Optical compensation device and method for display panel

Abstract

The application discloses an optical compensation device and method of a display panel. The optical compensation device of the display panel comprises a bearing platform for bearing the display panel; a first measuring unit for obtaining first luminance data when the display panel displays a preset picture at a normal viewing angle; a second measuring unit for obtaining image data when the display panel displays the preset picture at the normal viewing angle; a first data processing unit connected with the first measuring unit, for receiving the first luminance data and generating first luminance compensation data according to the first luminance data to perform luminance compensation; and a second data processing unit connected with the second measuring unit, for receiving the image data and generating pixel-level luminance compensation data according to the image data to perform pixel luminance compensation; wherein the first measuring unit and the second measuring unit are simultaneously started to work, so that the luminance of the whole surface of the display panel and the luminance between pixels are compensated at the same time, the optical compensation time is reduced, and the compensation cost is saved.

Description

Technical Field

[0001] This invention relates to the field of display panel testing technology, and in particular to an optical compensation device and method for display panels. Background Technology

[0002] Due to various factors in the manufacturing process, each display panel may exhibit 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 displayed on each panel may vary, severely impacting display uniformity. To address this issue, there is an urgent need for an optical compensation device to compensate for optical deviations in the display panels. Summary of the Invention

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

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

[0005] The support platform is used to support the display panel;

[0006] The first measuring unit is located on the light-emitting side of the display panel and is used to acquire the first brightness data when the display panel displays a preset image at a normal viewing angle.

[0007] The second measurement unit is located on the light-emitting side of the display panel and is used to acquire image data when the display panel displays a preset image at a normal viewing angle.

[0008] A first data processing unit, connected to the first measurement unit, is used to receive the first brightness data and generate first brightness compensation data based on the first brightness data to perform brightness compensation.

[0009] The second data processing unit, connected to the second measurement unit, is used to receive the image data and generate pixel-level brightness compensation data based on the image data to perform pixel brightness compensation.

[0010] The first measurement unit and the second measurement unit start working simultaneously.

[0011] Optionally, the preset screen includes a first preset screen, the first preset screen 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;

[0012] The first measurement unit acquires first brightness data for each of the second light-emitting regions under a positive viewing angle;

[0013] The second measurement unit acquires image data of the first luminous area under a normal viewing angle, wherein the display images of the first luminous area and the second luminous area are different.

[0014] Optionally, the second measurement unit also acquires sub-image data of the second luminous region under a normal viewing angle, wherein the second luminous region is the same as the display screen of the first luminous region.

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

[0016] The second preset screen includes multiple third light-emitting areas that are spaced apart and arranged in an array;

[0017] The third preset screen includes a fourth luminous area that is set across the entire surface;

[0018] The first measurement unit is used to acquire the first brightness data of each of the third light-emitting regions under a positive viewing angle;

[0019] The second measurement unit is used to acquire image data of the fourth luminescent region under a positive viewing angle.

[0020] Optionally, a third measurement unit is also included, connected to the second data processing unit and located on the light-emitting side of the display panel, for acquiring second brightness data when the display panel displays a preset image at a preset viewing angle;

[0021] The second data processing unit is also used to receive the second brightness data and generate second brightness compensation data based on 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 the vertical light emission direction of the display panel, the projection of the first measuring unit is located in the central region 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, an optical compensation method for a display panel is provided, which is applied to an optical compensation device for a display panel as described in any of the above aspects, comprising:

[0026] After the display panel is transferred to the carrier platform, the display panel is controlled to display a preset screen;

[0027] When controlling the display panel to display a preset screen, the first measurement unit and the second measurement unit are activated.

