Brightness adjustment apparatus and brightness adjustment method

Abstract

A brightness adjustment apparatus and a brightness adjustment method, which belong to the technical field of display, and can solve the problem of the display brightness of existing display panels at a low OPR being relatively low. The brightness adjustment apparatus comprises: a first display control unit (101), which is configured to control, on the basis of a previous display picture frame, each pixel unit of a display panel to perform display; a first brightness control unit (102), which is configured to enable a resistance voltage drop compensation function on the basis of the distance between each pixel unit and a driving chip, so as to adjust the brightness of each pixel unit; a second display control unit (103), which is configured to control, on the basis of a current display picture frame, some pixel units of the display panel to perform display when the ratio of the number of pixel units corresponding to the current display picture frame to the number of pixel units corresponding to a previous display picture frame is less than or equal to a threshold value; and a second brightness control unit (104), which is configured to disable the resistance voltage drop compensation function, so as to adjust the brightness of some pixel units.

Description

Brightness adjustment device and brightness adjustment method Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a brightness adjustment device and a brightness adjustment method. Background Art

[0002] Organic Light Emitting Diode (OLED) display panels have the characteristics of self-luminescence, wide viewing angle, high contrast, fast response speed, low power consumption, and ultra-lightness, and are widely used in the industry.

[0003] Currently, the brightness adjustment process of OLED display panels can be achieved through various methods, such as pulse width modulation signal dimming or voltage source voltage dimming. However, for display panels with a low open pixel ratio (OPR), that is, display panels with a low display ratio of pixels corresponding to the displayed image, it is difficult to achieve a high brightness level. For example, with an OPR of 1%, the brightness of the display panel may only reach 1317 nits. If the user requires higher brightness, it is difficult to meet the user's needs due to the characteristics of the display panel and the brightness design of the display module.

[0004] Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides a brightness adjustment device and a brightness adjustment method.

[0006] In a first aspect, an embodiment of the present disclosure provides a brightness adjustment device, applied to a display panel, wherein the brightness adjustment device is used to adjust the brightness of pixel units of the pixel panel according to the number of pixel units corresponding to a display image to be displayed; the brightness adjustment device includes:

[0007] a first display control unit, configured to control each pixel unit of the display panel to display according to a previous frame of display image;

[0008] a first brightness control unit configured to activate a resistance voltage drop compensation function according to the distance between each pixel unit and the driver chip, so as to adjust the brightness of each pixel unit;

[0009] a second display control unit configured to control some pixel units of the display panel to display according to the current frame display picture when a ratio of the number of pixel units corresponding to the current frame display picture to the number of pixel units corresponding to the previous frame display picture is less than or equal to a threshold;

[0010] The second brightness control unit is configured to turn off the resistance voltage drop compensation function to adjust the brightness of some pixel units.

[0011] In some embodiments, the brightness adjustment device further includes:

[0012] A first brightness curve generating unit is configured to establish a first brightness curve according to the brightness of each pixel unit and the data voltage;

[0013] a second brightness curve generating unit configured to establish a second brightness curve according to the first brightness curve; wherein the curvature of the second brightness curve is greater than the curvature of the first brightness curve;

[0014] The third brightness control unit is configured to input corresponding data voltages to some pixel units based on the second brightness curve.

[0015] In some embodiments, the brightness adjustment device further includes:

[0016] A first gamma curve generating unit is configured to create a first gamma curve according to the brightness and data voltage of each pixel unit;

[0017] a second gamma curve generating unit configured to create a second gamma curve based on the first gamma curve; the number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve;

[0018] The fourth brightness control unit is configured to input corresponding gamma voltages to some pixel units based on the second gamma curve.

[0019] In some embodiments, the brightness adjustment device further includes:

[0020] The display mode detection unit is configured to determine the number of pixel units corresponding to the display image to be displayed according to the display scene.

[0021] In some embodiments, the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is 1% to 20%.

[0022] In some embodiments, the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is different, and the brightness of the current frame display image is different from the brightness of the previous frame display image.

[0023] In some embodiments, the brightness corresponding to the previous frame of the display image is 1000 nits to 1500 nits; the brightness corresponding to the current frame of the display image is 1500 nits to 2000 nits.

