Brightness adjustment method and device of display panel, and display panel

Abstract

The application provides a display panel brightness adjusting method and device and a display panel. The method comprises the following steps: obtaining a first display brightness value, wherein the first display brightness value is a display brightness value output by a brightness register; in the case that the first display brightness value is less than a first threshold value, outputting a second analog positive voltage value to a digital integrated circuit, wherein the second analog positive voltage value is greater than a first analog positive voltage value; the first analog positive voltage value is a voltage value output by a power management integrated circuit, the second analog positive voltage value is used for the digital integrated circuit to obtain a first gamma correction value, and the first gamma correction value is used for adjusting the brightness of the display panel. Through the above method, the phenomenon of inflection point flashing can be effectively avoided in the process of adjusting the brightness of the display panel, thereby improving the visual experience of the user.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a method, apparatus, and display panel for adjusting the brightness of a display panel. Background Technology

[0002] With the continuous development of organic light-emitting diode (OLED) technology, users' demands for OLED products are constantly increasing. Their expectations extend beyond improved image quality to include more refined brightness adjustment capabilities. In this context, brightness adjustment has become a crucial indicator of OLED product quality. OLED screens with excellent brightness adjustment can provide a more comfortable visual experience based on different ambient lighting conditions and user needs. This adjustment includes not only basic brightness variations but also smooth transitions between different brightness levels.

[0003] Currently, when performing gamma correction, OLED screens use pulse width modulation (PWM) dimming for low brightness and direct current dimming (DC) dimming for high brightness. However, the high load of PWM dimming may cause the actual value of the output gate low (VGLO) to be lower than that output during DC dimming. Furthermore, changes in ambient temperature can also cause fluctuations in the VGLO output, resulting in inflection point flicker. This phenomenon causes OLED screens to flicker, negatively impacting the user experience. Summary of the Invention

[0004] This application provides a method, apparatus, and display panel for adjusting the brightness of a display panel, which can effectively avoid the phenomenon of flicker at the inflection point during the dimming process of the display panel, thereby improving the user's visual experience.

[0005] A first aspect provides a method for adjusting the brightness of a display panel, the display panel comprising: a power management integrated circuit, a brightness register, and a digital integrated circuit, the method comprising: acquiring a first display brightness value, the first display brightness value being a display brightness value output by the brightness register; when the first display brightness value is less than a first threshold, outputting a second analog positive voltage value to the digital integrated circuit, the second analog positive voltage value being greater than the first analog positive voltage value; wherein the first analog positive voltage value is a voltage value output by the power management integrated circuit, the second analog positive voltage value is used by the digital integrated circuit to obtain a first gamma correction value, and the first gamma correction value is used to adjust the brightness of the display panel.

[0006] In one possible implementation, the aforementioned display panel can be a display panel equipped with an OLED screen.

[0007] It should be noted that this application does not limit the type of brightness register. For example, the brightness register can be a 51 register, a 9325 register, etc.

[0008] In this embodiment, the relationship between the first display brightness value and the first threshold can be used to determine the PWM dimming segment corresponding to the first display brightness value, thereby outputting a second analog positive voltage value with a higher voltage value to the digital integrated circuit. In this way, even if a voltage drop occurs in the PWM dimming segment, and / or the external environment changes after the display panel undergoes a bending process, the actual VGLO value output after gamma correction can still reach the set value, thus reducing the occurrence of inflection point flicker and improving the user's visual experience.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: obtaining a second display brightness value, the second display brightness value being a display brightness value output by the brightness register; when the second display brightness value is greater than or equal to the first threshold, outputting a third analog positive voltage value to the digital integrated circuit, the third analog positive voltage value being less than or equal to the first analog positive voltage value, the third analog positive voltage value being used by the digital integrated circuit to obtain a second gamma correction value, the second gamma correction value being used to adjust the brightness of the display panel.

[0010] In one possible implementation, the value of the second gamma correction value can be the same as or different from the first gamma correction value.

