Display control method, device, equipment, and storage medium for display panel

Abstract

A display control method, device, equipment, and storage medium for a display panel, the display control method for a display panel includes: obtaining a reference register value corresponding to a reference gray level of the display panel, and ensuring that display parameters including luminance when the display panel displays the reference gray level based on the reference register value meet target demands (S110); and adjusting the reference register value to obtain a target register value, which is set as a register value corresponding to gray level 0 of the display panel, and ensuring that the luminance when the display panel displays gray level 0 based on the target register value meets demands (S120). The present application can improve the problems of image retention and slide ghosting.

Description

[Technical Field]

[0001] This application claims priority from Chinese Patent Application No. 202211031622.1, entitled "Display control method, device, equipment and storage medium for display panel," filed on August 26, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of displays, and more particularly to a display control method, device, equipment, and storage medium for a display panel. [Background technology]

[0003] With the continuous improvement of display technology, people's requirements for display panel display effects are also increasing. Currently, to improve the display effects of display panels, it is usually necessary to adjust the data voltage and display brightness corresponding to the gray scale of the display panel using a gamma module.

[0004] However, in the related art, problems such as image retention or slide ghosting still exist in the display panel. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application provide a display control method, device, apparatus, and storage medium for a display panel that can improve the problems of image retention and slide ghosting. [Means for solving the problem]

[0006] In a first aspect, an embodiment of the present application provides a display control method for a display panel, including: obtaining a reference register value corresponding to a reference gray level of a display panel, wherein display parameters including brightness when the display panel displays the reference gray level based on the reference register value meet target demands; adjusting the reference register value to obtain a target register value, and setting the target register value as a register value corresponding to 0 gray level of the display panel, wherein brightness when the display panel displays 0 gray level based on the target register value meets demands.

[0007] Based on the same inventive concept, in a second aspect, an embodiment of the present application comprises: a data acquisition module configured to acquire a reference register value corresponding to a reference gray scale of a display panel, in which display parameters including luminance when the display panel displays the reference gray scale based on the reference register value meet target demands; and an adjustment module configured to adjust a reference register value to obtain a target register value, and set the target register value as a register value corresponding to 0 gradation of the display panel, in which the luminance when the display panel displays 0 gradation based on the target register value meets demand.

[0008] Based on the same inventive concept, in a third aspect, an embodiment of the present application provides an electronic device comprising a processor and a memory in which computer program instructions are stored, the electronic device realizing the display control method for a display panel of any one of the embodiments of the first aspect when the processor executes the computer program instructions.

[0009] Based on the same inventive concept, in a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program that, when executed by a processor, realizes the display control method for a display panel of any one of the embodiments of the first aspect. [Effects of the Invention]

[0010] According to the display control method, device, apparatus, and medium for a display panel according to the embodiments of the present application, a high VGMP is not directly selected as the data voltage for gray level 0, but a target register value corresponding to gray level 0 is determined based on a reference register value corresponding to a reference gray level. The register value and the data voltage correspond to each other, that is, the data voltage corresponding to gray level 0 is determined based on the data voltage corresponding to the reference gray level, so that the data voltage corresponding to gray level 0 is determined according to the actual needs of the display panel, and the binding between the data voltage for gray level 0 and VGMP can be avoided, thereby improving the problems of image retention and slide ghosting. [Brief explanation of the drawings]

[0011] Other features, objects and advantages of the present application will become more apparent from a detailed description of the non-limiting embodiments with reference to the following drawings, in which the same or similar reference numerals indicate the same or similar features and the drawings are not drawn to scale.

[0012] [Figure 1] 1 is a schematic diagram showing one flow of a display control method for a display panel according to an embodiment of the present application; [Figure 2] 10A and 10B are schematic diagrams illustrating the correspondence between register values ​​and data voltages in a display control method for a display panel according to an embodiment of the present application; [Figure 3] 5A to 5C are schematic diagrams illustrating other several flow charts of the display control method for the display panel according to the embodiment of the present application. [Figure 4] 5A to 5C are schematic diagrams illustrating other several flow charts of the display control method for the display panel according to the embodiment of the present application. [Figure 5] 5A to 5C are schematic diagrams illustrating other several flow charts of the display control method for the display panel according to the embodiment of the present application. [Figure 6] 5A to 5C are schematic diagrams illustrating other several flow charts of the display control method for the display panel according to the embodiment of the present application. [Figure 7] 5A to 5C are schematic diagrams illustrating other several flow charts of the display control method for the display panel according to the embodiment of the present application. [Figure 8]1 is a structural schematic diagram of a register value determination device for a display panel according to an embodiment of the present application; [Figure 9] 1 shows a structural schematic diagram of an electronic device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0013] The following describes in detail the features and exemplary embodiments of each aspect of the present application. In order to clarify the objectives, technical solutions, and advantages of the present application, the present application will be described in more detail below in conjunction with drawings and specific examples. It should be understood that the specific examples described herein are merely configured to interpret the present application, and are not intended to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application.

[0014] It should be noted that, in this document, relational terms such as "first," "second," etc., are merely used to distinguish one entity or operation from another and do not necessarily require or imply the existence of any such actual relationship or order between those entities or operations. Furthermore, the terms "comprise," "include," or any other variation thereof, are intended to cover non-exclusive inclusions, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed or inherent in such process, method, article, or device. Absent further limitations, elements qualified by the phrase "comprising" do not exclude the presence of additional identical elements in the process, method, article, or device that includes said elements.

[0015] It should be understood that the term "and / or" used herein merely describes the relationship between related objects and indicates that three types of relationships can exist. For example, A and / or B can represent three situations: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the character " / " used herein generally indicates that the related objects before and after it are in an "or" relationship.

[0016] It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover the modifications and variations of the present application that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. In addition, the embodiments of the present application can be combined with each other if they are not inconsistent.

[0017] Before describing the technical solutions according to the embodiments of the present application, the present application will first specifically explain the problems existing in the related art in order to facilitate understanding of the embodiments of the present application.

[0018] A display panel typically comprises a number of light-emitting pixels, each comprising a pixel circuit and a light-emitting element. The pixel circuit typically comprises a TFT (Thin Film Transistor) and a capacitor. The light-emitting element may typically comprise an OLED (Organic Light-Emitting Diode) or other light-emitting device.

[0019] However, the display panel has a problem of image retention or slide ghosting during display.

