Display panel and data voltage determination method thereof

Abstract

The embodiment of the invention discloses a display panel and a data voltage determination method thereof, and the method comprises the steps: determining the data voltages of interpolation endpoints corresponding to two adjacent set brightness levels according to the data voltages and power voltages corresponding to the two adjacent set brightness levels; according to the method, interpolation calculation is carried out to determine data voltages corresponding to at least part of non-set brightness levels, when the data voltages corresponding to interpolation endpoints are determined, determination is carried out according to the data voltages corresponding to the set brightness levels, and power supply voltages of two adjacent set brightness levels are considered; therefore, when the power supply voltages corresponding to the two adjacent set brightness levels are different, the jump of the power supply voltages can be at least partially counteracted by compensating the data voltage, the brightness jump caused by the difference of the power supply voltages corresponding to the set brightness levels is reduced, and the display quality is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a method for determining data voltage thereof. Background Art

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

[0003] In the prior art, there are some brightness jump problems under certain brightness levels. Summary of the invention

[0004] The present invention provides a display panel and a method for determining data voltage thereof, so as to improve brightness jump of the display panel, enhance display quality, and further enhance user experience.

[0005] According to one aspect of the present invention, a method for determining a data voltage of a display panel is provided, comprising:

[0006] Acquire data voltages corresponding to at least two set brightness levels; different set brightness levels correspond to different power supply voltages, and at least some of the power supply voltages corresponding to 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] According to the data voltage and power supply voltage corresponding to two adjacent set brightness levels, the data voltage of the interpolation endpoints corresponding to two adjacent set brightness levels are determined to reduce the brightness jump under different power supply voltages; interpolation calculation is performed according to the data voltage of the interpolation endpoints corresponding to two adjacent set brightness levels to determine the data voltage corresponding to at least some non-set brightness levels.

[0008] Optionally, determining the data voltages of interpolation endpoints corresponding to two adjacent set brightness levels respectively according to the data voltages and the power supply voltages corresponding to two adjacent set brightness levels respectively, so as to reduce brightness jumps under different power supply voltages, includes:

[0009] Determine the data voltage corresponding to the interpolation endpoint according to 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;

[0010] 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;

[0011] Optionally, 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 of the interpolation endpoint corresponding to the set brightness level is used as the data voltage corresponding to the previous non-set brightness level of the set brightness level;

[0012] Optionally, when the power supply voltage corresponding to the next non-set brightness level corresponding to the set brightness level is different, the data voltage corresponding to the interpolation endpoint of the set brightness level is used as the data voltage corresponding to the next non-set brightness level of the set brightness level.

[0013] Optionally, the two adjacent set brightness levels include a first brightness level and a second brightness level, and the first brightness level is less than the second brightness level; and determining the data voltage corresponding to the interpolation endpoint according to the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively, comprises:

[0014] Determine a data voltage corresponding to a first interpolation endpoint according to the voltage difference and a data voltage corresponding to a first brightness level;

[0015] Determining the data voltage corresponding to the second brightness level as the data voltage corresponding to the second interpolation endpoint;

[0016] The power supply voltage corresponding to the non-set brightness level after the first brightness level is different from that corresponding to 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 corresponding to the second brightness level;

[0017] Optionally, 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; optionally, 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.

[0018] Optionally, the two adjacent set brightness levels include a first brightness level and a second brightness level, and the first brightness level is less than the second brightness level; and determining the data voltage corresponding to the interpolation endpoint according to the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively, comprises:

[0019] Determine the data voltage corresponding to the second interpolation endpoint according to the voltage difference and the data voltage corresponding to the second brightness level;

[0020] Determine the data voltage corresponding to the first interpolation endpoint using the data voltage corresponding to the first brightness level;

[0021] The power supply voltage corresponding to the non-set brightness level before the second brightness level is different from that 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 that corresponding to the first brightness level;

[0022] Optionally, 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; optionally, 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.

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

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

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

[0026] Optionally, 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; 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, and the first brightness level is less than the second brightness level; and determining the data voltage corresponding to the interpolation endpoint according to the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively, comprises:

[0028] According to the voltage difference and the data voltage corresponding to the first brightness level, adjusting the data voltage at a non-set brightness level adjacent to the first brightness level;

[0029] and / or, adjusting the data voltage at a 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] Determine 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 at a 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 among a plurality of groups of data voltages corresponding to non-set brightness levels adjacent to the first brightness level, which 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;

[0032] Optionally, the data voltage corresponding to the second interpolation endpoint is equal to the data voltage among multiple groups of data voltages corresponding to non-set brightness levels adjacent to the second brightness level, which satisfies the situation that the 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 is minimum.

