundant operation may be required, power consumption is increased, and response speed is reduced. Especially under dynamic content, inflexibility of the refreshing process may cause phenomena such as image smear, delay or flickering, and the visual experience of a user is affected.
Conventional refresh strategies are typically based on a fixed refresh rate or coarse-grained control logic that fails to provide fine-grained refresh rate adjustment in conjunction with the amount of change in image content per frame. Under static content, the fixed refreshing mode can not save energy and still consume more power consumption, while under dynamic content, the refreshing rate may be insufficient, so that image smear or visual incoherence is caused, and the display effect is affected. Therefore, the refresh policy cannot be flexibly adjusted to adapt to the changing requirements of different images, which becomes a big bottleneck in the prior art.
Conventional color mapping methods typically employ a fixed color transformation matrix or static look-up table, which cannot dynamically adjust color saturation and contrast. Under the rapid change of brightness or the dense detail area, the image is easy to be distorted or the detail is easy to be lost, and the display effect is influenced.
In the traditional power consumption control method, a fixed proportionality constant is adopted for power consumption estimation, and a power consumption control strategy cannot be dynamically adjusted to adapt to the actual running environment of a display screen. The real-time change of factors such as ambient brightness, working temperature and the like is not considered, so that the energy efficiency of the display screen in different environments is not high. For example, in low brightness environments, the power consumption of the display screen is not sufficiently optimized, while in high brightness or dynamic scenarios, the power consumption may be too high, affecting the endurance and stability of the display device.
In summary, there are many aspects to be improved in the design of the display control system in the prior art, such as the stationarity of the design of the thin film transistor, the singleness of the driving network structure, the fixity of the refresh path and the strategy, and the limitation of the color mapping and the gamma correction. These problems not only affect the display effect and system efficiency, but also restrict the further development of high resolution, low power consumption, high dynamic range display technology.
In order to effectively solve the above problems, the present invention provides an active matrix control system for a glass-based small-pitch display screen based on AM driving, comprising:
the glass-based pixel array module is used for constructing a miniature pixel unit array on a glass substrate, performing ultra-small pixel interval layout by adopting a photoetching and film deposition technology, and integrating independent sub-pixel partitions in each pixel unit;
The active matrix driving module introduces an independent thin film transistor and a storage capacitor on the micro pixel unit array to form an addressable driving network, takes the independent thin film transistor as an active matrix switch unit, takes the storage capacitor as a charge holding unit, independently controls the voltage and the current of each pixel unit and each independent sub pixel partition, and constructs a row-column scanning path;
the pixel driving generation module receives externally input image data and video data, adopts a dynamic color mapping algorithm and an adaptive gamma correction technology, optimizes the color expression of the image data and the video data according to the ultra-small pixel spacing layout, and generates corresponding pixel driving data;
The dynamic refresh control module is used for carrying out row and column addressing and data refreshing on the pixel unit area which is changed through an image change detection mechanism based on the addressable driving network and the pixel driving data, dynamically adjusting a row and column scanning path and generating corresponding refresh state data;
The power consumption control management module is used for monitoring the running state of the display screen in real time and adjusting the running parameters of the display screen based on the pixel driving data and the refreshing state data, and dynamically adjusting the working current and the working voltage of each pixel unit and each independent sub-pixel partition by combining the running state change condition of the display screen to carry out self-adaptive power consumption management.
The method for carrying out the ultra-small pixel pitch layout comprises the following steps:
Selecting a transparent glass substrate, removing dirt and impurities on the surface of the glass substrate through ultrasonic cleaning and chemical cleaning, depositing different functional layers on the glass substrate according to preset design requirements by a thin film deposition technology (comprising chemical vapor deposition, physical vapor deposition and sputtering deposition), wherein the functional layers comprise a metal electrode layer, an oxide dielectric layer and a semiconductor material layer;
coating the surface of the glass substrate by using photoresist after the film deposition is completed, and irradiating the photoresist by using ultraviolet light through a mask, wherein the mask comprises a preset design pattern of a micro pixel unit array, and after exposure, the photoresist part of an unexposed area is removed by using a developing solution, and the pattern of the exposed area is reserved, so that the preset design pattern is formed on the glass substrate;
Selecting dry etching and wet etching to remove redundant materials according to different functional layers, reserving a required miniature pixel unit array, constructing the miniature pixel unit array on a glass substrate according to preset design requirements in the photoetching and film deposition processes, and completing the layout of the ultra-small pixel spacing when the pixel unit spacing is smaller than or equal to the preset pixel unit spacing by a preset pixel unit spacing threshold.
