Display panel and data voltage determination method thereof

Abstract

The embodiment of the present application discloses a display panel and a data voltage determination method thereof. The data voltage corresponding to at least part of the non-set brightness level is determined by interpolation calculation according to the data voltage and the power voltage corresponding to the two adjacent set brightness levels respectively, and the data voltage corresponding to the interpolation end point of the two adjacent set brightness levels is determined. When determining the data voltage corresponding to the interpolation end point, not only the data voltage corresponding to the set brightness level is determined, but also the power voltage of the two adjacent set brightness levels is considered. In the case that the power voltage corresponding to the two adjacent set brightness levels is different, the jump of the power voltage can be at least partially offset by compensating the data voltage, the brightness jump caused by the difference of the power voltage corresponding to the set brightness level is reduced, and the display quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a data voltage determination method thereof. BACKGROUND

[0002] With the development of display technology, users have higher and higher requirements for display quality.

[0003] In the prior art, there are some problems of brightness jump at some brightness levels. SUMMARY

[0004] The present application provides a display panel and a data voltage determination method thereof to improve the brightness jump of the display panel, improve the display quality, and further improve the user experience.

[0005] According to an aspect of the present application, a data voltage determination method of a display panel is provided, comprising:

[0006] obtaining data voltages corresponding to at least two set brightness levels; the power supply voltages corresponding to different set brightness levels are different, and the power supply voltages corresponding to at least part of the set brightness levels are different from the power supply voltages corresponding to the previous non-set brightness level or the next non-set brightness level;

[0007] determining data voltages of interpolation end points corresponding to the two adjacent set brightness levels according to the data voltages and the power supply voltages corresponding to the two adjacent set brightness levels, so as to reduce the brightness jump under different power supply voltages; and performing interpolation calculation according to the data voltages of the interpolation end points corresponding to the two adjacent set brightness levels to determine the data voltages corresponding to at least part of the non-set brightness levels.

[0008] Optionally, the determining of the data voltages of the interpolation end points corresponding to the two adjacent set brightness levels according to the data voltages and the power supply voltages corresponding to the two adjacent set brightness levels, so as to reduce the brightness jump under different power supply voltages, comprises:

[0009] determining the data voltages of the interpolation end points according to the voltage difference of the power supply voltages corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels;

[0010] wherein the data voltages of the interpolation end points are positively correlated with the data voltages corresponding to the set brightness levels, and the data voltages of at least one interpolation end point are related to the voltage difference;

[0011] Optionally, in the case that the power supply voltage corresponding to the set brightness level is different from the power supply voltage corresponding to the previous non-set brightness level, the data voltage of the interpolation end point corresponding to the set brightness level is taken as the data voltage corresponding to the previous non-set brightness level of the set brightness level.

[0012] Optionally, in the case that the power supply voltage corresponding to the next non-set luminance level different from the power supply voltage corresponding to the set luminance level, the data voltage corresponding to the interpolation end point of the set luminance level is taken as the data voltage corresponding to the next non-set luminance level of the set luminance level.

[0013] Optionally, the two adjacent set luminance levels include a first luminance level and a second luminance level, the first luminance level being smaller than the second luminance level; and the data voltage corresponding to the interpolation end point is determined according to the voltage difference of the power supply voltages corresponding to the two adjacent set luminance levels and the data voltages corresponding to the two adjacent set luminance levels, comprising:

[0014] determining the data voltage corresponding to the first interpolation end point according to the voltage difference and the data voltage corresponding to the first luminance level;

[0015] taking the data voltage corresponding to the second luminance level as the data voltage corresponding to the second interpolation end point;

[0016] the power supply voltage corresponding to the next non-set luminance level of the first luminance level being different from the power supply voltage corresponding to the first luminance level, and the power supply voltages corresponding to the non-set luminance levels between the first luminance level and the second luminance level being the same as the power supply voltage corresponding to the second luminance level;

[0017] Optionally, the power supply voltage corresponding to the first luminance level is smaller than the power supply voltage corresponding to the second luminance level; the voltage difference is equal to the power supply voltage corresponding to the first luminance level minus the power supply voltage corresponding to the second luminance level; and the sum of the data voltage corresponding to the first luminance level and the voltage difference is taken as the data voltage corresponding to the first interpolation end point.

[0018] Optionally, the two adjacent set luminance levels include a first luminance level and a second luminance level, the first luminance level being smaller than the second luminance level; and the data voltage corresponding to the interpolation end point is determined according to the voltage difference of the power supply voltages corresponding to the two adjacent set luminance levels and the data voltages corresponding to the two adjacent set luminance levels, comprising:

[0019] determining the data voltage corresponding to the second interpolation end point according to the voltage difference and the data voltage corresponding to the second luminance level;

[0020] taking the data voltage corresponding to the first luminance level as the data voltage corresponding to the first interpolation end point;

[0021] the power supply voltage corresponding to the previous non-set luminance level of the second luminance level being different from the power supply voltage corresponding to the second luminance level, and the power supply voltages corresponding to the non-set luminance levels between the first luminance level and the second luminance level being the same as the power supply voltage corresponding to the first luminance level;

[0022] Optionally, the power voltage corresponding to the first brightness level is less than the power voltage corresponding to the second brightness level; the voltage difference is equal to the power voltage corresponding to the first brightness level minus the power voltage corresponding to the second brightness level; and the data voltage corresponding to the second interpolation endpoint is determined as the difference between the data voltage corresponding to the second brightness level and the voltage difference.

[0023] Optionally, the two adjacent set brightness levels include a first brightness level and a second brightness level, the first brightness level being less than the second brightness level; and the data voltage corresponding to the interpolation endpoint is determined according to the voltage difference of the power voltages corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels, including:

[0024] determining the data voltage corresponding to the first interpolation endpoint according to the voltage difference and the data voltage corresponding to the first brightness level;

[0025] determining the data voltage corresponding to the second interpolation endpoint according to the voltage difference and the data voltage corresponding to the second brightness level;

[0026] Optionally, the data voltage corresponding to the first interpolation endpoint is determined as the sum of the data voltage corresponding to the first brightness level and m times the voltage difference; and the data voltage corresponding to the second interpolation endpoint is determined as the difference between the data voltage corresponding to the second brightness level and n times the voltage difference; wherein m and n are both greater than 0 and less than 1.