[0020] The inventors' research has revealed the following: For example, when determining the data voltage corresponding to gray level 0 of a display panel using a P-type driving transistor in a pixel circuit, the highest voltage (VGMP) is typically selected directly. To ensure that different display panels (e.g., from the same production lot) can all meet the target demand, the VGMP value is set high. However, even display panels from the same production lot may have different characteristics. Therefore, for some display panels, selecting a VGMP for gray level 0 results in a data voltage corresponding to gray level 0 that is too high. When a light-emitting pixel in a display panel displays a gray level 0 screen, an excessively high data voltage is applied to the gate electrode of the P-type driving transistor in the pixel circuit, which causes a deviation in the characteristics of the driving transistor, such as a positive shift in threshold voltage. Due to the transistor's hysteresis effect, when switching from gray level 0 to a subsequent screen with a different gray level, the transistor's threshold voltage cannot immediately recover. Therefore, the displayed brightness is affected by the previous screen, resulting in image retention or slide ghosting.

[0021] To solve the above problems, the embodiments of the present application provide a display control method, device, equipment, and storage medium for a display panel, and each embodiment of the display control method, device, equipment, and storage medium for a display panel will be described below in conjunction with the drawings.

[0022] In this application, the display panel may be an organic light emitting diode (OLED) display panel, but may also be other types of display panels.

[0023] First, a display control method for a display panel according to an embodiment of the present invention will be introduced below.

[0024] 1 is a flow diagram of a display control method for a display panel according to an embodiment of the present application. As shown in FIG. 1, the display control method for a display panel according to an embodiment of the present application may include steps S110 to S120.

[0025] In S110, a reference register value corresponding to a reference gray scale of the display panel is obtained, among which, when the display panel displays the reference gray scale based on the reference register value, the display parameters including the luminance meet the target demand.

[0026] In S120, the reference register value is adjusted to obtain a target register value, and the target register value is set as the register value corresponding to the 0 gradation of the display panel, whereby the brightness when the display panel displays the 0 gradation according to the target register value meets the demand.

[0027] The specific implementation of steps S110 to S120 will be described in detail later.

[0028] According to the display control method for a display panel according to an embodiment of the present application, taking a P-type driving transistor as an example, a high VGMP is not directly selected as the data voltage for 0 gray level, but a target register value corresponding to 0 gray level is determined based on a reference register value corresponding to the reference gray level. The register value and the data voltage correspond to each other, that is, the data voltage corresponding to 0 gray level is determined based on the data voltage corresponding to the reference gray level, so that the data voltage corresponding to 0 gray level can be determined according to the actual needs of the display panel, and the binding between the data voltage for 0 gray level and VGMP can be avoided, thereby improving the problems of image retention and slide ghosting.

[0029] In addition, the data voltage corresponding to 0 gradation can be understood as the black state voltage, and there is no need to directly select a high VGMP as the data voltage for 0 gradation. Instead, the data voltage for 0 gradation is determined based on the data voltage corresponding to the reference gradation, so that the data voltage for 0 gradation can be determined according to the actual needs of the display panel. This is equivalent to lowering the black state voltage for 0 gradation, and power consumption can be reduced.

[0030] Below, we will introduce specific methods for implementing each of the above steps.

[0031] First, let me introduce the S110.

[0032] For example, the reference gray scale may be any one of the gray scales in the gray scale range of the display panel other than gray scale 0. For example, the gray scale range of the display panel is from gray scale 0 to 255, and the reference gray scale may be any one of the gray scales from gray scale 1 to 255.

[0033] In this paper, to distinguish between different gradations, the gradation referred to when determining the register value for gradation 0 is called the reference gradation. To distinguish between register values ​​corresponding to different gradations, the register value corresponding to the reference gradation is called the reference register value, and the register value corresponding to gradation 0 is called the target register value.

[0034] The register values ​​can be understood as register values ​​corresponding to a gamma module of the display panel. The gamma module may be configured to generate data voltages, and the generated data voltages can be transmitted to pixel circuits to generate driving currents in the pixel circuits and drive the light-emitting elements to emit light. Different register values ​​can cause the gamma module to generate different data voltages.

[0035] The register value and the data voltage correspond to each other. For example, the correspondence between the register value and the data voltage may be such that the larger the register value, the smaller the corresponding data voltage value, and vice versa.

[0036] The correspondence relationship between the register value and the data voltage may be as shown in Figure 2. When the register value is 0, the corresponding data voltage is VGMP, for example, VGMP may be 7.6V. When the register value is 4096, the corresponding data voltage is the minimum voltage (VGSP), for example, VGSP may be 1.5V. The register value gradually increases from 0 to 4096, while the corresponding data voltage gradually decreases from 7.6V to 1.5V. The numerical values ​​in Figure 2 are for illustrative purposes only and are not intended to limit the present application.

[0037] For example, the target register value corresponding to 0 gradation may be greater than 0, and thus the data voltage corresponding to 0 gradation is smaller than VGMP, and the data voltage corresponding to 0 gradation is avoided from being large, thereby improving the problems of image retention and slide ghosting.

[0038] The display parameters may include at least one of brightness and color coordinates, and correspondingly, the target demands may include at least one of brightness demands and color coordinate demands. For example, the display parameters may include brightness, and the corresponding target demands may include brightness demands. For another example, the display parameters may include color coordinates, and the corresponding target demands may include color coordinate demands. For another example, the display parameters may include brightness and color coordinates, and the corresponding target demands may include brightness demands and color coordinate demands.

[0039] A reference register value corresponding to a reference gray scale can be determined in advance. For example, before a display panel is shipped, a gamma adjustment test can be performed on the display panel to determine a register value corresponding to each of a plurality of gray scales, i.e., a data voltage corresponding to each of a plurality of gray scales, so that the image quality of the display panel meets requirements. A display panel can display a large number of gray scales. For example, if the gray scale range of the display panel is 0 to 255, the display panel can display 256 gray scales. If a gamma adjustment test is performed for each gray scale, the adjustment test will take a long time.

[0040] In some preferred embodiments, as shown in FIG. 3, before S110, the display control method for a display panel according to the embodiments of the present application may further include S111 to S112.

[0041] In S111, a plurality of binding point grayscales are selected from within the grayscale range of the display panel.

[0042] In step S112, a register value corresponding to each binding point gray scale is determined, and the display parameters when the display panel performs binding point gray scale display according to the register value corresponding to the binding point gray scale meet the target demand.

[0043] According to the embodiment of the present invention, the gamma adjustment test can be performed only on the grayscale binding points, thus shortening the time required for the gamma adjustment test.

[0044] Since it is necessary to determine the target register value corresponding to 0 gradation in S120, it can be understood that 0 gradation does not need to be included in the gradation range of the display panel in S111. Still, taking the example of a display panel gradation range of 0 to 255 gradations, multiple gradations can be selected as binding point gradations from 1 to 255 gradations. For example, 1 gradation, 10 gradations, 32 gradations, 64 gradations, 128 gradations, and 255 gradations can be selected as binding point gradations.

[0045] In S112, a register value corresponding to each binding point gradation is determined, that is, a data voltage corresponding to each binding point gradation is determined.

