Display method and electronic device

Abstract

Embodiments of the present application provide a display method and an electronic device, the electronic device comprising an application processor (AP), a display driver chip (DDIC) and a display panel, wherein: the display panel is configured to display a first image; the AP is configured to send first indication information and first parameters to the DDIC; the DDIC is configured to control the brightness of a fingerprint identification region in the first image to be a first brightness and control the brightness of a mask region in the first image to be a second brightness based on the received first indication information, the brightness of the mask region being controlled based on the first parameters, the mask region being a region other than the fingerprint identification region in the first image; and the display panel is configured to display an updated first image, the brightness of the fingerprint identification region in the updated first image being the first brightness and the brightness of the mask region being the second brightness. The present application can improve the display effect of the mask region during optical fingerprint identification and avoid user sentiment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computer, in particular to a display method and an electronic device. BACKGROUND

[0002] Fingerprint recognition technology is widely used in electronic devices, for example, optical fingerprint recognition technology: the electronic device can display a light spot of a specific shape and a specific brightness (for example, an elliptical or circular highlight light spot) on a fingerprint recognition area on the display screen, when the user's finger acts on the light spot, the electronic device can collect the user's optical fingerprint information, and realize functions such as fingerprint unlocking, fingerprint payment, and fingerprint photographing.

[0003] The electronic device can include an application processor (AP), and the user interface of optical fingerprint recognition is generally drawn by the AP and then sent to the display screen for display. However, such display effect is poor, for example, when the electronic device is turned on in an eye protection mode, a vivid mode, or the like, the image drawn by the AP needs to be processed by a color module corresponding to the above mode, which can cause the actual displayed image to have serious color deviation and gray scale overstepping problems. If the eye protection mode, the vivid mode, or the like is turned off during optical fingerprint recognition and then turned on after the optical fingerprint recognition is completed, a flashing screen, a sudden change in color tone, or the like can occur, resulting in user sentiment. SUMMARY

[0004] Embodiments of the present application provide a display method and an electronic device, which can improve the display effect of optical fingerprint recognition and improve user experience.

[0005] In a first aspect, an electronic device is provided, which includes an application processor (AP) and a display screen, and the display screen includes a display driving chip (DDIC) and a display panel. The display panel is configured to display a first image. The AP is configured to send first indication information and first parameters to the DDIC. The DDIC is configured to control the brightness of a fingerprint recognition area in the first image to be a first brightness and control the brightness of a mask area in the first image to be a second brightness based on the received first indication information, and the brightness of the mask area is controlled based on the first parameters, and the mask area is an area in the first image other than the fingerprint recognition area. The display panel is configured to display an updated first image, and the brightness of the fingerprint recognition area in the updated first image is the first brightness, and the brightness of the mask area is the second brightness.

[0006] In some embodiments, the first image is an image before fingerprint recognition, and the updated first image is an image during fingerprint recognition. The brightness of the first image is a second brightness. In some embodiments, the first brightness is greater than the second brightness and greater than or equal to a preset brightness value. In some embodiments, when the display panel displays the first image, the electronic device collects optical fingerprint information of a finger that performs a touch operation on the fingerprint recognition area.

[0007] In the present application, the DDIC can send the first indication information based on the AP, control the brightness of the fingerprint recognition area at the same time, and control the brightness of the mask area through the first parameter sent by the AP (which can be understood as updating the first image) to avoid flashing the screen. Moreover, there is no need for the AP to draw the updated first image, which simplifies the processing flow on the AP side and improves the recognition speed. The updated first image will not be processed by the color module on the AP side, which can ensure that the display modes such as eye protection mode and bright mode will not be closed when displaying the updated first image, avoid public opinion of users, and also ensure good display effect of the mask area.

[0008] In a possible implementation, the DDIC controls the brightness of the fingerprint recognition area in the first image to be a first brightness, including: setting the gray scale of the pixels in the fingerprint recognition area to a first value, and setting the display brightness value DBV to a second value, the value of the gray scale of the pixels in the display panel being less than or equal to the first value, the DBV of the pixels in the display panel being less than or equal to the second value, the gray scale corresponding to the first brightness being the first value, and the DBV corresponding to the first brightness being the second value.

[0009] In some embodiments, the value range of the gray scale of the pixels in the display panel is 0 to 255, and the first value is 255. In some embodiments, the value range of the DBV of the pixels in the display panel is 0-4095, and the second value is 4095.

[0010] In a possible implementation, the AP is further configured to send a brightness code of the fingerprint recognition area to the DDIC, and the brightness code is used to indicate at least one of the following: brightness, color, shape, size, and position. The DDIC controls the brightness of the fingerprint recognition area in the first image to be a first brightness, including: controlling the display of the fingerprint recognition area in the first image based on the received brightness code.

[0011] In the present application, the parameter for controlling the display of the fingerprint recognition area can be a parameter configured by the AP in real time according to different scenes, which has stronger adaptability and is more widely applicable.

[0012] In a possible implementation, the DDIC controls the brightness of the fingerprint recognition area in the first image to be the first brightness, including: controlling the display of the fingerprint recognition area in the first image based on the preset brightness coding.

[0013] In a possible implementation, the brightness of the fingerprint recognition area in the updated first image is greater than the brightness of the fingerprint recognition area in the first image; and the brightness and display content of the mask area in the updated first image are the same as the brightness and display content of the mask area in the first image.

[0014] In a possible implementation, when the display panel displays the updated first image, the dimming mode of the display screen is direct current regulation DC, and the first parameter is an alpha value determined according to the dimming mode of the display screen when the display panel displays the first image and the gray scale of the mask area.

[0015] In a possible implementation, when the display panel displays the first image, the dimming mode of the display screen is pulse width modulation PWM, and the first parameter is less than 1; and when the display panel displays the first image, the dimming mode of the display screen is DC, and the first parameter is equal to 1.

[0016] In a possible implementation, when the display panel displays the first image, the dimming mode of the display screen is PWM, and the gray scale of the mask area is a first gray scale; the DDIC is further configured to switch the dimming mode of the display screen to DC based on the received first indication information; and the DDIC controls the brightness of the mask area in the display panel, including: multiplying the second gray scale corresponding to the mask area after the dimming mode of the display screen is switched to DC by the first parameter, the second gray scale being higher than the first gray scale; when the display panel displays the updated first image, the gray scale of the mask area is the first gray scale obtained by multiplying the second gray scale by the first parameter, and the gray scale corresponding to the second brightness is the first gray scale.

[0017] In some embodiments, the first parameter is equal to a ratio of the first gray scale and the second gray scale.

[0018] In a possible implementation, the fingerprint recognition area includes a first fingerprint recognition area and a second fingerprint recognition area, and the DDIC includes a first DDIC and a second DDIC; the first DDIC is configured to control the brightness of the first fingerprint recognition area in the first image based on the received first indication information; and the second DDIC is configured to control the brightness of the second fingerprint recognition area in the first image based on the received first indication information.

[0019] In the present application, the number, position, and the like of the display mode of the fingerprint identification area can be flexibly configured according to actual needs, and different DDICs can be used to control the brightness of different fingerprint identification areas, so as to avoid excessive processing pressure of a single DDIC in controlling multiple fingerprint identification areas.

[0020] In a possible implementation, the display screen is a folding screen.

[0021] In a second aspect, an embodiment of the present application provides a communication device, including a processor, a memory, and a communication interface, wherein: the processor is configured to determine first indication information and a first parameter; the communication interface is configured to send the first indication information and the first parameter to a display screen, the first indication information is used to indicate the brightness of a fingerprint identification area and a mask area in a first image displayed by the display screen, the mask area is an area outside the fingerprint identification area in the first image, and the first parameter is used to control the brightness of the mask area.

[0022] In some embodiments, the communication device is an application processor (AP).

[0023] In some embodiments, the first image is an image before fingerprint identification. The image displayed after the brightness of the fingerprint identification area and the mask area in the first image displayed by the display screen is controlled, that is, the updated first image, is an image during fingerprint identification. The brightness of the first image is a second brightness. In some embodiments, the first brightness is greater than the second brightness and greater than or equal to a preset brightness value.

[0024] In the present application, the display screen can control the brightness of the fingerprint identification area based on the first indication information sent by the AP, and control the brightness of the mask area based on the first parameter sent by the AP (which can be understood as updating the first image), thereby avoiding screen flashing. Moreover, the AP does not need to draw the updated first image, thereby simplifying the processing flow on the AP side and improving the identification speed. The updated first image does not need to be processed by the color module on the AP side, which can ensure that the display modes such as eye protection mode and bright mode are not closed when the updated first image is displayed, thereby avoiding public opinion of users, and can also ensure good display effect of the mask area.

[0025] In a possible implementation, the processor is further configured to determine a brightness code of the fingerprint identification area, the brightness code is used to indicate at least one of the following: brightness, color, shape, size, and position; and the communication interface is further configured to send the brightness code to the display screen, the brightness code is used to control the display of the fingerprint identification area in the first image.

[0026] In the present application, the parameter for controlling the display of the fingerprint recognition area can be a parameter configured by the AP in real time according to different scenes, which has stronger adaptability and is more widely applicable.

[0027] In a third aspect, the embodiments of the present application provide another communication device, comprising a processor, a memory and a communication interface, wherein: the processor is configured to control a display panel of a display screen to display a first image; the communication interface is configured to receive first indication information and first parameters, and transmit the first indication information and the first parameters to the processor; the processor is configured to control the brightness of a fingerprint recognition area in the first image to be a first brightness and the brightness of a mask area in the first image to be a second brightness based on the received first indication information, the brightness of the mask area being controlled based on the first parameters, and the mask area being an area outside the fingerprint recognition area in the first image; and the processor is configured to control the display panel to display an updated first image, the brightness of the fingerprint recognition area in the updated first image being the first brightness, and the brightness of the mask area being the second brightness.

[0028] In some embodiments, the communication device is a display driving chip (DDIC) of the display screen. In some embodiments, the first indication information and the first parameters received by the communication interface are sent by an application processor (AP).

[0029] In some embodiments, the first image is an image before fingerprint recognition, and the updated first image is an image during fingerprint recognition. The brightness of the first image is the second brightness. In some embodiments, the first brightness is greater than the second brightness and greater than or equal to a preset brightness value.

[0030] In the present application, the DDIC can control the brightness of the fingerprint recognition area based on the received first indication information, and control the brightness of the mask area based on the received first parameters (which can be understood as updating the first image) to avoid flashing. Moreover, the AP does not need to draw the updated first image, which simplifies the processing flow on the AP side and improves the recognition speed. The updated first image does not need to be processed by the color module on the AP side, which can ensure that the display modes such as eye protection mode and bright mode are not closed when the updated first image is displayed, avoid user sentiment, and also ensure good display effect of the mask area.

[0031] In a possible implementation, the processor controls the brightness of the fingerprint recognition area in the first image to be the first brightness, including: setting the gray scale of the pixels in the fingerprint recognition area to a first value, and setting the display brightness value (DBV) to a second value, the gray scale of the pixels in the display panel being less than or equal to the first value, the DBV of the pixels in the display panel being less than or equal to the second value, the gray scale corresponding to the first brightness being the first value, and the DBV corresponding to the first brightness being the second value.

[0032] In some embodiments, the gray scale of the pixels in the display panel ranges from 0 to 255, and the first value is 255. In some embodiments, the DBV of the pixels in the display panel ranges from 0 to 4095, and the second value is 4095.

[0033] In a possible implementation, the communication interface is further configured to receive a brightness code of the fingerprint recognition area, and transmit the brightness code to the processor, the brightness code being used to indicate at least one of the following: brightness, color, shape, size, and position; and the processor controls the brightness of the fingerprint recognition area in the first image to be the first brightness, including: controlling the display of the fingerprint recognition area in the first image based on the received brightness code.

[0034] In this application, the parameter used to control the display of the fingerprint recognition area can be a parameter configured by the AP in real time according to different scenes, which has stronger adaptability and is more widely applicable.

[0035] In a possible implementation, the control of the brightness of the fingerprint recognition area in the first image to be the first brightness includes: controlling the display of the fingerprint recognition area in the first image based on a preset brightness code.

[0036] In a possible implementation, the brightness of the fingerprint recognition area in the updated first image is greater than the brightness of the fingerprint recognition area in the first image; and the brightness and display content of the mask area in the updated first image are the same as the brightness and display content of the mask area in the first image.

[0037] In a possible implementation, when the processor controls the display panel of the display screen to display the updated first image, the dimming mode of the display screen is direct current regulation (DC), and the first parameter is an alpha value determined according to the dimming mode of the display screen when the processor controls the display panel of the display screen to display the first image and the gray scale of the mask area.

[0038] In a possible implementation, when the processor controls the display panel of the display screen to display the first image, the dimming mode of the display screen is pulse width modulation (PWM), and the first parameter is less than 1; or when the processor controls the display panel of the display screen to display the first image, the dimming mode of the display screen is direct current (DC), and the first parameter is equal to 1.

