CN111126168B - Displays and Electronics - Google Patents

Abstract

The present application provides a display screen and electronic equipment, including: a first display area and a second display area, wherein the first display area includes a plurality of first pixels, and the second display area includes a plurality of second pixels; The display drive circuit displayed by the first pixel; the fingerprint identification drive circuit that drives a plurality of second pixels to emit light when performing fingerprint unlocking; the fingerprint unlocking detection module is used to detect whether the user triggers fingerprint unlocking; the controller is used for fingerprint unlocking When the detection module detects that the user triggers fingerprint unlocking, it controls the fingerprint recognition driving circuit to control the plurality of second pixels to emit light at the same time, or controls the display driving circuit to control a plurality of first pixels to display, and controls the fingerprint recognition driving circuit to control Multiple second pixels emit light simultaneously. As a result, horizontal stripes appear in the collected optical fingerprints, and the quality of fingerprint image generation is improved, thereby improving the accuracy and success rate of fingerprint unlocking.

Description

Displays and Electronics

technical field

The present application relates to the technical field of panel display, in particular to a display screen and electronic equipment.

Background technique

With the development of electronic technology, the display screen of electronic equipment is gradually developing into a full screen, and the screen-to-body ratio is getting higher and higher, so that the current mainstream capacitive fingerprint module has nowhere to be placed, and the optical fingerprint under the screen emerges as the times require.

However, the inventors found that when the fingerprint recognition technology is used for fingerprint recognition under the screen, the imaging is not clear and the quality of the generated fingerprint image is poor, which leads to a low accuracy rate and success rate of fingerprint recognition.

Contents of the invention

The embodiment of the present application proposes a display screen, which is used to solve the phenomenon of unclear imaging and poor quality of the generated fingerprint image in the related art when performing fingerprint recognition through the fingerprint recognition technology under the screen, thereby affecting the accuracy and success rate of fingerprint recognition technical problems.

To this end, the embodiment of the first aspect of the present application proposes a display screen, including: a first display area and a second display area, wherein the first display area includes a plurality of first pixels, and the second display area includes A plurality of second pixels; a display drive circuit for driving the display of the plurality of first pixels; a fingerprint recognition drive circuit for driving the plurality of second pixels to emit light when fingerprint unlocking is performed; a fingerprint unlock detection module for detecting user Whether to trigger fingerprint unlocking; the controller is used to control the fingerprint recognition driving circuit to control the plurality of second pixels to emit light at the same time when the fingerprint unlocking detection module detects that the user triggers fingerprint unlocking, or controls the The display driving circuit controls the plurality of first pixels to display, and controls the fingerprint identification driving circuit to control the plurality of second pixels to emit light simultaneously.

The embodiment of the second aspect of the present application provides an electronic device, including the display screen as described in the embodiment of the first aspect.

The technical solution disclosed in this application has the following beneficial effects:

When the fingerprint is unlocked, multiple pixels included in the fingerprint unlocking area are controlled to emit light at the same time, and multiple pixels included in other areas are controlled to display, avoiding horizontal stripes in the collected optical fingerprints, improving the quality of fingerprint image generation, and further Improve the accuracy and success rate of fingerprint identification.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic structural diagram of a fingerprint identification module in the related art;

2 is a schematic diagram of a fingerprint with horizontal stripes collected by a fingerprint identification module in the related art;

FIG. 3 is a schematic structural diagram of a display screen according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a pixel driving circuit according to an embodiment of the present application;

FIG. 5 is a timing diagram of the operation of a single-pixel display driving circuit in each frame according to an embodiment of the present application;

FIG. 6 is a schematic diagram of the refreshing process of the AMOLED screen display according to an embodiment of the present application;

Fig. 7 is the schematic diagram of the picture brightness change in the AMPLED picture refreshing process of an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a fingerprint identification drive circuit according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a fingerprint identification driving circuit according to another embodiment of the present application;

FIG. 10 is a schematic structural diagram of a fingerprint identification driving circuit according to another embodiment of the present application;

FIG. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

At present, under-screen fingerprint recognition is mainly used in Organic Light-Emitting Diode (OLED) screens. The structure of its fingerprint recognition module is shown in Figure 1. During fingerprint recognition, the OLED screen itself emits light as a light source, and the OLED screen itself emits light. The light emitted by the screen itself is reflected by the finger, and the reflected light passes through the cover to the Complementary Metal-Oxide-Semiconductor (CMOS) sensor of the fingerprint identification module for imaging, so as to perform fingerprint identification through the information of fingerprint imaging .