[0046] For example, if the target demand includes a luminance demand, step S112 may include: for any one binding point gray scale, setting an initial register value corresponding to the binding point gray scale; displaying a screen corresponding to the binding point gray scale based on the initial register value to acquire luminance; if the acquired luminance does not match the luminance demand corresponding to the binding point gray scale, adjusting the initial register value based on the adjusted initial register value until the acquired luminance matches the luminance demand corresponding to the binding point gray scale; and setting the adjusted initial register value as the register value corresponding to the binding point gray scale. It can be understood that if the luminance acquired based on the initial register value matches the luminance demand corresponding to the binding point gray scale, the initial register value can be directly set as the register value corresponding to the binding point gray scale.

[0047] As another example, if the target demands include luminance demands and color coordinate demands, step S112 may specifically include the following: for any one binding point grayscale, set an initial register value corresponding to the binding point grayscale; display a screen corresponding to the binding point grayscale based on the initial register value to collect luminance; if the collected luminance does not match the luminance demand corresponding to the binding point grayscale, adjust the initial register value based on the adjusted initial register value until the collected luminance matches the luminance demand corresponding to the binding point grayscale; determine whether the collected color coordinates match the color coordinate demand corresponding to the binding point grayscale based on the adjusted initial register value; if not, continue to adjust the initial register value until the collected color coordinates match the color coordinate demand corresponding to the binding point grayscale, and use the adjusted initial register value as the register value corresponding to the binding point grayscale. It can be understood that if the luminance and color coordinates collected based on the initial register value match the luminance demand and color coordinate demand corresponding to the binding point grayscale, the initial register value can be directly used as the register value corresponding to the binding point grayscale.

[0048] In the above example, it is assumed that the brightness requirement is first determined, and then the color coordinate requirement is determined. However, it is also possible to determine whether the brightness requirement and the color coordinate requirement are met simultaneously, and the present application is not limited thereto.

[0049] For example, a linear difference method may be used to determine a register value corresponding to a gradation other than the binding point gradation. For example, a linear difference method may be used to determine a register value corresponding to a gradation between the binding point gradation 32 and the binding point gradation 64 based on the register values ​​corresponding to the binding point gradation 32 and the binding point gradation 64.

[0050] For example, before step S111, the display control method for a display panel according to an embodiment of the present disclosure may further include setting a minimum voltage VGSP of the display panel and determining the number of bits of a register. The minimum voltage VGSP can be understood as a data voltage corresponding to the brightest state of the display panel. The maximum and minimum values ​​of the register can be determined by the number of bits of the register.

[0051] Exemplarily, after S112, the display control method for a display panel according to an embodiment of the present application may further include storing register values ​​corresponding to each binding point gray level in a storage module corresponding to the display panel. Exemplarily, after S120, the display control method for a display panel according to an embodiment of the present application may further include storing a target register value corresponding to gray level 0 in a storage module corresponding to the display panel. For example, the register values ​​corresponding to each binding point gray level and the target register value corresponding to gray level 0 may be stored in a driver chip corresponding to the display panel.

[0052] The register value corresponding to the binding point gradation is determined by actual adjustment tests, and the register values ​​corresponding to other gradations can be determined based on the linear difference value method, so that the register value corresponding to the binding point gradation has high accuracy, and the reference gradation can be one of the binding point gradations among the multiple binding point gradations, thereby improving the accuracy of the target register value corresponding to 0 gradation.

[0053] For example, the reference gray scale may be the binding point gray scale having the smallest gray scale value among the plurality of binding point gray scales. In this way, the difference between the reference gray scale and the 0 gray scale is small, and by slightly adjusting the register value corresponding to the reference gray scale, the register value corresponding to the 0 gray scale can be quickly determined.

[0054] For example, the reference gray level may be gray level 1. In this way, the difference value between the reference gray level and gray level 0 is minimized, allowing for a smooth transition between the reference gray level and gray level 0.

[0055] The display panel may have a brightness adjustment function, so that the same screen can be displayed at different brightness levels. For example, the display panel may include a level configured to adjust the brightness. Taking a mobile phone as an example, a brightness bar may be provided, and different positions of the brightness bar can be understood as different levels for adjusting the brightness. At least some of the different levels may have different reference register values ​​corresponding to the reference grayscale. Because the target register value corresponding to grayscale 0 is determined based on the reference grayscale, at least some of the different levels may have different target register values ​​corresponding to grayscale 0.

[0056] In the above S112, the register value corresponding to the binding point gradation at any one level can be determined, and in S120, the register value corresponding to the 0 gradation at any one level can be determined.

[0057] Next, let's introduce the S120.

[0058] For example, the driving transistor in the pixel circuit can adopt a P-type transistor, for example, the pixel circuit has a threshold voltage compensation function, and when the driving transistor is turned on, the driving current formula can be the following formula (1): I=K(Vdd-Vdata) 2 (1) Wherein, I represents the driving current, K is a constant, Vdd represents the power supply voltage, and Vdata represents the data voltage, where Vdata and Vdd are both positive numbers, and Vdata is less than or equal to Vdd.

[0059] Brightness is directly correlated with the driving current, i.e., the higher the driving current, the higher the brightness, and the lower the driving current, the lower the brightness. Data voltage is inversely correlated with the driving current, i.e., the higher the data voltage, the lower the driving current, and the lower the data voltage, the higher the driving current. Gray scale is also directly correlated with brightness, i.e., the lower the gray scale, the higher the required data voltage and the lower the brightness. Gray scale is also inversely correlated with the data voltage, so the lower the gray scale, the lower the required data voltage and the higher the brightness.

[0060] As introduced above, the larger the register value, the smaller the corresponding data voltage value, and vice versa.

[0061] It can be understood that the reference gray level may be greater than the 0 gray level, the data voltage corresponding to the reference gray level may be less than the data voltage corresponding to the 0 gray level, and correspondingly, the reference register value may be greater than the target register value corresponding to the 0 gray level.

[0062] In some preferred embodiments, as shown in FIG. 4, adjusting the reference register value to obtain the target register value in S120 may specifically include S121.

[0063] In S121, the reference register value is decreased to obtain the target register value.

[0064] For example, the reference register value corresponding to the reference gray scale is denoted as Ln, and after subtracting the register value X from it, the target register value L0 corresponding to the 0 gray scale is obtained, where L0=Ln-X.

[0065] The register value and the data voltage correspond to each other, and decreasing the reference register value and obtaining the target register value means increasing the data voltage corresponding to the reference register value and obtaining the data voltage corresponding to the target register value.

[0066] For example, the data voltage corresponding to the reference register value is denoted as SLn, and after adding a voltage Y to it, a data voltage SL0 corresponding to the target register value (i.e., a data voltage corresponding to 0 gradation) is obtained, where SL0=SLn+Y.