[0039] In a possible implementation, when the processor controls the display panel of the display screen to display the first image, the dimming mode of the display screen is pulse width modulation (PWM), and the gray scale of the mask region is a first gray scale; the processor is further configured to switch the dimming mode of the display screen to DC based on the received first indication information; the processor controls the brightness of the mask region in the first image to be a second brightness, including: multiplying the second gray scale corresponding to the mask region after the dimming mode of the display screen is switched to DC by the first parameter, the second gray scale being higher than the first gray scale; and when the processor controls the display panel to display the updated first image, the gray scale of the mask region is the first gray scale multiplied by the first parameter, and the gray scale corresponding to the second brightness is the first gray scale.

[0040] In some embodiments, the first parameter is equal to a ratio of the first gray scale and the second gray scale.

[0041] In a possible implementation, the display screen is a foldable screen.

[0042] In a fourth aspect, an embodiment of the present application provides a display method applied to an electronic device, the electronic device including an application processor (AP) and a display screen, the display screen including a display driving chip (DDIC) and a display panel, and the method including: displaying, by the display panel, a first image; sending, by the AP, first indication information and a first parameter to the DDIC; controlling, by the DDIC based on the received first indication information, a brightness of a fingerprint recognition region in the first image to be a first brightness, and a brightness of a mask region in the first image to be a second brightness, the brightness of the mask region being controlled based on the first parameter, the mask region being a region other than the fingerprint recognition region in the first image; and displaying, by the display panel, an updated first image, the brightness of the fingerprint recognition region in the updated first image being the first brightness, and the brightness of the mask region being the second brightness.

[0043] In some embodiments, the first image is an image before fingerprint recognition, and the updated first image is an image during fingerprint recognition. The brightness of the first image is the second brightness. In some embodiments, the first brightness is greater than the second brightness and greater than or equal to a preset brightness value. In some embodiments, when the display panel displays the first image, the electronic device collects optical fingerprint information of a finger performing a touch operation on the fingerprint recognition region.

[0044] In the present application, the DDIC can send the first indication information based on the AP, control the brightness of the fingerprint identification area at the same time, and control the brightness of the mask area through the first parameter sent by the AP (which can be understood as updating the first image) to avoid flashing the screen. Moreover, there is no need for the AP to draw the updated first image, which simplifies the processing flow on the AP side and improves the identification speed. The updated first image will not be processed by the color module on the AP side, which can ensure that the display modes such as eye protection mode and bright mode will not be closed when displaying the updated first image, avoid user public opinion, and also ensure good display effect of the mask area.

[0045] In a possible implementation, the control of the brightness of the fingerprint identification area in the first image to the first brightness includes: setting the gray scale of the pixels in the fingerprint identification area to a first value, and setting the display brightness value DBV to a second value, the value of the gray scale of the pixels in the display panel being less than or equal to the first value, the DBV of the pixels in the display panel being less than or equal to the second value, the gray scale corresponding to the first brightness being the first value, and the DBV corresponding to the first brightness being the second value.

[0046] In some embodiments, the value range of the gray scale of the pixels in the display panel is 0 to 255, and the first value is 255. In some embodiments, the value range of the DBV of the pixels in the display panel is 0-4095, and the second value is 4095.

[0047] In a possible implementation, the method further includes: the AP sends the brightness encoding of the fingerprint identification area to the DDIC, and the brightness encoding is used to indicate at least one of the following: brightness, color, shape, size, and position; and the control of the brightness of the fingerprint identification area in the first image to the first brightness includes: controlling the display of the fingerprint identification area in the first image based on the received brightness encoding.

[0048] In the present application, the parameter for controlling the display of the fingerprint identification area can be a parameter configured by the AP in real time according to different scenes, which has stronger adaptability and is more widely applicable.

[0049] In a possible implementation, the control of the brightness of the fingerprint identification area in the first image to the first brightness includes: controlling the display of the fingerprint identification area in the first image based on the preset brightness encoding.

[0050] In a possible implementation, the brightness of the fingerprint identification area in the updated first image is greater than the brightness of the fingerprint identification area in the first image; and the brightness and display content of the mask area in the updated first image are the same as the brightness and display content of the mask area in the first image.

[0051] In a possible implementation, when the display panel displays the updated first image, the dimming mode of the display screen is direct current adjustment DC, and the first parameter is an alpha value determined according to the dimming mode of the display screen when the display panel displays the first image and the gray scale of the mask area.

[0052] In a possible implementation, when the display panel displays the first image, the dimming mode of the display screen is pulse width modulation PWM, and the first parameter is less than 1; when the display panel displays the first image, the dimming mode of the display screen is DC, and the first parameter is equal to 1.

[0053] In a possible implementation, when the display panel displays the first image, the dimming mode of the display screen is PWM, and the gray scale of the mask area is a first gray scale; the method further includes: switching the dimming mode of the display screen to DC based on the received first indication information; the controlling the brightness of the mask area in the display panel includes: multiplying the second gray scale corresponding to the mask area after the dimming mode of the display screen is switched to DC by the first parameter, the second gray scale being higher than the first gray scale; when the display panel displays the updated first image, the gray scale of the mask area is the first gray scale multiplied by the first parameter, and the gray scale corresponding to the second brightness is the first gray scale.

[0054] In some embodiments, the first parameter is equal to a ratio of the first gray scale and the second gray scale.

[0055] In a possible implementation, the fingerprint recognition area includes a first fingerprint recognition area and a second fingerprint recognition area, and the DDIC includes a first DDIC and a second DDIC; the controlling, by the DDIC, the brightness of the fingerprint recognition area in the first image to be the first brightness based on the received first indication information includes: controlling, by the first DDIC based on the received first indication information, the brightness of the first fingerprint recognition area in the first image, and controlling, by the second DDIC based on the received first indication information, the brightness of the second fingerprint recognition area in the first image.

[0056] In a fifth aspect, an embodiment of the present application provides a computer storage medium, which stores a computer program. When the computer program is executed by a processor, the display method provided in the fourth aspect and any implementation manner of the fourth aspect is implemented.

[0057] In a sixth aspect, an embodiment of the present application provides a computer program product, which, when running on a communication device, causes the communication device to perform the display method provided by the fourth aspect of the embodiments of the present application and any implementation manner of the fourth aspect.

[0058] In a seventh aspect, an embodiment of the present application provides an electronic device, which comprises the method or device introduced in any embodiment of the present application. The electronic device is, for example, a chip.

[0059] It should be understood that the description of technical features, technical solutions, advantages or similar language in the present application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it can be understood that the description of a feature or advantage means that the specific technical feature, technical solution or advantage is included in at least one embodiment. Therefore, the description of technical features, technical solutions or advantages in the specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and advantages described in the embodiments can be combined in any appropriate manner. Those skilled in the art will understand that the embodiments can be implemented without one or more specific technical features, technical solutions or advantages of a specific embodiment. In other embodiments, additional technical features and advantages can be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figures 1-4 is a structural schematic diagram of some electronic devices provided by an embodiment of the present application;

[0061] Figure 5 is a process schematic diagram of displaying a fingerprint icon highlighted image provided by an embodiment of the present application;

[0062] Figure 6 shows a process schematic diagram of determining a fingerprint icon highlighted image;

[0063] Figures 7-8 is a schematic diagram of some user interface embodiments provided by an embodiment of the present application;

[0064] Figure 9 is a flow schematic diagram of a display method provided by an embodiment of the present application;

[0065] Figure 10 is a schematic diagram of a dimming mode of a display screen provided by an embodiment of the present application;

[0066] Figures 11-12 is a morphological schematic diagram of some electronic devices provided by an embodiment of the present application. DETAILED DESCRIPTION

[0067] The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the appended claims herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It also will be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0068] The electronic device involved in the embodiments of the present application can be a mobile terminal such as a mobile phone, a tablet computer, a handheld computer, a personal digital assistant (PDA), a smart television, a smart camera, a smart bracelet, a smart watch, smart glasses, or other desktop, laptop, notebook computer, ultra-mobile personal computer (UMPC), netbook, smart screen, and the like.

[0069] Next, an exemplary electronic device 100 according to an embodiment of the present application is introduced.

[0070] Please refer to Figure 1 , Figure 1 An exemplary hardware structure schematic diagram of an electronic device 100 is shown.

[0071] As shown in Figure 1 , the electronic device 100 can include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, a headset interface 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, and the like. The sensor module 180 can include a pressure sensor 180A, a gyroscope sensor 180B, a barometric pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

[0072] It can be understood that the structural schematic of the embodiments of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 can include more or fewer components than shown, or combine certain components, or split certain components, or different arrangement of components. The components shown can be implemented in hardware, software, or a combination of software and hardware.

[0073] The processor 110 can include one or more processing units. For example, the processor 110 can include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units can be independent devices or integrated in one or more processors. For example, the multiple processing units shown above are integrated in one system on chip (SoC), or the AP is a separate semiconductor chip and the other processing units are integrated in one SoC, which is not limited in the present application.

[0074] The controller can generate operation control signals according to instruction operation codes and timing signals, and complete the control of fetching and executing instructions.

[0075] The memory in the processor 110 can also be configured to store instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory can save instructions or data that have just been used or are used repeatedly by the processor 110. If the processor 110 needs to use the instructions or data again, it can directly call from the memory. This avoids repeated access and reduces the waiting time of the processor 110, thereby improving the efficiency of the system.

[0076] In some embodiments, the processor 110 can include one or more communication interfaces (interfaces for short). The interfaces may, for example but not limited to, include: an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a MIPI, a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0077] The MIPI interface can be used to connect the processor 110 and peripheral devices such as the camera 193 and the display screen 194. In some embodiments, the MIPI interface can include a display serial interface (DSI), a camera serial interface (CSI), etc. Optionally, the processor 110 and the camera 193 communicate through the CSI interface to realize the shooting function of the electronic device 100. Optionally, the processor 110 and the display screen 194 communicate through the DSI interface to realize the display function of the electronic device 100.

[0078] It can be understood that the interface connection relationship between the modules shown in the embodiments of the present application is only illustrative and does not constitute a structural limitation of the electronic device 100. In other embodiments of the present application, the electronic device 100 can also use different interface connection methods or combinations of multiple interface connection methods in the above embodiments.

[0079] The charging management module 140 is configured to receive charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 can receive charging input from a wired charger through the USB interface 130. In some wireless charging embodiments, the charging management module 140 can receive wireless charging input through the wireless charging coil of the electronic device 100. The charging management module 140 can charge the battery 142 while also supplying power to the electronic device through the power management module 141.

[0080] The power management module 141 is configured to connect the battery 142 and the charging management module 140 to the processor 110. The power management module 141 receives input from the battery 142 and / or the charging management module 140 to power the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 can also be configured to monitor parameters such as battery capacity, battery cycle count, battery health status (leakage, impedance), and the like. In some embodiments, the power management module 141 can also be disposed in the processor 110. In some embodiments, the power management module 141 and the charging management module 140 can also be disposed in the same device.

[0081] The wireless communication function of the electronic device 100 can be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor, and the baseband processor, and the like.

[0082] The antenna 1 and the antenna 2 are configured to transmit and receive electromagnetic wave signals. Each antenna in the electronic device 100 can be configured to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example, the antenna 1 can be multiplexed as a diversity antenna for a wireless local area network. In some embodiments, the antennas can be used in combination with a tuning switch.

[0083] The mobile communication module 150 can provide a solution for wireless communication including 2G / 3G / 4G / 5G and the like applied to the electronic device 100. The mobile communication module 150 can include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), and the like. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, and perform filtering, amplification, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can also amplify signals modulated by the modem processor, and radiate the amplified signals as electromagnetic waves through the antenna 1. In some embodiments, at least part of the functional modules of the mobile communication module 150 can be disposed in the processor 110. In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 can be disposed in the same device.

[0084] The modem processor can include a modulator and a demodulator. The modulator is configured to modulate a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is configured to demodulate a received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. The low-frequency baseband signal processed by the baseband processor is transmitted to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a microphone 170B, etc.), or displays an image or a video through the display 194. In some embodiments, the modem processor can be a separate device. In other embodiments, the modem processor can be independent of the processor 110 and disposed in the same device as the mobile communication module 150 or other functional modules.

[0085] The wireless communication module 160 can provide a wireless communication solution including a wireless local area network (WLAN) (such as a wireless fidelity (Wi-Fi) network), Bluetooth (BT), a global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR) technology, and the like, which are applied to the electronic device 100. The wireless communication module 160 can be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives an electromagnetic wave via the antenna 2, performs frequency modulation and filtering processing on the electromagnetic wave signal, and transmits the processed signal to the processor 110. The wireless communication module 160 can also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification thereon, and radiate the signal as an electromagnetic wave via the antenna 2.

