Voltage regulation method, electronic equipment and related device

Abstract

The invention provides a voltage regulation method, an electronic device and a related device.In the method, after the electronic device is powered on, a first voltage acts on a display screen, so that the display screen can be lightened. When the first voltage is detected to be abnormal, the first adjusting signal can be issued to adjust the first voltage, so that the first voltage acting on the display screen is changed from the second value to the first value, the first voltage can be lowered, the probability that the display screen is burnt due to overlarge voltage is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and in particular to a voltage regulation method, electronic equipment and related devices. Background Technology

[0002] With the rapid development of terminal technology, electronic devices (such as mobile phones and tablets) are being used in an increasing number of scenarios. Among these, the display screen is a crucial component, requiring power to operate. However, electrostatic discharge (ESD) generates instantaneous voltages that can cause errors in the signals transmitted from the system-on-a-chip (SoC) to the display driver chip. This can lead to abnormal power supply from the display driver chip to the power management chip, potentially damaging the transistors in the display and burning out the screen, resulting in a poor user experience. Summary of the Invention

[0003] The voltage regulation method, electronic device, and related apparatus provided in this application can reduce the probability of burning out the display screen due to excessive voltage and improve the user experience.

[0004] In a first aspect, this application provides a voltage regulation method applied to an electronic device, the electronic device including a display screen, the method comprising:

[0005] When the electronic device is powered on, a first voltage is applied to the display screen, wherein the first voltage has a first value;

[0006] When the first voltage applied to the display screen is detected to be a second value, a first adjustment signal is generated, wherein the second value is greater than the first value;

[0007] The first voltage is adjusted based on the first adjustment signal, so that the first voltage acting on the display screen changes from the second value to the first value.

[0008] In the above method, after the electronic device is powered on, a first voltage is applied to the display screen to illuminate it. For example, the first voltage can be considered the voltage required to illuminate the display screen. If an abnormality is detected in the first voltage after the electronic device is powered on, such as the voltage value changing from a first value to a second value, to prevent the display screen from being burned out due to prolonged high voltage, the electronic device can generate a first adjustment signal. Based on this signal, the first voltage is adjusted, causing its value to change from the second value back to the first value. This lowers the first voltage value, bringing the display screen from a high-voltage state back to a normal state, reducing the probability of the display screen burning out due to excessive voltage, and improving the user experience.

[0009] In one possible implementation of the first aspect, generating the first adjustment signal when the first voltage acting on the display screen is detected to be a second value includes:

[0010] When the first voltage applied to the display screen is detected to be a second value, the first adjustment signal is generated every time frame, wherein the time frame is used to indicate the frequency at which the display screen refreshes the displayed image.

[0011] In one possible implementation of the first aspect, adjusting the voltage based on the first adjustment signal, such that the first voltage acting on the display screen changes from the second value to the first value, includes:

[0012] Based on the first adjustment signal, the first voltage is adjusted at intervals of one time frame, so that the first voltage acting on the display screen changes from the second value to the first value.

[0013] In the above method, after the electronic device is powered on, the display screen has brightness. The display screen can refresh the display image based on the received image data, so that the user can see the display image on the bright display screen. Because the display screen refreshes the display image periodically (for example, every time frame), when adjusting the first voltage, the first adjustment signal can be sent according to the same period as the display screen's refresh rate. Thus, the first voltage can be adjusted according to the same period as the display screen's refresh rate. The above method of adjusting the first voltage conforms to the existing pattern of the display screen and can also reduce the impact on the user's use.

[0014] In one possible implementation of the first aspect, the electronic device further includes a power management chip and a display driver chip, the display screen includes a first power interface, and the step of adjusting the first voltage based on the first adjustment signal, such that the first voltage acting on the display screen changes from a second value to the first value, includes:

[0015] The display driver chip adjusts the first voltage supplied to the display screen by the power management chip according to the first adjustment signal, so that the first voltage acting on the display screen through the first power interface changes from the second value to the first value.

[0016] It is understandable that the display screen includes multiple power interfaces, each used to control different voltages applied to the display screen, and each voltage may correspond to different functions. In the above method, the first power interface is used to adjust / receive / input a first voltage, and the first adjustment signal sent is a signal / command specific to the first voltage interface. Because the first voltage can be adjusted specifically, it can be pulled down from a second value to a first value, reducing the probability of the display screen being burned out due to excessive voltage and improving the user experience.