The method for integrating independent sub-pixel partitions comprises the following steps:
The method comprises the steps of carrying out sub-pixel partitioning on the basis of ultra-small pixel spacing, determining the number and layout of sub-pixels to be partitioned in each pixel unit according to the preset resolution requirement of a display screen, dividing the interior of each pixel unit into three sub-pixels which respectively correspond to red, green and blue color channels, wherein the preset resolution requirement of the display screen comprises the size, arrangement mode and distance between the sub-pixels, and specifically, how to ensure the electrical and optical independence of each sub-pixel under the condition of the ultra-small pixel spacing is considered during design so as to prevent the problems of color interference or uneven light transmission and the like. The physical size of each sub-pixel also needs to be considered in the design to ensure that they fit the overall display effect of the display screen.
And integrating an independent electrode layer in each sub-pixel region, controlling the current supply of each sub-pixel by each independent electrode layer, integrating an oxide dielectric layer and a semiconductor material layer in each sub-pixel, and finally forming independent sub-pixel partitions in each pixel unit through the integration of the electrode layer, the oxide dielectric layer and the semiconductor material layer.
The method for forming the addressable drive network comprises the following steps:
Depositing a thin film material on a glass substrate by a thin film deposition technology to form a semiconductor layer of the thin film transistor; controlling the size and electrode layout of the thin film transistor according to preset thin film transistor design requirements, wherein the preset thin film transistor design requirements comprise control of the size of the thin film transistor, control of the electrode layout and optimization control of electrical connection;
the control of the size of the thin film transistor comprises the source-drain electrode and grid electrode spacing, the source-drain electrode size and the grid electrode size of the thin film transistor, the control of the electrode layout comprises the arrangement of the grid electrode and the source-drain electrode and the spacing of the grid electrode, the arrangement of the grid electrode and the source-drain electrode comprises a linear layout and a staggered layout, and the optimized control of the electrical connection comprises the layout and the wiring density of connecting wires;
it should be noted that the gate length affects the switching speed and the leakage current of the thin film transistor. In order to ensure stable operation of the thin film transistor in a high resolution display screen, the gate length needs to be designed according to the target pixel size and the driving requirement of the display screen. Generally, a shorter gate length may reduce switching time and improve driving efficiency, but may also result in increased leakage current. Therefore, the gate length needs to balance the relationship between the switching speed and the leakage current. The width of the source and drain electrodes influences the conductivity of the thin film transistor and determines the current carrying capacity of the thin film transistor.
For each pixel unit, the source-drain width is large enough to ensure the required current to be driven, but not too large to avoid increasing power consumption and occupation space. Therefore, the source-drain width needs to be precisely selected according to the pixel current requirements and power consumption targets. In the design of the thin film transistor, the distance between the source and drain electrodes and the gate electrode needs to be controlled very precisely to ensure switching characteristics and current control accuracy. Too large a pitch can affect switching efficiency and too small a pitch can result in a short circuit or excessive leakage current. Therefore, the design needs to ensure the distance between the source electrode and the drain electrode and the grid electrode to reduce the current leakage to the maximum extent, and simultaneously ensure enough switching performance.
Each thin film transistor is paired with a corresponding pixel unit or an independent sub-pixel partition one by one, the thin film transistors are arranged in parallel or in staggered arrangement, the storage capacitor and the thin film transistors share a pixel unit area, an electrode layer and a dielectric layer of the storage capacitor are constructed through dry etching or wet etching, and an addressable driving network is formed through integration of the independent thin film transistors and the storage capacitor.