[0024] In a second aspect, an embodiment of the present disclosure provides a brightness adjustment method applied to a display panel, wherein the brightness adjustment method includes:

[0025] Controlling each pixel unit of the display panel to display according to the last frame of display image;

[0026] According to the distance between each pixel unit and the driver chip, the resistance voltage drop compensation function is turned on to adjust the brightness of each pixel unit;

[0027] When the ratio of the number of pixel units corresponding to the current frame display picture to the number of pixel units corresponding to the previous frame display picture is less than or equal to a threshold value, controlling some pixel units of the display panel to display according to the current frame display picture;

[0028] Turn off the resistance voltage drop compensation function to adjust the brightness of some pixel units.

[0029] In some embodiments, the step of disabling the resistance voltage drop compensation function to adjust the brightness of some pixel units further includes:

[0030] Establishing a first brightness curve according to the brightness and data voltage of each pixel unit;

[0031] Establishing a second brightness curve based on the first brightness curve; wherein the curvature of the second brightness curve is greater than the curvature of the first brightness curve;

[0032] Based on the second brightness curve, corresponding data voltages are input to some pixel units.

[0033] In some embodiments, after inputting corresponding data voltages to some pixel units based on the second brightness curve, the method further includes:

[0034] Establishing a first gamma curve according to the brightness and data voltage of each pixel unit;

[0035] establishing a second gamma curve based on the first gamma curve; wherein the number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve;

[0036] Based on the second gamma curve, corresponding gamma voltages are input to some pixel units.

[0037] In a third aspect, an embodiment of the present disclosure provides an electronic device, wherein the electronic device includes:

[0038] at least one processor; and

[0039] a memory communicatively connected to the at least one processor; wherein,

[0040] The memory stores one or more computer programs that can be executed by the at least one processor. The one or more computer programs are executed by the at least one processor to enable the at least one processor to perform the brightness adjustment method provided above.

[0041] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which implements the brightness adjustment method provided above when executed by a processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic structural diagram of a brightness adjustment device provided in an embodiment of the present disclosure.

[0043] FIG2 is a schematic diagram of brightness of a display panel provided in an embodiment of the present disclosure.

[0044] FIG3 is a schematic structural diagram of another brightness adjustment device provided in an embodiment of the present disclosure.

[0045] FIG4 is a schematic diagram of brightness of another display panel provided by an embodiment of the present disclosure.

[0046] FIG5 is a schematic structural diagram of another brightness adjustment device provided in an embodiment of the present disclosure.

[0047] FIG6 is a schematic diagram of brightness of another display panel provided by an embodiment of the present disclosure.

[0048] FIG7 is a flow chart of a brightness adjustment method provided in an embodiment of the present disclosure.

[0049] FIG8 is a flow chart of another brightness adjustment method provided in an embodiment of the present disclosure.

[0050] FIG9 is a flow chart of another brightness adjustment method provided in an embodiment of the present disclosure.

[0051] FIG10 is a schematic structural diagram of an electronic device provided in some embodiments of the present disclosure. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0053] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0054] Current OLED display panels require data remapping to achieve high grayscale compensation. For example, grayscale 255 is mapped to grayscale 239 or lower, meaning the input is grayscale 255 and the output is grayscale 239. This requires tuning the brightness of grayscale 255 to a higher level, which is a very high challenge for OLED display panels. When the maximum brightness of an OLED display panel needs to reach 1000 nits, if grayscale 255 is mapped to 239, the brightness corresponding to grayscale 239 is 1000 nits, and grayscale 255 needs to reach 1317 nits, which is far from meeting the brightness requirement of 2000 nits at 1% OPR.

[0055] In order to solve at least one of the above technical problems, the embodiments of the present disclosure provide a brightness adjustment device and a brightness adjustment method. The brightness adjustment device and the brightness adjustment method provided by the embodiments of the present disclosure will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0056] In a first aspect, embodiments of the present disclosure provide a brightness adjustment device for use with a display panel, wherein the brightness adjustment device is configured to adjust the brightness of pixel units of a pixel panel based on the number of pixel units corresponding to a display image to be displayed. FIG1 is a schematic structural diagram of a brightness adjustment device provided by an embodiment of the present disclosure. As shown in FIG1 , the brightness adjustment device includes: a first display control unit 101, a first brightness control unit 102, a second display control unit 103, and a second brightness control unit 104.

[0057] The first display control unit 101 is configured to control each pixel unit of the display panel to display according to the last frame of display picture.