[0017] In one possible implementation of the first aspect, the display screen includes sub-pixel units, and the first voltage includes a voltage applied to the sub-pixel units.

[0018] For example, the subpixel unit includes a diode, such as an organic light-emitting diode (OLED), and the first voltage includes a voltage for driving the subpixel unit to emit light, thereby illuminating the display screen.

[0019] In one possible implementation of the first aspect, the voltage acting on the sub-pixel unit includes one or more of a positive power supply voltage and a negative power supply voltage.

[0020] In the above method, the positive power supply voltage is ELVDD, and the negative power supply voltage is ELVSS. When ELVSS and / or ELVDD are too high, prolonged exposure to such high levels may damage the sub-pixel units. Therefore, it is necessary to promptly lower ELVSS and / or ELVDD using the first adjustment signal to reduce the probability of burning out the display screen due to excessive ELVSS and / or ELVDD, thereby improving the user experience.

[0021] Secondly, an electronic device is provided in the embodiments of this application, the electronic device comprising: one or more processors; a memory; wherein the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the electronic device to perform the voltage regulation method described in the first aspect or any possible implementation of the first aspect.

[0022] Thirdly, 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 execute the voltage regulation method described in the first aspect or any possible implementation of the first aspect. The communication interface in the chip can be an input / output interface, a pin, or a circuit, etc.

[0023] In one possible implementation, the chip or chip system described above in the embodiments of this application further includes at least one memory, which stores 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.).

[0024] Fourthly, embodiments of this application provide a computer storage medium storing a computer program that, when executed by a processor, causes the computer to perform a voltage regulation method as described in the first aspect or any possible implementation thereof.

[0025] Fifthly, embodiments of this application provide a computer program product that, when run on a communication device, causes the communication device to perform a voltage regulation method as described in the first aspect or any possible implementation thereof.

[0026] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0027] The accompanying drawings used in the embodiments of this application are described below.

[0028] Figure 1 This is a schematic diagram of the hardware structure of an electronic device 100 provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the hardware structure of another electronic device 100 provided in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram illustrating a power-on abnormality of a display screen provided in an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the hardware structure of another electronic device 100 provided in the embodiments of this application;

[0032] Figure 5 This is a schematic flowchart of a voltage regulation method provided in an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of a periodic adjustment of a first voltage provided in an embodiment of this application. Detailed Implementation

[0034] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.

[0035] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0036] The electronic device 100 provided in this application embodiment includes a display screen. The electronic device 100 may be, but is not limited to, a mobile phone, tablet computer, handheld computer, desktop computer, laptop computer, ultra-mobile personal computer (UMPC), netbook, cellular phone, personal digital assistant (PDA), and wearable devices such as smart bracelets, smartwatches, and smart glasses; extended reality (XR) devices such as augmented reality (AR), virtual reality (VR), and mixed reality (MR); in-vehicle devices; or smart city devices. This application embodiment does not impose any special restrictions on the specific type of electronic device 100.

[0037] Figure 1 This is a schematic diagram of the hardware structure of an electronic device 100 provided in an embodiment of this application.

[0038] Electronic device 100 may include processor 110, external memory interface 120, internal memory 121, universal serial bus (USB) interface 130, charging management module 140, power management module 141, battery 142, antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194, and subscriber identification module (SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, a barometric pressure sensor 180C, a magnetic sensor 180D, an accelerometer sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc.

[0039] It is understood that the structures illustrated in the embodiments of the present invention do not constitute a specific limitation on the electronic device 100. 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.

[0040] Processor 110 may include one or more processing units, such as application processors (APs), modem processors, graphics processing units (GPUs), image signal processors (ISPs), controllers, video codecs, digital signal processors (DSPs), baseband processors, and / or neural network processing units (NPUs). These different processing units may be independent devices or integrated into one or more processors.

[0041] The controller can generate operation control signals based on the instruction opcode and timing signals to complete the control of instruction fetching and execution.

[0042] 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.

[0043] In some embodiments, the processor 110 may include one or more interfaces. Interfaces may 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 mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0044] The charging management module 140 receives 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 receives charging input from the wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 receives wireless charging input via the wireless charging coil of the electronic device 100. While charging the battery 142, the charging management module 140 can also supply power to the electronic device via the power management module 141.

