Optical compensation device and method of display panel

Abstract

The invention discloses an optical compensation device and method of a display panel. The optical compensation device of the display panel comprises a bearing platform used for bearing the display panel; the first measuring unit is used for acquiring first brightness data when the display panel displays a preset picture under a positive visual angle; the second measuring unit is used for acquiring image data when the display panel displays a preset picture under the positive visual angle; the first data processing unit is connected with the first measuring unit and used for receiving the first brightness data, generating first brightness compensation data according to the first brightness data and performing brightness compensation; the second data processing unit is connected with the second measuring unit and is used for receiving the image data, generating pixel-level brightness compensation data according to the image data and performing pixel brightness compensation; wherein the first measuring unit and the second measuring unit are started to work at the same time, so that the brightness of the whole surface of the display panel and the brightness among the pixels are compensated at the same time, the optical compensation time is shortened, and the compensation cost is saved.

Description

Technical Field

[0001] The present invention relates to the field of display panel detection technology, and in particular to an optical compensation device and method for a display panel. Background Art

[0002] Due to various reasons in the manufacturing process, each display panel may have different optical characteristics. Therefore, even when the same voltage or current is applied to multiple display panels of the same model, the brightness of the image realized for each display panel may vary, seriously affecting the display uniformity. To solve this problem, it is urgent to provide an optical compensation device to compensate for the optical deviation of the display panel. Summary of the invention

[0003] The present invention provides an optical compensation device and method for a display panel, so as to improve the accuracy of brightness compensation and reduce the optical compensation time.

[0004] According to one aspect of the present invention, there is provided an optical compensation device for a display panel, comprising:

[0005] A carrying platform, used for carrying a display panel;

[0006] A first measuring unit, located at a light-emitting side of the display panel, is used to obtain first brightness data when the display panel displays a preset picture at a normal viewing angle;

[0007] A second measuring unit, located at the light-emitting side of the display panel, is used to obtain image data when the display panel displays a preset picture at a normal viewing angle;

[0008] a first data processing unit connected to the first measuring unit, configured to receive the first brightness data, and generate first brightness compensation data according to the first brightness data to perform brightness compensation;

[0009] a second data processing unit connected to the second measuring unit, configured to receive the image data, generate pixel-level brightness compensation data according to the image data, and perform pixel brightness compensation;

[0010] The first measuring unit and the second measuring unit start working at the same time.

[0011] Optionally, the preset picture includes a first preset picture, the first preset picture includes a first light-emitting area and a plurality of second light-emitting areas, the first light-emitting area includes a plurality of hole areas that are spaced apart and arranged in an array, and the second light-emitting area fills the hole areas;

[0012] The first measuring unit acquires first brightness data of each of the second light-emitting areas at a normal viewing angle;

[0013] The second measuring unit acquires image data of the first light-emitting area at a normal viewing angle, wherein the display images of the first light-emitting area and the second light-emitting area are different.

[0014] Optionally, the second measuring unit further acquires sub-image data of the second light-emitting area at a normal viewing angle, wherein a display screen of the second light-emitting area is the same as that of the first light-emitting area.

[0015] Optionally, the preset screen includes a second preset screen and a third preset screen displayed in partitions.

[0016] The second preset image includes a plurality of third light-emitting areas which are spaced apart and arranged in an array;

[0017] The third preset picture includes a fourth light-emitting area arranged on the entire surface;

[0018] The first measuring unit is used to obtain first brightness data of each of the third light-emitting areas at a normal viewing angle;

[0019] The second measuring unit is used to obtain image data of the fourth light-emitting area at a normal viewing angle.

[0020] Optionally, a third measuring unit is further included, connected to the second data processing unit, located at the light emitting side of the display panel, and used to obtain second brightness data when the display panel displays a preset picture at a preset viewing angle;

[0021] The second data processing unit is further used to receive the second brightness data, and generate second brightness compensation data according to the second brightness data to perform brightness compensation;

[0022] The preset viewing angle is the angle between the central axis of the third measuring subunit and the plane where the display panel is located.

[0023] Optionally, the preset viewing angle is θ, where 0°≤θ≤90°.

[0024] Optionally, along a direction perpendicular to light emission of the display panel, a projection of the first measuring unit is located in a central area of ​​the display panel, and the first measuring unit and the second measuring unit are arranged adjacent to each other.

[0025] According to another aspect of the present invention, there is provided an optical compensation method for a display panel, which is applied to an optical compensation device for a display panel according to any one of the above aspects, comprising:

[0026] After the display panel is transferred to the carrying platform, controlling the display panel to display a preset picture;

[0027] When controlling the display panel to display a preset picture, starting the first measuring unit and the second measuring unit;

[0028] After the first measuring unit and the second measuring unit are started, the first data processing unit obtains first brightness data of the preset picture at a normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation;

[0029] The second data processing unit obtains the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation.