[0067] For example, the brightness meeting the demand when the display panel displays 0 gradation based on the target register value may include the contrast meeting the contrast demand when the display panel displays 0 gradation based on the target register value.

[0068] It can be understood that the target register value L0 or the data voltage SL0 corresponding to the target register value obtained based on the above value X or Y meets the contrast requirement. Contrast can be understood as the ratio between the brightest white and the darkest black that can be displayed by a display panel. The luminance when the display panel displays 0 grayscale based on the target register value can be understood to meet the dark state requirement. A luminance threshold corresponding to the dark state requirement can be set according to the contrast requirement. If the difference between the luminance when the display panel displays 0 grayscale based on the target register value and the luminance threshold corresponding to the dark state requirement is within a predetermined range, it is considered that the contrast when the display panel displays 0 grayscale based on the target register value meets the contrast requirement.

[0069] For example, S121 may specifically include: setting an initial value; calculating a difference between a reference register value and the initial value to obtain the initial difference value; determining whether the contrast when the display panel displays 0 gradation based on the initial difference value meets the contrast demand; if not, continuously adjusting the initial value until the contrast when the display panel displays 0 gradation based on the adjusted difference value meets the contrast demand; calculating the difference between the reference register value and the adjusted initial value to obtain the adjusted difference value; and setting the adjusted difference value as the target register value.

[0070] It can be understood that if the contrast when the display panel displays 0 gray scale based on the initial difference value meets the contrast demand, the initial difference value can be directly used as the target register value.

[0071] The smaller the data voltage, the less the impact on the transistor characteristics, which is beneficial for improving the problems of image retention and slide ghosting. As long as the target register value can meet the contrast demand, the larger the target register value, i.e., the smaller the data voltage corresponding to 0 gray level, which is the desired result.

[0072] In the above example, one small initial value can be preset, and if the small initial value does not meet the requirement, the initial value can be adjusted to be gradually larger, and in this way, a target register value that meets the contrast requirement and has a large value can be obtained.

[0073] The display panel may include subpixels of multiple colors, which can be mixed to produce white light. The characteristics of the subpixels of different colors are different. For example, each subpixel includes an OLED light-emitting device. The equivalent capacitance of the OLED light-emitting device corresponding to the green subpixel is relatively large, while the equivalent capacitance of the OLED light-emitting device corresponding to the red subpixel and the equivalent capacitance of the OLED light-emitting device corresponding to the blue subpixel are relatively small. The lighting voltage of the green subpixel is higher than the lighting voltage of the red subpixel and the equivalent capacitance of the blue subpixel. Therefore, with the same data voltage, the lighting speed of the green subpixel is slower than the lighting speed of the red subpixel and the blue subpixel.

[0074] When switching gray levels, for example, from gray level 0 to another gray level, the threshold voltage of the transistor cannot recover immediately due to the hysteresis effect of the transistor, and the luminance of the first frame cannot reach the target luminance value, and the lighting speed of the green sub-pixel is relatively slow, which causes ghosting and color cast phenomena in the first frame, such as ghosting, red cast, and pink cast phenomena in the first frame.

[0075] Therefore, by setting the data voltage for gradation 0, it is possible to balance the lighting speed of the subpixels of each color. For example, by increasing the lighting speed of subpixels that are difficult to light and decreasing the lighting speed of subpixels that are easy to light, the color cast phenomenon in the first frame can be improved.

[0076] According to the inventor's research, it has been found that the higher the data voltage corresponding to gradation 0, the easier it is for the sub-pixel to light up, and conversely, the lower the data voltage corresponding to gradation 0, the harder it is for the sub-pixel to light up.

[0077] In some preferred embodiments, as shown in FIG. 5, S121 may specifically include S1211 to S1213.

[0078] In S1211, subpixels of at least two different colors are selected as target subpixels.

[0079] In S1212, the minimum reference register value among the plurality of target subpixels is determined.

[0080] In S1213, the minimum reference register value is decreased to obtain a target register value corresponding to each target sub-pixel.

[0081] In the embodiment of the present application, the minimum value of the reference register values ​​among the plurality of target sub-pixels is selected, that is, the maximum data voltage at the reference gray scale among the plurality of target sub-pixels is selected. In this way, a large data voltage corresponding to gray scale 0 is obtained based on the maximum data voltage value, and the lighting speed of the sub-pixels that are difficult to light up can be increased and the lighting speed of the sub-pixels that are easy to light up can be decreased, thereby improving the color cast phenomenon in the first frame.

[0082] It can be understood that the target register values ​​corresponding to each target sub-pixel are the same numerical value. In S110, the reference register values ​​corresponding to the reference grayscales of each target sub-pixel may be acquired, or the reference register values ​​corresponding to the reference grayscales of each color sub-pixel may be acquired.

[0083] As an example, subpixels of multiple colors in a display panel may all be target subpixels. That is, subpixels of multiple colors may all be compared. For example, if a display panel includes red, green, and blue subpixels, the smallest reference register value may be selected from the reference register values ​​corresponding to the red, green, and blue subpixels in S1212. Then, in S1213, the smallest reference register value may be reduced to set the target register values ​​corresponding to the red, green, and blue subpixels. Here, the target register values ​​corresponding to the red, green, and blue subpixels are the same numerical value.

[0084] The inventors have found that in actual products, users have different requirements for the display effects of sub-pixels of different colors. For example, some sub-pixels of different colors have different lighting speed requirements. In this way, sub-pixels with independent requirements can be designated as non-target sub-pixels other than target sub-pixels. As shown in FIG. 6, the display control method for a display panel according to an embodiment of the present application may further include S1214.

[0085] In S1214, the reference register values ​​corresponding to the non-target sub-pixels are decreased to obtain the target register values ​​corresponding to the non-target sub-pixels.

[0086] For example, the non-target subpixels may include red subpixels, and the target subpixels may include green and blue subpixels. The reference register value corresponding to the red subpixels can be reduced to obtain the target register value corresponding to the red subpixels. The minimum reference register value for the green and blue subpixels can be selected to reduce the minimum reference register value to obtain the target register value corresponding to the green and blue subpixels.

[0087] For example, the non-target subpixels may include green subpixels, and the target subpixels may include red and blue subpixels. The reference register value corresponding to the green subpixel may be reduced to obtain the target register value corresponding to the green subpixel. The minimum reference register value for the red and blue subpixels may be selected, and the minimum reference register value may be reduced to obtain the target register value corresponding to the red and blue subpixels.