[0045] The power management module 141 connects the battery 142, the charging management module 140, and the processor 110. The power management module 141 receives input from the battery 142 and / or the charging management module 140, providing power to the processor 110, internal memory 121, display screen 194, camera 193, and wireless communication module 160, etc. The power management module 141 can also monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage current, impedance). In some other embodiments, the power management module 141 may also be located within the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be located in the same device.

[0046] 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.

[0047] Display screen 194 is used to display images, videos, etc. Display screen 194 includes a display panel. The display panel may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a miniature LED, a microLED, a quantum dot light-emitting diode (QLED), etc. In some embodiments, electronic device 100 may include one or N displays 194, where N is a positive integer greater than 1.

[0048] It should be understood that the display screen 194 can also be referred to as a screen or monitor. Optionally, the display screen 194 may also include more components, such as a backlight panel, driving circuitry, etc. The backlight panel can be used to provide a light source, and the display panel can emit light based on the light source provided by the backlight panel. The driving circuitry can be used to control whether the liquid crystal layer is transparent or opaque.

[0049] In this embodiment, the display screen 194 may periodically refresh the display image, that is, refresh the display image once every time frame. The time when the display image is refreshed can be referred to as the refresh time. Optionally, the refresh time is periodic. For example, assuming that the frequency of the display screen 194 is K, the display screen refreshes the display image once every 1 / K time frame, and the interval between two adjacent refresh times is 1 / K. Optionally, the time frame is 1 / K.

[0050] Electronic device 100 can perform shooting functions through ISP, camera 193, video codec, GPU, display 194 and application processor.

[0051] Digital signal processors (DSPs) are used to process digital signals. Besides digital image signals, they can also process other digital signals. For example, when electronic device 100 selects a frequency, the DSP can perform Fourier transforms on the frequency energy.

[0052] Video codecs are used to compress or decompress digital video. Electronic device 100 may support one or more video codecs. Thus, electronic device 100 can play or record videos in various encoding formats, such as Moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

[0053] An NPU (Neural Processing Unit) is a computational processor for neural networks (NNs). By borrowing the structure of biological neural networks, such as the transmission patterns between neurons in the human brain, it can rapidly process input information and continuously learn on its own. NPUs enable intelligent cognitive applications in electronic devices, such as image recognition, facial recognition, speech recognition, and text understanding.

[0054] The external storage 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 storage interface 120 to perform data storage functions. For example, music, video, and other files can be saved on the external memory card.

[0055] Internal memory 121 can be used to store computer executable program code, which includes instructions. Internal memory 121 may include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback, image playback, etc.), etc. The data storage area may store data created during the use of electronic device 100 (such as audio data, phonebook, etc.). Furthermore, internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc. Processor 110 executes various functional applications and data processing of electronic device 100 by running instructions stored in internal memory 121 and / or instructions stored in memory located in the processor.

[0056] Electronic device 100 may include an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, and a headphone jack.

[0057] Pressure sensor 180A is used to sense pressure signals and can convert the pressure signals into electrical signals. In some embodiments, pressure sensor 180A can be disposed on display screen 194. There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, and capacitive pressure sensors. A capacitive pressure sensor may include at least two parallel plates with conductive material. When a force is applied to pressure sensor 180A, the capacitance between the electrodes changes. Electronic device 100 determines the intensity of the pressure based on the change in capacitance. When a touch operation is applied to display screen 194, electronic device 100 detects the intensity of the touch operation based on pressure sensor 180A. Electronic device 100 can also calculate the touch location based on the detection signal from pressure sensor 180A. Proximity light sensor 180G may include, for example, a light-emitting diode (LED) and a photosensor, such as a photodiode. The LED may be an infrared LED. Electronic device 100 emits infrared light outward through the LED. Electronic device 100 uses the photodiode to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it can be determined that there is an object near electronic device 100. When insufficient reflected light is detected, electronic device 100 can determine that there is no object nearby. Ambient light sensor 180L is used to sense ambient light intensity. Fingerprint sensor 180H is used to collect fingerprints. Electronic device 100 can utilize the collected fingerprint characteristics to achieve fingerprint unlocking, access application lock, fingerprint photography, fingerprint answering of calls, etc. Temperature sensor 180J is used to detect temperature. Touch sensor 180K, also called a "touch device," can be located on display screen 194. The touch sensor 180K and display screen 194 together form a touchscreen, also called a "touch screen." Touch sensor 180K is used to detect touch operations applied to or near it. The touch sensor can transmit the detected touch operation to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through display screen 194. In some embodiments, touch sensor 180K can also be located on the surface of electronic device 100, in a different position than display screen 194. Bone conduction sensor 180M can acquire vibration signals.