[0086] In some embodiments, the antenna 1 and the mobile communication module 150 of the electronic device 100 are coupled, and the antenna 2 and the wireless communication module 160 are coupled, so that the electronic device 100 can communicate with a network and other devices through wireless communication technology. The wireless communication technology can include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, and / or IR technology, etc. The GNSS can include a global positioning system (GPS), a global navigation satellite system (GLONASS), a beidu navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and / or a satellite based augmentation systems (SBAS).

[0087] The electronic device 100 can implement a display function through a GPU, a display screen 194, and an application processor, etc. In some embodiments, the GPU is a microprocessor for image processing, connected to the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 can include one or more GPUs that execute program instructions to generate or change display information.

[0088] The display screen 194 is configured to display images, videos, and the like. The display screen 194 can include a display driver integrated circuit (DDIC) and a display panel. The DDIC is an apparatus (e.g., a chip) inside the display screen 194 for controlling the operation of the display screen 194. For example, the DDIC can generate certain electrical signals to control the display panel to display images. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flex light-emitting diode (FLED), a Miniled, a MicroLed, a Micro-oLed, a quantum dot light emitting diodes (QLED), or the like. In some embodiments, the electronic device 100 can include one or N display screens 194, where N is a positive integer greater than 1. In some embodiments, one display screen 194 can include one or N DDICs.

[0089] The electronic device 100 can implement the photographing function through the ISP, the camera 193, a video codec, a GPU, the display screen 194, and an application processor.

[0090] The ISP is configured to process the data fed back by the camera 193. For example, when taking a photo, the shutter is opened, the light is transmitted to the camera photosensitive element through the lens, the light signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing to convert it into an image visible to the naked eye. The ISP can also optimize the algorithm for the noise, brightness, and skin color of the image. The ISP can also optimize the exposure, color temperature, and other parameters of the shooting scene. In some embodiments, the ISP can be disposed in the camera 193.

[0091] The camera 193 is used to capture still images or videos. An object projects an optical image through a lens to a photosensitive element. The photosensitive element can be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, which is then passed to an ISP for conversion into a digital image signal. The ISP outputs the digital image signal to a DSP for processing. The DSP converts the digital image signal into a standard RGB, YUV, or the like format image signal. In some embodiments, the electronic device 100 can include one or N cameras 193, where N is a positive integer greater than one.

[0092] The digital signal processor is used to process digital signals, in addition to processing digital image signals, it can also process other digital signals. For example, when the electronic device 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy, etc.

[0093] The video codec is used to compress or decompress digital video. The electronic device 100 can support one or more video codecs. In this way, the electronic device 100 can play or record videos in multiple encoding formats, such as moving picture experts group (MPEG) 1, MPEG 2, MPEG 3, MPEG 4, etc.

[0094] The NPU is a neural-network (NN) computing processor that learns from the structure of biological neural networks, such as the transmission mode between human brain neurons, to quickly process input information and continuously self-learn. Through the NPU, the electronic device 100 can implement intelligent cognitive applications, such as image recognition, face recognition, voice recognition, text understanding, etc.

[0095] The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement data storage functions. For example, music, video, and other files are saved in the external memory card.

[0096] The internal memory 121 can be used to store computer executable program codes including instructions. The internal memory 121 can include a program storage area and a data storage area. The program storage area can store an operating system, at least one application program required for at least one function (such as a sound play function, an image play function, etc.), and the like. The data storage area can store data created during use of the electronic device 100 (such as audio data, a phonebook, etc.), and the like. In addition, the internal memory 121 can include a high-speed random access memory, and can further include a non-volatile memory such as at least one of a magnetic disk storage device, a flash memory device, a universal flash storage (UFS), and the like. The processor 110 performs various function applications and data processing of the electronic device 100 by executing instructions stored in the internal memory 121 and / or instructions stored in a memory disposed in the processor.

[0097] The electronic device 100 can implement an audio function through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. For example, music play, recording, and the like.

[0098] The audio module 170 is used to convert digital audio information into an analog audio signal output, and is also used to convert an analog audio input into a digital audio signal. The audio module 170 can also be used to encode and decode an audio signal. In some embodiments, the audio module 170 can be disposed in the processor 110, or part of the function modules of the audio module 170 can be disposed in the processor 110.

[0099] The speaker 170A, also referred to as a "loudspeaker", is used to convert an audio electrical signal into a sound signal. The electronic device 100 can listen to music or listen to a hands-free call through the speaker 170A.

[0100] The receiver 170B, also referred to as a "earpiece", is used to convert an audio electrical signal into a sound signal. When the electronic device 100 receives a call or a voice message, the voice can be received by placing the receiver 170B close to the ear.

[0101] Microphone 170C, also called "microphone", "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can make a sound by putting his mouth close to the microphone 170C, inputting the sound signal into the microphone 170C. The electronic device 100 can be provided with at least one microphone 170C. In other embodiments, the electronic device 100 can be provided with two microphones 170C, in addition to collecting sound signals, it can also realize the function of noise reduction. In other embodiments, the electronic device 100 can also be provided with three, four or more microphones 170C, which can realize the functions of collecting sound signals, noise reduction, identifying sound sources, realizing directional recording, etc.

[0102] The earphone interface 170D is used to connect the wired earphone. The earphone interface 170D can be a USB interface 130, or a 3.5mm open mobile terminal platform (OMTP) standard interface, a cellular telecommunications industry association of the USA (CTIA) standard interface.

[0103] The pressure sensor 180A is used to sense the pressure signal, which can convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A can be provided in the display screen 194. There are many types of pressure sensors 180A, such as resistance pressure sensors, inductance pressure sensors, and capacitance pressure sensors. The capacitance pressure sensor can include at least two parallel plates made of conductive material. When a force acts on the pressure sensor, the capacitance between the electrodes changes. The electronic device 100 determines the intensity of the pressure according to the change of the capacitance. When a touch operation acts on the display screen 194, the electronic device 100 can detect the intensity of the touch operation according to the pressure sensor 180A. The electronic device 100 can also calculate the position of the touch according to the detection signal of the pressure sensor 180A, for example, determine that the touch operation is located in the fingerprint recognition area. In some embodiments, touch operations acting on the same touch position but with different touch operation intensities can correspond to different operation instructions. For example, but not limited to, when a touch operation with a pressure value less than a first pressure threshold value acts on a short message application icon, an instruction to view short messages is executed. When a touch operation with a pressure value greater than or equal to the first pressure threshold value acts on the short message application icon, an instruction to create a new short message is executed.

[0104] Touch sensor 180K, also referred to as "touch device". In some embodiments, touch sensor 180K can be disposed in display screen 194, and touch sensor 180K and display screen 194 together form a touch screen, also referred to as "touch panel". Touch sensor 180K is configured to detect touch operations acting on or near the touch sensor 180K. Touch sensor 180K can transmit the detected touch operation to processor 110 to determine the type of touch event, for example, when display screen 194 displays a lock screen interface, touch sensor 180K can transmit the detected touch operation acting on the fingerprint recognition area to the AP, and the AP can determine that the touch event type corresponding to the touch operation is fingerprint unlocking. Electronic device 100 can provide visual output related to the touch operation through display screen 194, for example, electronic device 100 displays visual output related to the above-mentioned touch operation acting on the fingerprint recognition area through display screen 194: the brightness of the fingerprint recognition area is increased. In other embodiments, touch sensor 180K can also be disposed on the surface of electronic device 100, which is different from the position where display screen 194 is located.

[0105] Fingerprint sensor 180H is configured to collect fingerprints. In some embodiments, fingerprint sensor 180H is disposed in the fingerprint recognition area of display screen 194, and in other embodiments, fingerprint sensor 180H is disposed below the fingerprint recognition area of display screen 194. In some embodiments, electronic device 100 can collect optical fingerprint information of the finger acting on the fingerprint recognition area through fingerprint sensor 180H. In some embodiments, electronic device 100 can use the collected fingerprint characteristics to implement functions such as fingerprint unlocking, fingerprint payment, application lock access, fingerprint photographing, fingerprint call answering, etc.

[0106] Ambient light sensor 180L is configured to sense ambient light brightness. In some embodiments, electronic device 100 can adaptively adjust the brightness of display screen 194 according to the sensed ambient light brightness. In some embodiments, when the DDIC in display screen 194 controls the brightness of the fingerprint recognition area, even if the ambient light brightness sensed by the ambient light sensor changes, the brightness of the area outside the fingerprint recognition area (referred to as the mask area) will not change before and after the brightness of the fingerprint recognition area is adjusted.

[0107] Gyroscope sensor 180B can be used to determine the motion posture of electronic device 100. In some embodiments, the angular velocity of electronic device 100 around three axes (i.e., x, y, and z axes) can be determined by gyroscope sensor 180B. Gyroscope sensor 180B can be used to detect a lifting operation acting on electronic device 100, for example, electronic device 100 can display a user interface in the fingerprint unlocking in response to the lifting operation. The gyroscope sensor can also be used for shooting anti-shake, navigation, and motion game scenarios.

[0108] The acceleration sensor 180E can detect the magnitude of acceleration of the electronic device 100 in various directions (typically, three axes). The magnitude and direction of gravity can be detected when the electronic device 100 is stationary. It can also be used to identify the posture of the electronic device 100 (e.g., whether it is lifted) and applied to optical fingerprint recognition, landscape / portrait switching, a pedometer, and the like.

[0109] The keys 190 include a power key, a volume key, and the like. The keys 190 can be mechanical keys. They can also be touch keys. The electronic device 100 can receive key input and generate key signal input related to user settings and function control of the electronic device 100.

[0110] The motor 191 can generate a vibration cue. The motor 191 can be used for incoming call vibration cues and also for touch vibration feedback. For example, touch operations for different applications (e.g., photographing, audio playback, and the like) can correspond to different vibration feedback effects. Touch operations on different regions of the display screen 194 can also correspond to different vibration feedback effects. Different application scenarios (e.g., time reminders, received messages, alarms, games, and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effects can also be customizable.

[0111] The indicator 192 can be an indicator light and can be used to indicate a charging state, a power change, and the like, and also to indicate messages, missed calls, notifications, and the like.

[0112] See Figure 2 , Figure 2 An exemplary hardware structure diagram of yet another electronic device 100 is shown.

[0113] As shown in Figure 2 , the electronic device 100 can include a processor 210, a display screen 220, a memory 230, and a transceiver 240. Among them, the processor 210 can include an application processor (AP) 211, and the display screen 220 can include a display driving integrated circuit (DDIC) 221 and a display panel 222. In some embodiments, the processor 210 can be the processor 110 shown in Figure 1 , and optionally, the processor 210 can include one or more APs 211. In some embodiments, the display screen 220 can be the display screen 194 shown in Figure 1 , and optionally, the display screen 220 can include one or more DDICs 221. In some embodiments, the memory 230 can include the external memory interface 120 and / or the internal memory 121 shown in Figure 1 . In some embodiments, the transceiver 240 can include at least one of the antenna 1, the antenna 2, the mobile communication module 150, and the wireless communication module 160 shown in Figure 1 .

[0114] not limited to Figure 2 In some examples, the electronic device 100 can further include at least one module as shown in FIG. 1, which can be seen from the content of the above description. Figure 1 Figure 1

[0115] In the present application, the electronic device 100 can implement optical fingerprint identification. In the optical fingerprint identification, the user's finger generally acts on the fingerprint identification area in the display panel 222. The light at the fingerprint identification area can be used to irradiate the finger, and the reflection information of the light can be detected by another receiving device (for example, a fingerprint sensor), and then the optical fingerprint information can be obtained. Therefore, during the fingerprint identification, the brightness of the fingerprint identification area is usually very high, for example, higher than the brightness of the other area (referred to as the mask area) in the display panel 222 except the fingerprint identification area. Before the fingerprint identification, the brightness of the fingerprint identification area is usually consistent with the brightness of the mask area. Before and during the fingerprint identification, the display effect of the fingerprint identification area is different, for example, the fingerprint icon is displayed on the fingerprint identification area before the fingerprint identification, and the color of the content displayed on the fingerprint identification area is white during the fingerprint identification. Before and during the fingerprint identification, the display effect of the mask area does not change, for example, the display content does not change.

[0116] In the present application, the brightness of the fingerprint identification area is greater than or equal to a preset brightness value, for example, greater than or equal to 800 nits (nit), which can be referred to as high brightness of the fingerprint identification area. The brightness of the fingerprint identification area is greater than or equal to the preset brightness value and higher than the brightness of the mask area, which can be referred to as local high brightness of the fingerprint identification area.

[0117] At present, the image drawn by the AP 211 can be sent to the DDIC 221 through a communication interface (for example, MIPI), and the DDIC 221 controls the display panel 222 to display. The drawn image is, for example, the image displayed on the display screen 220 during the optical fingerprint identification. The electronic device 100 can include multiple APs 211, which can belong to different manufacturers and different platforms. The electronic device generally includes only one display screen 220 of one manufacturer. In different scenarios, the electronic device 100 can use different APs 211 to draw images, for example, the APs used to draw images are different during the fingerprint unlocking and the fingerprint payment, which can cause the display effect of the mask area to be different before and during the fingerprint identification, and the user experience is not good.