[0028] After the first measurement unit and the second measurement unit are started, the first data processing unit obtains the first brightness data of the preset screen under the positive viewing angle output by the first measurement unit, and generates the first brightness compensation data based on the first brightness data to perform brightness compensation;

[0029] The second data processing unit acquires the image data of the preset screen output by the second measurement unit under a positive viewing angle, and generates pixel-level brightness compensation data based on the image data to perform 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; and 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 image under a positive viewing angle output by the first measurement unit, and generates first brightness compensation data based on the first brightness data to perform brightness compensation; including:

[0032] The first data processing unit acquires the first brightness data of each second luminous region under a positive viewing angle, output by the first measurement unit;

[0033] Obtain the first preset brightness value;

[0034] First sub-brightness compensation data is generated based on the first preset brightness value and the first brightness data, and brightness compensation is performed.

[0035] The second data processing unit acquires the image data of the preset scene output by the second measurement unit under a positive viewing angle, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation, including:

[0036] The second measurement unit acquires the first sub-image data of the first luminous area output by the second measurement unit under a positive viewing angle, wherein the display images of the first luminous area and the second luminous area are different;

[0037] The first brightness difference between adjacent pixels in the first luminous region is obtained based on the first sub-image data.

[0038] Obtain the first preset pixel brightness value;

[0039] First sub-pixel level brightness compensation data is generated based on the first brightness difference and the first preset pixel brightness value, and pixel brightness compensation is performed.

[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; and 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 image under a positive viewing angle output by the first measurement unit, and generates first brightness compensation data based on the first brightness data to perform brightness compensation; including:

[0042] The first data processing unit acquires the first brightness data of each third luminous region output by the first measurement unit under a positive viewing angle;

[0043] Obtain the second preset brightness value;

[0044] Based on the second preset brightness value and the first brightness data, second sub-brightness compensation data is generated, and brightness compensation is performed.

[0045] The second data processing unit acquires the image data of the preset scene output by the second measurement unit under a positive viewing angle, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation, including:

[0046] The second data processing unit acquires the second sub-image data of the fourth luminous region output by the second measurement unit under a positive viewing angle;

[0047] The second brightness difference between adjacent pixels in the fourth luminous region is obtained based on the second sub-image data.

[0048] Obtain the second preset pixel brightness value;

[0049] The second sub-pixel level brightness compensation data is generated based on the second brightness difference and the second preset pixel brightness value, and pixel brightness compensation is performed.

[0050] The technical solution of this invention provides an optical compensation device for a display panel, comprising: a support platform for supporting the display panel; a first measurement unit located on the light-emitting side of the display panel for acquiring first brightness data when the display panel displays a preset image at a normal viewing angle; a second measurement unit located on the light-emitting side of the display panel for acquiring image data when the display panel displays the preset image at a normal viewing angle; a first data processing unit connected to the first measurement unit for receiving the first brightness data and generating first brightness compensation data based on the first brightness data to perform brightness compensation; and a second data processing unit connected to the second measurement unit for receiving image data and generating pixel-level brightness compensation data based on the image data to perform pixel brightness compensation. The first and second measurement units operate simultaneously, enabling simultaneous compensation of the overall brightness of the display panel and the brightness between individual pixels, reducing optical compensation time and saving compensation costs.

[0051] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

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

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

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

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

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

[0059] Figure 7 A flowchart illustrating an optical compensation method for a display panel provided in an embodiment of the present invention;

[0060] Figure 8 A flowchart illustrating another optical compensation method for a display panel provided in an embodiment of the present invention;

[0061] Figure 9 A flowchart of another optical compensation method for a display panel provided in an embodiment of the present invention;

[0062] Figure 10 A flowchart illustrating another optical compensation method for a display panel provided in an embodiment of the present invention;

[0063] Figure 11 A flowchart of another optical compensation method for a display panel provided in an embodiment of the present invention. Detailed Implementation