The method for independently controlling the voltage and the current of each pixel unit and each independent sub-pixel partition comprises the following steps:
The method comprises the steps of taking an independent thin film transistor as an active matrix switch unit, dividing each pixel unit or independent sub-pixel into areas to be distributed with an independent thin film transistor, determining the voltage and the current of each pixel unit through the switch action of the thin film transistor, regulating the current flow between a source electrode and a drain electrode through a grid control signal in each thin film transistor, presetting a grid voltage threshold value, conducting between the source electrode and the drain electrode when the grid voltage is greater than or equal to the preset grid voltage threshold value, allowing the current to pass through the pixel unit, and cutting off the current between the source electrode and the drain electrode when the grid voltage is smaller than the preset grid voltage threshold value;
In the display process of the display screen, the thin film transistor controls the current to flow into the storage capacitor and locks the charge through the storage capacitor, when a line scanning path moves to the pixel, the thin film transistor is conducted, the display screen is driven to emit light through the charge in the storage capacitor, and when the line scanning path is finished, the storage capacitor holds the charge until the next line scanning;
The storage capacitor provides required voltage, controls the current to flow to the display screen through each thin film transistor, emits corresponding light, and independently controls the voltage and current of each pixel unit and the independent sub-pixel partition through the thin film transistor and the storage capacitor.
The method for constructing the line-column scanning path comprises the following steps:
the row-column scan path is to select pixels to be updated row by column by controlling the voltages and currents of the rows and columns. Each pixel cell (and sub-pixel partition therein) is independently controlled by a Thin Film Transistor (TFT) and storage capacitor.
The preset display screen is provided withRow pixels, each row of pixels includingSub-pixel partition, line scanning is controlled by a control signalTo control the operation of the device,Representing the currently selected row, for the firstLine, line scan signalWhen the thin film transistors of the row are in a conducting state, the current is controlled through the scanning signal;
in the row and column scanning process, progressive scanning or column scanning is used, and the following is preset in the progressive scanning process The control signals of the row and column scanning paths are in sequence of C1, C2, C3, cn, n represents the total number of the control signals, the columns are selected in sequence, and the row scanning signals activate the first columnThe row and column scanning signals activate each column in turn to form a progressive scanning path;
each time the display content of the display screen is updated, a row-column scanning process is required, and for the display screens with different resolutions, the refresh period is determined by the complexity of the display content and the screen refresh rate;
Presetting a quantization mode to represent the change degree of display contents of a display screen, presetting Representing the content variation of the t-th frame, quantized by comparing the pixel differences of two consecutive frames of images;Wherein, the method comprises the steps of,Representing the number of rows of display screen pixels; Representing the number of columns of display screen pixels; Represent the first The frame image is at the firstLine 1Pixel values of the columns; Represent the first The frame image is at the firstLine 1Pixel values of the columns; an index representing the number of frames;
If it is Higher values of (a) indicate that the display content is changing more, possibly requiring a higher refresh rate, ifThe display content is lower, so that the display content is less in change, and the refresh rate can be reduced; on a high-resolution display screen, if the refresh rate is insufficient, image updating may be delayed, so that the display effect is not ideal, the smear phenomenon is generated, and the user experience is affected;
In order to solve the problems, the refresh rate of the display screen is adjusted in real time according to the change of the display content to ensure that the refresh rate is matched with the resolution, and when the change of the display content is not large, the low refresh rate can meet the requirement, but if the display content is changed rapidly (such as playing video or high-frame rate games), the refresh rate needs to be improved to ensure smooth display of the images. The problem of unmatched refresh rate and resolution can be avoided and the display effect is optimized by dynamically adjusting the refresh rate;
content variation based on display screen Defining a content variation threshold for a display screenWhen (when)Greater thanWhen the refresh rate is increasedWhen (1)Less than or equal toWhen the refresh rate is reducedDefining a refresh rate adjustment function versus refresh rateDynamically adjusting the refresh rate to beWherein, the method comprises the steps of,Representing the display screen at the firstRefresh rate at frame time; Representing a preset maximum refresh rate; Representing a preset minimum refresh rate;
it should be noted that the refresh rate of the display screen Must be of the same resolutionThe refresh rate needs to be high enough to ensure smooth display of the image, especially at high resolution, and the relationship between the refresh period and the refresh rate is that;Representing the time of display per frame, and on high resolution displays, the refresh period is required to be short enough so that each pixel can be updated quickly. Presetting the resolution of the display screen asThen the updated pixel count per second isIf the image content is changed greatlyHigh), more pixel updates are needed, which meansNeeds to be increased if the content change is smallLow), the update frequency can be reduced to save power consumption;
An important goal of dynamic refresh rates is to reduce unnecessary power consumption. In the case of static content, a lower refresh rate will help to save power consumption, while in the case of dynamic content, an increased refresh rate is required to ensure smooth display.
