Gamma voltage debugging method and system of display panel

Abstract

Embodiments of the present application disclose a gamma voltage debugging method and system of a display panel, and belong to the technical field of display. The gamma voltage debugging method comprises the following steps: presetting a plurality of frequency binding points of the display panel, wherein the plurality of frequency binding points comprise a reference frequency binding point; determining a plurality of reference binding point voltages corresponding to the reference frequency binding point; determining a plurality of binding point voltages corresponding to each of the remaining frequency binding points according to the reference frequency binding point and the plurality of reference binding point voltages; the remaining frequency binding points are frequency binding points other than the reference frequency binding point in the plurality of frequency binding points. In this way, a plurality of groups of frequency bands are divided through the plurality of frequency binding points, the binding point voltages are adjusted for different frequency binding points, the gamma voltage of the display panel is further adjusted, and thus the automatic adjustment of the display panel is realized. In addition, the difference in manual adjustment of the gamma voltage can be avoided, further adjustment difference between different display panels is avoided, and the quality of the display panel leaving the factory is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of display, and particularly relates to a gamma voltage debugging method and system of a display panel. BACKGROUND

[0002] The variable refresh rate technology has become a necessary function of gaming TV and e-sports gaming monitor display, which can effectively solve the picture problems such as tearing and delay to meet the high pursuit of game users for picture quality. However, the existing variable refresh rate technology has the problems of picture flicker and picture brightness attenuation.

[0003] At present, the gamma (GAMMA) voltage compensation is usually used to solve the problems of flicker and picture brightness attenuation. The gamma voltage compensation is to adjust the gamma value and voltage and other parameters in the liquid crystal display to realize the consistency of brightness under different frequencies, reduce the picture flicker and brightness attenuation. However, the existing gamma voltage compensation mainly adjusts the binding point voltage manually, which is tedious and time-consuming, and affects the user experience. SUMMARY

[0004] The application provides a gamma voltage debugging method of a display panel, which aims to solve the problem that the existing gamma voltage compensation mainly adjusts the binding point voltage manually, which is tedious and time-consuming, and affects the user experience. Another object of the application is to provide a gamma voltage debugging system of a display panel.

[0005] Technical scheme: The gamma voltage debugging method of a display panel provided by the application is used to debug the variable frequency quality of the display panel, and comprises the following steps:

[0006] A plurality of frequency binding points of the display panel are preset, and the plurality of frequency binding points comprises a reference frequency binding point;

[0007] A plurality of reference binding point voltages corresponding to the reference frequency binding point are determined.

[0008] A plurality of binding point voltages corresponding to each frequency binding point in the remaining frequency binding points are determined according to the reference frequency binding point and the plurality of reference binding point voltages. The remaining frequency binding points are the frequency binding points other than the reference frequency binding point in the plurality of frequency binding points.

[0009] In some embodiments, the reference frequency binding point is the frequency maximum in the plurality of frequency binding points.

[0010] In some embodiments, the step of determining the plurality of reference binding point voltages corresponding to the reference frequency binding point comprises:

[0011] determine a plurality of gray scales corresponding to the reference frequency binding point, the plurality of gray scales including a minimum gray scale, a maximum gray scale, and at least one intermediate gray scale between the maximum gray scale and the minimum gray scale;

[0012] determine a minimum binding point voltage corresponding to the minimum gray scale and a maximum binding point voltage corresponding to the maximum gray scale according to a preset contrast ratio and a preset transmittance of the display panel;

[0013] obtain a preset luminance of each of the intermediate gray scales according to a luminance of the maximum gray scale and a preset gamma value;

[0014] determine an intermediate binding point voltage of each of the intermediate gray scales when the preset luminance and the preset gamma value are satisfied;

[0015] determine the minimum binding point voltage, the maximum binding point voltage, and the intermediate binding point voltage as the reference binding point voltage.