[0058] In conventional applications, the light-emitting devices of all pixel units in a display panel emit light, i.e., full-screen display, to show more content. At the same time, to ensure the display effect, the brightness of each pixel unit is the same, for example, the brightness of each pixel unit is 1000 nits, to avoid the problem of uneven display.

[0059] The first brightness control unit 102 is configured to enable a resistance voltage drop compensation function according to the distance between each pixel unit and the driving chip, so as to adjust the brightness of each pixel unit.

[0060] The display panel is primarily driven by driver chips, namely the Display Driver Integrated Circuit (DDIC) and the Power Management Integrated Circuit (PMIC). The DDIC provides digital and analog signals, driving the thin-film transistors within the display panel and writing data voltages (Source Data). The PMIC provides DC power signals ELVDD (positive) and ELVSS (negative), which are responsible for driving the light-emitting devices within the display panel. Due to the varying distances between the pixels at various locations on the display panel and the DDIC, the data voltage signal is attenuated during transmission, resulting in varying brightness at different locations on the display panel. To improve the brightness uniformity of the display panel, IR-drop compensation (IRC) is required. This involves using the actual ELVDD voltage of a standard area as the target voltage and using the difference between the actual ELVDD voltage and the target voltage in each area to be compensated as the voltage compensation for the ELVDD signal in each area to be compensated.

[0061] The second display control unit 103 is configured to control some of the pixel units on the display panel to display the current frame when the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is less than or equal to a threshold value. The second brightness control unit 104 is configured to disable the resistance voltage drop compensation function to adjust the brightness of some of the pixel units.

[0062] In practical applications, the display mode of the display panel can be detected. For example, the display panel switches from a full-screen display state to a fingerprint recognition display state. In the fingerprint recognition display state, only the pixel units corresponding to the fingerprint recognition area are displayed. It can be determined that the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is less than or equal to a threshold value, such as 1% to 20%, specifically 1%. At this time, the 1% number of pixel units can be controlled to display, and the resistance drop compensation function can be turned off. Since the display area of ​​the display panel is small when displaying the current frame, the resistance drop in the display area is small. By turning off the resistance drop compensation function of the display panel, the brightness value of the display panel can be effectively improved to a certain extent, and the uneven display problem can be avoided. It can be understood that the display state under the above-mentioned low OPR can also be a high dynamic range image (HDR) display state.

[0063] FIG2 is a schematic diagram of the brightness of a display panel provided by an embodiment of the present disclosure. FIG2 shows that when the display area is between 20% and 100%, the resistance drop compensation function can be enabled to compensate for each pixel unit in the display panel, thereby ensuring the display effect of the display panel and avoiding the occurrence of uneven display. When the display area is between 1% and 20%, the resistance drop compensation function can be disabled, and the characteristics of the display panel can be utilized to effectively improve the brightness of the display panel to a certain extent, thereby meeting the user's requirements for low OPR and high brightness.

[0064] In some embodiments, FIG3 is a structural diagram of another brightness adjustment device provided in an embodiment of the present disclosure. As shown in FIG3 , the brightness adjustment device further includes: a first brightness curve generating unit 105 , a second brightness curve generating unit 106 and a third brightness control unit 107 .

[0065] The first brightness curve generating unit 105 is configured to create a first brightness curve according to the brightness of each pixel unit and the data voltage.

[0066] In order to achieve high grayscale compensation, a data remapping function is required to achieve high grayscale compensation. For example, grayscale 255 can be mapped to grayscale 239 or lower, that is, input grayscale 255 and output grayscale 239. Figure 4 is a brightness diagram of another display panel provided by an embodiment of the present disclosure. As shown in Figure 4, the corresponding relationship between the actual display brightness of the display panel and the actual data voltage is shown in the first brightness curve of Figure 4. Data mapping can be used to map higher data voltages to lower data voltages to save energy.

[0067] The second brightness curve generating unit 106 is configured to create a second brightness curve according to the first brightness curve; the curvature of the second brightness curve is greater than the curvature of the first brightness curve.

[0068] A second brightness curve can be established based on the first brightness curve. The second brightness curve is the correspondence between the display brightness and the data voltage before data mapping is performed. It can be seen that the curvature of the second brightness curve is greater than the curvature of the first brightness curve. Similarly, under the data voltage of 255 grayscales, the brightness of the display panel can be increased from the original 1500nit to 1800nit, which can effectively improve the brightness of the display panel under low OPR.

