Method, device and system for obtaining compensation basis data of display panel, and storage medium

Abstract

Embodiments of the present application disclose a compensation basis data acquisition method, acquisition device, acquisition system and storage medium for a display panel, which simultaneously acquires compensation basis data for different display panels through different acquisition areas of an image sensing plate of a camera, realizes simultaneous shooting of display screens of multiple display panels through one camera, improves overall shooting efficiency, thereby improving production efficiency of the display panel and reducing hardware equipment cost; before acquiring the compensation basis data, the image sensing plate of the camera is compensated for uniformity, so that a difference between compensation basis data acquired by each acquisition area of the image sensing plate for the same display screen is less than or equal to a set threshold, the acquisition difference between the compensation basis data of each acquisition area is reduced, the acquisition error of the compensation basis data caused by the uniformity difference of each acquisition area of the image sensing plate of the camera is reduced, and the accuracy of compensation data determined according to the compensation basis data is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a compensation basis data acquisition method, device, system and storage medium of display panel. BACKGROUND

[0002] With the development of display technology, users have higher and higher requirements for display quality. In order to improve the display quality, voltage drop compensation is widely used in display panel.

[0003] In the prior art, the compensation basis data required for voltage drop compensation is usually acquired by taking a picture of the display panel display picture through a camera.

[0004] However, the acquisition of compensation basis data in the prior art is time-consuming and the cost of acquisition hardware equipment is high. SUMMARY

[0005] The present application provides a compensation basis data acquisition method, device, system and storage medium of display panel, to improve the acquisition efficiency of compensation basis data and reduce the cost of acquisition hardware equipment.

[0006] In a first aspect, the present application provides a compensation basis data acquisition method of display panel, comprising:

[0007] Compensating the image sensing plate of the camera for uniformity, so that the difference between the compensation basis data of each acquisition area divided by the image sensing plate and the same display picture is less than or equal to a set threshold; wherein the image sensing plate comprises at least two acquisition areas;

[0008] Compensating the different display panels through different acquisition areas of the image sensing plate for compensation basis data acquisition; wherein the compensation basis data is used to determine the compensation data for brightness compensation of the display panel.

[0009] Optionally, compensating the image sensing plate of the camera for uniformity, so that the difference between the compensation basis data of each acquisition area divided by the image sensing plate and the same display picture is less than or equal to a set threshold, comprises:

[0010] Respectively acquiring the initial brightness data of the same display panel under a set display picture through each acquisition area;

[0011] Determining the area compensation value corresponding to the acquisition area according to the corresponding initial brightness data and reference brightness data of the display panel under the set display picture acquired by the acquisition area;

[0012] Compensating the corresponding acquisition area according to the area compensation value, so that the difference between the compensation basis data of each acquisition area and the same display picture is less than or equal to a set threshold.

[0013] Optionally, the display screen is set as a white screen.

[0014] Optionally, the initial brightness data of the same display panel under the set display screen is obtained by each acquisition area respectively, comprising:

[0015] The acquisition area is aligned with the display panel so that the center of the acquisition area coincides with the center of the display panel.

[0016] The brightness data of a plurality of sub-pixels in the central area of the display panel is obtained by the acquisition area, and the average value of the brightness data of the plurality of sub-pixels is taken as the initial brightness data corresponding to the acquisition area.

[0017] Optionally, before determining the area compensation value corresponding to the acquisition area according to the corresponding initial brightness data of the display panel under the set display screen obtained by the acquisition area and the reference brightness data, the method further comprises:

[0018] The corresponding initial brightness data of the display panel under the set display screen obtained by one of the acquisition areas in the image sensing panel is taken as the reference brightness data; or,

[0019] The center of the display panel is aligned with the center of the image sensing panel, and the initial brightness data of the display panel under the set display screen is obtained by the central area of the image sensing panel, and the initial brightness data of the display panel under the set display screen obtained by the central area of the image sensing panel is taken as the reference brightness data.

[0020] Optionally, the camera comprises a lens, and before the image sensing panel of the camera is compensated for uniformity so that the difference between the compensation basis data obtained by each area divided by the image sensing panel for the same display screen is less than or equal to a set threshold, the method further comprises:

[0021] The camera is compensated for lens distortion.

[0022] Optionally, the image sensing panel comprises an array of light sensing devices, and before the camera is compensated for lens distortion, the method further comprises:

[0023] The brightness of a plurality of points of a standard surface light source is obtained by the image sensing panel to obtain the light measurement values of a plurality of light sensing devices included in the array of light sensing devices of the image sensing panel.

[0024] The light measurement value deviation corresponding to the light sensing device is determined according to the obtained light measurement values, and the corresponding light sensing device is compensated according to the light measurement value deviation.

[0025] Optionally, the camera is compensated for lens distortion, comprising:

[0026] The multi-point luminance data of the display panel is acquired by the image sensing plate to obtain an actual picture corresponding to the display panel, wherein the actual picture corresponding to the display panel comprises a plurality of first straight lines extending along a first direction and a plurality of second straight lines extending along a second direction, and the first direction and the second direction are perpendicular to each other.

[0027] According to the distorted picture corresponding to the display panel acquired by the camera, the bending degree of each curve in the distorted picture is determined, and the bending degree is converted into an angle value required by a trigonometric function.

[0028] According to the angle value required by the trigonometric function, corresponding distortion compensation data is obtained, and lens distortion compensation is performed according to the distortion compensation data.