[0016] In some embodiments, the luminance of each of the intermediate gray scales is obtained according to the following formula:

[0017] Lv Gray = Lv Graymax × (Gray / Graymax) gamma ,

[0018] wherein Lv Gray is the luminance of each of the intermediate gray scales, Lv Graymax is the luminance of the maximum gray scale, Gray is each of the intermediate gray scales, Graymax is the maximum gray scale, and gamma is the preset gamma value.

[0019] In some embodiments, the reference binding point voltage is determined by the following steps:

[0020] determine an optimal common electrode voltage of the display panel;

[0021] symmetrically adjust a current binding point voltage of the display panel;

[0022] determine whether a current frequency flicker data is a minimum value of frequency flicker data, if not, asymmetrically adjust the current binding point voltage so that the current frequency flicker data is the minimum value of frequency flicker data, and if yes, asymmetrically adjust the current binding point voltage so that the current frequency flicker data reaches a preset proportion of the minimum value of frequency flicker data;

[0023] determine whether a current gamma value is equal to the preset gamma value, if yes, determine the current binding point voltage as the reference binding point voltage, and if not, return to symmetrically adjust the current binding point voltage of the display panel.

[0024] In some embodiments, the stroboscopic data minimum value is obtained by the following steps:

[0025] obtaining a current stroboscopic data of the display panel;

[0026] modifying the register assignment of the current bind point voltage in a direction of increasing voltage, and obtaining a first updated stroboscopic data;

[0027] determining a first reference value according to the current stroboscopic data and the first updated stroboscopic data, returning to the step of modifying the register assignment of the current bind point voltage in a direction of increasing voltage, and obtaining a first updated stroboscopic data, if the first reference value is less than or equal to zero, and modifying the register assignment in a direction of decreasing voltage, and obtaining a second updated stroboscopic data, if the first reference value is greater than zero;

[0028] determining a second reference value according to the first updated stroboscopic data and the second updated stroboscopic data, returning to the step of modifying the register assignment in a direction of decreasing voltage, and obtaining a second updated stroboscopic data, if the second reference value is less than or equal to zero, and determining the second updated stroboscopic data as the stroboscopic data minimum value, if the second reference value is greater than zero.

[0029] In some embodiments, the first reference value and the second reference value are determined according to the following formulas:

[0030] Δ current1 = Flicker2 - Flicker1,

[0031] Δ current2 = Flicker3 - Flicker2,

[0032] wherein Δ current1 is the first reference value, Flicker1 is the current stroboscopic data, Flicker2 is the first updated stroboscopic data, Δ current2 is the second reference value, and Flicker3 is the second updated stroboscopic data.

[0033] In some embodiments, the step of determining the intermediate bind point voltage of each intermediate gray scale when the preset luminance and the preset gamma value are satisfied comprises:

[0034] modifying the register assignment of the current bind point voltage;

[0035] obtaining a current luminance of the display panel;

[0036] obtaining the current gamma value according to the register assignment and the current luminance;

[0037] determining the current bind point voltage as the intermediate bind point voltage if the current gamma value is equal to the preset gamma value.

[0038] In some embodiments, the step of determining a plurality of bind point voltages corresponding to each of the remaining frequency bind points according to the reference frequency bind point and the plurality of reference bind point voltages comprises:

[0039] obtaining a reference brightness of the reference frequency bind point, the reference brightness comprising a brightness of each of a plurality of gray scales;

[0040] symmetrically adjusting a target bind point voltage of the display panel corresponding to a target frequency bind point, the target frequency bind point being any one of the remaining frequency bind points;

[0041] collecting a target brightness of the target frequency bind point;

[0042] asymmetrically adjusting the target bind point voltage if a difference between the target brightness and the reference brightness is less than a first preset threshold value;

[0043] collecting target stroboscopic data corresponding to the target frequency bind point;

[0044] collecting an updated target brightness of the target frequency bind point if a difference between the target stroboscopic data and the minimum stroboscopic data is less than a second preset threshold value;

[0045] determining a target bind point voltage corresponding to the updated target brightness as the bind point voltage if a difference between the updated target brightness and the reference brightness is less than the first preset threshold value.