However, the inventors found that when the fingerprint identification technology is used to identify fingerprints under the screen, there are phenomena such as unclear imaging and poor quality of generated fingerprint images, especially the optical fingerprints collected by the fingerprint identification module are prone to appear as shown in Figure 2. Streak phenomenon, which leads to lower accuracy and success rate of fingerprint identification.

In order to solve the technical problem that the optical fingerprint used for fingerprint recognition under the screen is prone to horizontal stripes in the related art, which leads to the low accuracy and success rate of fingerprint recognition, this application proposes an optical fingerprint recognition module that can avoid fingerprint recognition. The display screen with horizontal stripes in the fingerprint can improve the quality of fingerprint image generation, thereby improving the accuracy and success rate of fingerprint unlocking.

The display screen and the electronic device according to the embodiments of the present application are described below with reference to the accompanying drawings.

The display screen provided by the embodiment of the present application will be specifically described below with reference to FIG. 3 . FIG. 3 is a schematic structural diagram of a display screen according to an embodiment of the present application.

As shown in Figure 3, the display screen 1 of the present application may include:

The first display area 11 and the second display area 12, wherein the first display area 11 includes a plurality of first pixels, and the second display area 12 includes a plurality of second pixels;

A display driving circuit 13 for driving a plurality of first pixels to display;

A fingerprint identification drive circuit 14 that drives a plurality of second pixels to emit light when unlocking the fingerprint;

Fingerprint unlocking detection module 15, used to detect whether the user triggers fingerprint unlocking;

The controller 16 is configured to control the fingerprint recognition driving circuit 14 to control a plurality of second pixels to emit light at the same time when the fingerprint unlocking detection module 15 detects that the user triggers fingerprint unlocking, or to control the display driving circuit 13 to control a plurality of first pixels to display , and control the fingerprint identification drive circuit 14 to control a plurality of second pixels to emit light simultaneously.

Specifically, the display screen provided in the embodiment of this application can be any display screen capable of realizing fingerprint recognition under the screen. This application uses the mainstream active matrix organic light emitting diode panel (Active Matrix/Organic Light Emitting Diode), referred to as AMOLED screen as an example. The display screen provided by the embodiment of the present application may be configured in any electronic device such as a smart phone, a notebook computer, a wearable device, etc., and the present application does not limit this.

Wherein, the second display area 12 is the fingerprint unlocking area in the display screen, and the first display area 11 is other display areas of the display screen except the second display area.

Specifically, the second display area 12 may be located in any area of the display screen, such as the bottom, middle, etc. of the display screen, which is not limited in the present application. The shape of the second display area 12 can be any shape such as circle, ellipse, square, etc., which is not limited in this application. Usually, in order to make the area of the first display area 11 as large as possible, so as to display the picture with the largest possible display area while unlocking the fingerprint, the second display area 12 can be set as a circle closest to the shape of the human fingerprint. . The size of the second display area 12 can be set as required, for example, a certain number of human fingerprint images can be collected, and the largest area of the actual area occupied by the fingerprints can be set as the area size of the second display area 12 . In addition, the number of the second pixels included in the second display area 12 can be set as required, which is not limited in this application.

It can be understood that the full-screen fingerprint unlocking scenarios may include bright-screen unlocking scenarios and off-screen unlocking scenarios.

When the screen is unlocked, after the user triggers fingerprint unlocking, during the fingerprint unlocking process, the first display area 11 is used for displaying, and the second display area 12 is used for fingerprint recognition and unlocking. In the non-fingerprint unlocking process, the first display Both the area 11 and the second display area 12 are used for displaying. That is to say, in the non-fingerprint unlocking process, the second display area 12 has the same effect as other display areas, and is used for displaying, so the display screen is full-screen normal display at this time; in the fingerprint unlocking process, the first display area 11 In normal display, the second display area 12 is used for fingerprint identification and unlocking, so at this time, only the first display area 11 of the display screen normally displays images.