[0029] Optionally, the compensation basis data comprises first voltage drop compensation required data; the compensation basis data of different display panels is acquired simultaneously by different acquisition areas of the image sensing plate, comprising:

[0030] The acquisition area is aligned with the corresponding display panel, wherein the display panel displays any first set picture;

[0031] The display panel is cropped to obtain a corresponding placeholder area in the acquisition area;

[0032] The placeholder area is divided into a plurality of sub-areas;

[0033] The luminance data of a plurality of sub-pixels at the intersection of at least two sub-areas is acquired, and the average of the luminance data is calculated to obtain at least part of the first voltage drop compensation required data.

[0034] Optionally, the compensation basis data comprises second voltage drop compensation required data, and the compensation basis data of different display panels is acquired simultaneously by different acquisition areas of the image sensing plate, comprising:

[0035] The acquisition area is aligned with the corresponding display panel, wherein the display panel displays any second set picture;

[0036] The display panel is cropped to obtain a corresponding placeholder area in the acquisition area;

[0037] The luminance data of a plurality of sub-pixels at the center area of the display panel is acquired, and the average of the luminance data is calculated to obtain at least part of the second voltage drop compensation required data.

[0038] Optionally, the display panel areas corresponding to different acquisition areas are different; and / or the areas of different acquisition areas are different.

[0039] In a second aspect, the embodiment of the present application further provides an acquisition device of compensation basis data of a display panel, comprising:

[0040] The compensation module is configured to perform uniformity compensation on the image sensing panel of the camera, so that the compensation basis data acquired by each acquisition region of the image sensing panel for the same display screen is less than or equal to a set threshold value.

[0041] The acquisition module is configured to simultaneously acquire compensation basis data of different display panels through different acquisition regions of the image sensing panel, wherein the compensation basis data is used to determine compensation data for brightness compensation of the display panel.

[0042] In a third aspect, an embodiment of the present application further provides an acquisition system of compensation basis data of a display panel, the acquisition system comprising a camera and a plurality of display panels, and the camera is configured to acquire compensation basis data of the plurality of display panels by using the acquisition method of compensation basis data of a display panel of the first aspect.

[0043] In a fourth aspect, an embodiment of the present application further provides a storage medium having a computer program stored thereon, wherein the program is executed by a processor in a camera to implement the acquisition method of compensation basis data of a display panel of any one of the first aspect.

[0044] The acquisition method of compensation basis data of a display panel of the embodiment of the present application simultaneously acquires compensation basis data of different display panels through different acquisition regions of the image sensing panel of the camera, thereby realizing simultaneous shooting of display screens of a plurality of display panels by using one camera, improving overall shooting efficiency, and thereby improving production efficiency of the display panel, and reducing the number of cameras used for acquiring compensation basis data in batch production of the display panel, and reducing hardware equipment cost; before acquiring the compensation basis data, the image sensing panel of the camera is compensated for uniformity, so that the difference in compensation basis data acquired by each acquisition region of the image sensing panel for the same display screen is less than or equal to a set threshold value, the difference in acquisition of compensation basis data between each acquisition region is reduced, and the difference in compensation basis data acquired by each acquisition region for the same display screen is less than or equal to a set threshold value when subsequent compensation basis data of display screens of a plurality of display panels is acquired through different acquisition regions of the image sensing panel, the error in acquisition of compensation basis data caused by the uniformity of each acquisition region of the image sensing panel is reduced, and the accuracy of the compensation data determined according to the compensation basis data is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a flowchart of the acquisition method of compensation basis data of a display panel provided by an embodiment of the present application;

[0046] Figure 2 is a schematic diagram of the image sensing panel dividing the acquisition region provided by an embodiment of the present application;

[0047] Figure 3 is a flowchart of another method for acquiring compensation basis data of a display panel according to an embodiment of the present application;

[0048] Figure 4 is a schematic diagram of acquiring initial luminance data of a display panel by an acquisition area of an image sensing panel according to an embodiment of the present application;

[0049] Figure 5 is a flowchart of another method for acquiring compensation basis data of a display panel according to an embodiment of the present application;

[0050] Figure 6 is a schematic diagram of a display panel according to an embodiment of the present application;

[0051] Figure 7 is a schematic diagram of a distorted image corresponding to a display panel according to an embodiment of the present application;

[0052] Figure 8 is a flowchart of another method for acquiring compensation basis data of a display panel according to an embodiment of the present application;

[0053] Figure 9 is a schematic diagram of a process for acquiring compensation basis data according to an embodiment of the present application;

[0054] Figure 10 is a flowchart of another method for acquiring compensation basis data of a display panel according to an embodiment of the present application;

[0055] Figure 11 is a schematic diagram of another process for acquiring compensation basis data according to an embodiment of the present application;

[0056] Figure 12 is a flowchart of another method for acquiring compensation basis data of a display panel according to an embodiment of the present application;

[0057] Figure 13 is a structural schematic diagram of an acquisition device for compensation basis data of a display panel according to an embodiment of the present application;

[0058] Figure 14 is a structural schematic diagram of an acquisition system for compensation basis data of a display panel according to an embodiment of the present application. DETAILED DESCRIPTION

[0059] The application will be described in further detail below with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not to be used to limit the application. It is also to be understood that, for the purpose of description, only the parts related to the application are shown in the drawings rather than all the structures.