[0046] Correspondingly, the embodiment of the present application provides a display panel gamma voltage debugging system for executing the display panel gamma voltage debugging method according to any one of the above embodiments, comprising:

[0047] a display panel;

[0048] a detection device;

[0049] a debugging device, the debugging device being electrically connected with the display panel, and the debugging device being electrically connected with the detection device, the debugging device comprising a register, the register being used for storing all reference bind point voltages and all bind point voltages.

[0050] In some embodiments, the detection device is used for detecting the display panel and obtaining detection data of the display panel.

[0051] The debugging device is configured to output the reference bind point voltage and the bind point voltage to the display panel according to the detection data, so as to debug the variable-frequency image quality of the display panel.

[0052] Beneficial effects: Compared with the prior art, the gamma voltage debugging method of the display panel provided in the embodiments of the present application is used to debug the variable-frequency image quality of the display panel, and includes the following steps: a plurality of frequency bind points of the display panel are preset, and the plurality of frequency bind points include a reference frequency bind point; a plurality of reference bind point voltages corresponding to the reference frequency bind point are determined; and a plurality of bind point voltages corresponding to each frequency bind point in the remaining frequency bind points are determined according to the reference frequency bind point and the plurality of reference bind point voltages. The remaining frequency bind points are frequency bind points other than the reference frequency bind point in the plurality of frequency bind points. In this way, a plurality of frequency bind points are divided into a plurality of groups of frequency bands, the bind point voltages are adjusted for different frequency bind points, the gamma voltage of the display panel is further adjusted, and thus the automatic adjustment of the display panel is realized. In addition, the difference in manual adjustment of the gamma voltage can be avoided, and the debugging difference between different display panels is further avoided, so that the quality of the display panel leaving the factory is ensured.

[0053] Compared with the prior art, the gamma voltage debugging system of the display panel provided in the embodiments of the present application can include all the technical features and beneficial effects of the gamma voltage debugging method of the display panel described above, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0054] 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 as follows. 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 effort on the basis of these drawings.

[0055] Figure 1 The flowchart of reference bind point voltage determination of the gamma voltage debugging method of the display panel provided in the embodiments of the present application is shown in the figure;

[0056] Figure 2 The flowchart of minimum value determination of the stroboscopic data of the gamma voltage debugging method of the display panel provided in the embodiments of the present application is shown in the figure;

[0057] Figure 3 The flowchart of intermediate bind point voltage determination of the gamma voltage debugging method of the display panel provided in the embodiments of the present application is shown in the figure;

[0058] Figure 4 The flowchart of bind point voltage determination of the gamma voltage debugging method of the display panel provided in the embodiments of the present application is shown in the figure;

[0059] Figure 5A structural schematic diagram of a gamma voltage debugging system of a display panel provided by an embodiment of the present application is shown in the figure;

[0060] Reference numerals: 10 - display panel; 20 - detection device; 30 - debugging device. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0062] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, at least one of which can be one, two or more, unless otherwise explicitly specified.

[0063] Applicants have noticed that in the prior art display panel 10, the gamma voltage compensation is mainly achieved by manually adjusting the binding point voltage, which is tedious and time-consuming, and affects the user experience.