[0011] In this embodiment, the relationship between the second display brightness value and the first threshold can be used to determine the DC dimming band corresponding to the second display brightness value, thereby outputting a lower third analog positive voltage value to the digital integrated circuit. In this way, because the number of DC band electromagnetic pulses is less, the screen load on the display panel is smaller, and the lower third analog positive voltage value is output to the digital integrated circuit, which helps to reduce the overall power consumption of the dimming system.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the first threshold is the display brightness value corresponding to the inflection point of the DC dimming segment stored in the brightness register.

[0013] In this embodiment, the first threshold is set to the display brightness value corresponding to the DC dimming segment inflection point stored in the brightness register. In this way, it is beneficial to quickly determine the dimming stage of the current brightness level of the display panel, and then adjust the analog positive voltage value output to the digital integrated circuit.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the first display brightness value corresponds to a first brightness level, and the second display brightness value corresponds to a second brightness level.

[0015] Secondly, a brightness adjustment device for a display panel is provided. The display panel includes a power management integrated circuit, a brightness register, and a digital integrated circuit. The device includes an acquisition unit and a processing unit. The acquisition unit is used to acquire a first display brightness value, which is the display brightness value output by the brightness register. The processing unit is used to output a second analog positive voltage value to the digital integrated circuit when the first display brightness value is less than a first threshold value. The second analog positive voltage value is greater than the first analog positive voltage value. The first analog positive voltage value is the voltage value output by the power management integrated circuit, and the second analog positive voltage value is used by the digital integrated circuit to obtain a first gamma correction value, which is used to adjust the brightness of the display panel.

[0016] In conjunction with the second aspect, in some implementations of the second aspect, the acquisition unit is further configured to acquire a second display brightness value, the second display brightness value being the display brightness value output by the brightness register; the processing unit is further configured to output a third analog positive voltage value to the digital integrated circuit when the second display brightness value is greater than or equal to the first threshold, the third analog positive voltage value being less than or equal to the first analog positive voltage value, the third analog positive voltage value being used by the digital integrated circuit to obtain a second gamma correction value, the second gamma correction value being used to adjust the brightness of the display panel.

[0017] In conjunction with the second aspect, in some implementations of the second aspect, the first threshold is the display brightness value corresponding to the inflection point of the DC dimming segment stored in the brightness register.

[0018] In conjunction with the second aspect, in some implementations of the second aspect, the first display brightness value corresponds to a first brightness level, and the second display brightness value corresponds to a second brightness level.

[0019] Thirdly, a brightness adjustment device for a display panel is provided, comprising: at least one processor and a memory, wherein the at least one processor is coupled to the memory and is used to read and execute instructions in the memory, such that the device implements the method in any of the implementations of the first aspect described above.

[0020] Fourthly, a computer-readable storage medium is provided, the computer-readable storage medium storing program code, which, when run on a computer, causes the computer to perform the method in any of the implementations of the first aspect described above.

[0021] Fifthly, a chip is provided, the chip including circuitry for performing the method in any of the implementations of the first aspect described above.

[0022] Sixthly, a computer program product is provided, the computer product including a computer program that, when the computer program is run by a processor, causes the method in any of the implementations of the first aspect to be executed.

[0023] In a seventh aspect, a display panel is provided, the display panel comprising: a voltage adjustment module, a power management integrated circuit, a brightness register, and a digital integrated circuit; the brightness register is configured to output a first display brightness value to the voltage adjustment module; the voltage adjustment module is configured to output a second analog positive voltage value to the digital integrated circuit when the first display brightness value is less than a first threshold value, the second analog positive voltage value being greater than the first analog positive voltage value, the first analog positive voltage value being a voltage value output by the power management integrated circuit; the digital integrated circuit is configured to perform gamma correction based on the second analog positive voltage value to obtain a first gamma correction value, the first gamma correction value being used to adjust the brightness of the display panel.

