Gamma adjustment method and device of display panel and electronic equipment

Abstract

The application discloses a gamma adjustment method and device of a display panel and electronic equipment. The method comprises the following steps: obtaining a pre-burned gamma voltage corresponding to each binding point gray scale; driving the display panel to display a picture based on the corresponding pre-burned gamma voltage for any binding point gray scale; if the display brightness of the current display picture meets a target brightness range corresponding to the binding point gray scale, determining the pre-burned gamma voltage as a target gamma voltage corresponding to the binding point gray scale, and the target brightness range is determined based on the binding point gray scale and a preset gamma value range. The application can directly drive the display panel to display a picture by using the pre-burned gamma voltage, and no longer performs gamma correction when the display brightness meets the specifications, thereby saving the time for gamma adjustment of the display panel in the production process, shortening the overall operation time of the display panel, and improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a gamma adjustment method and device of a display panel and electronic equipment. BACKGROUND

[0002] A display panel, such as an LCD (Liquid Crystal Display) display panel, has an exponential relationship between gray scale and display brightness. The exponential value corresponding to the exponential relationship is usually referred to as a gamma value. When the gamma value is 2.2, the change between the display brightness corresponding to each gray scale is most consistent with the perception of the human eye. Therefore, 2.2±0.2 is usually taken as the qualified range of the gamma value of the display panel.

[0003] After production, the display panel usually undergoes gamma detection. For a display panel with an initial gamma value outside the qualified range due to process or other reasons, gamma adjustment is needed. The method of gamma adjustment mainly involves repeatedly comparing the display brightness detected by a sensor at a test gray scale, and then adjusting the display brightness by adjusting the gamma voltage until the gamma value between the display brightness and the gray scale meets the qualified range. However, this adjustment process usually takes a long time, so the adjustment efficiency is low, which affects the overall production time of the display panel. SUMMARY

[0004] Embodiments of the present application provide a gamma adjustment method, device and electronic equipment of a display panel to reduce the time for gamma adjustment of the display panel, thereby shortening the overall production time of the display panel.

[0005] To solve the above technical problems, embodiments of the present application disclose the following technical solutions:

[0006] In a first aspect, a gamma adjustment method of a display panel is provided, and the method comprises:

[0007] obtaining a pre-burned gamma voltage corresponding to each binding point gray scale;

[0008] For any binding point gray scale, driving the display panel to display a picture based on the corresponding pre-burned gamma voltage;

[0009] obtaining the display brightness of the current display picture;

[0010] If the display brightness meets a target brightness range corresponding to the binding point gray scale, determining the pre-burned gamma voltage as a target gamma voltage corresponding to the binding point gray scale, and the target brightness range is determined based on the binding point gray scale and a preset gamma value range.

[0011] In combination with the first aspect, the method further comprises:

[0012] If the display brightness exceeds the target brightness range corresponding to the binding point gray scale, the display panel is subjected to gamma correction based on the target brightness range to obtain a corrected gamma correction voltage.

[0013] The gamma correction voltage is determined as a target gamma voltage corresponding to the binding point gray scale.

[0014] In combination with the first aspect, the obtaining of the pre-burned gamma voltage corresponding to each binding point gray scale comprises:

[0015] An initial gamma value of each experimental panel at each binding point gray scale is obtained.

[0016] For any binding point gray scale, a candidate gamma value with the maximum probability density is obtained from the initial gamma values of the experimental panels at the binding point gray scale, and the experimental panel corresponding to the candidate gamma value is configured as a display panel to be corrected.

[0017] If the candidate gamma value exceeds the preset gamma value range, the display panel to be corrected is subjected to gamma correction to obtain a candidate gamma correction voltage.

[0018] The candidate gamma correction voltage is determined as the pre-burned gamma voltage corresponding to the binding point gray scale.

[0019] In combination with the first aspect, the method further comprises:

[0020] If the candidate gamma value satisfies the preset gamma value range, a current gamma voltage of the display panel to be corrected is determined as the pre-burned gamma voltage corresponding to the binding point gray scale.

[0021] In combination with the first aspect, for any binding point gray scale, the obtaining of the candidate gamma value with the maximum probability density from the initial gamma values of the experimental panels at the binding point gray scale comprises:

[0022] A normal distribution curve of the initial gamma values of the experimental panels at the binding point gray scale is obtained.