[0033] Optionally, it is characterized in that obtaining data voltages corresponding to at least two set brightness levels includes:

[0034] Obtain the power supply voltage corresponding to the display panel within different brightness level ranges;

[0035] Determining at least one endpoint brightness level of the brightness level range corresponding to different power supply voltages as a set brightness level;

[0036] Gamma debugging is performed under the power supply voltage corresponding to the set brightness level to obtain the data voltage corresponding to the set brightness level.

[0037] Optionally, performing interpolation calculation according to data voltages of interpolation endpoints corresponding to two adjacent set brightness levels to determine data voltages corresponding to at least some non-set brightness levels includes:

[0038] A linear interpolation calculation is performed based on the data voltages of the interpolation endpoints respectively corresponding to two adjacent set brightness levels to determine the data voltages corresponding to at least some non-set brightness levels.

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

[0040] The pixel circuit includes a driving module, and the driving module is used 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 invention, a display panel is provided, characterized in that a data voltage is determined by using the data voltage determination method for a display panel according to any embodiment of the present invention.

[0042] The display panel and data voltage determination method of the embodiment of the present invention determine the data voltage of the interpolation endpoints corresponding to the two adjacent set brightness levels according to the data voltage and power supply voltage corresponding to the two adjacent set brightness levels, and perform interpolation calculation according to the data voltage of the interpolation endpoints corresponding to the two adjacent set brightness levels to determine the data voltage corresponding to at least some non-set brightness levels. The technical solution of this embodiment, when determining the data voltage corresponding to the interpolation endpoint, will not only determine it according to the data voltage corresponding to the set brightness level, but also take the power supply voltage of the two adjacent set brightness levels into consideration, so that when the power supply voltages corresponding to the two adjacent set brightness levels are different, the jump of the power supply voltage can be at least partially offset by compensating the data voltage, thereby reducing the brightness jump caused by the difference in the power supply voltage corresponding to the set brightness level, improving the display quality, and thus improving the user experience.

[0043] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0046] Figure 2 is a flow chart of a method for determining a data voltage of a display panel provided by an embodiment of the present invention;

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

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

[0049] Figure 5 is a flow chart of another method for determining a data voltage of a display panel provided by an embodiment of the present invention;

[0050] Figure 6 is a flow chart of another method for determining a data voltage of a display panel provided by an embodiment of the present invention;

[0051] Figure 7is a flow chart of another method for determining a data voltage of a display panel provided by an embodiment of the present invention;

[0052] Figure 8 It is a brightness curve diagram of a display panel under different DBVs under a data voltage determined by the method for determining a data voltage of a display panel according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] As described in the background technology, there are some existing brightness jump problems under certain brightness levels. Among them, the brightness level is also the display brightness level (Display Brightness Value, DBV). In some usage scenarios, such as the High Dynamic Range (HDR) scenario, the display screen needs to support higher local brightness, that is, the local peak brightness needs to be high. In this case, the power supply voltages corresponding to the high brightness level and the low brightness level are different. Figure 1 is a brightness curve diagram of a display panel under different DBV in the prior art, wherein: Figure 1 exemplarily shows three brightness curves, wherein the DBV range of the first brightness curve 11 corresponds to a power supply voltage of 2.8V, wherein the DBV range of the second brightness curve 12 corresponds to a power supply voltage of 2.9V, wherein the DBV range of the third brightness curve 13 corresponds to a power supply voltage of 3.0V. Figure 1The inventors have discovered that brightness jumps are likely to occur near DBV corresponding to the jump point of the power supply voltage, affecting display quality and user experience.

[0056] An embodiment of the present invention provides a method for determining a data voltage of a display panel, so that in a subsequent driving process of the display panel, the display panel is driven to display according to a data voltage determined by the method, thereby improving the brightness jump problem of the display panel. Figure 2 is a flow chart of a method for determining a data voltage of a display panel provided by an embodiment of the present invention, with reference to Figure 2 , the data voltage determination method of the display panel includes:

[0057] S110, obtaining data voltages corresponding to at least two set brightness levels.

[0058] Specifically, display devices such as mobile phones and computers usually include a brightness adjustment button, through which the user adjusts the overall display brightness of the display device, and each press of the brightness adjustment button corresponds to an input brightness level. Each brightness level may correspond to a display brightness of the maximum grayscale in the display panel, and when the display brightness corresponding to the maximum grayscale in the display panel changes, the display brightness corresponding to other grayscales will also change.