[0064] Therefore, an embodiment of the present application provides a display panel 10 debugging method for debugging the variable frequency image quality of the display panel 10, comprising:

[0065] Step 101, a plurality of frequency binding points of the display panel 10 are preset, and the plurality of frequency binding points include a reference frequency binding point; specifically, the frequency range of the display panel 10 is 0-360Hz, and in some embodiments, 48Hz, 96Hz, 128Hz, 160Hz, 192Hz, 224Hz, 260Hz, 292Hz, 324Hz and 360Hz are selected as 10 frequency binding points, and a plurality of frequency bands are divided, so that the gamma voltage compensation is more accurate, and the PGAMMA voltage of the frequency binding point is adjusted to achieve the best color display effect of the display panel 10. Further, in order to reduce the flicker phenomenon caused by the change of brightness during variable frequency, the brightness at different frequencies needs to be adjusted to be consistent when adjusting the voltage.

[0066] At step 102, a plurality of reference bind point voltages corresponding to the reference frequency bind point are determined. Specifically, in the embodiment of the present application, the reference frequency bind point serves as a standard reference, and the plurality of reference bind point voltages corresponding to the reference frequency bind point are determined first, and then the bind point voltages corresponding to the remaining frequency bind points are determined based on the plurality of reference bind point voltages as the standard reference. In this way, the reference voltages corresponding to the respective frequency bind points are linked together to improve the color performance of the display panel 10. Further, the reference frequency bind point is the frequency bind point with the highest frequency among the plurality of frequency bind points, so that the accuracy of the standard reference can be further improved.

[0067] At step 103, a plurality of bind point voltages corresponding to each of the remaining frequency bind points are determined based on the reference frequency bind point and the plurality of reference bind point voltages; the remaining frequency bind points are the frequency bind points other than the reference frequency bind point among the plurality of frequency bind points; specifically, the brightness of the display panel 10 is directly related to the bind point voltage, and referring to the reference bind point voltage actually also refers to the brightness at the reference frequency, so that the reference voltages corresponding to the respective frequency bind points and the brightness are linked together to improve the display consistency of the display panel 10.

[0068] Finally, based on all the reference bind point voltages and all the bind point voltages, the voltage of the display panel 10 at different frequency bind points is adjusted in the embodiment of the present application to adjust the variable frequency image quality of the display panel 10. Specifically, the determination of the reference bind point voltage and the bind point voltage in the present application, and the adjustment of the variable frequency image quality of the display panel 10 are all automatically realized by a computer, so that the existing manual adjustment method can be replaced to improve the adjustment efficiency of the display panel 10.

[0069] In some embodiments, step 102 of determining a plurality of reference bind point voltages corresponding to the reference frequency bind point comprises:

[0070] At step 201, a plurality of gray scales corresponding to the reference frequency bind point are determined, and the plurality of gray scales include a minimum gray scale, a maximum gray scale, and at least one intermediate gray scale between the maximum gray scale and the minimum gray scale; specifically, the display panel 10 of the present application preferably sets seven gray scales, which are 0 gray scale, 1 gray scale, 31 gray scale, 127 gray scale, 223 gray scale, 254 gray scale and 255 gray scale, to adapt to the CSPI protocol.

[0071] At step 202, a minimum bind point voltage corresponding to the minimum gray scale and a maximum bind point voltage corresponding to the maximum gray scale are determined based on a preset contrast ratio and a preset transmittance of the display panel 10; specifically, before the display panel 10 is shipped, the recipient will propose the demand for the contrast ratio and the transmittance according to the actual use demand, and the demand is determined as the preset contrast ratio and the preset transmittance, and then the brightness and the bind point voltage corresponding to the respective 0 gray scale and 255 gray scale are determined and used as the reference standard for the subsequent steps.

[0072] Step 203, obtaining preset luminance of each intermediate gray scale according to luminance of the maximum gray scale and preset gamma value; specifically, the luminance of all gray scales should meet the preset gamma value, and in some embodiments, the preset gamma value is 2.2. Therefore, in the present application, in some embodiments, the luminance of each intermediate gray scale is obtained according to the following formula:

[0073] Lv Gray = Lv Graymax ×(Gray / Graymax) gamma , (1)

[0074] wherein Lv Gray is the luminance of each intermediate gray scale, Lv Graymax is the luminance of the maximum gray scale, Gray is each gray scale in the intermediate gray scale, Graymax is the maximum gray scale, and gamma is the preset gamma value.