[0058] Buttons 190 include a power button, volume buttons, etc. A motor 191 can generate vibration feedback. An indicator 192 can be an indicator light, used to indicate charging status, battery level changes, and also to indicate messages, missed calls, notifications, etc. A SIM card interface 195 is used to connect a SIM card.

[0059] Figure 2 This is a schematic diagram of the hardware structure of another electronic device 100 provided in the embodiments of this application.

[0060] like Figure 2As shown, the electronic device 100 may include a system on chip (SoC) 101, a power management integrated circuit (PMIC) 102, a display driver integrated circuit (DDIC) 103, and a display panel 104.

[0061] Display 104 and Figure 1 The display screen 194 is similar. In some embodiments of this application, the display screen 104 may include N pixel units and a first power interface 1041, where N is a positive integer, each pixel unit may include M sub-pixel units, where M is a positive integer, for example, M equals 3, and each sub-pixel unit may include light-emitting diodes, such as including but not limited to OLEDs.

[0062] In this embodiment, the display screen 104 inputs voltage to the pixel unit via a first power interface 1041, optionally inputting voltage to the sub-pixel unit within the pixel unit. Exemplarily, the anode of each sub-pixel unit can be connected to one end of a driving element, and the other end of the driving element can be connected to the emission layer voltage drain (ELVDD). When the voltage input to the sub-pixel unit via the first power interface 1041 acts on the emission layer positive electrode, the emission layer positive electrode generates ELVDD. Optionally, ELVDD can be referred to as the positive power supply voltage. Exemplarily, the cathode of each sub-pixel unit can be connected to the emission layer voltage source series (ELVSS). When the voltage input to the sub-pixel unit via the first power interface 1041 acts on the emission layer negative electrode, the emission layer negative electrode generates ELVSS. Optionally, ELVSS can be referred to as the negative power supply voltage. Optionally, the driving element may include, but is not limited to, thin-film transistors (TFTs) or metal-oxide-semiconductor field-effect transistors (MOSFETs).

[0063] In some embodiments of this application, the voltage input to the negative electrode of the light-emitting layer, which causes the negative electrode of the light-emitting layer to be input to the sub-pixel unit, can be called ELVSS; the voltage input to the positive electrode of the light-emitting layer, which causes the positive electrode of the light-emitting layer to be input to the sub-pixel unit, can be called ELVDD.

[0064] Optionally, ELVDD and ELVSS are voltages used to power on the display 104, and can also be referred to as driving voltages.

[0065] SoC 101 can be used to implement the processing and control procedures of electronic device 100. In some embodiments of this application, SoC 101 can be connected to and communicate with PMIC 102. In some embodiments of this application, SoC 101 can be connected to and communicate with DDIC 103.

[0066] DDIC103 can be used to implement the display control process of electronic device 100. In some embodiments of this application, DDIC103 can be connected to and communicate with PMIC102. In some embodiments of this application, DDIC103 can be connected to and communicate with display screen 104.

[0067] In some examples, DDIC103 can receive data or control signals sent by SoC101 and control PMIC102 to power on display 104 according to the data or control signals sent by SoC101. Optionally, DDIC103 can control PMIC102 to power on sub-pixel units in display 104 according to the data or control signals sent by SoC101.

[0068] In some examples, SoC 101 can send image data to DDIC 103, which in turn sends the image data to display 104, which can then display the image data sent by SoC 101.

[0069] In this embodiment, in response to a user operation (such as touching the power button), the electronic device 100 can control the DDIC 103 to power on the display screen 104 via the SoC 101, so that the DDIC 103 controls the PMIC 102 to power on the display screen 104 through the first power interface 1041 according to the data or control signals sent by the SoC 101. For example, the SoC 101 can send a power-on signal to the DDIC 103, so that the DDIC 103 drives the PMIC 102 to power on the display screen 104 according to the voltage indicated by the power-on signal. Optionally, the DDIC 103 drives the PMIC 102 to output a first voltage to the first power interface 1041 of the display screen according to the voltage indicated by the power-on signal, and applies the first voltage to the sub-pixel units of the display screen 104 through the first power interface 1041, thereby driving the sub-pixel units to work, so as to achieve the purpose of powering on the display screen 104.

