Display control method and device and storage medium

Abstract

The invention provides a display control method and device and a storage medium, and relates to the technical field of terminals. The method comprises the steps that the electronic equipment controls a display screen to be powered on in response to an operation of triggering the electronic equipment to turn on the screen, and controls a screen protection function of the electronic equipment to be turned off, and the screen protection function is used for controlling the screen to be powered off when the display screen leaks electricity. After the screen protection function is turned off, the display screen can be normally turned on no matter whether the display screen leaks electricity or not. Since the screen protection function is turned off in advance, the electronic equipment does not trigger the screen protection function when the electric leakage of the display screen occurs, the blank screen of the equipment can be avoided, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to display control methods, devices and storage media. Background Technology

[0002] A display screen, also known as a display panel or screen, is a common component in electronic devices used to display images, videos, and other media. A display screen includes a display panel, which can be, for example, an Organic Light-Emitting Diode (OLED) display panel.

[0003] Currently, the quality of displays used in electronic devices varies greatly. If the display is leaking electricity when a user triggers the screen to turn on the electronic device, a black screen will occur, affecting the user experience. Summary of the Invention

[0004] This application provides a display control method, device, and storage medium, which are applied in the field of terminal technology and can avoid the problem of electronic devices going black due to screen leakage.

[0005] In a first aspect, embodiments of this application propose a display control method, which can be applied to electronic devices with display functions, such as the first electronic device and the second electronic device described below.

[0006] The first electronic device performs the following: In response to the operation that triggers the first electronic device to light up its screen, the first electronic device controls the first display screen of the first electronic device to power on; if the first display screen leaks current, the first display screen goes black.

[0007] The operation that triggers the first electronic device to light up its screen can be a user pressing the power button or touching the first display screen. In response to this operation, the first electronic device controls the first display screen to power on. Controlling the first display screen to power on can refer to controlling the display panel within the first display screen to power on. For example, see [reference needed]. Figure 7 The power management chip of the first electronic device (i.e., the first power management chip) controls the power-on of the AVDD, ELVDD and ELVSS terminals of the display panel in the first display screen.

[0008] After the first display screen is powered on, if the first electronic device detects a leakage current in the first display screen, the first electronic device will control the first display screen to power off, and the first display screen will go black. See details for further information. Figure 5 Example.

[0009] In some embodiments, the first electronic device detecting leakage current in the first display screen may be achieved through a first power management chip detecting leakage current in the first display screen. Whether the first display screen is leaking current can be determined by detecting the ELVSS terminal of the display panel (i.e., the first display panel) of the first display screen. For example, refer to... Figure 2In (b), if after the first display screen is powered on, it is detected that the ELVSS terminal signal of the first display panel is pulled up by 0.2V before it drops, it indicates that the first display screen is leaking current.

[0010] The reasons for the first display screen going black include: after detecting leakage current in the first display screen, the first power management chip activates the screen protection function, triggering the first display screen to power down. The screen protection function is a preset function of the first power management chip and cannot be modified by the device manufacturer. In some embodiments, the screen protection function can also be described as a leakage current protection function.

[0011] To prevent the aforementioned devices from going black, it's possible to consider disabling the screen saver function through software control of the power management chip. The following section uses a second electronic device as the implementing entity to improve the display control scheme.

[0012] The second electronic device performs the following actions in response to an operation that triggers the screen to light up: The second electronic device controls the power-on of its second display screen and controls the screen saver function to be disabled; after the screen saver function is disabled, if the second display screen leaks current, the second display screen lights up. The screen saver function is used to control the power-off of the second display screen when it leaks current.

[0013] The operation that triggers the second electronic device can be a user pressing a power button or touching the second display screen. In response to this operation, the second electronic device controls the second display screen to power on. Controlling the power on the second display screen can refer to controlling the power on the display panel (i.e., the second display panel) within the second display screen. For example, see [reference needed]. Figure 7 The power management chip of the second electronic device (i.e., the second power management chip) controls the power-on of the AVDD, ELVDD and ELVSS terminals of the second display panel.

[0014] After the second display screen is powered on, the second electronic device controls the screen saver function of the second electronic device to be turned off, specifically, it controls the screen saver function of the second power management chip to be turned off. The screen saver function of the second power management chip can be triggered when the second electronic device detects a leakage current in the second display screen; that is, when the second display screen leaks current, the second electronic device activates the screen saver function and controls the second display screen to power down. In this way, even if the second electronic device detects a leakage current in the second display screen, it will not activate the screen saver function, and the second display screen will remain powered on and normally lit. See [link / reference] for details. Figure 7 Example. The above display control can prevent electronic devices from going black due to screen leakage, thus improving the user experience.

[0015] It should be noted that leakage current in electronic device displays usually does not affect the normal use of the device. Therefore, the screen protection function can be turned off through the above display control to avoid user perception and a poor user experience.

[0016] One possible implementation is that the second electronic device includes a second power management chip, a second display driver, and a second power management chip.

[0017] The second electronic device controls the second display screen of the second electronic device to power on and controls the screen protection function of the second electronic device to be turned off, including: the second power management chip of the second electronic device sends a first message to the second display driver to instruct the second display driver to control the second display screen to power on; after the second display screen is powered on, the second display driver controls the screen protection function of the second power management chip to be turned off.

[0018] One possible implementation involves the second display driver controlling the power-on of the second display screen, comprising: the second display driver sending a first control command to the second power management chip through the second display driver chip of the second electronic device; and the second power management chip controlling the power-on of the second display screen based on the first control command.

[0019] The process of the second display driver controlling the power-on of the second display screen can be referred to... Figure 6 S101 to S104 of the embodiment. Specifically, the second electronic device sends a first message to the second display driver, the first message being used to instruct the second display screen to be activated. Based on the first message, the second display driver sends a first control command to the display driver chip of the second display screen to instruct the second display panel to power on. The second display driver chip sends the first control command to the second power management chip, so that the second power management chip controls the second display panel to power on based on the first control command.

[0020] After the second display screen is powered on, regardless of whether the second display screen is leaking current, the second display driver controls the screen protection function of the second power management chip to be turned off. In this way, even if the second display screen has a leakage current, the second electronic device will not activate the screen protection function, that is, the device will not go black due to the second display screen being powered off because of the leakage current.