[0023] The candidate gamma value corresponding to the maximum probability density is obtained from the normal distribution curve.

[0024] In combination with the first aspect, the display panel is provided with a storage device and a gamma register connected electrically, and the gamma register is used to provide a gamma voltage to the display panel to drive the display panel to display a picture.

[0025] The driving of the display panel to display a picture based on the corresponding pre-burned gamma voltage for any binding point gray scale comprises:

[0026] For any binding point gray scale corresponding to the pre-burn gamma voltage, the pre-burn gamma register value corresponding to the pre-burn gamma voltage is obtained;

[0027] The pre-burn gamma register value is written into the storage device, wherein the gamma register is configured to obtain the pre-burn gamma register value and generate a corresponding pre-burn gamma voltage, so that the display panel displays a picture according to the corresponding brightness.

[0028] In combination with the first aspect, the method further comprises:

[0029] The first number of display panels in a preset period is counted, and the second number of display panels in the first number of display panels that have not undergone gamma correction is counted;

[0030] Based on the first number and the second number, the free correction rate of all display panels that have not undergone gamma correction is determined;

[0031] If the free correction rate exceeds a preset range, the pre-burn gamma voltage corresponding to each binding point gray scale is updated.

[0032] The second aspect provides a gamma adjustment device of a display panel, the device comprising:

[0033] The voltage acquisition module is configured to obtain a pre-burn gamma voltage corresponding to each binding point gray scale;

[0034] The display control module is configured to drive the display panel to display a picture based on the pre-burn gamma voltage corresponding to any binding point gray scale;

[0035] The brightness detection module is configured to obtain the display brightness of a current display picture;

[0036] The gamma voltage determination module is configured to determine the pre-burn gamma voltage as a target gamma voltage corresponding to the binding point gray scale if the display brightness meets a target brightness range corresponding to the binding point gray scale, and the target brightness range is determined based on the binding point gray scale and a preset gamma value range.

[0037] In combination with the second aspect, the device further comprises:

[0038] The gamma voltage adjustment module is configured to perform gamma correction on the display panel based on the target brightness range if the display brightness exceeds the target brightness range corresponding to the binding point gray scale, and obtain a corrected gamma correction voltage;

[0039] The gamma voltage determination module is further configured to determine the gamma correction voltage as the target gamma voltage corresponding to the binding point gray scale.

[0040] In a third aspect, an electronic device is provided, which includes a processor and a memory; wherein the memory is configured to store a computer program, and the computer program is loaded and executed by the processor to implement the aforementioned gamma adjustment method of the display panel, or the processor adopts the aforementioned gamma adjustment device of the display panel.

[0041] One of the above technical solutions has the following advantages or beneficial effects:

[0042] Compared with the prior art, the gamma adjustment method of the display panel provided by the present application comprises the following steps: obtaining a pre-burned gamma voltage corresponding to each binding point gray scale; for any binding point gray scale, driving the display panel to display a picture based on the corresponding pre-burned gamma voltage; if the display brightness of the display panel meets the target brightness range corresponding to the binding point gray scale, determining the pre-burned gamma voltage as the target gamma voltage corresponding to the binding point gray scale, and the target brightness range is determined based on the binding point gray scale and a preset gamma value range. The gamma adjustment method provided by the present application can directly drive the display panel to display a picture by using the pre-burned gamma voltage set in advance, and no gamma correction is performed when the display brightness meets the specification, so that the time for gamma adjustment of the display panel in the production process can be saved, thereby shortening the overall operation time of the display panel and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0043] 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. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0044] Figure 1 A schematic diagram of the gamma characteristic curve between the gray scale and the display brightness of the display panel;

[0045] Figure 2 A schematic diagram of the application scenario of the gamma adjustment method of the display panel provided by the embodiments of the present application;

[0046] Figure 3 A schematic diagram of the overall flow of the gamma adjustment method of the display panel of the embodiments of the present application;

[0047] Figure 4 A schematic diagram of the flow of the display panel obtaining gamma voltage in the embodiments of the present application;

[0048] Figure 5 A schematic diagram of the structure of the gamma adjustment device of the display panel of the embodiments of the present application;