[0064] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort 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, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0066] Figure 1 This is a schematic diagram of the structure of an optical compensation device for a display panel provided in an embodiment of the present invention. Figure 2 This is a top view schematic diagram of an optical compensation device for a display panel provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of a preset screen of a display panel provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of a preset screen of another display panel provided in an embodiment of the present invention, as shown below. Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the optical compensation device 100 for the display panel includes: a support platform 101 for supporting the display panel 102; a first measurement unit 103 located on the light-emitting side of the display panel 102 for acquiring first brightness data when the display panel 102 displays a preset image 10 at a normal viewing angle; a second measurement unit 104 located on the light-emitting side of the display panel 102 for acquiring image data when the display panel 102 displays the preset image 10 at a normal viewing angle; a first data processing unit 105 connected to the first measurement unit 103 for receiving the first brightness data and generating first brightness compensation data based on the first brightness data to perform brightness compensation; and a second data processing unit 106 connected to the second measurement unit 104 for receiving image data and generating pixel-level brightness compensation data based on the image data to perform pixel brightness compensation; wherein the first measurement unit 103 and the second measurement unit 104 start working simultaneously.

[0067] The support platform 101 supports the display panel 102 to be tested. Before the first measurement unit 103 and the second measurement unit 104 are started, the display panel 102 needs to be lit up to display the preset image 10. The first measurement unit 103 and the second measurement unit 104 are integrated into the optical compensation device 100 of the display panel, saving space. The first measurement unit 103 and the second measurement unit 104 work simultaneously, effectively reducing optical compensation time and improving production efficiency. The preset images 10 corresponding to the first measurement unit 103 and the second measurement unit 104 can be the same, corresponding to the same grayscale, and optical compensation can be performed under the same preset image 10; or as... Figure 4 As shown, the preset screens corresponding to the first measurement unit 103 and the second measurement unit 104 can be different, corresponding to different gray levels. At the same time, the current preset screen of the display panel 102 can be switched to other preset screens, so that the first measurement unit 103 and the second measurement unit 104 can perform optical compensation under different preset screens.

[0068] The first measurement unit 103 is positioned in the vertical light-emitting direction of the display panel 102. The first measurement unit 103 may include a luminance meter. The first measurement unit 103 acquires first luminance data when the display panel 102 displays a preset image 10 from a normal viewing angle. Typically, the preset image 10 has high-brightness display areas and low-brightness display areas. The high-brightness display areas can be arranged in an array across the entire surface, and the number can be selected according to actual design requirements; this embodiment of the invention does not impose specific limitations. The more high-brightness display areas there are, the more accurate the brightness measurement. The first measurement unit 103 obtains the first luminance data reflecting the brightness of the display panel 102 by acquiring the brightness of the high-brightness display areas. The first measurement unit 103 is connected to the first data processing unit 105. The first data processing unit 105 receives the first luminance data. Since the first data processing unit 105 stores the preset luminance value of the current preset image 10, it compares the first luminance data with the preset luminance value to determine whether the current brightness of the display panel 102 is too high or too low, and generates corresponding first luminance compensation data to balance the brightness of the display panel 102, thus completing the compensation. The second measurement unit 104 is also disposed in the vertical light-emitting direction of the display panel 102. The second measurement unit 104 may include at least one of cameras such as a CCD camera, an HDR camera, and an industrial camera. The second measurement unit 104 acquires image data of the display panel 102 when displaying the preset screen 10 from a positive viewing angle, that is, acquires the image of the current preset screen 10. The pixel value of the second measurement unit 104 is not the pixel data written to the pixels of the display panel 102, but the digital value output from the pixels of the image sensor of the second measurement unit 104. Therefore, the second measurement 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 obtains the corresponding grayscale deviation between adjacent pixels in the display panel 102. Then, it generates pixel-level brightness compensation data to perform pixel brightness compensation of the display panel 102, ensuring that the screen with uneven brightness in the display panel 102 is accurately compensated, and improving the overall display uniformity of the display panel 102.