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

[0060] Among them, 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 set brightness level is the first brightness level where the power supply voltage changes. Specifically, the previous non-set brightness level of the set brightness level is the non-set brightness level adjacent to the set brightness level before the set brightness level (that is, smaller than the set brightness level). Exemplarily, the set brightness level includes a first brightness level DBV1, the register value corresponding to the first brightness level DBV1 is 1000, the register value corresponding to the previous non-set brightness level DBV11 of the first brightness level DBV1 is 999, and the power supply voltage corresponding to a brightness level less than the previous non-set brightness level DBV11 to the previous non-set brightness level DBV11 (for example, from the brightness level range corresponding to the register value 500 to 999) is the first power supply voltage, the power supply voltage corresponding to the first brightness level DBV1 is the second power supply voltage, and the first power supply voltage is different from the second power supply voltage.

[0061] In the case where 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 set brightness level may also be the last brightness level at which the power supply voltage has not changed. Specifically, the next non-set brightness level of the set brightness level is a non-set brightness level adjacent to the set brightness level after the set brightness level (i.e., greater than the set brightness level). Exemplarily, 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 a third power supply voltage, and the power supply voltage corresponding to a brightness level from the next non-set brightness level DBV21 to a brightness level greater than the next non-set brightness level DBV21 (e.g., a brightness level range from the corresponding register value 2001 to 2500) is a fourth power supply voltage, and the third power supply voltage is different from the fourth power supply voltage.

[0062] S120 , determining data voltages of interpolation endpoints corresponding to two adjacent set brightness levels according to data voltages and power supply voltages corresponding to two adjacent set brightness levels, so as to reduce brightness jumps 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 endpoint. This method of determining the data voltage does not take into account the impact of different power supply voltages corresponding to different brightness level binding points on the display brightness. The brightness level binding point is a number of brightness levels selected within the range of the minimum brightness level to the maximum brightness level. The data voltage corresponding to the brightness level binding point can be obtained by performing gamma debugging under the brightness level binding point. Figure 3is a schematic structural diagram of a display panel provided by an embodiment of the present invention, Figure 4 is a schematic diagram of a pixel circuit in the related art. Based on the above embodiments, Figure 3 and Figure 4 Optionally, the display panel includes a plurality of pixel circuits 20, a plurality of data lines DL and a power line VDD; the pixel circuits 20 are electrically connected to the data lines DL and the power line VDD respectively; the pixel circuits 20 include a driving module, and the driving module is used to generate a driving current according to the data voltage on the data line DL and the power voltage on the power line VDD. The driving module includes a driving transistor DT, and the pixel circuit 20 includes a data writing transistor T1 connected between the data line DL and the first end of the driving transistor DT, a threshold compensation transistor T2 connected to the second end and the 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 line VDD, the second light-emitting control transistor T4 is connected between the second end of the driving transistor DT and the first pole of the light-emitting device, and the second pole of the light-emitting device is connected to the fixed potential VSS. The first initialization transistor T5 is used to initialize the control end of the driving transistor DT, and the second initialization transistor T6 is used to initialize the first pole of the light-emitting device.

[0064] Because the pixel brightness in 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 , where ELVDD represents the power supply voltage and data represents the data voltage. In theory, the data voltage data changes linearly, that is, the data voltage data of adjacent brightness level binding points is calculated by linear interpolation, and the brightness will change according to the linear change of the data voltage data, and there will be no problem of brightness jump. However, due to 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 brightness jumps.

[0065] In the above steps of the present embodiment, when determining the data voltage corresponding to the interpolation endpoint, it is not only determined based on the data voltage corresponding to the set brightness level, but also the power supply voltages of two adjacent set brightness levels are taken into consideration, so that when the power supply voltages of two adjacent set brightness levels are different, the power supply voltage jump can be at least partially offset by compensating the data voltage corresponding to the interpolation endpoint based on the power supply voltages corresponding to the two adjacent set brightness levels, thereby reducing the brightness jump caused by the difference in power supply voltages corresponding to the set brightness levels.

