Display module, power management chip, electronic device, and power supply method

Abstract

The embodiments of the present application relate to the technical field of chips, and relate to a display module, a power management chip, an electronic device, and a power supply method. The display module may comprise: a display screen and a voltage measurement circuit, wherein the display screen comprises a power supply voltage input end; the voltage measurement circuit comprises a first end and a second end; the first end of the voltage measurement circuit is coupled to the power supply voltage input end of the display screen; and the voltage measurement circuit is configured to collect, by means of the first end, a power supply voltage received by the power supply voltage input end, and output voltage measurement information by means of the second end. In this way, the stability of the voltage received by a display screen can be improved.

Description

A display module, a power management chip, an electronic device, and a power supply method.

[0001] This application claims priority to Chinese Patent Application No. 202510109470.X, filed on January 21, 2025, entitled “A display module, power management chip, electronic device and power supply method”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of chip technology, and in particular to a display module, a power management chip, an electronic device, and a power supply method. Background Technology

[0003] Electronic devices with display functions typically include a power management chip and a display screen, with the power management chip used to power the display screen. However, the voltage received by the display screen can be unstable. Summary of the Invention

[0004] This application provides a display module, a power management chip, an electronic device, and a power supply method, which solves the problem of unstable voltage received by the display screen in the prior art.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, a display module is provided. The display module includes a display screen and a voltage detection circuit. The display screen includes a power supply voltage input terminal. The voltage detection circuit includes a first terminal and a second terminal. The first terminal of the voltage detection circuit is coupled to the power supply voltage input terminal of the display screen, and the voltage detection circuit is used to acquire the power supply voltage received at the power supply voltage input terminal through the first terminal, and output voltage detection information through the second terminal.

[0007] In the above technical solution, a voltage detection circuit can be included in the display module to detect the voltage at the power supply input terminal. When the voltage detection circuit detects that the voltage at the power supply input terminal is not within the normal operating voltage range, it can adjust the voltage at the power supply input terminal. For example, if a power management chip is used to power the display screen, the output voltage of the power management chip can be adjusted to adjust the voltage at the power supply input terminal. When the voltage at the power supply input terminal is lower than the normal operating voltage range, the voltage at the power supply input terminal can be increased. This avoids a decrease in drive current, which could lead to insufficient brightness on the display screen, and also prevents the display's uniformity compensation function from being affected, maintaining display brightness and uniformity for different scenarios. When the voltage at the power supply input terminal is higher than the normal operating voltage range, the voltage at the power supply input terminal can be decreased. This reduces power consumption, prevents circuit aging, and increases the lifespan of the display screen while meeting its normal operating voltage. Moreover, the voltage detection circuit has a simple structure and low hardware cost. Therefore, overall, the voltage received by the display screen can be more stable.

[0008] In one possible implementation of the first aspect, a display screen is configured to receive a first power supply voltage via a power supply voltage input terminal during a first time period, and a second power supply voltage via a power supply voltage input terminal during a second time period. A voltage detection circuit is configured to acquire the first power supply voltage via a first terminal during the first time period and output voltage detection information via a second terminal. The voltage detection information is used to characterize the adjustment status of the second power supply voltage received by the power supply voltage input terminal during the second time period. In the above possible implementation, the voltage detection circuit can output voltage detection information to characterize whether the second power supply voltage needs to be adjusted based on the first power supply voltage. This allows for dynamic adjustment of the voltage at the power supply voltage input terminal to ensure the display screen operates at a suitable voltage. Therefore, the voltage received by the display screen can be more stable.

[0009] In one possible implementation of the first aspect, the voltage detection information is the voltage value of a first power supply voltage. The adjustment includes whether to adjust the first power supply voltage to obtain a second power supply voltage. In the above possible implementations, the voltage detection circuit can simply perform the function of acquiring voltage; the function of determining how to adjust the voltage based on the acquired voltage can be offloaded to other circuits with control functions. Thus, the structure of the voltage detection circuit can be designed to be very simple, saving on the circuit cost of the display module.

[0010] In one possible implementation of the first aspect, the first power supply voltage is within a preset range, and the adjustment includes: not adjusting the first power supply voltage, and the second power supply voltage being equal to the first power supply voltage. Alternatively, the first power supply voltage is not within the preset range, and the adjustment includes: adjusting the first power supply voltage to obtain a second power supply voltage, where the second power supply voltage is not equal to the first power supply voltage. In the above possible implementations, if the first power supply voltage is within the preset range, there is no need to adjust the first power supply voltage, and the second power supply voltage can be equal to the first power supply voltage. This eliminates the need for voltage adjustment, saving the overhead associated with voltage regulation. If the first power supply voltage is not within the preset range, then the first power supply voltage needs to be adjusted. This ensures that the voltage received by the display screen is relatively stable.

[0011] In one possible implementation of the first aspect, the voltage detection information is a voltage adjustment command, and the adjustment includes increasing or decreasing the first power supply voltage to obtain a second power supply voltage. In the above possible implementations, the voltage detection circuit can not only acquire voltage but also determine how to adjust the voltage based on the acquired voltage. Thus, no other control circuits are needed to cooperate with the display module. The display module has high compatibility with other circuits.

[0012] In one possible implementation of the first aspect, if the first power supply voltage is greater than the maximum value of a preset range, the adjustment includes decreasing the first power supply voltage to obtain a second power supply voltage. Alternatively, if the first power supply voltage is less than the minimum value of a preset range, the adjustment includes increasing the first power supply voltage to obtain a second power supply voltage. In the above possible implementations, if the first power supply voltage is greater than the maximum value of the preset range, the first power supply voltage is decreased to obtain the second power supply voltage, saving power consumption. If the first power supply voltage is less than the minimum value of the preset range, the first power supply voltage is increased to obtain the second power supply voltage, avoiding insufficient driving current for the display screen and preventing uneven display.

[0013] In one possible implementation of the first aspect, the voltage detection circuit is integrated into the display screen. Integrating the voltage detection circuit into the display screen in the above-described possible implementations reduces the area of ​​discrete circuitry outside the display screen.

[0014] Secondly, an electronic device is provided. The electronic device includes a power management chip and a display module provided in the first aspect or any possible implementation thereof. The power management chip includes a power supply voltage output terminal. The power supply voltage output terminal of the power management chip is coupled to the power supply voltage input terminal of the display screen of the display module.

[0015] In the above technical solution, the power management chip can be used to power the display screen, which facilitates the voltage adjustment of the power input terminal of the display screen.

[0016] In one possible implementation of the second aspect, the power management chip further includes a controlled terminal. The power management chip is used to output a third power supply voltage through a power supply voltage output terminal during a first time period. During the first time period, it receives a voltage adjustment command through the controlled terminal, which instructs to increase or decrease the third power supply voltage to obtain a fourth power supply voltage. The power management chip is also used to output the fourth power supply voltage through the power supply voltage output terminal according to the voltage adjustment command during a second time period. In the above possible implementations, adjusting the voltage at the power supply voltage input terminal can be specifically achieved by adjusting the voltage at the power supply voltage output terminal of the power management chip. This ensures that the voltage received by the display screen is relatively stable.