Correspondingly, when the screen is turned on to unlock, the controller 16 can control the display drive circuit 13 to control a plurality of first pixels to display when the fingerprint unlock detection module 15 detects that the user triggers the fingerprint unlock, and controls the fingerprint identification drive circuit 14 to control multiple first pixels to display. The two second pixels emit light at the same time, so that when the first display area 11 is normally displayed, the user can input fingerprints through the second display area 12 . In addition, the display driving circuit 13 can also drive a plurality of second pixels to display, so that the fingerprint unlocking detection module 15 does not detect that the user triggers fingerprint unlocking, or after the fingerprint unlocking is completed, the controller 16 can control the display driving circuit 13 to control a plurality of second pixels. The first pixel and the plurality of second pixels display.

Wherein, it can be considered that within a preset period of time after the user triggers fingerprint unlocking, the fingerprint unlocking is completed, so after the fingerprint unlock detection module 15 detects the preset time period of the user triggering fingerprint unlocking, the controller 16 controls the display drive circuit 13 to control multiple A first pixel and a plurality of second pixels are displayed. Wherein, the preset time period can be set as required, for example, set to 5 seconds, 6 seconds, 7 seconds and so on according to the time required by the user to unlock the fingerprint.

When the screen is unlocked, after the user triggers the fingerprint unlocking process, the first display area 11 is not displayed, and the second display area 12 is used for fingerprint recognition and unlocking.

Correspondingly, when the screen is unlocked, the controller 16, when the fingerprint unlock detection module 15 detects that the user triggers the fingerprint unlock, can control the fingerprint recognition drive circuit 14 to control a plurality of second pixels to emit light at the same time, so that the user Area 11 is not displayed, that is, in the case of an off-screen, the fingerprint is input through the second display area 12 .

In addition, the fingerprint unlocking detection module 15 can detect whether the user triggers fingerprint unlocking in various ways. For example, if an application program with high privacy and security requirements usually requires fingerprint unlocking, the application program can be set to send a fingerprint unlock request to the fingerprint unlock detection module 15 when fingerprint unlock is required, so that the fingerprint unlock detection module 15 can receive the fingerprint unlock request. After the fingerprint receives the request, it is determined that the user triggers fingerprint unlocking.

That is, in an exemplary embodiment, the fingerprint unlock detection module 15 is configured to receive a fingerprint unlock request from an application program, and generate a fingerprint unlock trigger signal according to the fingerprint unlock request.

Alternatively, it may be set that when the user's finger covers the unlocking image displayed in a preset area of the display screen, it is determined that the user triggers fingerprint unlocking. Wherein, the unlock image may be formed by the controller 16 controlling the display driving circuit 13 to control the pixels corresponding to the preset area to display. Correspondingly, the fingerprint unlocking detection module 15 is specifically configured to detect whether the unlocking image is covered, and generate a fingerprint unlocking trigger signal when the unlocking image is covered.

In an exemplary embodiment, the preset area may be an area of a certain preset size in the first display area, and at this time, the controller 16 may control the display driving circuit 13 to control multiple first display images corresponding to the preset area. The pixels are displayed and formed, or the preset area can be an area of a certain preset size in the second display area. At this time, the unlock image can be controlled by the controller 16. Two pixels are used for display formation.

In an exemplary embodiment, the unlock image can be displayed on the second display area 12, that is, the unlock image and the second display area 12 are located in the same area of the display screen, so that the user can trigger the unlock function and perform fingerprinting on the same area of the display screen 1. Unlocking, and then triggering the unlocking function and fingerprint unlocking through one finger covering, without having to change the position to cover the finger for fingerprint recognition after triggering the fingerprint unlocking, thereby increasing the fingerprint unlocking speed and improving the user experience.

After determining that the user triggers fingerprint unlocking, the fingerprint unlocking detection module 15 can generate a fingerprint unlocking trigger signal, and send the fingerprint unlocking trigger signal to the controller 16, so that the controller 16 can drive the display according to the received fingerprint unlocking trigger signal. The circuit 13 and the fingerprint identification driving circuit 14 perform corresponding control to realize the function of unlocking with the screen on or unlocking with the screen off.

In the embodiment of the present application, each first pixel in the first display area 11 and each second pixel in the second display area 12 may respectively correspond to a display driving circuit 13 and a light emitting unit such as an OLED, by using The display driving circuit 13 controls the light-emitting unit corresponding to the corresponding pixel to emit light, so that the corresponding pixel displays, that is, the first display area 11 or the second display area 12 displays.