[0021] One possible implementation involves the second display driver controlling the screen saver function of the second power management chip to be turned off, including: the second display driver sending a second control command to the second power management chip through the second display driver chip; and the second power management chip turning off the screen saver function based on the second control command.

[0022] The procedure for disabling the screen saver function via the second display driver can be found here. Figure 6S201 to S203 of the embodiment. Specifically, after the second display screen is powered on, the second display driver sends a second control command to the second display driver chip. The second control command is used to instruct the screen protection function of the second power management chip to be turned off. The second display driver chip sends the second control command to the second power management chip, so that the second power management chip turns off its screen protection function based on the second control command, thereby avoiding the second electronic device from going black due to possible screen leakage.

[0023] In one possible implementation, the second display screen further includes a second display panel. The second power management chip, based on a second control command, disables the screen saver function, including: the second power management chip sending a first signal to the second display panel based on the second control command, the first signal indicating that the screen saver function is disabled.

[0024] For example, refer to Figure 7 The second power management chip instructs itself to disable its screen saver function by sending a first signal to the AVDD terminal of the second display panel. The waveform of the first signal can be found in the diagram. Figure 8 The pulse signal 3 is shown in (b).

[0025] The second power management chip disables its screen protection function based on the second control command issued by the second display driver. This second control command is a newly added control command. Through the software-level control command, the screen protection function of the second electronic device can be prevented from being activated due to screen leakage, thereby preventing the display screen of the second electronic device from being powered down.

[0026] One possible implementation is that the second power management chip controls the second display screen to power on based on the first control command, including: the second power management chip sending a second signal to the second display panel of the second electronic device based on the first control command to control the second display screen to power on; the second signal is a power supply signal.

[0027] For example, refer to Figure 7 The second power management chip, based on the first control command, sends a second signal to the AVDD, ELVDD, and ELVSS terminals of the second display panel to enable them. Taking the AVDD terminal as an example, refer to... Figure 8 In (b), the second power management chip sends a pulse signal 1 to the AVDD terminal of the second display panel based on the first control command, thereby enabling the AVDD terminal.

[0028] One possible implementation includes, after the second display screen is turned on, the function of controlling the screen to quickly power off is also included.

[0029] The quick power-off function refers to the electronic device quickly powering off its display screen after the screen is turned on and the user presses the power button again to lock the screen.

[0030] Reference Figure 8 In the relevant display control scheme (a), taking the aforementioned first electronic device as an example, when the first display screen of the first electronic device is powered on, the first power management chip of the first electronic device sends a pulse signal 1 to the AVDD terminal of the first display panel to enable the AVDD terminal of the first display panel. After the pulse signal 1, the first power management chip also sends a pulse signal 2 to the AVDD terminal of the first display panel, and the pulse signal 2 sent by the first power management chip before the first display screen lights up is used to indicate the activation of the screen fast power-down function.

[0031] Reference Figure 8 In the display control scheme of this application, when the second display screen of the second electronic device is powered on, the second power management chip of the second electronic device sends a pulse signal 1 to the AVDD terminal of the second display panel to enable the AVDD terminal of the second display panel. After the second display screen lights up, the second power management chip sends a pulse signal 2 to the AVDD terminal of the second display panel to indicate that the screen fast power-down function is enabled.

[0032] By detecting the timing relationship between the screen lighting and the transmission of pulse signal 2, it can be determined whether the display control scheme proposed in this application should be adopted.

[0033] One possible implementation involves the second electronic device controlling the activation of the screen fast power-down function, including: the second power management chip of the second electronic device sending a third signal to the second display panel, the third signal being used to indicate that the screen fast power-down function is activated.

[0034] Reference Figure 8 In (b), the second power management chip sends pulse signal 2 to the AVDD terminal of the second display panel to indicate that the screen fast power-down function is enabled.

[0035] Secondly, embodiments of this application provide a display control device, which can be an electronic device, or a chip or chip system within an electronic device. The display control device may include a display unit and a processing unit. When the display control device is an electronic device, the display unit may be a display screen. The display unit is used to perform display steps to enable the electronic device to implement the display control method described in the first aspect or any possible implementation of the first aspect. When the display control device is an electronic device, the processing unit may be a processor. The display processing device may further include a storage unit, which may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to enable the electronic device to implement the display control method described in the first aspect or any possible implementation of the first aspect. When the display control device is a chip or chip system within an electronic device, the processing unit may be a processor. The processing unit executes the instructions stored in the storage unit to enable the electronic device to implement the display control method described in the first aspect or any possible implementation of the first aspect. The storage unit may be a storage unit within the chip (e.g., a register, cache, etc.), or a storage unit located outside the chip within the electronic device (e.g., a read-only memory, random access memory, etc.).

[0036] Thirdly, embodiments of this application provide an electronic device, including: a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, causing the electronic device to perform the method described in the first aspect or any possible implementation of the first aspect.

[0037] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in the first aspect or any possible implementation thereof.

[0038] Fifthly, this application provides a chip or chip system including at least one processor and a communication interface. The communication interface and the at least one processor are interconnected via a circuit. The at least one processor is used to run computer programs or instructions to perform the methods described in the first aspect or any possible implementation thereof. The communication interface in the chip can be an input / output interface, pins, or circuits, etc.

[0039] In one possible implementation, the chip or chip system described above in this application further includes at least one memory storing instructions. The memory can be an internal storage unit of the chip, such as a register or cache, or it can be a storage unit of the chip itself (e.g., read-only memory, random access memory, etc.).

[0040] In a sixth aspect, embodiments of this application provide a computer program product, including: a computer program that, when run, causes a computer to perform the methods described in the first aspect or any possible implementation thereof.