[0017] In one possible implementation of the second aspect, the voltage detection information is the voltage value of a first power supply voltage, which is not within a preset range. The electronic device also includes a processor. The controlled terminal of the power supply is coupled to the processor. The processor is coupled to the second terminal of the voltage detection circuit of the display module. The processor is used to receive the voltage detection information and output a voltage adjustment command based on the voltage detection information. In the above possible implementations, the voltage adjustment at the power supply voltage output terminal can be specifically controlled by the processor. No other control circuits are required, and the structure of the electronic device is relatively simple.

[0018] In one possible implementation of the second aspect, the voltage detection information is a voltage adjustment command. The controlled terminal of the power supply is coupled to the second terminal of the voltage detection circuit of the display module. In the above possible implementation, the processor can output a voltage adjustment command based on the voltage detection information output by the voltage detection circuit. In this way, the voltage at the power supply voltage input terminal of the display screen can be precisely adjusted.

[0019] Thirdly, a power management chip is provided. The power management chip includes a power supply voltage output terminal and a controlled terminal. The power supply voltage output terminal is used to couple a display screen. The power management chip is used to output a first power supply voltage through the power supply voltage output terminal during a first time period. During the first time period, it receives a voltage adjustment command through the controlled terminal, the voltage adjustment command indicating to increase or decrease the first power supply voltage to obtain a second power supply voltage. The power management chip is also used to output the second power supply voltage through the power supply voltage output terminal according to the voltage adjustment command during a second time period.

[0020] In the above technical solution, the power management chip is used to supply power to the display screen. The voltage output by the power management chip is not a fixed voltage, but a voltage that is dynamically adjusted according to the operating status of the display screen. In this way, a more stable voltage can be provided to the display screen.

[0021] Fourthly, an electronic device is provided. The electronic device includes a processor, a display screen, and a power management chip provided in the third aspect. The display screen is coupled to the power supply voltage output terminal of the power management chip. The processor is coupled to the controlled terminal of the power management chip. The processor is configured to send a voltage adjustment command to the power management chip in a first time period, based on the display image to be displayed on the display screen in a second time period and a first power supply voltage. The display image in the first time period is different from the display image in the second time period.

[0022] In the above technical solution, the processor can determine whether the current consumed by the LEDs is high or low based on the image to be displayed on the screen, and thus dynamically adjust the output voltage of the power management chip. In display scenarios where the LEDs consume a high current, the power management chip can increase the output voltage, thus increasing the voltage received at the power input terminal of the screen. This avoids situations where the drive current decreases, causing the screen brightness to fall short of the required level, and also prevents the screen's uniformity compensation function from being affected, maintaining display brightness and uniformity across different scenarios. In display scenarios where the LEDs consume a low current, the power management chip can decrease the output voltage, thus decreasing the voltage received at the power input terminal of the screen. This reduces power consumption while meeting the normal operating voltage of the screen, preventing circuit aging and increasing the screen's lifespan. Moreover, this implementation uses the processor for voltage regulation, requiring no or minimal hardware modifications, further saving hardware costs. Therefore, overall, the voltage received by the screen is more stable.

[0023] In one possible implementation of the fourth aspect, the display screen shows a preset display screen in the second time period. And / or, the display brightness of the display screen in the first time period is different from the display brightness in the second time period. In the above possible implementations, the processor can adjust the voltage output by the power management chip based on whether the display screen shows the preset display screen in the second time period. Alternatively, the processor can adjust the voltage output by the power management chip based on the display brightness of the display screen in both the first and second time periods. This method is relatively simple and requires only a small amount of processing resources to dynamically adjust the voltage output by the power management chip.

[0024] Fifthly, a power supply method is provided. This power supply method is applied to an electronic device, which includes a power management chip. The power management chip includes a power voltage output terminal for coupling a display screen. The power supply method includes: the power management chip outputting a first power voltage through the power voltage output terminal during a first time period; the power management chip receiving a voltage adjustment command during the first time period, the voltage adjustment command indicating to increase or decrease the first power voltage to obtain a second power voltage; and the power management chip outputting the second power voltage through the power voltage output terminal during a second time period according to the voltage adjustment command.

[0025] In one possible implementation of the fifth aspect, the electronic device further includes a display screen and a voltage detection circuit. The voltage detection circuit includes a first terminal and a second terminal. The display screen includes a power supply voltage input terminal. Both the first terminal of the voltage detection circuit and the power supply voltage output terminal of the power management chip are coupled to the power supply voltage input terminal of the display screen. The power supply method further includes: the display screen receiving a third power supply voltage through the power supply voltage input terminal during a first time period; and receiving a fourth power supply voltage through the power supply voltage input terminal during a second time period. The voltage detection circuit acquires the third power supply voltage through the first terminal during the first time period and outputs voltage detection information through the second terminal. The voltage detection information is used to characterize the adjustment of the fourth power supply voltage received by the power supply voltage input terminal during the second time period.

[0026] In one possible implementation of the fifth aspect, the voltage detection information is the voltage value of a first power supply voltage. If the first power supply voltage is not within a preset range, adjustments may be made, including adjusting a third power supply voltage to obtain a fourth power supply voltage, wherein the fourth power supply voltage is not equal to the third power supply voltage.

[0027] In one possible implementation of the fifth aspect, the first power supply voltage is not within a preset range, and the electronic device further includes a processor. The second terminal of the voltage detection circuit and the power management chip are both coupled to the processor. The power supply method further includes: the processor receiving voltage detection information during a first time period and sending a voltage adjustment command to the power management chip based on the voltage detection information.

[0028] In one possible implementation of the fifth aspect, the voltage detection information is a voltage adjustment command, and the adjustment includes: increasing or decreasing the third power supply voltage to obtain the fourth power supply voltage.

[0029] In one possible implementation of the fifth aspect, if the third power supply voltage is greater than the maximum value of a preset range, the adjustment includes decreasing the third power supply voltage to obtain a fourth power supply voltage. Alternatively, if the third power supply voltage is less than the minimum value of a preset range, the adjustment includes increasing the third power supply voltage to obtain a fourth power supply voltage.

[0030] In one possible implementation of the fifth aspect, the electronic device further includes a processor and a display screen. The display screen is coupled to the power supply voltage output terminal of the power management chip. The power supply method further includes: the processor sending a voltage adjustment command to the power management chip in a first time period, based on the display screen's image to be displayed in a second time period and a first power supply voltage. The display screen's image in the first time period differs from the display screen's image in the second time period.

[0031] In one possible implementation of the fifth aspect, the display screen displays a preset display image during the second time period. And / or, the display brightness of the display screen during the first time period is different from the display brightness of the display screen during the second time period.

[0032] Sixthly, a computer-readable storage medium is provided, wherein program code is stored therein, which can be invoked by a processor to execute the power supply method provided by the fifth aspect or any possible implementation thereof.

[0033] In a seventh aspect, a computer program product is provided that, when the computer program product is run on a computer, causes the computer to perform the power supply method provided in the fifth aspect or any possible implementation of the fifth aspect.