[0066] In some optional embodiments of the present invention, the data voltage of the interpolation endpoint corresponding to the set brightness level may not be used as the data voltage corresponding to any brightness level within the range from the minimum brightness level to the maximum brightness level, and the determined data voltage corresponding to the interpolation endpoint is only used to calculate the data voltage of the non-set brightness level between the adjacent set brightness levels. In some other optional embodiments of the present invention, 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 can be used as the data voltage corresponding to the previous non-set brightness level of the set brightness level. Because the data voltage corresponding to the interpolation endpoint includes the compensation amount obtained according to the power supply voltage corresponding to the adjacent set brightness level, the brightness corresponding to the previous non-set brightness level of the set brightness level is less different from the brightness corresponding to the set brightness level, thereby improving the brightness jump. Optionally, when the power supply voltage corresponding to the next non-set brightness level corresponding to the set brightness level is different, the data voltage corresponding to the interpolation endpoint of the set brightness level can be used as the data voltage corresponding to the next non-set brightness level of the set brightness level. Because the data voltage corresponding to the interpolation endpoint includes the compensation amount obtained according to the power supply voltage corresponding to the adjacent set brightness level, the brightness corresponding to the next non-set brightness level after the set brightness level is less different from the brightness corresponding to the set brightness level, thereby improving brightness jumps.

[0067] S130 , performing interpolation calculation according to the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels, to determine data voltages corresponding to at least some non-set brightness levels.

[0068] Specifically, in this step, interpolation calculation can be 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 some non-set brightness levels. In the case where the data voltage of the interpolation endpoint corresponding to the set brightness level is not used as the data voltage corresponding to any brightness level within the range from the minimum brightness level to the maximum brightness level, interpolation calculation can be performed based on the data voltages of the interpolation endpoints corresponding to the two adjacent set brightness levels to determine the data voltages corresponding to each non-set brightness level between the two adjacent set brightness levels. In the case where the data voltage of the interpolation endpoint corresponding to the set brightness level is used as the data voltage corresponding to the previous non-set brightness level or the next non-set brightness level of the set brightness level, interpolation calculation can be performed based on the data voltages of the interpolation endpoints corresponding to the two adjacent set brightness levels to determine the data voltages corresponding to each non-set brightness level between the two adjacent set brightness levels, excluding the previous non-set brightness level or the next non-set brightness level of the set brightness level.

[0069] Optionally, linear interpolation calculation is performed based on the data voltages of two adjacent interpolation endpoints that respectively correspond to determine the data voltage corresponding to at least some non-set brightness levels. In the case where the power supply voltages of two adjacent set brightness levels are different, the jump of the power supply voltage is at least partially offset by compensating the data voltage based on the power supply voltages corresponding to the two adjacent set brightness levels, so that when linear interpolation is used to calculate the data voltage corresponding to the non-set brightness level, the brightness of the display panel can change linearly with the linear change of the data voltage, and the brightness jump of the display panel near the brightness level where the power supply voltage jumps can also be reduced, thereby improving the display quality and thus improving the user experience.

[0070] The data voltage determination method of the display panel of this embodiment determines the data voltage of the interpolation endpoints 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, and performs interpolation calculation according to the data voltage of the interpolation endpoints corresponding to the two adjacent set brightness levels to determine the data voltage corresponding to at least some non-set brightness levels. The technical solution of this embodiment, when determining the data voltage corresponding to the interpolation endpoint, will not only determine it according to the data voltage corresponding to the set brightness level, but also take the power supply voltage of the two adjacent set brightness levels into consideration, so that when the power supply voltages corresponding to the two adjacent set brightness levels are different, the jump of the power supply voltage can be at least partially offset by compensating the data voltage, thereby reducing the brightness jump caused by the difference in the power supply voltage corresponding to the set brightness level, improving the display quality, and thus improving the user experience.

[0071] In some optional embodiments of the present invention, the above-mentioned S120 includes: determining the data voltage corresponding to the interpolation endpoint 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; wherein 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 related to the voltage difference.

[0072] Specifically, two adjacent set brightness levels include a first brightness level and a second brightness level, wherein the first brightness level is less than the second brightness level, that is, the display brightness corresponding to the maximum grayscale at the first brightness level is less than the display brightness corresponding to the maximum grayscale at the second brightness level. The first brightness level corresponds to a first interpolation endpoint, and the data voltage corresponding to the first interpolation endpoint is positively correlated with the data voltage corresponding to the first brightness level. The second brightness level corresponds to a second interpolation endpoint, and the data voltage corresponding to the second interpolation endpoint is positively correlated with the data voltage corresponding to the second brightness level. The data voltage corresponding to the first interpolation endpoint and / or the second interpolation endpoint is related to a voltage difference, and the voltage difference is the difference between the power supply voltage corresponding to the first brightness level and the power supply voltage corresponding to the second brightness level. In this embodiment, the data voltage corresponding to the first brightness level can be compensated according to the voltage difference to obtain the data voltage corresponding to the first interpolation endpoint, and / or the data voltage corresponding to the second brightness level can be compensated according to the voltage difference to obtain the data voltage corresponding to the second interpolation endpoint. The data voltage corresponding to the first interpolation endpoint and / or the data voltage corresponding to the second interpolation endpoint has been compensated according to the voltage difference between the power supply voltages corresponding to the first brightness level and the second brightness level, respectively, and thus can at least partially offset the power supply voltage jump, thereby reducing the brightness jump caused by the difference in the power supply voltages corresponding to the first brightness level and the second brightness level.