[0030] Optionally, the first brightness data includes first sub-brightness data; the first brightness compensation data includes first sub-brightness compensation data; the image data includes first sub-image data; the pixel-level brightness compensation data includes first pixel-level brightness compensation data;

[0031] The first data processing unit acquires the first brightness data of the preset picture at the normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation; including:

[0032] The first data processing unit acquires the first brightness data of each second light-emitting area at a normal viewing angle output by the first measuring unit;

[0033] Obtaining a first preset brightness value;

[0034] Generate first sub-brightness compensation data according to the first preset brightness value and the first brightness data to perform brightness compensation;

[0035] The second data processing unit acquires the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation, including:

[0036] The second measuring unit acquires the first sub-image data of the first light-emitting area at the normal viewing angle output by the second measuring unit, wherein the display images of the first light-emitting area and the second light-emitting area are different;

[0037] Acquire a first brightness difference between adjacent pixels in the first light-emitting area according to the first sub-image data;

[0038] Obtaining a first preset pixel brightness value;

[0039] First sub-pixel level brightness compensation data is generated according to the first brightness difference value and the first preset pixel brightness value to perform pixel brightness compensation.

[0040] Optionally, the first brightness data further includes second sub-brightness data; the first brightness compensation data further includes second sub-brightness compensation data; the image data further includes second sub-image data; the pixel-level brightness compensation data further includes second pixel-level brightness compensation data;

[0041] The first data processing unit acquires the first brightness data of the preset picture at the normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation; including:

[0042] The first data processing unit acquires the first brightness data of each third light-emitting area at a normal viewing angle output by the first measuring unit;

[0043] Obtaining a second preset brightness value;

[0044] Generate second sub-brightness compensation data according to the second preset brightness value and the first brightness data to perform brightness compensation;

[0045] The second data processing unit acquires the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation, including:

[0046] A second data processing unit acquires second sub-image data of the fourth light-emitting area at a normal viewing angle output by the second measuring unit;

[0047] Acquire a second brightness difference between adjacent pixels in the fourth light emitting area according to the second sub-image data;

[0048] Obtaining a second preset pixel brightness value;

[0049] Second sub-pixel level brightness compensation data is generated according to the second brightness difference value and the second preset pixel brightness value to perform pixel brightness compensation.

[0050] The technical solution of the embodiment of the present invention provides an optical compensation device for a display panel, comprising: a carrying platform for carrying the display panel; a first measuring unit located at the light-exiting side of the display panel, for obtaining first brightness data when the display panel displays a preset picture at a normal viewing angle; a second measuring unit located at the light-exiting side of the display panel, for obtaining image data when the display panel displays a preset picture at a normal viewing angle; a first data processing unit connected to the first measuring unit, for receiving the first brightness data, and generating first brightness compensation data according to the first brightness data to perform brightness compensation; a second data processing unit connected to the second measuring unit, for receiving image data, and generating pixel-level brightness compensation data according to the image data to perform pixel brightness compensation; wherein the first measuring unit and the second measuring unit start working at the same time, so that the entire surface brightness of the display panel and the brightness between each pixel are compensated at the same time, thereby reducing the optical compensation time and saving the compensation cost.

[0051] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0053] Figure 1 A schematic structural diagram of an optical compensation device for a display panel provided by an embodiment of the present invention;

[0054] Figure 2 A schematic diagram of a top view of an optical compensation device for a display panel provided by an embodiment of the present invention;

[0055] Figure 3 A schematic diagram of a preset screen of a display panel provided by an embodiment of the present invention;

[0056] Figure 4 A schematic diagram of another preset screen of a display panel provided by an embodiment of the present invention;

[0057] Figure 5 A schematic diagram of another preset screen of a display panel provided by an embodiment of the present invention;

[0058] Figure 6 A schematic diagram of another preset screen of a display panel provided by an embodiment of the present invention;

[0059] Figure 7 A flow chart of an optical compensation method for a display panel provided by an embodiment of the present invention;

[0060] Figure 8 A flow chart of another optical compensation method for a display panel provided by an embodiment of the present invention;

[0061] Fig. 9 A flow chart of another optical compensation method for a display panel provided by an embodiment of the present invention;

[0062] Fig.10 A flow chart of another optical compensation method for a display panel provided by an embodiment of the present invention;

[0063] Fig.11 A flow chart of another optical compensation method for a display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0065] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] Figure 1 A schematic structural diagram of an optical compensation device for a display panel provided by an embodiment of the present invention, Figure 2 A schematic top view of an optical compensation device for a display panel provided by an embodiment of the present invention is shown in FIG. Figure 3 A schematic diagram of a preset screen of a display panel provided by an embodiment of the present invention, Figure 4 A schematic diagram of another preset screen of a display panel provided by an embodiment of the present invention is shown as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the optical compensation device 100 of the display panel includes: a carrying platform 101, used for carrying the display panel 102; a first measuring unit 103, located at the light-exiting side of the display panel 102, used for obtaining first brightness data when the display panel 102 displays a preset picture 10 at a normal viewing angle; a second measuring unit 104, located at the light-exiting side of the display panel 102, used for obtaining image data when the display panel 102 displays the preset picture 10 at a normal viewing angle; a first data processing unit 105, connected to the first measuring unit 103, used for receiving the first brightness data, and generating first brightness compensation data according to the first brightness data, and performing brightness compensation; a second data processing unit 106, connected to the second measuring unit 104, used for receiving the image data, and generating pixel-level brightness compensation data according to the image data, and performing pixel brightness compensation; wherein the first measuring unit 103 and the second measuring unit 104 start working at the same time.