[0069] This invention, through an optical compensation device for a display panel, simultaneously comprises a first measurement unit, a second measurement unit, a first data processing unit, and a second data processing unit. The first measurement unit acquires first brightness data when the display panel displays a preset image from a normal viewing angle; the second measurement unit acquires image data when the display panel displays the preset image from a normal viewing angle; the first data processing unit, connected to the first measurement unit, receives the first brightness data and generates first brightness compensation data based on the first brightness data for brightness compensation; the second data processing unit, connected to the second measurement unit, receives image data and generates pixel-level brightness compensation data based on the image data for pixel brightness compensation. This achieves simultaneous compensation for the overall brightness of the display panel and the brightness between individual pixels, reducing optical compensation time and saving compensation costs.

[0070] Optional, continue to refer to Figure 3 The preset screen 10 includes a first preset screen 11, which 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 spaced-apart and arrayed punch-hole areas 1111, and the second light-emitting areas 112 fill the punch-hole areas 1111. The first measurement unit 103 acquires the first brightness data of each second light-emitting area 112 under a positive viewing angle. The second measurement unit 104 acquires the image data of the first light-emitting area 111 under a positive viewing angle, wherein the display screens of the first light-emitting area 111 and the second light-emitting areas 112 are different.

[0071] 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 a 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 spaced-apart and arrayed punch-hole areas 1111. The second light-emitting areas 112 fill the punch-hole areas 1111, so that the second light-emitting areas 112 are spaced-apart and arrayed. The more second light-emitting areas 112 there are, 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 punch-hole area, and can be circular, rectangular, square, etc. The specific shape is not specifically limited in this embodiment of the invention. In this embodiment of the invention, the second light-emitting area 112 is shown as circular. When the display panel 102 displays the first preset image 11, the first measurement unit 103 and the second measurement unit 104 are activated simultaneously. The first measurement unit 103 only acquires the first brightness data of each second light-emitting area 112. 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. Then, the first data processing unit 105 can perform brightness compensation based on the first brightness data and the preset brightness data to adjust the overall brightness of the display panel 102. Since the displayed images of the first light-emitting area 111 and the second light-emitting area 112 are different, the brightness of the second light-emitting area 112 is usually higher than that of the first light-emitting area 111. The light color of the first light-emitting area 111 can be white, and the light 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 screen 11, the second measurement unit 104 only acquires the image data of the first light-emitting area 111, and the second data processing unit 106 identifies the brightness between adjacent pixels based on the image data, and then acquires pixel-level brightness compensation data accordingly, thereby ensuring the overall display uniformity of the display panel 102.

[0072] Optional, continue to refer to Figure 3 The second measurement unit 104 also acquires sub-image data of the second luminous area 112 under a normal viewing angle, wherein the second luminous area 112 is the same as the display screen of the first luminous area 111.

[0073] To ensure the optical compensation effect of the second data processing unit 106 on the display panel, the first measurement unit 103 can acquire the first brightness data of the second light-emitting area 112, and the second measurement unit 104 can adjust the display screen of the second light-emitting area 112 to be the same as the display screen of the first light-emitting area 111 after acquiring the image data of the first light-emitting area 111. This allows the second measurement unit 104 to acquire only 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 acquire pixel-level brightness compensation data and perform pixel brightness compensation on the display panel 102. This ensures accurate compensation for uneven brightness in the display panel 102 and improves the overall display uniformity of the display panel 102.

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

[0075] Optional, Figure 5 This is a schematic diagram of a preset screen of another display panel provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of a preset screen of another display panel provided in an embodiment of the present invention, as shown below. 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 multiple third light-emitting areas 121 that are spaced apart and arranged in an array. The third preset screen 13 includes a fourth light-emitting area 131 that covers the entire surface. The first measurement unit 103 is used to acquire the first brightness data of each third light-emitting area 121 under a normal viewing angle. The second measurement unit 104 is used to acquire the image data of the fourth light-emitting area 131 under a normal viewing angle.