Presetting power consumption of display screenWherein, the method comprises the steps of,Representing the power consumption of the display screen; a proportionality constant related to the display screen hardware characteristics; Representing the average brightness value of the current display screen image;
In the case of a still image, Lower, the system may reduce the refresh rateTo save power consumption and for dynamic video or high frame rate images,Higher refresh rateMany display power consumption management methods employ static or preset power consumption models, which generally assume that the display is operated under certain fixed environmental conditions without taking into account dynamic changes in brightness and temperature during actual use. This results in inaccurate prediction of power consumption, and problems of excessive or insufficient calculation of power consumption in a high-brightness or high-temperature environment may occur. In still image display, the system may maintain a high refresh rate or brightness, which may result in unnecessary power consumption. Under the high-temperature environment, the hardware may consume excessive power, and even affect the stability and service life of the hardware. Without a dynamic adjustment mechanism, the display screen cannot reduce power consumption to the maximum extent while ensuring the display effect.
Consider brightness and temperature versus the proportionality constantIs to compare the proportional constant by the proportional constant adjustment formulaDynamically adjusting the design, wherein the proportional constant adjusting formula is as followsWherein, the method comprises the steps of,Representing the proportionality constant after dynamic adjustment; Representing the luminance sensitivity coefficient, according to expert experience, The value of (2) is between 0 and 1; Representing the temperature sensitivity coefficient, according to expert experience, Has a value ranging from 0 to 1, andAndThe sum is 1; representing the average temperature of the current display screen image;
It should be noted that in engineering practice, hardware characteristics (such as backlight type, display driving circuit efficiency, etc.) are often not fixed, but are affected by external environments (such as brightness and temperature). Therefore, the dynamic adjustment of the proportionality constant is a reasonable design choice, so that the display screen can automatically optimize power consumption calculation according to environmental changes (brightness changes and temperature changes), and the adaptability of the system under different scenes is improved. The proportionality constant adjustment formula is designed based on the idea of small disturbance linear approximation. By assuming that the response of power consumption to these inputs is linear with a small range of brightness and temperature variation, the linear approximation can effectively reduce the computational complexity of the system and adapt to real-time dynamic adjustment to achieve the purpose of optimizing power consumption.
Compared with the prior art, the invention has the beneficial effects that by introducing a dynamic proportionality constant adjustment mechanism, the power consumption performance can be continuously and stably optimized under different environments (high brightness, high temperature, low temperature and the like) and different use modes (static images, dynamic videos and high frame rate display), the energy efficiency optimization of environment self-adaption is realized, and the application range of the system is obviously enlarged. By using the small disturbance linearization method, the higher precision requirement can be achieved in most practical scenes only by dynamically correcting the proportionality constant through a simple linear formula. The method has extremely low calculation cost, is easy to directly realize in the existing hardware (such as a display control chip and an MCU), has extremely small occupation of system resources, is very suitable for consumer electronic products with light weight and high real-time requirements, effectively reduces unnecessary energy consumption through more accurate and dynamic power consumption adjustment, remarkably improves the endurance time of equipment, and prolongs the whole reliable service life of the equipment by reducing the risk of hardware damage caused by overheating.