[0024] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the brightness register is further configured to output a second display brightness value to the voltage adjustment module; the voltage adjustment module is further configured to output a third analog positive voltage value to the digital integrated circuit when the second display brightness value is greater than or equal to the first threshold, the third analog positive voltage value being less than or equal to the first analog positive voltage value; the digital integrated circuit is further configured to perform gamma correction based on the third analog positive voltage value to obtain a second gamma correction value, the second gamma correction value being used to adjust the brightness of the display panel. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the variation of VGLO with AVDD for a PWM segment, as provided in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram illustrating the change in brightness of an OLED display panel as a function of VGLO, provided in an embodiment of this application.

[0027] Figure 3 This is a schematic flowchart of a brightness adjustment method for a display panel provided in an embodiment of this application;

[0028] Figure 4 This is a schematic flowchart of another brightness adjustment method for a display panel provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of a brightness adjustment device for a display panel provided in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of another brightness adjustment device for a display panel provided in an embodiment of this application. Detailed Implementation

[0031] In the description of the embodiments in this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or multiple items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0032] The use of prefixes such as "first" and "second" in this application embodiment is solely for distinguishing different descriptive objects and does not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes to distinguish descriptive objects in this application embodiment does not constitute a limitation on the described objects. The description of the described objects is found in the claims or the context of the embodiments, and the use of such prefixes should not constitute unnecessary restrictions.

[0033] To better understand this application, the terminology used in this application will first be explained and clarified.

[0034] (1) Analog voltage supply (AVDD): Provides a stable analog power supply for digital integrated circuits (DIC). This voltage is used to generate the various voltages required for OLED screens to ensure proper driving and display of each pixel.

[0035] (2) Digital drive voltage (VDDI): The voltage used to provide power to the digital circuitry in the display panel. The digital circuitry can process input signals (such as video signals) and generate control signals, which are used to adjust the pixel state of the display panel to display images.

[0036] (3) VGLO: The negative voltage output of DIC to the OLED screen is used to control the TFT on state.

[0037] (4) Power management integrated circuits (PMIC): These are integrated circuits used to manage the power system in electronic devices. The main function of PMIC is to optimize the distribution, regulation and control of power to ensure the stable and efficient operation of OLED electronic products.

[0038] (5) Gate high voltage (VGH): Used to control the off state of the TFT. It is usually a positive voltage and ensures that the TFT can effectively isolate the pixel when it is off.

[0039] (6) Inflection point flicker: This refers to the phenomenon that when the brightness of a display screen using PWM dimming technology is adjusted to a certain brightness level, periodic flickering or sudden brightness changes may occur due to unstable power supply voltage or insufficient dimming circuit capability.

[0040] (7) PWM dimming technology: The brightness is adjusted by quickly switching the display panel on and off. In PWM dimming technology, changing the duty cycle of the switch (the ratio of the time when it is on and off) can control the time when the current flows through the light-emitting layer, thereby achieving the purpose of adjusting the brightness.

[0041] (8) DC dimming technology: The brightness of the display is controlled by directly adjusting the DC power supply voltage of the display and controlling the current flowing through the light-emitting layer.

[0042] (9) Display brightness value (DVB) and brightness band: DBV is a set of values ​​in DIC that control brightness, usually ranging from 0 to 4095. The larger the DBV value, the higher the brightness, which can be equated to the brightness bar on a mobile phone. Brightness bands are multiple representative DBV values ​​that are manually selected for gamma correction or other settings. The data voltage of DBV between brightness bands is calculated by DIC.

[0043] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0044] With the continuous development of organic light-emitting diode (OLED) technology, users' demands for OLED products are constantly increasing. Their expectations extend beyond improved image quality to include more refined brightness adjustment capabilities. In this context, brightness adjustment has become a crucial indicator of OLED product quality. OLED screens with excellent brightness adjustment can provide a more comfortable visual experience based on different ambient lighting conditions and user needs. This adjustment includes not only basic brightness variations but also smooth transitions between different brightness levels.