[0060] As described in the background, the prior art is time-consuming to obtain compensation basis data, and the cost of the obtaining device is high. The inventor has found that the reason for the above problems is that, in the prior art, the compensation basis data required for voltage drop compensation is usually obtained by taking a photo of the display screen of a display panel by one camera, so the efficiency is low, causing the compensation basis data to be obtained in a time-consuming manner. Since the compensation basis data is obtained in the production process, the production efficiency of the display panel is reduced. Meanwhile, obtaining the compensation basis data of multiple display panels requires multiple cameras, each camera taking a photo of one display panel, so the number of cameras used is large, causing the cost of the hardware device for obtaining the compensation basis data to be high.

[0061] Based on the above reasons, the embodiment of the application provides a method for obtaining compensation basis data of a display panel, Figure 1 is a flowchart of the method for obtaining compensation basis data of a display panel provided by the embodiment of the application, referring to Figure 1 The method for obtaining compensation basis data of a display panel comprises the following steps.

[0062] In step 110, the uniformity of the image sensing panel of the camera is compensated to make the difference between the compensation basis data of the same display screen obtained by each acquisition area of the image sensing panel less than or equal to a set threshold; wherein the image sensing panel comprises at least two acquisition areas.

[0063] Specifically, the camera in the embodiment can be a Mono camera or a Color camera. The camera comprises an image sensing panel. When the camera takes a photo, the compensation basis data of the display screen is obtained by the image sensing panel, and the compensation basis data is the luminance data. The image sensing panel 10 comprises a plurality of sensor devices. Inevitably, there are parameter differences in the manufacturing of each sensor device, and with the use of the camera, the devices in the image sensing panel 10 will age, which will all cause poor uniformity of the image sensing panel 10. The uniformity of the image sensing panel 10 can be measured by the difference between the luminance data of the same display screen obtained by different acquisition areas 11 of the image sensing panel 10. The greater the difference between the luminance data, the poorer the uniformity of the image sensing panel 10. Figure 2 is a schematic diagram of the image sensing panel dividing the acquisition areas provided by the embodiment of the application, referring to Figure 2 In the embodiment, the image sensing panel 10 of the camera is divided into at least two acquisition areas 11 (wherein,Figure 2 Exemplarily, the image sensing panel 10 is divided into four acquisition areas 11, and the brightness data of the display screen of each display panel 12 is acquired through each acquisition area 11, so as to acquire the brightness data of the display screen of multiple display panels 12 through one camera.

[0064] The difference between the compensation basis data of the same display screen acquired by any two acquisition areas 11 is less than or equal to the set threshold value. The difference between the compensation basis data of the same display screen acquired by two acquisition areas 11 can refer to the difference, ratio or value calculated according to other set rules of the compensation basis data of the same display screen acquired by two acquisition areas 11. The size of the set threshold value can be set according to the requirement for the uniformity of the image sensing panel, that is, the set threshold value needs to meet the requirement for the uniformity of the image sensing panel.

[0065] In this step, the uniformity compensation is performed on the image sensing panel 10, so as to eliminate the difference between the brightness data of the same display screen acquired by each acquisition area 11, so that when the brightness data of the display screen of multiple display panels 12 is acquired through the image sensing panel 10 subsequently, the difference between the brightness data of the same display screen acquired by each acquisition area 11 is less than or equal to the set threshold value, and the acquisition error of the compensation basis data caused by the difference in the uniformity of each acquisition area 11 of the image sensing panel 10 of the camera is reduced.

[0066] In step 120, the compensation basis data of different display panels is acquired simultaneously through different acquisition areas of the image sensing panel; the compensation basis data is used to determine the compensation data for brightness compensation of the display panel.

[0067] The acquisition of the compensation basis data of different display panels simultaneously through different acquisition areas of the image sensing panel means that the compensation basis data of one display panel is acquired through each acquisition area, and the display panels corresponding to different acquisition areas are different. After the uniformity compensation of the image sensing panel, the acquisition of the compensation basis data of different display panels simultaneously through different acquisition areas of the image sensing panel, the display screens of multiple display panels are photographed simultaneously through one camera Figure 2 Exemplarily, the four acquisition areas 11 of the image sensing panel 10 acquire the display screens of the four display panels 12 simultaneously, which improves the overall shooting efficiency, thereby improving the production efficiency of the display panel, and reduces the number of cameras used for acquiring the compensation basis data in batch production of the display panel, thereby reducing the cost of hardware equipment.

[0068] In this embodiment, the compensation basis data can be the acquired luminance data of the display panel, and the compensation basis data is used to determine the compensation data for compensating the display panel, which can be voltage drop compensation data or mura compensation data. Specifically, in this embodiment, the compensation basis data can be used to determine the voltage drop compensation data for compensating the display panel, and in other embodiments, the compensation basis data can be used to determine the mura compensation data for compensating the display panel. The compensation data can be used to compensate the display panel for display unevenness, so that the luminance of the display panel after compensation is uniform.

[0069] The method for acquiring compensation basis data of the display panel according to the embodiment of the present application simultaneously acquires compensation basis data of different display panels through different acquisition areas of the image sensing plate, realizes simultaneous shooting of display panels of multiple display panels through one camera, improves the overall shooting efficiency, thereby improving the production efficiency of the display panel, and reduces the number of cameras used for acquiring compensation basis data in batch production of the display panel, thereby reducing the cost of hardware equipment; before acquiring the compensation basis data, the image sensing plate of the camera is compensated for uniformity, so that the difference between the luminance data of the same display panel acquired by each acquisition area of the image sensing plate is less than or equal to a set threshold, the difference between the luminance data acquired by each acquisition area is reduced, and the subsequent acquisition of the display panel of the multiple display panels through the image sensing plate is performed, so that the difference between the luminance data of the same display panel acquired by each acquisition area is less than or equal to a set threshold, the acquisition error of the compensation basis data caused by the uniformity of each acquisition area of the image sensing plate of the camera is reduced, and the accuracy of the compensation data determined according to the compensation basis data is further ensured.