[0070] It is understood that the first voltage indicated by the power-on signal sent by SoC 101 is the theoretical power-on voltage (e.g., including but not limited to +6V ELVDD and -6V ELVSS). Optionally, the theoretical power-on voltage is the voltage at which the sub-pixel units in display 104 can operate normally, that is, the theoretical power-on voltage is the maximum voltage that the sub-pixel unit (e.g., a light-emitting diode) can withstand. However, factors such as electrostatic discharge (ESD) may cause the theoretical power-on voltage to become abnormal, meaning that the first voltage indicated by the power-on signal may be abnormal when the electronic device is powered on. Please refer to [link to relevant documentation]. Figure 3 , Figure 3 This is a schematic diagram illustrating a power-on abnormality of a display screen according to an embodiment of this application. Taking the power-on voltages including ELVSS and ELVDD as an example, under the influence of electrostatic interference, combined with... Figure 2 and Figure 3 Let's take a look. Figure 2 The power-on signal sent by the SoC 101 to the DDIC 103 may include, for example, an Eswire signal indicating that the first power interface 1041 receives voltage. For example, the first power interface 1041 specifically includes an Eswire interface. The power-on signal may experience pulse jumps during the process of instructing the PMIC 102 to input voltage to the first power interface 1041. Optionally, the pulse jumps may include positive voltage pulse jumps and negative voltage pulse jumps.

[0071] For example, from Figure 3 It can be seen that a sudden negative voltage pulse may cause the voltage applied to the display screen 104 by the PMIC 102 through the first power interface 1041 by the DDIC 103 according to the power-on signal, thereby causing the ELVSS of the sub-pixel units in the display screen 104 to no longer be the theoretical -6V. Optionally, in the case of a sudden negative voltage pulse in the power-on signal caused by electrostatic interference, the sudden pulse may pull down the ELVSS, resulting in an ELVSS of -6.6V. It can be understood that since the ELVSS is a negative voltage, considering the polarity of the negative voltage, the sudden pulse can be considered to pull down the ELVSS; considering the voltage value but not the polarity of the negative voltage, the sudden pulse will raise the value of the ELVSS.

[0072] For example, from Figure 3It can be seen that a sudden change in the positive voltage pulse may cause the voltage applied to the display screen 104 by the PMIC 102 through the first power interface 1041 by the DDIC 103 according to the power-on signal, thereby causing the ELVDD acting on the sub-pixel unit in the display screen 104 to no longer be the theoretical +6V. Optionally, in the case of a sudden change in the positive voltage pulse caused by electrostatic interference, the sudden change in the pulse may pull up the ELVDD, resulting in an ELVDD of +6.6V.

[0073] like Figure 3 As shown, if the -6.6V ELVSS applied to the sub-pixel unit exceeds a preset time, and / or if the +6.6V ELVDD applied to the sub-pixel unit exceeds a preset time, the sub-pixel unit will fail to function. Taking a light-emitting diode (LED) as an example, as mentioned above, ELVSS acts on the cathode of the LED, and ELVDD acts on the anode. A -6.6V ELVSS or a +6.6V ELVDD will break down the LED, causing damage and ultimately burning it out. Figure 2 The display screen 104 shown is experiencing a black screen issue, causing a poor user experience.

[0074] During the research process, this application discovered that when the display is powered on, the SoC can send a power-on signal to the DDIC, which instructs the DDIC to control the PMIC to power on the display. After the display is powered on, the voltage indicated by the initial power-on signal that lights up the display continues to act on the display. For example, after the display is powered on, since the SoC does not send a new power-on signal to refresh the power-on voltage acting on the display after sending the power-on signal to light up the display, if factors such as electrostatic interference cause a pulse change in the power-on signal, the effect of this pulse change will also continue to act on the display. For example, a negative voltage pulse change in the power-on signal causing ELVSS to be at -6.6 for 26.6 ms can lead to screen burn-in; a positive voltage pulse change in the power-on signal causing ELVDD to be at +6.6 for 26.6 ms can also lead to screen burn-in.