[0045] Currently, OLED screens use fixed AVDD and VDDI voltages to generate VGLO and VGH for all brightness levels. During gamma correction, PWM dimming is used for low brightness and DC dimming for high brightness. Because PWM dimming has a higher load, this power supply method is affected by the charge pump's capability, resulting in a lower actual VGLO value output by the PWM segment compared to the DC segment. Furthermore, significant temperature variations in the integrated circuit's environment cause large fluctuations in the output VGLO value, leading to changes in brightness after PWM dimming and consequently, flickering at the OLED screen's inflection point. Increasing the AVDD value or changing the OLED screen's power supply method directly could increase the integrated circuit's power consumption, while decreasing the VGLO setting could degrade image quality, thus affecting the user's visual experience.

[0046] This application tested the relationship between the absolute value of AVDD and VGLO of the OLED screen in the PWM dimming segment, such as... Figure 1 As shown, within the tested AVDD range (7.1V to 7.7V), as AVDD increases, the absolute value of VGLO gradually approaches the set value (7.5V). In the PWM segment, when AVDD is low (e.g., AVDD is 7.1V to 7.3V), the difference between the absolute value of the output VGLO and the set value is large. When AVDD is high (e.g., AVDD is 7.5V to 7.7V), the difference between the absolute value of the output VGLO and the set value is small. In contrast, in the DC segment, within the above test range, the difference between the measured value and the set value of the output VGLO is consistently small. Figure 1 (Not shown).

[0047] The principle behind the above results is as follows: the number of electromagnetic pulses in the DC segment is 1, while the number of electromagnetic pulses in the PWM segment is 32. This results in a larger load in the PWM segment, which may cause a voltage drop in the VGLO output of the DIC in the PWM segment, making the absolute value of the actual VGLO output by the DIC lower than the set value. As AVDD increases, the power supply capacity of AVDD and VDDI is enhanced, which can reduce the voltage drop of VGLO to a certain extent, allowing the VGLO output by the DIC in the PWM segment to approach the set value.

[0048] This application also tested the relationship between the brightness of the OLED screen and VGLO, such as Figure 2 As shown, the brightness of the OLED screen increases as the absolute value of VGLO decreases. The principle behind this result is that VGLO controls the on-state of the OLED's TFTs. The smaller the absolute value of VGLO, the smaller the absolute value of the reset voltage Vinit2 that charges the OLED anode during the reset phase. Since this value is negative, when the electromagnetic pulse is activated, the source voltage reaches the OLED anode. Since this voltage is positive, the combined effect of these two voltages results in a greater voltage difference between the OLED anode and cathode, leading to higher screen brightness.

[0049] This application also explores the cause of the inflection point flicker phenomenon. After gamma correction, the OLED screen undergoes a bending process. Following this bending, a heat dissipation film is applied to the integrated circuit, resulting in a lower temperature for the OLED screen during normal display compared to before bending. Consequently, the efficiency of the DIC's charge pump differs depending on temperature before and after bending. Since the PWM segment already experiences a VGLO voltage drop, it is more significantly affected by temperature. Therefore, although gamma correction before bending brings the output VGLO close to the set value, the temperature change of the DIC after bending causes a larger deviation between the output VGLO value (with the same gamma correction) and the set value, leading to the inflection point flicker phenomenon.

[0050] Based on the above exploration process, this application provides a method, device and display panel for adjusting the brightness of a display panel. The above method can effectively avoid the phenomenon of inflection point flicker during the dimming process of the display panel, thereby improving the user's visual experience.

[0051] Figure 3 This is a schematic flowchart of a brightness adjustment method for a display panel provided in an embodiment of this application. Method 300 can be applied to a display panel. The execution subject of method 300 can be a voltage adjustment module. The display panel includes a power management integrated circuit, a brightness register, and a digital integrated circuit. Method 300 may include steps S301 and S302.