[0070] Figure 3 is a flowchart of another method for acquiring compensation basis data of a display panel provided by an embodiment of the present application, referring to Figure 3 Optionally, the method for acquiring compensation basis data of the display panel comprises:

[0071] Step 210, respectively acquiring initial luminance data of the same display panel under a set display panel through each acquisition area. The initial luminance data is the luminance data of the display panel under the set display panel.

[0072] The set display panel is a standard white panel, and the standard white panel is a full-screen white panel. In an optional embodiment, the standard white panel is a full-screen white panel under the highest gray scale. Figure 4 is a schematic diagram of an acquisition area acquiring initial luminance data of a display panel. Figure 4In the case shown in FIG. 2, the image sensing plate 10 is divided into four acquisition areas 11. In this step, the initial luminance data of the same display panel 12 under the set display screen is acquired by each acquisition area 11 one by one, that is, after the initial luminance data of the display panel under the set display screen is acquired by one acquisition area 11, the initial luminance data of the display panel under the set display screen is acquired by another acquisition area 11, and so on, until the initial luminance data of the same display panel under the set display screen is acquired by all the acquisition areas 11 of the image sensing plate.

[0073] In the step 210, when the initial luminance data of the display panel under the set display screen is acquired by each acquisition area 11, the following steps can be included:

[0074] First, the acquisition area 11 is aligned with the display panel 12, so that the center of the acquisition area 11 coincides with the center of the display panel 12, wherein, Figure 4 In the case shown, the acquisition area 11 in the upper left corner is aligned with the display panel 12. Then, the luminance data of the multiple sub-pixels in the central region of the display panel 12 (wherein the central region can be Figure 4 In the first region 13 shown in FIG. 2, the center of the first region 13 is the center of the display panel 12, and the area of the first region 13 is smaller than the area of the display panel 12. The average value of the luminance data of the multiple sub-pixels in the first region 13 is taken as the initial luminance data corresponding to the acquisition area 11.

[0075] Specifically, the display panel 12 is first aligned with one acquisition area 11. The specific alignment method can be to adjust the relative position of the image sensing plate of the camera and the display panel 12, so that the entire display panel 12 is within the acquisition range of the acquisition area 11, and the center of the acquisition area 11 coincides with the center of the display panel 12 captured by the acquisition area 11, and then the luminance data of the display panel 12 under the set display screen is acquired. The luminance data of the multiple sub-pixels in the central region of the display panel 12 is acquired by the acquisition area 11, for example, the luminance data of n*n sub-pixels in the central region of the display panel 12 can be acquired, wherein n is an integer greater than or equal to 2.

[0076] In step 220, the initial luminance data corresponding to the acquisition area of the display panel under the set display screen acquired by the acquisition area and the reference luminance data are used to determine the area compensation value corresponding to the acquisition area.

[0077] Optionally, the difference between the initial luminance data of the display panel 12 under the set display screen and the reference luminance data of the corresponding acquisition area 11 is used to determine the area compensation value of the corresponding acquisition area 11. In an optional embodiment of the present application, the reference luminance data can be obtained by other acquisition devices (which can be but not limited to a camera, a luminance meter or a color analyzer) before the present step, and then stored in the camera. In another optional embodiment of the present application, the reference luminance data can be obtained by the camera performing the present method before step 220. For example, before step 220, the initial luminance data of the display panel under the set display screen obtained by one of the acquisition areas 11 included in the image sensing plate is used as the reference luminance data, the area compensation value of the acquisition area 11 with the initial luminance data as the reference luminance data is 0, and the area compensation values of the other acquisition areas 11 can be determined according to the difference between the other acquisition areas 11 and the acquisition area 11 with the initial luminance data as the reference luminance data.

[0078] Alternatively, before step 220, the center of the display panel 12 is aligned with the center of the image sensing plate, and the initial luminance data of the display panel 12 under the set display screen is obtained by the center area of the image sensing plate. The initial luminance data of the display panel 12 under the set display screen obtained by the center area of the image sensing plate is used as the reference luminance data. In this way, the area compensation value of the corresponding acquisition area 11 is determined according to the initial luminance data of the display panel 12 under the set display screen obtained by the acquisition area 11 and the initial luminance data of the display panel 12 under the set display screen obtained by the center area of the image sensing plate.

[0079] Step 230, compensating the corresponding acquisition area according to the area compensation value, so that the difference between the compensation basis data of the same display screen obtained by each acquisition area is less than or equal to a set threshold.

[0080] Specifically, after the area compensation value is determined, the acquisition area 11 is compensated according to the area compensation value corresponding to the acquisition area 11, so that the difference between the compensation basis data of the same display screen obtained by each acquisition area 11 is less than or equal to a set threshold, and the uniformity of the image sensing plate itself is ensured.

[0081] Step 240, simultaneously obtaining compensation basis data of different display panels by different acquisition areas of the image sensing plate; wherein the compensation basis data is used to determine the compensation data for luminance compensation of the display panel. This step is the same as step 120 in the above-mentioned embodiments, and will not be described here.

[0082] Optionally, the camera comprises a lens and an image sensing board, the lens converges light onto the image sensing board. The image sensing board can comprise a photosensitive device array, the photosensitive device array comprises a plurality of photosensitive devices, which can be photosensitive diodes. The lens can be a micro lens, the micro lens can comprise a micro lens corresponding to each photosensitive device.