[0027] Optionally, the two adjacent set brightness levels include a first brightness level and a second brightness level, the first brightness level being less than the second brightness level; and the data voltage corresponding to the interpolation endpoint is determined according to the voltage difference of the power voltages corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels, including:

[0028] adjusting the data voltage under the non-set brightness level adjacent to the first brightness level according to the voltage difference and the data voltage corresponding to the first brightness level;

[0029] and / or adjusting the data voltage under the non-set brightness level adjacent to the second brightness level according to the voltage difference and the data voltage corresponding to the second brightness level;

[0030] determining the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint respectively according to the first brightness level, the second brightness level and the brightness performance under the non-set brightness level between the first brightness level and the second brightness level;

[0031] Optionally, the data voltage corresponding to the first interpolation endpoint is equal to a data voltage in a plurality of groups of data voltages corresponding to non-configured luminance levels adjacent to the first luminance level, the data voltage satisfying a minimum luminance difference between luminance corresponding to the non-configured luminance levels adjacent to the first luminance level and luminance corresponding to the first luminance level.

[0032] Optionally, the data voltage corresponding to the second interpolation endpoint is equal to a data voltage in a plurality of groups of data voltages corresponding to non-configured luminance levels adjacent to the second luminance level, the data voltage satisfying a minimum luminance difference between luminance corresponding to the non-configured luminance levels adjacent to the second luminance level and luminance corresponding to the second luminance level.

[0033] Optionally, the method further comprises:

[0034] acquiring power voltages corresponding to different luminance level ranges of the display panel;

[0035] determining at least one endpoint luminance level of the luminance level ranges corresponding to different power voltages as a configured luminance level;

[0036] performing gamma debugging under the power voltage corresponding to the configured luminance level to obtain the data voltage corresponding to the configured luminance level.

[0037] Optionally, the data voltage corresponding to the first interpolation endpoint is equal to a data voltage in a plurality of groups of data voltages corresponding to non-configured luminance levels adjacent to the first luminance level, the data voltage satisfying a minimum luminance difference between luminance corresponding to the non-configured luminance levels adjacent to the first luminance level and luminance corresponding to the first luminance level.

[0038] Optionally, the data voltage corresponding to the first interpolation endpoint is equal to a data voltage in a plurality of groups of data voltages corresponding to non-configured luminance levels adjacent to the first luminance level, the data voltage satisfying a minimum luminance difference between luminance corresponding to the non-configured luminance levels adjacent to the first luminance level and luminance corresponding to the first luminance level.

[0039] Optionally, the display panel comprises a plurality of pixel circuits, a plurality of data lines and a power line; the pixel circuits are electrically connected to the data lines and the power line, respectively.

[0040] The pixel circuit comprises a driving module, and the driving module is configured to generate a driving current according to a data voltage on the data line and a power voltage on the power line.

[0041] According to another aspect of the present application, a display panel is provided, wherein the data voltage of the display panel is determined by using the data voltage determination method of any of the embodiments of the present application.

[0042] The display panel and the data voltage determination method thereof provided by the embodiment of the present application determine the data voltage of the interpolation end point corresponding to two adjacent set brightness levels according to the data voltage and the power voltage corresponding to the two adjacent set brightness levels, perform interpolation calculation according to the data voltage of the interpolation end point corresponding to the two adjacent set brightness levels, and determine the data voltage corresponding to at least part of the non-set brightness level. In the technical solution of the embodiment, when the data voltage corresponding to the interpolation end point is determined, not only the data voltage corresponding to the set brightness level is determined, but also the power voltage of the two adjacent set brightness levels is considered, so that in the case that the power voltage corresponding to the two adjacent set brightness levels is different, the jump of the power voltage can be at least partially offset by compensation of the data voltage, and then the brightness jump caused by the difference of the power voltage corresponding to the set brightness level is reduced, the display quality is improved, and then the user experience is improved.

[0043] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0045] Figure 1 is a brightness curve diagram of a display panel under different DBV in the prior art;

[0046] Figure 2 is a flowchart of a data voltage determination method of a display panel provided by the embodiment of the present application;

[0047] Figure 3 is a structural schematic diagram of a display panel provided by the embodiment of the present application;

[0048] Figure 4 is a structural schematic diagram of a pixel circuit in the related art;

[0049] Figure 5 is a flowchart of another data voltage determination method of a display panel provided by the embodiment of the present application;

[0050] Figure 6 is a flowchart of another data voltage determination method of a display panel provided by the embodiment of the present application;

[0051] Figure 7is a flowchart of another data voltage determination method of a display panel provided by an embodiment of the present application;

[0052] Figure 8 is a luminance curve diagram of the display panel under different DBVs when the data voltage is determined by the data voltage determination method of the display panel according to the embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the scope of protection of the present application.

[0054] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to the process, method, product, or device.

[0055] As described in the background, there is a luminance jump problem at some luminance levels. The luminance level is also referred to as a display brightness value (DBV). In some use scenarios, such as a high dynamic range (HDR) scenario, it is required that the display screen can support a higher local luminance, that is, the local peak luminance is required to be high. In this case, the power supply voltages corresponding to high luminance levels and low luminance levels need to be different. Figure 1 is a luminance curve diagram of the display panel under different DBVs in the prior art, wherein, Figure 1 The three-segment luminance curve is exemplarily shown in the figure, wherein the DBV range corresponding to the first-segment luminance curve 11 is 2.8V, wherein the DBV range corresponding to the second-segment luminance curve 12 is 2.9V, and wherein the DBV range corresponding to the third-segment luminance curve 13 is 3.0V. In combination with the figure, Figure 1The inventor finds that the luminance jump is prone to occur near the DBV corresponding to the jump point of the power supply voltage, which affects the display quality and user experience.

[0056] The embodiment of the present application provides a data voltage determination method of a display panel, so that the display panel is driven to display according to the data voltage determined by the data voltage determination method in the subsequent driving process of the display panel, and the luminance jump problem of the display panel is improved. Figure 2 The embodiment of the present application provides a data voltage determination method of a display panel, so that the display panel is driven to display according to the data voltage determined by the data voltage determination method in the subsequent driving process of the display panel, and the luminance jump problem of the display panel is improved. Figure 2 The data voltage determination method of the display panel comprises the following steps.

[0057] S110, acquiring data voltages corresponding to at least two set luminance levels.

[0058] Specifically, the display device such as a mobile phone and a computer usually comprises a luminance adjusting button, and a user adjusts the overall display luminance of the display device through the luminance adjusting button. Each time the luminance adjusting button is pressed, an input luminance level is corresponded. Each luminance level corresponds to a display luminance of a maximum gray scale in the display panel. When the display luminance corresponding to the maximum gray scale in the display panel changes, the display luminance corresponding to other gray scales also changes.