[0075] For example, when the maximum gray scale is 255 gray scale and the preset gamma value is 2.2, the luminance Lv 127 of 127 gray scale is Lv 255 ×(127 / 255) 2.2 .

[0076] Step 204, determining intermediate bind point voltage of each intermediate gray scale when meeting the preset luminance and the preset gamma value; specifically, when each preset luminance is determined, the intermediate bind point voltage is determined accordingly.

[0077] Step 205, determining the minimum bind point voltage, the maximum bind point voltage and the intermediate bind point voltage as the plurality of reference bind point voltages.

[0078] Please refer to Figure 1 , Figure 1 schematic diagram of the flow of determining the reference bind point voltage of the display panel 10 debugging method provided by the embodiments of the present application, and in some embodiments, the reference bind point voltage is determined by the following steps:

[0079] Step 501, determining the optimal common electrode voltage of the display panel 10; specifically, in the present application, the computer communicates with the PMIC and collects and processes data to determine the optimal common electrode voltage of the display panel 10.

[0080] Step 502, symmetrically adjusting the current bind point voltage of the display panel 10;

[0081] Step 503, judging whether the current strobe data is the strobe data minimum value, if not, adjusting the current bind point voltage asymmetrically to make the current strobe data the strobe data minimum value; if yes, adjusting the current bind point voltage asymmetrically to make the current strobe data reach a preset proportion of the strobe data minimum value; specifically, the preset proportion is 95%~100%.

[0082] Step 504, judging whether the current gamma value is equal to the preset gamma value, if yes, determining the current bind point voltage as the reference bind point voltage; if not, returning to step 502 to adjust the current bind point voltage of the display panel 10 symmetrically.

[0083] Specifically, steps 501~504 can determine the minimum bind point voltage, the maximum bind point voltage and all intermediate bind point voltages. The determination of the reference bind point voltage of the present application is automatically completed by a computer, therefore, steps 501~504 can be automatically executed in the computer to improve the determination efficiency of the reference bind point voltage of the present application.

[0084] Please refer to Figure 2 , Figure 2 The flowchart of the determination of the strobe data minimum value of the display panel 10 debugging method provided by the embodiments of the present application is shown, in some embodiments, the strobe data minimum value is obtained by the following steps:

[0085] Step 5031, obtaining the current strobe data of the display panel 10;

[0086] Step 5032, modifying the register assignment of the current bind point voltage according to the direction of voltage increase, and obtaining the first updated strobe data; specifically, the present application modifies the voltage while measuring the current strobe data, therefore, the first updated strobe data is the strobe data updated after step 5032.

[0087] Step 5033, determining the first reference value according to the current strobe data and the first updated strobe data, in the case that the first reference value is less than or equal to zero, returning to step 5032 to modify the register assignment of the current bind point voltage according to the direction of voltage increase, and obtaining the first updated strobe data; in the case that the first reference value is greater than zero, modifying the register assignment according to the direction of voltage decrease, and obtaining the second updated strobe data; the first reference value is determined according to the current strobe data and the first updated strobe data; specifically, the present application modifies the voltage while measuring the current strobe data, therefore, the second updated strobe data is the strobe data updated after step 5033.

[0088] At step 5034, a second reference value is determined according to the first updated flicker data and the second updated flicker data, in a case that the second reference value is less than or equal to zero, returning to step 5033 to modify the register assignment in a direction of voltage reduction, and obtaining the second updated flicker data; in a case that the second reference value is greater than zero, determining the second updated flicker data as the flicker data minimum value. Specifically, the second reference value is determined according to the first updated flicker data and the second updated flicker data.