[0118] ​​In the present application, the AP 211 can send indication information to the DDIC 221 through a communication interface (for example, MIPI) to make the DDIC 221 control the brightness of the fingerprint identification area and control the brightness of the mask area, and the display panel 222 can display the image during fingerprint identification under the control of the DDIC 221. It can also be understood that the AP 211 instructs the DDIC 211 to realize local highlight of the fingerprint identification area. The image during fingerprint identification does not need to be drawn by the AP 211, and is independent of the manufacturer and platform of the AP 211, and has good display effect and improves user experience.

[0119] In some embodiments, the AP 211 can include a fingerprint spot module 211A, a communication interface 211B, a drawing module 211C, a sub-pixel rearrangement (SPR) module 211D, and a color module 211E. The DDIC 221 of the display screen 220 can include a communication interface 2211, a local highlight module 2212, and a conversion module 2213, which can be specifically referred to Figure 3 The electronic device 100 shown. Figure 3 Only the AP 211 and the display screen 220 are shown, and other modules can be referred to Figures 1-2 The description.

[0120] The fingerprint spot module 211A can be used to determine first indication information, which is used to instruct the DDIC 221 to determine the image during fingerprint identification. The fingerprint spot module 211A can be used to determine parameters for realizing local highlight of the fingerprint identification area. In some embodiments, the parameters can include an alpha value used when the mask area reduces the gray scale, and the alpha value ranges from 0 to 1. The smaller the alpha value, the stronger the effect of reducing the gray scale. The alpha value can be used by the DDIC 221 to control the brightness of the mask area, so that the display effect of the mask area does not change (for example, the display content and the brightness do not change) before and during fingerprint identification. In some embodiments, the parameters can include brightness encoding of the fingerprint identification area, which can be used to indicate the brightness value of the fingerprint identification area, but is not limited to this, and can also be used to indicate parameters such as the number, size, position, shape, and color of the fingerprint identification area. The brightness encoding can be used by the DDIC 221 to control the brightness of the fingerprint identification area, so that the fingerprint identification area is highlighted during fingerprint identification, so that the electronic device 100 can collect optical fingerprint information of the finger of the touch operation acting on the fingerprint identification area.

[0121] The communication interface 211B can be a MIPI interface. Without limitation, in other embodiments, the communication interface 211B can also be a high definition multimedia interface (HDMI) or other communication interface. The communication interface 211B can be used to send data and / or instructions to the DDIC 221, such as the first indication information determined by the fingerprint light spot module 211A, parameters for implementing local highlighting of the fingerprint recognition area, and the like, images determined by the drawing module 211C (transmitted to the communication interface 211B after processing by the SPR module 211D and the color module 211E), and the like.

[0122] The drawing module 211C can be used to draw images, and the drawn images are used to be sent to the display screen 220 for display. For example, the drawing module 211C can draw images during fingerprint recognition (e.g., images including animation effects of fingerprint unlocking), and specific examples can be referred to in the following Figure 6 The drawing module 211C can also draw images before fingerprint recognition (such as a lock screen interface, etc.), images after fingerprint recognition (such as a desktop or application interface of the electronic device 100, etc.).

[0123] The SPR module 211D can be used to perform SPR processing on the image obtained by the rendering module 211C. In some embodiments, the pixels inside the display panel can not be arranged in a real red green blue (RGB) mode: one pixel includes three sub-pixels R, G, and B, i.e., the three sub-pixels R, G, and B are lit to display the pixel as white. One pixel inside the display panel can be composed of at least one of the three sub-pixels R, G, and B, for example, one pixel 1 includes one R sub-pixel and one G sub-pixel, and another pixel 2 includes one B sub-pixel and one G pixel. The SPR processing can achieve the effect of "borrowing" the B sub-pixel of the pixel 2 to "supplement" the missing B pixel of the pixel 1, and lighting the B sub-pixel of the pixel 2 to form a white pixel 1. Therefore, the SPR processing can reduce the amount of image data transmitted between the AP 211 and the DDIC 221, thereby reducing the transmission bandwidth and power consumption. It can be understood that the AP 211 adopts a more advanced process than the DDIC 221 of 40 nanometers (nm) process, for example, 7 nm or 5 nm. The power consumption of the same SPR algorithm running on the AP 211 side is lower than that running on the DDIC 221 side, and one set of SPR algorithm can meet the needs of an electronic device 100. Therefore, it is common to run the SPR algorithm on the AP 211 side to achieve the purpose of saving the power consumption of the electronic device (which can save about 100 milliampere hours (mAh) of battery capacity per day). However, after the SPR module 211D processes the image obtained by the rendering module 211C during fingerprint recognition, there is a clear demarcation line in the grayscale transition of the image on the mask area, i.e., it is impossible to simultaneously ensure low power consumption and good display effect during optical fingerprint recognition.

[0124] The color module 211E can be used to implement eye protection mode, bright mode, and other display modes of the electronic device 100. When these display modes are turned on, the color module 211E can process the image obtained by the rendering module 211C, for example, adjust the brightness, adjust the color, and the like. However, after the color module 211E processes the image obtained by the rendering module 211C during fingerprint recognition, the image on the mask area will have a serious color cast and grayscale transition problem, and the display effect is poor. If the eye protection mode, bright mode, and other modes are turned off during fingerprint recognition and then turned on after fingerprint recognition is completed, sensitive users may perceive a flash screen, a color tone mutation, and the like, resulting in user sentiment.

[0125] The communication interface 2211 of the DDIC 221 and the communication interface 211B of the AP 211 are similar. The communication interface 2211 can be used to receive data and / or instructions sent by other devices (e.g., the AP 211). In some embodiments, the DDIC 221 can receive an image determined by the drawing module 211C of the AP 211 and control the display panel 222 to display. In other embodiments, the DDIC 221 can receive first indication information determined by the fingerprint light spot module 211A of the AP 211, and optionally, parameters for implementing local highlighting of the fingerprint recognition area, and transmit to the local highlighting module 2212 for processing. In some embodiments, the first indication information determined by the fingerprint light spot module 211A, and optionally, the parameters for implementing local highlighting of the fingerprint recognition area, can be directly transmitted to the DDIC 211 through the communication interface 211B, which can be understood as bypassing the SPR module 211D and the color module 211E.

[0126] The local highlighting module 2212 can be used to determine an image during fingerprint recognition in response to the first indication information sent by the AP 211. In some embodiments, the local highlighting module 2212 can control the brightness of the fingerprint recognition area and the brightness of the mask area at the same time in response to the first indication information, so as to avoid the problem of flashing screen. In some embodiments, the image during fingerprint recognition determined by the local highlighting module 2212 can be transmitted to the conversion module 2213. The conversion module 2213 can be used to process the image to be displayed to convert it into a signal for controlling the display panel 222 to display, which can be transmitted to the display panel 222 to make the display panel 222 display the above-mentioned image to be displayed, such as the image during fingerprint recognition.

[0127] In some embodiments, the local highlighting module 2212 can include an enabling module 2212A, a fingerprint module 2212B, and a mask module 2212C, which can be specifically referred to as Figure 4 the electronic device 100 shown in the figure.

[0128] The enabling module 2212A can be used to instruct the fingerprint module 2212B to control the brightness of the fingerprint recognition area and instruct the mask module 2212C to control the brightness of the mask area based on the first indication information sent by the AP 211, so as to determine the image during fingerprint recognition. In some embodiments, when the AP 211 sends the first indication information, the address information of the enabling module 2212A can be sent together, and optionally, the first indication information can be written into the enabling module 2212A corresponding to the address information. Exemplarily, when the first indication information is written into the enabling module 2212A, the bit of the enabling module 2212A can be set to 1, which can be understood as setting the corresponding hardware circuit to high level, and can be understood as enabling the function of local highlighting of the fingerprint recognition area.

[0129] The fingerprint module 2212B can be used to control the brightness of the fingerprint recognition area, and is not limited thereto, but can also control the number, size, position, shape, color, and the like of the display effect of the fingerprint recognition area. In some embodiments, the fingerprint module 2212B can control the brightness of the fingerprint recognition area based on the enable signal sent by the enable module 2212A, and in other embodiments, the fingerprint module 2212B can control the brightness of the fingerprint recognition area based on the first indication information sent by the AP 211.

[0130] In some embodiments, the fingerprint module 2212B can control the brightness of the fingerprint recognition area based on the brightness code of the fingerprint recognition area sent by the AP 211. Optionally, when the AP 211 sends the brightness code of the fingerprint recognition area, the address information of the fingerprint module 2212B can be sent together. Optionally, the brightness code can be written to the fingerprint module 2212B corresponding to the address information. Optionally, the brightness code can include an enable signal of the fingerprint module 2212B. When the brightness code is written to the fingerprint module 2212B, the fingerprint module 2212B can be enabled to control the brightness of the fingerprint recognition area. Illustratively, when the brightness code is written to the fingerprint module 2212B, the bit of the fingerprint module 2212B can be set to 1, which can be understood as enabling the function of controlling the display of the fingerprint recognition area. Optionally, the brightness code can be used to indicate the brightness value of the fingerprint recognition area, for example, the brightness code 1110 indicates that the brightness value is 800 nit, and the brightness code 1111 indicates that the brightness value is 850 nit. Not limited thereto, the brightness code can also be used to indicate other parameters of the fingerprint recognition area, such as the number, size, position, shape, color, and the like.

[0131] In other embodiments, the fingerprint module 2212B can control the brightness of the fingerprint recognition area based on the preset brightness of the fingerprint recognition area, and is not limited thereto, but can also have other parameters such as the number, size, position, shape, color, and the like preset. The display of the fingerprint recognition area can be controlled based on the preset parameters of the fingerprint recognition area.

[0132] In some embodiments, the fingerprint module 2212B controls the brightness of the fingerprint recognition area, specifically, sets the gray scale of the pixels in the fingerprint recognition area and the display brightness value (DBV). Assuming that the brightness value of the pixels in the fingerprint recognition area when highlighted is 900 nit, and the DBV corresponding to 900 nit is a first threshold value, the fingerprint module 2212B controls the DBV to be set to the first threshold value and the gray scale to be set to a second threshold value when the fingerprint recognition area is highlighted. Alternatively, the DBV corresponding to the brightness value of the pixels in the fingerprint recognition area when highlighted is usually a maximum value, for example, the value of the DBV is 0-4095, and the first threshold value is 4095. Alternatively, the gray scale of the pixels in the fingerprint recognition area when highlighted is usually set to a maximum value, for example, the value of the gray scale is 0-255, and the second threshold value is 255. Alternatively, when the gray scale of the pixels in the fingerprint recognition area is usually set to the maximum value, the color of the image of the fingerprint recognition area is white.

[0133] When the fingerprint module 2212B controls the brightness of the fingerprint recognition area, the display panel 222 displays the image during fingerprint recognition. It can be understood that the fingerprint module 2212B controls the display brightness of the fingerprint recognition area when the display panel 222 displays the image during fingerprint recognition.

[0134] The mask module 2212C can be used to control the brightness of the mask area. In some embodiments, the mask module 2212C can control the brightness of the mask area based on the enable signal sent by the enable module 2212A. In other embodiments, the mask module 2212C can control the brightness of the mask area based on the first indication information sent by the AP 211.

[0135] In some embodiments, the mask module 2212C can control the brightness of the mask area based on the alpha value sent by the AP 211. In other embodiments, the mask module 2212C can determine the alpha value by itself and control the brightness of the mask area based on the alpha value determined by itself. In other embodiments, the mask module 2212C can be preconfigured with an alpha value (for example, 1, which can be understood as the brightness of the image before and after the gray scale is reduced is unchanged), and can control the brightness of the mask area based on the preconfigured alpha value.

[0136] When the mask module 2212C controls the brightness of the mask area, the display panel 222 displays the image during fingerprint recognition. It can be understood that the mask module 2212C controls the display brightness of the mask area when the display panel 222 displays the image during fingerprint recognition.

[0137] In some embodiments, the mask module 2212C controls the brightness of the mask area, specifically: reducing the gray scale of the image of the mask area (for example, adjusting the brightness, adjusting the color, etc.), so that the display effect of the image of the mask area (which can be referred to as a display mask) when the display panel 222 displays the image during fingerprint identification is consistent with the display effect of the image of the mask area (which can be referred to as a reference mask) when the display panel 22 displays the image before fingerprint identification, for example, the image content, brightness, frame rate, etc. are all the same, wherein the frame rate can be understood as the number of frames of images displayed per second, with units of hertz (hz). Illustratively, the mask module 2212C can first process the reference mask (for example, adjust the brightness), and then multiply the gray scale of the image of the processed mask area by the alpha value, to obtain the gray scale of the display mask. The value of alpha ranges from 0 to 1, and the smaller the value of alpha, the stronger the effect of reducing the gray scale. Alternatively, the mask module 2212C can not process the reference mask, and directly use the reference mask as the display mask (which can be understood as the alpha value being equal to 1).