[0041] It should be understood that the second to sixth aspects of this application correspond to the technical solutions of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0042] Figure 1 A test scenario diagram of the electronic device provided in the embodiments of this application;

[0043] Figure 2 This is a waveform diagram of the display screen of the test electronic device provided in an embodiment of this application;

[0044] Figure 3 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application;

[0045] Figure 4 A schematic diagram illustrating the software structure and its relationship with the hardware layer of the electronic device provided in the embodiments of this application;

[0046] Figure 5 A flowchart illustrating the display control method provided in an embodiment of this application;

[0047] Figure 6 A flowchart illustrating the display control method provided in an embodiment of this application;

[0048] Figure 7 This is a schematic diagram illustrating the connection between the display screen and the power management chip in an electronic device provided in an embodiment of this application.

[0049] Figure 8 This is a waveform diagram of the display screen of the test electronic device provided in an embodiment of this application;

[0050] Figure 9 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application;

[0051] Figure 10 This is a schematic diagram of the chip structure provided in an embodiment of this application. Detailed Implementation

[0052] To facilitate a clear description of the technical solutions in the embodiments of this application, some terms and technologies involved in the embodiments of this application will be briefly introduced below:

[0053] 1. Screen on, screen off, and screen away

[0054] Screen on is a normal operating state of the display screen, in which the screen displays content. In the embodiments of this application, when the electronic device is powered on or the user triggers the screen to turn on, the state in which the display screen displays content after power-on is called screen on, for example, displaying the startup screen after power-on.

[0055] A black screen is an abnormal state of a display, usually referring to a screen turning black due to some reason. There are several reasons for a black screen: one is a software or system problem, such as software malfunction, system crash, or application conflict, which may cause a black screen while other components of the electronic device (such as the processor) are still running. Another reason is hardware damage, such as a damaged screen or motherboard problem, which may also cause a black screen while other components of the electronic device are still running, but the display cannot show anything. Yet another reason is a depleted battery, in which case the entire electronic device stops working.

[0056] In this embodiment, a black screen refers to a screen going black due to power loss triggered by screen leakage. In some embodiments, power loss can also be described as power loss of the display panel.

[0057] Screen-off mode refers to the automatic shutdown of the screen display on an electronic device when it is idle, entering a low-power state to reduce power consumption and protect privacy. Normally, the backlight of the electronic device's display is off in screen-off mode. In some scenarios, the display can show some basic information (such as time, date, etc.) without completely turning off the screen; this state is called screen-off display. Regardless of the scenario, when an electronic device is in screen-off mode (or screen-off display), the user can turn it on by pressing the power button or touching the display.

[0058] 2. Dump mode is a special mode that an electronic device automatically enters when it experiences an unexpected crash, abnormal program execution, or operating system error. In this mode, the electronic device generates a dump file, which testers can use to locate problems and fix vulnerabilities. In this embodiment, if the electronic device's display screen leaks current after power-on, the electronic device will enter dump mode, during which the display screen will go black.

[0059] 3. Other terms

[0060] In the embodiments of this application, terms such as "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. For example, the first control instruction and the second control instruction are only used to distinguish different control instructions and do not limit their order. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that terms such as "first" and "second" do not necessarily imply that they are different.

[0061] It should be noted that, in the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0062] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, a--c, bc, or abc, where a, b, and c can be single or multiple.

[0063] 4. Electronic equipment

[0064] The electronic devices in this application embodiment may include handheld devices with display functions, vehicle-mounted devices, etc. For example, some electronic devices include: mobile phones, tablets, PDAs, laptops, mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, terminal devices in 5G networks, or terminal devices in future evolved public land mobile networks (PLMNs), etc., and the embodiments of this application are not limited to these.

[0065] By way of example and not limitation, in this embodiment, the electronic device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0066] Furthermore, in this embodiment of the application, the electronic device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0067] The electronic devices in the embodiments of this application may also be referred to as: terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0068] In this embodiment, the electronic device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a display screen, a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows.

[0069] The display screen is a key interactive component of electronic devices, used to display images, text, videos, and other information. The performance and quality of the display screen directly impact the user experience. Therefore, before leaving the factory, electronic devices should undergo display screen performance testing to prevent devices with poor display performance from entering the market.

[0070] Figure 1 This is a test scenario diagram of the electronic device provided in an embodiment of this application. For example... Figure 1 As shown, this scenario includes electronic equipment and signal monitoring equipment. The electronic equipment includes a display screen and a power management IC (PMIC), which provides stable voltage and current to the display screen. The display screen has three terminals, which are... Figure 1 The SOURCE, ELVDD, and ELVSS terminals are connected to the power management chip and are controlled by the power management chip.

[0071] When an electronic device is powered on or the user triggers the screen to light up, the device uses a power management chip to do so. During this process, if there is no leakage current in the display, it will light up normally; otherwise, a black screen will appear, meaning the display will not light up properly.

[0072] The signal detection equipment can be an oscilloscope. Testers can read the waveforms of the three terminals of the electronic device's display screen from the signal detection equipment and determine the cause of the black screen based on the waveforms, such as leakage current in the display screen.

[0073] Figure 2 This is a waveform diagram of the test electronic device display screen provided in an embodiment of this application. When the electronic device is powered on, or when the user triggers the screen to light up, the power management chip triggers the display screen ELVDD to power on (at time t1), as shown below. Figure 2 As shown in (a), if the display screen is normally lit, at time t2, the SOURCE terminal signal rapidly changes from a high level (a relatively high voltage value) to a low level (a relatively low voltage value), and the ELVSS terminal signal also rapidly changes from a high level to a low level. Figure 2 As shown in (b), if the display screen leaks current, at time t2, the ELVSS terminal signal will increase by approximately 0.2V from the aforementioned high level, then change to approximately 0.2V lower than the aforementioned low level, and then change back to the aforementioned low level, while the SOURCE terminal signal remains the same. Figure 2 (a)

[0074] Testers, in conjunction with the power management chip supplier, analyzed the data and found that if the power management chip detects that the ELVSS terminal signal is pulled up by 0.2V before it drops, it indicates that current is flowing through the display screen, meaning that the display screen is leaking current. In response, the power management chip activates the screen protection function, which will trigger the display screen to power down. The electronic device will then enter dump mode, causing the display screen to fail to light up normally.

[0075] It should be noted that the screen saver function of the power management chip is a built-in function of the power management chip, and device manufacturers using this power management chip cannot modify it.

