Display screen and electronic device

Abstract

The application provides a display screen and an electronic device, comprising: a first display area and a second display area, wherein the first display area comprises a plurality of first pixels, and the second display area comprises a plurality of second pixels; a display driving circuit for driving the plurality of first pixels to display; a fingerprint identification driving circuit for driving the plurality of second pixels to emit light when performing fingerprint unlocking; a fingerprint unlocking detection module for detecting whether a user triggers fingerprint unlocking; and a controller for controlling the fingerprint identification driving circuit to control the plurality of second pixels to emit light at the same time, or controlling the display driving circuit to control the plurality of first pixels to display and controlling the fingerprint identification 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. Thus, horizontal lines in the collected optical fingerprint are avoided, the generation quality of the fingerprint image is improved, and the accuracy and success rate of fingerprint unlocking are improved.

Description

[0001] This application is a divisional application of China, filed on December 3, 2019, with application number 201911220024.7, entitled "Display screen and electronic device". Technical Field

[0002] This application relates to the field of panel display technology, and in particular to a display screen and electronic device. Background Technology

[0003] With the development of electronic technology, the displays of electronic devices are gradually moving towards full-screen designs. The increasingly higher screen-to-body ratio has made it impossible to place the currently mainstream capacitive fingerprint modules, leading to the emergence of under-display optical fingerprint technology.

[0004] However, the inventors discovered that when using under-display fingerprint recognition technology, there are issues with unclear imaging and poor quality of the generated fingerprint images, which leads to low accuracy and success rate of fingerprint recognition. Summary of the Invention

[0005] This application proposes a display screen to solve the technical problem in related technologies where fingerprint recognition using under-display fingerprint recognition technology results in unclear imaging and poor quality of the generated fingerprint images, thereby affecting the accuracy and success rate of fingerprint recognition.

[0006] Therefore, a first aspect of this application provides a display screen, comprising: 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 driving circuit for driving the plurality of first pixels to display; a fingerprint recognition driving circuit for driving the plurality of second pixels to emit light during fingerprint unlocking; a fingerprint unlocking detection module for detecting whether a user triggers fingerprint unlocking; and a controller for controlling the fingerprint recognition driving circuit to control the plurality of second pixels to emit light simultaneously, or controlling the display driving circuit to control the plurality of first pixels to display, and controlling the fingerprint recognition driving circuit to control the plurality of second pixels to emit light simultaneously, when the fingerprint unlocking detection module detects that the user has triggered fingerprint unlocking.

[0007] A second aspect of this application provides an electronic device including a display screen as described in the first aspect embodiment.

[0008] The technical solution disclosed in this application has the following beneficial effects:

[0009] By controlling multiple pixels in the fingerprint unlocking area to emit light simultaneously and controlling multiple pixels in other areas to display during fingerprint unlocking, horizontal lines are avoided in the collected optical fingerprint, improving the quality of the generated fingerprint image and thus increasing the accuracy and success rate of fingerprint recognition. Attached Figure Description

[0010] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0011] Figure 1 This is a schematic diagram of the structure of a fingerprint recognition module in related technologies;

[0012] Figure 2 A schematic diagram of a fingerprint with horizontal stripes collected by a fingerprint recognition module in related technologies;

[0013] Figure 3 This is a schematic diagram of the structure of a display screen according to an embodiment of this application;

[0014] Figure 4 This is a schematic diagram of a pixel driving circuit according to an embodiment of this application;

[0015] Figure 5 This is a timing diagram showing the operation of a single-pixel display driving circuit in each frame according to an embodiment of this application;

[0016] Figure 6 This is a schematic diagram illustrating the refresh process of an AMOLED screen display according to an embodiment of this application;

[0017] Figure 7 This is a schematic diagram illustrating the brightness change during the refresh process of an AMPLED screen according to an embodiment of this application.