Wherein, the display driving circuit 13 can be any driving circuit capable of driving the light emitting unit corresponding to the first pixel or the second pixel to emit light, such as the 7T1C circuit shown in FIG. 4 composed of 7 thin film transistors TFT and 1 storage capacitor, Or, a 6T1C circuit composed of 6 TFTs and 1 storage capacitor, or a 5T2C circuit composed of 5 TFTs and 2 storage capacitors, and so on.

Taking the display driving circuit 13 as the 7T1C circuit shown in FIG. 4 as an example, in combination with the control timing diagram of the 7T1C circuit shown in FIG. The process is explained.

In FIG. 4 , M1 , M2 , M3 , M4 , M5 , M6 , and M7 are respectively thin film transistors TFT, Cst is a storage capacitor, and the OLED corresponding to the pixel is connected to the N4 node shown in FIG. 4 . The function of each signal line in Figure 4 and Figure 5 is shown in Table 1 below.

Table 1

The specific process of controlling OLED light emission is divided into three stages: a reset stage, a signal writing stage and a light emitting stage. As shown in Figure 5, in the reset phase, the Vref signal can be written into the N1 and N4 nodes, and the reset signal is negative. In this phase, M5 and M7 are turned on, M1, M2, M4, and M5 are turned off, and the current/voltage flows into N1 through M5 node, flows into the N4 node through M7, and the OLED is turned off; in the signal writing phase, the display control signal Vdata is written into the N1 node. M2, M3, and M4 flow into the N1 node, and the OLED is turned off. When the potential of the N1 node is charged to Vth+|Vdata|, M3 is turned off, thereby realizing threshold compensation, where Tth is the threshold voltage of the TFT; M6 is turned on, M2, M4, M5, and M7 are turned off, the current/voltage flows into the N4 node through M1, M3, and M6, and the OLED emits light. It should be noted that the voltage of the N1 node is finally maintained at Vth+|Vdata|. The purpose of resetting the N1 node in the reset phase is to make the potential of the N1 node the same before each pixel emits light, so as to reduce disturbance. The purpose of resetting the N4 node is to make the anode/cathode potential of the light-emitting unit such as OLED flip, which is beneficial to extend The service life of the lighting unit. In the signal writing phase, the display control signal written into the N1 node determines the luminous brightness.

Through the above process, use the 7T1C circuit shown in FIG. 4 to control the light-emitting unit corresponding to the corresponding pixel to emit light, so that the corresponding first pixel or second pixel displays, that is, the first display area 11 or the second display area 12 is displayed.

It can be understood that, in related technologies, AMOLED screens usually use the above-mentioned 7T1C circuit as a pixel driving circuit, and the above-mentioned 7T1C circuit is used to control the light-emitting unit corresponding to the pixel during fingerprint unlocking and non-fingerprint unlocking.

In addition, the light source emitted by the AMOLED screen is a surface light source. When the AMOLED emits light, it emits light line by line. That is, when the Nth frame is displayed, the entire picture starts from the first line and is refreshed line by line until the last line is displayed. , and then start refreshing the next frame. As shown in Figure 6, for example, "B" is included in the picture to be displayed in the Nth frame, at the moment a when the N-1th frame is displayed, the "A" included in the N-1th frame is completely displayed on the display screen At the moment b when a part of frame N-1 is refreshed, only frame N-1 in the first few lines is refreshed to frame N, and the next few lines still display frame N-1. At time c when the display of the Nth frame is completed, the N-1th frame is completely refreshed into the Nth frame.

By analyzing the refresh process of the screen display of the AMOLED screen and the process of controlling the light emitting unit to emit light by the display drive circuit 13 corresponding to each pixel, it can be known that in one frame, the display of each row is divided into three processes: reset, signal writing and light emission stage. The start is in the reset and signal writing phase. In this phase, the light-emitting unit corresponding to each pixel does not emit light. Therefore, in each frame and each row, there is an action of turning off the light-emitting unit. That is, during the display of a frame, first the light-emitting units corresponding to the first row are turned off for a period of time and then turned on, then the light-emitting units corresponding to the second row are turned off for a period of time and then turned on, until the light-emitting units corresponding to the last row are turned off for a period of time and then turned on. Therefore, the brightness of the AMOLED screen will decrease for a period of time when each frame is first displayed, as shown by the dotted circle in FIG. 7 . Wherein, FIG. 7 is a schematic diagram of brightness changes during the refresh process of the display screen of the AMOLED screen. It can be seen from FIG. 7 that, assuming that the display time of each frame is 16.63 milliseconds (ms), at the initial stage of displaying each frame, the brightness of the image will decrease for a period of time.