[0076] In some embodiments, the screen saver function can also be described as a leakage current protection function. When the power management chip activates the screen saver function and triggers the display to power down, the power management chip can provide a brief power supply to the SSD (solid state drive) through a built-in capacitor, allowing the SSD sufficient time to safely write the display-related data into the NAND Flash storage medium.

[0077] Currently, display leakage is a common problem among display suppliers. Display leakage triggers the power management chip to activate the screen saver function, causing the electronic device to enter dump mode and the display screen to go black. For this issue, current technologies cannot resolve the problem of electronic devices entering dump mode due to display leakage at the device level.

[0078] In response, this application provides a display control method that avoids the screen protection function of the power management chip from the software level, preventing the power management chip from triggering the display screen to power down because it detects that the ELVSS signal is pulled up by 0.2V before it drops.

[0079] The following describes the electronic device to which the display control method provided in this application is applicable and the specific process of the method, in conjunction with the embodiments.

[0080] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 3 As shown, the electronic device 100 may include: a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, a headphone jack 170D, a sensor 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, etc.

[0081] It is understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device 100.

[0082] In other embodiments of this application, the electronic device 100 may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0083] Processor 110 may include one or more processing units, such as: application processor (AP), modem processor, graphics processing unit (GPU), image signal processor (ISP), controller, memory, video codec, digital signal processor (DSP), baseband processor, and / or neural network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0084] The controller can be the nerve center and command center of the electronic device 100. The controller can generate operation control signals according to the instruction opcode and timing signals to complete the control of fetching and executing instructions.

[0085] The processor 110 may also include a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. This memory can store instructions or data that the processor 110 has just used or that are used repeatedly. If the processor 110 needs to use the instruction or data again, it can retrieve it directly from the memory. This avoids repeated accesses, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0086] Electronic device 100 implements display functions through a GPU, a display screen 194, and an application processor. 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 and for graphics rendering. Processor 110 may include one or more GPUs, which execute program instructions to generate or modify display information.

[0087] The display screen 194, also known as a display screen or screen, is used to display images, videos, etc. In this embodiment, the display screen 194 includes a display panel and a display driver IC (DDIC).

[0088] Display panels can be made of liquid crystal display (LCD), organic light-emitting diode (OLED), active-matrix organic light-emitting diode (AMOLED), flexible light-emitting diode (FLED), Mini LED, Micro LED, Micro-OLED, quantum dot light-emitting diodes (QLED), etc.

[0089] The display driver chip is the main control element of the display panel, used to convert electrical signals into visual signals and control the brightness and color of the display panel so that image information is displayed on the screen. In some embodiments, the electronic device 100 may include one or N displays 194, where N is a positive integer greater than 1.

[0090] The software system of electronic device 100 can adopt a layered architecture, event-driven architecture, microkernel architecture, microservice architecture, or cloud architecture. This application embodiment uses the layered architecture Android system as an example to exemplify the software structure of electronic device 100.

[0091] Figure 4 This diagram illustrates the software structure and its relationship to the hardware layers of the electronic device provided in this embodiment. The layered architecture divides the software into several layers, each with a clear role and function. Layers communicate with each other through software interfaces. Figure 4 As shown in the embodiments of this application, the Android system is divided into four layers, from top to bottom: the application layer, the application framework layer, the hardware abstraction layer (HAL), and the kernel layer.

[0092] The application layer may include a series of application packages. These application packages may include applications such as camera, gallery, calendar, call, map, navigation, WLAN, Bluetooth, music, video, and SMS. In this embodiment, as... Figure 4 As shown, the application layer includes the Power Manager Service (PMS), which is the core service in the Android system responsible for power management, managing the device's power status, such as screen on / off and brightness adjustment.

[0093] The application framework layer provides application programming interfaces (APIs) and a programming framework for applications within the application layer. The application framework layer includes predefined functions. It may include a window manager, content provider, view system, phone manager, resource manager, notification manager, etc. In this embodiment, as... Figure 4 As shown, the application framework layer includes Surfaceflinger, which is Android's display engine. It is responsible for managing and rendering graphical windows, displaying application and system interfaces on the screen, and handling screen rotation, resolution adjustment, etc.

[0094] During screen display control, the PMS interacts with SurfaceFlinger. The PMS communicates with SurfaceFlinger by calling native methods to control the screen's on / off state. For example, when the power button triggers the wake-up process, the PMS calls the display HAL through SurfaceFlinger to send an instruction to the display driver (as shown in the first message below) to instruct the display driver to trigger the screen to turn on.

[0095] The hardware abstraction layer (HAL) is an abstract interface for device kernel drivers, used to provide application programming interfaces for accessing the underlying device to higher-level API frameworks. In this embodiment, as... Figure 4 As shown, the Hardware Abstraction Layer (HAL) includes a Display HAL, which provides a unified interface for managing and controlling the display screen. For example, when the power button triggers the wake-up process, the Display HAL receives an instruction from the upper-layer PMS (as described in the first message below) and sends this instruction to the display driver to instruct the display driver to start the display screen. In some embodiments, the Hardware Abstraction Layer may also include an Audio HAL, a Camera HAL, etc.

[0096] The kernel layer is the layer between hardware and software. In this embodiment, as shown... Figure 4 As shown, the kernel layer includes a display driver, which is used to drive the display screen to operate. In some embodiments, the kernel layer may also include a camera driver, an audio driver, a sensor driver, etc.

[0097] In the embodiments of this application, such as Figure 4 As shown, the hardware layer includes a display screen and a power management chip. The display screen includes a display driver chip and a display panel. In some embodiments, the hardware layer also includes a camera, a speaker, sensors, etc.

[0098] The following will be based on having Figure 4 Taking the electronic device with the structure shown as an example, combined with the attached... Figure 5The process by which the display control method provided in the embodiments of this application causes the display screen to go black is described.

[0099] Figure 5 This is a flowchart illustrating the display control method provided in an embodiment of this application, as shown below. Figure 5 As shown, the display control method may include:

[0100] S101. In response to a user power-on or touchscreen operation, the power management system of the electronic device sends a first message to the display driver, the first message being used to instruct the display screen to be turned on.