[0018] Figure 8 This is a schematic diagram of the structure of a fingerprint recognition driving circuit according to an embodiment of this application;

[0019] Figure 9 This is a schematic diagram of the fingerprint recognition driving circuit according to another embodiment of this application;

[0020] Figure 10 This is a schematic diagram of the fingerprint recognition driving circuit according to another embodiment of this application;

[0021] Figure 11 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application;

[0022] Figure 12 This is a schematic diagram of the structure of an electronic device according to another embodiment of this application. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying 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 with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0024] Currently, under-display fingerprint recognition is mainly used in organic light-emitting diode (OLED) screens, and the structure of its fingerprint recognition module is as follows: Figure 1 As shown, during fingerprint recognition, the OLED screen itself emits light as a light source. The light emitted by the OLED screen is reflected by the finger, and the reflected light passes through the cover plate to form an image in the complementary metal-oxide-semiconductor (CMOS) sensor of the fingerprint recognition module. Fingerprint recognition is then performed using the information from the fingerprint image.

[0025] However, the inventors discovered that fingerprint recognition using under-display fingerprint technology suffers from unclear imaging and poor quality fingerprint images, particularly with optical fingerprints captured by the fingerprint recognition module. Figure 2 The horizontal stripe phenomenon shown leads to a lower accuracy and success rate in fingerprint recognition.

[0026] In order to solve the technical problem that optical fingerprints used for under-display fingerprint recognition are prone to horizontal lines, resulting in low accuracy and success rate of fingerprint recognition, this application proposes a display screen that can avoid horizontal lines in the optical fingerprints collected by the fingerprint recognition module, thereby improving the quality of fingerprint image generation and thus improving the accuracy and success rate of fingerprint unlocking.

[0027] The display screen and electronic device according to embodiments of this application are described below with reference to the accompanying drawings.

[0028] The following is combined with Figure 3 The display screen provided in the embodiments of this application will be described in detail below. Figure 3 This is a schematic diagram of the structure of a display screen according to an embodiment of this application.

[0029] like Figure 3 As shown, the display screen 1 of this application may include:

[0030] A first display area 11 and a 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;

[0031] Display driving circuit 13 that drives the display of multiple first pixels;

[0032] A fingerprint recognition driver circuit 14 that drives multiple second pixels to emit light during fingerprint unlocking;

[0033] The fingerprint unlock detection module 15 is used to detect whether the user has triggered fingerprint unlock;

[0034] The controller 16 is used to control the fingerprint recognition driving circuit 14 to control multiple second pixels to emit light simultaneously when the fingerprint unlock detection module 15 detects that the user has triggered fingerprint unlocking, or to control the display driving circuit 13 to control multiple first pixels to display, and to control the fingerprint recognition driving circuit 14 to control multiple second pixels to emit light simultaneously.

[0035] Specifically, the display screen provided in this application embodiment can be any display screen capable of under-display fingerprint recognition. This application takes the mainstream Active Matrix Organic Light Emitting Diode (AMOLED) panel as an example for illustration. The display screen provided in this application embodiment can be configured in any electronic device such as smartphones, laptops, and wearable devices, and this application does not impose any limitations on this.

[0036] The second display area 12 is the fingerprint unlocking area on the display screen, and the first display area 11 is the other display areas on the display screen besides the second display area.

[0037] Specifically, the second display area 12 can be located in any area of ​​the display screen, such as the bottom, center, etc., and this application does not impose any restrictions on this. The shape of the second display area 12 can be any shape, such as a circle, ellipse, or square, and this application does not impose any restrictions on this. Generally, in order to make the area of ​​the first display area 11 as large as possible, so as to display the image with the largest possible display area while unlocking with fingerprints, the second display area 12 can be set to a circle that is closest to the shape of a human fingerprint. The size of the second display area 12 can be set as needed. For example, a certain number of human fingerprint images can be collected, and the largest area occupied by the fingerprints can be set as the area of ​​the second display area 12. In addition, the number of second pixels included in the second display area 12 can be set as needed, and this application does not impose any restrictions on this.

[0038] It is understandable that full-screen fingerprint unlocking can be used in both screen-on and screen-off scenarios.