[0076] Among them, the display panel 102 can realize split-screen display, and the split-screen display can be as follows: Figure 4 The image is displayed horizontally, as shown below. Figure 5 The image is displayed vertically or as shown below. Figure 6The display panel 102 is multi-grid, allowing it to simultaneously display a second preset screen 12 and a third preset screen 13. The second preset screen 12 may include multiple spaced and arrayed third light-emitting areas 121, facilitating the first measurement unit 103 to acquire the first brightness data of each third light-emitting area 121. Subsequently, the first data processing unit 105 performs brightness compensation on the display panel 102. The third preset screen 13 includes a fourth light-emitting area 131 on the front, facilitating the second measurement unit 104 to acquire image data of the entire fourth light-emitting area 131. Subsequently, the second data processing unit 106 extracts the brightness between adjacent pixels based on the image data to obtain pixel-level brightness compensation data. During the compensation process, the second preset screen 12 can also be adjusted to provide compensation, achieving the overall display effect of the display panel 102.

[0077] The display panel 102 can also switch the displayed screen, so that the second preset screen 12 and the third preset screen 13 can be changed to different positions, thereby realizing the 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 It also includes a third measurement unit 107, which is connected to the second data processing unit 106 and located on the light-emitting side of the display panel 102. It is used to acquire second brightness data when the display panel 102 displays the preset image 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 based on the second brightness data to perform brightness compensation. The preset viewing angle is the angle between the central axis of the third measurement unit 107 and the plane where the display panel 102 is located.

[0079] The third measurement unit 107 may include a luminance meter. The third measurement unit 107 is capable of acquiring the second luminance data of the preset screen of the display panel 102 under a wide viewing angle. The third measurement unit 107 is connected to the second data processing unit 106, so that the second data processing unit 106 can acquire the second luminance compensation data according to the second luminance data, thereby compensating for the uneven luminance of the display panel 102 under a wide viewing angle and ensuring 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] The third measurement unit 107 can be preset to adjust the viewing angle according to actual design requirements. By reasonably setting the angle between the third measurement unit 107 and the display panel 102, the third measurement unit 107 can collect the second brightness data of the preset screen of the display panel 102 from a wide viewing angle and make corresponding compensation. Together with the first measurement unit 103, the first brightness data of the display panel 102 is collected from the normal viewing angle, so as to ensure that the display panel 102 can be accurately compensated from different viewing angles and to ensure the display effect of the display panel 102.

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

[0083] The first measurement unit 103 collects the overall brightness of the display panel 102. Therefore, along the vertical light emission direction X of the display panel 102, the projection of the first measurement unit 103 is located in the central area of ​​the display panel 102. This allows the first measurement unit 103 to comprehensively acquire the brightness of the preset image on the display panel 102, thereby ensuring uniform brightness throughout the display panel 102. The first measurement unit 103 and the second measurement unit 104 are arranged adjacent to each other, meaning they are located in the same plane and side-by-side. This ensures that the second measurement unit 104 is close to the central area 108 of the display panel 102, guaranteeing that it can capture the preset image effect on the display panel 102 and thus ensuring the accuracy of subsequent optical compensation.

[0084] Figure 7 A flowchart of an optical compensation method for a display panel provided in an embodiment of the present invention is shown below. Figure 7 As shown, an optical compensation device is applied to a display panel according to any one of the above embodiments, the method comprising:

[0085] S101: After the display panel is transferred to the carrier platform, control the display panel to display the preset screen.

[0086] The process involves placing the display panel to be tested on the carrier platform and simultaneously lighting up the display panel to show a preset image, which facilitates the normal operation of the first and second measurement units.

[0087] S102, when the preset screen is displayed on the control display panel, the first measurement unit and the second measurement unit are started.

[0088] After the preset image is displayed on the display panel, the first measurement unit and the second measurement unit can be activated simultaneously to perform brightness compensation at the same time, thereby reducing the brightness compensation time.

[0089] S103, after starting the first measurement unit and the second measurement unit, the first data processing unit obtains the first brightness data of the preset screen under the positive viewing angle output by the first measurement unit, and generates the 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 measurement unit to obtain the 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 acquires the image data of the preset screen at the frontal view output by the second measurement unit, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation.