[0075] In view of this, this application proposes a voltage regulation method. When an abnormal power-on voltage is detected, the power-on voltage can be adjusted in each frame by the display driver module, so as to prevent the power-on voltage from being under high voltage for a long time, thereby avoiding the occurrence of screen burn-in problem.

[0076] In some embodiments of this application, an abnormal power-on voltage can be understood as the power-on voltage value not being the theoretical value. For example, if the perceived power-on voltage value is higher than the theoretical power-on voltage value, it indicates that the power-on voltage is abnormal.

[0077] In some embodiments of this application, each frame can be understood as each time frame, that is, the frequency at which the display screen refreshes the displayed image. Optionally, when an abnormal power-on voltage is detected, the power-on voltage is adjusted every time the display screen refreshes the displayed image, so that the power-on voltage tends to the theoretical power-on voltage.

[0078] Please see Figure 4 , Figure 4 This is a schematic diagram of the hardware structure of another electronic device 100 provided in the embodiments of this application. Figure 4 The electronic device 100 shown includes, but is not limited to: SoC 101, PMIC 102, DDIC 103, and display 104. For example, SoC 101 corresponds to... Figure 1 The processor 110 and PMIC 102 shown correspond to... Figure 1 The power management module 141 shown is... Figure 2 The electronic device 100 shown is similar, except that, Figure 4 The DDIC103 in the illustrated electronic device 100 includes a display driver module 1031.

[0079] For example, through the above Figure 2 As described in the text, factors such as electrostatic interference may cause pulse changes in the power-on signal, which in turn may cause the first voltage input by the power-on signal PMIC102 through the first power interface 1041 to the sub-pixel unit in the display screen 104 to become abnormal. When the abnormal voltage lasts for a preset time, it may break down the sub-pixel unit, which may lead to the burning of the display screen and the occurrence of a black screen problem.

[0080] In some embodiments of this application, after the electronic device 100 is powered on, the SoC 101 sends a power-on signal to the DDIC 103. The DDIC 103 controls the PMIC 102 to input a first voltage to the display screen 104 through the first power interface 1041 according to the power-on signal, so that the first voltage can be applied to the display screen 104. Optionally, the first voltage is applied to the sub-pixel units of the display screen 104. The first voltage has a first value.

[0081] For example, after the electronic device 100 is powered on, the display driver module 1031 in DDIC 103 can detect / query the first voltage applied to the display screen 104 by the first power interface 1041 at preset intervals. When the detected / queryed first voltage applied to the display screen is a second value, the display driver module 1031 can generate a first adjustment signal. Wherein, the second value is greater than the first value, indicating that the first voltage is abnormal. Optionally, the display driver module 1031 is a software module running in the kernel driver layer, used to send a signal that can be used to adjust the first power interface 1041 when the power-on voltage (i.e., the first voltage) is abnormal, thereby adjusting the voltage applied to the sub-pixel unit through the first power interface 1041.

[0082] For example, the display driver module 1031 can send a first adjustment signal to the PMIC 102. The PMIC 102 can adjust the first voltage input to the display screen 104 through the first power interface 1041 based on the first adjustment signal, so that the first voltage acting on the display screen 104 changes from a second value to a first value, thereby reducing the probability of the second value of the first voltage acting on the sub-pixel unit for a long time, causing damage to the sub-pixel unit.

[0083] For example, the display screen 194 refreshes the display image periodically, that is, it refreshes the display image once every time frame. Optionally, the display driver module 1031 can send a first adjustment signal to the PMIC 102 according to the refresh period of the display screen 194 (that is, every time frame), thereby adjusting the first voltage based on the first adjustment signal every time frame, so that the first voltage acting on the display screen changes from a second value to a first value.

[0084] In one implementation, if the first abnormal voltage is ELVSS, then the first adjustment signal is used to adjust ELVSS so that ELVSS changes from a second value to a first value, for example, by adjusting ELVSS so that ELVSS changes from -6.6V to -6V.

[0085] In one implementation, if the first abnormal voltage is ELVDD, then the first adjustment signal is used to adjust ELVDD so that ELVDD changes from the second value to the first value, for example, by adjusting ELVDD, ELVDD changes from +6.6V to +6V.

[0086] Please see Figure 5 , Figure 5 This is a schematic flowchart of a voltage regulation method provided in an embodiment of this application. This method can be applied to... Figure 4 The electronic device 100 shown herein includes, but is not limited to, the following steps:

[0087] Step S501: When the electronic device is powered on, a first voltage is applied to the display screen.