The line scanning signals and the column scanning signals are coordinated through a synchronous clock, and after the line scanning signals select any line in each line activation period, the column scanning signals activate each column of sub-pixel subareas in sequence according to a preset sequence to form complete line pixel display contents;
Within each row scanning period, the column scanning sequence is from the first column to the first column And after all columns are scanned, switching the row scanning signals to the next row, starting the column scanning signals from the first column again, and repeating until all the rows are scanned completely, thereby obtaining a row-column scanning path.
The image data includes still image files, real-time image data, color space data, and thermal imaging image data, and the video data includes video streams, video frame data, real-time video data, video compression decoding data, and video metadata.
The method for generating corresponding pixel driving data comprises the following steps:
performing color gamut mapping on image data and video data, and defining an initial color gamut to which the image data and the video data belong And the target color gamut to be achieved after optimizationAccording to the actual color distribution characteristics of the image data and the video data, the color value of each pixel point is processed through a group of dynamically-changing color mapping functions to compress or expand the color gamut;
In the mapping process, the color mapping function is based on the color values of the image data and the video data and dynamically adjusted according to the local brightness at the current pixel position point, and is that Wherein, the method comprises the steps of,Representing a color value at a current pixel location point; Representing a color scaling factor, controlling the enlargement or reduction of color values of the image data and the video data, the factor being dynamically adjusted according to the local brightness of the pixel; representing the color shift amount generated according to the brightness difference; Representing the local brightness at the current pixel location point;
for ultra-small pixel pitches, the image details are denser, and the requirements on color accuracy and local contrast are higher, so that the color gamut mapping needs to be dynamically adjusted. And the color scaling and the offset of each pixel are dynamically adjusted according to the local brightness, so that the color of the display content at the ultra-small pixel interval is richer and the detail is more outstanding. Wherein, the method comprises the steps of,Representing a scaling factor associated with the brightness variation, controlling the effect of the brightness variation on the color scaling; Wherein, the method comprises the steps of, Representing an offset coefficient related to the brightness difference, controlling the influence of brightness variation on color offset;
For brightness environment and content change of different display screens, an adaptive gamma correction function is applied, and according to the average brightness change of the local area of the current frame, the gamma correction curve is adaptively adjusted to improve the details of the highlight and dark parts of the display screen, wherein the adaptive gamma correction function is that Wherein, the method comprises the steps of,Representing the adaptively adjusted gamma value; Representing a reference gamma value; The sensitivity coefficient of the gamma adjustment is represented, and the amplitude of the gamma adjustment is controlled by the local brightness change; Representing a preset reference brightness for defining a neutral brightness level, typically located near the middle gray level, i.e. where the human eye perceives neither very dark nor very bright;
however, if the gamma adjustment sensitivity coefficient is too large, the gamma value will be greatly fluctuated when the brightness is slightly changed, and the image is locally over-enhanced or over-dark/over-bright, resulting in color distortion, noise enhancement or 'bright spot' effect. The gamma curve can not match the actual brightness requirement, the current or voltage control of the display screen is inaccurate, the power consumption fluctuation is large, the brightness correction failure is caused, and the problem of exceeding the hardware safety interval is possibly caused;
to solve the above problems, the gamma adjustment sensitivity coefficient is adjusted by introducing a dynamic gamma adjustment formula of Wherein, the method comprises the steps of,Representing a preset maximum gamma adjustment sensitivity coefficient; a maximum value representing the difference between the local luminance of all pixels and the reference luminance;
The dynamic gamma adjustment formula is designed based on the following theories and principles, and the gamma correction is a nonlinear relation between the brightness and the gamma correction, and is used for adjusting the response of the display device to the brightness so as to enable the response to be more in line with the perception characteristics of human eyes. The human eye is nonlinear to the change in luminance, so a smoother luminance map is achieved by the gamma curve. The relationship between the gamma adjustment sensitivity coefficient and the brightness variation is nonlinear. If the gamma adjustment sensitivity coefficient is too large, a slight change in brightness may cause significant color fluctuations, resulting in image brightness imbalance. Therefore, the sensitivity coefficient needs to be dynamically adjusted according to the actual brightness change, and the design avoids the phenomenon of excessive enhancement or excessive darkness/excessive brightness possibly caused by the fixed gamma adjustment sensitivity coefficient. Particularly in a high contrast scene, the variation of brightness can be smoothed by considering the maximum brightness difference, so that the consistent visual effect of each part of the image is ensured.