[0092] The second data processing unit analyzes and processes the image data output by the second measurement 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 this embodiment of the invention, when the control display panel displays a preset image, after activating the first measurement unit and the second measurement unit, the first data processing unit acquires the first brightness data of the preset image output by the first measurement unit at a normal viewing angle, and generates first brightness compensation data based on the first brightness data for brightness compensation; the second data processing unit acquires the image data of the preset image output by the second measurement unit at a normal viewing angle, and generates pixel-level brightness compensation data based on the image data for pixel brightness compensation; thus, it achieves simultaneous compensation of the overall brightness of the display panel and the brightness between individual pixels, reducing optical compensation time and saving compensation costs.

[0094] Optional, Figure 8 A flowchart of another optical compensation method for a display panel provided in an embodiment of the present invention is shown below. Figure 8 As shown, the preset screen includes a first preset screen, which includes a first luminous area and multiple second luminous areas. The first luminous area includes multiple punched areas that are spaced apart and arranged in an array, and the second luminous areas fill the punched 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. 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 carrier platform, controls the display panel to display a preset screen.

[0097] S202, when the preset screen is displayed on the control display panel, the first measurement unit and the second measurement unit are started.

[0098] S203, after starting the first measurement unit and the second measurement unit, the first data processing unit acquires the first brightness data of each second luminous region under the positive viewing angle output by the first measurement unit.

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

[0100] S204, Obtain the first preset brightness value.

[0101] The first preset brightness value can be set according to different display gray levels, reflecting the theoretical overall display brightness value of the display panel. It can be set according to actual design requirements, and the embodiments of the present invention do not impose specific limitations.

[0102] S205, Generate first sub-brightness compensation data based on the first preset brightness value and the first brightness data, and perform brightness compensation.

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

[0104] S206, the second measurement unit acquires the first sub-image data of the first luminous area output by the second measurement unit under a positive viewing angle, wherein the display images of the first luminous area and the second luminous area are different.

[0105] The second measurement unit acquires the second brightness data of the first preset image, and the second measurement unit acquires the first sub-image data of the first preset image from a normal viewing angle, which facilitates subsequent pixel-level brightness compensation.

[0106] S207, obtain the first brightness difference between adjacent pixels in the first luminous region based on the first sub-image data.

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

[0108] S208, Obtain the first preset pixel brightness value.

[0109] The first preset pixel brightness value can be set according to different display gray levels. The first preset pixel brightness value can be set according to actual design requirements. This embodiment of the invention does not impose specific limitations.

[0110] S209, Generate first sub-pixel level brightness compensation data based on the first brightness difference and the first preset pixel brightness value, and perform pixel brightness compensation.

[0111] Specifically, based on 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 uniformity of display brightness for each pixel and ensuring the uniformity of display panel display.

[0112] In this embodiment of the invention, the first measurement unit and the second measurement unit can work simultaneously to acquire data from the first preset image. The first measurement unit acquires the first brightness data of each second luminous area, and the first data processing unit generates first sub-brightness compensation data based on the first brightness data and the first preset brightness data, thereby completing brightness compensation. At the same time, the second measurement unit acquires the image data of the first luminous area and combines it with the first preset pixel brightness value to generate first sub-pixel-level brightness compensation data, thereby achieving pixel-level brightness compensation. This allows the first measurement unit and the second measurement unit to work simultaneously, reducing brightness compensation time and saving compensation costs.

[0113] Optional, Figure 9 A flowchart of another optical compensation method for a display panel provided in an embodiment of the present invention is shown below. Figure 9 As shown, the preset screen includes a second preset screen and a third preset screen displayed in partitions. The second preset screen includes multiple third light-emitting areas that are spaced apart and arranged in an array. The third preset screen includes a fourth light-emitting area that covers 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. The pixel-level brightness compensation data also includes second pixel-level brightness compensation data.

[0114] The method includes:

[0115] S301 controls the display panel to display a preset image after it is transferred to the carrier platform.

[0116] S302, when the preset screen is displayed on the control display panel, the first measurement unit and the second measurement unit are started.