[0067] The carrying platform 101 is used to carry the display panel 102 to be tested. Before the first measuring unit 103 and the second measuring unit 104 are started, the display panel 102 needs to be lit to display the preset picture 10. The first measuring unit 103 and the second measuring unit 104 are integrated in the brightness compensation device 100 of the display panel at the same time, saving regional space. The first measuring unit 103 and the second measuring unit 104 work at the same time, effectively reducing the optical compensation time and improving production efficiency. The preset pictures 10 corresponding to the first measuring unit 103 and the second measuring unit 104 can be the same, corresponding to the same grayscale, and optical compensation is performed under the same preset picture 10; or Figure 4 As shown, the preset pictures corresponding to the first measuring unit 103 and the second measuring unit 104 can be different, corresponding to different grayscales, and the current preset picture of the display panel 102 can be switched to other preset pictures, so that the first measuring unit 103 and the second measuring unit 104 perform optical compensation respectively under different preset pictures.

[0068] The first measuring unit 103 is arranged in the vertical light emitting direction of the display panel 102. The first measuring unit 103 may include a brightness meter. The first measuring unit 103 obtains the first brightness data when the display panel 102 displays the preset picture 10 at a normal viewing angle. Usually, the preset picture 10 is provided with a high brightness display area and a low brightness display area. The high brightness display area can be arranged in an array on the entire surface. The number of settings can be selected according to actual design requirements, and the embodiment of the present invention does not specifically limit it. The more the number of high brightness display areas is set, the more accurate the brightness measurement is. The first measuring unit 103 obtains the brightness of the high brightness display area, and then obtains the first brightness data reflecting the brightness of the display panel 102. The first measuring unit 103 is connected to the first data processing unit 105. The first data processing unit 105 receives the first brightness data. Since the preset brightness value of the current preset picture 10 is stored in the first data processing unit 105, the first brightness data is compared with the preset brightness value, and the brightness of the current display panel 102 is judged to be too high or too low, so as to generate the first brightness compensation data accordingly, balance the brightness of the display panel 102, and complete the compensation. The second measuring unit 104 is also arranged in the vertical light emitting direction of the display panel 102. The second measuring unit 104 may include at least one of a CCD camera, an HDR camera, an industrial camera, etc. The second measuring unit 104 obtains image data when the display panel 102 displays the preset picture 10 at a positive viewing angle, that is, obtains the image of the current preset picture 10. The pixel value of the second measuring unit 104 is not the pixel data written into the pixel of the display panel 102, but the digital value output from the pixel of the image sensor of the second measuring unit 104. Therefore, the second measuring unit 104 is connected to the second data processing unit 106. The second data processing unit 106 receives the image data and performs image data analysis to obtain the brightness deviation between adjacent pixels in the image, and correspondingly obtains the grayscale deviation between adjacent pixels in the display panel 102, and then generates pixel-level brightness compensation data to perform pixel brightness compensation on the display panel 102, so as to ensure that the picture with uneven brightness in the display panel 102 is accurately compensated, thereby improving the overall display uniformity of the display panel 102.

[0069] In the embodiment of the present invention, a first measuring unit, a second measuring unit, a first data processing unit and a second data processing unit are simultaneously arranged in an optical compensation device of a display panel, wherein the first measuring unit obtains first brightness data when the display panel displays a preset picture at a normal viewing angle; the second measuring unit obtains image data when the display panel displays a preset picture at a normal viewing angle; the first data processing unit is connected to the first measuring unit and is used to receive the first brightness data, and generate first brightness compensation data according to the first brightness data to perform brightness compensation; the second data processing unit is connected to the second measuring unit and is used to receive image data, and generate pixel-level brightness compensation data according to the image data to perform pixel brightness compensation, thereby achieving compensation for the entire surface brightness of the display panel and the brightness between each pixel at the same time, reducing the optical compensation time and saving the compensation cost.

[0070] Optional, continue to refer to Figure 3 The preset screen 10 includes a first preset screen 11, the first preset screen 11 includes a first light-emitting area 111 and a plurality of second light-emitting areas 112, the first light-emitting area 111 includes a plurality of hole areas 1111 that are spaced apart and arranged in an array, and the second light-emitting area 112 fills the hole areas 1111; the first measuring unit 103 obtains the first brightness data of each second light-emitting area 112 at a normal viewing angle; the second measuring unit 104 obtains the image data of the first light-emitting area 111 at a normal viewing angle, wherein; the display screens of the first light-emitting area 111 and the second light-emitting area 112 are different.

[0071] Among them, the first measurement unit 103 and the second measurement unit 104 can simultaneously perform brightness compensation on the same display screen of the display panel 102. When the preset screen 10 includes the first preset screen 11, the first preset screen 11 is composed of a first light-emitting area 111 and a plurality of second light-emitting areas 112. The first light-emitting area 111 includes a plurality of hole-punching areas 1111 arranged at intervals and in an array, and the second light-emitting area 112 fills the hole-punching area 1111, that is, the second light-emitting areas 112 are arranged at intervals and in an array. The more the number of second light-emitting areas 112 is set, the higher the accuracy of the subsequent overall brightness compensation. The shape of the second light-emitting area 112 is determined by the shape of the hole-punching area, and can be a circular, rectangular, square, etc. The specific shape is not specifically limited in the embodiments of the present invention. In the embodiments of the present invention, the second light-emitting area 112 is shown as a circular shape. When the display panel 102 displays the first preset picture 11, the first measuring unit 103 and the second measuring unit 104 are started at the same time, and the first measuring unit 103 only obtains the first brightness data of each second light-emitting area 112, and the first brightness data can be the average brightness of each second light-emitting area 112 to reflect the overall brightness of the display panel 102, and then the first data processing unit 105 can perform brightness compensation according to the first brightness data and the preset brightness data preset in advance to adjust the overall brightness of the display panel 102; since the display images of the first light-emitting area 111 and the second light-emitting area 112 are different, the light-emitting brightness of the second light-emitting area 112 is usually higher than the light-emitting brightness of the first light-emitting area 111, the light-emitting color of the first light-emitting area 111 can be white, and the light-emitting color of the second light-emitting area 112 can include black, white, red, green and blue. When the display panel 102 displays the first preset picture 11, the second measurement unit 104 only obtains the image data of the first light-emitting area 111, and the second data processing unit 106 identifies the brightness between adjacent pixels according to the image data, and then obtains the corresponding pixel-level brightness compensation data, thereby ensuring the overall display uniformity of the display panel 102.