[0034] Understandably, any of the power supply methods, computer storage media, or computer program products provided above are used to execute the corresponding display modules, power management chips, and electronic devices described above. Therefore, the beneficial effects they can achieve can be referred to in the beneficial effects of the corresponding display modules, power management chips, and electronic devices described above, and will not be repeated here. Attached Figure Description

[0035] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0036] Figure 2 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0037] Figure 3 is a schematic diagram of a pixel circuit provided in an embodiment of this application;

[0038] Figure 4 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0039] Figure 5 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0040] Figure 6 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0041] Figure 7 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0042] Figure 8 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0043] Figure 9 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0044] Figure 10 is a schematic diagram of a power supply method provided in an embodiment of this application;

[0045] Figure 11 is a schematic diagram of a power supply method provided in an embodiment of this application;

[0046] Figure 12 is a schematic diagram of a power supply method provided in an embodiment of this application. Detailed Implementation

[0047] It should be noted that the terms "first" and "second" used in the embodiments of this application are only used to distinguish features of the same type and should not be construed as indicating relative importance, quantity, order, etc.

[0048] The terms "exemplary" or "for example" used in the embodiments of this application are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0049] The terms "coupling" and "connection" used in the embodiments of this application should be interpreted broadly. For example, they can refer to a physical direct connection or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0050] First, the application scenarios of the embodiments of this application will be introduced.

[0051] The embodiments of this application can be applied to electronic devices with display functions. These electronic devices include, but are not limited to: mobile phones, tablets, computers, laptops, camcorders, cameras, wearable devices, in-vehicle devices, or terminal devices, etc.

[0052] In some possible implementations, as shown in FIG1, the electronic device 1000 may include a processor 1100, a power management integrated circuit (PMIC) 1200, a flexible printed circuit (FPC), and a display module 1300. The power management chip 1200 may include a power supply voltage output terminal T. The display module 1300 may include a display screen 1310. The display screen 1310 may include a power supply voltage input terminal N. The power supply voltage output terminal T and the power supply voltage input terminal N may be coupled via the FPC. The FPC may also be replaced with other transmission lines. The processor 1100 may be coupled to the display module 1300.

[0053] In some examples, processor 1100 can be used to control electronic device 1000. Processor 1100 can be a central processing unit (CPU), general-purpose processor, digital signal processor, neural network processor, graphics processing unit (GPU), image signal processor, microcontroller, or microprocessor, etc. The number of processors 1100 can be one or more. For example, when there are multiple processors 1100, the multiple processors 1100 can include CPUs and GPUs. Optionally, processor 1100 can also be referred to as control circuitry or main control circuitry.

[0054] In some further examples, the power management chip 1200 can be used to receive the voltage output from a battery or power source (not shown in Figure 1); convert the voltage output from the battery or power source; and output the converted voltage to the display screen 1310. The voltage output from the battery or power source may be relatively high or unstable. The power management chip 1200 may internally include components such as a voltage regulator, filter, and controller. The power management chip 1200 can be used to perform voltage conversion through these components. Thus, the power management chip 1200 can output a voltage adapted to the operation of the display screen 1310. For example, the power management chip 1200 can be used to convert a higher voltage to a lower voltage. Alternatively, the power management chip 1200 can be used to convert an unstable voltage to a stable voltage. In this way, the display screen 1310 can receive stable and reliable voltage support regardless of changes in the battery or power source voltage.

[0055] In other examples, processor 1100 can be used to calculate data for a display screen 1310 to display. This data can indicate the color, brightness, and other parameters of the display screen to be displayed. Display screen 1310 can then display the data based on the data calculated by processor 1100.

[0056] As shown in Figure 2, the display screen 1310 may include a driver chip 1311 and a pixel circuit 1312. The power supply voltage input terminal N of the display screen 1310 can be the input terminal of the pixel circuit 1312. Optionally, there can be one power supply voltage input terminal N (or the input terminal of the pixel circuit 1312), which can be used to receive an analog positive voltage source (analog VDD, AVDD) or an analog negative voltage source (analog VEE, AVEE). Optionally, there can be two power supply voltage input terminals N, which can be used to receive analog positive voltage sources (analog VDD, AVDD) and analog negative voltage sources (analog VEE, AVEE) respectively. The input terminal of the pixel circuit 1312 is coupled to the driver chip 1311. The power supply voltage output terminal T of the power management chip 1200 can be coupled to the driver chip 1311. The driver chip 1311 can be a display driver chip 1311. The driver chip 1311 can be used to parse data from the processor 1100, decode and convert the data to adapt it to the display format of the display screen 1310. The driver chip 1311 can also forward the processed data to the pixel circuit 1312. Optionally, the driver chip 1311 can be separate from the pixel circuit 1312. Alternatively, the driver chip 1311 can be integrated with the pixel circuit 1312 in the same circuit. This application embodiment does not impose any limitations on this.

[0057] As shown in Figure 3, the pixel circuit 1312 may include multiple light-emitting diodes (LEDs), such as micro LEDs (uLEDs). The voltage provided by the power management chip 1200 is supplied to the LEDs of the pixel circuit 1312 via the driver chip 1311, thereby enabling the display screen 1310 to display an image. The power management chip 1200 can be used to provide AVDD and / or AVEE to the pixel circuit 1312 through the power supply voltage output terminal T.

[0058] The number of LEDs illuminated varies depending on the display scenario. Taking the pixel circuit 1312, which uses micro LEDs, as an example, the pixel circuit 1312 can include hundreds of thousands or even millions of micro LEDs. For instance, in an information prompt scenario, 5% of the micro LEDs are illuminated. In a full-screen video playback scenario, 100% of the micro LEDs are illuminated. LEDs are active light-emitting devices; they only consume current when illuminated and do not consume current when not illuminated. Therefore, the current consumed by LEDs can vary by tens or even hundreds of times depending on the display scenario or display image.

[0059] As shown in Figure 1, the power supply voltage output terminal T of the power management chip 1200 and the power supply voltage input terminal N of the display screen 1310 are coupled through an FPC. This means that the voltage supplied by the power management chip 1200 to the display screen 1310 needs to pass through the FPC. Since the FPC has impedance, there is a voltage drop between the power supply voltage output terminal T of the power management chip 1200 and the power supply voltage input terminal N of the display screen 1310. The greater the current consumed by the LED, the greater this voltage drop; the smaller the current consumed by the LED, the smaller the voltage drop.

[0060] In some possible implementations, the power management chip 1200's power supply voltage output terminal T is used to output a fixed voltage. The operating voltage of the display screen 1310 has a preset range. When the voltage at the power supply voltage input terminal N of the display screen 1310 is within the preset range, the display screen 1310 can operate normally. When the voltage at the power supply voltage input terminal N of the display screen 1310 is not within the preset range, the display screen 1310 cannot operate normally. The power supply voltage output terminal T typically outputs a fixed voltage. Even when there is a voltage drop between the power supply voltage output terminal T and the power supply voltage input terminal N, the voltage at the power supply voltage input terminal N is kept within the preset range as much as possible, but there are exceptions.

[0061] In some examples, the voltage output at the power supply voltage output terminal T of the power management chip 1200 is relatively small. In display scenarios where the LED consumes a large current, the voltage received at the power supply voltage input terminal N of the display screen 1310 is insufficient to support the normal operation of the display screen 1310.

[0062] For example, the operating voltage of the display screen 1310 is preset to a range of 3 to 4 volts (V), and the preset range may include 3V and 4V. The voltage output by the power supply voltage output terminal T of the power management chip 1200 is fixed at 5V at the factory.

[0063] In scenarios with maximum brightness and the entire LED screen lit, the LED consumes the maximum current, resulting in a significant voltage drop due to the FPC's impedance, for example, 2.5V. The voltage received at the power input terminal N of the display 1310 is 2.5V, which is less than the minimum value within the preset range, causing the display 1310 to malfunction.