[0101] In some embodiments, when the electronic device is not powered on, in response to the user pressing and holding the power button of the electronic device, the power management system of the electronic device sends a first message to the display driver.

[0102] In some embodiments, when the electronic device is powered on and in a screen-off state, in response to the user's tapping of the display screen, the power management system of the electronic device sends a first message to the display driver.

[0103] In some embodiments, refer to Figure 4 In response to a user's power-on or touchscreen operation, the electronic device's power management system sends a first message to SurfaceFlinger in the application framework layer. SurfaceFlinger then sends a first message to the display driver in the kernel layer via the display HAL to instruct the display to be turned on.

[0104] S102. Based on the first message, the display driver sends a first control instruction to the display driver chip. The first control instruction is used to instruct the display panel to be powered on (or the display screen to be powered on).

[0105] Reference Figure 4 It is known that the display screen includes a display driver chip and a display panel. After receiving the first message, the display driver sends a first control command to the display driver chip to instruct the display panel to be powered on.

[0106] S103. The display driver chip sends the first control command to the power management chip.

[0107] S104. The power management chip controls the display panel to power on based on the first control command.

[0108] After receiving the first control command, the display driver chip forwards the first control command to the power management chip, so that the power management chip supplies power to the display panel based on the first control command.

[0109] In some embodiments, after receiving a first control command, the power management chip transmits power supply signals to the ELVDD and ELVSS terminals on the display panel based on the first control command to control the display panel to power on.

[0110] It's important to note that powering on the display panel and turning on the monitor screen are not the same thing. Powering on the display panel refers to the process of providing power to the display panel. Turning on the monitor screen refers to the process of the monitor displaying content on the screen after receiving a display signal. Therefore, powering on the display panel is a prerequisite for the monitor screen to turn on.

[0111] After the power management chip powers on the display panel, it can monitor the voltage at the ELVSS terminal of the display panel in real time. In some embodiments, if the power management chip detects leakage current in the display panel after powering on, it will activate the screen protection function and execute:

[0112] S105. The power management chip controls the power-off of the display panel (or the display screen).

[0113] In some embodiments, if the voltage at the ELVSS terminal on the display panel is detected to have been pulled high by 0.2V before the voltage drops (see reference...), Figure 2 The detection waveform at the ELVSS terminal shown in (b) indicates that the display panel is leaking current, and the power management chip activates the screen protection function to control the display panel to power down.

[0114] In some embodiments, the power management chip transmits a shutdown signal to the ELVDD and ELVSS terminals on the display panel to control the display panel to power down.

[0115] In the above display control method, during the power-on or screen-on process of the electronic device, due to the screen protection function built into the power management chip, if the power management chip detects leakage current in the display panel after controlling the display panel to power on, the power management chip will activate the screen protection function and control the display panel to power off, resulting in a black screen and affecting the user experience.

[0116] It is understandable that after the power management system controls the display panel to be powered on, if the display panel does not leak current, the power management chip will not activate the screen protection function, thus preventing the device from going black.

[0117] Regarding the aforementioned issue of device black screen, this application proposes a display control method. Considering that the power management chip of the electronic device triggers the power-on of the display panel based on the control command of the display driver (i.e., the first control command mentioned above), after the display panel is powered on, the display driver can be configured to send an additional control command to the power management chip (i.e., the second control command mentioned below) to instruct the power management chip to turn off the screen saver function. In this way, the power management chip will not control the display panel to power off after triggering the power-on of the display panel, thus causing the device to black screen.

[0118] The following will be based on having Figure 4 Taking the electronic device with the structure shown as an example, combined with the attached... Figure 6 This paper describes the process by which the display control method provided in the embodiments of this application enables the display screen to light up normally.

[0119] Figure 6 This is a flowchart illustrating the display control method provided in an embodiment of this application, as shown below. Figure 6 As shown, the display control method may include:

[0120] S101. In response to a user power-on or touchscreen operation, the power management system of the electronic device sends a first message to the display driver, the first message being used to instruct the display screen to be turned on.

[0121] S102. Based on the first message, the display driver sends a first control command to the display driver chip, the first control command being used to instruct the display panel to be powered on.

[0122] S103. The display driver chip sends the first control command to the power management chip.

[0123] S104. The power management chip controls the display panel to power on based on the first control command.

[0124] S101 to S104 of this embodiment are the same Figure 5 For specific examples, please refer to the above text; they will not be repeated here.

[0125] In this embodiment, after S102, the following is also executed:

[0126] S201. The display driver sends a second control command to the display driver chip, the second control command being used to instruct the power management chip to disable its screen saver function.

[0127] In this embodiment, after the display driver sends a first control command to the display driver chip, it sends a second control command to the display driver chip to cause the power management chip to turn off the screen saver function.

[0128] The display driver can disable the screen protection function of the power management chip by issuing a new second control command, which can prevent the device from failing to light up normally due to leakage current in the display panel.

[0129] S202. The display driver chip sends a second control command to the power management chip.

[0130] S203. The power management chip disables the screen saver function based on the second control command.

[0131] It is understandable that after the power management chip disables the screen saver function based on the second control command, even if the power management chip detects leakage current in the display panel, it will not activate the screen saver function, resulting in the device going black.

[0132] In practical applications, leakage current in the display panel does not affect the user's normal use of the device. Therefore, the screen protection function can be turned off by issuing a second control command to prevent the user from noticing the abnormality of the device.

[0133] In the above display control method, during the power-on or screen-on process of the electronic device, after the display driver instructs the display panel to power on, it sends a new control command (i.e., the second control command) to the power management chip. This avoids the power management chip from activating the screen protection function due to detecting screen leakage. The above process is imperceptible to the user, enabling the device to light up the screen normally.

[0134] To better understand the above solution, let's combine it with... Figure 7 and Figure 8 This paper provides a detailed explanation of the interaction between the display screen and the power management chip in electronic devices.

[0135] Figure 7 This is a schematic diagram illustrating the connection between the display screen and the power management chip in an electronic device provided in an embodiment of this application. (Refer to...) Figure 4 The display screen includes a display driver chip and a display panel. For example... Figure 7 As shown, the display driver chip can send control commands to the power management chip. For example, the display driver chip sends a first control command to the power management chip to instruct the display panel to power on. As another example, the display driver chip sends a second control command to the power management chip to instruct it to disable the power management chip's screen saver function.