[0083] Optionally, in the above embodiment, before step 110, and before step 210, the method further comprises: performing lens distortion compensation on the camera, so as to avoid the influence of lens distortion on the accuracy of the compensation basis data.

[0084] Figure 5 is a flowchart of another method for obtaining compensation basis data of a display panel provided by an embodiment of the present application, referring to Figure 5 The method for obtaining compensation basis data of the display panel comprises:

[0085] In step 310, the brightness data of the standard area light source at multiple points is obtained by the image sensing board, and the light measurement values of the multiple photosensitive devices included in the photosensitive device array of the image sensing board are obtained.

[0086] The standard area light source is an area light source with the same color and brightness of light emitted at each position. The image sensing board comprises a photosensitive device array, the photosensitive device array comprises a plurality of photosensitive devices, and each photosensitive device will measure a corresponding light measurement value when the brightness data of the standard area light source is obtained by the image sensing board. Due to many uncontrollable factors in the preparation process of the photosensitive device, as well as different aging degrees of the photosensitive device, the light measurement values of different photosensitive devices can be different.

[0087] In step 320, the light measurement value deviation of the photosensitive device corresponding to the light measurement value is determined according to the obtained light measurement value, and the corresponding photosensitive device is compensated according to the light measurement value deviation.

[0088] Optionally, the most common same light measurement value in the light measurement values measured by the multiple photosensitive devices is taken as the reference light measurement value, and the difference between the light measurement value of the photosensitive device and the reference light measurement value is determined as the light measurement deviation of the photosensitive device. Then, the photosensitive device is compensated according to the light measurement deviation, so that the light measurement values of each photosensitive device to the standard area light source are the same.

[0089] It should be noted that the determination of the reference light measurement value can also be other ways, for example, the average of the light measurement values measured by each photosensitive device is taken as the reference light measurement value, and other ways other than the above two ways can also be used, which are not limited in the present embodiment.

[0090] In step 330, multi-point brightness data of the display panel is acquired by the image sensing plate to obtain an actual picture corresponding to the display panel.

[0091] Figure 6 is a schematic diagram of an actual picture corresponding to a display panel provided by an embodiment of the present application, referring to Figure 6 , the actual picture corresponding to the specific display panel of the display panel for lens compensation includes a plurality of first straight lines L1 extending along a first direction x and a plurality of second straight lines L2 extending along a second direction y, the first direction x and the second direction y are perpendicular. Figure 7 is a schematic diagram of a distorted picture corresponding to a display panel acquired by a camera before lens distortion compensation, referring to Figure 7 When there is lens distortion, the distorted picture corresponding to the display panel acquired by the camera is inaccurate. In the distorted picture corresponding to the display panel acquired by the camera, the first straight line L1 and the second straight line L2 in the actual picture are curved. Figure 6 Wherein, each curve in the distorted picture includes a first curve S1 and a second curve S2, the first curve S1 corresponds to the first straight line L1 in the actual picture, and the second curve S2 corresponds to the second straight line L2 in the actual picture. Figure 6 Figure 6

[0092] In step 340, the bending degree of each curve in the distorted picture is determined according to the distorted picture corresponding to the display panel acquired by the camera, and the bending degree is converted into an angle value required by a trigonometric function.

[0093] In step 350, lens distortion compensation data corresponding to the angle value required by the trigonometric function is obtained, and the lens is compensated for distortion according to the lens distortion compensation data.

[0094] Specifically, according to the angle value required by the trigonometric function, any lens distortion compensation algorithm in the prior art is used to obtain the corresponding lens distortion compensation data and compensate the lens for distortion, thereby excluding the influence of lens distortion on the acquisition of compensation basis data.

[0095] Wherein, the above steps 330-350 are lens distortion compensation steps.

[0096] In step 360, the image sensing plate of the camera is compensated for uniformity, so that the difference between the compensation basis data of each acquisition area 11 of the image sensing plate is less than or equal to a set threshold. This step is the same as the above step 110, and will not be described here. ​​

[0097] Step 370, acquiring compensation basis data of different display panels simultaneously through different acquisition areas of the image sensing plate; wherein the compensation basis data is used to determine compensation data for brightness compensation of the display panel. This step is the same as the process of step 120 described above, and will not be repeated here.

[0098] As described in the above embodiment, the compensation basis data is brightness data, which can be used to determine voltage drop compensation data for voltage drop compensation of the display panel. Wherein the voltage drop compensation at least includes voltage drop compensation for the display panel displaying a full screen picture and voltage drop compensation for the display panel displaying a non-full screen picture. Wherein the voltage drop compensation for the display panel displaying a full screen picture is referred to as the first voltage drop compensation below, and the compensation basis data (i.e. brightness data) required for the first voltage drop compensation is referred to as the first voltage drop compensation required data, wherein the first voltage drop compensation required data can correspond to the data required for compensating the voltage drop generated by the signal line transmitting the signal when the display panel displays a full screen picture. The voltage drop compensation for the display panel displaying a non-full screen picture is referred to as the second voltage drop compensation below, and the compensation basis data (i.e. brightness data) required for the second voltage drop compensation is referred to as the second voltage drop compensation required data, wherein the second voltage drop compensation required data can correspond to the data required for compensating the voltage drop generated by the signal line transmitting the signal when the display panel displays a non-full screen picture.