[0138] In some embodiments, the mask module 2212C can reduce the gray scale of the image of the mask area based on the alpha value sent by the AP 211. Optionally, when the AP 211 sends the alpha value, it will also send the address information of the mask module 2212C. Optionally, when the AP 211 sends the alpha value, it will also send an enable signal of the mask module 2212C. Optionally, the enable signal can be written to the mask module 2212C corresponding to the address information. Illustratively, when the enable signal is written to the mask module 2212C, the bit of the mask module 2212 can be set to 1, which can be understood as enabling the function of controlling the display of the mask area. Optionally, the alpha value can be written to the mask module 2212C corresponding to the address information. Illustratively, when the alpha value is written to the mask module 2212C, the mask module 2212C can reduce the gray scale of the reference mask through the alpha value, to ensure that the display effect of the display mask and the reference mask is consistent.

[0139] It can be understood that any one of the modules included in the electronic device 100 in the above examples can be a hardware module or a software module. Any one of the above modules can be a separate module, and at least one of the above modules can be integrated together.

[0140] Without being limited to the above-mentioned examples, in other embodiments, the AP can include a processor, a memory, and a communication interface. In other embodiments, the DDIC can include a processor, a memory, and a communication interface. Among them, the processor includes one or more CPUs, and when the processor includes one CPU, the CPU can be a single-core CPU or a multi-core CPU. The memory includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM). The memory is used to store related computer programs and data. The communication interface is used to receive and / or send information, for example, to transmit instructions and / or data between the AP and the DDIC.

[0141] In some embodiments, the AP 211 can include a GPU and a display subsystem (DSS). The GPU can be used for drawing and rendering calculation of image data to generate an image to be displayed. The GPU can also be referred to as a display core or a visual processor, which is a microprocessor that performs image operation work and can include 2D (Dimension) and / or 3D processing functions. The DSS can be used to interface with a display screen and perform display processing on the image to be displayed generated by the CPU or the GPU. Unlike the GPU, which performs specific display image pixel-level processing, the device performs desktop-level display processing such as image scaling (size transformation), direction flipping, brightness and contrast adjustment, overlay of multiple layers / windows, and the like. Illustratively, the AP 211 can include a CPU, a GPU, and a DSS. Figures 3-4 In the illustrated AP 211, the fingerprint spot module 211A and the drawing module 211C can be integrated in the GPU, and the SPR module 211D and the color module 211E can be integrated in the DSS.

[0142] In some embodiments, the memory of the DDIC 221 can include one or more registers. A specific example is shown as follows:

[0143] Example 1, the AP 211 can include a CPU, a GPU, and a DSS. Figure 4 In the illustrated DDIC 221, the local highlight module 2212 can be a register, and the enable module 2212A, the fingerprint module 2212B, and the mask module 2212C can be sub-modules at different addresses of the register.

[0144] Example 2, the DDIC 221 can include a CPU, a GPU, and a DSS. Figure 4In the illustrated DDIC 221, the enable module 2212A, the fingerprint module 2212B, and the mask module 2212C can be different registers at different addresses in the memory.

[0145] In Example 3, the enable module 2212A and the fingerprint module 2212B in the illustrated DDIC 221 can be sub-modules at different addresses on one register. Figure 4

[0146] In Example 4, the enable module 2212A and the mask module 2212C in the illustrated DDIC 221 can be sub-modules at different addresses on one register. Figure 4

[0147] It can be understood that the electronic device 100 can receive a user operation that triggers display of the image during fingerprint recognition, and in response to the user operation, the image during fingerprint recognition can be determined and the display screen 220 can be controlled to display. The above-mentioned user operation is, for example but not limited to, that the pressure sensor and / or the touch sensor detect a touch operation acting on the display screen, the pressure sensor and / or the touch sensor detect a touch operation acting on the fingerprint recognition area, the acceleration sensor and / or the gyroscope sensor detect a lifting operation, etc. If the image during fingerprint recognition is drawn by the AP 211, for example, the image during fingerprint recognition is drawn by the drawing module 211C, the image will be processed by the SPR module 211D and the color module 211E, resulting in poor actual display effect of the mask area. In the present application, the fingerprint light spot module 211A can directly send first indication information to the DDIC 221 through the communication interface 211B, and the DDIC 221 determines the image during fingerprint recognition. The image does not need to pass through the SPR module 211D, so it can ensure low power consumption and good display effect of the mask area at the same time. The image also does not need to pass through the color module 211E, which can ensure that the display mode such as eye protection mode, bright mode, etc. during fingerprint recognition is not closed, avoid user public opinion, and also ensure good display effect of the mask area. Moreover, the present application also simplifies the processing flow on the AP side, improves the recognition speed, and specific examples can be referred to in the following Figure 5 .

[0148] Please refer to Figure 5 , Figure 5 An example of a schematic diagram of a processing flow is shown.

[0149] As Figure 5 ​​As shown in the frame rate diagram, the horizontal axis represents time, and the vertical axis represents the level value. A high level indicates a non-display state, and a low level indicates a display state; high and low levels alternate. Therefore, the time shown on the horizontal axis can include multiple display periods (periods with low level values) and non-display periods (periods with high level values). Display periods occur periodically. A display period can be understood as the time during which the screen displays the current frame of the image, and a non-display period can be understood as the time during which the screen does not display or displays an image that has already been displayed in the previous frame. For example, at a frame rate of 90Hz, one display period is 1 / 90th of a second, or 11.1 milliseconds (ms). At a frame rate of 120Hz, one display period is 1 / 120th of a second, or 8.3 ms.

[0150] like Figure 5 As shown, the first scheme (i.e., the image obtained by the AP when determining the fingerprint recognition) requires three display periods. Specifically, during display period 1, the AP draws the fused image obtained during fingerprint recognition (see the example below for a detailed process). Figure 6 Then, during display period 2, the AP sends the fingerprint recognition image to the DDIC via a communication interface (such as MIPI); finally, during display period 3, the DDIC controls the display panel to display the fingerprint recognition image. In the first scheme, the fingerprint recognition image drawn by the AP needs to wait until the next frame before it can be sent to the display screen. However, the second scheme of this application (i.e., the DDIC determines the fingerprint recognition image) only requires two display periods to implement. Specifically, during display period 1, the AP determines the first indication information, optionally and the parameters for locally highlighting the fingerprint recognition area, and sends the first indication information, optionally and the parameters for locally highlighting the fingerprint recognition area, to the DDIC via a communication interface (such as MIPI); then, during display period 2, the DDIC controls the brightness of the fingerprint recognition area on the display panel based on the first indication information (optionally and the above parameters), and also controls the brightness of the mask area, that is, controls the display panel to display the fingerprint recognition image. This application (i.e., the second scheme) does not require the process of drawing and fusing the fingerprint recognition image, saving one frame time and simplifying the processing flow on the AP side, resulting in higher usability.

[0151] Please see Figure 6 , Figure 6 An exemplary illustration shows a process for an AP to draw and fuse images to obtain fingerprint recognition. In some embodiments, this process may be performed by the above... Figures 3-4 The rendering module 211C of the AP211 shown is used for this purpose. In some embodiments, this process may be implemented by the GPU included in the AP.

[0152] like Figure 6As shown in (A), the AP can first draw a full-screen highlighted image 410, meaning the full-screen brightness is greater than or equal to a preset brightness value. In some embodiments, apart from brightness, other display effects of image 410 can be the same as the display effect of the image displayed before fingerprint recognition, such as the same display parameters like hue. Figure 6 As shown in (B), the AP can first draw an image 420 with the fingerprint recognition area cut out. Here, "the fingerprint recognition area is cut out" actually means that the display parameters of the fingerprint recognition area are not set. If the display screen displays image 420, the fingerprint recognition area can be completely black. In some embodiments, the display effect of the mask area in image 420 can be the same as the display effect of the mask area in the image before fingerprint recognition, such as the same display parameters such as brightness and hue.

[0153] Then, the AP can fuse images 410 and 420 to obtain image 430 for fingerprint recognition, specifically as follows: Figure 6 As shown in (C). For example, the AP can place image 410 below image 420 (image 410 and image 420 are the same size), and image 410 and image 420 completely overlap.

[0154] like Figure 6 As shown in (C), the brightness of the fingerprint recognition area in image 430 is greater than or equal to a preset brightness value and higher than the brightness of the mask area; this can be termed local highlighting of the fingerprint recognition area. The display effect of the mask area in image 430 can be the same as that of the mask area in image 420, for example, the same display parameters such as brightness and hue. Image 430 can be transmitted from the AP to the DDIC via a communication interface, and the DDIC controls the display panel to achieve optical fingerprint recognition.

[0155] Not limited to Figure 6 In some other embodiments, the AP also renders an animation of fingerprint unlocking in the fingerprint recognition area and the surrounding area (within the mask area).

[0156] The following section provides examples of the application scenarios involved in this application.

[0157] Please see Figure 7 , Figure 7 An exemplary schematic diagram of a fingerprint unlock user interface is shown.

[0158] like Figure 7 As shown in (A), the electronic device can display a user interface 700. In some embodiments, the user interface 200 can be a lock screen. The electronic device can receive user operations (e.g., a lift-up operation, a touch operation on the display screen, etc.), and in response to the user operation, the electronic device can display a fingerprint icon in the fingerprint recognition area 701 on the display screen, as shown in specific examples.Figure 7 (B) of FIG. 1A. The above user operation can be understood as a user operation for triggering fingerprint unlocking.

[0159] As shown in Figure 7 (B) of FIG. 1A, the brightness of the fingerprint recognition area 701 is the same as the brightness of the mask area on the user interface 700 except the fingerprint recognition area 701. The electronic device can receive a user operation (e.g., a touch operation) acting on the fingerprint recognition area 701, and in response to the user operation, the electronic device can control the brightness of the fingerprint recognition area 701, as shown in Figure 7 (C) of FIG. 1A. Figure 7 The user interface 700 shown in Figure 7 (B) of FIG. 1A can be referred to as a user interface before fingerprint recognition.

[0160] As shown in Figure 7 (C) of FIG. 1A, the brightness of the fingerprint recognition area 701 is greater than or equal to a preset brightness value, and is higher than the brightness of the mask area on the user interface 700 except the fingerprint recognition area 701. At this time, the electronic device can collect optical fingerprint information of a finger acting on the fingerprint recognition area 701 through the light provided by the fingerprint recognition area 701. Figure 7 The user interface 700 shown in (C) of FIG. 1A can be referred to as a user interface during fingerprint recognition.

[0161] In some embodiments, the user interface 700 can display prompt information 702 of fingerprint unlocking, for example, “Fingerprint recognition in progress, please do not move your finger”. The user can obtain, through the prompt information 702, that the electronic device is currently recognizing the user fingerprint. The electronic device can identify the user identity according to the optical fingerprint information, for example, by comparing the preset optical fingerprint information and the collected optical fingerprint information, if the similarity (e.g., the proportion of the same part in the total content) is greater than or equal to a preset similarity value, it is determined that the identification is passed (it is determined that the current user is a legal user), at this time the electronic device can display the user interface of the desktop or the application program, etc., and if the similarity is less than the preset similarity value, it is determined that the identification is not passed (it is determined that the current user is not a legal user), at this time the electronic device can keep displaying the lock screen interface, wherein the prompt information 702 can be used to indicate the identification result, for example, “Fingerprint recognition failed, please try again”. In other embodiments, Figure 7 The user interface 700 shown in (C) of FIG. 1A can not include the prompt information 702.

[0162] In other embodiments, the electronic device can also directly display the user interface 700 shown in Figure 7 (C) of FIG. 1A after displaying the user interface 700 shown in Figure 7 (A) of FIG. 1A, without displaying the user interface 700 shown in Figure 7 (B) of FIG. 1A. In other embodiments, the electronic device can also not displayFigure 7 The user interface 700 shown in (A) directly displays Figure 7 User interface 700 shown in (B) and Figure 8 The user interface 700 shown in (C) is shown.

[0163] Please see Figure 8 , Figure 8 An exemplary schematic diagram of a fingerprint payment user interface is shown. Figure 8 Let's take the user interface of a payment application as an example for illustration.

[0164] like Figure 8 As shown in (A), the electronic device can display a user interface 810. The user interface 810 may include an interface theme 811 (i.e., "Payment Details"), a payment amount 812, a payment method 813, and a payment control 814. Specifically: the payment amount 812 displays the amount the user needs to pay (i.e., "256.5", in yuan). The payment method 813 can display the payment method used by the user (i.e., "Balance"). The payment method 813 can also be used by the user to switch payment methods. The payment control 814 can be used by the user to confirm the payment operation. The electronic device can receive user actions (e.g., touch operations) applied to the payment control 814. In response to these user actions, the electronic device can identify the user to complete the payment operation, specifically as follows... Figure 8 As shown in (B). The user operation applied to the payment control 814 described above can be understood as triggering fingerprint recognition.