[0064] In this example, in a display scenario where the LED consumes a large current, the voltage drop caused by the FPC's impedance is significant. On one hand, the voltage at the power supply input terminal N (e.g., AVDD or AVEE as mentioned above) will experience a large internal resistance drop (IR Drop), causing the corresponding circuitry in display screen 1310 to operate in the linear region and resulting in a decrease in drive current. This decrease in drive current will cause the brightness of display screen 1310 to fall short of the required brightness. On the other hand, the device performance of each pixel in pixel circuit 1312 may differ, leading to uneven brightness across multiple pixels. Typically, this uneven brightness can be mitigated by the uniformity compensation function of driver chip 1311. However, due to the large voltage drop caused by the FPC's impedance, the voltage received by driver chip 1311 decreases, affecting its uniformity compensation function. Therefore, the uniformity of the displayed image on display screen 1310 deteriorates.

[0065] In other examples, the voltage output from the power management chip 1200's power supply voltage output terminal T is increased, thereby alleviating the problem of insufficient voltage received at the power supply voltage input terminal N of the display screen 1310.

[0066] For example, the operating voltage of the display 1310 is preset to a range of 3 to 4 volts (V), and the preset range may include 3V and 4V. The voltage output by the power supply voltage output terminal T of the power management chip 1200 is fixed at 5.5V at the factory.

[0067] In scenarios with maximum brightness and the entire LED screen lit, the LED consumes the maximum current, resulting in a significant voltage drop due to the FPC's impedance, for example, 3V. The power input terminal N of display screen 1310 receives 3V, which is within the preset range, allowing display screen 1310 to operate normally.

[0068] However, in scenarios with low brightness or few lit LEDs, the current consumed by the LEDs is small, and the voltage drop caused by the FPC impedance is small, for example, 0.5V. The voltage received at the power input terminal N of the display 1310 is 5V, which is greater than the maximum value of the preset range, indicating that the voltage received by the display 1310 is too high.

[0069] In this example, in a display scenario where the LED consumes a large current, the voltage drop caused by the FPC's impedance is significant. Because the voltage output from the power management chip 1200's power supply output terminal T is increased, the voltage received at the power supply input terminal N of the display screen 1310 also increases accordingly. The voltage received at the power supply input terminal N is sufficient to support the normal operation of the display screen 1310. Thus, the drive current can remain constant in all scenarios.

[0070] However, in display scenarios where LEDs consume relatively little current, the voltage drop caused by the FPC's impedance is small. The voltage output at the power supply voltage output terminal T is fixed at a relatively high value. This results in an excessively high voltage at the power supply voltage input terminal N in this scenario, wasting power. Furthermore, in most display scenarios of the display 1310, the current consumed by the LEDs is relatively small, such as information prompts with low average picture luminance (APL). Maintaining an excessively high voltage at the power supply voltage input terminal N will cause the circuitry in the display 1310 to age faster, resulting in a shorter lifespan for the display 1310.

[0071] In some other possible implementations, the voltage output by the power management chip 1200 at its power supply voltage output terminal T can be adjusted based on the voltage received by the display screen 1310 at its power supply voltage input terminal N. This allows for dynamic adaptation to different display scenarios.

[0072] For example, the operating voltage of the display 1310 is preset to a range of 3 to 4 volts (V), and the preset range may include 3V and 4V. The voltage output by the power supply voltage output terminal T of the power management chip 1200 is set to 4V at the factory.

[0073] In scenarios with low brightness or few lit LEDs, the LEDs consume less current, resulting in a smaller voltage drop due to the FPC's impedance. The output voltage at the power supply voltage terminal T can be maintained at a relatively low level, such as 4V.

[0074] In scenarios with high brightness or a large number of lit LEDs, the LEDs consume a significant amount of current, resulting in a large voltage drop due to the FPC's impedance. The output voltage at the power supply voltage terminal T can be appropriately increased, for example, to 5.5V.

[0075] In this example, by dynamically adjusting the voltage output of the power supply voltage output terminal T, the voltage output of the power supply voltage output terminal T can meet more display scenarios of the display screen 1310.

[0076] In some possible implementations, based on the method of dynamically adjusting the voltage output at the power supply voltage output terminal T, the electronic device 1000 shown in FIG1 can be specifically referred to the structure in FIG4 and FIG5.

[0077] As shown in Figures 4 and 5, the power management chip 1200 may also include a controlled terminal SK, and the processor 1100 may be coupled to the controlled terminal SK of the power management chip 1200.

[0078] The power management chip 1200 can be used to output a first power supply voltage through the power supply voltage output terminal T during the first time period.

[0079] The processor 1100 can be used to send a voltage adjustment command to the power management chip 1200 during a first time period, based on the display screen 1310 to be displayed during a second time period and the first power supply voltage. The voltage adjustment command is used to instruct the increase or decrease of the first power supply voltage to obtain a second power supply voltage. The power management chip 1200 can also be used to receive the voltage adjustment command through the controlled terminal SK during the first time period.

[0080] The power management chip 1200 can also be used to output a second power supply voltage through the power supply voltage output terminal T according to the voltage adjustment command in the second time period. The display screen 1310 displays in the first time period may differ from the display screen 1310 displays in the second time period.

[0081] In some examples, the image to be displayed can be the next frame or several subsequent frames. Processor 1100 can know the image to be displayed on display screen 1310, or processor 1100 can know the parameters of the image to be displayed. Processor 1100 can determine, based on the image to be displayed, whether display screen 1310 needs to adjust the voltage output at power supply voltage terminal T in the second time period.

[0082] When the processor 1100 determines that the brightness of the image to be displayed is high, or that the image to be displayed requires a large number of LEDs to be lit by the pixel circuit 1312, the voltage adjustment command can instruct an increase in the first power supply voltage to obtain a larger second power supply voltage. At the time of display of the image to be displayed, the power supply voltage output terminal T can output a larger second power supply voltage.

[0083] When the processor 1100 determines that the brightness of the image to be displayed is low, or that the image to be displayed requires fewer LEDs to be lit by the pixel circuit 1312, the voltage adjustment command can instruct a reduction in the first power supply voltage to obtain a smaller second power supply voltage. At the time the image to be displayed is shown, the power supply voltage output terminal T can output the smaller second power supply voltage.

[0084] In this embodiment, the processor 1100 can determine whether the current consumed by the LED is large or small based on the image to be displayed on the display screen 1310, and thus dynamically adjust the voltage output by the power management chip 1200. In display scenarios where the LED current consumption is large, the power management chip 1200 can increase the output voltage, and the voltage received at the power input terminal N of the display screen 1310 will also increase. This avoids a decrease in driving current that would cause the brightness of the display screen 1310 to fall short of the required brightness, and also prevents the uniformity compensation function of the display screen 1310 from being affected, maintaining display brightness and uniformity for different scenarios. In display scenarios where the LED current consumption is small, the power management chip 1200 can decrease the output voltage, and the voltage received at the power input terminal N of the display screen 1310 will also decrease. This reduces power consumption while meeting the normal operating voltage of the display screen 1310, preventing circuit aging and increasing the lifespan of the display screen 1310. Moreover, this embodiment uses the processor 1100 for voltage regulation, requiring no hardware modifications or requiring only minor hardware modifications, further saving hardware costs. Therefore, in general, the voltage received by the display 1310 can be more stable.