[0088] For example, the non-target subpixels may include blue subpixels, and the target subpixels may include red and green subpixels. The reference register value corresponding to the blue subpixel may be reduced to obtain the target register value corresponding to the blue subpixel. The minimum reference register values ​​for the red and green subpixels may be selected and reduced to obtain the target register values ​​corresponding to the red and green subpixels. For example, the correspondence relationship between the grayscale and the register value may include: the smaller the grayscale value, the larger the corresponding register value; and the larger the grayscale value, the smaller the corresponding register value. For example, if an N-type transistor is used as the driving transistor in the pixel circuit, the smaller the grayscale, the smaller the required data voltage and the lower the luminance; and the larger the grayscale, the larger the required data voltage and the higher the luminance. Therefore, taking an N-type driving transistor as an example, the relationship between the grayscale, the register value, and the data voltage may include: the smaller the grayscale value, the larger the corresponding register value and the lower the corresponding data voltage; and the larger the grayscale value, the smaller the corresponding register value and the higher the corresponding data voltage.

[0089] Similarly, if the lowest voltage (VGSP) is directly selected as the data voltage corresponding to 0 gradation of the display panel, in some display panels, if VGSP is still selected for 0 gradation, the data voltage corresponding to 0 gradation will be too low, and when the light-emitting pixel of the display panel displays a 0 gradation screen, a data voltage that is too low will be applied to the gate electrode of the N-type drive transistor of the pixel circuit, which will cause a deviation in the characteristics of the drive transistor, for example, a deviation in the threshold voltage in the negative direction, and similarly cause problems such as image retention or slide ghosting.

[0090] In some preferred embodiments, adjusting the reference register value in S120 to obtain the target register value may specifically include increasing the reference register value corresponding to the reference gradation and obtaining the target register value corresponding to 0 gradation.

[0091] Taking an N-type driving transistor as an example, in this way, it is not necessary to directly select a low VGSP as the data voltage for gray level 0, but rather to increase the reference register value corresponding to the reference gray level to obtain the target register value corresponding to gray level 0. The register value and the data voltage correspond to each other, that is, the data voltage corresponding to gray level 0 is determined based on the data voltage corresponding to the reference gray level, so that the data voltage corresponding to gray level 0 can be determined according to the actual needs of the display panel, and the binding between the data voltage for gray level 0 and the VGSP can be avoided, thereby improving the problems of image retention and slide ghosting.

[0092] It can be seen that the tone value of the reference tone is greater than the 0 tone.

[0093] As mentioned above, the ghosting and color cast problems are caused by the different equivalent capacitances of the OLED light-emitting devices corresponding to the subpixels of each color. According to the inventor's research, it has been found that the ghosting and color cast problems are mainly caused by the different lighting speeds of the subpixels of each color, for example, the lighting speed of the green subpixel is slower than that of the red subpixel, and the luminance of the green subpixel in the first frame is lower, which results in an imbalance in the white light blending ratio, resulting in a red cast when a black screen is switched to a white screen.

[0094] From another perspective, when VGMP is used for the 0 gradation of each color subpixel, the off-time length of each color subpixel is different. According to the inventor's research, it has been found that the data voltages of the reference gradation of each color subpixel are different, and the data voltage of the reference gradation of the red subpixel (e.g., 1 gradation) is significantly higher than the data voltages of the reference gradation of the green subpixel and the blue subpixel. Thus, the leakage current of the red subpixel is larger than the leakage current of the green subpixel and the blue subpixel, resulting in a reddish cast when a black screen is switched to a white screen.

[0095] In some preferred embodiments, for example, the display panel may include a first subpixel and a second subpixel, the first subpixel and the second subpixel being different in color, and the capacitance of the first subpixel being smaller than the capacitance of the second subpixel, where the capacitance may be the equivalent capacitance of an OLED light-emitting device corresponding to the subpixel. As an example, the first subpixel may include a red subpixel, and the second subpixel may include a green subpixel.

[0096] The reference register value corresponding to the reference gradation of the first subpixel is the first reference register value, the target register value corresponding to the 0 gradation of the first subpixel is the first target register value, the reference register value corresponding to the reference gradation of the second subpixel is the second reference register value, and the target register value corresponding to the 0 gradation of the second subpixel is the second target register value.

[0097] The register values ​​and data voltages correspond to each other, and the data voltage corresponding to the first reference register value is the first reference data voltage, the data voltage corresponding to the first target register value is the first target data voltage, the data voltage corresponding to the second reference register value is the second reference data voltage, and the data voltage corresponding to the second target register value is the second target data voltage.

[0098] A first difference value between the first target data voltage and the first reference data voltage is greater than a second difference value between the second target data voltage and the second reference data voltage.

[0099] The first difference value and the second difference value may both be positive numbers. The first reference data voltage and the second reference data voltage may be different. The first target data voltage and the second target data voltage may be different.

[0100] For example, when the first target data voltage is denoted as SL0(R), the first reference data voltage is denoted as SLn(R), and the first difference value is denoted as Y(R), then SL0(R) = SLn(R) + Y(R). When the second target data voltage is denoted as SL0(G), the second reference data voltage is denoted as SLn(G), and the second difference value is denoted as Y(G), then SL0(G) = SLn(G) + Y(G). Among them, Y(R) > Y(G).

[0101] When the first sub-pixel is a red sub-pixel and the second sub-pixel is a green sub-pixel, since Y(R) > Y(G), when the black screen is switched to the white screen in this way, the current of the green sub-pixel is larger than the current of the red sub-pixel. Based on the relational expression Q = I * t, Q(R) < Q(G) is guaranteed. Within the same time, since the amount of charge stored in the green sub-pixel is larger than the amount of charge stored in the red sub-pixel, the lighting speeds of the green sub-pixel and the red sub-pixel can be made to match as much as possible, and the problem of color bleeding can be improved.

[0102] In some preferred embodiments, the display panel may further include a third sub-pixel. The first sub-pixel, the second sub-pixel, and the third sub-pixel all have different colors, and the capacitance of the first sub-pixel is smaller than the capacitance of the third sub-pixel. The capacitance here may be the equivalent capacitance of the OLED light-emitting device corresponding to the sub-pixel. As an example, the first sub-pixel may include a red sub-pixel, the second sub-pixel may include a green sub-pixel, and the third sub-pixel may include a blue sub-pixel.

[0103] The reference register value corresponding to the reference gradation of the third sub-pixel is the third reference register value. The target register value corresponding to the 0 gradation of the third sub-pixel is the third target register value. The data voltage corresponding to the third reference register value is the third reference data voltage. The data voltage corresponding to the third target register value is the third target data voltage. The difference value between the third target data voltage and the third reference data voltage is the third difference value. The first difference value is larger than the third difference value.

[0104] The first difference value, the second difference value, and the third difference value may all be positive numbers. The first reference data voltage, the second reference data voltage, and the third reference data voltage may be different. The first target data voltage, the second target data voltage, and the third target data voltage may be different.