[0089] In some embodiments, the first reference value and the second reference value are determined according to the following formulas:

[0090] Δ current1 = Flicker2 - Flicker1, (2)

[0091] Δ current2 = Flicker3 - Flicker2, (3)

[0092] wherein Δ current1 is the first reference value, Flicker1 is the current flicker data, Flicker2 is the first updated flicker data, Δ current2 is the second reference value, and Flicker3 is the second updated flicker data.

[0093] Referring to Figure 3 , Figure 3 FIG. 10 shows a flowchart illustrating a method for determining an intermediate bind point voltage of a display panel 10 according to an embodiment of the present application. In some embodiments, the step of determining the intermediate bind point voltage of each intermediate gray scale when the preset luminance and the preset gamma value are met at step 204 includes:

[0094] At step 2041, the register assignment of the current bind point voltage is modified.

[0095] At step 2042, the current luminance of the display panel 10 is obtained.

[0096] At step 2043, the current gamma value is obtained according to the register assignment and the current luminance.

[0097] At step 2044, it is determined whether the current gamma value is equal to the preset gamma value. If not, returning to step 2041 to modify the register assignment of the current bind point voltage. If yes, the current bind point voltage is determined as the intermediate bind point voltage.

[0098] Specifically, in the fixed-frequency debugging of the reference frequency bin, the computer is used to determine the intermediate bin voltage of the intermediate gray scale at the preset gamma value according to steps 2041-2044. In addition, the minimum bin voltage, the maximum bin voltage, and other bin voltages can also be determined according to steps 2041-2044 after obtaining the brightness of the display panel 10.

[0099] Please refer to Figure 4 , Figure 4 The flowchart of the bin voltage determination of the display panel 10 debugging method provided by the embodiments of the present application is shown. In some embodiments, step 103 determines the plurality of bin voltages corresponding to each of the remaining frequency bins according to the reference frequency bin and the plurality of reference bin voltages, comprising:

[0100] Step 301: obtaining the reference brightness of the reference frequency bin, the reference brightness including the brightness of each of the plurality of gray scales;

[0101] Step 302: symmetrically adjusting the target bin voltage of the display panel 10 corresponding to the target frequency bin; the target frequency bin being any one of the remaining frequency bins;

[0102] Step 303: collecting the target brightness of the target frequency bin;

[0103] Step 304: in the case where the difference between the target brightness and the reference brightness is less than a first preset threshold, asymmetrically adjusting the target bin voltage; specifically, in the case where the difference between the target brightness and the reference brightness is greater than the first preset threshold, returning to step 303 to collect the target brightness of the target frequency bin.

[0104] Step 305: collecting the target frequency flicker data corresponding to the target frequency bin;

[0105] Step 306: in the case where the difference between the target frequency flicker data and the minimum value of the frequency flicker data is less than a second preset threshold, collecting the updated target brightness of the target frequency bin; specifically, in the case where the difference between the target frequency flicker data and the minimum value of the frequency flicker data is greater than the second preset threshold, returning to step 304 to asymmetrically adjust the target bin voltage.

[0106] Step 307: in the case where the difference between the updated target brightness and the reference brightness is less than the first preset threshold, determining the target bin voltage corresponding to the updated target brightness as the bin voltage. Specifically, in the case where the difference between the updated target brightness and the reference brightness is greater than the first preset threshold, returning to step 302 to symmetrically adjust the target bin voltage of the display panel 10 corresponding to the target frequency bin.

[0107] Specifically, the reference brightness and the minimum value of the stroboscopic data determined by the reference frequency binding point in the application are used as the reference value for adjusting the voltage of the other frequency binding points, and the specific steps are as shown in steps 301-307. The purpose is to keep the brightness of different frequency binding points consistent under the same gray scale. It should be noted that the binding point voltage of other frequencies in the register can be completed by smooth transition and automatic filling value.