[0072] Optional, continue to refer to Figure 3 The second measuring unit 104 also obtains sub-image data of the second light-emitting area 112 at a normal viewing angle, wherein the display screen of the second light-emitting area 112 is the same as that of the first light-emitting area 111.

[0073] Among them, in order to ensure the optical compensation effect of the second data processing unit 106 on the display panel, the first brightness data of the second light-emitting area 112 can be obtained by the first measuring unit 103, and after the second measuring unit 104 obtains the image data of the first light-emitting area 111, the display picture of the second light-emitting area 112 can be adjusted to be the same as the display picture of the first light-emitting area 111, so that the second measuring unit 104 only obtains the sub-image data of the second light-emitting area 112 at a normal viewing angle. The second data processing unit 106 can combine the image data and the sub-image data to more accurately obtain the pixel-level brightness compensation data, perform pixel brightness compensation on the display panel 102, ensure that the picture with uneven brightness in the display panel 102 is accurately compensated, and improve the overall display uniformity of the display panel 102.

[0074] Optionally, after the first measuring unit 103 obtains the first brightness data of the second light-emitting area 112 and the second measuring unit 104 obtains the image data of the first light-emitting area 111, the image of the first light-emitting area 111 and the image of the second light-emitting area 112 can be displayed interchangeably, so that the first measuring unit 103 and the second measuring unit 104 can respectively detect all areas of the panel, thereby improving the uniformity of the overall detection and display of the display panel 102.

[0075] Optional, Figure 5 A schematic diagram of another preset screen of a display panel provided by an embodiment of the present invention, Figure 6 A schematic diagram of another preset screen of a display panel provided by an embodiment of the present invention is shown as follows: Figure 4 , Figure 5 and Figure 6 As shown, the preset screen 10 includes a second preset screen 12 and a third preset screen 13 displayed in partitions, the second preset screen 12 includes a plurality of third light-emitting areas 121 arranged at intervals and in an array; the third preset screen 13 includes a fourth light-emitting area 131 arranged on the entire surface; the first measuring unit 103 is used to obtain the first brightness data of each third light-emitting area 121 at a normal viewing angle; the second measuring unit 104 is used to obtain the image data of the fourth light-emitting area 131 at a normal viewing angle.

[0076] The display panel 102 can realize split-screen display, and the split-screen display can be as follows: Figure 4 As shown, it is displayed on the left and right. Figure 5 As shown in the up and down display or as Figure 6As shown, a multi-grid display is provided, so that the display panel 102 can simultaneously display the second preset picture 12 and the third preset picture 13. The second preset picture 12 may include a plurality of third light-emitting areas 121 that are spaced apart and arranged in an array, so that the first measuring unit 103 can obtain the first brightness data of each third light-emitting area 121, and then the first data processing unit 105 performs brightness compensation on the display panel 102; the third preset picture 13 includes a fourth light-emitting area 131 provided on the front, so that the second measuring unit 104 can obtain the image data of the fourth light-emitting area 131 displayed on the entire surface, and then the second data processing unit 106 extracts the brightness between adjacent pixels according to the image data to obtain pixel-level brightness compensation data. During the compensation process, the second preset picture 12 can also be adjusted to provide compensation to achieve the overall display effect of the display panel 102.

[0077] The display panel 102 can also switch the display screen, so that the second preset screen 12 and the third preset screen 13 can be changed to different positions, thereby realizing overall brightness compensation and pixel-level brightness compensation of the display panel 102 under different preset screens, reducing the brightness compensation time, and ensuring the display uniformity of the display panel 102.

[0078] Optional, continue to refer to Figure 1 , also includes a third measuring unit 107, which is connected to the second data processing unit 106 and is located on the light-emitting side of the display panel 102, and is used to obtain second brightness data when the display panel 102 displays a preset picture 10 at a preset viewing angle; the second data processing unit 106 is also used to receive the second brightness data, and generate second brightness compensation data according to the second brightness data to perform brightness compensation; wherein the preset viewing angle is the angle between the central axis of the third measuring unit 107 and the plane where the display panel 102 is located.

[0079] Among them, the third measuring unit 107 may include a brightness meter, and the third measuring unit 107 can obtain the second brightness data of the preset picture of the display panel 102 at a wide viewing angle. The third measuring unit 107 is connected to the second data processing unit 106, so that the second data processing unit 106 can obtain the second brightness compensation data according to the second brightness data, so as to compensate for the uneven brightness of the display panel 102 at a wide viewing angle and ensure the overall display uniformity of the display panel 102.