[0069] The third brightness control unit 107 is configured to input corresponding data voltages to some pixel units based on the second brightness curve.

[0070] The display mode of the display panel can be detected. For example, when the display panel switches from a full-screen display state to a fingerprint recognition display state, in which only the pixel units corresponding to the fingerprint recognition area are displayed, it can be determined that the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is less than or equal to a threshold value, such as 1% to 20%, specifically 1%. At this time, the 1% number of pixel units can be controlled to display, and at the same time, based on the second brightness curve, corresponding data voltages are input to some pixel units, which can effectively improve the brightness of the display panel under low OPR.

[0071] In some embodiments, FIG5 is a structural diagram of another brightness adjustment device provided by an embodiment of the present disclosure. As shown in FIG5 , the brightness adjustment device further includes: a first gamma curve generation unit 108 , a second gamma curve generation unit 109 and a fourth brightness control unit 110 .

[0072] The first gamma curve generating unit 108 is configured to create a first gamma curve according to the brightness and data voltage of each pixel unit.

[0073] Gamma voltage can control the brightness and contrast of the display panel, adjusting the brightness and contrast of the display panel to make the displayed image clearer, brighter, and more vivid. Figure 6 is a schematic diagram of the brightness of another display panel provided by an embodiment of the present disclosure. As shown in Figure 6, the corresponding relationship between the actual display brightness of the display panel and the actual gamma voltage is shown in the first gamma curve of Figure 6, which can make the display panel have a higher contrast.

[0074] The second gamma curve generating unit 109 is configured to create a second gamma curve according to the first gamma curve; the number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve.

[0075] The R / G / B voltage values ​​at the gamma value binding points of 1021, 1022, 1023, etc. (taking 10 bits as an example) can be predicted in advance to form a second gamma curve. The number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve. The specific implementation method is to manually adjust the above binding points during the gamma adjustment process to achieve a gamma value that meets the color coordinates and brightness, and then apply this gamma value to other display panels. The gamma value derived in this way may not be particularly accurate, but because low OPR is a special application scenario and the brightness is very high, a slight color deviation will not be easily discovered. When assuming that the driver chip output is 11 bits, the same prediction is made at different binding points. Make the corresponding LUT table, as shown in the table below.

[0076] The fourth brightness control unit 110 is configured to input corresponding gamma voltages to some pixel units based on the second gamma curve.

[0077] The display mode of the display panel can be detected. For example, when the display panel switches from a full-screen display state to a fingerprint recognition display state, in which only the pixel units corresponding to the fingerprint recognition area are displayed, it can be determined that the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is less than or equal to a threshold value, such as 1% to 20%, specifically 1%. At this time, the 1% number of pixel units can be controlled to display, and at the same time, based on the second gamma curve, the corresponding gamma voltage is input to some pixel units, which can effectively improve the brightness of the display panel at low OPR.

[0078] In some embodiments, the brightness adjustment device further includes: a display mode detection unit (not shown in the figure).

[0079] The display mode detection unit is configured to determine the number of pixel units corresponding to the display image to be displayed according to the display scene.

[0080] Depending on the display scenario, for example, fingerprint recognition, high dynamic range image display, etc., the number of displayed pixel units may also be different. Specifically, the previous frame may be in full-screen display mode, and the current frame may be in fingerprint recognition mode. The ratio of the number of pixel units corresponding to the current frame display to the number of pixel units corresponding to the previous frame display is 1% to 20%. The ratio of the number of pixel units corresponding to the current frame display to the number of pixel units corresponding to the previous frame display is different, and the brightness of the current frame display is different from that of the previous frame display. The brightness corresponding to the previous frame display is 1000 nits to 1500 nits; the brightness corresponding to the current frame display is 1500 nits to 2000 nits. The specific correspondence is shown in the following table.

[0081] In a second aspect, an embodiment of the present disclosure provides a brightness adjustment method. FIG7 is a flow chart of a brightness adjustment method provided by an embodiment of the present disclosure. As shown in FIG7 , the brightness adjustment method includes steps S701 to S704.

[0082] S701 , controlling each pixel unit of the display panel to display according to the last frame of display picture.

[0083] S702 , enabling a resistance voltage drop compensation function according to the distance between each pixel unit and the driver chip to adjust the brightness of each pixel unit.

[0084] S703 , when the ratio of the number of pixel units corresponding to the current frame display picture to the number of pixel units corresponding to the previous frame display picture is less than or equal to a threshold, control some pixel units of the display panel to display according to the current frame display picture.