[0049] Figure 6A structural schematic diagram of an electronic device according to an embodiment of the present application;

[0050] Reference signs: 101-electronic device, 102-display panel, 103-storage device, 104-gamma register, 501-voltage acquisition module, 502-display control module, 503-brightness detection module, 504-gamma voltage determination module, 61-processor, 62-memory, 63-power supply, 64-communication interface, 65-input / output interface, 66-communication bus, 621-operating system, 622-computer program, 623-data. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used 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 addition, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0052] Please refer to Figure 1 , Figure 1 The gamma characteristic curve between the gray scale and the display brightness of the display panel is illustrated. The display panel has an exponential distribution relationship curve A between the gray scale and the display brightness, which is usually referred to as a gamma characteristic curve. Specifically, the gamma characteristic curve can be represented by the following formula (1):

[0053] Y = X γ (1)

[0054] In formula (1), Y is the display brightness of the display panel, X is the gray scale of the display panel, and γ is the gamma value.

[0055] When the gamma value is 2.2, the change between the display brightness corresponding to each gray scale displayed by the display panel is relatively uniform, and is also most consistent with the perception of the human eye. Therefore, 2.2±0.2 is usually taken as the qualified range of the gamma value. After production, the display panel usually undergoes gamma detection. For the display panel whose initial gamma value exceeds the qualified range due to process or other reasons, gamma adjustment is needed to make the gamma value meet the qualified range. The method of gamma adjustment is mainly to repeatedly compare the display brightness detected by the sensor at the test gray scale, and then adjust the display brightness by adjusting the gamma voltage for multiple times until the gamma value between the display brightness and the gray scale meets the qualified range. However, this adjustment process usually takes about 20 seconds, which greatly reduces the overall production time of the display panel.

[0056] In view of the existing problems, the present application provides a gamma adjustment method of a display panel, which evaluates the initial state of the display panel in advance, and provides a group of pre-burned gamma voltages corresponding to each binding point gray scale in advance. The display panel is driven to display a picture by using the pre-burned gamma voltage, and the display brightness is detected. If the display brightness is compliant, no gamma correction is performed, thereby saving the time for gamma adjustment of the display panel in the production process, and shortening the overall operation time.

[0057] The gamma adjustment method of the display panel provided in the embodiments of the present application can be applied to the application scenario as shown in Figure 2 The application scenario includes an electronic device 101 and a display panel 102. The electronic device 101 can be an electronic device with a data processing function, and can perform gamma adjustment on the display panel 102. The electronic device 101 can be a smart phone, a tablet computer, a notebook computer, a desktop computer, a wearable device, etc. The display panel 102 can be various types of display panels, such as an LCD display panel, etc. The electronic device 101 can communicate with the display panel 102. In a specific application scenario, the electronic device 101 obtains pre-burned gamma voltages corresponding to each binding point gray scale. For any binding point gray scale, the display panel 102 is driven to display a picture based on the corresponding pre-burned gamma voltage. If the display brightness of the display panel 102 meets the target brightness range corresponding to the binding point gray scale, the pre-burned gamma voltage is determined as the target gamma voltage corresponding to the binding point gray scale. Therefore, the display panel 102 is directly driven to display a picture at the corresponding binding point gray scale by using the pre-burned gamma voltage set in advance, and gamma adjustment is only performed when the display brightness of the display panel 102 meets the specification, thereby effectively saving the time for gamma correction and improving the production efficiency of the display panel 102.

[0058] Please refer to Figure 3 ,Figure 3 The overall flow of the gamma adjustment method of the display panel is illustrated. The gamma adjustment method of the display panel comprises the following steps:

[0059] Step 301: Obtain the pre-burned gamma voltage corresponding to each bind point gray scale.

[0060] It can be understood that since the display panel 102 includes a plurality of pixel units, each pixel unit corresponds to a gamma voltage through a corresponding driving circuit, and therefore the pre-burned gamma voltage corresponding to each bind point gray scale is used to drive each pixel unit to display the brightness under the corresponding bind point gray scale.

[0061] In some embodiments, the pre-burned gamma voltage corresponding to each bind point gray scale can be obtained by the following steps:

[0062] Step one, obtain the initial gamma value of each experimental panel under each bind point gray scale.