[0085] For example, the display screen 1310 displays a preset display screen during the second time period. The preset display screen can be a display screen where the number of LEDs lit by the pixel circuit 1312 is not within a preset range. For example, in an information prompt display screen, the entire display screen contains only a small prompt box, the image within the prompt box is in color (requiring LEDs to be lit), and the image outside the prompt box is black (not requiring LEDs to be lit). This display screen requires the pixel circuit 1312 to light up an LED number less than the minimum value of the preset range. The processor 1100 can determine whether the image to be displayed is a preset display screen based on the parameters of the image to be displayed.

[0086] In this example, the processor 1100 can adjust the voltage output by the power management chip 1200 based on the preset display screen shown on the display screen 1310 during the second time period. This method is relatively simple and requires only a small amount of processing resources to dynamically adjust the voltage output by the power management chip 1200.

[0087] For example, the display brightness of the display screen 1310 in the first time period is different from the display brightness of the display screen 1310 in the second time period. Optionally, the display brightness can be an average display brightness. For example, most of the screen in the display is low in brightness, and only a small portion of the screen is high in brightness. The processor 1100 can calculate the average display brightness of the entire display screen based on the brightness of each portion of the screen.

[0088] In this example, the processor 1100 can adjust the voltage output by the power management chip 1200 based on the display brightness of the display screen 1310 during a first time period and a second time period. This method is relatively simple and requires only a small amount of processing resources to dynamically adjust the voltage output by the power management chip 1200.

[0089] As another example, the display screen 1310 displays a preset display screen in the second time period, and the display brightness of the display screen 1310 in the first time period is different from the display brightness of the display screen 1310 in the second time period.

[0090] The above describes a convenient way to adjust the voltage output at the power supply voltage output terminal T. Next, we will introduce a more precise way to adjust the voltage output at the power supply voltage output terminal T.

[0091] In some other possible implementations, based on the method of dynamically adjusting the voltage output of the power supply voltage output terminal T, the electronic device 1000 shown in FIG1 can be specifically referred to the structure in FIG6 to FIG9.

[0092] As shown in Figure 6, the display module 1300 also includes a voltage detection circuit 1320. The voltage detection circuit 1320 includes a first terminal S1 and a second terminal S2. The first terminal S1 of the voltage detection circuit 1320 is coupled to the power supply voltage input terminal N of the display screen 1310. The voltage detection circuit 1320 can be used to acquire the power supply voltage received at the power supply voltage input terminal N through the first terminal S1 and output voltage detection information through the second terminal S2.

[0093] For example, the voltage detection circuit 1320 can be discretely disposed from the display screen 1310. Alternatively, the voltage detection circuit 1320 can be integrated into the display screen 1310. As shown in FIG7, if the driver chip 1311 and the pixel circuit 1312 are integrated together in the display screen 1310, the voltage detection circuit 1320 can be integrated into the driver chip 1311 or discretely disposed from the driver chip 1311. The first terminal S1 of the voltage detection circuit 1320 detects the voltage input to the input terminal of the pixel circuit 1312. In this example, the arrangement of the voltage detection circuit 1320 is more flexible and simpler. Integrating the voltage detection circuit 1320 into the display screen 1310 can reduce the area of ​​discrete circuits outside the display screen 1310.

[0094] In this embodiment, a voltage detection circuit 1320 can be provided in the display module 1300 to detect the voltage at the power supply voltage input terminal N. When the voltage detection circuit 1320 detects that the voltage at the power supply voltage input terminal N is not within the normal operating voltage range, the electronic device 1000 can adjust the voltage at the power supply voltage input terminal N. For example, the voltage at the power supply voltage input terminal N can be adjusted by adjusting the voltage at the power supply voltage output terminal T of the power management chip 1200. When the voltage at the power supply voltage input terminal N is less than the normal operating voltage range, the electronic device 1000 can increase the voltage at the power supply voltage input terminal N. This avoids the situation where the drive current decreases, causing the brightness of the display screen 1310 to fall short of the required brightness, and also avoids affecting the uniformity compensation function of the display screen 1310, maintaining display brightness and uniformity for different scenarios. When the voltage at the power supply voltage input terminal N is greater than the normal operating voltage range, the electronic device 1000 can decrease the voltage at the power supply voltage input terminal N. This reduces power consumption, prevents circuit aging, and extends the lifespan of the display screen 1310 while meeting its normal operating voltage. Furthermore, the voltage detection circuit 1320 has a simple structure and low hardware cost. Therefore, overall, the voltage received by the display screen 1310 can be more stable.

[0095] In some possible implementations, the display screen 1310 is used to receive a third power supply voltage via the power supply voltage input terminal N during a first time period. The voltage detection circuit 1320 is used to acquire the third power supply voltage via a first terminal S1 during the first time period and output voltage detection information via a second terminal S2. The voltage detection information is used to characterize the adjustment of the fourth power supply voltage received by the power supply voltage input terminal N during a second time period. The display screen 1310 is used to receive the fourth power supply voltage via the power supply voltage input terminal N during the second time period.

[0096] In some examples, voltage detection information can be used to characterize the fourth power supply voltage received at the power supply voltage input terminal N in a second time period, based on the adjustment of the third power supply voltage. For example, the fourth power supply voltage should be adjusted up, down, or not adjusted at all based on the third power supply voltage.

[0097] In this embodiment, the voltage detection circuit 1320 can output voltage detection information to indicate whether it is necessary to adjust the fourth power supply voltage based on the third power supply voltage. Thus, the electronic device 1000 can dynamically adjust the voltage at the power supply voltage input terminal N to ensure that the display screen 1310 operates at a suitable voltage. Therefore, the voltage received by the display screen 1310 can be more stable.

[0098] The voltage detection circuit 1320 can function in at least two ways. For example, in the first case, the voltage detection circuit 1320 only has the function of acquiring (or detecting) voltage. In this case, the actual control of the adjustment of the fourth power supply voltage can be achieved by other circuits with control functions. Another example is that the voltage detection circuit 1320 not only has the function of acquiring voltage but also has a control function. The voltage detection circuit 1320 can control the adjustment of the fourth power supply voltage. These two cases will be described below.

[0099] In the first scenario, the voltage detection information is the voltage value of the third power supply voltage. The adjustment of the fourth power supply voltage includes whether the third power supply voltage is adjusted to obtain the fourth power supply voltage.

[0100] For example, the voltage detection circuit 1320 can acquire the power supply voltage received at the power supply voltage input terminal N through its first terminal S1, and output the acquired voltage value through its second terminal S2. The voltage detection circuit 1320 can acquire and output the acquired voltage value periodically. The voltage value of the third power supply voltage output by the voltage detection circuit 1320 through its second terminal S2 can be used to characterize whether a fourth power supply voltage needs to be adjusted based on the third power supply voltage. Other circuits with control functions can receive the voltage value output by the second terminal S2 of the voltage detection circuit 1320 and determine, based on this voltage value, how to adjust the fourth power supply voltage based on the third power supply voltage.

[0101] In this embodiment, the voltage detection circuit 1320 can only perform the function of acquiring voltage. The function of determining how to adjust the voltage based on the acquired voltage can be offloaded to other circuits with control functions. In this way, the structure of the voltage detection circuit 1320 can be designed to be very simple, saving circuit costs of the display module 1300.