Since the 7T1C circuit is used as the pixel driving circuit, the AMOLED screen that controls each pixel for fingerprint unlocking and non-fingerprint unlocking emits light row by row, so the CMOS sensor of the fingerprint recognition module under the screen scans the fingerprint row by row when unlocking the fingerprint. If the brightness of the AMOLED screen decreases during the progressive scanning process, the original signal of the fingerprint imaging in this line will be low, resulting in horizontal stripes in the generated fingerprint image. Moreover, the greater the dimming range of the AMOLED display brightness, the more obvious the horizontal stripes are, and the shorter the scanning time of the CMOS sensor in the fingerprint recognition module, the easier the horizontal stripes will appear.

However, in the display screen proposed by the present application, only the above-mentioned 7T1C circuit is used to control the display of the first pixel and the second pixel when the non-fingerprint is unlocked, and the fingerprint recognition drive circuit 14 is used to control multiple second pixels at the same time It emits light, thereby avoiding the occurrence of horizontal stripes in the optical fingerprint collected by the fingerprint identification module caused by the line-by-line light emission of the AMOLED screen, improving the quality of fingerprint image generation, and thus improving the accuracy and success rate of fingerprint identification.

The fingerprint recognition driving circuit 14 of the present application will be described in detail below.

Specifically, the fingerprint recognition driving circuit 14 includes a plurality of switch tubes, wherein the first terminals of the multiple switch tubes are respectively connected to the anodes of the light-emitting units corresponding to the multiple second pixels, and the control terminals of the multiple switch tubes are connected to the controller respectively. connected, the second ends of the multiple switch tubes are respectively connected to the preset voltage, wherein, when it is detected that the user triggers fingerprint unlocking, the switch tubes are controlled to be closed so that the anodes of the light-emitting units corresponding to the multiple second pixels are connected to the preset voltage .

Wherein, the switching tube may be any device with switching function, such as thin film transistor TFT, transistor and so on. In this application, the switch tube is TFT as an example for illustration. The light-emitting unit may be any light-emitting device, such as a diode, an organic light-emitting diode (OLED), and the like.

It can be understood that among the plurality of switching transistors, each switching transistor corresponds to a second pixel, that is, as shown in FIG. 8 , assuming that the display driving circuit 13 corresponding to each second pixel is a 7T1C circuit, the The fingerprint identification drive circuit 14 is equivalent to adding a switch tube M8 in the display drive circuit 13 corresponding to each second pixel, and the first end of the switch tube M8 is connected to the anode of the light emitting unit corresponding to a second pixel (N4 in FIG. 8 node), the control terminal Switch_HBM of the switch tube M8 is connected to the controller 16 (not shown in FIG. 8 ), and the second terminal HBM_On of the switch tube M8 is connected to a preset voltage. When it is detected that the user triggers fingerprint unlocking, the controller 16 controls the switch tube corresponding to the second pixel to close, so that the anode of the light-emitting unit corresponding to the second pixel is connected to the preset voltage, and the light-emitting unit corresponding to the second pixel can be glow.

Further, as shown in FIGS. 9 and 10, the plurality of second pixels includes a plurality of second R pixels, a plurality of second G pixels, and a plurality of second B pixels, and the plurality of switch transistors corresponding to the second R pixels The second ends of the plurality of switching transistors corresponding to the second G pixel are all connected, the second ends of the plurality of switching transistors corresponding to the second B pixel are all connected, and the plurality of second R pixels, the plurality of The second G pixel and the control terminals of the plurality of switch transistors corresponding to the plurality of second B pixels are connected to each other.

Specifically, since the control terminals of the switch tubes corresponding to the multiple second pixels included in the second display area 12 are all connected together, the controller 16 can control the switch tubes corresponding to the multiple second pixels when the user triggers fingerprint unlocking. Simultaneously closed, so that the light emitting units corresponding to a plurality of second pixels emit light at the same time, thus avoiding horizontal stripes in the optical fingerprint caused by the pixels of the display screen 1 emitting light row by row.