[0063] Specifically, the experimental panel can be a display panel of a preset batch, and the specific number can be set according to requirements, for example, the data of 100 display panels can be collected as the data of the experimental panel.

[0064] It can be understood that the initial gamma value of each experimental panel under each bind point gray scale can be within the qualified range of 2.2±0.2 gamma value, or can be outside the qualified range of 2.2±0.2 gamma value. The initial gamma values of different bind point gray scales of the same experimental panel form a set of initial gamma data corresponding to the experimental panel.

[0065] In the above manner, the initial state of the display panel can be obtained through the method of big data, that is, the initial gamma value distribution of the display panel can be understood, which is beneficial to better master the influence of the production process on the gamma value.

[0066] Step two, for any bind point gray scale, obtain the candidate gamma value with the maximum probability density from the initial gamma values of each experimental panel under the bind point gray scale. The experimental panel corresponding to the candidate gamma value is configured as a display panel to be corrected.

[0067] In some examples, the candidate gamma value with the maximum probability density can be obtained by the following method:

[0068] First step, obtain the normal distribution curve of the initial gamma values of each experimental panel under the bind point gray scale.

[0069] Specifically, for the same binding point gray scale, the initial gamma values of each experimental panel constitute a set of discrete data. After the data interval is determined, the number of initial gamma values in each data interval is counted, and the probability density of the initial gamma values in the data interval is obtained. Finally, according to the probability density of the initial gamma values in each data interval, a normal distribution curve is fitted by a fitting method, such as the least squares method.

[0070] Secondly, a candidate gamma value corresponding to the maximum probability density is obtained from the normal distribution curve.

[0071] Specifically, the candidate gamma value corresponding to the maximum probability density on the normal distribution curve is the expected value of the distribution of this set of discrete data.

[0072] It should be noted that if the candidate gamma value corresponding to the maximum probability density is not in this set of discrete data, the initial gamma value closest to the candidate gamma value in this set of discrete data should be determined as the candidate gamma value for subsequent calculation.

[0073] Step three, if the candidate gamma value exceeds the preset gamma value range, the display panel to be corrected is subjected to gamma correction to obtain a candidate gamma correction voltage.

[0074] Specifically, the preset gamma value range is 2.2±0.2.

[0075] Exemplarily, the display panel to be corrected can be subjected to gamma correction by using related technologies, such as repeatedly adjusting the current gamma voltage of the display panel to be corrected and repeatedly detecting the display brightness of the display panel to be corrected until the display brightness and the current gamma voltage satisfy the exponential relationship within the preset gamma value range. At this time, the current gamma voltage is the candidate gamma correction voltage.

[0076] Step four, the candidate gamma correction voltage is determined as the pre-burned gamma voltage corresponding to the binding point gray scale.

[0077] That is to say, the pre-burned gamma voltage of the display panel 102 at the binding point gray scale is the candidate gamma correction voltage.

[0078] In addition, the following step five parallel to step three can also be included:

[0079] Step five, if the candidate gamma value satisfies the preset gamma value range, the current gamma voltage of the display panel to be corrected is determined as the pre-burned gamma voltage corresponding to the binding point gray scale.

[0080] That is to say, the pre-burned gamma voltage of the display panel 102 at the binding point gray scale is the current gamma voltage corresponding to the candidate gamma value of the display panel to be corrected.

[0081] By the above manner, the gamma value of the display panel 102 is pre-compensated by the gamma voltage corresponding to the display panel to be corrected and meeting the preset gamma value range. Since the display panel to be corrected can best reflect the gamma value distribution of the batch of experimental panels, after the gamma value of the display panel to be corrected is pulled to the preset gamma value range, it can be ensured that the gamma value of the display panel 102 is also in the preset gamma value range. That is, by correcting the gamma value of the display panel to be corrected in advance, the number of display panels 102 that need to be adjusted in the production process is reduced, and thus the overall operation time can be shortened.

[0082] Step 302: driving the display panel 102 to display a picture based on the corresponding pre-burned gamma voltage for any binding point gray scale.