[0052] S301, Obtain the first display brightness value.

[0053] The first display brightness value is the display brightness value output by the brightness register.

[0054] Optionally, the aforementioned display panel may be a display panel equipped with an OLED screen.

[0055] It should be noted that this application does not limit the type of brightness register. For example, the brightness register can be a 51 register, a 9325 register, etc.

[0056] S302, when the first display brightness value is less than the first threshold, outputs a second analog positive voltage value to the digital integrated circuit.

[0057] The second analog positive voltage value is greater than the first analog positive voltage value. The first analog positive voltage value is the voltage value output by the power management integrated circuit. The second analog positive voltage value is used by the digital integrated circuit to obtain the first gamma correction value, which is used to adjust the brightness of the display panel.

[0058] In this embodiment, the relationship between the first display brightness value and the first threshold can be used to determine the PWM dimming segment corresponding to the first display brightness value, thereby outputting a second analog positive voltage value with a higher voltage value to the digital integrated circuit. In this way, even if a voltage drop occurs in the PWM dimming segment, and / or the external environment changes after the display panel undergoes a bending process, the actual VGLO value output after gamma correction can still reach the set value, thus reducing the occurrence of inflection point flicker and improving the user's visual experience.

[0059] In one possible implementation, after step S302, method 300 further includes: obtaining a second display brightness value, the second display brightness value being the display brightness value output by the brightness register; if the second display brightness value is greater than or equal to a first threshold, outputting a third analog positive voltage value to the digital integrated circuit, the third analog positive voltage value being less than or equal to the first analog positive voltage value, the third analog positive voltage value being used by the digital integrated circuit to obtain a second gamma correction value, the second gamma correction value being used to adjust the brightness of the display panel.

[0060] Optionally, the value of the second gamma correction value can be the same as or different from the first gamma correction value.

[0061] Optionally, the first threshold is the display brightness value corresponding to the inflection point of the DC dimming segment stored in the brightness register.

[0062] Optionally, the first display brightness value corresponds to a first brightness level, and the second display brightness value corresponds to a second brightness level. The first brightness level may be higher than the second brightness level, or the first brightness level may be lower than the second brightness level; this application does not impose any limitations on this.

[0063] In this embodiment, the relationship between the second display brightness value and the first threshold can be used to determine the DC dimming band corresponding to the second display brightness value, thereby outputting a lower third analog positive voltage value to the digital integrated circuit. In this way, because the number of DC band electromagnetic pulses is less, the load on the display panel screen is smaller, and the lower third analog positive voltage value is output to the digital integrated circuit, which helps to reduce the overall power consumption of the dimming system.

[0064] Figure 4 This is a schematic flowchart of another brightness adjustment method for a display panel provided in the embodiments of this application. Method 400 is a detailed description of steps S301 and S302 in method 300. Method 400 may include steps S401 to S408.

[0065] S401, enter the current brightness level.

[0066] For example, the current brightness level is the first brightness level in method 300.

[0067] S402, obtain the current DBV value a and the DBV value b of the DC segment at the inflection point.

[0068] For example, a can be a first display brightness value in method 300, and b can be a first threshold value in method 300.

[0069] S403, determine whether a is greater than or equal to b.

[0070] Specifically, if a is less than b, it indicates that the current brightness level belongs to the PWM dimming segment. Since the number of electromagnetic pulses for PWM dimming is large and the screen load is large, a larger power supply voltage is required to ensure that the actual VGLO value output after PWM dimming is close to the set value. Therefore, step S404 can be performed. If a is greater than or equal to b, it indicates that the current brightness level belongs to the DC dimming segment. Since the number of electromagnetic pulses for DC dimming is small and the screen load is small, the power supply voltage can be reduced. That is, if the original AVDD value output by the PMIC is obtained, the original value can be reduced and a smaller AVDD value can be output to the DIC to perform gamma correction.