[0136] The power management chip can control the display panel to power on or off based on control commands sent by the display driver chip. For example, the power management chip can control the display panel to power on based on a first control command sent by the display driver chip. Or, for another example, the power management chip can control the display panel to power off based on a second control command sent by the display driver chip.

[0137] Figure 7The display panel includes ELVDD, ELVSS, SOURCE, and AVDD terminals. After receiving the first control command, the power management chip controls the display panel to power on by transmitting power supply signals to the ELVDD, ELVSS, and AVDD terminals.

[0138] For example, after receiving the first control command, the power management chip transmits a first pulse signal to the AVDD terminal on the display panel, such as... Figure 8 The pulse signal 1 shown is used to control the AVDD terminal to power on (that is, to enable the AVDD terminal). Similarly, the power management chip also transmits pulse signals to the ELVDD and ELVSS terminals on the display panel to control the ELVDD and ELVSS terminals to power on.

[0139] In some embodiments, based on Figure 5 In this embodiment, after the power management chip controls the display panel to power on, it will transmit a second pulse signal to the AVDD terminal on the display panel, such as... Figure 8 Pulse signal 2, shown in (a), is used to indicate the activation of the fast down (FD) function. The purpose of activating the FD function is that, after the display screen is turned on, in response to a screen lock operation, such as when the user presses the power button, the display screen of the electronic device can quickly power down.

[0140] In some embodiments, based on Figure 6 In this embodiment, after the power management chip controls the display panel to power on, it will not directly transmit the second pulse signal to the AVDD terminal on the display panel, but will instead transmit the third pulse signal to the AVDD terminal on the display panel, such as... Figure 8 The pulse signal 3 shown in (b) is used to instruct the power management chip to turn off the screen saver function. Subsequently, after the display screen is turned on, the power management chip transmits the second pulse signal mentioned above to the AVDD terminal on the display panel to instruct the screen fast power-down function to be turned on.

[0141] In some embodiments, the display driver chip can also send display-related data to the display panel so that the display panel can display image information.

[0142] Based on the above embodiments, testers can determine whether to adopt this application by detecting the signal waveform at the AVDD terminal on the display panel. Figure 6 The embodiment provides a display control method. (Refer to...) Figure 8 In section (b), if pulse signal 3 is detected after pulse signal 1 (e.g., pulse signal 1 consists of 2 pulses and pulse signal 3 consists of 25 pulses), and pulse signal 2 is detected after the display screen lights up (e.g., pulse signal 2 consists of 2 pulses), it can be determined that the electronic device uses this application. Figure 6 The display control method provided in the embodiment.

[0143] Based on the foregoing embodiments, this application provides a display control method that can be applied to electronic devices with display functions, such as the first electronic device and the second electronic device described below.

[0144] The first electronic device performs the following: In response to the operation that triggers the first electronic device to light up its screen, the first electronic device controls the first display screen of the first electronic device to power on; if the first display screen leaks current, the first display screen goes black.

[0145] The operation that triggers the first electronic device to light up its screen can be a user pressing the power button or touching the first display screen. In response to this operation, the first electronic device controls the first display screen to power on. Controlling the first display screen to power on can refer to controlling the display panel within the first display screen to power on. For example, see [reference needed]. Figure 7 The power management chip of the first electronic device (i.e., the first power management chip) controls the power-on of the AVDD, ELVDD and ELVSS terminals of the display panel in the first display screen.

[0146] After the first display screen is powered on, if the first electronic device detects a leakage current in the first display screen, the first electronic device will control the first display screen to power off, and the first display screen will go black. See details for further information. Figure 5 Example.

[0147] In some embodiments, the first electronic device detecting leakage current in the first display screen may be achieved through a first power management chip detecting leakage current in the first display screen. Whether the first display screen is leaking current can be determined by detecting the ELVSS terminal of the display panel (i.e., the first display panel) of the first display screen. For example, refer to... Figure 2 In (b), if after the first display screen is powered on, it is detected that the ELVSS terminal signal of the first display panel is pulled up by 0.2V before it drops, it indicates that the first display screen is leaking current.

[0148] The reasons for the first display screen going black include: after detecting leakage current in the first display screen, the first power management chip activates the screen protection function, triggering the first display screen to power down. The screen protection function is a preset function of the first power management chip and cannot be modified by the device manufacturer. In some embodiments, the screen protection function can also be described as a leakage current protection function.

[0149] To prevent the aforementioned devices from going black, it's possible to consider disabling the screen saver function through software control of the power management chip. The following section uses a second electronic device as the implementing entity to improve the display control scheme.

[0150] The second electronic device performs the following actions in response to an operation that triggers the screen to light up: The second electronic device controls the power-on of its second display screen and controls the screen saver function to be disabled; after the screen saver function is disabled, if the second display screen leaks current, the second display screen lights up. The screen saver function is used to control the power-off of the second display screen when it leaks current.

[0151] The operation that triggers the second electronic device can be a user pressing a power button or touching the second display screen. In response to this operation, the second electronic device controls the second display screen to power on. Controlling the power on the second display screen can refer to controlling the power on the display panel (i.e., the second display panel) within the second display screen. For example, see [reference needed]. Figure 7 The power management chip of the second electronic device (i.e., the second power management chip) controls the power-on of the AVDD, ELVDD and ELVSS terminals of the second display panel.

[0152] After the second display screen is powered on, the second electronic device controls the screen saver function of the second electronic device to be turned off, specifically, it controls the screen saver function of the second power management chip to be turned off. The screen saver function of the second power management chip can be triggered when the second electronic device detects a leakage current in the second display screen; that is, when the second display screen leaks current, the second electronic device activates the screen saver function and controls the second display screen to power down. In this way, even if the second electronic device detects a leakage current in the second display screen, it will not activate the screen saver function, and the second display screen will remain powered on and normally lit. See [link / reference] for details. Figure 7 Example. The above display control can prevent electronic devices from going black due to screen leakage, thus improving the user experience.