[0083] Please refer to Figure 4 , Figure 4 The flow of the display panel obtaining the gamma voltage in the embodiment of the application is shown. In some embodiments, the display panel 102 is provided with a storage device 103 and a gamma register 104 connected by electricity, and the gamma register 104 is used to provide the display panel 102 with a gamma voltage to drive the display panel 102 to display a picture. The gamma register 104 generates a corresponding gamma voltage according to a gamma register value, which can also be called a gamma code. Since the gamma register 104 has no storage function, the gamma code is usually stored in the storage device 103, that is, a set of gamma codes corresponding to each binding point gray scale can be stored in the storage device 103. For example, the storage device 103 can be an XB flash chip.

[0084] In some examples, step 302 can be performed by the following manner:

[0085] Step one, for the pre-burned gamma voltage corresponding to any binding point gray scale, obtaining the pre-burned gamma register value corresponding to the pre-burned gamma voltage.

[0086] Step two, write the pre-burned gamma register value into the storage device 103, wherein the gamma register 104 is configured to obtain the pre-burned gamma register value and generate a corresponding pre-burned gamma voltage, so that the display panel 102 displays a picture according to the corresponding brightness.

[0087] By the above manner, the display panel 102 can display the brightness after pre-compensation when it is turned on, and the logic is simple and easy to operate.

[0088] Step 303: obtaining the display brightness of the current display picture.

[0089] Specifically, the display brightness of the current display screen of the display panel 102 can be detected by a brightness sensor or a brightness meter.

[0090] Step 304: If the display brightness meets the target brightness range corresponding to the bind point gray scale, the pre-burned gamma voltage is determined as the target gamma voltage corresponding to the bind point gray scale, wherein the target brightness range is determined based on the bind point gray scale and the preset gamma value range.

[0091] It can be understood that the method of the embodiment of the present application adjusts the gamma voltage by adjusting the gamma register value, adjusts the display brightness by adjusting the gamma voltage, and thus achieves the purpose of adjusting the gamma value. In the case of known bind point gray scale and display brightness, the gamma value can be calculated in combination with the brightness of the display panel 102 in the full-bright state and the brightness in the full-dark state. Then, the target brightness range can be calculated based on the preset gamma value range and the bind point gray scale.

[0092] In some embodiments, after step 303 is performed, the following step can be further included, which can be performed in parallel with step 304:

[0093] Step one: If the display brightness exceeds the target brightness range corresponding to the bind point gray scale, the display panel 102 is subjected to gamma correction based on the target brightness range to obtain a corrected gamma correction voltage.

[0094] Specifically, the display brightness of the display panel 102 is adjusted to be within the target brightness range by adjusting the gamma voltage, that is, the gamma correction is completed.

[0095] Step two: The gamma correction voltage is determined as the target gamma voltage corresponding to the bind point gray scale.

[0096] In the above manner, the gamma adjustment step is only performed on the display panel 102 whose brightness is not qualified after pre-compensation, and the gamma adjustment step is not performed on the display panel 102 whose brightness is qualified after pre-compensation, so that the number and time of gamma adjustment can be reduced, the efficiency of gamma adjustment can be improved, and the working time can be reduced.

[0097] In some embodiments, after step 304 is performed, the gamma adjustment method of the embodiment of the present application further includes:

[0098] Step one: The first number of display panels 102 in a preset period of time is counted, and the second number of display panels 102 that have not been subjected to gamma correction among the first number of display panels 102 is counted.

[0099] Step two: Based on the first number and the second number, the exemption rate of the display panels 102 that have not been subjected to gamma correction among all the display panels 102 is determined.

[0100] Specifically, the quotient of the second quantity and the first quantity, i.e., the correction-free rate, is the proportion of the display panel 102 that does not need to be subjected to gamma correction.

[0101] It can be understood that the preset period can change in real time, for example, the correction-free rate of the display panel 102 can be continuously counted and calculated, or the correction-free rate of the display panel 102 can be periodically counted and calculated.

[0102] Step three, if the correction-free rate exceeds the preset range, the pre-burned gamma voltage corresponding to each binding point gray scale is updated.

[0103] For example, if the correction-free rate is less than the preset threshold, new experimental panel data is collected again, and the pre-burned gamma voltage corresponding to each binding point gray scale is re-determined by using the steps of the foregoing embodiments, and then the subsequent display panel 102 is pre-compensated by using the pre-burned gamma voltage corresponding to each binding point gray scale that is re-determined. In this way, the gamma voltage can be dynamically adjusted, so that the gamma value of the display panel 102 can be located in the qualified range to the greatest extent, and the number and length of times of gamma adjustment of the display panel 102 can be further reduced.