[0165] like Figure 8 As shown in (B), the electronic device can display a user interface 820. The user interface 820 may include an interface theme 821 (i.e., a "payment interface"), a fingerprint recognition area 822, and some prompts. A fingerprint icon may be displayed on the fingerprint recognition area 822. The brightness of the fingerprint recognition area 822 is the same as the brightness of the masked area on the user interface 820 excluding the fingerprint recognition area 822. The electronic device can receive user operations (e.g., touch operations) applied to the fingerprint recognition area 822. In response to the user operation, the electronic device can control the brightness of the fingerprint recognition area 822, i.e., control the fingerprint recognition area on the display screen to be highlighted, as shown in the specific example below. Figure 8 As shown in (C).

[0166] like Figure 7As shown in (C) of FIG. 8, the brightness of the fingerprint recognition area 822 is greater than or equal to the preset brightness value, and is higher than the brightness of the mask area on the user interface 820 except the fingerprint recognition area 822. At this time, the electronic device can collect optical fingerprint information of the finger acting on the fingerprint recognition area 822 through the light provided by the fingerprint recognition area 822, and at this time, the user interface 820 can display prompt information 823 of fingerprint unlocking, such as “Fingerprint recognition, please do not move your finger”. The user can obtain that the electronic device is currently identifying the user fingerprint through the prompt information 823. The electronic device can identify the user identity according to the optical fingerprint information, and when it is determined that the current user is a legal user, the electronic device can display prompt information of payment success, and when it is determined that the current user is not a legal user, the electronic device can keep displaying the payment interface. The prompt information 823 can be used to indicate the identification result, such as “Fingerprint recognition failed, please try again”. The examples of identifying the user identity according to the optical fingerprint information and the above Figure 8 are similar.

[0167] In some other embodiments, Figure 8 The user interface 820 shown in (C) can also not include the prompt information 823.

[0168] In some other embodiments, the electronic device can also directly display the user interface 820 shown in (C) after displaying the user interface 810 shown in (A), and does not display the user interface 820 shown in (B). Figure 8 Figure 8 In some other embodiments, the electronic device can also display the fingerprint recognition area on the user interface 810 shown in (A). Figure 8 Figures 1-8 The above-mentioned examples are not limited, and in specific implementation, the optical fingerprint recognition can also be applied to other identity authentication scenes, fingerprint shooting scenes, etc. The specific application scene of the optical fingerprint recognition is not limited in the present application.

[0169] The above-mentioned examples are not limited, and in specific implementation, the optical fingerprint recognition can also be applied to other identity authentication scenes, fingerprint shooting scenes, etc. The specific application scene of the optical fingerprint recognition is not limited in the present application.

[0170] Based on the embodiments shown in FIG. 8, the display method provided by the embodiments of the present application is introduced as follows. Figure 9 Please refer to

[0171] , Figure 9 , Figure 5 is a flowchart of a display method provided by the embodiments of the present application. The method can be applied to the electronic device 100 shown in FIG. 8. The method can be applied to the electronic device 100 shown in FIG. 8. The method can be applied to the electronic device 100 shown in FIG. 8. The method can include but not limited to the following steps: Figure 6 Figure 7 Figure 7

[0172] ​​​​​S101: An application processor (AP) determines a first user operation.

[0173] Specifically, the first user operation is, for example but not limited to, a touch operation acting on the display screen, a touch operation acting on a fingerprint recognition area on the display screen, a lifting operation, a voice (for example, “unlock”, “payment”), a gesture (for example, clenching a fist, spreading fingers), etc. In some embodiments, when the AP receives the first user operation, it can be determined that the optical fingerprint recognition is triggered, and then the AP can control the display screen to display the user interface during the fingerprint recognition.

[0174] In some embodiments, before S101, the method further includes: a display panel of the display screen displays a first image. The first image is the image before the fingerprint recognition, for example Figure 7 the user interface 700 shown in (A) of FIG. 7, Figure 8 the user interface 820 shown in FIG. 8. When the display panel displays the first image, the brightness of the fingerprint recognition area and the brightness of the mask area are equal. Figure 10

[0175] S102: In response to the first user operation, the AP determines first indication information, fingerprint parameters and mask parameters.

[0176] S103: The AP sends the first indication information, the fingerprint parameters and the mask parameters to a display driver chip (DDIC).

[0177] Specifically, the first indication information is used to instruct the DDIC to determine and display a second image, i.e., the image during the fingerprint recognition. In some embodiments, the first indication information is specifically used to instruct the DDIC to control the brightness of the fingerprint recognition area and the mask area on the display panel.

[0178] In some embodiments, the fingerprint parameters can be used to control the brightness of the fingerprint recognition area. In some embodiments, the fingerprint parameters can be a brightness code of the fingerprint recognition area. Optionally, the brightness code can be used to indicate the brightness value (the unit can be nit) of the fingerprint recognition area, for example, the brightness code 1111 is used to indicate the brightness value of 850 nit, but not limited to this, the brightness code can also be used to indicate the number, size, position, shape, color, etc. of the fingerprint recognition area, and the specific content indicated by the brightness code is not limited in the present application.

[0179] ​In some embodiments, the mask parameter can be used to control the brightness of the mask region, for example, to perform a gray-scale reduction process (for example, to adjust the brightness, to darken the color, etc.) on the image of the mask region. In some embodiments, the mask parameter can include information indicating a dimming mode, and in other embodiments, the mask parameter can be sent to the DDIC together with information indicating the dimming mode. The dimming mode of the display screen can include direct current (DC) and pulse-width modulation (PWM). The DC mode adjusts the brightness of the display screen by changing the current, without limitation, and can also adjust the brightness by changing the voltage, and can also adjust the brightness by changing the current and the voltage. The PWM mode does not change the current and / or voltage. The PWM mode adjusts the brightness of the display screen by adjusting the duty cycle, without limitation, and can also adjust the brightness of the display screen by adjusting the number of pulses, and can also adjust the brightness of the display screen by adjusting the number of pulses and the duty cycle. For examples of PWM mode, see the following Figure 10 wherein, Figure 10 Take the number of pulses as 4 as an example for illustration.

[0180] As shown in Figure 4 , a frame of image can include 4 black bars for blacking out, and the part where the black bar is located can be understood as the off-screen state. The 4 black bars correspond to 4 high-level pulses respectively, and therefore can be understood as high-level representing the off-screen state and low-level representing the on-screen state. In PWM adjustment, the display screen does not continuously emit light, but keeps turning on and off the display screen, i.e., the brightness of the display screen is adjusted by the alternation of turning on and off the display screen. The wider the width of each black bar, i.e., the longer the time of high-level (i.e., the longer the off-screen time), the lower the brightness of the display screen to the human eye. The narrower the width of each black bar, i.e., the shorter the time of high-level (i.e., the longer the on-screen time), the higher the brightness of the display screen to the human eye. It can be understood that the high and low levels appear periodically, and the position of the black bar also changes over time, which can also be understood as: the black bar is constantly moving on each frame of image. The PWM adjustment duty cycle is actually achieved by adjusting the width of the black bar (adjusting the duration of high-level).

[0181] Since PWM adjustment actually regulates the brightness of the display screen by alternating between on and off states, when the dimming mode is PWM, it cannot be guaranteed that the brightness value of the fingerprint recognition area will remain constant and greater than or equal to the preset brightness value during fingerprint recognition. Therefore, if the display screen's dimming mode is PWM before fingerprint recognition, the AP can send information to the DDIC indicating that the dimming mode should be DC. Before fingerprint recognition, the display screen's dimming mode can be either DC or PWM. For example, before fingerprint recognition, if the display screen's brightness is less than or equal to a brightness threshold (e.g., 90 nits), the dimming mode is PWM; if the display screen's brightness is greater than the brightness threshold (e.g., 90 nits), the dimming mode is DC. In some embodiments, the information indicating the DC dimming mode can be sent together with the address of the module on the DDIC used to control the dimming mode. For example, when the information indicating the DC dimming mode is written to the module corresponding to that address, the module's bit can be set to 1, i.e., the dimming mode is set to DC. If the register's bit is set to 0, the dimming mode is set to PWM. The module on the DDIC used to control the dimming mode can be integrated into... Figure 9 The mask module 2212C shown can also be independent of the mask module 2212C.

[0182] In other embodiments, the information used to indicate the dimming mode may also be included in the first indication information. The DDIC can set the dimming mode in response to the first indication information. This application does not limit the specific transmission form of the information used to indicate the dimming mode.

[0183] In some embodiments, the mask parameters may include the alpha value used when reducing grayscale. The alpha value ranges from [0,1]. The smaller the alpha value, the stronger the effect of reducing grayscale, such as lower brightness and darker color.

[0184] In some embodiments, the alpha value can be determined by the AP according to an image of the mask region before the fingerprint recognition (which can be referred to as a reference mask). For example, the AP can determine the alpha value based on an expression used when reducing the gray scale, which is specifically: the gray scale of an image of the mask region during the fingerprint recognition (which can be referred to as a display mask) = the gray scale of the reference mask × the brightening ratio × the alpha. In order to ensure that the display mask and the reference mask are the same (for example, the display parameters such as brightness and color are the same), the brightening ratio × the alpha needs to satisfy 1. Assuming that the dimming mode before the fingerprint recognition is the PWM mode, the reference mask is displayed in the PWM mode. In this case, the AP can first determine an image of the reference mask displayed in the DC mode, which can be referred to as a brightened image. The brightness of the brightened image can be greater than the brightness of the reference mask. Then, the AP can calculate the brightening ratio = (the gray scale of the brightened image / the gray scale of the reference mask), and the brightening ratio is greater than 1. Finally, the AP can calculate the alpha = (1 / the brightening ratio), and the alpha is less than 1. Assuming that the dimming mode before the fingerprint recognition is the DC mode, the brightened image and the reference mask are the same, so the brightening ratio is equal to 1, and the alpha is also equal to 1. In other embodiments, the alpha value can be preset by the AP. For example, when the dimming mode before the highlight of the fingerprint recognition region is the DC mode, the alpha value is preset to 1.

[0185] Optionally, when the display screen displays the image before the fingerprint recognition, the dimming mode is the PWM mode, the brightness of the brightened image is higher than that of the image of the reference mask, and the alpha is less than 1. Optionally, when the display screen displays the image before the fingerprint recognition, the dimming mode is the DC mode, the brightness of the brightened image is equal to that of the image of the reference mask, and the alpha is equal to 1.

[0186] Not limited to the above-mentioned examples, in other embodiments, the brightening ratio can also be calculated in the following manner: the brightening ratio = (the gray scale of the full-screen brightened image / the gray scale of the image before the fingerprint recognition). The full-screen brightened image is an image of the image before the fingerprint recognition displayed in the DC mode, which can also be understood as follows: the AP does not need to first determine the image of the mask region according to the full-screen image, and then determine the alpha value based on the image of the mask region, but can directly determine the alpha value based on the full-screen image.

[0187] S104: The DDIC determines, in response to the first indication information, the image of the local highlight of the fingerprint recognition region based on the fingerprint parameter and the mask parameter.

[0188] Specifically, the DDIC can determine and control the display panel to display a second image, i.e., an image during fingerprint recognition, in response to the first indication information. In some embodiments, the DDIC can update the first image displayed by the display panel in response to the first indication information, specifically, control the brightness of the fingerprint recognition area in the first image to be the first brightness, and control the brightness of the mask area in the first image to be the second brightness, and the updated first image is the second image, i.e., the image during fingerprint recognition. In some embodiments, when the display panel displays the first image (i.e., the image before fingerprint recognition), the brightness of the fingerprint recognition area and the brightness of the mask area are the same, i.e., the second brightness described above. In some embodiments, when the display panel displays the second image (i.e., the image during fingerprint recognition), the brightness of the fingerprint recognition area is greater than or equal to a preset brightness value and is greater than the brightness of the mask area, and the display effect of the mask area is consistent with the display effect of the mask area in the image before fingerprint recognition, i.e., the display effects of the display mask and the reference mask are consistent (e.g., the display parameters such as brightness and hue are the same). Therefore, the fingerprint recognition area in the image during fingerprint recognition can be referred to as locally highlighted. In some embodiments, the DDIC can control the brightness of the fingerprint recognition area on the display panel based on the fingerprint parameter in response to the first indication information, and at the same time control the brightness of the mask area based on the mask parameter, so as to ensure that there is no screen flashing and the like.