[0039] When the screen is on and the user triggers fingerprint unlock, during the fingerprint unlock process, the first display area 11 is used for display, and the second display area 12 is used for fingerprint recognition unlock. During non-fingerprint unlock, both the first display area 11 and the second display area 12 are used for display. That is, during non-fingerprint unlock, the second display area 12 serves the same function as the other display areas, and is used for display; therefore, the display screen is in full-screen mode. During fingerprint unlock, the first display area 11 displays normally, and the second display area 12 is used for fingerprint recognition unlock; therefore, only the first display area 11 displays the image normally.

[0040] Correspondingly, during screen unlocking, when the fingerprint unlock detection module 15 detects that the user has triggered fingerprint unlocking, the controller 16 can control the display driving circuit 13 to control multiple first pixels to display, and control the fingerprint recognition driving circuit 14 to control multiple second pixels to emit light simultaneously, so that when the first display area 11 is normally displayed, the user can input their fingerprint through the second display area 12. Additionally, the display driving circuit 13 can also drive multiple second pixels to display, so that when the fingerprint unlock detection module 15 does not detect that the user has triggered fingerprint unlocking, or when fingerprint unlocking is completed, the controller 16 can control the display driving circuit 13 to control multiple first pixels and multiple second pixels to display.

[0041] Specifically, the fingerprint unlocking process can be considered to be completed within a preset time period after the user triggers the fingerprint unlocking. Therefore, after the fingerprint unlocking detection module 15 detects the preset time period triggered by the user's fingerprint unlocking, the controller 16 controls the display driving circuit 13 to control multiple first pixels and multiple second pixels for display. The preset time period can be set as needed, for example, to 5 seconds, 6 seconds, 7 seconds, etc., depending on the time required for the user to unlock their fingerprint.

[0042] When the screen is off and the user triggers fingerprint unlock, the first display area 11 is not displayed during the fingerprint unlocking process, and the second display area 12 is used for fingerprint recognition unlocking.

[0043] Correspondingly, when unlocking from a screen-off state, the controller 16 can control the fingerprint recognition driving circuit 14 to control multiple second pixels to emit light simultaneously when the fingerprint unlock detection module 15 detects that the user has triggered fingerprint unlocking, so that the user can input fingerprints through the second display area 12 when the first display area 11 is not displayed, i.e., when the screen is off.

[0044] In addition, the fingerprint unlock detection module 15 can detect whether a user has triggered fingerprint unlocking in various ways. For example, applications with high privacy and security requirements often require fingerprint unlocking. In such cases, the application can be configured to send a fingerprint unlocking request to the fingerprint unlock detection module 15 when fingerprint unlocking is required. Thus, the fingerprint unlock detection module 15 can determine that the user has triggered fingerprint unlocking upon receiving the fingerprint reception request.

[0045] That is, in the exemplary embodiment, the fingerprint unlock detection module 15 is used to receive the fingerprint unlock request from the application and generate a fingerprint unlock trigger signal according to the fingerprint unlock request.

[0046] Alternatively, the system can be configured to trigger fingerprint unlocking when a user's finger covers a preset area of ​​the display screen containing the unlock image. The unlock image can be formed by the controller 16 controlling the display driver circuit 13 to display pixels corresponding to the preset area. Accordingly, the fingerprint unlocking detection module 15 is specifically used to detect whether the unlock image is covered; when the unlock image is covered, a fingerprint unlocking trigger signal is generated.

[0047] In an exemplary embodiment, the preset area can be a region of a preset size in the first display area. In this case, the unlocking image can be formed by the controller 16 controlling the display driving circuit 13 to control the multiple first pixels corresponding to the preset area. Alternatively, the preset area can be a region of a preset size in the second display area. In this case, the unlocking image can be formed by the controller 16 controlling the display driving circuit 13 to control the multiple second pixels corresponding to the preset area.

[0048] In an exemplary embodiment, the unlock image can be displayed in 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 fingerprint unlocking in the same area of ​​the display screen 1. Thus, the unlock function can be triggered and fingerprint unlocking can be performed with a single finger cover, without having to change the position of the finger cover for fingerprint recognition after triggering fingerprint unlocking, thereby improving the fingerprint unlocking speed and improving the user experience.