[0080] Optional, continue to refer to Figure 1 , the preset viewing angle is θ, where 0°≤θ≤90°.

[0081] Among them, the third measuring unit 107 can adjust the preset viewing angle according to actual design requirements. By reasonably setting the angle between the third measuring unit 107 and the display panel 102, the third measuring unit 107 can collect the second brightness data of the preset picture of the display panel 102 at a large viewing angle, and perform corresponding compensation, and cooperate with the first measuring unit 103 to collect the first brightness data of the display panel 102 at a positive viewing angle, so as to ensure that the display panel 102 can be accurately compensated at different viewing angles, thereby ensuring the display effect of the display panel 102.

[0082] Optional, such as Figure 1 and Figure 2 As shown, along the vertical light emitting direction X of the display panel 102 , the projection of the first measuring unit 103 is located in the central area 108 of the display panel 102 , and the first measuring unit 103 and the second measuring unit 104 are arranged adjacent to each other.

[0083] The first measuring unit 103 collects the overall brightness of the display panel 102, so along the vertical light emitting direction X of the display panel 102, the projection of the first measuring unit 103 is located in the central area of ​​the display panel 102, so that the first measuring unit 103 can fully acquire the brightness of the preset picture of the display panel 102, thereby ensuring that the brightness is uniform everywhere in the subsequent display panel 102. The first measuring unit 103 and the second measuring unit 104 are arranged adjacent to each other, that is, the first measuring unit 103 and the second measuring unit 104 can be located in the same plane, and the two are arranged side by side, so that the second measuring unit 104 is arranged close to the central area 108 of the display panel 102, ensuring that the second measuring unit 104 can capture the preset picture of the display panel 102, thereby ensuring the accuracy of subsequent optical compensation.

[0084] Figure 7 A flow chart of an optical compensation method for a display panel provided by an embodiment of the present invention, such as Figure 7 As shown, the optical compensation device applied to the display panel in any one of the above embodiments comprises:

[0085] S101, after the display panel is transferred to the carrying platform, controlling the display panel to display a preset picture.

[0086] The display panel to be tested is placed on the carrying platform, and the display panel is lit up at the same time, so that the display panel displays a preset picture, which facilitates the subsequent normal operation of the first measuring unit and the second measuring unit.

[0087] S102, when controlling the display panel to display a preset picture, starting the first measuring unit and the second measuring unit.

[0088] After the display panel displays a preset picture, the first measuring unit and the second measuring unit can be started simultaneously, so that brightness compensation can be performed simultaneously, thereby reducing the brightness compensation time.

[0089] S103, after starting the first measuring unit and the second measuring unit, the first data processing unit obtains first brightness data of the preset picture at a normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation.

[0090] The first data processing unit analyzes and processes the first brightness data output by the first measuring unit to obtain first brightness compensation data for adjusting the overall display brightness of the display panel, thereby balancing the brightness of the display panel.

[0091] S104, the second data processing unit obtains the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation.

[0092] The second data processing unit analyzes and processes the image data output by the second measuring unit to obtain pixel-level brightness compensation data for adjusting the uniformity between pixels in the display panel, thereby improving the display uniformity of the display panel.

[0093] In the embodiment of the present invention, when the display panel is controlled to display a preset picture, after the first measuring unit and the second measuring unit are started, the first data processing unit obtains first brightness data of the preset picture at a normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation; the second data processing unit obtains image data of the preset picture at a normal viewing angle output by the second measuring unit, and generates pixel-level brightness compensation data according to the image data to perform pixel brightness compensation; the entire surface brightness of the display panel and the brightness between each pixel are compensated at the same time, thereby reducing the optical compensation time and saving the compensation cost.

[0094] Optional, Figure 8 A flowchart of another optical compensation method for a display panel provided by an embodiment of the present invention is shown in FIG. Figure 8 As shown, the preset picture includes a first preset picture, the first preset picture includes a first light-emitting area and multiple second light-emitting areas, the first light-emitting area includes multiple hole areas that are spaced apart and arranged in an array, and the second light-emitting areas fill the hole areas; the first brightness data includes first sub-brightness data; the first brightness compensation data includes first sub-brightness compensation data; the image data includes first sub-image data; and the pixel-level brightness compensation data includes first pixel-level brightness compensation data.

[0095] The method includes:

[0096] S201, after the display panel is transferred to the carrying platform, controlling the display panel to display a preset picture.

[0097] S202, when controlling the display panel to display a preset picture, starting the first measuring unit and the second measuring unit.

[0098] S203, after starting the first measuring unit and the second measuring unit, the first data processing unit obtains the first brightness data of each second light-emitting area at a normal viewing angle output by the first measuring unit.

[0099] When the display panel displays the first preset picture, the first measuring unit and the second measuring unit simultaneously acquire data of the first preset picture, and the first measuring unit acquires first brightness data of the second light-emitting area in the first preset picture.

[0100] S204: Obtain a first preset brightness value.

[0101] Among them, the first preset brightness value can be set according to different display grayscales, reflecting the theoretical overall display brightness value of the display panel, and can be set accordingly according to actual design requirements, and the embodiment of the present invention does not make specific limitations.