[0059] In this step, the set luminance level can be determined first. The set luminance level can be determined according to the power supply voltage corresponding to different luminance levels of the display panel. In this embodiment, the luminance levels corresponding to different power supply voltages are selected as the set luminance levels. The power supply voltages corresponding to different set luminance levels are different, and the power supply voltages corresponding to at least part of the set luminance levels are different from the power supply voltages corresponding to the previous non-set luminance level or the next non-set luminance level. Specifically, the data voltage corresponding to the set luminance level can be obtained by gamma debugging of the display panel, and the data voltage corresponding to the non-set luminance level can be calculated according to the data voltage corresponding to the set luminance level.

[0060] In a case that the power supply voltage corresponding to the set brightness level is different from the power supply voltage corresponding to the previous non-set brightness level, the set brightness level can be the last brightness level without change of the power supply voltage. Specifically, the next non-set brightness level of the set brightness level is the non-set brightness level adjacent to the set brightness level after the set brightness level. For example, the set brightness level includes a second brightness level DBV2, the register value corresponding to the second brightness level DBV2 is 2000, the register value corresponding to the next non-set brightness level DBV21 of the second brightness level DBV2 is 2001, the power supply voltage corresponding to the second brightness level DBV2 is the third power supply voltage, and the power supply voltage corresponding to the next non-set brightness level DBV21 to the brightness level greater than the next non-set brightness level DBV21 (for example, the brightness level range corresponding to the register value from 2001 to 2500) is the fourth power supply voltage, and the third power supply voltage and the fourth power supply voltage are different.

[0061] In a case that the power supply voltage corresponding to the set brightness level is different from the power supply voltage corresponding to the previous non-set brightness level, the set brightness level can be the last brightness level without change of the power supply voltage. Specifically, the next non-set brightness level of the set brightness level is the non-set brightness level adjacent to the set brightness level after the set brightness level. For example, the set brightness level includes a second brightness level DBV2, the register value corresponding to the second brightness level DBV2 is 2000, the register value corresponding to the next non-set brightness level DBV21 of the second brightness level DBV2 is 2001, the power supply voltage corresponding to the second brightness level DBV2 is the third power supply voltage, and the power supply voltage corresponding to the next non-set brightness level DBV21 to the brightness level greater than the next non-set brightness level DBV21 (for example, the brightness level range corresponding to the register value from 2001 to 2500) is the fourth power supply voltage, and the third power supply voltage and the fourth power supply voltage are different.

[0062] S120, determining the data voltage of the interpolation end point corresponding to the two adjacent set brightness levels according to the data voltage and the power supply voltage corresponding to the two adjacent set brightness levels, so as to reduce the brightness jump under different power supply voltages.

[0063] Specifically, in the prior art, the data voltage corresponding to the brightness level binding point is usually determined as the data voltage of the interpolation end point. This determination method does not consider the influence of different power supply voltages corresponding to different brightness level binding points on display brightness. The brightness level binding point is a plurality of brightness levels selected in the range from the minimum brightness level to the maximum brightness level, and the data voltage corresponding to the brightness level binding point can be obtained by gamma debugging at the brightness level binding point. Figure 3is a structural schematic diagram of a display panel provided by an embodiment of the present application, Figure 4 is a structural schematic diagram of a pixel circuit in the related art, on the basis of the above embodiments, with reference to Figure 3 and Figure 4 Optionally, the display panel comprises a plurality of pixel circuits 20, a plurality of data lines DL and a power supply line VDD; the pixel circuits 20 are electrically connected with the data lines DL and the power supply line VDD respectively; the pixel circuit 20 comprises a driving module, the driving module is used for generating a driving current according to a data voltage on the data line DL and a power supply voltage on the power supply line VDD. The driving module comprises a driving transistor DT, the pixel circuit 20 comprises a data writing transistor T1 connected between the data line DL and a first end of the driving transistor DT, a threshold compensation transistor T2 connected between a second end and a control end of the driving transistor DT, and a first light-emitting control transistor T3, a second light-emitting control transistor T4, a first initialization transistor T5 and a second initialization transistor T6. Among them, the first light-emitting control transistor T3 is connected between the first end of the driving transistor DT and the power supply line VDD, the second light-emitting control transistor T4 is connected between the second end of the driving transistor DT and a first pole of a light-emitting device, and a second pole of the light-emitting device is connected to a fixed potential VSS. The first initialization transistor T5 is used for initializing the control end of the driving transistor DT, and the second initialization transistor T6 is used for initializing the first pole of the light-emitting device.

[0064] Because the brightness of the display panel mainly depends on the driving current generated by the driving transistor in the pixel circuit, the driving current is proportional to (ELVDD-data) 2 Wherein, ELVDD represents the power supply voltage, and data represents the data voltage. In theory, the data voltage data is linearly changed, that is, the data voltage data of the adjacent brightness level binding point is linearly interpolated, and the brightness will change according to the linear change of the data voltage data, and there will be no brightness jump problem. However, due to the existence of the jump setting of the power supply voltage ELVDD, the brightness will not change linearly according to the linear change of the data voltage data, and there will be unstable jump of the brightness.

[0065] And in the above step of the embodiment, when determining the data voltage corresponding to the interpolation end point, not only the data voltage corresponding to the set brightness level is determined, but also the power supply voltages of the adjacent two set brightness levels are considered, so that in the case that the power supply voltages of the adjacent two set brightness levels are different, the compensation of the data voltage corresponding to the interpolation end point according to the power supply voltages of the adjacent two set brightness levels can at least partially offset the jump of the power supply voltage, and further reduce the brightness jump caused by the difference of the power supply voltage corresponding to the set brightness level.

[0066] In some optional embodiments of the present application, the data voltage corresponding to the interpolation end point of the set luminance level can not be the data voltage corresponding to any luminance level in the range from the minimum luminance level to the maximum luminance level, and the data voltage corresponding to the interpolation end point only functions to calculate the data voltage of the non-set luminance level between the adjacent set luminance levels. In some other optional embodiments of the present application, when the power voltage corresponding to the set luminance level is different from the power voltage corresponding to the previous non-set luminance level, the data voltage corresponding to the interpolation end point of the set luminance level can be the data voltage corresponding to the previous non-set luminance level of the set luminance level. Since the data voltage corresponding to the interpolation end point contains the compensation amount obtained according to the power voltage corresponding to the adjacent set luminance level, the luminance corresponding to the previous non-set luminance level of the set luminance level is less different from the luminance corresponding to the set luminance level, and the luminance jump is improved. Optionally, when the power voltage corresponding to the next non-set luminance level of the set luminance level is different, the data voltage corresponding to the interpolation end point of the set luminance level can be the data voltage corresponding to the next non-set luminance level of the set luminance level. Since the data voltage corresponding to the interpolation end point contains the compensation amount obtained according to the power voltage corresponding to the adjacent set luminance level, the luminance corresponding to the next non-set luminance level of the set luminance level is less different from the luminance corresponding to the set luminance level, and the luminance jump is improved.