[0153] It should be noted that leakage current in electronic device displays usually does not affect the normal use of the device. Therefore, the screen protection function can be turned off through the above display control to avoid user perception and a poor user experience.

[0154] One possible implementation is that the second electronic device includes a second power management chip, a second display driver, and a second power management chip.

[0155] The second electronic device controls the second display screen of the second electronic device to power on and controls the screen protection function of the second electronic device to be turned off, including: the second power management chip of the second electronic device sends a first message to the second display driver to instruct the second display driver to control the second display screen to power on; after the second display screen is powered on, the second display driver controls the screen protection function of the second power management chip to be turned off.

[0156] One possible implementation involves the second display driver controlling the power-on of the second display screen, comprising: the second display driver sending a first control command to the second power management chip through the second display driver chip of the second electronic device; and the second power management chip controlling the power-on of the second display screen based on the first control command.

[0157] The process of the second display driver controlling the power-on of the second display screen can be referred to... Figure 6 S101 to S104 of the embodiment. Specifically, the second electronic device sends a first message to the second display driver, the first message being used to instruct the second display screen to be activated. Based on the first message, the second display driver sends a first control command to the display driver chip of the second display screen to instruct the second display panel to power on. The second display driver chip sends the first control command to the second power management chip, so that the second power management chip controls the second display panel to power on based on the first control command.

[0158] After the second display screen is powered on, regardless of whether the second display screen is leaking current, the second display driver controls the screen protection function of the second power management chip to be turned off. In this way, even if the second display screen has a leakage current, the second electronic device will not activate the screen protection function, that is, the device will not go black due to the second display screen being powered off because of the leakage current.

[0159] One possible implementation involves the second display driver controlling the screen saver function of the second power management chip to be turned off, including: the second display driver sending a second control command to the second power management chip through the second display driver chip; and the second power management chip turning off the screen saver function based on the second control command.

[0160] The procedure for disabling the screen saver function via the second display driver can be found here. Figure 6 S201 to S203 of the embodiment. Specifically, after the second display screen is powered on, the second display driver sends a second control command to the second display driver chip. The second control command is used to instruct the screen protection function of the second power management chip to be turned off. The second display driver chip sends the second control command to the second power management chip, so that the second power management chip turns off its screen protection function based on the second control command, thereby avoiding the second electronic device from going black due to possible screen leakage.

[0161] In one possible implementation, the second display screen further includes a second display panel. The second power management chip, based on a second control command, disables the screen saver function, including: the second power management chip sending a first signal to the second display panel based on the second control command, the first signal indicating that the screen saver function is disabled.

[0162] For example, refer to Figure 7The second power management chip instructs itself to disable its screen saver function by sending a first signal to the AVDD terminal of the second display panel. The waveform of the first signal can be found in the diagram. Figure 8 The pulse signal 3 is shown in (b).

[0163] The second power management chip disables its screen protection function based on the second control command issued by the second display driver. This second control command is a newly added control command. Through the software-level control command, the screen protection function of the second electronic device can be prevented from being activated due to screen leakage, thereby preventing the display screen of the second electronic device from being powered down.

[0164] One possible implementation is that the second power management chip controls the second display screen to power on based on the first control command, including: the second power management chip sending a second signal to the second display panel of the second electronic device based on the first control command to control the second display screen to power on; the second signal is a power supply signal.

[0165] For example, refer to Figure 7 The second power management chip, based on the first control command, sends a second signal to the AVDD, ELVDD, and ELVSS terminals of the second display panel to enable them. Taking the AVDD terminal as an example, refer to... Figure 8 In (b), the second power management chip sends a pulse signal 1 to the AVDD terminal of the second display panel based on the first control command, thereby enabling the AVDD terminal.

[0166] One possible implementation includes, after the second display screen is turned on, the function of controlling the screen to quickly power off is also included.

[0167] The quick power-off function refers to the electronic device quickly powering off its display screen after the screen is turned on and the user presses the power button again to lock the screen.

[0168] Reference Figure 8 In the relevant display control scheme (a), taking the aforementioned first electronic device as an example, when the first display screen of the first electronic device is powered on, the first power management chip of the first electronic device sends a pulse signal 1 to the AVDD terminal of the first display panel to enable the AVDD terminal of the first display panel. After the pulse signal 1, the first power management chip also sends a pulse signal 2 to the AVDD terminal of the first display panel, and the pulse signal 2 sent by the first power management chip before the first display screen lights up is used to indicate the activation of the screen fast power-down function.

[0169] Reference Figure 8In the display control scheme of this application, when the second display screen of the second electronic device is powered on, the second power management chip of the second electronic device sends a pulse signal 1 to the AVDD terminal of the second display panel to enable the AVDD terminal of the second display panel. After the second display screen lights up, the second power management chip sends a pulse signal 2 to the AVDD terminal of the second display panel to indicate that the screen fast power-down function is enabled.

[0170] By detecting the timing relationship between the screen lighting and the transmission of pulse signal 2, it can be determined whether the display control scheme proposed in this application should be adopted.

[0171] One possible implementation involves the second electronic device controlling the activation of the screen fast power-down function, including: the second power management chip of the second electronic device sending a third signal to the second display panel, the third signal being used to indicate that the screen fast power-down function is activated.

[0172] Reference Figure 8 In (b), the second power management chip sends pulse signal 2 to the AVDD terminal of the second display panel to indicate that the screen fast power-down function is enabled.

[0173] It should be noted that the module names involved in the embodiments of this application can all be defined as other names, as long as they can achieve the function of each module, and no specific restrictions are placed on the module names.

[0174] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in the embodiments of this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0175] The display control method provided in this application can be applied to electronic devices with display functions. The specific device form of the electronic device can be referred to the above-described related information, and will not be repeated here.

[0176] This application provides an electronic device comprising: a processor and a memory; the memory storing computer-executable instructions; and the processor executing the computer-executable instructions stored in the memory, causing the electronic device to perform the technical solutions described in the above-described method embodiments. Its implementation principle and technical effects are similar to those of the related embodiments described above, and will not be repeated here.

[0177] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 9As shown, the electronic device includes a processor 901, a communication line 904, and at least one communication interface. Figure 9 The example provided uses communication interface 903 as an example.