[0085] S704 , turning off the resistance voltage drop compensation function to adjust the brightness of some pixel units.

[0086] In the brightness adjustment method provided by the embodiments of the present disclosure, when the display area is between 20% and 100%, the resistance drop compensation function can be enabled to compensate for each pixel unit in the display panel, thereby ensuring the display effect of the display panel and avoiding the occurrence of uneven display. When the display area is between 1% and 20%, the resistance drop compensation function can be disabled, and the brightness of the display panel can be effectively improved to a certain extent by utilizing the characteristics of the display panel itself, thereby meeting the user's requirements for low OPR and high brightness.

[0087] In some embodiments, FIG8 is a flow chart of another brightness adjustment method provided by an embodiment of the present disclosure. As shown in FIG8 , the above-mentioned S704 turns off the resistance voltage drop compensation function to adjust the brightness of some pixel units, and then also includes steps S705 to S707.

[0088] S705 , establishing a first brightness curve according to the brightness of each pixel unit and the data voltage.

[0089] S706 : Establish a second brightness curve based on the first brightness curve; the curvature of the second brightness curve is greater than the curvature of the first brightness curve.

[0090] S707 , inputting corresponding data voltages to some pixel units based on the second brightness curve.

[0091] In the brightness adjustment method provided by the embodiment of the present disclosure, the display mode of the display panel can be detected. For example, the display panel switches from a full-screen display state to a fingerprint recognition display state. In the fingerprint recognition display state, only the pixel units corresponding to the fingerprint recognition area are displayed. It can be determined that the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is less than or equal to a threshold value, such as 1% to 20%, specifically 1%. At this time, the 1% number of pixel units can be controlled to display, and at the same time, based on the second brightness curve (the curvature of the second brightness curve is greater than the curvature of the first brightness curve), the corresponding data voltage is input to some pixel units, which can effectively improve the brightness of the display panel under low OPR.

[0092] In some embodiments, FIG9 is a flow chart of another brightness adjustment method provided by an embodiment of the present disclosure. As shown in FIG9 , the above S707 inputs corresponding data voltages to some pixel units based on the second brightness curve, and then further includes: steps S708 to S710.

[0093] S708 , establishing a first gamma curve according to the brightness and data voltage of each pixel unit.

[0094] S709 : Establish a second gamma curve based on the first gamma curve; the number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve.

[0095] S710 , inputting corresponding gamma voltages to some pixel units based on a second gamma curve.

[0096] In the brightness adjustment method provided by the embodiment of the present disclosure, the display mode of the display panel can be detected. For example, the display panel switches from a full-screen display state to a fingerprint recognition display state. In the fingerprint recognition display state, only the pixel units corresponding to the fingerprint recognition area are displayed. It can be determined that the ratio of the number of pixel units corresponding to the current frame display image to the number of pixel units corresponding to the previous frame display image is less than or equal to a threshold value, such as 1% to 20%, specifically 1%. At this time, the 1% number of pixel units can be controlled to display, and at the same time, based on the second gamma curve (the number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve), the corresponding gamma voltage is input to some pixel units, which can effectively improve the brightness of the display panel under low OPR.

[0097] In a third aspect, an embodiment of the present disclosure provides an electronic device. FIG10 is a schematic structural diagram of an electronic device provided in some embodiments of the present disclosure. As shown in FIG10 , the electronic device includes: one or more processors 1001; a memory 1002, on which one or more programs are stored. When the one or more programs are executed by one or more processors, the one or more processors implement the brightness adjustment method provided in any of the above embodiments; one or more I / O interfaces 1003, connected between the processor and the memory, and configured to implement information interaction between the processor and the memory.

[0098] Among them, the processor 1001 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 1002 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read-write interface) 1003 is connected between the processor 1001 and the memory 1002, and can realize information interaction between the processor 1001 and the memory 1002, including but not limited to a data bus (Bus), etc.

[0099] In some embodiments, the processor 1001 , the memory 1002 , and the I / O interface 1003 are connected to each other via a bus, and further connected to other components of the computing device.

[0100] In a fourth aspect, this embodiment provides a computer-readable medium having a computer program stored thereon, which implements the brightness adjustment method provided in any of the above embodiments when the program is executed by a processor.