[0067] S130, interpolating the data voltages corresponding to the interpolation end points of the two adjacent set luminance levels to determine the data voltages corresponding to at least part of the non-set luminance levels.

[0068] Specifically, in this step, the data voltages corresponding to the interpolation end points of the two adjacent set luminance levels can be interpolated to determine the data voltages corresponding to at least part of the non-set luminance levels. When the data voltage corresponding to the interpolation end point of the set luminance level is not the data voltage corresponding to any luminance level in the range from the minimum luminance level to the maximum luminance level, the data voltages corresponding to the non-set luminance levels between the two adjacent set luminance levels can be interpolated according to the data voltages corresponding to the interpolation end points of the two adjacent set luminance levels. When the data voltage corresponding to the interpolation end point of the set luminance level is the data voltage corresponding to the previous non-set luminance level or the next non-set luminance level of the set luminance level, the data voltages corresponding to the non-set luminance levels between the two adjacent set luminance levels can be interpolated according to the data voltages corresponding to the interpolation end points of the two adjacent set luminance levels to determine the data voltages corresponding to the non-set luminance levels between the two adjacent set luminance levels, except for the previous non-set luminance level or the next non-set luminance level of the set luminance level.

[0069] Optionally, the data voltage corresponding to at least part of the non-set luminance level is determined by linear interpolation calculation according to the data voltages of the two adjacent corresponding interpolation end points. In the case that the power supply voltages of the two adjacent set luminance levels are different, the jump of the power supply voltage is at least partially offset by compensation of the data voltage according to the power supply voltages of the two adjacent set luminance levels, so that in the case of linear interpolation calculation of the data voltage corresponding to the non-set luminance level, the luminance of the display panel can change linearly with the linear change of the data voltage, the luminance jump of the display panel near the luminance level where the power supply voltage jumps can also be reduced, the display quality is improved, and the user experience is improved.

[0070] The data voltage determination method of the display panel of the embodiment determines the data voltages of the interpolation end points corresponding to the two adjacent set luminance levels according to the data voltages and the power supply voltages of the two adjacent set luminance levels, and determines the data voltage corresponding to at least part of the non-set luminance level by interpolation calculation according to the data voltages of the two adjacent set luminance levels. In the technical solution of the embodiment, when determining the data voltage corresponding to the interpolation end point, not only the data voltage corresponding to the set luminance level is determined, but also the power supply voltages of the two adjacent set luminance levels are considered, so that in the case that the power supply voltages of the two adjacent set luminance levels are different, the jump of the power supply voltage can be at least partially offset by compensation of the data voltage, and then the luminance jump caused by the difference of the power supply voltages corresponding to the set luminance level is reduced, the display quality is improved, and the user experience is improved.

[0071] In some optional embodiments of the present application, S120 includes: determining the data voltage corresponding to the interpolation end point according to the voltage difference of the power supply voltages corresponding to the two adjacent set luminance levels and the data voltages corresponding to the two adjacent set luminance levels; wherein the data voltage corresponding to the interpolation end point is positively correlated with the data voltage corresponding to the set luminance level, and the data voltage corresponding to at least one interpolation end point is correlated with the voltage difference.

[0072] Specifically, the two adjacent set luminance levels include a first luminance level and a second luminance level, wherein the first luminance level is less than the second luminance level, that is, the display luminance corresponding to the maximum gray scale under the first luminance level is less than the display luminance corresponding to the maximum gray scale under the second luminance level. The first luminance level corresponds to a first interpolation end point, and the data voltage corresponding to the first interpolation end point is positively correlated with the data voltage corresponding to the first luminance level. The second luminance level corresponds to a second interpolation end point, and the data voltage corresponding to the second interpolation end point is positively correlated with the data voltage corresponding to the second luminance level. The data voltage corresponding to the first interpolation end point and / or the second interpolation end point is related to a voltage difference, and the voltage difference is the difference between the power supply voltage corresponding to the first luminance level and the power supply voltage corresponding to the second luminance level. In the embodiment, the data voltage corresponding to the first interpolation end point can be obtained by compensating the data voltage corresponding to the first luminance level according to the voltage difference, and / or the data voltage corresponding to the second interpolation end point can be obtained by compensating the data voltage corresponding to the second luminance level according to the voltage difference. The data voltage corresponding to the first interpolation end point and / or the second interpolation end point has been compensated according to the voltage difference between the power supply voltages corresponding to the first luminance level and the second luminance level, thereby at least partially offsetting the jump of the power supply voltage, and further reducing the luminance jump caused by the difference between the power supply voltages corresponding to the first luminance level and the second luminance level.

[0073] Optionally, the next non-set luminance level of the first luminance level is different from the power supply voltage corresponding to the first luminance level, and the power supply voltages corresponding to the non-set luminance levels between the first luminance level and the second luminance level are the same as the power supply voltage corresponding to the second luminance level. For example, the register value corresponding to the first luminance level DBV1 is 1000, the power supply voltage corresponding to the first luminance level is 2.8V, the register value corresponding to the next non-set luminance level of the first luminance level is 1001, and the power supply voltage corresponding to the next non-set luminance level of the first luminance level is 2.9V. The register value corresponding to the second luminance level DBV2 is 1499, and the power supply voltage corresponding to the second luminance level DBV2 is also 2.9V. The power supply voltages corresponding to the non-set luminance levels (the register values corresponding to the non-set luminance levels are 1001 to 1498) between the first luminance level DBV1 and the second luminance level DBV2 are the same as the power supply voltage corresponding to the second luminance level DBV, that is, 2.9V.

[0074] Figure 5 is a flowchart of another data voltage determination method of a display panel provided by an embodiment of the present application, referring to Figure 5 The data voltage determination method of the display panel includes:

[0075] S210, obtaining data voltages corresponding to at least two set luminance levels.

[0076] S220, determining the data voltage corresponding to the first interpolation end point according to the voltage difference and the data voltage corresponding to the first brightness level.