[0099] Figure 8 is a flowchart of another method for acquiring compensation basis data of a display panel provided by an embodiment of the present application, Figure 9 is a schematic diagram of a process for acquiring compensation basis data provided by an embodiment of the present application, referring to Figure 8 and Figure 9 The method for acquiring compensation basis data of the display panel comprises:

[0100] Step 410, performing uniformity compensation on the image sensing plate of the camera, so that the difference between the compensation basis data acquired by each acquisition area of the image sensing plate is less than or equal to a set threshold value. This step is the same as the process of step 110 described above, and will not be repeated here.

[0101] Step 420, aligning the acquisition area with the corresponding display panel, wherein the display panel displays any first set picture.

[0102] Wherein, Figure 9The upper left corner corresponds to the action in step 420, showing the alignment of the acquisition area 11 with the corresponding display panel 12. The first setting screen is the display screen required to acquire the data needed for the first voltage drop compensation. When acquiring the data needed for the first voltage drop compensation, after aligning the acquisition area 11 with the corresponding display panel 12, brightness data from multiple first setting screens can be acquired to obtain the data needed for the first voltage drop compensation.

[0103] Step 430: Crop the placeholder area of ​​the display panel in the acquisition area.

[0104] For details, please refer to Figure 9 Step 430 includes: Step 431, cropping the acquisition area corresponding to the display panel;

[0105] Step 432: Crop the placeholder area of ​​the display panel in the acquisition area.

[0106] Figure 9 Taking the case of cropping only one acquisition area 11 as an example, this step can simultaneously crop the acquisition areas 11 corresponding to each display panel 12, and then crop the occupying area of ​​each display panel 12 within its corresponding acquisition area 11. In this step, it is necessary to ensure that the display panel 12 is within the acquisition range of its corresponding acquisition area 11; this occupying area is the area occupied by the display panel 12 within the acquisition range of the acquisition area 11. (Reference) Figure 9 The area of ​​the occupancy region can be smaller than the area of ​​the acquisition region 11.

[0107] Step 440: Divide the placeholder area into multiple sub-areas.

[0108] Figure 9 The lower right corner of the diagram illustrates how the placeholder area is divided into multiple sub-regions 13. (See reference) Figure 9 The placeholder area can be divided into p*q sub-regions, where p is greater than or equal to 2 and q is greater than or equal to 2. Figure 9 The diagram illustrates the case where the area to be occupied is divided into 4*5 sub-areas.

[0109] Step 450: Obtain the brightness data of multiple sub-pixels at the intersection of at least two sub-regions, and calculate the average value of the brightness data to obtain at least part of the data required for the first voltage drop compensation.

[0110] Optionally, obtain the intersection points of at least two sub-regions 13 (corresponding to...). Figure 9 The brightness data of n*n sub-pixels within the selected area (14) where the intersection points are located, where n is greater than or equal to 2. (Reference) Figure 9, the four sub-regions 13 have an intersection position, and the placeholder region includes twelve intersection positions in total, and correspondingly, the brightness data of n*n sub-pixels at each of the twelve intersection positions can be acquired respectively, and the average brightness data of n*n sub-pixels at each of the twelve intersection positions can be calculated respectively, so as to obtain the data required for at least partial first voltage drop compensation.

[0111] Figure 10 is a flowchart of another method for acquiring compensation basis data of a display panel provided by an embodiment of the present application, Figure 11 is a schematic diagram of the acquisition process of compensation basis data, and reference is made to Figure 10 and Figure 11 The method for acquiring compensation basis data of the display panel comprises the following steps.

[0112] In step 510, the uniformity compensation is performed on the image sensing plate of the camera, so that the difference between the compensation basis data acquired by each acquisition region 11 of the image sensing plate is less than or equal to a set threshold. This step is the same as the process of step 110 described above, and will not be described here again.

[0113] In step 520, the acquisition region is aligned with the corresponding display panel, and the display panel 12 displays an arbitrary second set picture.

[0114] Specifically, in this step, each acquisition region is aligned with the corresponding display panel. In this step, Figure 11 The upper left corner of the display panel in the above figure corresponds to the action of step 520, and shows the situation after the acquisition region 11 is aligned with the corresponding display panel 12. The second set picture is a display picture required for acquiring the data required for second voltage drop compensation. When acquiring the data required for second voltage drop compensation, after the acquisition region is aligned with the corresponding display panel, the brightness data of multiple second set pictures can be acquired to obtain the data required for second voltage drop compensation.

[0115] In step 530, the display panel is cropped in the placeholder region of the acquisition region.

[0116] Specifically, please refer to Figure 11 This step 530 comprises the following steps.

[0117] In step 531, the acquisition region of the display panel is cropped.

[0118] In step 532, the placeholder region of the display panel in the acquisition region is cropped in the acquisition region.

[0119] In this step, the acquisition region corresponding to each display panel can be cropped at the same time, and then the placeholder region of each display panel in the corresponding acquisition region can be cropped.

[0120] Step 540, the brightness data of the plurality of sub-pixels in the central region of the display panel is acquired, and the mean value of the brightness data is calculated to obtain data required for at least partial second voltage drop compensation.

[0121] Figure 11 The part shown in the lower right corner can correspond to the brightness data of the plurality of sub-pixels in the central region 15 of the display panel acquired in step 540. Optionally, the brightness data of n*n sub-pixels in the central region 15 of the display panel is acquired, where n is greater than or equal to 2.

[0122] It should be noted that in the above embodiments of the present application, the compensation basis data of different display panels is acquired through different acquisition regions, and accordingly, when the acquired compensation basis data is processed, parallel partition processing can also be performed to improve efficiency.