Compared with the prior art, the method has the beneficial effects that the gamma sensitivity coefficient is dynamically adjusted, and the gamma value is prevented from greatly fluctuating when the brightness is slightly changed, so that color distortion and image overexposure or darkness are prevented. And in a high-contrast scene, the details of the bright part and the dark part are effectively reserved, and overexposure and detail loss are avoided. The smooth gamma response avoids the bright spot effect and noise enhancement caused by small brightness change, and the gamma sensitivity is dynamically adjusted according to the local brightness difference of the image, thereby improving the color accuracy and detail expression of the image.
And quantizing the image data and the video data subjected to dynamic color mapping and adaptive gamma correction into pixel driving instructions required by a display screen to obtain corresponding pixel driving data.
The method for generating the corresponding refresh state data comprises the following steps:
comparing continuous frame image data with video data through an image change detection mechanism, judging whether each pixel unit has brightness value or color value change, and if the pixel change amplitude of any pixel unit exceeds a preset pixel change amplitude threshold value, marking the pixel unit as a pixel unit to be refreshed;
Based on the addressable driving network, addressing the row and column addresses of the pixel units to be refreshed, only carrying out row and column addressing and driving signal loading on the pixel unit areas to be refreshed, and carrying out regional local refreshing;
According to the aggregation degree, density and line span information of the pixel unit area to be refreshed in the space distribution, dynamically adjusting the line scanning path, wherein the line scanning path comprises a jump scanning mode, a discontinuous scanning mode and a multi-section parallel scanning mode, optimizing the refreshing efficiency, recording the line address, refreshing time information and driving load of the pixel unit to be refreshed in each refreshing period, and generating corresponding refreshing state data.
The method for performing adaptive power consumption management comprises the following steps:
Analyzing the brightness, color value, display content change condition and display screen refreshing period of each pixel unit through the generated pixel driving data and refreshing state data to determine the operation state of the display screen, and dynamically adjusting the working parameters of the display screen after the operation state of the display screen is monitored;
according to the change condition of the running state of the display screen, combining real-time pixel driving data and refreshing state data, setting a power consumption regulation mode to carry out self-adaptive power consumption management, wherein the power consumption regulation mode comprises a low power consumption mode, a high efficiency mode and a local regulation mode;
When the display content change rate of the display screen is greater than or equal to the display content change rate threshold of the preset display screen, the system enters a high-efficiency mode;
The local adjustment mode comprises presetting a display content brightness threshold, reducing power consumption by reducing current and voltage of an area with the display content brightness smaller than the preset display content brightness threshold, and increasing power consumption by increasing current and voltage of the area with the display content brightness larger than or equal to the preset display content brightness threshold for self-adaptive power consumption management.
The preset pixel unit spacing threshold value is set by a worker, an average value of a plurality of pixel unit spacing is taken as the preset pixel unit spacing threshold value by collecting different pixel unit spacing, and the preset grid voltage threshold value, the content change amount threshold value of the display screen, the preset pixel change amplitude threshold value and the display content change rate threshold value of the preset display screen are set in the same way.