[0108] Correspondingly, the application provides a gamma voltage debugging system of a display panel for executing the above-mentioned gamma voltage debugging method of the display panel. Please refer to Figure 5 , Figure 5 The structure of the gamma voltage debugging system of the display panel provided by the application is shown in the schematic diagram, and the gamma voltage debugging system of the display panel includes a display panel 10, a detection device 20 and a debugging device 30. Wherein, the debugging device 30 is electrically connected with the display panel 10, and the debugging device 30 is electrically connected with the detection device 20, and the debugging device 30 includes a register (not shown in the figure), which is used to store all reference binding point voltages and all binding point voltages. Specifically, the debugging device 30 can be a computer, the detection device 20 can be a sensor, and the display panel 10 is a display panel 10 to be debugged.

[0109] In some embodiments, the detection device 20 is used to detect the display panel 10 and obtain the detection data of the display panel 10;

[0110] The debugging device 30 is used to output the reference binding point voltage and the binding point voltage to the display panel 10 according to the detection data, so as to debug the variable frequency quality of the display panel 10.

[0111] The application adopts the debugging device 30 to automatically adjust the binding point voltage, automatically collect and process the detection data, find the best binding point voltage, and can reduce the labor cost. At the same time, aiming at the inter-chip difference problem of the display panel 10, the binding point voltage under the variable frequency of each display panel 10 is adjusted to improve the quality performance difference between different display panels 10 and improve the variable frequency quality of the product.

[0112] In the above embodiments, the description of each embodiment has its own emphasis, and the part not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0113] The gamma voltage debugging method and system of the display panel provided by the embodiments of the present application are described in detail, and the principles and implementation manners of the present application are described by applying specific examples. The above embodiment descriptions are only used to help understand the technical solutions of the present application and the core ideas thereof. Those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for adjusting gamma voltage of a display panel, characterized in that, The method comprises the following steps: presetting a plurality of frequency binding points of the display panel, wherein the plurality of frequency binding points comprises a reference frequency binding point; determining a plurality of reference binding point voltages corresponding to the reference frequency binding point, wherein the reference binding point voltages are determined by the following steps: determining an optimal common electrode voltage of the display panel; symmetrically adjusting a current binding point voltage of the display panel; determining whether current stroboscopic data is a minimum stroboscopic data value, if not, asymmetrically adjusting the current binding point voltage so that the current stroboscopic data is the minimum stroboscopic data value; if yes, asymmetrically adjusting the current binding point voltage so that the current stroboscopic data reaches a preset proportion of the minimum stroboscopic data value; determining whether a current gamma value is equal to a preset gamma value, if yes, determining the current binding point voltage as the reference binding point voltage; if not, returning to the step of symmetrically adjusting the current binding point voltage of the display panel; determining a plurality of binding point voltages corresponding to each of the remaining frequency binding points according to the reference frequency binding point and the plurality of reference binding point voltages; the remaining frequency binding points are frequency binding points other than the reference frequency binding point in the plurality of frequency binding points.

2. The method of claim 1, wherein the method further comprises: The reference frequency binding point is the frequency maximum in the plurality of frequency binding points.

3. The method of claim 1, wherein the method further comprises: The step of determining the plurality of reference binding point voltages corresponding to the reference frequency binding point comprises: determining a plurality of gray scales corresponding to the reference frequency binding point, wherein the plurality of gray scales comprises a minimum gray scale, a maximum gray scale, and at least one intermediate gray scale between the maximum gray scale and the minimum gray scale; determining a minimum binding point voltage corresponding to the minimum gray scale and a maximum binding point voltage corresponding to the maximum gray scale according to a preset contrast ratio and a preset transmittance of the display panel; obtaining a preset luminance of each of the intermediate gray scales according to a luminance of the maximum gray scale and a preset gamma value; determining an intermediate binding point voltage of each of the intermediate gray scales when the preset luminance and the preset gamma value are met; determining the minimum binding point voltage, the maximum binding point voltage, and the intermediate binding point voltage as the plurality of reference binding point voltages.