[0123] It should be further noted that the methods in the above embodiments can be combined. For example, in the above Figure 8 and Figure 10 In the corresponding embodiments, because the uniformity compensation of the image sensing panel has been performed in step 410, the alignment step has been performed in step 420, and the cropping step of the placeholder region has been performed in step 430, the corresponding action of step 540 can be directly performed after the corresponding actions of step 410-step 450 (i.e., the acquisition of data required for first voltage drop compensation). For details, see Figure 12 , Figure 12 is a flowchart of another display panel compensation basis data acquisition method provided by the embodiments of the present application. Referring to Figure 12 , the display panel compensation basis data acquisition method specifically includes:

[0124] Step 610, performing uniformity compensation on the image sensing panel of the camera, so that the difference between the compensation basis data acquired by each acquisition region divided by the image sensing panel is less than or equal to a set threshold.

[0125] Step 620, aligning the acquisition region with the corresponding display panel, wherein the display panel displays any first set picture.

[0126] Step 630, cropping the placeholder region of the display panel in the acquisition region.

[0127] Step 640, dividing the placeholder region into a plurality of sub-regions.

[0128] Step 650, acquiring the brightness data of the plurality of sub-pixels at the intersection of the at least two sub-regions, and calculating the mean value of the brightness data to obtain data required for at least partial first voltage drop compensation.

[0129] Step 660, obtaining the luminance data of the plurality of sub-pixels in the central region of the display panel, and calculating the average of the luminance data to obtain data required for at least partial second voltage drop compensation.

[0130] The method for obtaining compensation basis data of the display panel of the embodiment combines the common steps of the obtaining processes of the data required for the first voltage drop compensation and the data required for the second voltage drop compensation, and further simplifies the obtaining process of the method for obtaining compensation basis data of the display panel, so that the efficiency of obtaining the compensation basis data of the display panel is further improved.

[0131] On the basis of the above-mentioned embodiments, optionally, the areas of the display panels corresponding to different obtaining regions are different; and / or the areas of different obtaining regions are different.

[0132] Specifically, when compensation basis data of display images of display panels with different areas needs to be obtained, the image sensing plate can be divided into obtaining regions with different areas, so that the areas of the obtaining regions match the areas of the display panels, and the accuracy of obtaining the compensation basis data is improved.

[0133] The embodiment of the application further provides a display panel compensation basis data acquisition device, Figure 13 is a structural schematic diagram of a display panel compensation basis data acquisition device provided by the embodiment of the application, and reference is made to Figure 13 The display panel compensation basis data acquisition device comprises:

[0134] A compensation module 710 is configured to perform uniformity compensation on the image sensing plate of the camera, so that the compensation basis data of the same display image obtained by each obtaining region of the image sensing plate has a difference less than or equal to a set threshold; wherein the image sensing plate is divided into at least two obtaining regions.

[0135] An obtaining module 720 is configured to simultaneously obtain compensation basis data of different display panels through different obtaining regions of the image sensing plate; wherein the compensation basis data is used to determine compensation data for brightness compensation of the display panel.

[0136] The display panel compensation basis data acquisition device is used to execute the method for obtaining compensation basis data of the display panel of any of the above-mentioned embodiments of the application, and has the beneficial effects of the method for obtaining compensation basis data of the display panel of any of the above-mentioned embodiments of the application, which will not be repeated here.

[0137] The embodiment of the application further provides a display panel compensation basis data acquisition system, Figure 14is a structural schematic diagram of a display panel compensation basis data acquisition system provided by an embodiment of the present application, referring to Figure 14 The display panel compensation basis data acquisition system comprises a camera 20 and a plurality of display panels 12, and the camera 20 is used to acquire compensation basis data of the display panels 12 by using the display panel compensation basis data acquisition method of any of the above embodiments of the present application.

[0138] The display panel compensation basis data acquisition system of the present embodiment acquires compensation basis data of a plurality of display panels by using one camera, thereby improving the overall shooting efficiency, and improving the production efficiency of the display panels, and reducing the number of cameras used for acquiring compensation basis data in batch production of the display panels, and reducing the cost of hardware equipment. Since the camera and the camera-related jig need to occupy a certain space, the display panel compensation basis data acquisition system of the present embodiment also occupies a smaller space. In addition, in the prior art, a camera is used to shoot one display panel, and the camera is easy to shoot the display panel shot by other cameras, so that the cameras affect each other when acquiring compensation basis data. The display panel compensation basis data acquisition system of the present embodiment acquires compensation basis data of a plurality of display panels by using one camera, which is conducive to reducing the mutual influence of the cameras when acquiring compensation basis data, and further improving the accuracy of acquiring compensation basis data.

[0139] The present embodiment further provides a storage medium having a computer program stored thereon, and the program is executed by a processor in the camera to realize the display panel compensation basis data acquisition method of any of the above embodiments of the present application.

[0140] Note that the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A method for acquiring compensation basis data of a display panel, characterized by, The method comprises the following steps: Uniformity compensation is performed on an image sensing panel of a camera, so that the difference between compensation basis data acquired by each acquisition area of the image sensing panel for the same display screen is less than or equal to a set threshold; wherein the image sensing panel comprises at least two acquisition areas; when the camera takes a picture, compensation basis data of a display screen is acquired through the image sensing panel, and the compensation basis data is luminance data; The compensation basis data is used to determine compensation data for luminance compensation of the display panel.