[0049] After confirming that the user has triggered fingerprint unlocking, the fingerprint unlocking detection module 15 generates a fingerprint unlocking trigger signal and sends the fingerprint unlocking trigger signal to the controller 16. The controller 16 can then control the display driving circuit 13 and the fingerprint recognition driving circuit 14 according to the received fingerprint unlocking trigger signal to realize the screen-on unlocking or screen-off unlocking functions.

[0050] In this embodiment, each first pixel in the first display area 11 and each second pixel in the second display area 12 can correspond to a display driving circuit 13 and a light-emitting unit such as an OLED. By using the display driving circuit 13 to control the light-emitting unit corresponding to the pixel to emit light, the corresponding pixel can be displayed, thus enabling the first display area 11 or the second display area 12 to be displayed.

[0051] 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... Figure 4 The circuit shown is a 7T1C circuit consisting of 7 thin-film transistors (TFTs) and 1 storage capacitor, or a 6T1C circuit consisting of 6 thin-film transistors (TFTs) and 1 storage capacitor, or a 5T2C circuit consisting of 5 thin-film transistors (TFTs) and 2 storage capacitors, etc.

[0052] The following uses display driver circuit 13 as an example. Figure 4 Taking the 7T1C circuit shown as an example, combined with Figure 5 The control timing diagram of the 7T1C circuit shown illustrates the process by which the display driver circuit 13, provided in this embodiment, drives the display of the first pixel or the second pixel.

[0053] Figure 4 In the diagram, M1, M2, M3, M4, M5, M6, and M7 are thin-film transistors (TFTs), Cst is the storage capacitor, and the corresponding OLED pixels are... Figure 4 The N4 nodes shown are connected. Figure 4 and Figure 5 The functions of each signal line are shown in Table 1 below.

[0054] Table 1

[0055]

[0056]

[0057] The specific process of controlling OLED light emission is divided into three stages: the reset stage, the signal writing stage, and the light emission stage. For example... Figure 5As shown, during the reset phase, the Vref signal can be written to nodes N1 and N4. The reset signal is negative. During this phase, M5 and M7 are turned on, while M1, M2, M4, and M5 are turned off. Current / voltage flows into node N1 through M5 and into node N4 through M7, turning off the OLED. During the signal writing phase, the display control signal Vdata is written to node N1. During this phase, M2, M3, and M4 are turned on, while M1, M5, M6, and M7 are turned off. Current / voltage flows into node N1 through M2, M3, and M4, turning off the OLED. This continues until the potential of node N1 is charged to Vth + |Vdata|, at which point M3 is turned off, thus achieving threshold compensation. Here, Tth is the threshold voltage of the TFT. During the light emission phase, M1, M3, and M6 are turned on, while M2, M4, M5, and M7 are turned off. Current / voltage flows into node N4 through M1, M3, and M6, causing the OLED to emit light. It should be noted that the voltage of node N1 is ultimately maintained at Vth + |Vdata|. The purpose of resetting node N1 during the reset phase is to ensure that the potential of node N1 is the same before each pixel emits light, thereby reducing disturbances. The purpose of resetting node N4 is to flip the anode / cathode potential of the light-emitting unit, such as an OLED, which helps to extend the lifespan of the light-emitting unit. During the signal writing phase, the display control signal written to node N1 determines the light emission brightness.

[0058] Through the above process, utilizing Figure 4 The 7T1C circuit shown controls the light-emitting unit corresponding to the corresponding pixel to emit light, so that the corresponding first pixel or second pixel is displayed, thus enabling the first display area 11 or the second display area 12 to be displayed.

[0059] It is understandable that in related technologies, AMOLED screens typically use the aforementioned 7T1C circuit as the pixel driving circuit. Both fingerprint unlocking and non-fingerprint unlocking utilize the aforementioned 7T1C circuit to control the light-emitting unit corresponding to the pixel.