[0101] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As is well known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable, and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those skilled in the art that communication media typically embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0102] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A brightness adjustment device, applied to a display panel, wherein: The brightness adjustment device is used to adjust the brightness of the pixel units of the pixel panel according to the number of pixel units corresponding to the display picture to be displayed; The brightness adjustment device comprises: A first display control unit is configured to control each pixel unit of the display panel to display according to a previous frame of display picture; A first brightness control unit is configured to enable a resistance voltage drop compensation function according to a distance between each pixel unit and the driving chip, so as to adjust the brightness of each pixel unit; A second display control unit is configured to control some pixel units of the display panel to display according to the current frame display picture when the ratio of the number of pixel units corresponding to the current frame display picture to the number of pixel units corresponding to the previous frame display picture is less than or equal to a threshold; The second brightness control unit is configured to turn off the resistance voltage drop compensation function to adjust the brightness of some pixel units.

2. The brightness adjustment device according to claim 1, wherein: The brightness adjustment device also includes: A first brightness curve generating unit is configured to establish a first brightness curve according to the brightness and data voltage of each pixel unit; A second brightness curve generating unit is configured to establish a second brightness curve according to the first brightness curve; the curvature of the second brightness curve is greater than the curvature of the first brightness curve; The third brightness control unit is configured to input corresponding data voltages to part of the pixel units based on the second brightness curve.

3. The brightness adjustment device according to claim 2, wherein: The brightness adjustment device also includes: A first gamma curve generating unit is configured to establish a first gamma curve according to the brightness and data voltage of each pixel unit; A second gamma curve generating unit is configured to generate a second gamma curve according to the first gamma curve. gamma curve; the number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve; The fourth brightness control unit is configured to input corresponding gamma voltages to some pixel units based on the second gamma curve.

4. The brightness adjustment device according to claim 1, wherein: The brightness adjustment device also includes: The display mode detection unit is configured to determine the number of pixel units corresponding to the display picture to be displayed according to the display scene.

5. The brightness adjustment device according to claim 1, wherein: The ratio of the number of pixel units corresponding to the current frame display picture to the number of pixel units corresponding to the previous frame display picture is 1% to 20%.

6. The brightness adjustment device according to claim 1, wherein: The ratio of the number of pixel units corresponding to the current frame display picture to the number of pixel units corresponding to the previous frame display picture is different, and the brightness of the current frame display picture is different from the brightness of the previous frame display picture.

7. The brightness adjustment device according to claim 6, wherein: The brightness corresponding to the previous frame display picture is 1000 nits to 1500 nits; the brightness corresponding to the current frame display picture is 1500 nits to 2000 nits.

8. A brightness adjustment method, applied to a display panel, wherein: The brightness adjustment method comprises: Controlling each pixel unit of the display panel to display according to the last displayed frame; According to the distance between each pixel unit and the driver chip, the resistance voltage drop compensation function is turned on to adjust the brightness of each pixel unit; When the ratio of the number of pixel units corresponding to the current frame display picture to the number of pixel units corresponding to the previous frame display picture is less than or equal to a threshold, controlling some pixel units of the display panel to display according to the current frame display picture; The resistor voltage drop compensation function is turned off to adjust the brightness of some pixel units.

9. The brightness adjustment method according to claim 8, wherein: The resistor voltage drop compensation function is turned off to adjust the brightness of some pixel units, and then the method further includes: Establishing a first brightness curve according to the brightness and data voltage of each pixel unit; According to the first brightness curve, a second brightness curve is established; the curvature of the second brightness curve is greater than the curvature of the first brightness curve; Based on the second brightness curve, corresponding data voltages are input to part of the pixel units.

10. The brightness adjustment method according to claim 9, wherein: After inputting corresponding data voltages to some pixel units based on the second brightness curve, the method further includes: Establishing a first gamma curve according to the brightness and data voltage of each pixel unit; According to the first gamma curve, a second gamma curve is established; the number of binding points of the second gamma curve is greater than the number of binding points of the first gamma curve; Based on the second gamma curve, corresponding gamma voltages are input to some pixel units.

11. An electronic device, wherein: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores one or more computer programs that can be executed by the at least one processor, and the one or more computer programs are executed by the at least one processor to enable the at least one processor to perform the brightness adjustment method as described in any one of claims 8-10.

12. A computer-readable storage medium having a computer program stored thereon, wherein: When the computer program is executed by a processor, the computer program implements the brightness adjustment method according to any one of claims 8 to 10.

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