[0077] In the embodiment, the next non-set brightness level after the first brightness level has a jump in the power supply voltage corresponding to the first brightness level. Therefore, if the driving data of the non-set brightness level between the first brightness level and the second brightness level calculated by linear interpolation according to the data voltage corresponding to the first brightness level and the data voltage corresponding to the second brightness level is used to drive the display panel, a brightness jump will occur from the first brightness level to the next non-set brightness level after the first brightness level. In the step, the data voltage corresponding to the first interpolation end point is obtained by adjusting the data voltage corresponding to the first brightness level according to the voltage difference of the power supply voltages corresponding to the first brightness level and the second brightness level, and the data voltage corresponding to the first interpolation end point contains the compensation amount obtained according to the power supply voltages corresponding to the first brightness level and the second brightness level, so that the brightness of the display panel corresponding to the data voltage of the next non-set brightness level after the first brightness level obtained according to the first interpolation end point can be reduced relative to the brightness jump of the display panel at the first brightness level.

[0078] Optionally, the power supply voltage corresponding to the first brightness level is less than the power supply voltage corresponding to the second brightness level, and the voltage difference is equal to the power supply voltage corresponding to the first brightness level minus the power supply voltage corresponding to the second brightness level. The above S220 comprises: determining the sum of the data voltage corresponding to the first brightness level and the voltage difference as the data voltage corresponding to the first interpolation end point. In this way, the jump in the power supply voltage can be compensated to a greater extent through compensation of the data voltage, so that the brightness jump of the display panel near the display brightness level where the power supply voltage jumps can be further reduced, and the display quality is further improved.

[0079] For example, the first brightness level DBV1 corresponds to the first power supply voltage ELVDD1, the second brightness level DBV2 and the brightness levels between the first brightness level DBV1 and the second brightness level DBV2 correspond to the second power supply voltage ELVDD2, and the voltage difference △ELVDD = ELVDD1-ELVDD2. The driving current at the first brightness level DBV1 is proportional to (ELVDD1-data1) 2 The driving current at the second brightness level DBV2 is proportional to (ELVDD2-data2) 2positive correlation, wherein, data1 is the data voltage corresponding to the first brightness level DBV1, and data2 is the data voltage corresponding to the second brightness level DBV2. In this embodiment, by setting the data voltage corresponding to the first interpolation endpoint to be equal to data1+△ELVDD, the driving current corresponding to the first interpolation endpoint is (ELVDD1-(data1+△ELVDD)) 2 positive correlation, that is, (ELVDD1-(data1+ELVDD1-ELVDD2)) 2 , and finally the driving current corresponding to the first interpolation endpoint is (ELVDD2-data1) 2 positive correlation, in this way, it is equivalent to calculating two interpolation endpoints of the non-set brightness level between the first brightness level and the second brightness level under the same power supply voltage, and therefore the sum of the data voltage corresponding to the first brightness level and the voltage difference is determined as the data voltage corresponding to the first interpolation endpoint. By compensating the data voltage with the voltage difference, the power supply voltage jump of the first brightness level and the second brightness level is compensated, and the brightness jump problem is improved.

[0080] S230, determining the data voltage corresponding to the second brightness level as the data voltage corresponding to the second interpolation endpoint.

[0081] Specifically, because the power supply voltage corresponding to the second brightness level is the same as the power supply voltage corresponding to the range of brightness levels before the second brightness level, therefore, in the absence of brightness jump in the second brightness level, the data voltage corresponding to the second brightness level is determined as the data voltage corresponding to the second interpolation endpoint, which can ensure that after interpolation calculation according to the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint, the data voltage under the non-set brightness level will not have brightness jump between the non-set brightness level close to the second brightness level before the second brightness level and the second brightness level.

[0082] For example, for two adjacent set brightness levels, the first brightness level DBV1 and the second brightness level DBV2 correspond to the first interpolation endpoint and the second interpolation endpoint respectively, the data voltage data1' corresponding to the first interpolation endpoint is data1+△ELVDD, and the data voltage data2' corresponding to the second interpolation endpoint is data2, the data voltage dataX' corresponding to the non-set brightness level X is calculated by the linear interpolation formula:

[0083] dataX' = data1'-(data1'-data2')*(DBV1-X) / (DBV1-DBV2)

[0084] = data1 + △ELVDD - (data1 + △ELVDD - data2) * (DBV1 - X) / (DBV1 - DBV2)

[0085] = data1 + △ELVDD - (data1 - data2 + △ELVDD) * (DBV1 - X) / (DBV1 - DBV2).

[0086] Based on the above, in the case that the voltage difference △ELVDD, the first brightness level DBV1, the second brightness level DBV2 and the non-set brightness level X are known, the dataX' corresponding to the non-set brightness level X can be calculated, that is, the influence of the voltage difference △ELVDD formed by the different power supply voltages corresponding to the first brightness level DBV1 and the second brightness level DBV2 can be eliminated. In the display panel, the voltage difference △ELVDD can be preset internally, and a linear interpolation operation can be added to correct the data voltage under the non-set brightness level, so that the brightness jump problem near the set brightness level can be improved.

[0087] S240, interpolating and calculating the data voltage corresponding to the interpolation end points of the adjacent two set brightness levels to determine the data voltage corresponding to at least part of the non-set brightness levels.

[0088] In some optional embodiments of the present application, the power supply voltage corresponding to the non-set brightness level before the second brightness level is different from the power supply voltage corresponding to the second brightness level, and the power supply voltage corresponding to the non-set brightness level between the first brightness level and the second brightness level is the same as the power supply voltage corresponding to the first brightness level. For example, the register value corresponding to the first brightness level DBV1 is 1000, and the power supply voltage corresponding to the first brightness level is 2.8V. The register value corresponding to the second brightness level DBV2 is 1500, and the power supply voltage corresponding to the second brightness level DBV2 is also 2.9V. The register value corresponding to the non-set brightness level before the second brightness level DBV2 is 1499, and the power supply voltage corresponding to the non-set brightness level before the second brightness level DBV2 is 2.8V. The power supply voltage corresponding to the non-set brightness level between the first brightness level DBV1 and the second brightness level DBV2 (the corresponding register value is 1001 to 1499) is the same as the power supply voltage corresponding to the first brightness level, that is, 2.8V.

[0089] Figure 6 is a flowchart of another data voltage determination method of a display panel provided by an embodiment of the present application, referring to Figure 6 The data voltage determination method of the display panel comprises:

[0090] S310, obtaining the data voltage corresponding to at least two set brightness levels.

[0091] S320, determining the data voltage corresponding to the second interpolation end point according to the voltage difference and the data voltage corresponding to the second brightness level.