[0071] The original AVDD value can correspond to the first simulated positive voltage value in method 300, and the smaller AVDD value can correspond to the third simulated positive voltage value in method 300.

[0072] For example, the original value of AVDD is 7.3V, and the smaller AVDD is 7.2V.

[0073] S404 regulates the voltage and outputs a larger AVDD to DIC.

[0074] Specifically, before step S404, the original value of AVDD output by the PMIC can be obtained, and a larger AVDD can be obtained based on the original value of AVDD. The larger AVDD is then output to the DIC, where the larger AVDD can correspond to the third analog positive voltage value in method 300.

[0075] For example, the original value of AVDD is 7.3V, and a larger AVDD is 7.4V.

[0076] S405 performs gamma correction to obtain the gamma correction value.

[0077] Gamma correction is a technique used to adjust the brightness and contrast of an image or display system. By using a gamma function and gamma correction values, it ensures consistent image display across different devices. This correction guarantees that the image's color and brightness conform to the perceptual characteristics of the human eye and the display characteristics of the device, thereby improving the accuracy and consistency of visual effects.

[0078] Optionally, the above gamma correction value can correspond to the first gamma correction value in method 300.

[0079] S406, determine whether the gamma correction has passed.

[0080] Specifically, if the gamma correction passes, proceed to step S407; otherwise, method 400 can be terminated.

[0081] S407 determines whether the current brightness level is the last brightness level.

[0082] Specifically, if the current brightness level is the last brightness level, method 400 can be terminated; otherwise, step S408 can be performed.

[0083] S408, proceed to the next brightness level.

[0084] For example, the next brightness level can be the second brightness level in method 300.

[0085] In this embodiment, the dimming segment of the current brightness level can be determined based on the current DBV value and the DBV value of the DC segment at the inflection point, thereby controlling the AVDD value output to the DIC. In this way, the phenomenon of inflection point flicker can be effectively avoided during the dimming process of the display panel, thereby improving the user's visual experience.

[0086] Alternatively, the AVDD value corresponding to the brightness level of the PWM segment at the inflection point can be increased, while other brightness levels use the same AVDD value as the DC segment. This can also effectively avoid the phenomenon of inflection point flicker. However, this approach may result in a certain difference between the actual brightness and the target brightness of other brightness levels in the PWM segment after gamma correction. In addition, if the power consumption of the dimming system is not considered, AVDD can be set to a relatively high fixed value throughout the dimming process to avoid the phenomenon of inflection point flicker.

[0087] It should be understood that, in the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced by each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0088] This application also provides an apparatus for implementing any of the above methods, the apparatus including units for implementing each step performed in any of the above methods.

[0089] Figure 5 This is a schematic diagram of a brightness adjustment device for a display panel according to an embodiment of this application. The device 500 may include an acquisition unit 510, a storage unit 520, and a processing unit 530. The acquisition unit 510 is used to acquire instructions and / or data, and may also be referred to as a communication interface or communication unit. The storage unit 520 is used to implement corresponding storage functions and store corresponding instructions and / or data. The processing unit 530 is used to perform data processing so that the device 500 implements the aforementioned brightness adjustment method for the display panel.

[0090] The device 500 can be applied to a display panel, which includes a power management integrated circuit, a brightness register, and a digital integrated circuit. The device 500 includes an acquisition unit 510 and a processing unit 530. The acquisition unit 510 is used to acquire a first display brightness value, which is the display brightness value output by the brightness register. The processing unit 530 is used to output a second analog positive voltage value to the digital integrated circuit when the first display brightness value is less than a first threshold value. The second analog positive voltage value is greater than the first analog positive voltage value. The first analog positive voltage value is the voltage value output by the power management integrated circuit, and the second analog positive voltage value is used by the digital integrated circuit to obtain a first gamma correction value. The first gamma correction value is used to adjust the brightness of the display panel.