[0073] Optionally, the power supply voltage corresponding to the next non-set brightness level after 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. Exemplarily, 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 next non-set brightness level after the first brightness level is 1001, and the power supply voltage corresponding to the next non-set brightness level after the first brightness level is 2.9V. The register value corresponding to the second brightness level DBV2 is 1499, and the power supply voltage corresponding to the second brightness level DBV2 is also 2.9V. 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 values ​​are 1001 to 1498) is the same as that of the second brightness level DBV, which is 2.9V.

[0074] Figure 5 is a flow chart of another method for determining a data voltage of a display panel provided by an embodiment of the present invention, 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 brightness levels.

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

[0077] In this embodiment, the next non-set brightness level of the first brightness level jumps relative to the power supply voltage corresponding to the first brightness level. Therefore, if linear interpolation calculation is performed according to the data voltage corresponding to the first brightness level and the data voltage corresponding to the second brightness level according to the prior art, and the display panel is driven by the driving data of the non-set brightness level between the first brightness level and the second brightness level obtained by the linear interpolation calculation, a brightness jump will occur from the first brightness level to the next non-set brightness level of the first brightness level. In this step, based on the data voltage corresponding to the first brightness level, the data voltage corresponding to the first brightness level is adjusted according to the voltage difference between the power supply voltages corresponding to the first brightness level and the second brightness level to obtain the data voltage corresponding to the first interpolation endpoint, and the data voltage corresponding to the first interpolation endpoint includes 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 can be reduced relative to the brightness jump of the display panel at the first brightness level under the data voltage corresponding to the next non-set brightness level of the first brightness level obtained according to the data voltage of the first interpolation endpoint.

[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; 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 includes: 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 endpoint. In this way, the jump of the power supply voltage can be compensated to a greater extent by compensating the data voltage, so that near the display brightness level where the power supply voltage jumps, the brightness jump of the display panel can be further reduced, further improving the display quality.

[0079] Exemplarily, 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 (ELVDD1-data1) 2 Positive correlation, the driving current at the second brightness level DBV2 is (ELVDD2-data2) 2positive correlation, where 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 equal to data1+△ELVDD, the driving current corresponding to the first interpolation endpoint is (ELVDD1-(data1+△ELVDD)) 2 Positively correlated, that is, (ELVDD1-(data1+ELVDD1-ELVDD2)) 2 Finally, the driving current corresponding to the first interpolation endpoint is obtained and (ELVDD2-data1) 2 Positive correlation, thus, is equivalent to unifying the two interpolation endpoints for calculating the non-set brightness level between the first brightness level and the second brightness level under the same power supply voltage. 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, compensation for the power supply voltage jump between the first brightness level and the second brightness level is achieved, thereby improving the brightness jump problem.

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

[0081] Specifically, since 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, there is no brightness jump at the second brightness level. Determining the data voltage corresponding to the second brightness level as the data voltage corresponding to the second interpolation endpoint can ensure that after interpolation calculation based on the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint respectively, there will be no brightness jump between the non-set brightness level before the second brightness level and the second brightness level.

[0082] Exemplarily, for two adjacent set brightness levels, the first brightness level DBV1 and the second brightness level DBV2, the first interpolation endpoint and the second interpolation endpoint correspond respectively, the data voltage data1' corresponding to the first interpolation endpoint is data1+△ELVDD, the data voltage data2' corresponding to the second interpolation endpoint is data2, and the data voltage dataX' corresponding to the non-set brightness level X is given 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, when 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. The data voltage at the non-set brightness level can be corrected, and the brightness jump problem near the set brightness level can be improved.

[0087] S240 , performing interpolation calculation according to the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels, to determine data voltages corresponding to at least some non-set brightness levels.

[0088] In some optional embodiments of the present invention, 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 the power supply voltage corresponding to the first brightness level. Exemplarily, 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 previous non-set brightness level of the second brightness level DBV2 is 1499, and the power supply voltage corresponding to the previous non-set brightness level of the second brightness level DBV2 is 2.8V, and 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 values ​​are 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 flow chart of another method for determining a data voltage of a display panel provided by an embodiment of the present invention, referring to Figure 6 , the data voltage determination method of the display panel includes:

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

[0091] S320 , 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.