[0104] It can be understood that the method of the embodiments of the present application can directly drive the display panel to display a picture corresponding to a binding point gray scale by using the pre-burned gamma voltage that is set in advance, and gamma correction is no longer performed when it is detected that the display brightness meets the specifications, so that the time for gamma adjustment of the display panel in the production process can be saved, thereby shortening the overall operation time of the display panel and improving the production efficiency.

[0105] Correspondingly, please refer to Figure 5 , Figure 5 The structure diagram of the gamma adjustment device of the display panel of the embodiments of the present application is shown. The gamma adjustment device of the display panel provided by the embodiments of the present application can implement the gamma adjustment method of the display panel disclosed in any of the foregoing embodiments, and the device comprises a voltage acquisition module 501, a display control module 502, a brightness detection module 503, and a gamma voltage determination module 504.

[0106] The voltage acquisition module 501 is configured to acquire the pre-burned gamma voltage corresponding to each binding point gray scale.

[0107] The display control module 502 is configured to drive the display panel 102 to display a picture based on the corresponding pre-burned gamma voltage for any binding point gray scale.

[0108] The brightness detection module 503 is configured to acquire the display brightness of the current display picture.

[0109] The gamma voltage determination module 504 is configured to determine the pre-burn-in gamma voltage as the target gamma voltage corresponding to the bind point gray scale if the display brightness meets the target brightness range corresponding to the bind point gray scale, and the target brightness range is determined based on the bind point gray scale and a preset gamma value range.

[0110] In some embodiments, the apparatus further includes:

[0111] The gamma voltage adjustment module is configured to perform gamma correction on the display panel 102 based on the target brightness range if the display brightness exceeds the target brightness range corresponding to the bind point gray scale, and obtain a corrected gamma correction voltage.

[0112] The gamma voltage determination module 504 is further configured to determine the gamma correction voltage as the target gamma voltage corresponding to the bind point gray scale.

[0113] In some embodiments, the voltage obtaining module 501 is specifically configured to:

[0114] Obtain the initial gamma value of each experimental panel at each bind point gray scale.

[0115] For any bind point gray scale, obtain a candidate gamma value with the maximum probability density from the initial gamma values of the experimental panels at the bind point gray scale, and the experimental panel corresponding to the candidate gamma value is configured as the display panel to be corrected.

[0116] If the candidate gamma value exceeds the preset gamma value range, perform gamma correction on the display panel to be corrected to obtain a candidate gamma correction voltage.

[0117] Determine the candidate gamma correction voltage as the pre-burn-in gamma voltage corresponding to the bind point gray scale.

[0118] In some embodiments, the voltage obtaining module 501 is specifically further configured to:

[0119] If the candidate gamma value meets the preset gamma value range, determine the current gamma voltage of the display panel to be corrected as the pre-burn-in gamma voltage corresponding to the bind point gray scale.

[0120] In some embodiments, the voltage obtaining module 501 is specifically configured to:

[0121] Obtain a normal distribution curve of the initial gamma values of the experimental panels at the bind point gray scale.

[0122] Obtain a candidate gamma value corresponding to the maximum probability density from the normal distribution curve.

[0123] In some embodiments, the display panel 102 is provided with a storage device 103 and a gamma register 104 connected by electricity, and the gamma register 104 is configured to provide a gamma voltage to the display panel 102 to drive the display panel 102 to display a picture.

[0124] The display control module 502 is specifically configured to:

[0125] For any binding point gray scale corresponding pre-burn gamma voltage, the pre-burn gamma register value corresponding to the pre-burn gamma voltage is obtained.

[0126] The pre-burn gamma register value is written into the storage device 103, wherein the gamma register 104 is configured to obtain the pre-burn gamma register value and generate the corresponding pre-burn gamma voltage, so that the display panel 102 displays the picture according to the corresponding brightness.

[0127] In some embodiments, the apparatus further comprises:

[0128] The correction-free rate monitoring module is configured to count the first number of the display panels 102 within a preset period of time, and the second number of the display panels 102 among the first number of the display panels 102 that do not perform gamma correction. Furthermore, based on the first number and the second number, the correction-free rate of all the display panels 102 that do not perform gamma correction is determined. If the correction-free rate exceeds a preset range, the pre-burn gamma voltage corresponding to each binding point gray scale is updated.