[0102] For example, if the third power supply voltage is within a preset range, the display screen 1310 can operate normally. Based on this condition, it can be determined whether to adjust the third power supply voltage to obtain the fourth power supply voltage.

[0103] For example, if the third power supply voltage is within a preset range, the adjustment options include: not adjusting the third power supply voltage, and the fourth power supply voltage being equal to the third power supply voltage. Alternatively, if the third power supply voltage is not within the preset range, the adjustment options include: adjusting the third power supply voltage to obtain the fourth power supply voltage, and the fourth power supply voltage not being equal to the third power supply voltage.

[0104] In this embodiment, if the third power supply voltage is within a preset range, there is no need to adjust it, and the fourth power supply voltage can be equal to the third power supply voltage. This eliminates the need for voltage adjustment in the electronic device 1000, saving on the overhead associated with voltage regulation. If the third power supply voltage is not within the preset range, then adjustment is required. This ensures that the voltage received by the display screen 1310 is relatively stable.

[0105] In some examples of the first scenario, the power management chip 1200 also includes a controlled terminal SK. The power management chip 1200 is used to output a first power supply voltage through the power supply voltage output terminal T during a first time period. The first power supply voltage, after passing through the voltage drop of the FPC, becomes a third power supply voltage when it reaches the power supply voltage input terminal N of the display screen 1310.

[0106] For example, other circuits with control functions can determine that the third power supply voltage is within a preset range, which allows the display screen 1310 to operate normally. Then, the power management chip 1200 is also used to output the first power supply voltage through the power supply voltage output terminal T during a second time period. The display screen 1310 is also used to input a fourth power supply voltage through the power supply voltage input terminal N during another second time period, the fourth power supply voltage being equal to the third power supply voltage.

[0107] For example, other circuits with control functions may determine that the third power supply voltage is not within a preset range, preventing the display screen 1310 from operating normally. In this case, the power management chip 1200 is further configured to receive a voltage adjustment command via the controlled terminal SK during a first time period. The voltage adjustment command instructs the user to increase or decrease the first power supply voltage to obtain a second power supply voltage. The power management chip 1200 is also configured to output the second power supply voltage via the power supply voltage output terminal T during a second time period, according to the voltage adjustment command. The display screen 1310 is configured to input a fourth power supply voltage via the power supply voltage input terminal N during the second time period. The fourth power supply voltage is the voltage obtained by increasing or decreasing the third power supply voltage.

[0108] In this embodiment, adjusting the voltage at the power supply voltage input terminal N can be achieved by adjusting the voltage at the power supply voltage output terminal T of the power management chip 1200. This ensures that the voltage received by the display screen 1310 is relatively stable.

[0109] As another example, other circuits with control functions may be processor 1100 or drive circuits. Taking processor 1100 as an example, as shown in Figures 6 and 7, the controlled terminal SK of the power supply is coupled to processor 1100, and processor 1100 is also coupled to the second terminal S2 of voltage detection circuit 1320.

[0110] The processor 1100 can periodically read the voltage detection information output by the voltage detection circuit 1320. If the third power supply voltage is within a preset range, the processor 1100 does not send a voltage adjustment command to the controlled terminal SK of the power supply. If the third power supply voltage is not within the preset range, the processor 1100 receives the voltage detection information and outputs a voltage adjustment command based on the voltage detection information.

[0111] In this embodiment, the voltage at the power supply output terminal T is adjusted, which can be specifically controlled by the processor 1100. No other control circuitry is required, resulting in a relatively simple structure for the electronic device 1000.

[0112] In the second scenario, the voltage detection information is a voltage adjustment command. The adjustment of the fourth power supply voltage includes increasing or decreasing the third power supply voltage to obtain the fourth power supply voltage.

[0113] For example, the voltage detection circuit 1320 can be used to acquire the power supply voltage received at the power supply voltage input terminal N via the first terminal S1. The voltage detection circuit 1320 can also be used to determine, based on the voltage value of the power supply voltage, whether and how to adjust (increase or decrease) the power supply voltage. If the voltage value is within a preset range, the voltage detection circuit 1320 determines that no further adjustment is needed and does not output a voltage adjustment command via the second terminal S2. If the voltage value is not within the preset range, the voltage detection circuit 1320 determines that further adjustment is needed. After determining how to adjust the fourth power supply voltage based on the third power supply voltage, the voltage detection circuit 1320 outputs a voltage adjustment command via the second terminal S2.

[0114] In this embodiment, the voltage detection circuit 1320 not only collects voltage data but also determines how to adjust the voltage based on the collected data. Thus, no other control circuits in the electronic device 1000 are required to work with the display module 1300. The display module 1300 has high compatibility with other circuits in the electronic device 1000.

[0115] For example, based on the magnitude of the third power supply voltage and the preset range, it can be determined how to adjust the third power supply voltage to obtain the fourth power supply voltage.

[0116] For example, if the third power supply voltage is greater than the maximum value of the preset range, the adjustment includes decreasing the third power supply voltage to obtain the fourth power supply voltage. As another example, if the third power supply voltage is less than the minimum value of the preset range, the adjustment includes increasing the third power supply voltage to obtain the fourth power supply voltage.

[0117] In this embodiment, if the third power supply voltage is greater than the maximum value of the preset range, the third power supply voltage is reduced to obtain the fourth power supply voltage, thereby saving power consumption of the electronic device 1000. If the third power supply voltage is less than the minimum value of the preset range, the third power supply voltage is increased to obtain the fourth power supply voltage, thus avoiding insufficient driving current for the display screen 1310 and avoiding uneven display.

[0118] In some examples of the second scenario, as shown in Figure 8, the power management chip 1200 also includes a controlled terminal SK. The controlled terminal SK is coupled to the second terminal S2 of the voltage detection circuit 1320. As shown in Figure 9, if the driver chip 1311 is integrated with the pixel circuit 1312 in the display screen 1310, the first terminal S1 of the voltage detection circuit 1320 is coupled to the input terminal of the pixel circuit 1312. The first terminal S1 of the voltage detection circuit 1320 detects the voltage input to the input terminal of the pixel circuit 1312.

[0119] For example, the power management chip 1200 is used to output a first power supply voltage through the power supply voltage output terminal T during a first time period.

[0120] The power management chip 1200 is also used to receive voltage regulation commands through the controlled terminal SK during a first time period. The voltage regulation commands instruct the user to increase or decrease the first power supply voltage to obtain a second power supply voltage. The voltage regulation commands can also instruct how the voltage output at the power supply voltage output terminal T changes. Since there is a relationship (voltage drop) between the voltage at the power supply voltage output terminal T and the voltage at the power supply voltage input terminal N, the voltage regulation commands can also indicate an increase or decrease in the third power supply voltage to obtain a fourth power supply voltage.

[0121] The power management chip 1200 is also used to output a second power supply voltage through the power supply voltage output terminal T according to a voltage regulation command during the second time period. The display screen 1310 is used to input a fourth power supply voltage through the power supply voltage input terminal N during the second time period. The fourth power supply voltage is a voltage obtained by increasing or decreasing the third power supply voltage.