[0092] In the embodiment, the second brightness level corresponds to a jump of the power supply voltage relative to the power supply voltage corresponding to the previous non-set brightness level of the second brightness level. Therefore, if the driving data of the non-set brightness level between the first brightness level and the second brightness level calculated by linear interpolation according to the data voltage corresponding to the first brightness level and the data voltage corresponding to the second brightness level is used to drive the display panel, a brightness jump will occur from the previous two non-set brightness levels of the second brightness level to the second brightness level. In the step, the data voltage corresponding to the second interpolation end point is obtained by adjusting the data voltage corresponding to the second brightness level according to the voltage difference of the power supply voltage corresponding to the first brightness level and the second brightness level, respectively. The data voltage corresponding to the second interpolation end point contains the compensation amount obtained according to the power supply voltage corresponding to the first brightness level and the second brightness level, respectively, so that the brightness of the display panel corresponding to the data voltage of the previous non-set brightness level of the second brightness level according to the second interpolation end point can be reduced relative to the brightness of the display panel corresponding to the first brightness level.

[0093] Optionally, the power supply voltage corresponding to the first brightness level is less than the power supply voltage corresponding to the second brightness level; and the voltage difference is equal to the power supply voltage corresponding to the first brightness level minus the power supply voltage corresponding to the second brightness level. The above S320 comprises: determining the data voltage corresponding to the second interpolation end point as the difference between the data voltage corresponding to the second brightness level and the voltage difference. In this way, the jump of the power supply voltage can be compensated to a greater extent through compensation of the data voltage, so that the brightness jump of the display panel near the display brightness level where the power supply voltage jumps can be further reduced, and the display quality is further improved.

[0094] For example, the first brightness level DBV1 corresponds to the first power supply voltage ELVDD1, the second brightness level DBV2 and the brightness levels between the first brightness level DBV1 and the second brightness level DBV2 correspond to the second power supply voltage ELVDD2, and the voltage difference △ELVDD=ELVDD1-ELVDD2. The driving current under the first brightness level DBV1 is proportional to (ELVDD1-data1) 2 positively correlated, the driving current under the second brightness level DBV2 is proportional to (ELVDD2-data2) 2positive correlation, wherein, data1 is the data voltage corresponding to the first brightness level DBV1, and data2 is the data voltage corresponding to the first brightness level DBV2. In this embodiment, by setting the data voltage corresponding to the second interpolation endpoint to be equal to data2-△ELVDD, the driving current corresponding to the second interpolation endpoint is (ELVDD2-(data2-(ELVDD1-ELVDD2)) 2 positive correlation, that is, (ELVDD2-(data2-(ELVDD1-ELVDD2))) 2 , and finally the driving current corresponding to the second interpolation endpoint is (ELVDD1-data2) 2 positive correlation. In this way, it is equivalent to calculating two interpolation endpoints of non-set brightness levels between the first brightness level and the second brightness level under the same power supply voltage, and therefore the difference between the data voltage corresponding to the second brightness level and the voltage difference is determined as the data voltage corresponding to the second interpolation endpoint. By compensating the data voltage with the voltage difference, the power supply voltage jump of the first brightness level and the second brightness level is compensated, and the brightness jump problem is improved.

[0095] S330, determining the data voltage corresponding to the first brightness level as the data voltage corresponding to the first interpolation endpoint.

[0096] Specifically, because the power supply voltage corresponding to the second brightness level is the same as the power supply voltage corresponding to a range of brightness levels before the second brightness level, therefore, in the absence of brightness jump in the second brightness level, the data voltage corresponding to the second brightness level is determined as the data voltage corresponding to the second interpolation endpoint, which can ensure that after interpolation calculation according to the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint, the data voltage under the non-set brightness level, between the non-set brightness level adjacent to the second brightness level before the second brightness level and the second brightness level, will not have brightness jump.

[0097] For example, for two adjacent set brightness levels, the first brightness level DBV1 and the second brightness level DBV2, corresponding to the first interpolation endpoint and the second interpolation endpoint respectively, the data voltage data1' corresponding to the first interpolation endpoint is data1, and the data voltage data2' corresponding to the second interpolation endpoint is data2-△ELVDD. The data voltage dataX' corresponding to the non-set brightness level X is calculated by the linear interpolation formula:

[0098] dataX' = data1'-(data1'-data2')*(DBV1-X) / (DBV1-DBV2)

[0099] = data1-(data1-data2+△ELVDD)*(DBV1-X) / (DBV1-DBV2)

[0100] data1-(data1-data2+△ELVDD)*(DBV1-X) / (DBV1-DBV2);

[0101] Based on the above, in the case where the voltage difference △ELVDD, the first brightness level DBV1, the second brightness level DBV2 and the non-set brightness level X are known, the dataX' corresponding to the non-set brightness level X can be calculated, that is, the influence of the voltage difference △ELVDD formed by the different power supply voltages corresponding to the first brightness level DBV1 and the second brightness level DBV2 can be eliminated. In the display panel, the voltage difference △ELVDD can be preset internally, and a linear interpolation operation can be added to correct the data voltage under the non-set brightness level, so that the brightness jump problem near the set brightness level can be improved.

[0102] S340, interpolating the data voltages of the interpolation end points corresponding to the two adjacent set brightness levels respectively to determine the data voltage corresponding to at least part of the non-set brightness level.

[0103] As described above, the two adjacent set brightness levels include the first brightness level and the second brightness level, and the first brightness level is less than the second brightness level. Figure 7 is a flowchart of another data voltage determination method of a display panel provided by an embodiment of the present application, referring to Figure 7 The data voltage determination method of the display panel comprises:

[0104] S410, obtaining the data voltages corresponding to at least two set brightness levels.

[0105] S420, determining the data voltage corresponding to the first interpolation end point according to the voltage difference and the data voltage corresponding to the first brightness level.

[0106] The voltage difference is the voltage difference of the power supply voltages corresponding to the two adjacent set brightness levels, specifically the voltage difference of the power supply voltages corresponding to the first brightness level and the second brightness level. In this step, when the data voltage corresponding to the first interpolation end point is determined according to the voltage difference and the data voltage corresponding to the first brightness level, the sum of the data voltage corresponding to the first brightness level and m times the voltage difference is determined as the data voltage corresponding to the first interpolation end point, m is greater than 0 and less than 1, that is, the jump of the power supply voltage is partially offset by the compensation of the data voltage, which can also improve the brightness jump caused by the different power supply voltages.

[0107] S430, determining the data voltage corresponding to the second interpolation end point according to the voltage difference and the data voltage corresponding to the second brightness level.

[0108] In the step, when the data voltage corresponding to the first interpolation end point is determined according to the voltage difference and the data voltage corresponding to the first brightness level, optionally, the data voltage corresponding to the second brightness level is determined as the data voltage corresponding to the second interpolation end point by subtracting the difference between the n times voltage difference and the data voltage corresponding to the second brightness level, where n is greater than 0 and less than 1, that is, the jump of the power supply voltage is partially offset by compensating the data voltage, and the brightness jump caused by the different power supply voltages can also be improved to a certain extent.