[0060] Furthermore, AMOLED screens emit surface light sources, meaning they light up line by line. When displaying the Nth frame, the entire image is refreshed line by line, starting from the first line, until the last line is displayed before starting the next frame. For example... Figure 6 As shown, for example, if the image to be displayed in frame N includes "B", at time a after frame N-1 is finished displaying, the "A" included in frame N-1 is fully displayed on the screen. At time b after frame N-1 is partially refreshed, only the first few rows of frame N-1 are refreshed to frame N, while the last few rows are still displaying frame N-1. Only at time c after frame N is finished displaying is frame N-1 fully refreshed to frame N.

[0061] By analyzing the refresh process of the AMOLED screen display and the process of the display driver circuit 13 controlling the light-emitting unit to emit light for each pixel, it can be seen that the display of each row in one frame consists of three processes: reset, signal writing, and light emission. Starting in the reset and signal writing stages, the light-emitting units corresponding to each pixel do not emit light. Therefore, at the beginning of each row in each frame, there is an action where the light-emitting units are turned off. That is, during the display of one frame, 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 at the beginning of each frame display, such as... Figure 7 As shown by the dashed circle in the middle. Wherein, Figure 7 This is a diagram illustrating the brightness changes during the refresh process of an AMOLED screen. Figure 7 As can be seen, assuming each frame is displayed for 16.63 milliseconds (ms), the brightness of the image will decrease for a period of time at the beginning of each frame display.

[0062] Because the AMOLED screen uses a 7T1C circuit as the pixel driving circuit, controlling the illumination of each pixel during fingerprint unlocking and non-fingerprint unlocking, the CMOS sensor of the under-display fingerprint recognition module scans the fingerprint line by line during fingerprint unlocking. If the AMOLED screen brightness decreases during the line-by-line scanning process, the original signal for that line of the fingerprint image will be lower, resulting in horizontal lines appearing in the generated fingerprint image. Furthermore, the greater the decrease in AMOLED screen brightness, the more obvious the horizontal lines; and the shorter the scanning time of the CMOS sensor in the fingerprint recognition module, the easier it is for horizontal lines to appear.

[0063] In the display proposed in this application, the first and second pixels are controlled to be displayed only when the fingerprint is not unlocked, for example, by the 7T1C circuit mentioned above. When the fingerprint is unlocked, the fingerprint recognition driving circuit 14 is used to control multiple second pixels to emit light simultaneously, thereby avoiding horizontal lines in the optical fingerprint collected by the fingerprint recognition module due to the AMOLED screen emitting light line by line, improving the quality of fingerprint image generation, and thus improving the accuracy and success rate of fingerprint recognition.

[0064] The fingerprint recognition driver circuit 14 of this application will be described in detail below.

[0065] Specifically, the fingerprint recognition driving circuit 14 includes multiple switching transistors, wherein the first terminals of the multiple switching transistors are respectively connected to the anodes of the light-emitting units corresponding to the multiple second pixels, the control terminals of the multiple switching transistors are respectively connected to the controller, and the second terminals of the multiple switching transistors are respectively connected to a preset voltage. When a user triggers fingerprint unlocking, the control switching transistors are closed so that the anodes of the light-emitting units corresponding to the multiple second pixels are connected to the preset voltage.

[0066] The switching transistor can be any device with switching function, such as a thin-film transistor (TFT), a bipolar junction transistor (BJT), etc. This application uses a TFT as an example for illustration. The light-emitting unit can be any light-emitting device, such as a diode, an organic light-emitting diode (OLED), etc.

[0067] It is understandable that in a plurality of switching transistors, each switching transistor corresponds to a second pixel, i.e., as shown below. Figure 8 As shown, assuming that the display driving circuit 13 corresponding to each second pixel is a 7T1C circuit, the fingerprint recognition driving circuit 14 provided in this embodiment is equivalent to adding a switching transistor M8 to the display driving circuit 13 corresponding to each second pixel. The first terminal of the switching transistor M8 is connected to the anode of the light-emitting unit corresponding to a second pixel. Figure 8 The N4 node is connected, and the control terminal Switch_HBM of the switch transistor M8 is connected to the controller 16. Figure 8 (Not shown in the image), the second terminal HBM_On of the switching transistor M8 is connected to a preset voltage. When a user triggers fingerprint unlocking, the controller 16 controls the switching transistor 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 emit light.