[0122] In this embodiment, adjusting the voltage at the power input terminal N can be achieved by adjusting the voltage at the power output terminal T of the power management chip 1200. This ensures that the voltage received by the display screen 1310 is relatively stable. Adjusting the voltage at the power output terminal T can be controlled by the voltage detection circuit 1320. No other control circuits are required, resulting in a relatively simple structure for the electronic device 1000.

[0123] Based on the electronic device 1000 shown in Figures 1 to 9 above, and the components in the electronic device 1000, this application provides a power supply method.

[0124] In some possible implementations, as shown in FIG10, the power supply method may include one or more of the following steps:

[0125] S110: The power management chip 1200 outputs a first power supply voltage through the power supply voltage output terminal T during a first time period. For example, the first power supply voltage can be used to power the display screen 1310.

[0126] S120: In the first time period, the processor 1100 sends a voltage adjustment command to the power management chip 1200 based on the display screen 1310 to be displayed in the second time period and the first power supply voltage. The voltage adjustment command is used to instruct the increase or decrease of the first power supply voltage to obtain a second power supply voltage.

[0127] S130: The power management chip 1200 receives voltage regulation commands in the first time period.

[0128] S140: In the second time period, the power management chip 1200 outputs a second power supply voltage through the power supply voltage output terminal T according to the voltage regulation command. For example, the second power supply voltage can be used to power the display screen 1310.

[0129] The display screen 1310 displays a different image in the first time period than it displays in the second time period.

[0130] In some examples, the display screen 1310 displays a preset display screen during the second time period.

[0131] In other examples, the display brightness of display 1310 in the first time period is different from the display brightness of display 1310 in the second time period.

[0132] In some other examples, the display screen 1310 displays a preset display screen in the second time period, and the display brightness of the display screen 1310 in the first time period is different from the display brightness of the display screen 1310 in the second time period.

[0133] It is understood that the above power supply method can be applied to the components of the electronic device 1000 in the aforementioned embodiment of the electronic device 1000. Since the functions and effects of each component have been described in detail in the aforementioned embodiment of the electronic device 1000, they will not be repeated here.

[0134] In some other possible implementations, as shown in Figure 11, the power supply method may further include one or more of the following steps:

[0135] S210: The power management chip 1200 outputs a first power supply voltage through the power supply voltage output terminal T during a first time period. For example, the first power supply voltage can be used to power the display screen 1310.

[0136] S220: The display screen 1310 receives a third power supply voltage through the power supply voltage input terminal N during a first time period. For example, the third power supply voltage may be the voltage resulting from the voltage drop of the first power supply voltage after passing through the FPC.

[0137] S230: The voltage detection circuit 1320 acquires the third power supply voltage through its first terminal S1 during the first time period and outputs voltage detection information through its second terminal S2. The voltage detection information is used to characterize the adjustment of the power supply voltage received at the power supply voltage input terminal N during the second time period.

[0138] For example, the voltage detection information is the voltage value of a first power supply voltage. If the first power supply voltage is not within a preset range, the adjustment includes: adjusting the third power supply voltage to obtain a fourth power supply voltage, where the fourth power supply voltage is not equal to the third power supply voltage.

[0139] S240: In the first time period, the processor 1100 receives voltage detection information and sends a voltage adjustment command to the power management chip 1200 based on the voltage detection information. The voltage adjustment command is used to instruct the increase or decrease of the first power supply voltage to obtain the second power supply voltage.

[0140] S250: The power management chip 1200 receives voltage regulation commands in the first time period.

[0141] S260: In the second time period, the power management chip 1200 outputs a second power supply voltage through the power supply voltage output terminal T according to the voltage regulation command. For example, the second power supply voltage can be used to power the display screen 1310.

[0142] S270: During the second time period, the display 1310 receives a fourth power supply voltage through the power supply voltage input terminal N. For example, the fourth power supply voltage may be the voltage resulting from the voltage drop of the second power supply voltage after passing through the FPC.

[0143] It is understood that the above power supply method can be applied to the components of the electronic device 1000 in the aforementioned embodiment of the electronic device 1000. Since the functions and effects of each component have been described in detail in the aforementioned embodiment of the electronic device 1000, they will not be repeated here.

[0144] In some other possible implementations, as shown in Figure 12, the power supply method may further include one or more of the following steps:

[0145] S310: The power management chip 1200 outputs a first power supply voltage through the power supply voltage output terminal T during a first time period. For example, the first power supply voltage can be used to power the display screen 1310.

[0146] S320: The display 1310 receives a third power supply voltage through the power supply voltage input terminal N during a first time period. For example, the third power supply voltage may be the voltage resulting from the voltage drop of the first power supply voltage after passing through the FPC.

[0147] S330: The voltage detection circuit 1320 acquires the third power supply voltage through its first terminal S1 during the first time period and outputs voltage detection information through its second terminal S2. The voltage detection information is used to characterize the adjustment of the power supply voltage received at the power supply voltage input terminal N during the second time period.

[0148] For example, the voltage detection information is a voltage adjustment command, and the adjustment includes: increasing or decreasing the third power supply voltage to obtain the fourth power supply voltage. Optionally, if the third power supply voltage is greater than the maximum value of a preset range, the adjustment includes: decreasing the third power supply voltage to obtain the fourth power supply voltage. Alternatively, if the third power supply voltage is less than the minimum value of a preset range, the adjustment includes: increasing the third power supply voltage to obtain the fourth power supply voltage.

[0149] S340: The power management chip 1200 receives voltage regulation commands in the first time period.

[0150] S350: In the second time period, the power management chip 1200 outputs a second power supply voltage through the power supply voltage output terminal T according to the voltage regulation command. For example, the second power supply voltage can be used to power the display screen 1310.

[0151] S360: During the second time period, the display 1310 receives a fourth power supply voltage through the power supply voltage input terminal N. For example, the fourth power supply voltage may be the voltage resulting from the voltage drop of the second power supply voltage after passing through the FPC.

[0152] It is understood that the above power supply method can be applied to the components of the electronic device 1000 in the aforementioned embodiment of the electronic device 1000. Since the functions and effects of each component have been described in detail in the aforementioned embodiment of the electronic device 1000, they will not be repeated here.

[0153] The processor involved in the embodiments of this application can be a chip. For example, it can 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.

[0154] This application also provides a computer-readable storage medium storing program code. When the medium is run on a device (e.g., a microcontroller, chip, computer, or processor), the program code can be invoked by the processor to execute one or more steps in the above method embodiments.

[0155] Based on this understanding, this application also provides a computer program product containing instructions. The technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or its processor to execute all or part of the steps of the methods described in the various embodiments of this application.

[0156] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0157] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0158] In the several embodiments provided in this application, it is understood that the disclosed devices, modules, chips, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or modules may be electrical, mechanical, or other forms.

[0159] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located on one device or distributed across multiple devices. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0160] In addition, the functional modules in the various embodiments of this application can be integrated into one device, or each module can exist physically separately, or two or more modules can be integrated into one device.

[0161] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This 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 the embodiments of 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 (DSL)) 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 containing one or more servers, data centers, etc., that can be integrated with the medium. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

[0162] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display module, characterized in that, The display module includes a display screen and a voltage detection circuit; the display screen includes a power supply voltage input terminal; the voltage detection circuit includes a first terminal and a second terminal; The first terminal of the voltage detection circuit is coupled to the power supply voltage input terminal of the display screen. The voltage detection circuit is used to acquire the power supply voltage received by the power supply voltage input terminal through the first terminal and output voltage detection information through the second terminal.