2. The method of acquiring compensation basis data of a display panel according to claim 1, characterized in that, The uniformity compensation performed on the image sensing panel of the camera, so that the difference between compensation basis data acquired by each acquisition area of the image sensing panel for the same display screen is less than or equal to a set threshold, comprises: Initial luminance data of a display panel under a set display screen is acquired through each acquisition area respectively; According to the corresponding initial luminance data and reference luminance data of the display panel under the set display screen acquired by the acquisition area, a regional compensation value corresponding to the acquisition area is determined; According to the regional compensation value, the corresponding acquisition area is compensated, so that the difference between compensation basis data acquired by each acquisition area for the same display screen is less than or equal to a set threshold.

3. The method for obtaining compensation base data of the display panel according to claim 2, characterized in that, The set display screen is a white screen.

4. The method for obtaining compensation base data of the display panel according to claim 2, characterized in that, The initial luminance data of the display panel under the set display screen is acquired through each acquisition area respectively, comprising: The acquisition area is aligned with the display panel, so that the center of the acquisition area coincides with the center of the display panel; The luminance data of a plurality of sub-pixels in the central area of the display panel is acquired through the acquisition area, and the average value of the luminance data of the plurality of sub-pixels is taken as the initial luminance data corresponding to the acquisition area.

5. The method for obtaining compensation base data of the display panel according to claim 2, characterized in that, Before the regional compensation value corresponding to the acquisition area is determined according to the corresponding initial luminance data and reference luminance data of the display panel under the set display screen acquired by the acquisition area, the method further comprises: The corresponding initial luminance data of the display panel under the set display screen acquired by one of the acquisition areas included in the image sensing panel is taken as the reference luminance data; or The center of the display panel is aligned with the center of the image sensing panel, and the initial luminance data of the display panel under the set display screen is acquired through the central area of the image sensing panel, and the initial luminance data of the display panel under the set display screen acquired by the central area of the image sensing panel is taken as the reference luminance data.

6. The method of acquiring compensation basis data of a display panel according to claim 1, wherein, The camera comprises a lens, and before the uniformity compensation is performed on the image sensing panel of the camera, so that the difference between compensation basis data acquired by each area of the image sensing panel for the same display screen is less than or equal to a set threshold, the method further comprises: Lens distortion compensation is performed on the camera.

7. The method of acquiring compensation basis data of a display panel according to claim 6, wherein, The image sensing panel comprises an array of light sensing devices; Before the lens distortion compensation is performed on the camera, the method further comprises: The image sensing panel obtains the brightness of the standard surface light source multi-point, and obtains the light measurement values of the plurality of light sensing devices included in the light sensing device array of the image sensing panel; According to the light measurement values, the light measurement value deviation of the light sensing device is determined, and the light sensing device is compensated according to the light measurement value deviation. 8.The method of claim 5, wherein, The lens distortion compensation of the camera includes: The image sensing panel obtains the multi-point brightness data of the display panel display picture to obtain the actual picture corresponding to the display picture of the display panel; wherein the actual picture corresponding to the display picture includes a plurality of first straight lines extending along a first direction and a plurality of second straight lines extending along a second direction, and the first direction and the second direction are perpendicular; According to the distortion picture of the display panel obtained by the camera, the bending degree of each curve in the distortion picture is determined, and the bending degree is converted into an angle value required by a trigonometric function; According to the angle value required by the trigonometric function, the corresponding distortion compensation data is obtained, and the lens distortion compensation is performed according to the distortion compensation data. 9.The method of claim 1, wherein The compensation basis data includes first voltage drop compensation required data; the compensation basis data acquisition of different display panels by different acquisition areas of the image sensing panel includes: Aligning the acquisition area with the corresponding display panel, wherein the display panel displays any first set picture; Cutting the corresponding occupation area of the display panel in the acquisition area; Divide the occupation area into a plurality of sub-areas; Obtain the brightness data of a plurality of sub-pixels at the intersection of at least two sub-areas, and calculate the average brightness data to obtain at least part of the first voltage drop compensation required data. 10.The method of claim 1, wherein, The compensation basis data includes second voltage drop compensation required data, and the compensation basis data acquisition of different display panels by different acquisition areas of the image sensing panel includes: Aligning the acquisition area with the corresponding display panel, wherein the display panel displays any second set picture; Cutting the corresponding occupation area of the display panel in the acquisition area; Obtain the brightness data of a plurality of sub-pixels at the intersection of at least two sub-areas, and calculate the average brightness data to obtain at least part of the first voltage drop compensation required data.

11. The method of acquiring compensation basis data of a display panel according to claim 1, wherein, The areas of the display panels corresponding to different acquisition areas are different; and / or the areas of different acquisition areas are different.

12. An acquisition apparatus of compensation basis data of a display panel, characterized by, It includes: The compensation module is used for uniformity compensation of the image sensing panel of the camera, so that the compensation basis data difference of each acquisition area divided by the image sensing panel is less than or equal to a set threshold when the same display picture is acquired; wherein the image sensing panel includes at least two acquisition areas; when the camera takes a picture, the compensation basis data of the display picture is obtained by the image sensing panel, and the compensation basis data is the brightness data; An acquisition module is configured to acquire compensation basis data of different display panels simultaneously through different acquisition areas of the image sensing panel, wherein the compensation basis data is used to determine compensation data for brightness compensation of the display panels.

13. An acquisition system of compensation basis data of a display panel, characterized by, A camera and a plurality of display panels are provided, and the camera is configured to acquire compensation basis data of the plurality of display panels by using the acquisition method of the compensation basis data of the display panel according to any one of claims 1-11.

14. A storage medium, characterized by A computer program is stored on a computer readable medium, wherein the program is executed by a processor in a camera to implement the method according to any one of claims 1-11.

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