[0092] In this embodiment, the second brightness level jumps relative to the power supply voltage corresponding to the previous non-set brightness level of the second brightness level. Therefore, if linear interpolation calculation is performed according to the data voltage corresponding to the first brightness level and the data voltage corresponding to the second brightness level according to the prior art, and the display panel is driven by the driving data of the non-set brightness level between the first brightness level and the second brightness level obtained by the linear interpolation calculation, a brightness jump will occur from the first two non-set brightness levels of the second brightness level to the second brightness level. In this step, based on the data voltage corresponding to the second brightness level, the data voltage corresponding to the second brightness level is adjusted according to the voltage difference of the power supply voltage corresponding to the first brightness level and the second brightness level to obtain the data voltage corresponding to the second interpolation endpoint, and the data voltage corresponding to the second interpolation endpoint includes the compensation amount obtained according to the power supply voltage corresponding to the first brightness level and the second brightness level, so that the brightness jump of the display panel can be reduced relative to the brightness jump of the display panel at the first brightness level under the data voltage corresponding to the previous non-set brightness level of the second brightness level obtained according to the data voltage of the second interpolation endpoint.

[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; 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 includes: determining the difference between the data voltage corresponding to the second brightness level and the voltage difference as the data voltage corresponding to the second interpolation endpoint. In this way, the jump of the power supply voltage can be compensated to a greater extent by compensating the data voltage, so that near the display brightness level where the power supply voltage jumps, the brightness jump of the display panel can be further reduced, further improving the display quality.

[0094] Exemplarily, 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 (ELVDD1-data1) 2 Positive correlation, the driving current at the second brightness level DBV2 is (ELVDD2-data2) 2positive correlation, where 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 equal to data2-△ELVDD, the driving current corresponding to the second interpolation endpoint is (ELVDD2-(data2-△ELVDD)) 2 Positively correlated, that is, with (ELVDD2-(data2-(ELVDD1-ELVDD2))) 2 Finally, the driving current corresponding to the second interpolation endpoint is obtained (ELVDD1-data2) 2 Positive correlation, thus, is equivalent to unifying the two interpolation endpoints for calculating the non-set brightness level between the first brightness level and the second brightness level under the same power supply voltage. 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, compensation for the power supply voltage jump between the first brightness level and the second brightness level is achieved, thereby improving the brightness jump problem.

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

[0096] Specifically, since 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, there is no brightness jump at the second brightness level. Determining the data voltage corresponding to the second brightness level as the data voltage corresponding to the second interpolation endpoint can ensure that after interpolation calculation based on the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint respectively, there will be no brightness jump between the non-set brightness level before the second brightness level and the second brightness level.

[0097] Exemplarily, for two adjacent set brightness levels, the first brightness level DBV1 and the second brightness level DBV2, the first interpolation endpoint and the second interpolation endpoint correspond respectively, the data voltage data1' corresponding to the first interpolation endpoint is data1, the data voltage data2' corresponding to the second interpolation endpoint is data2-△ELVDD, and 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, when 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. The data voltage at the non-set brightness level can be corrected, and the brightness jump problem near the set brightness level can be improved.

[0102] S340 , performing interpolation calculation according to the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels, to determine data voltages corresponding to at least some non-set brightness levels.

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

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

[0105] S420: Determine a data voltage corresponding to a first interpolation endpoint according to the voltage difference and the data voltage corresponding to the first brightness level.

[0106] The voltage difference is the voltage difference between the power supply voltages corresponding to two adjacent set brightness levels, specifically the voltage difference between 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 endpoint is determined according to the voltage difference and the data voltage corresponding to the first brightness level, optionally, 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, where m 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, which can also play a certain role in improving the brightness jump caused by different power supply voltages.

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

[0108] In this step, when 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, optionally, 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 n is greater than 0 and less than 1. That is, the power supply voltage jump is partially offset by compensating for the data voltage, which can also improve the brightness jump caused by different power supply voltages.

[0109] S440 , performing interpolation calculation according to the data voltages of the interpolation endpoints corresponding to two adjacent set brightness levels, to determine data voltages corresponding to at least some non-set brightness levels.

[0110] In this embodiment, the jump of the power supply voltage is partially offset by compensating the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint, thereby improving the brightness jump caused by the difference in power supply voltage.

[0111] In some optional embodiments of the present invention, the data voltage at 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 at 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, according to the brightness performance at the first brightness level, the second brightness level, and the 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.