4. The gamma voltage adjusting method of a display panel according to claim 3, wherein The luminance of each of the intermediate gray scales is obtained according to the following formula: wherein, a luminance of each of the intermediate gray scales, a luminance of the maximum gray scale, for each of the intermediate gray scales, for the maximum gray scale, is the preset gamma value.

5. The method of claim 1, wherein the method further comprises: The minimum stroboscopic data value is obtained by the following steps: obtaining current stroboscopic data of the display panel; modifying register assignment of the current binding point voltage in a direction of increasing voltage, and obtaining first updated stroboscopic data; determining a first reference value according to the current stroboscopic data and the first updated stroboscopic data, in the case that the first reference value is less than or equal to zero, returning to the step of modifying register assignment of the current binding point voltage in the direction of increasing voltage, and obtaining first updated stroboscopic data; in the case that the first reference value is greater than zero, modifying the register assignment in a direction of decreasing voltage, and obtaining second updated stroboscopic data; determining a second reference value according to the first updated stroboscopic data and the second updated stroboscopic data, in the case that the second reference value is less than or equal to zero, returning to the step of modifying the register assignment in the direction of decreasing voltage, and obtaining second updated stroboscopic data; In a case that the second reference value is greater than zero, the second updated stroboscopic data is determined as the stroboscopic data minimum value.

6. The method of claim 5, wherein the gamma voltage adjustment is performed for each of the display panels. The first reference value and the second reference value are determined according to the following formula: wherein, is the first reference value, is the current stroboscopic data, is the first updated stroboscopic data, is the second reference value, is the second updated stroboscopic data.

7. The method of claim 5, wherein the gamma voltage adjustment is performed for each of the display panels. The step of determining the intermediate bind point voltage of each intermediate gray scale when the preset luminance and the preset gamma value are met comprises: The register assignment of the current bind point voltage is modified; A current luminance of the display panel is acquired; The current gamma value is acquired according to the register assignment and the current luminance; It is judged whether the current gamma value is equal to the preset gamma value, if not, the step of modifying the register assignment of the current bind point voltage is returned, if yes, the current bind point voltage is determined as the intermediate bind point voltage.

8. The method of claim 1, wherein, The step of determining the bind point voltage corresponding to each frequency bind point in the remaining frequency bind points according to the reference frequency bind point and the plurality of reference bind point voltages comprises: A reference luminance of the reference frequency bind point is acquired, the reference luminance comprising the luminance of each gray scale in the plurality of gray scales; The display panel is symmetrically adjusted at a target bind point voltage corresponding to a target frequency bind point; the target frequency bind point is any one of the remaining frequency bind points; A target luminance of the target frequency bind point is acquired; In a case that a difference between the target luminance and the reference luminance is less than a first preset threshold, the target bind point voltage is asymmetrically adjusted; A target stroboscopic data corresponding to the target frequency bind point is acquired; In a case that a difference between the target stroboscopic data and the stroboscopic data minimum value is less than a second preset threshold, an updated target luminance of the target frequency bind point is acquired; In a case that a difference between the updated target luminance and the reference luminance is less than the first preset threshold, a target bind point voltage corresponding to the updated target luminance is determined as the bind point voltage.

9. A gamma voltage tuning system of a display panel, characterized by, A display panel for performing the gamma voltage debugging method according to any one of claims 1 to 8, comprising: A display panel; A detection device; A debugging device, the debugging device being electrically connected with the display panel, and the debugging device being electrically connected with the detection device, the debugging device comprising a register, the register being used for storing all reference bind point voltages and all bind point voltages.

10. The gamma voltage debugging system of claim 9, wherein, The detection device is used for detecting the display panel and acquiring detection data of the display panel; The debugging device is used for outputting the reference bind point voltages and the bind point voltages to the display panel according to the detection data, so as to debug the variable frequency image quality of the display panel.

Images