[0109] S440, the data voltage corresponding to the first interpolation end point is determined according to the voltage difference and the data voltage corresponding to the first brightness level, and the data voltage corresponding to the second brightness level is determined as the data voltage corresponding to the second interpolation end point by subtracting the difference between the n times voltage difference and the data voltage corresponding to the second brightness level, where n is greater than 0 and less than 1, that is, the jump of the power supply voltage is partially offset by compensating the data voltage, and the brightness jump caused by the different power supply voltages can also be improved to a certain extent.

[0110] In the embodiment, the jump of the power supply voltage is partially offset by compensating the data voltage corresponding to the first interpolation end point and the second interpolation end point, and the brightness jump caused by the different power supply voltages is improved.

[0111] In some optional embodiments of the present application, the data voltage under the non-set brightness level adjacent to the first brightness level is adjusted according to the voltage difference and the data voltage corresponding to the first brightness level, and / or the data voltage under the non-set brightness level adjacent to the second brightness level is adjusted according to the voltage difference and the data voltage corresponding to the second brightness level. Then, the data voltage corresponding to the first interpolation end point and the second interpolation end point is determined according to the first brightness level, the second brightness level and the brightness performance of the non-set brightness level between the first brightness level and the second brightness level.

[0112] Specifically, in the embodiment, the data voltage corresponding to the first interpolation end point and the second interpolation end point can be determined through the actual debugging process of the display panel, and during the debugging process, the brightness of the display panel after adjusting the data voltage is obtained, and the data voltage corresponding to the first interpolation end point and the second interpolation end point is determined according to the brightness performance, so that the determined data voltage corresponding to the first interpolation end point and the second interpolation end point can be more conducive to improving the brightness jump.

[0113] Optionally, the data voltage corresponding to the first interpolation end point is equal to the data voltage corresponding to the non-set brightness level adjacent to the first brightness level, which is the data voltage that satisfies the minimum brightness difference between the brightness corresponding to the non-set brightness level adjacent to the first brightness level and the brightness corresponding to the first brightness level, so as to improve the brightness jump to a greater extent.

[0114] Optionally, the data voltage corresponding to the second interpolation end point is equal to the data voltage corresponding to the non-set brightness level adjacent to the second brightness level, which is the data voltage that satisfies the minimum brightness difference between the brightness corresponding to the non-set brightness level adjacent to the second brightness level and the brightness corresponding to the second brightness level, so as to improve the brightness jump to a greater extent.

[0115] Optionally, in the above embodiments, the acquiring, in S110, S210, S310 and S410, the data voltage corresponding to at least two set luminance levels comprises: acquiring the power supply voltage corresponding to different luminance level ranges of the display panel; determining at least one end luminance level of the luminance level range corresponding to different power supply voltages as the set luminance level; and performing the gamma debugging under the power supply voltage corresponding to the set luminance level to obtain the data voltage corresponding to the set luminance level.

[0116] Specifically, according to the actual working scene or the working mode requirement of the display panel, the power supply voltage corresponding to different luminance level ranges can be set in advance. In some optional embodiments of the present application, one end luminance level of at least part of the luminance level ranges corresponding to different power supply voltages is determined as the set luminance level, so as to reduce the number of set luminance levels and the number of gamma debugging, save the gamma debugging time and improve the debugging efficiency. In some optional embodiments, the maximum luminance level in the luminance level range is determined as the set luminance level, and the minimum luminance level in the lowest luminance level range can also be the set luminance level. In another optional embodiment, the minimum luminance level in the luminance level range is determined as the set luminance level, and the maximum luminance level in the highest luminance level range can also be the set luminance level.

[0117] By performing the gamma debugging under the power supply voltage corresponding to the set luminance level, the data voltage corresponding to the set luminance level is obtained, so that the set luminance level can reach the corresponding target luminance under the data voltage determined by the debugging. By the compensation of the data voltage under the condition that the power supply voltages corresponding to two adjacent set luminance levels are different, the jump of the power supply voltage can be at least partially offset, so as to reduce the luminance jump caused by the difference of the power supply voltages corresponding to the set luminance levels, and make the luminance close to linear change in the range from the minimum luminance level to the maximum luminance level. Under the premise that the set luminance level can reach the corresponding target luminance under the data voltage determined by the debugging, each non-set luminance level can also reach or approach the corresponding target luminance, so as to ensure the display quality and improve the user experience. Figure 8 is the luminance curve of the display panel under different DBV and under the data voltage determined by the data voltage determination method of the display panel adopting the embodiment of the present application. Figure 8 The three-segment luminance curve is exemplarily shown in the figure, wherein the DBV range corresponding to the first-segment luminance curve 11 is 2.8V, the DBV range corresponding to the second-segment luminance curve 12 is 2.9V, and the DBV range corresponding to the third-segment luminance curve 13 is 3.0V. According to the above description, the power supply voltage corresponding to the first-segment luminance curve 11 is 2.8V, the power supply voltage corresponding to the second-segment luminance curve 12 is 2.9V, and the power supply voltage corresponding to the third-segment luminance curve 13 is 3.0V. Figure 8 It can be known that the luminance jump is improved near the DBV corresponding to the jump point of the power supply voltage.

[0118] The embodiment of the present application further provides a display panel, which adopts the data voltage determination method of the display panel of any of the above-mentioned embodiments of the present application to determine data voltage, and has the beneficial effects of the data voltage determination method of the display panel of any of the above-mentioned embodiments of the present application, which will not be repeated here.

[0119] It should be understood that the steps shown above can be reordered, added to, or deleted from, using various forms of flow. For example, the steps described in the present application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which will not be limited herein.

[0120] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining the data voltage of a display panel, characterized in that, include: Acquire data voltages corresponding to at least two set brightness levels; The power supply voltages corresponding to different brightness levels are different, and at least some of the power supply voltages corresponding to the brightness levels are different from the power supply voltages corresponding to the previous or subsequent non-brightness levels. Based on the data voltage and power supply voltage corresponding to the two adjacent set brightness levels, determine the data voltage of the interpolation endpoints corresponding to the two adjacent set brightness levels; Interpolation calculations are performed based on the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels to determine at least a portion of the data voltages corresponding to the non-set brightness levels; the step of determining the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels based on the data voltages and power supply voltages corresponding to two adjacent set brightness levels, in order to reduce brightness jumps under different power supply voltages, includes: The data voltage corresponding to the interpolation endpoint is determined based on the voltage difference between the power supply voltages corresponding to two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively. The data voltage corresponding to the interpolation endpoint is positively correlated with the data voltage corresponding to the set brightness level, and the data voltage corresponding to at least one interpolation endpoint is correlated with the voltage difference; when the power supply voltage corresponding to the set brightness level is different from the power supply voltage corresponding to the previous non-set brightness level, the data voltage corresponding to the interpolation endpoint of the set brightness level is taken as the data voltage corresponding to the previous non-set brightness level of the set brightness level; or, when the power supply voltage corresponding to the set brightness level is different from the power supply voltage corresponding to the next non-set brightness level, the data voltage corresponding to the interpolation endpoint of the set brightness level is taken as the data voltage corresponding to the next non-set brightness level of the set brightness level.