[0112] Specifically, in this embodiment, the data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint 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 voltages corresponding to the first interpolation endpoint and the second interpolation endpoint are determined according to the brightness performance, so that the determined data voltages corresponding to the first interpolation endpoint and the second interpolation endpoint can be more conducive to improving brightness jumps.

[0113] Optionally, the data voltage corresponding to the first interpolation endpoint is equal to the data voltage among the multiple groups of data voltages corresponding to the non-set brightness levels adjacent to the first brightness level, which satisfies the situation that the brightness difference between the brightness corresponding to the non-set brightness levels adjacent to the first brightness level and the brightness corresponding to the first brightness level is minimum, so as to improve the brightness jump to a greater extent.

[0114] Optionally, the data voltage corresponding to the second interpolation endpoint is equal to the data voltage among the multiple groups of data voltages corresponding to the non-set brightness level adjacent to the second brightness level, which satisfies the situation that the 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 is minimum, so as to improve the brightness jump to a greater extent.

[0115] Optionally, in the above embodiments, data voltages corresponding to at least two set brightness levels are obtained in S110, S210, S310 and S410, including: obtaining the power supply voltage corresponding to the display panel within different brightness level ranges; determining at least one endpoint brightness level of the brightness level range corresponding to different power supply voltages as the set brightness level; performing gamma debugging at the power supply voltage corresponding to the set brightness level to obtain the data voltage corresponding to the set brightness level.

[0116] Specifically, the power supply voltage corresponding to different brightness level ranges can be pre-set according to the actual working scene or working mode requirements of the display panel. In some optional embodiments of the present invention, one of the endpoint brightness levels of at least part of the brightness level range corresponding to different power supply voltages is determined as the set brightness level to reduce the number of set brightness levels, thereby reducing the number of gamma debugging, saving gamma debugging time, and improving debugging efficiency. In some optional embodiments, the maximum brightness level within the brightness level range is determined as the set brightness level, and the minimum brightness level within the minimum brightness level range can also be used as the set brightness level. In other optional embodiments, the minimum brightness level within the brightness level range is determined as the set brightness level, and the maximum brightness level within the maximum brightness level range can also be used as the set brightness level.

[0117] By performing gamma debugging at the power supply voltage corresponding to the set brightness level, the data voltage corresponding to the set brightness level is obtained, which ensures that the set brightness level can reach the corresponding target brightness under the data voltage determined by debugging. When the power supply voltages corresponding to two adjacent set brightness levels are different, the jump of the power supply voltage can be at least partially offset by compensating the data voltage, thereby reducing the brightness jump caused by the difference in the power supply voltage corresponding to the set brightness level, so that within the range of the minimum brightness level to the maximum brightness level, the brightness changes close to linearly. Under the premise that the set brightness level can reach the corresponding target brightness under the data voltage determined by debugging, each non-set brightness level can also reach or approach the corresponding target brightness, thereby ensuring display quality and improving user experience. Figure 8 It is a brightness curve diagram of a display panel under different DBVs under a data voltage determined by the method for determining a data voltage of a display panel according to an embodiment of the present invention. Figure 8 exemplarily shows three brightness curves, wherein the DBV range of the first brightness curve 11 corresponds to a power supply voltage of 2.8V, wherein the DBV range of the second brightness curve 12 corresponds to a power supply voltage of 2.9V, wherein the DBV range of the third brightness curve 13 corresponds to a power supply voltage of 3.0V. Figure 8 It can be seen that the brightness jump is improved near the DBV corresponding to the jump point of the power supply voltage.

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

[0119] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0120] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining a data voltage of a display panel, characterized in that: include: 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 some 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; Determining data voltages of interpolation endpoints corresponding to two adjacent set brightness levels, respectively, according to the data voltages and the power supply voltage corresponding to two adjacent set brightness levels, respectively; An interpolation calculation is performed based on the data voltages of the interpolation endpoints respectively corresponding to two adjacent set brightness levels to determine the data voltages corresponding to at least part of the non-set brightness levels.

2. The method for determining the data voltage of a display panel according to claim 1, wherein: The step of determining the data voltages of interpolation endpoints corresponding to two adjacent set brightness levels respectively according to the data voltages and the power supply voltages corresponding to two adjacent set brightness levels respectively, so as to reduce brightness jumps under different power supply voltages, comprises: Determining the data voltage corresponding to the interpolation endpoint according to the voltage difference between the power supply voltages corresponding to two adjacent set brightness levels and the data voltages corresponding to two adjacent set brightness levels; wherein 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 of the interpolation endpoints is correlated with the voltage difference; Preferably, 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 of the interpolation endpoint corresponding to the set brightness level is used as the data voltage corresponding to the previous non-set brightness level of the set brightness level; Preferably, when the power supply voltage corresponding to the next non-set brightness level corresponding to the set brightness level is different, the data voltage corresponding to the interpolation endpoint of the set brightness level is used as the data voltage corresponding to the next non-set brightness level of the set brightness level.