[0102] S205 , generating first sub-brightness compensation data according to the first preset brightness value and the first brightness data, and performing brightness compensation.

[0103] Among them, when the first brightness data is greater than the first preset brightness value or the first brightness data is less than the first preset brightness value, the first sub-brightness compensation data is generated accordingly, which can adjust the overall display brightness of the display panel under the normal viewing angle and balance the display brightness to meet the demand.

[0104] S206, the second measuring unit obtains the first sub-image data of the first light-emitting area at the normal viewing angle output by the second measuring unit, wherein the display images of the first light-emitting area are different from those of the second light-emitting area.

[0105] The second measuring unit obtains second brightness data of the first preset picture, and the second measuring unit obtains first sub-image data of the first preset picture at a normal viewing angle, so as to facilitate subsequent pixel-level brightness compensation.

[0106] S207 , acquiring a first brightness difference between adjacent pixels in the first light-emitting area according to the first sub-image data.

[0107] The second data processing unit obtains the first brightness difference between pixels according to the image data, thereby ensuring the brightness uniformity between adjacent pixels.

[0108] S208: Obtain a first preset pixel brightness value.

[0109] The first preset pixel brightness value may be set according to different display grayscales. The first preset pixel brightness value may be set according to actual design requirements, and the embodiment of the present invention does not specifically limit this.

[0110] S209 , generating first sub-pixel level brightness compensation data according to the first brightness difference value and the first preset pixel brightness value, and performing pixel brightness compensation.

[0111] Among them, according to the first brightness difference between adjacent pixels and the first preset pixel brightness value, pixel brightness compensation can be performed accordingly, and first sub-pixel level brightness compensation data can be generated accordingly, thereby achieving display brightness uniformity of each pixel and ensuring display uniformity of the display panel.

[0112] In the embodiment of the present invention, the first measuring unit and the second measuring unit can work simultaneously and acquire data for the first preset picture. The first measuring unit acquires the first brightness data of each second light-emitting area, and the first data processing unit generates first sub-brightness compensation data according to the first brightness data and the first preset brightness data, thereby completing brightness compensation; at the same time, the second measuring unit acquires the image data of the first light-emitting area, and generates first sub-pixel-level brightness compensation data in combination with the first preset pixel brightness value, thereby realizing pixel-level brightness compensation, realizing the simultaneous operation of the first measuring unit and the second measuring unit, reducing the brightness compensation time, and saving the compensation cost.

[0113] Optional, Fig. 9 A flowchart of another optical compensation method for a display panel provided by an embodiment of the present invention is shown in FIG. Fig. 9 As shown, the preset picture includes a second preset picture and a third preset picture displayed in partitions, the second preset picture includes a plurality of third light-emitting areas arranged at intervals and in an array; the third preset picture includes a fourth light-emitting area arranged on the entire surface; the first brightness data also includes second sub-brightness data; the first brightness compensation data also includes second sub-brightness compensation data; the image data also includes second sub-image data; and the pixel-level brightness compensation data also includes second pixel-level brightness compensation data.

[0114] The method includes:

[0115] S301, after the display panel is transferred to the carrying platform, controlling the display panel to display a preset picture.

[0116] S302, when controlling the display panel to display a preset picture, starting the first measuring unit and the second measuring unit.

[0117] S303, after starting the first measuring unit and the second measuring unit, the first data processing unit obtains the first brightness data of each third light-emitting area at a normal viewing angle output by the first measuring unit.

[0118] Among them, when the display panel performs split-screen display, the preset picture includes a second preset picture and a third preset picture, the first data processing unit obtains the first brightness data of each third luminous area in the third preset picture, and the first data processing unit generates second sub-brightness compensation data based on the first brightness data to perform overall brightness compensation.

[0119] S304: Obtain a second preset brightness value.

[0120] Among them, the second preset brightness value can be set according to different display grayscales, reflecting the theoretical overall display brightness value of the display panel, and can be set accordingly according to actual design requirements, and the embodiment of the present invention does not make specific limitations.

[0121] S305 , generating second sub-brightness compensation data according to the second preset brightness value and the first brightness data, and performing brightness compensation.

[0122] Among them, when the first brightness data is greater than the second preset brightness value or the first brightness data is less than the second preset brightness value, the second sub-brightness compensation data is generated accordingly, which can adjust the overall display brightness of the display panel under the normal viewing angle and balance the display brightness to meet the needs.

[0123] S306: The second data processing unit obtains the second sub-image data of the fourth light-emitting area at the normal viewing angle output by the second measuring unit.

[0124] Among them, the second measuring unit obtains the second sub-image data of the fourth luminous area displayed on the entire surface, and then the second data processing unit extracts the brightness between adjacent pixels according to the second sub-image data to obtain second sub-pixel level brightness compensation data to achieve the overall display effect of the display panel.

[0125] S307, acquiring a second brightness difference between adjacent pixels in the fourth light-emitting area according to the second sub-image data.

[0126] The second data processing unit obtains the second brightness difference between pixels according to the second sub-image data, thereby ensuring the brightness uniformity between adjacent pixels.

[0127] S308: Obtain a second preset pixel brightness value.

[0128] The second preset pixel brightness value may be set according to different display grayscales. The second preset pixel brightness value may be set according to actual design requirements, and the embodiment of the present invention does not specifically limit this.