[0189] In some embodiments, the DDIC can control the display effect of the fingerprint recognition area, such as the number, size, position, shape, color, etc., based on the fingerprint parameter sent by the AP in response to the first indication information, but is not limited thereto. In some embodiments, the DDIC can determine the driving voltage and / or current of the fingerprint recognition area to be the first voltage and / or the first current based on the fingerprint parameter. Alternatively, the DDIC can set the DBV of the pixel in the fingerprint recognition area to the first threshold value and the gray scale to the second threshold value based on the fingerprint parameter. When the DBV is the first threshold value and the gray scale is the second threshold value, the corresponding driving voltage and / or current is the first voltage and / or the first current. Alternatively, when the fingerprint recognition area is highlighted, the brightness value of the pixel corresponds to the maximum value of the DBV, for example, the value of the DBV is 0-4095, and the first threshold value is 4095. Alternatively, when the fingerprint recognition area is highlighted, the gray scale of the pixel is set to the maximum value, for example, the value of the gray scale is 0-255, and the second threshold value is 255. Alternatively, when the gray scale of the pixel in the fingerprint recognition area is set to the maximum value, the color of the image of the fingerprint recognition area is white.

[0190] In some embodiments, the DDIC can determine the image of the mask area (i.e., the display mask) for fingerprint identification in response to the first indication information based on the mask parameter sent by the AP. In some embodiments, the DDIC can receive the information sent by the AP indicating that the dimming mode is the DC mode, and set the dimming mode to the DC mode. In some embodiments, the DDIC can perform the processing of reducing the gray scale on the image of the mask area before fingerprint identification when the dimming mode is the DC mode (i.e., the reference mask when the dimming mode is the DC mode, also known as the brightening image) based on the mask parameter, to obtain the display mask. In some embodiments, the mask parameter can include the alpha value used when reducing the gray scale, and the DDIC can obtain the display mask according to the brightening image and the alpha value, i.e., the gray scale of the display mask = (gray scale of the brightening image x alpha).

[0191] Without being limited to Figure 9 In some embodiments, the DDIC can determine the image of the mask area (i.e., the display mask) for fingerprint identification in response to the first indication information based on the mask parameter sent by the AP. In some embodiments, the DDIC can receive the information sent by the AP indicating that the dimming mode is the DC mode, and set the dimming mode to the DC mode. In some embodiments, the DDIC can perform the processing of reducing the gray scale on the image of the mask area before fingerprint identification when the dimming mode is the DC mode (i.e., the reference mask when the dimming mode is the DC mode, also known as the brightening image) based on the mask parameter, to obtain the display mask. In some embodiments, the mask parameter can include the alpha value used when reducing the gray scale, and the DDIC can obtain the display mask according to the brightening image and the alpha value, i.e., the gray scale of the display mask = (gray scale of the brightening image x alpha).

[0192] Without being limited to Figure 9 In some embodiments, the DDIC can determine the image of the mask area (i.e., the display mask) for fingerprint identification in response to the first indication information based on the mask parameter sent by the AP. In some embodiments, the DDIC can receive the information sent by the AP indicating that the dimming mode is the DC mode, and set the dimming mode to the DC mode. In some embodiments, the DDIC can perform the processing of reducing the gray scale on the image of the mask area before fingerprint identification when the dimming mode is the DC mode (i.e., the reference mask when the dimming mode is the DC mode, also known as the brightening image) based on the mask parameter, to obtain the display mask. In some embodiments, the mask parameter can include the alpha value used when reducing the gray scale, and the DDIC can obtain the display mask according to the brightening image and the alpha value, i.e., the gray scale of the display mask = (gray scale of the brightening image x alpha).

[0193] It can be understood that since the DDIC can perform some processing (e.g., gamma processing) on the image to be displayed before controlling the display panel to display, when the DDIC calculates the alpha value by itself, the determined brightening image is more consistent with the actual display effect on the display panel, and the display effect of the display mask obtained after reducing the gray scale is also more consistent with the display effect of the reference mask, thereby improving the display effect of the mask area.

[0194] In Figure 6In the method, the AP sends first indication information to the DDIC to control the DDIC to determine and display the image during fingerprint identification. The DDIC can control the brightness of the fingerprint identification area and the mask area at the same time, without the AP drawing the image during fingerprint identification (for example, performing the above Figures 11-12 The display effect does not depend on the AP platform and manufacturer, and the AP side processing flow is simplified, and the identification speed is improved. Moreover, the image during fingerprint identification does not pass through the SPR processing of the AP side, while ensuring low power consumption and good display effect of the mask area. The image during fingerprint identification does not pass through the color processing of the AP side, which can ensure that the display modes such as eye protection mode and bright mode during fingerprint identification are not closed, avoid user public opinion, and ensure good display effect of the mask area.

[0195] Moreover, the fingerprint parameters and / or mask parameters for realizing local high brightness of the fingerprint identification area can be preset parameters of the DDIC, or can be real-time configured parameters of the AP according to different scenes and different display screens, which has stronger adaptability and is more widely applied.

[0196] In a possible implementation, the DDIC can control the display mode of the fingerprint identification area alone, for example, control the size, shape, number, position, color, brightness, etc. of the fingerprint identification area, without affecting the display effect of the mask area outside the fingerprint identification area. For example, the DDIC can control the brightness of the fingerprint identification area alone, without affecting the brightness of the mask area outside the fingerprint identification area (that is, the brightness of the mask area remains unchanged). In some embodiments, the AP can send first indication information and fingerprint parameters to the DDIC. The DDIC can control the display of the fingerprint identification area alone in response to the first indication information and based on the fingerprint parameters sent by the AP. In other embodiments, the AP can send first indication information to the DDIC, and the DDIC can control the display of the fingerprint identification area alone in response to the first indication information and based on preset fingerprint parameters.

[0197] In some embodiments, the number of fingerprint identification areas can be multiple, and the positions of the multiple fingerprint identification areas can be different. The display modes of the multiple fingerprint identification areas can be the same or different, for example, part of the high brightness, part of the non-high brightness, and specific examples can be referred to the following Figure 11 .

[0198] In some embodiments, the electronic device can be configured with a non-foldable display screen, the display screen can include at least one DDIC, and the display screen can have multiple fingerprint identification areas, which can be controlled by one or more DDICs. The one or more DDICs can be all or part of the at least one DDIC included in the display screen, and specific examples are shown in the following Figure 11 .

[0199] Please refer to Figure 11 , Figure 11 An electronic device is exemplarily shown in a schematic view.

[0200] As Figure 11 shown, the electronic device can include one display screen, and the display panel of the display screen can be divided into two regions: region 1 and region 2, and a fingerprint identification region can exist on each of region 1 and region 2. The fingerprint identification region of region 1 can be controlled to display by DDIC1 of the display screen, and the fingerprint identification region of region 2 can be controlled to display by DDIC2 of the display screen. In some embodiments, DDIC1 and DDIC2 can be connected in series, and optionally, one master DDIC and one slave DDIC can exist in DDIC1 and DDIC2, and the master DDIC can be used to control the slave DDIC to work, so as to realize that region 1 and region 2 display one frame of image together.

[0201] Without limitation Figure 12 In the examples listed, in the specific implementation, the fingerprint identification regions of region 1 and region 2 can also be controlled by one DDIC. Alternatively, region 1 and region 2 can also be left and right two regions. Alternatively, one region can include multiple fingerprint identification regions, and the specific display mode of the fingerprint identification region and the DDIC for controlling display are not limited in the present application.

[0202] In other embodiments, the electronic device can be configured with a foldable display screen (which can be referred to as a folding screen), the folding screen can include at least one DDIC, and the folding screen can have multiple fingerprint identification regions, and the multiple fingerprint identification regions can be controlled by one or more DDICs, and the one or more DDICs can be all or part of the at least one DDIC included in the folding screen, and specific examples are shown as follows Figure 12 .

[0203] Please refer to Figure 12 , Figure 12 Another electronic device is exemplarily shown in a schematic view. Among them, Figure 12 (A) shows a schematic view of one viewing angle of the electronic device, Figure 12 (B) shows a schematic view of another viewing angle of the electronic device.

[0204] As Figure 12 shown, the electronic device can include one flexible folding screen, the folding screen can include first display region and second display region on both sides of the bending line, and the folding screen can be bent along the bending line. The folding screen can be in an unfolded state or a bent state (including a folded state), and it can also be understood that the electronic device configured with the folding screen can be in an unfolded state or a bent state.

[0205] As Figure 12As shown in (A) of FIG. 1, when the folding screen is in the unfolded state, the folding angle a of the folding screen is about 180 degrees. The folding angle a of the folding screen can also be understood as the angle between the plane where the first display area is located and the plane where the second display area is located. Without limitation, the folding angle a can be greater than or equal to 170 degrees and less than or equal to 180 degrees. The present application does not limit the specific value of the folding angle of the folding screen in the unfolded state.

[0206] As shown in (A) of FIG. 1, when the folding screen is in the unfolded state, the folding angle a of the folding screen is about 180 degrees. The folding angle a of the folding screen can also be understood as the angle between the plane where the first display area is located and the plane where the second display area is located. Without limitation, the folding angle a can be greater than or equal to 170 degrees and less than or equal to 180 degrees. The present application does not limit the specific value of the folding angle of the folding screen in the unfolded state. Figure 12 As shown in (A) of FIG. 1, when the folding screen is in the unfolded state, the folding angle a of the folding screen is about 180 degrees. The folding angle a of the folding screen can also be understood as the angle between the plane where the first display area is located and the plane where the second display area is located. Without limitation, the folding angle a can be greater than or equal to 170 degrees and less than or equal to 180 degrees. The present application does not limit the specific value of the folding angle of the folding screen in the unfolded state.

[0207] Figure 12 As shown in (A) of FIG. 1, when the folding screen is in the unfolded state, the folding angle a of the folding screen is about 180 degrees. The folding angle a of the folding screen can also be understood as the angle between the plane where the first display area is located and the plane where the second display area is located. Without limitation, the folding angle a can be greater than or equal to 170 degrees and less than or equal to 180 degrees. The present application does not limit the specific value of the folding angle of the folding screen in the unfolded state.

[0208] Without limitation Figure 12 In the case of the above, in the specific implementation, the fingerprint identification area of the region 1 and the region 2 can be controlled by the DDIC1 of the folding screen, and the fingerprint identification area of the region 3 and the region 4 can be controlled by the DDIC2 of the folding screen. Alternatively, the four regions on the folding screen are controlled by one DDIC. Alternatively, there can be more or fewer fingerprint identification areas on the first display area and the second display area. The present application does not limit the specific display mode of the fingerprint identification area and the DDIC for controlling the display.

[0209] Without limitation Figure 12 ​In the enumerated case, in a specific implementation, the folding screen of the electronic device can also be a display screen spliced by rigid screens and flexible screens, chain and other connecting components, for example, the folding screen can be spliced by two rigid screens and a chain for connecting the two rigid screens, the first display area and the second display area are regions on the two rigid screens respectively, and are both used for displaying a user interface. The first display area can include at least one DDIC, and the fingerprint identification regions of region 1 and region 2 on the first display area can be controlled by different DDICs respectively. The second display area can include at least one DDIC, and region 3 and region 4 on the second display area can be controlled by different DDICs respectively. In some embodiments, the DDIC for controlling region 1 in the first display area and the DDIC for controlling region 3 in the second display area can be connected in series, and optionally, one of the two DDICs can be a master DDIC and the other can be a slave DDIC, the master DDIC can be used to control the slave DDIC to work, so as to realize that region 1 and region 3 display one frame of image together. The specific display mode of the fingerprint identification region of the display screen of the electronic device and the DDIC for controlling the display are not limited in the present application.

[0210] Not limited to Figure 11 And Figure 12 In the enumerated case, in a specific implementation, both sides of the electronic device can be configured with a display screen, and the display screens on the two sides can be two display screens or one flexible folding screen. If the display screens on the two sides are two display screens, each display screen can be the display screen shown in Figure 11 , or the display screen shown in Figure 12 . Regardless of the structure, for each display screen, the fingerprint identification region and the DDIC for controlling the fingerprint identification region are similar to those shown in Figures 11-12 . The specific form of the electronic device (which can also be understood as the specific form of the display screen) is not limited in the present application.

[0211] The control mode of each fingerprint identification region is similar to the control mode of the fingerprint identification region shown in Figures 1-10 , and will not be described again.

[0212] It can be understood that the number and position of the fingerprint identification regions and other display modes can be flexibly configured according to actual needs, and the application scenarios are more extensive.