It can be understood that the control process of the fingerprint identification driving circuit 14 is completely independent of the timing of the display driving circuit 13, and the fingerprint unlocking detection module 15 does not detect that the user triggers the fingerprint unlocking, or the fingerprint unlocking detection module 15 detects that the user triggers the fingerprint unlocking. After a preset period of time, a plurality of switch tubes in the fingerprint identification driving circuit 14 are disconnected, so when the fingerprint is not unlocked, the second display area 12 displays under the control of the display driving circuit 13. At this time, the first display The display process and principle of the area 11 and the second display area 12 are the same.

It should be noted that the voltage levels of the preset voltages respectively connected to the second terminals of the plurality of switching transistors respectively corresponding to the plurality of second R pixels, the plurality of second G pixels and the plurality of second B pixels may be the same, or It can be different, and this application does not limit it. By setting the voltage levels of the preset voltages connected to the second terminals of the switching tubes corresponding to the pixels of different colors to be different, the luminances of the pixels of different colors can be set respectively. In addition, the signal quantity at the control terminal of the switch tube causes the light emitting unit to emit light, and the brightness of the light emitting unit also depends on the signal quantity at the control terminal.

In addition, as shown in FIG. 10 , the control terminals of multiple switch tubes and the second terminals of multiple switch tubes can be directly connected to the controller 16 through the main flexible circuit board without passing through the display drive circuit 13. When fingerprint unlocking is triggered, the light emitting units corresponding to the plurality of second pixels are controlled to emit light simultaneously.

It can be understood that during the normal display and use of the display screen, the 7T1C pixel drive circuit with threshold (Tth) compensation function can compensate the non-uniformity of the threshold value in the display screen and improve the uniformity of the display screen, especially in low brightness brightness uniformity. Therefore, in the embodiment of the present application, the display driving circuit 13 can be realized by using a 7T1C circuit, so as to avoid horizontal stripes in the collected optical fingerprints and at the same time take into account the uniformity of low gray scale brightness.

In order to realize the foregoing embodiments, the present application further proposes an electronic device. FIG. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device shown in FIG. 11 is only an example, and should not limit the functions and scope of use of this embodiment of the present application.

As shown in FIG. 11 , the above-mentioned electronic device 200 includes the display screen 1 described in the above-mentioned embodiment.

Wherein, the electronic device may be any electronic device such as a smart phone, a notebook computer, or a wearable device, which is not limited in this application. FIG. 11 is illustrated by taking the electronic device as a smart phone as an example.

In an optional implementation form, as shown in FIG. 11 and FIG. 12, the electronic device 200 may further include: a memory 210 and a processor 220, a bus 230 connecting different components (including the memory 210 and the processor 220), The memory 210 stores computer programs, various types of data, etc., and the processor 220 is used to implement various data processing, and execute the programs to realize certain functions.

Bus 230 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures. These architectures include, by way of example, but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect ( PCI) bus.

Electronic device 200 typically includes a variety of computer device readable media. These media can be any available media that can be accessed by electronic device 200 and include both volatile and nonvolatile media, removable and non-removable media.

Memory 210 may also include computer system readable media in the form of volatile memory, such as random access memory (RAM) 240 and/or cache memory 250 . The electronic device 200 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 260 may be used to read and write to non-removable, non-volatile magnetic media (not shown in FIG. 12, commonly referred to as a "hard drive"). Although not shown in FIG. 12, a disk drive for reading and writing to a removable non-volatile disk (such as a "floppy disk") may be provided, as well as a removable non-volatile disk (such as a CD-ROM, DVD-ROM). or other optical media) CD-ROM drive. In these cases, each drive may be connected to bus 230 through one or more data media interfaces. The memory 210 may include at least one program product having a set (for example, at least one) of program modules configured to execute the functions of the various embodiments of the present application.

Program/utility 280 having a set (at least one) of program modules 270, such as may be stored in memory 210, such program modules 270 including - but not limited to - an operating system, one or more application programs, other program Modules and program data, each or some combination of these examples may include the implementation of the network environment. The program module 270 generally executes the functions and/or methods in the embodiments described in this application.