[0129] S309, generating second sub-pixel level brightness compensation data according to the brightness difference value and the second preset pixel brightness value, and performing pixel brightness compensation.

[0130] Among them, according to the brightness difference between adjacent pixels and the second preset pixel brightness value, pixel brightness compensation can be performed accordingly, and second sub-pixel level brightness compensation data can be generated accordingly, thereby achieving display brightness uniformity of each pixel and ensuring display uniformity of the display panel.

[0131] In the embodiment of the present invention, when the display panel displays different preset pictures at the same time, the first measuring unit and the second measuring unit respectively acquire data of different preset pictures, and the second data processing unit acquires second sub-image data of the fourth light-emitting area under the normal viewing angle output by the second measuring unit; acquires the brightness difference between adjacent pixels in the display panel according to the second sub-image data; acquires the preset pixel brightness value, generates second sub-pixel level brightness compensation data according to the brightness difference and the preset pixel brightness value, performs pixel brightness compensation, and realizes brightness compensation between adjacent pixels; and simultaneously uses the first measuring unit and the first data processing unit to perform overall display brightness compensation of the display panel, thereby effectively reducing the optical compensation time, improving the production capacity, and reducing the compensation cost.

[0132] In addition, the optical compensation method of the display panel also includes the following two specific implementations, both of which can effectively reduce the brightness compensation time and save compensation costs.

[0133] Optional, Fig.10 A flowchart of another optical compensation method for a display panel provided by an embodiment of the present invention is shown in FIG. Fig.10 As shown, the method includes:

[0134] S401, after the display panel is transferred to the carrying platform, controlling the display panel to display a preset picture.

[0135] S402, when controlling the display panel to display a preset picture, starting the first measuring unit and the second measuring unit.

[0136] S403, after starting the first measuring unit and the second measuring unit, the first data processing unit obtains first brightness data of the preset picture at a normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation.

[0137] S404, the second data processing unit obtains the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation.

[0138] S405, start the third measurement unit.

[0139] S406, after starting the third measuring unit, the second data processing unit obtains second brightness data of a preset picture at a preset viewing angle output by the third measuring unit, and generates second brightness compensation data according to the second brightness data to perform brightness compensation.

[0140] Among them, the optical compensation device is also provided with a third measuring unit, which forms a preset angle with the display panel, and then obtains the second brightness data of the preset picture at the preset viewing angle, and then the second data processing unit generates the second brightness compensation data accordingly, so as to realize the overall brightness compensation of the display panel at a wide viewing angle. At the same time, the preset viewing angle can be adjusted to realize the brightness compensation of the display panel at different wide viewing angles, thereby ensuring the uniformity of the overall display brightness of the display panel.

[0141] In the embodiment of the present invention, when the first measuring unit and the second measuring unit are started, the third measuring unit is started at the same time, and the second data processing unit obtains the second brightness data of the preset picture at the preset viewing angle output by the third measuring unit, and generates the second brightness compensation data according to the second brightness data to perform brightness compensation, so as to realize the overall brightness compensation of the display panel at both the normal viewing angle and the wide viewing angle, and compensate the brightness between adjacent pixels, so as to effectively reduce the optical compensation time of the display panel, improve the production capacity, and reduce the compensation cost.

[0142] Optional, Fig.11 A flowchart of another optical compensation method for a display panel provided by an embodiment of the present invention is shown in FIG. Fig.11 As shown, the method includes:

[0143] S501, after the display panel is transferred to the carrying platform, controlling the display panel to display a preset picture.

[0144] S502, when controlling the display panel to display a preset picture, starting the first measuring unit and the second measuring unit.

[0145] S503, after starting the first measuring unit and the second measuring unit, the first data processing unit obtains first brightness data of a preset picture at a normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation.

[0146] S504, the second data processing unit obtains the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation.

[0147] S505: Start the third measurement unit.

[0148] S506, after starting the third measuring unit, the second data processing unit obtains second brightness data of a preset picture at a preset viewing angle output by the third measuring unit.

[0149] S507: Obtain a third preset brightness value.

[0150] Among them, the second preset brightness value can be set according to different display grayscales, reflecting the theoretical overall display brightness value of the display panel, and can be set accordingly according to actual design requirements, and the embodiment of the present invention does not make specific limitations.

[0151] S508, generating second brightness compensation data according to the second brightness data and the third preset brightness value, and performing brightness compensation.

[0152] Among them, when the second brightness data is greater than the second preset brightness value or the second brightness data is less than the third preset brightness value, the second brightness compensation data is generated accordingly, which can adjust the overall display brightness of the display panel under a large viewing angle and balance the display brightness to meet the needs.

[0153] The second data processing unit of the embodiment of the present invention obtains the second brightness data of the preset picture at the preset viewing angle output by the third measuring unit; obtains the third preset brightness value; generates second brightness compensation data according to the second brightness data and the third preset brightness value, so as to adjust the overall brightness of the display panel at a large viewing angle and ensure the brightness uniformity of the display panel.

[0154] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical compensation device for a display panel, characterized in that: include: A carrying platform, used for carrying a display panel; A first measuring unit, located at a light-emitting side of the display panel, is used to obtain first brightness data when the display panel displays a preset picture at a normal viewing angle; A second measuring unit, located at the light-emitting side of the display panel, is used to obtain image data when the display panel displays a preset picture at a normal viewing angle; a first data processing unit connected to the first measuring unit, configured to receive the first brightness data, and generate first brightness compensation data according to the first brightness data to perform brightness compensation; a second data processing unit connected to the second measuring unit, configured to receive the image data, generate pixel-level brightness compensation data according to the image data, and perform pixel brightness compensation; The first measuring unit and the second measuring unit start working at the same time.