3. The method for determining the data voltage of a display panel according to claim 2, wherein: The two adjacent set brightness levels include a first brightness level and a second brightness level, and the first brightness level is less than the second brightness level; and determining the data voltage corresponding to the interpolation endpoint according to the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively, comprises: Determine a data voltage corresponding to a first interpolation endpoint according to the voltage difference and the data voltage corresponding to the first brightness level; Determining the data voltage corresponding to the second brightness level as the data voltage corresponding to the second interpolation endpoint; The power supply voltage corresponding to the non-set brightness level after the first brightness level is different from that corresponding to 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 corresponding to the second brightness level; Preferably, 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; and 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 2, wherein: The two adjacent set brightness levels include a first brightness level and a second brightness level, and the first brightness level is less than the second brightness level; and determining the data voltage corresponding to the interpolation endpoint according to the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively, comprises: Determine the data voltage corresponding to the second interpolation endpoint according to the voltage difference and the data voltage corresponding to the second brightness level; Determine a data voltage corresponding to a first interpolation endpoint using the data voltage corresponding to the first brightness level; The power supply voltage corresponding to the non-set brightness level before the second brightness level is different from that 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 that corresponding to the first brightness level; Preferably, 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; and 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.

5. The method for determining the data voltage of a display panel according to claim 2, wherein: The two adjacent set brightness levels include a first brightness level and a second brightness level, and the first brightness level is less than the second brightness level; and determining the data voltage corresponding to the interpolation endpoint according to the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively, comprises: Determine a data voltage corresponding to a first interpolation endpoint according to the voltage difference and the data voltage corresponding to the first brightness level; Determine a data voltage corresponding to a second interpolation endpoint according to the voltage difference and the data voltage corresponding to the second brightness level; Preferably, 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; wherein m and n are both greater than 0 and less than 1.

6. The method for determining the data voltage of a display panel according to claim 2, wherein: The two adjacent set brightness levels include a first brightness level and a second brightness level, and the first brightness level is less than the second brightness level; and determining the data voltage corresponding to the interpolation endpoint according to the voltage difference of the power supply voltage corresponding to the two adjacent set brightness levels and the data voltages corresponding to the two adjacent set brightness levels respectively, comprises: adjusting a data voltage at a 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; and / or, adjusting the data voltage at a 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; Determine data voltages corresponding to a first interpolation endpoint and a second interpolation endpoint respectively according to the first brightness level, the second brightness level, and brightness performance at a non-set brightness level between the first brightness level and the second brightness level; Preferably, the data voltage corresponding to the first interpolation endpoint is equal to the data voltage of the plurality 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 corresponding to the non-set brightness levels adjacent to the first brightness level and the brightness corresponding to the first brightness level; Preferably, the data voltage corresponding to the second interpolation endpoint is equal to the data voltage among the multiple groups of data voltages corresponding to the non-set brightness levels adjacent to the second brightness level, which satisfies the situation that the brightness difference between the brightness corresponding to the non-set brightness levels adjacent to the second brightness level and the brightness corresponding to the second brightness level is minimum.

7. The method for determining the data voltage of a display panel according to claim 1, wherein: The obtaining of data voltages corresponding to at least two set brightness levels includes: Obtaining power supply voltages corresponding to the display panel within different brightness level ranges; Determining at least one endpoint brightness level of the brightness level range corresponding to different power supply voltages 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.

8. The method for determining the data voltage of a display panel according to claim 1, wherein: The interpolation calculation is performed according to the data voltages of the interpolation endpoints respectively corresponding to two adjacent set brightness levels to determine the data voltages corresponding to at least part of the non-set brightness levels, including: A linear interpolation calculation is performed based on the data voltages of the interpolation endpoints respectively corresponding to two adjacent set brightness levels to determine the data voltages corresponding to at least part of the non-set brightness levels.

9. The method for determining the data voltage of a display panel according to any one of claims 1 to 8, characterized in that: The display panel includes 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 lines respectively; The pixel circuit includes a driving module, and the driving module is used to generate a driving current according to a data voltage on the data line and the power voltage on the power line.

10. A display panel, characterized in that: The data voltage is determined by using the data voltage determination method of the display panel described in any one of claims 1 to 9.

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