The electronic device 200 can also communicate with one or more external devices 290 (such as keyboards, pointing devices, displays 291, etc.), and can also communicate with one or more devices that enable the user to interact with the electronic device 200, and/or communicate with Any device (eg, network card, modem, etc.) that enables the electronic device 200 to communicate with one or more other computing devices. Such communication may occur through input/output (I/O) interface 292 . Moreover, the electronic device 200 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and/or a public network such as the Internet) through the network adapter 293 . As shown in FIG. 12 , the network adapter 293 communicates with other modules of the electronic device 200 through the bus 230 . It should be appreciated that although not shown in FIG. 12 , other hardware and/or software modules may be used in conjunction with electronic device 200, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape Drives and data backup storage systems, etc.

It should be noted that, for the implementation process and technical principle of the electronic device in this embodiment, refer to the above-mentioned explanation of the display screen, which will not be repeated here.

The display screen included in the electronic device provided by the embodiment of the present application controls multiple pixels included in the fingerprint unlocking area to emit light at the same time and controls multiple pixels included in other areas to display when the fingerprint is unlocked, thereby avoiding the loss of the optical fingerprint collected. The appearance of horizontal stripes improves the quality of fingerprint image generation, thereby improving the accuracy and success rate of fingerprint identification.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent modules, segments or portions of code comprising one or more executable instructions for implementing specific logical functions or steps of the process , and the scope of preferred embodiments of the present application includes additional implementations in which functions may be performed out of the order shown or discussed, including in substantially simultaneous fashion or in reverse order depending on the functions involved, which shall It should be understood by those skilled in the art to which the embodiments of the present application belong.

It should be understood that each part of the present application may be realized by hardware, software, firmware or a combination thereof. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques known in the art: Discrete logic circuits, ASICs with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

Those of ordinary skill in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. During execution, one or a combination of the steps of the method embodiments is included.

The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (7)

1. A display screen, comprising:

a first display region and a second display region, wherein the first display region includes a plurality of first pixels and the second display region includes a plurality of second pixels;

a display driving circuit that drives the plurality of first pixel displays;

a fingerprint identification driving circuit for driving the plurality of second pixels to emit light when fingerprint unlocking is performed;

the fingerprint unlocking detection module is used for detecting whether a user triggers fingerprint unlocking or not;

the controller is used for controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously or controlling the display driving circuit to control the first pixels to display and controlling the fingerprint identification driving circuit to control the second pixels to emit light simultaneously when the fingerprint unlocking detection module detects that the user triggers fingerprint unlocking;

the fingerprint identification driving circuit includes:

the first ends of the switch tubes are respectively connected with anodes of the light-emitting units corresponding to the second pixels, the control ends of the switch tubes are respectively connected with the controller, the second ends of the switch tubes are respectively connected with preset voltage, and when the user trigger fingerprint unlocking is detected, the switch tubes are controlled to be closed so that the anodes of the light-emitting units corresponding to the second pixels are connected with the preset voltage;

the plurality of second pixels comprise a plurality of second R pixels, a plurality of second G pixels and a plurality of second B pixels, wherein the second ends of the plurality of switching tubes corresponding to the second R pixels are connected, the second ends of the plurality of switching tubes corresponding to the second G pixels are connected, and the second ends of the plurality of switching tubes corresponding to the second B pixels are connected;

and the control ends of the switch tubes corresponding to the second R pixels, the second G pixels and the second B pixels are connected.

2. The display screen of claim 1, wherein voltage levels of preset voltages respectively connected to second ends of a plurality of switching tubes respectively corresponding to the plurality of second R pixels, the plurality of second G pixels, and the plurality of second B pixels are different.

3. The display screen of claim 1, wherein the controller is further configured to control the display driving circuit to control the pixels corresponding to the preset area to display, so as to form an unlock image.

4. The display screen of claim 3, wherein the fingerprint unlocking detection module is specifically configured to:

detecting whether the unlocking image is covered or not, and generating a fingerprint unlocking trigger signal when the unlocking image is covered.

5. The display screen of claim 4, wherein the unlock image is located in a same area of the display screen as the second display area.

6. The display screen of claim 4, wherein the controller is further configured to control the display driving circuit to control the plurality of first pixels and the plurality of second pixels to display when the fingerprint unlock detection module does not detect the user to trigger the fingerprint unlock or after detecting the user to trigger a preset period of time of the fingerprint unlock.

7. An electronic device comprising a display screen as claimed in any one of claims 1-6.