2. The optical compensation device for a display panel according to claim 1, characterized in that: The preset picture includes a first preset picture, the first preset picture includes a first light-emitting area and a plurality of second light-emitting areas, the first light-emitting area includes a plurality of hole areas that are spaced apart and arranged in an array, and the second light-emitting areas fill the hole areas; The first measuring unit acquires first brightness data of each of the second light-emitting areas at a normal viewing angle; The second measuring unit acquires image data of the first light-emitting area at a normal viewing angle, wherein: The first light emitting area and the second light emitting area display different images.

3. The optical compensation device for a display panel according to claim 2, characterized in that: The second measuring unit further acquires sub-image data of the second light-emitting area at a normal viewing angle, wherein the display screen of the second light-emitting area is the same as that of the first light-emitting area.

4. The optical compensation device for a display panel according to claim 1, characterized in that: The preset screen includes a second preset screen and a third preset screen displayed in partitions, The second preset image includes a plurality of third light-emitting areas which are spaced apart and arranged in an array; The third preset picture includes a fourth light-emitting area arranged on the entire surface; The first measuring unit is used to obtain first brightness data of each of the third light-emitting areas at a normal viewing angle; The second measuring unit is used to obtain image data of the fourth light-emitting area at a normal viewing angle.

5. The optical compensation device for a display panel according to claim 1, characterized in that: It also includes a third measuring unit, which is connected to the second data processing unit and is located at the light-emitting side of the display panel, and is used to obtain second brightness data when the display panel displays a preset picture at a preset viewing angle; The second data processing unit is further used to receive the second brightness data, and generate second brightness compensation data according to the second brightness data to perform brightness compensation; The preset viewing angle is the angle between the central axis of the third measuring subunit and the plane where the display panel is located.

6. The optical compensation device for a display panel according to claim 5, characterized in that: The preset viewing angle is θ, wherein 0°≤θ≤90°.

7. The optical compensation device for a display panel according to claim 1, characterized in that: Along the vertical light emitting direction of the display panel, the projection of the first measuring unit is located in the central area of ​​the display panel, and the first measuring unit and the second measuring unit are arranged adjacent to each other.

8. An optical compensation method for a display panel, applied to an optical compensation device for a display panel according to any one of claims 1 to 7, characterized in that: include: After the display panel is transferred to the carrying platform, controlling the display panel to display a preset picture; When controlling the display panel to display a preset picture, starting the first measuring unit and the second measuring unit; After the first measuring unit and the second measuring unit are started, the first data processing unit obtains first brightness data of the preset picture at a normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation; The second data processing unit obtains the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation.

9. The optical compensation method of a display panel according to claim 8, characterized in that: The first brightness data includes first sub-brightness data; the first brightness compensation data includes first sub-brightness compensation data; the image data includes first sub-image data; the pixel-level brightness compensation data includes first pixel-level brightness compensation data; The first data processing unit acquires the first brightness data of the preset picture at the normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation; including: The first data processing unit acquires the first sub-brightness data of each second light-emitting area at a normal viewing angle output by the first measuring unit; Obtaining a first preset brightness value; Generate first sub-brightness compensation data according to the first preset brightness value and the first brightness data to perform brightness compensation; The second data processing unit acquires the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation, including: The second measuring unit acquires the first sub-image data of the first light-emitting area at the normal viewing angle output by the second measuring unit, wherein the display images of the first light-emitting area and the second light-emitting area are different; Acquire a first brightness difference between adjacent pixels in the first light-emitting area according to the first sub-image data; Obtaining a first preset pixel brightness value; First sub-pixel level brightness compensation data is generated according to the first brightness difference value and the first preset pixel brightness value to perform pixel brightness compensation.

10. The optical compensation method of a display panel according to claim 8, characterized in that: The first brightness data also includes second sub-brightness data; the first brightness compensation data also includes second sub-brightness compensation data; the image data also includes second sub-image data; the pixel-level brightness compensation data also includes second pixel-level brightness compensation data; The first data processing unit acquires the first brightness data of the preset picture at the normal viewing angle output by the first measuring unit, and generates first brightness compensation data according to the first brightness data to perform brightness compensation; including: The first data processing unit acquires the first brightness data of each third light-emitting area at a normal viewing angle output by the first measuring unit; Obtaining a second preset brightness value; Generate second sub-brightness compensation data according to the second preset brightness value and the first brightness data to perform brightness compensation; The second data processing unit acquires the image data of the preset picture at the normal viewing angle output by the second measuring unit, generates pixel-level brightness compensation data according to the image data, and performs pixel brightness compensation, including: A second data processing unit acquires second sub-image data of the fourth light-emitting area at a normal viewing angle output by the second measuring unit; Acquire a second brightness difference between adjacent pixels in the fourth light emitting area according to the second sub-image data; Obtaining a second preset pixel brightness value; Second sub-pixel level brightness compensation data is generated according to the second brightness difference value and the second preset pixel brightness value to perform pixel brightness compensation.

Images