[0088] Specifically, after the electronic device detects / receives an operation to turn on the display screen via a sensor or button, it generates a power-on signal / data based on this operation through the SoC and sends the power-on signal / data to the DDIC through a software interface. The DDIC then controls the PMIC to input a first voltage to the display screen through a hardware interface based on the power-on signal / data, thereby turning on the display screen. Optionally, when the electronic device's screen is on, it can display image data on the display screen.

[0089] Furthermore, the devices used for emitting light in the display screen include Figure 4 As shown, a first voltage can be applied to the sub-pixel unit to drive the sub-pixel unit to emit light and thus light up the display screen.

[0090] For example, the first voltage has a first value, which is a theoretical value of the first voltage and can be considered as a value that can be used to light up the sub-pixel unit. Optionally, the first voltage includes ELVSS and ELVDD. For example, when the first voltage is ELVSS, the first voltage includes ELVSS of -6.6V and the first value is 6.6; for example, when the first voltage is ELVDD, the first voltage includes ELVDD of -6.6V and the first value is 6.6.

[0091] Step S502: When the first voltage acting on the display screen is detected to be a second value, a first adjustment signal is generated.

[0092] Specifically, during the process of lighting up the display screen, that is, while the display screen remains lit, if factors such as electrostatic interference cause an abnormality in the first voltage acting on the display screen, for example, if the value of the first voltage is pulled up, optionally, a description of the abnormality of the first voltage can be found in [reference needed]. Figure 3 This will not be elaborated further here. For example, when the electronic device detects that the first voltage applied to the display screen is a second value, it can be determined that the first voltage is abnormal. In order to prevent the abnormal time from being too long, for example, exceeding a preset threshold (26.6ms), the electronic device can generate a first adjustment signal to adjust the first voltage.

[0093] Optionally, if the first abnormal voltage is ELVSS, then the generated first adjustment signal is used to adjust ELVSS.

[0094] Optionally, if the first abnormal voltage is ELVDD, the generated first adjustment signal is used to adjust ELVDD.

[0095] Optionally, the electronic device can issue signals / commands (i.e., the first adjustment signal) at the kernel layer in display driver mode to adjust the first power interface (e.g., the Eswire interface). The kernel layer is the layer between the hardware and software. The kernel layer contains at least a display driver, such as a display driver module.

[0096] Step S503: Adjust the first voltage based on the first adjustment signal, so that the first voltage acting on the display screen changes from the second value to the first value.

[0097] Specifically, the first adjustment signal is used to indicate that the first voltage is adjusted to a first value, so that the electronic device can adjust the first voltage based on the first adjustment signal, so that the first voltage acting on the display screen changes from a second value to a first value.

[0098] For example, the DDIC in the electronic device controls the PMIC to adjust the first voltage input to the display screen through the first power interface according to the first adjustment signal, so that the first voltage acting on the display screen changes from a second value to a first value.

[0099] Optionally, when the first adjustment signal is used to indicate the adjustment of ELVSS, the electronic device adjusts ELVSS based on the first adjustment signal, so that the ELVSS acting on the display screen changes from the second value to the first value, that is, the ELVSS is pulled down from -6.6V to -6V.

[0100] Optionally, when the first adjustment signal is used to indicate the adjustment of ELVDD, the electronic device adjusts ELVDD based on the first adjustment signal, so that the ELVDD acting on the display screen changes from the second value to the first value, that is, the ELVDD is pulled down from +6.6V to +6V.

[0101] Optionally, the electronic device may adjust the first voltage at time intervals based on the first adjustment signal, such that the first voltage applied to the display screen changes from a second value to a first value. See also... Figure 6 , Figure 6 This is a schematic diagram illustrating a periodic adjustment of a first voltage according to an embodiment of this application. Figure 6As shown, after the electronic device is powered on, it can send image data to the DDIC via the SoC, which in turn sends the image data to the display screen. The display screen can then refresh the screen periodically (for example, every time frame) based on the received image data. To match the screen refresh frequency, taking ELVSS as the first voltage as an example, after detecting an ELVSS anomaly, the electronic device can also send a first adjustment signal every time frame, adjusting ELVSS based on the first adjustment signal every time frame, so that ELVSS changes from -6.6V to -6V.