[0068] Furthermore, such as Figure 9 and 10 As shown, the multiple second pixels include multiple second R pixels, multiple second G pixels, and multiple second B pixels. The second ends of the multiple switching transistors corresponding to the second R pixels are all connected, the second ends of the multiple switching transistors corresponding to the second G pixels are all connected, the second ends of the multiple switching transistors corresponding to the second B pixels are all connected, and the control ends of the multiple switching transistors corresponding to the multiple second R pixels, multiple second G pixels, and multiple second B pixels are all connected.

[0069] Specifically, since the control terminals of the multiple switching transistors corresponding to the second pixels included in the second display area 12 are all connected together, the controller 16 can control the multiple switching transistors corresponding to the second pixels to close simultaneously when the user triggers fingerprint unlocking, so that the light-emitting units corresponding to the multiple second pixels emit light simultaneously, thus avoiding horizontal lines in the optical fingerprint caused by the pixels of the display screen 1 emitting light line by line.

[0070] It is understandable that the control process of the fingerprint recognition driving circuit 14 is completely independent of the timing of the display driving circuit 13. When the fingerprint unlock detection module 15 does not detect the user triggering fingerprint unlock, or after the fingerprint unlock detection module 15 detects the user triggering fingerprint unlock for a preset time period, multiple switches in the fingerprint recognition driving circuit 14 are turned off. Therefore, when not unlocking with a fingerprint, the second display area 12 is displayed under the control of the display driving circuit 13. At this time, the display process and principle of the first display area 11 and the second display area 12 are the same.

[0071] It should be noted that the preset voltage levels connected to the second terminals of the multiple switching transistors corresponding to the multiple second R pixels, multiple second G pixels, and multiple second B pixels can be the same or different, and this application does not impose any restrictions on this. By setting different preset voltage levels connected to the second terminals of the switching transistors corresponding to pixels of different colors, the luminous intensity of pixels of different colors can be set separately. In addition, the signal at the control terminal of the switching transistor causes the light-emitting unit to emit light, and the luminous intensity of the light-emitting unit also depends on the signal at the control terminal.

[0072] In addition, such as Figure 10 As shown, the control terminals and second terminals of multiple switching transistors can be directly connected to the controller 16 via the main flexible circuit board without going through the display driver circuit 13. When the user triggers fingerprint unlocking, the controller 16 controls the light-emitting units corresponding to multiple second pixels to emit light simultaneously.

[0073] It is understandable that during normal display and use, the 7T1C pixel driving circuit with threshold (Tth) compensation function can compensate for the non-uniformity of the threshold within the display screen, improving the uniformity of the displayed image, especially the brightness uniformity at low brightness levels. Therefore, in this embodiment, the display driving circuit 13 can be implemented using a 7T1C circuit, thereby avoiding horizontal lines in the collected optical fingerprint while ensuring the uniformity of low grayscale brightness.

[0074] To implement the above embodiments, this application also proposes an electronic device. Figure 11 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Figure 11 The electronic device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0075] like Figure 11 As shown, the above-mentioned electronic device 200 includes the display screen 1 described in the above embodiment.

[0076] The electronic device can be any electronic device such as a smartphone, laptop, or wearable device; this application does not impose any restrictions on this. Figure 11The following is an illustration using a smartphone as an example.

[0077] In one alternative implementation, such as Figure 11 and Figure 12 As shown, 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 storing computer programs, various types of data, etc., and the processor 220 used to perform various data processing and execute the program to achieve a certain function.

[0078] Bus 230 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. Examples of these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0079] Electronic device 200 typically includes a variety of computer-readable media. These media can be any available media that can be accessed by electronic device 200, including volatile and non-volatile media, removable and non-removable media.

[0080] 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. Electronic device 200 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 260 may be used to read and write non-removable, non-volatile magnetic media (… Figure 12 Not shown; usually referred to as a "hard drive"). Although Figure 12 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 230 via one or more data media interfaces. Memory 210 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of this application.