[0213] In a possible implementation, the DDIC can independently realize the function of reducing gray scale to adjust the brightness of the displayed image. For example, when the anti-stroboscopic function is turned on, the DDIC can receive the image drawn by the AP, and then perform the gray scale reduction processing on the image to display the image after the gray scale reduction on the display panel. The implementation of reducing the gray scale is similar to that shown in Figures 1-10The implementation manner of reducing the gray scale of the mask area is similar, but the reduction of the gray scale is not limited to the mask area, but can be the entire or other arbitrary partial area on the display screen. Among them, similar to the fingerprint recognition area highlighting, since the PWM regulation is actually adjusting the brightness of the display screen through the on-off alternation of the display screen, when the dimming mode is the PWM mode, the brightness of the display image cannot be guaranteed to remain unchanged and be a lower brightness value, and thus the anti-flicker function cannot be implemented. If the dimming mode before reducing the gray scale is the PWM mode, the AP can send information indicating that the dimming mode is the DC mode to the DDIC, so as to implement the anti-flicker function.

[0214] Not limited to this, the AP in the present application can also be replaced by other processing chips or processing units such as SoC, and in some embodiments, the SoC or other processing chips or processing units can be integrated with the AP, and in other embodiments, the AP is independent of the SoC or other processing chips or processing units.

[0215] Not limited to this, the DDIC in the present application can also be replaced by other driving chips or processing units inside the display screen, and in some embodiments, the other driving chips or processing units inside the display screen can be integrated with the DDIC, and in other embodiments, the DDIC can be independent of the other driving chips or processing units inside the display screen.

[0216] The "drawing" and "fusion" in the present application can also be replaced by "generating", "obtaining", "determining", and the description of the present application is only an example and should not be construed as limiting.

[0217] One or more of the above modules or units can be implemented in software, hardware, or a combination of both.

[0218] When any of the above modules or units are implemented in software, the software is in the form of computer program instructions and is stored in a memory. A processor can be configured to execute the program instructions to implement the above method procedures. The processor can include, but is not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), an artificial intelligence processor, or any other type of processing device that is capable of executing software instructions. Each of these processing devices can include one or more cores for executing software instructions to perform operations or processes. The processor can be a separate semiconductor chip, or can be integrated with other circuits to form a semiconductor chip, such as a SoC (System on Chip) that includes other circuits such as coding and decoding circuits, hardware acceleration circuits, or various bus and interface circuits, or can be integrated as a built-in processor in an ASIC (Application Specific Integrated Circuit). The ASIC that integrates the processor can be packaged separately or can be packaged together with other circuits. In addition to the cores for executing software instructions to perform operations or processes, the processor can further include necessary hardware accelerators, such as a field programmable gate array (FPGA), a PLD (Programmable Logic Device), or a logic circuit that implements a special logic operation.

[0219] When any of the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a DSP, an MCU, an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator, or a non-integrated discrete device, which can execute necessary software or be independent of software to perform the above method procedures.

Claims

1. An electronic device, comprising: The display panel is configured to display a first image. The AP is configured to send first indication information and a first parameter to the DDIC. The DDIC is configured to control a brightness of a fingerprint identification region in the first image to be a first brightness and control a brightness of a mask region in the first image to be a second brightness based on the received first indication information, the brightness of the mask region being controlled based on the first parameter, the mask region being a region other than the fingerprint identification region in the first image. The display panel is configured to display an updated first image, including that when the display panel displays the updated first image, a dimming mode of the display screen is direct current adjustment (DC), the first parameter is an alpha value determined according to a dimming mode of the display screen when the display panel displays the first image and a gray scale of the mask region, and when the dimming mode of the display screen is pulse width modulation (PWM) when the display panel displays the first image, the first parameter is less than 1; and when the dimming mode of the display screen is DC when the display panel displays the first image, the first parameter is equal to 1. The brightness of the fingerprint identification region in the updated first image is the first brightness, and the brightness of the mask region in the updated first image is the second brightness. The DDIC controls the brightness of the fingerprint identification region in the first image to be the first brightness, including setting a gray scale of pixels in the fingerprint identification region to a first value and setting a display brightness value (DBV) to a second value, the gray scale of pixels in the display panel being less than or equal to the first value, the DBV of pixels in the display panel being less than or equal to the second value, the first brightness corresponding to the first value of the gray scale and the second value of the DBV.

2. The electronic device of claim 1, wherein, The AP is further configured to send a brightness code of the fingerprint identification region to the DDIC, the brightness code being used to indicate at least one of brightness, color, shape, size, and position.

3. The electronic device of claim 1, wherein, The DDIC controls the brightness of the fingerprint identification region in the first image to be the first brightness, including controlling display of the fingerprint identification region in the first image based on the received brightness code. The brightness of the fingerprint identification region in the updated first image is greater than the brightness of the fingerprint identification region in the first image.

4. The electronic device of claim 1, wherein, The brightness and display content of the mask region in the updated first image are the same as the brightness and display content of the mask region in the first image. When the display panel displays the first image, the dimming mode of the display screen is PWM, and the gray scale of the mask region is a first gray scale.

5. The electronic device of any of claims 1-4, wherein, The DDIC is further configured to switch the dimming mode of the display screen to DC based on the received first indication information. ​ The DDIC controls the brightness of the mask area in the display panel, including: multiplying the second gray scale corresponding to the mask area after the dimming mode of the display screen is switched to DC by the first parameter, the second gray scale being higher than the first gray scale; When the display panel displays the updated first image, the gray scale of the mask area is the first gray scale obtained by multiplying the second gray scale by the first parameter, and the gray scale corresponding to the second brightness is the first gray scale.

6. The electronic device of any of claims 1-4, wherein, The fingerprint recognition area includes a first fingerprint recognition area and a second fingerprint recognition area, and the DDIC includes a first DDIC and a second DDIC; The first DDIC is configured to control the brightness of the first fingerprint recognition area in the first image based on the received first indication information; The second DDIC is configured to control the brightness of the second fingerprint recognition area in the first image based on the received first indication information.

7. A communication device, characterized by The device includes a processor, a memory, and a communication interface, wherein: The processor is configured to determine first indication information and a first parameter; The communication interface is configured to send the first indication information and the first parameter to a display screen, the first indication information being used to indicate the brightness of a fingerprint recognition area and a mask area in a first image displayed by the display screen, the mask area being an area other than the fingerprint recognition area in the first image, and the first parameter being used to control the brightness of the mask area; When the display screen displays an updated first image, the dimming mode of the display screen is direct current regulation DC, and the first parameter is an alpha value determined according to the dimming mode of the display screen when the first image is displayed and the gray scale of the mask area, wherein when a display panel displays the first image, the dimming mode of the display screen is pulse width modulation PWM, and the first parameter is less than 1; when the display panel displays the first image, the dimming mode of the display screen is DC, and the first parameter is equal to 1.

8. The communication apparatus of claim 7, wherein, The processor is further configured to determine a brightness code of the fingerprint recognition area, the brightness code being used to indicate at least one of the following: brightness, color, shape, size, and position; The communication interface is further configured to send the brightness code to the display screen, the brightness code being used to control the display of the fingerprint recognition area in the first image.

9. A communications device, characterized by The device includes a processor, a memory, and a communication interface, wherein: The processor is configured to control a display panel of a display screen to display a first image; The communication interface is configured to receive first indication information and a first parameter, and transmit the first indication information and the first parameter to the processor; The processor is configured to control the brightness of a fingerprint recognition area in the first image to be a first brightness based on the received first indication information, and control the brightness of a mask area in the first image to be a second brightness, the brightness of the mask area being controlled based on the first parameter, the mask area being an area other than the fingerprint recognition area in the first image; The processor is configured to control the display panel to display the updated first image, and the dimming mode of the display screen is DC when the processor controls the display panel to display the updated first image, the first parameter is determined according to the dimming mode of the display screen when the processor controls the display panel of the display screen to display the first image, and the alpha value is determined according to the gray scale of the mask area, wherein the first parameter is less than 1 when the dimming mode of the display screen is PWM when the display panel displays the first image; the first parameter is equal to 1 when the dimming mode of the display screen is DC when the display panel displays the first image. The luminance of the fingerprint recognition area in the updated first image is the first luminance, and the luminance of the mask area is the second luminance.

10. The communication apparatus of claim 9, wherein, The processor controls the luminance of the fingerprint recognition area in the first image to be the first luminance, including: The gray scale of the pixels in the fingerprint recognition area is set to a first value, and the display brightness value DBV is set to a second value, the value of the gray scale of the pixels in the display panel is less than or equal to the first value, the DBV of the pixels in the display panel is less than or equal to the second value, the gray scale corresponding to the first luminance is the first value, and the DBV corresponding to the first luminance is the second value.

11. The communication apparatus of claim 9, wherein, The communication interface is further configured to receive a luminance code of the fingerprint recognition area and transmit the luminance code to the processor, and the luminance code is used to indicate at least one of the following: luminance, color, shape, size, position. The processor controls the luminance of the fingerprint recognition area in the first image to be the first luminance, including: controlling the display of the fingerprint recognition area in the first image based on the received luminance code.

12. The communication apparatus of claim 9, wherein, The luminance of the fingerprint recognition area in the updated first image is greater than the luminance of the fingerprint recognition area in the first image. The luminance and display content of the mask area in the updated first image are the same as the luminance and display content of the mask area in the first image.

13. The communication apparatus of any of claims 9-12, wherein, The processor controls the display panel of the display screen to display the first image, and the dimming mode of the display screen is PWM, and the gray scale of the mask area is a first gray scale. The processor is further configured to switch the dimming mode of the display screen to DC based on the received first indication information. The processor controls the luminance of the mask area in the first image to be the second luminance, including: multiplying the second gray scale corresponding to the mask area after the dimming mode of the display screen is switched to DC by the first parameter, and the second gray scale is higher than the first gray scale; The processor controls the display panel to display the updated first image, and the gray scale of the mask area is the first gray scale obtained by multiplying the second gray scale by the first parameter, and the gray scale corresponding to the second luminance is the first gray scale.

14. A display method characterized by comprising: The method is applied to an electronic device, the electronic device includes an application processor AP and a display screen, the display screen includes a display driving chip DDIC and a display panel, and the method includes: The display panel displays a first image. The display panel displays a first image. The AP sends first indication information and first parameters to the DDIC; The DDIC controls the brightness of the fingerprint recognition region in the first image to be a first brightness and controls the brightness of the mask region in the first image to be a second brightness based on the received first indication information, the brightness of the mask region being controlled based on the first parameters, the mask region being a region other than the fingerprint recognition region in the first image; The display panel displays the updated first image, including: when the display panel displays the updated first image, the dimming mode of the display screen is DC, the first parameters are determined according to the dimming mode of the display screen when the display panel displays the first image, and the alpha value of the gray scale of the mask region, wherein when the display panel displays the first image, the dimming mode of the display screen is PWM, and the first parameters are less than 1; when the display panel displays the first image, the dimming mode of the display screen is DC, and the first parameters are equal to 1; The brightness of the fingerprint recognition region in the updated first image is the first brightness, and the brightness of the mask region is the second brightness.

15. The method of claim 14, wherein, The control of the brightness of the fingerprint recognition region in the first image to be a first brightness includes setting the gray scale of the pixels in the fingerprint recognition region to a first value and setting the display brightness value DBV to a second value, the gray scale of the pixels in the display panel being less than or equal to the first value, the DBV of the pixels in the display panel being less than or equal to the second value, the first brightness corresponding to the first value of the gray scale and the second value of the DBV.

16. The method of claim 14, wherein, The method further comprises: The AP sends the brightness code of the fingerprint recognition region to the DDIC, the brightness code being used to indicate at least one of the following: brightness, color, shape, size, position; The control of the display of the fingerprint recognition region in the first image includes controlling the display of the fingerprint recognition region in the first image based on the received brightness code.

17. The method of claim 14, wherein, The brightness of the fingerprint recognition region in the updated first image is greater than the brightness of the fingerprint recognition region in the first image; The brightness and display content of the mask region in the updated first image are the same as the brightness and display content of the mask region in the first image.

18. The method of any one of claims 14-17, wherein, When the display panel displays the first image, the dimming mode of the display screen is PWM, and the gray scale of the mask region is a first gray scale; the method further comprises: Switching the dimming mode of the display screen to DC based on the received first indication information; The control of the brightness of the mask region in the display panel includes: The second gray scale of the mask region multiplied by the first parameters after the dimming mode of the display screen is switched to DC, the second gray scale being higher than the first gray scale; When the display panel displays the updated first image, a gray scale of the mask area is the first gray scale multiplied by the second gray scale multiplied by the first parameter, and a gray scale corresponding to the second brightness is the first gray scale.

19. The method of claim 14, wherein, The fingerprint recognition area includes a first fingerprint recognition area and a second fingerprint recognition area, and the DDIC includes a first DDIC and a second DDIC. The DDIC controls brightness of the fingerprint recognition area in the first image to be a first brightness based on the received first indication information, including: The first DDIC controls brightness of the first fingerprint recognition area in the first image based on the received first indication information, and the second DDIC controls brightness of the second fingerprint recognition area in the first image based on the received first indication information.

20. A computer storage medium, comprising, The computer storage medium stores a computer program, and the computer program is executed by a processor to implement the method in any one of claims 14-19.

Images