[0091] In one possible implementation, the acquisition unit 510 is further configured to acquire a second display brightness value, which is the display brightness value output by the brightness register; the processing unit 530 is further configured to output a third analog positive voltage value to the digital integrated circuit when the second display brightness value is greater than or equal to a first threshold, the third analog positive voltage value being less than or equal to the first analog positive voltage value, the third analog positive voltage value being used by the digital integrated circuit to obtain a second gamma correction value, and the second gamma correction value being used to adjust the brightness of the display panel.

[0092] In one possible implementation, the first threshold is the display brightness value corresponding to the inflection point of the DC dimming segment stored in the brightness register.

[0093] In one possible implementation, the first display brightness value corresponds to a first brightness level, and the second display brightness value corresponds to a second brightness level.

[0094] Figure 6 This is a schematic diagram of another brightness adjustment device 600 for a display panel provided in this application embodiment. The device 600 includes a memory 610, a processor 620, and a communication interface 630. The memory 610, processor 620, and communication interface 630 are connected via an internal connection path. The memory 610 stores instructions, and the processor 620 executes the instructions stored in the memory 610 to control the communication interface 630 to acquire information, or to enable the device 600 to implement the aforementioned brightness adjustment method for the display panel. Optionally, the memory 610 can be coupled to the processor 620 via an interface, or it can be integrated with the processor 620.

[0095] It should be noted that the communication interface 630 described above uses a transceiver device, such as, but not limited to, a transceiver. The communication interface 630 may also include an input / output interface.

[0096] The processor 620 stores one or more computer programs, which include instructions. When the instructions are executed by the processor 620, the device 600 performs the brightness adjustment method of the display panel in the above embodiments.

[0097] In implementation, each step of the above method can be completed by the integrated logic circuitry of the hardware in the processor 620 or by instructions in software form. The method disclosed in the embodiments of this application can be directly implemented by the hardware processor, or by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 610, and the processor 620 reads the information in memory 610 and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are not provided here.

[0098] Optionally, Figure 6 The communication interface 630 in the middle can achieve Figure 5 The acquisition unit 510 in the middle, Figure 6 The memory 610 in the middle can achieve Figure 5 Storage unit 520 in the middle, Figure 6 The processor 620 in the middle can achieve Figure 5 The processing unit 530 in the middle.

[0099] This application also provides a computer-readable storage medium storing program code that, when executed on a computer, causes the computer to perform the above-described... Figure 3 or Figure 4 Any of the methods mentioned above.

[0100] This application also provides a computer program product, which includes a computer program that, when run, causes the computer to perform the above-described actions. Figure 3 or Figure 4 Any of the methods mentioned above.

[0101] This application embodiment also provides a display panel, which includes: a voltage adjustment module, a power management integrated circuit, a brightness register, and a digital integrated circuit; the brightness register is used to output a first display brightness value to the voltage adjustment module; the voltage adjustment module is used to output a second analog positive voltage value to the digital integrated circuit when the first display brightness value is less than a first threshold, the second analog positive voltage value being greater than the first analog positive voltage value, the first analog positive voltage value being the voltage value output by the power management integrated circuit; the digital integrated circuit is used to perform gamma correction based on the second analog positive voltage value to obtain a first gamma correction value, the first gamma correction value being used to adjust the brightness of the display panel.

[0102] In one possible implementation, the brightness register is further configured to output a second display brightness value to the voltage adjustment module; the voltage adjustment module is further configured to output a third analog positive voltage value to the digital integrated circuit when the second display brightness value is greater than or equal to a first threshold, wherein the third analog positive voltage value is less than or equal to the first analog positive voltage value; the digital integrated circuit is further configured to perform gamma correction based on the third analog positive voltage value to obtain a second gamma correction value, wherein the second gamma correction value is used to adjust the brightness of the display panel.

[0103] Those skilled in the art will recognize that the units 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.