[0102] It should be understood that the steps in the above-described method embodiments provided in this application can be implemented by integrated logic circuits in the processor hardware or by instructions in software form. The method steps disclosed in the embodiments of this application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

[0103] This application also provides an electronic device that may include a memory and a processor. The memory may be used to store a computer program; the processor may be used to invoke the computer program in the memory to cause the electronic device to perform the methods in any of the above embodiments.

[0104] This application also provides a chip system including at least one processor for implementing the functions involved in the methods performed by the electronic device in any of the above embodiments.

[0105] In one possible design, the chip system also includes a memory for storing program instructions and data, which may be located within or outside the processor.

[0106] The chip system can consist of chips or include chips and other discrete components.

[0107] Optionally, the chip system may contain one or more processors. These processors can be implemented in hardware or software. When implemented in hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented in software, the processor can be a general-purpose processor, implemented by reading software code stored in memory.

[0108] Optionally, the chip system may contain one or more memories. The memory may be integrated with the processor or disposed separately from it; this application embodiment does not limit this. For example, the memory may be a non-transient processor, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or disposed separately on different chips. This application embodiment does not specifically limit the type of memory or the arrangement of the memory and processor.

[0109] For example, the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a micro controller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0110] This application also provides a computer program product comprising: a computer program (also referred to as code or instructions) that, when run, causes a computer to perform the method executed by the electronic device in any of the above embodiments.

[0111] This application also provides a computer-readable storage medium storing a computer program (also referred to as code or instructions). When the computer program is run, it causes the computer to perform the method executed by the electronic device in any of the above embodiments.

[0112] The various embodiments of this application can be combined arbitrarily to achieve different technical effects.

[0113] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive).

[0114] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

[0115] In summary, the above description is merely an embodiment of the technical solution of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made according to the disclosure of the present invention should be included within the scope of protection of the present invention.

Claims

1. A voltage regulation method, characterized in that, Applied to an electronic device, the electronic device including a display screen, the method includes: When the electronic device is powered on, a first voltage is applied to the display screen, wherein the first voltage has a first value; When the first voltage applied to the display screen is detected to be a second value, a first adjustment signal is generated, wherein the second value is greater than the first value; The first voltage is adjusted based on the first adjustment signal, so that the first voltage acting on the display screen changes from the second value to the first value.

2. The method according to claim 1, characterized in that, The step of generating a first adjustment signal when the first voltage acting on the display screen is detected to be a second value includes: When the first voltage applied to the display screen is detected to be a second value, the first adjustment signal is generated every time frame, wherein the time frame is used to indicate the frequency at which the display screen refreshes the displayed image.

3. The method according to claim 2, characterized in that, The step of adjusting the voltage based on the first adjustment signal, so that the first voltage acting on the display screen changes from the second value to the first value, includes: Based on the first adjustment signal, the first voltage is adjusted at intervals of one time frame, so that the first voltage acting on the display screen changes from the second value to the first value.

4. The method according to any one of claims 1 to 3, characterized in that, The electronic device further includes a power management chip and a display driver chip. The display screen includes a first power interface. Adjusting the first voltage based on the first adjustment signal, such that the first voltage acting on the display screen changes from a second value to the first value, includes: The display driver chip adjusts the first voltage supplied to the display screen by the power management chip according to the first adjustment signal, so that the first voltage acting on the display screen through the first power interface changes from the second value to the first value.

5. The method according to any one of claims 1 to 4, characterized in that, The display screen includes sub-pixel units, and the first voltage includes a voltage applied to the sub-pixel units.

6. The method according to claim 5, characterized in that, The voltage applied to the sub-pixel unit includes one or more of a positive power supply voltage and a negative power supply voltage.

7. An electronic device, characterized in that, The electronic device includes: one or more processors; a memory; wherein the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the electronic device to perform the method as described in any one of claims 1-6.

8. A chip system, characterized in that, The chip system is applied to an electronic device, the chip system including one or more processors, the processors being used to invoke computer instructions to cause the electronic device to perform the method as described in any one of claims 1-6.

9. A computer program product containing instructions, characterized in that, When the computer program product is run on an electronic device, it causes the electronic device to perform the method as described in any one of claims 1-6.

10. A computer-readable storage medium comprising instructions, characterized in that, When the instructions are executed on an electronic device, the electronic device causes the electronic device to perform the method as described in any one of claims 1-6.

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