[0105] For example, when still denoting the first target data voltage as SL0(R), the first reference data voltage as SLn(R), and the first difference value as Y(R), then SL0(R) = SLn(R) + Y(R). When denoting the second target data voltage as SL0(G), the second reference data voltage as SLn(G), and the second difference value as Y(G), then SL0(G) = SLn(G) + Y(G). Also, when denoting the third target data voltage as SL0(B), the third reference data voltage as SLn(B), and the third difference value as Y(B), then SL0(B) = SLn(B) + Y(B), where Y(R) > Y(B).

[0106] Similarly, when the first sub-pixel is a red sub-pixel and the third sub-pixel is a blue sub-pixel, since Y(R) > Y(B), when the black screen is switched to the white screen in this way, the current of the blue sub-pixel is larger than the current of the red sub-pixel. Based on the relational expression Q = I * t, Q(R) < Q(B) is guaranteed. Within the same time, since the amount of charge stored in the blue sub-pixel is larger than the amount of charge stored in the red sub-pixel, the lighting speeds of the blue sub-pixel and the red sub-pixel can be made to match as much as possible, and the problem of color bleeding can also be improved.

[0107] Exemplarily, the capacitance of the second sub-pixel may be larger than the capacitance of the third sub-pixel. The third difference value may be larger than the second difference value, that is, Y(B) > Y(G) may also be possible.

[0108] According to the inventor's research, it has been found that when the first difference value is twice the second difference value and the third difference value is 1.2 times the second difference value, a good display effect can be achieved.

[0109] Illustratively, Y(R)=OFFSET*2, Y(G)=OFFSET, and Y(B)=OFFSET*1.2.

[0110] Where, OFFSET is a positive number, and the specific value of OFFSET can be set according to actual needs.

[0111] Taking the second sub-pixel (G sub-pixel) as an example, in the process of determining the specific value of OFFSET, an initial value corresponding to OFFSET is first set, and then a data voltage corresponding to gray level 0 is obtained based on the initial value to determine whether the display effect based on the initial value meets the demand. If so, the initial value can be used as the OFFSET value. If not, the initial value can be adjusted so that the display effect based on the adjusted initial value meets the demand, and the adjusted initial value can be used as the OFFSET value.

[0112] After determining the OFFSET value of the second sub-pixel, the OFFSET value of the second sub-pixel can be multiplied by a corresponding coefficient to obtain the corresponding difference value of the first sub-pixel (R sub-pixel) and the third sub-pixel (B sub-pixel).

[0113] The inventors further found that the second subpixel can be normally turned off when the second difference value is greater than or equal to 0.2 V. In addition, in the related art, taking the reference gray level as an example, if the data voltage of the first subpixel (e.g., the red subpixel) at gray level 1 is already large, e.g., greater than 7.2 V, and the data voltage of the first subpixel at gray level 0 is VGMP (e.g., 7.6 V), the first difference value cannot reach 0.4 V. Therefore, if the second difference value is greater than or equal to 0.2 V and the first difference value is to be guaranteed to be twice the second difference value, the first difference value must be increased. For example, if the data voltage of the first subpixel at gray level 0 is smaller than VGMP, the data voltage of the first subpixel at the reference gray level (e.g., gray level 1) must be reduced.

[0114] In some preferred embodiments, as shown in FIG. 7, S110 may include S1101 to S1102.

[0115] In step S1101, the color coordinates corresponding to the reference grayscale are adjusted to increase the luminance proportion of the first sub-pixel and decrease the luminance proportion of the second sub-pixel.

[0116] In step S1102, the reference register values ​​corresponding to the reference grayscales of the first and second sub-pixels are determined, and the color coordinates when the display panel displays the reference grayscales based on the reference register values ​​meet the color coordinate requirements.

[0117] For example, the reference gray scale may be gray scale 1, and the color coordinate demand corresponding to the higher gray scales may be adjusted according to a white point (0.299 / 0.315). To lower the data voltage corresponding to the reference gray scale of the first subpixel, the luminance proportion of the reference gray scale of the first subpixel may be increased, thereby lowering the luminance proportion of the reference gray scale of the second subpixel. For example, assuming the reference gray scale is still gray scale 1, the color coordinate demand may be adjusted according to (0.299 / 0.315), thereby lowering the data voltage corresponding to the reference gray scale of the first subpixel and increasing the data voltage corresponding to the reference gray scale of the second subpixel. Since the data voltage corresponding to the reference gray scale of the first subpixel is lowered, the first difference value may be increased. If the second difference value is guaranteed to be greater than or equal to 0.2V, the first difference value may reach 0.4V, thereby ensuring that the lighting speeds of the first and second subpixels are as consistent as possible.

[0118] In the above example, the first sub-pixel includes a red sub-pixel and the second sub-pixel includes a green sub-pixel.

[0119] In addition, the display control method for a display panel according to an embodiment of the present application may be executed by a register value determination device for a display panel, or a control module configured to execute the display control method for a display panel in the register value determination device for a display panel. Taking the register value determination device for a display panel according to an embodiment of the present application as an example of executing the display control method for a display panel, the register value determination device for a display panel according to an embodiment of the present application will be described.

[0120] Based on the same inventive concept, an embodiment of the present application further provides a register value determination device for a display panel. As shown in FIG. 8 , an embodiment of the present application further provides a register value determination device 800 for a display panel, which may include a data acquisition module 801 and an adjustment module 802.

[0121] The data acquisition module 801 acquires a reference register value corresponding to the reference gray scale of the display panel, among which, the display parameters including the brightness when the display panel displays the reference gray scale based on the reference register value are configured to meet the target demand.

[0122] The adjustment module 802 adjusts the reference register value to obtain a target register value, and sets the target register value as a register value corresponding to 0 gradation of the display panel, whereby the brightness when the display panel displays 0 gradation according to the target register value is configured to meet demand.

[0123] According to the display panel register value determination device of the embodiment of the present application, a high VGMP is not directly selected as the data voltage for gray level 0, but a target register value corresponding to gray level 0 is determined based on a reference register value corresponding to the reference gray level. The register value and the data voltage correspond to each other, that is, the data voltage corresponding to gray level 0 is determined based on the data voltage corresponding to the reference gray level, so that the data voltage corresponding to gray level 0 is determined according to the actual needs of the display panel, and the binding between the data voltage for gray level 0 and VGMP can be avoided, thereby improving the problems of image retention and slide ghosting.

[0124] In some preferred embodiments, the adjustment module 802 specifically: configured to decrease the reference register value to obtain the target register value; Preferably, the target register value is greater than 0; Preferably, the display panel includes a plurality of levels configured to adjust brightness, and at least some of the different levels have different reference register values ​​corresponding to the reference grayscales.

[0125] In some preferred embodiments, the display panel includes sub-pixels of multiple colors, and the adjustment module 802 specifically: selecting subpixels of at least two different colors as target subpixels; determining a minimum reference register value for a plurality of target sub-pixels; The minimum reference register value is reduced to obtain a target register value corresponding to each target sub-pixel.