2. The method for determining the data voltage of a display panel according to claim 1, characterized in that, Two adjacent set brightness levels include a first brightness level and a second brightness level, where the first brightness level is lower than the second brightness level; determining the data voltage corresponding to the interpolation endpoint based on the voltage difference of the power supply voltages corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively includes: The data voltage corresponding to the first interpolation endpoint is determined based on the voltage difference and the data voltage corresponding to the first brightness level. The data voltage corresponding to the second brightness level is determined as the data voltage corresponding to the second interpolation endpoint; The power supply voltage corresponding to the next non-set brightness level of the first brightness level is different from that of the first brightness level, and the power supply voltage corresponding to the non-set brightness level between the first brightness level and the second brightness level is the same as that of the second brightness level.

3. The method for determining the data voltage of a display panel according to claim 2, characterized in that, The power supply voltage corresponding to the first brightness level is less than the power supply voltage corresponding to the second brightness level; the voltage difference is equal to the power supply voltage corresponding to the first brightness level minus the power supply voltage corresponding to the second brightness level. The sum of the data voltage corresponding to the first brightness level and the voltage difference is determined as the data voltage corresponding to the first interpolation endpoint.

4. The method for determining the data voltage of a display panel according to claim 1, characterized in that, Two adjacent set brightness levels include a first brightness level and a second brightness level, where the first brightness level is lower than the second brightness level; determining the data voltage corresponding to the interpolation endpoint based on the voltage difference of the power supply voltages corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively includes: The data voltage corresponding to the second interpolation endpoint is determined based on the voltage difference and the data voltage corresponding to the second brightness level. The data voltage corresponding to the first brightness level is used to determine the data voltage corresponding to the first interpolation endpoint; The power supply voltage corresponding to the previous non-set brightness level of the second brightness level is different from that of the second brightness level, and the power supply voltage corresponding to the non-set brightness level between the first brightness level and the second brightness level is the same as that of the first brightness level.

5. The method for determining the data voltage of a display panel according to claim 4, characterized in that, The power supply voltage corresponding to the first brightness level is less than the power supply voltage corresponding to the second brightness level; the voltage difference is equal to the power supply voltage corresponding to the first brightness level minus the power supply voltage corresponding to the second brightness level. The difference between the data voltage corresponding to the second brightness level and the voltage difference is determined as the data voltage corresponding to the second interpolation endpoint.

6. The method for determining the data voltage of a display panel according to claim 1, characterized in that, The two adjacent set brightness levels include a first brightness level and a second brightness level, wherein the first brightness level is smaller than the second brightness level; determining the data voltage corresponding to the interpolation endpoint based on the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltage corresponding to the two adjacent set brightness levels respectively includes: The data voltage corresponding to the first interpolation endpoint is determined based on the voltage difference and the data voltage corresponding to the first brightness level. The data voltage corresponding to the second interpolation endpoint is determined based on the voltage difference and the data voltage corresponding to the second brightness level.

7. The method for determining the data voltage of a display panel according to claim 6, characterized in that, The sum of the data voltage corresponding to the first brightness level and m times the voltage difference is determined as the data voltage corresponding to the first interpolation endpoint; the difference between the data voltage corresponding to the second brightness level and n times the voltage difference is determined as the data voltage corresponding to the second interpolation endpoint; where m and n are both greater than 0 and less than 1.

8. The method for determining the data voltage of a display panel according to claim 1, characterized in that, Two adjacent set brightness levels include a first brightness level and a second brightness level, where the first brightness level is lower than the second brightness level; determining the data voltage corresponding to the interpolation endpoint based on the voltage difference of the power supply voltages corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively includes: Based on the voltage difference and the data voltage corresponding to the first brightness level, adjust the data voltage at the non-set brightness level adjacent to the first brightness level; And / or, based on the voltage difference and the data voltage corresponding to the second brightness level, adjust the data voltage at the non-set brightness level adjacent to the second brightness level; Based on the brightness performance at the first brightness level, the second brightness level, and the brightness performance at a non-set brightness level between the first brightness level and the second brightness level, the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint are determined respectively.

9. The method for determining the data voltage of a display panel according to claim 8, characterized in that, The data voltage corresponding to the first interpolation endpoint is equal to the data voltage among the multiple sets of data voltages corresponding to the non-set brightness levels adjacent to the first brightness level, which satisfies the minimum brightness difference between the brightness of the non-set brightness level adjacent to the first brightness level and the brightness of the first brightness level.

10. The method for determining the data voltage of a display panel according to claim 8, characterized in that, The data voltage corresponding to the second interpolation endpoint is equal to the data voltage among the multiple sets of data voltages corresponding to the non-set brightness levels adjacent to the second brightness level, which satisfies the minimum brightness difference between the brightness of the non-set brightness levels adjacent to the second brightness level and the brightness of the second brightness level.

11. The method for determining the data voltage of a display panel according to claim 1, characterized in that, The acquisition of data voltages corresponding to at least two set brightness levels includes: Obtain the power supply voltage of the display panel within different brightness levels; The brightness level at at least one endpoint of the brightness level range corresponding to different power supply voltages is determined as the set brightness level; Gamma adjustment is performed at the power supply voltage corresponding to the set brightness level to obtain the data voltage corresponding to the set brightness level.

12. The method for determining the data voltage of a display panel according to claim 1, characterized in that, The step of interpolating and calculating the data voltages corresponding to at least a portion of the non-set brightness levels based on the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels includes: Linear interpolation calculations are performed based on the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels to determine the data voltages corresponding to at least a portion of the non-set brightness levels.

13. The method for determining the data voltage of a display panel according to any one of claims 1-12, characterized in that, The display panel includes multiple pixel circuits, multiple data lines, and power lines; the pixel circuits are electrically connected to the data lines and the power lines respectively. The pixel circuit includes a driving module, which generates a driving current based on the data voltage on the data line and the power supply voltage on the power supply line.

14. A display panel, characterized in that, The data voltage is determined using the data voltage determination method for the display panel according to any one of claims 1-13.

Images