[0104] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0105] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0106] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0107] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0108] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0109] 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 method for adjusting the brightness of a display panel, characterized in that, The display panel includes a power management integrated circuit, a brightness register, and a digital integrated circuit; the method includes: Obtain a first display brightness value, which is the display brightness value output by the brightness register; When the first display brightness value is less than the first threshold, a second analog positive voltage value is output to the digital integrated circuit, wherein the second analog positive voltage value is greater than the first analog positive voltage value; Wherein, the first analog positive voltage value is the voltage value output by the power management integrated circuit, the second analog positive voltage value is used by the digital integrated circuit to obtain the first gamma correction value, and the first gamma correction value is used to adjust the brightness of the display panel.

2. The method as described in claim 1, characterized in that, The method further includes: Obtain a second display brightness value, which is the display brightness value output by the brightness register; When the second display brightness value is greater than or equal to the first threshold, a third analog positive voltage value is output to the digital integrated circuit. The third analog positive voltage value is less than or equal to the first analog positive voltage value. The third analog positive voltage value is used by the digital integrated circuit to obtain a second gamma correction value. The second gamma correction value is used to adjust the brightness of the display panel.

3. The method as described in claim 1 or 2, characterized in that, The first threshold is the display brightness value corresponding to the inflection point of the DC dimming band stored in the brightness register.

4. The method as described in claim 2, characterized in that, The first display brightness value corresponds to the first brightness level, and the second display brightness value corresponds to the second brightness level.

5. A brightness adjustment device for a display panel, characterized in that, The display panel includes a power management integrated circuit, a brightness register, and a digital integrated circuit; the device includes an acquisition unit and a processing unit. The acquisition unit is used to acquire a first display brightness value, wherein the first display brightness value is the display brightness value output by the brightness register; The processing unit is configured to output a second analog positive voltage value to the digital integrated circuit when the first display brightness value is less than a first threshold, wherein the second analog positive voltage value is greater than the first analog positive voltage value; Wherein, the first analog positive voltage value is the voltage value output by the power management integrated circuit, the second analog positive voltage value is used by the digital integrated circuit to obtain the first gamma correction value, and the first gamma correction value is used to adjust the brightness of the display panel.

6. The apparatus as claimed in claim 5, characterized in that, The acquisition unit is further configured to acquire a second display brightness value, wherein the second display brightness value is the display brightness value output by the brightness register; The processing unit is further configured to output a third analog positive voltage value to the digital integrated circuit when the second display brightness value is greater than or equal to the first threshold. The third analog positive voltage value is less than or equal to the first analog positive voltage value. The third analog positive voltage value is used by the digital integrated circuit to obtain a second gamma correction value. The second gamma correction value is used to adjust the brightness of the display panel.

7. The apparatus as described in claim 5 or 6, characterized in that, The first threshold is the display brightness value corresponding to the inflection point of the DC dimming band stored in the brightness register.

8. The apparatus as claimed in claim 6, characterized in that, The first display brightness value corresponds to the first brightness level, and the second display brightness value corresponds to the second brightness level.

9. A brightness adjustment device for a display panel, characterized in that, The device includes a processor and a memory, the processor being coupled to the memory, the memory being used to store computer programs or instructions, and the processor being used to execute the computer programs or instructions in the memory, such that the method of any one of claims 1 to 4 is performed.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores program code that, when executed on a computer, causes the computer to perform the method as described in any one of claims 1 to 4.

11. A display panel, characterized in that, The display panel includes: a voltage regulation module, a power management integrated circuit, a brightness register, and a digital integrated circuit; The brightness register is used to output a first display brightness value to the voltage adjustment module; The voltage regulation module is used to output a second analog positive voltage value to the digital integrated circuit when the first display brightness value is less than a first threshold. The second analog positive voltage value is greater than the first analog positive voltage value, and the first analog positive voltage value is the voltage value output by the power management integrated circuit. The digital integrated circuit is used to perform gamma correction based on the second analog positive voltage value to obtain a first gamma correction value, and the first gamma correction value is used to adjust the brightness of the display panel.

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