[0126] In some preferred embodiments, sub-pixels of multiple colors in the display panel are all target sub-pixels.

[0127] In some preferred embodiments, the sub-pixels of the plurality of colors in the display panel further include non-target sub-pixels other than the target sub-pixels, and the adjustment module 802 further comprises: The reference register values ​​corresponding to the non-target sub-pixels are decreased to obtain the target register values ​​corresponding to the non-target sub-pixels.

[0128] In some preferred embodiments, the display panel comprises a first sub-pixel and a second sub-pixel, the first sub-pixel and the second sub-pixel being different in color, and the capacitance of the first sub-pixel being smaller than the capacitance of the second sub-pixel; a reference register value corresponding to the reference gradation of the first sub-pixel is a first reference register value, a target register value corresponding to the 0 gradation of the first sub-pixel is a first target register value, a reference register value corresponding to the reference gradation of the second sub-pixel is a second reference register value, and a target register value corresponding to the 0 gradation of the second sub-pixel is a second target register value; a data voltage corresponding to the first reference register value is a first reference data voltage, a data voltage corresponding to the first target register value is a first target data voltage, a data voltage corresponding to the second reference register value is a second reference data voltage, and a data voltage corresponding to the second target register value is a second target data voltage; A first difference value between the first target data voltage and the first reference data voltage is greater than a second difference value between the second target data voltage and the second reference data voltage.

[0129] In some preferred embodiments, the display panel further includes a third sub-pixel, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel are all different in color, and the capacitance of the first sub-pixel is smaller than the capacitance of the third sub-pixel; a reference register value corresponding to the reference grayscale of the third sub-pixel is a third reference register value; a target register value corresponding to the 0 grayscale of the third sub-pixel is a third target register value; a data voltage corresponding to the third reference register value is a third reference data voltage; a data voltage corresponding to the third target register value is a third target data voltage; a difference value between the third target data voltage and the third reference data voltage is a third difference value, and the first difference value is greater than the third difference value.

[0130] In some preferred embodiments, the third difference value is greater than the second difference value.

[0131] In some preferred embodiments, the first difference value is twice the second difference value.

[0132] In some preferred embodiments, the third difference value is 1.2 times the second difference value.

[0133] In some preferred embodiments, the second difference value is greater than or equal to 0.2V.

[0134] In some preferred embodiments, the data acquisition module 801 specifically: By adjusting the color coordinate demand corresponding to the reference gray scale, the luminance proportion of the first sub-pixel is increased and the luminance proportion of the second sub-pixel is decreased; determining a reference register value corresponding to each reference gray scale of the first sub-pixel and the second sub-pixel, and configuring the color coordinates when the display panel performs the reference gray scale display based on the reference register value to meet color coordinate demands; In some preferred embodiments, the first sub-pixel comprises a red sub-pixel and the second sub-pixel comprises a green sub-pixel.

[0135] In some preferred embodiments, the adjustment module 802 further comprises: Select multiple binding point gradations from within the gradation range of the display panel, determining a register value corresponding to each binding point gray scale; and configuring a display parameter when the display panel performs binding point gray scale display according to the register value corresponding to the binding point gray scale to meet a target demand; In some preferred embodiments, one binding point gradation of the plurality of binding point gradations is a reference gradation; In some preferred embodiments, the binding point gradation having the smallest gradation value among the plurality of binding point gradations is the reference gradation; In some preferred embodiments, the reference gray scale comprises one gray scale.

[0136] In some preferred embodiments, the adjustment module 802 specifically: The reference register value is increased to obtain the target register value.

[0137] The display panel register value determination device in the embodiment of the present application may be a device, or may be a component, integrated circuit, or chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. For example, the mobile electronic device may be a mobile phone, a tablet, a laptop, a handheld computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and the non-mobile electronic device may be a server, a network-attached storage (NAS), a personal computer (PC), a television (TV), a self-service terminal, or a self-service machine, but the embodiment of the present application is not specifically limited thereto.

[0138] The display panel register value determination device according to the embodiment of the present application can realize each process in the embodiment of the display panel register value determination method of Figure 1, and to avoid redundancy, the description will not be repeated here.

[0139] FIG. 9 is a schematic diagram showing the hardware structure of an electronic device according to an embodiment of the present application.

[0140] The electronic device may include a processor 901 and a memory 902 in which computer program instructions are stored.

[0141] Specifically, the processor 901 may include a central processing unit (CPU) or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of embodiments of the present invention.

[0142] Memory 902 may include mass memory for data or instructions. By way of example and not limitation, memory 902 may include a hard disk drive (HDD), a floppy disk drive, flash memory, an optical disk, a magneto-optical disk, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more thereof. Where appropriate, memory 902 may include removable or non-removable (or fixed) media. Where appropriate, memory 902 may be internal or external to the disaster recovery device of the integration gateway. In particular embodiments, memory 902 is non-volatile solid-state memory. In particular embodiments, memory 902 includes read-only memory (ROM). Where appropriate, the ROM may be mask-programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically alterable ROM (EAROM), or flash memory, or a combination of two or more thereof. Illustratively, the memory may include non-volatile temporary memory.

[0143] The processor 901 reads and executes the computer program instructions stored in the memory 902 to implement any one of the display panel register value determination methods in the above embodiments.

[0144] In one example, the electronic device may further include a communication interface 903 and a bus 910. As shown in Figure 9, the processor 901, the memory 902, and the communication interface 903 are connected via the bus 910 to complete communication between them.

[0145] The communication interface 903 is mainly configured to realize communication between each module, device, unit and / or equipment in the embodiment of the present invention.

[0146] Bus 910 may include hardware, software, or both, and may couple components of an electronic device together. By way of example, and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable bus, or a combination of two or more thereof. Where appropriate, bus 910 may include one or more buses. Although embodiments of the present invention are illustrated and described with particular buses, the present invention contemplates any suitable bus or interconnect.

[0147] By executing the display panel register value determination method in the embodiment of the present application, the electronic device can realize the display panel register value determination method and display panel register value determination device described in connection with Figures 1 and 8.

[0148] The present embodiment further provides a computer-readable storage medium storing a computer program that, when executed by a processor, can realize the display panel register value determination method of the above embodiment and achieve the same technical effect, and to avoid repetition, will not be described again. The computer-readable storage medium may include, but is not limited to, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, etc.

[0149] The functional blocks illustrated in the structural block diagrams above can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, the hardware may be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in unit, a function card, or the like. When implemented in software, the elements of this application are programs or code segments used to perform the necessary tasks. The programs or code segments may be stored on a machine-readable medium or transmitted via a data signal carried by a carrier over a transmission medium or a communications link. The term "computer-readable medium" may include any medium capable of storing or transmitting information. Examples of computer-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, and radio frequency links. Code segments may be downloadable over a computer network such as the Internet, an intranet, or the like.