[0129] The above-mentioned gamma adjustment apparatus of the display panel can directly drive the display panel 102 to display the picture under the corresponding binding point gray scale by using the pre-burn gamma voltage set in advance, and no longer performs gamma correction when the display brightness meets the specifications. Therefore, the time for the display panel 102 to perform gamma adjustment in the production process can be saved, thereby shortening the overall operation time of the display panel 102 and improving the production efficiency.

[0130] Correspondingly, please refer to Figure 6 , Figure 6 The structural diagram of the electronic device of the embodiment of the present application is shown. The electronic device can specifically include at least one processor 61, at least one memory 62, a power supply 63, a communication interface 64, an input / output interface 65, and a communication bus 66. The memory 62 is used to store a computer program, which is loaded and executed by the processor 61 to implement the related steps in the gamma adjustment method of the display panel disclosed in any of the preceding embodiments. Alternatively, the processor 61 can adopt the gamma adjustment apparatus of the display panel disclosed in any of the preceding embodiments.

[0131] In this embodiment, the power supply 63 is configured to provide operating voltage for each hardware device on the electronic device; the communication interface 64 is configured to create a data transmission channel between the electronic device and external devices, and the communication protocol followed by the communication interface 64 can be any communication protocol applicable to the technical solution of the present application, which is not limited herein; the input / output interface 65 is configured to obtain external input data or output data to the outside, and the specific interface type can be selected according to the specific application needs, which is not limited herein.

[0132] In addition, the memory 62 as a carrier for storing resources can be a read-only memory, a random access memory, a magnetic disk or an optical disk, etc., and the resources stored thereon include an operating system 621, a computer program 622 and data 623, etc., and the storage mode can be temporary storage or permanent storage. The operating system 621 is configured to manage and control each hardware device on the electronic device and the computer program 622, so as to realize the operation and processing of the processor 61 on the data 623 in the memory 62, and the operating system 621 can be Windows Server, Netware, Unix, Linux, etc. In addition to the computer program capable of completing the gamma adjustment method of the display panel disclosed in any of the preceding embodiments, the computer program 622 can further include a computer program capable of completing other specific work. In addition to the data such as update information of the application program, the data 623 can also include the data such as the developer information of the application program.

[0133] The electronic device can be a terminal, and the terminal can specifically include but is not limited to a spliced screen, a smart television, a smart phone, a tablet computer, a notebook computer or a desktop computer, etc.

[0134] Correspondingly, the present application further provides a storage medium, wherein the storage medium stores computer executable instructions, and the computer executable instructions are loaded and executed by a processor to realize the gamma adjustment method of the display panel 102 disclosed in any of the preceding embodiments. The specific steps of the method can refer to the corresponding content disclosed in the preceding embodiments, which will not be repeated here.

[0135] The above describes in detail the gamma adjustment method, device and electronic device of the display panel provided by the embodiments of the present application. The principles and implementation manners of the present application are described by applying specific examples. The above embodiment is only used to help understand the technical solution and core idea of the present application; those skilled in the art should understand that the technical solution recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A gamma adjustment method of a display panel, characterized by, The method comprises: obtaining a pre-burn-in gamma voltage corresponding to each binding point gray scale; wherein the obtaining of the pre-burn-in gamma voltage corresponding to each binding point gray scale comprises: obtaining initial gamma values of each experimental panel at each binding point gray scale; for any binding point gray scale, obtaining a candidate gamma value with the maximum probability density from the initial gamma values of each experimental panel at the binding point gray scale, the candidate gamma value corresponding to an experimental panel configured as a display panel to be corrected; if the candidate gamma value exceeds a preset gamma value range, performing gamma correction on the display panel to be corrected to obtain a candidate gamma correction voltage; and determining the candidate gamma correction voltage as the pre-burn-in gamma voltage corresponding to the binding point gray scale; for any binding point gray scale, driving the display panel to display a picture based on the corresponding pre-burn-in gamma voltage; obtaining a display brightness of a current display picture; if the display brightness meets a target brightness range corresponding to the binding point gray scale, determining the pre-burn-in gamma voltage as a target gamma voltage corresponding to the binding point gray scale, and the target brightness range is determined based on the binding point gray scale and a preset gamma value range.