In this embodiment, by precisely designing the gate length and the source-drain width, the thin film transistor can achieve efficient switching performance. The short gate length can accelerate the switching speed, improve response time and driving efficiency, and simultaneously ensure that the thin film transistor can bear required current without wasting extra power consumption by precisely controlling the width of the source electrode and the drain electrode. The optimized design can not only improve the response speed of the display screen, but also effectively reduce the power consumption and prolong the endurance time of the equipment.
By introducing a dynamic proportionality constant adjusting mechanism, the invention can continuously and stably optimize the power consumption performance under different environments and different use modes, realize the energy efficiency optimization of environment self-adaption and remarkably enlarge the application range of the system. By using the small disturbance linearization method, the higher precision requirement can be achieved in most practical scenes only by dynamically correcting the proportionality constant through a simple linear formula. The method has the advantages of extremely low calculation cost, easy direct realization in the existing hardware, extremely small occupation of system resources, suitability for consumer electronics products with light weight and high real-time requirements, effective reduction of unnecessary energy consumption through more accurate and dynamic power consumption adjustment, remarkable improvement of the equipment endurance time, and prolonged overall reliable service life of the equipment through reduction of the hardware damage risk caused by overheating.
The gamma sensitivity coefficient is dynamically adjusted to avoid the large fluctuation of the gamma value caused by the tiny change of the brightness, thereby preventing color distortion and image overexposure or darkness. And in a high-contrast scene, the details of the bright part and the dark part are effectively reserved, and overexposure and detail loss are avoided. The smooth gamma response avoids the bright spot effect and noise enhancement caused by small brightness change, and the gamma sensitivity is dynamically adjusted according to the local brightness difference of the image, thereby improving the color accuracy and detail expression of the image.
Example two
Referring to fig. 3, this embodiment, which is not described in detail in embodiment 1, provides an active matrix control method for an AM-driven glass-based small-pitch display screen, comprising:
S1, constructing a miniature pixel unit array on a glass substrate, adopting a photoetching and film deposition technology to perform ultra-small pixel space layout, and integrating independent sub-pixel partitions in each pixel unit;
S2, introducing an independent thin film transistor and a storage capacitor on the micro pixel unit array to form an addressable driving network, taking the independent thin film transistor as an active matrix switch unit, taking the storage capacitor as a charge holding unit, independently controlling the voltage and the current of each pixel unit and each independent sub-pixel partition, and constructing a row-column scanning path;
S3, receiving externally input image data and video data, and adopting a dynamic color mapping algorithm and an adaptive gamma correction technology to optimize the color performance of the image data and the video data according to the ultra-small pixel spacing layout so as to generate corresponding pixel driving data;
S4, based on the addressable driving network and the pixel driving data, performing row and column addressing and data refreshing on the pixel unit area which is changed through an image change detection mechanism, dynamically adjusting a row and column scanning path, and generating corresponding refreshing state data;
And S5, based on the pixel driving data and the refreshing state data, monitoring the running state of the display screen in real time and adjusting the running parameters of the display screen, and dynamically adjusting the working current and the voltage of each pixel unit and each independent sub-pixel partition by combining the running state change condition of the display screen to perform self-adaptive power consumption management.
Since the electronic device described in this embodiment is an electronic device used for implementing the AM-driving-based glass-based small-pitch display active-matrix control system in this embodiment, a person skilled in the art can understand a specific implementation manner of the electronic device and various modifications thereof, so that a method for implementing the method in this embodiment of the application will not be described in detail herein. As long as the person skilled in the art implements the electronic device adopted by the active matrix control system of the glass-based small-pitch display screen based on AM driving in the embodiment of the application, the electronic device belongs to the protection scope of the application.
The above formulas are all formulas with dimensionality removed and numerical calculation, the formulas are formulas with the latest real situation obtained by software simulation through collecting a large amount of data, and preset parameters and threshold selection in the formulas are set by those skilled in the art according to the actual situation.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention are intended to be comprehended within the scope of the present invention.
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| US20170289571A1 (en) * | 2016-04-01 | 2017-10-05 | Intel Corporation | Temporal control for spatially adaptive tone mapping of high dynamic range video |
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