[0081] A program / utility 280 having a set (at least one) of program modules 270 may be stored in, for example, memory 210. Such program modules 270 include—but are 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 an implementation of a network environment. Program modules 270 typically perform the functions and / or methods described in the embodiments of this application.

[0082] Electronic device 200 can also communicate with one or more external devices 290 (e.g., keyboard, pointing device, display 291, etc.), and with one or more devices that enable a user to interact with the electronic device 200, and / or with any device that enables the electronic device 200 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 292. Furthermore, electronic device 200 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 293. Figure 12 As shown, network adapter 293 communicates with other modules of electronic device 200 via bus 230. It should be understood that, although... Figure 12 As not shown, 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.

[0083] It should be noted that the implementation process and technical principles of the electronic device in this embodiment are explained in the foregoing description of the display screen, and will not be repeated here.

[0084] The electronic device provided in this application includes a display screen that, during fingerprint unlocking, controls multiple pixels in the fingerprint unlocking area to emit light simultaneously and controls multiple pixels in other areas to display, thereby avoiding horizontal lines in the collected optical fingerprint, improving the quality of fingerprint image generation, and thus improving the accuracy and success rate of fingerprint recognition.

[0085] In the description of this specification, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of this application.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0087] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0088] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using 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 using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0089] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0090] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A display screen, characterized in that, include: 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 second display area is the fingerprint unlocking area in the display screen, and the first display area is the other display areas of the display screen besides the second display area; A display driving circuit for driving the plurality of first pixels to be displayed; the display driving circuit is used to drive the plurality of first pixels to be displayed line by line. A fingerprint recognition driving circuit that drives the plurality of second pixels to emit light during fingerprint unlocking; the fingerprint recognition driving circuit is used to control the plurality of second pixels to emit light simultaneously during fingerprint unlocking, and the control of the fingerprint recognition driving circuit is independent of the control of the display driving circuit; The fingerprint unlock detection module is used to detect whether the user has triggered fingerprint unlock; The controller is configured to, when the fingerprint unlock detection module detects that the user has triggered fingerprint unlocking, control the fingerprint recognition driving circuit to control the plurality of second pixels to emit light simultaneously, or control the display driving circuit to control the plurality of first pixels to display, and control the fingerprint recognition driving circuit to control the plurality of second pixels to emit light simultaneously.

2. The display screen as described in claim 1, characterized in that, When the screen is on and the device is unlocked, the controller determines whether to perform fingerprint unlocking based on whether the fingerprint unlocking detection module detects that the user has triggered fingerprint unlocking. During the fingerprint unlocking process, the first display area is used for display, and the second display area is used for fingerprint recognition and unlocking.

3. The display screen as described in claim 2, characterized in that, During non-fingerprint unlocking, both the first display area and the second display area are used for display.

4. The display screen as described in claim 1, characterized in that, When unlocking from a screen-off state, the controller determines whether to perform fingerprint unlocking based on whether the fingerprint unlocking detection module detects that the user has triggered fingerprint unlocking. During the fingerprint unlocking process, the fingerprint recognition driving circuit controls multiple second pixels to emit light simultaneously, while the first display area remains undisplayed.

5. The display screen as described in claim 1, characterized in that, When the application is unlocked by fingerprint, the fingerprint unlock detection module is used to receive the fingerprint unlock request from the application and generate a fingerprint unlock trigger signal according to the fingerprint unlock request.

6. The display screen as described in claim 1, characterized in that, It also includes a preset area for displaying the unlock image. The fingerprint unlock detection module is used to detect whether the unlock image is covered by the user's finger. When the unlock image is covered, a fingerprint unlock trigger signal is generated.

7. The display screen as described in claim 6, characterized in that, The preset area is a portion of the first display area.

8. The display screen as described in claim 6, characterized in that, The unlocked image is located in the same area of ​​the display screen as the second display area.

9. The display screen as described in claim 6, characterized in that, The unlocked image is formed by the controller controlling the display driving circuit to display the pixels corresponding to the preset area.

10. An electronic device, characterized in that, Includes the display screen as described in any one of claims 1-9.

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