2. The gamma adjustment method of a display panel according to claim 1, wherein, The method further comprises: if the display brightness exceeds the target brightness range corresponding to the binding point gray scale, performing gamma correction on the display panel based on the target brightness range to obtain a corrected gamma correction voltage; and determining the gamma correction voltage as the target gamma voltage corresponding to the binding point gray scale.

3. The gamma adjustment method of a display panel according to claim 1, wherein, The method further comprises: if the candidate gamma value meets the preset gamma value range, determining a current gamma voltage of the display panel to be corrected as the pre-burn-in gamma voltage corresponding to the binding point gray scale.

4. The gamma adjustment method of a display panel according to claim 1, wherein, For any binding point gray scale, obtaining a candidate gamma value with the maximum probability density from the initial gamma values of each experimental panel at the binding point gray scale comprises: obtaining a normal distribution curve of the initial gamma values of each experimental panel at the binding point gray scale; and obtaining the candidate gamma value corresponding to the maximum probability density from the normal distribution curve.

5. The gamma adjustment method of a display panel according to claim 1, wherein, The display panel is provided with a storage device and a gamma register electrically connected, and the gamma register is used to provide a gamma voltage to the display panel to drive the display panel to display a picture; For any binding point gray scale, driving the display panel to display a picture based on the corresponding pre-burn-in gamma voltage comprises: for any pre-burn-in gamma voltage corresponding to a binding point gray scale, obtaining a pre-burn-in gamma register value corresponding to the pre-burn-in gamma voltage; writing the pre-burn-in gamma register value into the storage device, wherein the gamma register is configured to obtain the pre-burn-in gamma register value and generate a corresponding pre-burn-in gamma voltage, so that the display panel displays a picture according to the corresponding brightness.

6. The gamma adjustment method of a display panel according to claim 1, wherein, The method further comprises: counting a first number of display panels in a preset period and a second number of display panels among the first number of display panels that have not been subjected to gamma correction; determining a correction-free rate of all display panels that have not been subjected to gamma correction based on the first number and the second number; and if the correction-free rate exceeds a preset range, updating the pre-burn-in gamma voltage corresponding to each binding point gray scale.

7. A gamma adjustment device for a display panel, characterized in that, The device comprises: a voltage acquisition module configured to acquire a pre-burn-in gamma voltage corresponding to each binding point gray scale; the voltage acquisition module is specifically configured to: acquire an initial gamma value of each experimental panel at each binding point gray scale; for any binding point gray scale, acquire a candidate gamma value with the maximum probability density from the initial gamma values of the experimental panels at the binding point gray scale, and the experimental panel corresponding to the candidate gamma value is configured as a display panel to be corrected; if the candidate gamma value exceeds the gamma value range, perform gamma correction on the display panel to be corrected to acquire a candidate gamma correction voltage; and determine the candidate gamma correction voltage as the pre-burn-in gamma voltage corresponding to the binding point gray scale; a display control module configured to drive a display panel to display a picture based on the corresponding pre-burn-in gamma voltage for any binding point gray scale; a brightness detection module configured to acquire a display brightness of a current display picture; a gamma voltage determination module configured to determine the pre-burn-in gamma voltage as a target gamma voltage corresponding to the binding point gray scale if the display brightness meets a target brightness range corresponding to the binding point gray scale, and the target brightness range is determined based on the binding point gray scale and a preset gamma value range.

8. The gamma adjustment apparatus of the display panel according to claim 7, wherein, The device further comprises: a gamma voltage adjustment module configured to perform gamma correction on the display panel based on the target brightness range if the display brightness exceeds the target brightness range corresponding to the binding point gray scale to acquire a corrected gamma correction voltage; the gamma voltage determination module is further configured to determine the gamma correction voltage as the target gamma voltage corresponding to the binding point gray scale.

9. An electronic device, comprising: The electronic device comprises a processor and a memory; wherein the memory is configured to store a computer program, the computer program is loaded and executed by the processor to implement the gamma adjustment method of the display panel according to any one of claims 1 to 6, or the processor adopts the gamma adjustment device of the display panel according to claim 7 or 8.

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