2. The display module according to claim 1, characterized in that, The display screen is used to receive a first power supply voltage through the power supply voltage input terminal during a first time period; and to receive a second power supply voltage through the power supply voltage input terminal during a second time period. The voltage detection circuit is used to acquire the first power supply voltage through the first terminal during the first time period and output voltage detection information through the second terminal; the voltage detection information is used to characterize the adjustment of the second power supply voltage received by the power supply voltage input terminal during the second time period.

3. The display module according to claim 2, characterized in that, The voltage detection information is the voltage value of the first power supply voltage; The adjustment includes whether to adjust the first power supply voltage to obtain the second power supply voltage.

4. The display module according to claim 3, characterized in that, The first power supply voltage is within a preset range, and the adjustment conditions include: not adjusting the first power supply voltage, and the second power supply voltage being equal to the first power supply voltage; or... If the first power supply voltage is not within the preset range, the adjustment includes: adjusting the first power supply voltage to obtain the second power supply voltage, wherein the second power supply voltage is not equal to the first power supply voltage.

5. The display module according to claim 2, characterized in that, The voltage detection information is a voltage adjustment command, and the adjustment includes: increasing or decreasing the first power supply voltage to obtain the second power supply voltage.

6. The display module according to claim 5, characterized in that, If the first power supply voltage is greater than the maximum value of a preset range, the adjustment includes: reducing the first power supply voltage to obtain the second power supply voltage; or, If the first power supply voltage is less than the minimum value of the preset range, the adjustment includes: increasing the first power supply voltage to obtain the second power supply voltage.

7. The display module according to any one of claims 1-6, characterized in that, The voltage detection circuit is integrated into the display screen.

8. An electronic device, characterized in that, The electronic device includes a power management chip and a display module as described in any one of claims 1-7; the power management chip includes a power voltage output terminal; The power management chip's power voltage output terminal is coupled to the power voltage input terminal of the display module's screen.

9. The electronic device according to claim 8, characterized in that, The power management chip also includes a controlled terminal; The power management chip is used to output a third power voltage through the power voltage output terminal during the first time period; and to receive a voltage adjustment command through the controlled terminal during the first time period, wherein the voltage adjustment command is used to instruct to increase or decrease the third power voltage to obtain a fourth power voltage. The power management chip is also used to output the fourth power supply voltage through the power supply voltage output terminal according to the voltage adjustment command during the second time period.

10. The electronic device according to claim 9, characterized in that, The voltage detection information is the voltage value of the first power supply voltage, which is not within the preset range; the electronic device also includes a processor; the controlled end of the power supply is coupled to the processor; The processor is coupled to the second terminal of the voltage detection circuit of the display module; The processor is configured to receive the voltage detection information and output the voltage adjustment command based on the voltage detection information.

11. The electronic device according to claim 9, characterized in that, The voltage detection information is the voltage adjustment command; the controlled terminal of the power supply is coupled to the second terminal of the voltage detection circuit of the display module.

12. A power management chip, characterized in that, The power management chip includes a power voltage output terminal and a controlled terminal; the power voltage output terminal is used to couple the display screen. The power management chip is used to output a first power voltage through the power voltage output terminal during a first time period; and to receive a voltage adjustment command through the controlled terminal during the first time period, wherein the voltage adjustment command is used to instruct to increase or decrease the first power voltage to obtain a second power voltage. The power management chip is also used to output the second power supply voltage through the power supply voltage output terminal according to the voltage adjustment command during the second time period.

13. An electronic device, characterized in that, The electronic device includes a processor, a display screen, and a power management chip as described in claim 12; the display screen is coupled to the power voltage output terminal of the power management chip; the processor is coupled to the controlled terminal of the power management chip; The processor is configured to send the voltage adjustment command to the power management chip during the first time period, based on the display screen to be displayed during the second time period and the first power supply voltage. The image displayed on the screen during the first time period is different from the image displayed on the screen during the second time period.

14. The electronic device according to claim 13, characterized in that, The display screen displays a preset display image during the second time period; and / or, the display brightness of the display screen during the first time period is different from the display brightness of the display screen during the second time period.

15. A power supply method, characterized in that, The device is applied to an electronic device, the electronic device including a power management chip, the power management chip including a power voltage output terminal, the power voltage output terminal being used to couple a display screen, and the power supply method including: The power management chip outputs a first power voltage through the power voltage output terminal during a first time period. The power management chip receives a voltage adjustment command during the first time period. The voltage adjustment command is used to instruct the increase or decrease of the first power supply voltage to obtain the second power supply voltage. In the second time period, the power management chip outputs the second power supply voltage through the power supply voltage output terminal according to the voltage adjustment command.

16. The power supply method according to claim 15, characterized in that, The electronic device further includes the display screen and a voltage detection circuit; the voltage detection circuit includes a first terminal and a second terminal; the display screen includes a power voltage input terminal; the first terminal of the voltage detection circuit and the power voltage output terminal of the power management chip are both coupled to the power voltage input terminal of the display screen. The power supply method further includes: The display screen receives a third power supply voltage through the power supply voltage input terminal during the first time period; and receives a fourth power supply voltage through the power supply voltage input terminal during the second time period. During the first time period, the voltage detection circuit acquires the third power supply voltage through the first terminal and outputs voltage detection information through the second terminal; the voltage detection information is used to characterize the adjustment status of the fourth power supply voltage received by the power supply voltage input terminal during the second time period.

17. The power supply method according to claim 16, characterized in that, The voltage detection information is the voltage value of the first power supply voltage; If the first power supply voltage is not within a preset range, the adjustment includes: adjusting the third power supply voltage to obtain the fourth power supply voltage, wherein the fourth power supply voltage is not equal to the third power supply voltage.

18. The power supply method according to claim 17, characterized in that, The first power supply voltage is not within the preset range, and the electronic device also includes a processor, with the second terminal of the voltage detection circuit and the power management chip both coupled to the processor; The power supply method further includes: During the first time period, the processor receives the voltage detection information and sends a voltage adjustment command to the power management chip based on the voltage detection information.

19. The power supply method according to claim 16, characterized in that, The voltage detection information is the voltage adjustment command, and the adjustment includes: increasing or decreasing the third power supply voltage to obtain the fourth power supply voltage.

20. The power supply method according to claim 19, characterized in that, If the third power supply voltage is greater than the maximum value of the preset range, the adjustment includes: decreasing the third power supply voltage to obtain the fourth power supply voltage; or, if the third power supply voltage is less than the minimum value of the preset range, the adjustment includes: increasing the third power supply voltage to obtain the fourth power supply voltage.

21. The power supply method according to claim 15, characterized in that, The electronic device further includes a processor and a display screen; the display screen is coupled to the power voltage output terminal of the power management chip; the power supply method further includes: During the first time period, the processor sends the voltage adjustment command to the power management chip based on the display screen to be displayed during the second time period and the first power supply voltage. The image displayed on the screen during the first time period is different from the image displayed on the screen during the second time period.

22. The power supply method according to claim 21, characterized in that, The display screen shows a preset display screen during the second time period; And / or, the display brightness of the display screen during the first time period is different from the display brightness of the display screen during the second time period.

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