[0150] According to an embodiment of the present application, the computer-readable storage medium may be a non-transitory computer-readable storage medium.

[0151] It should be noted that the exemplary embodiments described herein describe some methods or systems based on a sequence of steps or devices, but the present application is not limited to the order of the steps described above, i.e., steps may be performed in the order described in the embodiments, steps may be performed in a different order than in the embodiments, or some steps may be performed simultaneously.

[0152] Aspects of the present application have been described above with reference to flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each block in the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to generate a machine that enables the instructions, executed by the processor of the computer or other programmable data processing apparatus, to implement the functions / operations specified in one or more blocks of the flowcharts and / or block diagrams. Such a processor may be, but is not limited to, a general-purpose processor, a special-purpose processor, an application-specific processor, or a field-programmable logic circuit. It should also be understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by dedicated hardware that performs the specified functions or operations, or by a combination of dedicated hardware and computer instructions.

[0153] According to the above-mentioned embodiments of the present application, these embodiments do not describe all the details, and the application is not limited to only the above-mentioned specific embodiments. Based on the above description, it is apparent that many modifications and variations are possible. The present specification selects and specifically describes these embodiments to better understand the principles and practical applications of the present application and to enable those skilled in the art to easily utilize the present application and make modifications and use based on the present application. The present application is limited only by the claims, their full scope and equivalents.

Claims

1. Obtain a reference register value corresponding to a reference gray scale of a display panel, and display parameters including luminance when the display panel displays the reference gray scale based on the reference register value meet target demands; adjusting the reference register value to obtain a target register value, and setting the target register value as a register value corresponding to 0 gray level of the display panel, so that the brightness of the display panel when displaying 0 gray level according to the target register value meets demand; A display control method for a display panel.

2. adjusting the reference register value to obtain the target register value; decreasing the reference register value to obtain the target register value; The method of claim 1.

3. the target register value is greater than 0; the display panel includes a plurality of levels configured to adjust brightness, and at least some of the different levels have reference register values ​​corresponding to the reference grayscales that are different in value; The method of claim 2.

4. The display panel includes sub-pixels of a plurality of colors, and reducing the reference register value to obtain the target register value includes: selecting subpixels of at least two different colors as target subpixels; determining a minimum of the reference register value for a plurality of the target sub-pixels; reducing the minimum of the reference register values ​​to obtain the target register values ​​corresponding to each of the target sub-pixels. The method of claim 2.

5. all of the sub-pixels of the plurality of colors in the display panel are the target sub-pixels; The method of claim 4.

6. the sub-pixels of the plurality of colors in the display panel further include non-target sub-pixels other than the target sub-pixel; the method further comprising decreasing the reference register value corresponding to the non-target sub-pixel to obtain the target register value corresponding to the non-target sub-pixel. The method of claim 4.

7. the display panel includes a first sub-pixel and a second sub-pixel, the first sub-pixel and the second sub-pixel being different in color, and the capacitance of the first sub-pixel being smaller than the capacitance of the second sub-pixel; the reference register value corresponding to the reference gradation of the first sub-pixel is a first reference register value, the target register value corresponding to the 0 gradation of the first sub-pixel is a first target register value, the reference register value corresponding to the reference gradation of the second sub-pixel is a second reference register value, and the target register value corresponding to the 0 gradation of the second sub-pixel is a second target register value; a data voltage corresponding to the first reference register value is a first reference data voltage, a data voltage corresponding to the first target register value is a first target data voltage, a data voltage corresponding to the second reference register value is a second reference data voltage, and a data voltage corresponding to the second target register value is a second target data voltage; a first difference value between the first target data voltage and the first reference data voltage is greater than a second difference value between the second target data voltage and the second reference data voltage; The method of claim 1.

8. the display panel further includes a third sub-pixel, the first sub-pixel, the second sub-pixel, and the third sub-pixel are all different in color, and the capacitance of the first sub-pixel is smaller than the capacitance of the third sub-pixel; the reference register value corresponding to the reference grayscale of the third sub-pixel is a third reference register value; the target register value corresponding to the 0 grayscale of the third sub-pixel is a third target register value; a data voltage corresponding to the third reference register value is a third reference data voltage; a data voltage corresponding to the third target register value is a third target data voltage; a difference value between the third target data voltage and the third reference data voltage is a third difference value, and the first difference value is greater than the third difference value; The method of claim 7.

9. the third difference value is greater than the second difference value; The method of claim 8.

10. the first difference value is twice the second difference value; the third difference value is 1.2 times the second difference value; The method of claim 8.

11. the second difference value is greater than or equal to 0.2 V; The method of claim 8.

12. Obtaining the reference register value corresponding to the reference grayscale of the display panel includes: adjusting a color coordinate value corresponding to the reference gray scale to increase a luminance ratio of the first sub-pixel including a red sub-pixel and decrease a luminance ratio of the second sub-pixel including a green sub-pixel; determining the reference register values ​​corresponding to the reference gray scales of the first sub-pixel and the second sub-pixel, respectively, and ensuring that color coordinates when the display panel performs reference gray scale display based on the reference register values ​​meet the color coordinate requirements. The method of claim 7.

13. Before obtaining the reference register value corresponding to the reference gray scale of the display panel, selecting a plurality of binding point grayscales from within the grayscale range of the display panel; determining a register value corresponding to each of the binding point gray scales, and the display parameters when the display panel performs binding point gray scale display based on the register value corresponding to the binding point gray scales are in accordance with the target demand; The method of claim 1.

14. One of the binding point gradations is the reference gradation. The method of claim 13.

15. The binding point gradation having the smallest gradation value among the plurality of binding point gradations is the reference gradation. The method of claim 13.

16. The reference gray scale includes one gray scale. The method of claim 13.

17. adjusting the reference register value to obtain the target register value; incrementing the reference register value to obtain the target register value; The method of claim 1.

18. a data acquisition module configured to acquire a reference register value corresponding to a reference gray scale of a display panel, and configure the display parameters including luminance when the display panel displays the reference gray scale based on the reference register value to meet a target demand; an adjustment module configured to adjust the reference register value to obtain a target register value, and set the target register value as a register value corresponding to 0 gradation of the display panel, so that the luminance when the display panel displays 0 gradation based on the target register value meets demand; Display control device for display panel.

19. a processor and a memory in which computer program instructions are stored, and when the processor executes the computer program instructions, the display control method for a display panel according to any one of claims 1 to 17 is realized; electronic equipment.

20. A computer program is stored that, when executed by a processor, realizes the display control method for a display panel according to any one of claims 1 to 17. A computer-readable storage medium.

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