[0178] The processor 901 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present application.

[0179] Communication line 904 may include circuitry for transmitting information between the aforementioned components.

[0180] The communication interface 903 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, wireless local area networks (WLAN), etc.

[0181] In some embodiments, the electronic device may further include a memory 902.

[0182] The memory 902 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory may exist independently and be connected to the processor via communication line 904. The memory may also be integrated with the processor.

[0183] The memory 902 stores computer execution instructions for implementing the scheme of this application, and the processor 901 controls the execution of these instructions. The processor 901 executes the computer execution instructions stored in the memory 902 to implement the display control method provided in the embodiments of this application.

[0184] The computer execution instructions in the embodiments of this application may also be referred to as application code, and the embodiments of this application do not specifically limit this.

[0185] As an example, processor 901 may include one or more CPUs.

[0186] As an example, an electronic device may include multiple processors. Each processor may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. Here, "processor" can refer to one or more devices, circuits, and / or processing cores used to process data (such as computer program instructions).

[0187] This application provides a chip or chip system. The chip or chip system includes a processor, which calls a computer program in memory to execute the technical solutions in the above embodiments. Its implementation principle and technical effects are similar to the related embodiments described above, and will not be repeated here.

[0188] Figure 10 This is a schematic diagram of a chip structure provided in an embodiment of this application. Figure 10 As shown, chip 1000 includes one or more processors 1020 and communication interface 1030.

[0189] In some embodiments, the memory 1040 stores the following elements: executable modules or data structures, or a subset of executable modules or data structures, or an extended set of executable modules or data structures.

[0190] In this embodiment, memory 1040 may include read-only memory and random access memory, and provides instructions and data to processor 1020. A portion of memory 1040 may also include non-volatile random access memory (NVRAM).

[0191] In this embodiment, the memory 1040, the communication interface 1030, and the memory 1040 are coupled together via a bus system 1010. The bus system 1010 includes a data bus, and may also include a power bus, a control bus, and a status signal bus, etc. For ease of description, in... Figure 10 The general labeled all buses as Bus System 1010.

[0192] The methods described in the embodiments of this application can be applied to, or implemented by, the processor 1020. The processor 1020 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above methods can be completed by integrated logic circuits in the hardware of the processor 1020 or by instructions in software form. The processor 1020 may be a general-purpose processor (e.g., a microprocessor or conventional processor), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gates, transistor logic devices, or discrete hardware components. The processor 1020 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application.

[0193] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, it implements the technical solutions in the above-described method embodiments. Its implementation principle and technical effects are similar to the related embodiments described above, and will not be repeated here.

[0194] The methods described in the above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted on a computer-readable medium. A computer-readable medium can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. A storage medium can be any target medium accessible by a computer.

[0195] In one possible implementation, a computer-readable medium may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage or other magnetic storage devices, or any other medium targeted to carry or to store the required program code in the form of instructions or data structures, and accessible by a computer. Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disks and optical discs include optical discs, laser discs, optical discs, Digital Versatile Discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0196] This application provides a computer program product, which includes a computer program. When the computer program is run, it causes the computer to execute the technical solutions described in the above-described method embodiments. Its implementation principle and technical effects are similar to those of the related embodiments described above, and will not be repeated here.

[0197] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, special-purpose computer, embedded processor, or other programmable device to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0198] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A display control method, characterized in that, include: In response to the operation that triggers the screen of the first electronic device to light up, the first electronic device controls the first display screen of the first electronic device to power on; if the first display screen leaks current, the first display screen goes black. In response to the operation of triggering the second electronic device to turn on the screen, the second electronic device controls the second display screen of the second electronic device to power on and controls the screen saver function of the second electronic device to be turned off; after the screen saver function is turned off, if the second display screen leaks current, the second display screen will turn on. The screen protection function is used to control the second display screen to power down when the second display screen leaks current.

2. The method according to claim 1, characterized in that, The second electronic device includes a second power management chip, a second display driver, and a second power management chip. The second electronic device controls the power-on of the second display screen and controls the screen saver function of the second electronic device to be turned off, including: The second power management chip of the second electronic device sends a first message to the second display driver to instruct the second display driver to control the second display screen to power on; After the second display screen is powered on, the second display driver controls the screen protection function of the second power management chip to be turned off.

3. The method according to claim 2, characterized in that, The second display screen includes a second display driver chip, which controls the screen protection function of the second power management chip to be turned off, including: The second display driver sends a second control command to the second power management chip through the second display driver chip; the second power management chip turns off the screen saver function based on the second control command.

4. The method according to claim 3, characterized in that, The second display screen also includes a second display panel, and the second power management chip, based on the second control command, disables the screen saver function, including: The second power management chip sends a first signal to the second display panel based on the second control command. The first signal is used to indicate that the screen saver function is turned off.

5. The method according to any one of claims 2 to 4, characterized in that, The second display driver controls the power-on of the second display screen, including: The second display driver sends a first control command to the second power management chip through the second display driver chip of the second electronic device; the second power management chip controls the second display screen to power on based on the first control command.

6. The method according to claim 5, characterized in that, The second power management chip controls the second display screen to power on based on the first control command, including: The second power management chip sends a second signal to the second display panel of the second electronic device based on the first control command, so as to control the second display screen to power on; The second signal is a power supply signal.

7. The method according to any one of claims 1 to 6, characterized in that, After the second display screen is turned on, the method further includes: The second electronic device controls the activation of the screen's rapid power-off function.

8. The method according to claim 7, characterized in that, The second electronic device controls the activation of the screen fast power-off function, including: The second power management chip of the second electronic device sends a third signal to the second display panel, which is used to indicate that the screen fast power-down function is enabled.

9. An electronic device, characterized in that, include: Processor and memory; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the electronic device to perform the method as described in any one of claims 1-8.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1-8.

11. A chip system, characterized in that, It includes at least one processor and a communication interface, the communication interface and the at least one processor being interconnected via a line, the at least one processor being configured to run a computer program or instructions to perform the method as described in any one of claims 1-8.

12. A computer program product, characterized in that, Includes a computer program that, when run, causes a computer to perform the method as described in any one of claims 1-8.

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