[0117] S303, after starting the first measurement unit and the second measurement unit, the first data processing unit acquires the first brightness data of each third luminous region under the positive viewing angle output by the first measurement unit.

[0118] When the display panel is used for split-screen display, the preset screen includes a second preset screen and a third preset screen. The first data processing unit obtains the first brightness data of each third light-emitting area in the third preset screen. The first data processing unit generates second sub-brightness compensation data based on the first brightness data and performs overall brightness compensation.

[0119] S304, Obtain the second preset brightness value.

[0120] The second preset brightness value can be set according to different display gray levels, reflecting the theoretical overall display brightness value of the display panel. It can be set according to actual design requirements, and the embodiments of the present invention do not impose specific limitations.

[0121] S305, Generate second sub-brightness compensation data based on the second preset brightness value and the first brightness data, and perform brightness compensation.

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

[0123] S306, the second data processing unit acquires the second sub-image data of the fourth luminous region output by the second measurement unit under a positive viewing angle.

[0124] The second measurement unit acquires the second sub-image data of the fourth light-emitting area of ​​the entire display, and then the second data processing unit extracts the brightness between adjacent pixels based on the second sub-image data to obtain the second sub-pixel level brightness compensation data, thereby realizing the overall display effect of the display panel.

[0125] S307, obtain the second brightness difference between adjacent pixels in the fourth luminous region based on the second sub-image data.

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

[0127] S308, Obtain the second preset pixel brightness value.

[0128] The second preset pixel brightness value can be set according to different display gray levels. The second preset pixel brightness value can be set according to actual design requirements. This embodiment of the invention does not impose specific limitations.

[0129] S309: Generate second sub-pixel level brightness compensation data based on the brightness difference and the second preset pixel brightness value, and perform pixel brightness compensation.

[0130] Specifically, based on 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 uniformity of display brightness for each pixel and ensuring the uniformity of display panel display.

[0131] In this embodiment of the invention, when different preset images are simultaneously displayed on the display panel, the first measurement unit and the second measurement unit acquire data for each preset image, and the second data processing unit acquires the second sub-image data of the fourth luminous area output by the second measurement unit under a positive viewing angle; the brightness difference between adjacent pixels in the display panel is obtained based on the second sub-image data; a preset pixel brightness value is obtained, and second sub-pixel-level brightness compensation data is generated based on the brightness difference and the preset pixel brightness value to perform pixel brightness compensation, thereby achieving brightness compensation between adjacent pixels; simultaneously, the first measurement unit and the first data processing unit are used to perform overall display brightness compensation of the display panel, effectively reducing optical compensation time, increasing production capacity, and reducing compensation costs.

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

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

[0134] S401 controls the display panel to display a preset image after it is transferred to the carrier platform.

[0135] S402, when the preset screen is displayed on the control display panel, the first measurement unit and the second measurement unit are started.

[0136] S403, after starting the first measurement unit and the second measurement unit, the first data processing unit obtains the first brightness data of the preset screen under the positive viewing angle output by the first measurement unit, and generates the first brightness compensation data according to the first brightness data to perform brightness compensation.

[0137] S404, the second data processing unit acquires the image data of the preset screen output by the second measurement unit under the positive viewing angle, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation.

[0138] S405, start the third measurement unit.

[0139] S406, after the third measurement unit is started, the second data processing unit obtains the second brightness data of the preset screen under the preset viewing angle output by the third measurement unit, and generates second brightness compensation data according to the second brightness data to perform brightness compensation.

[0140] The optical compensation device also includes a third measurement unit. The third measurement unit is at a preset angle to the display panel, and then acquires the second brightness data of the preset image at the preset viewing angle. The second data processing unit then generates the second brightness compensation data accordingly, so as to realize the overall brightness compensation of the display panel at a large viewing angle. At the same time, the preset viewing angle can be adjusted to realize the brightness compensation of the display panel at different large viewing angles, so as to ensure the uniformity of the overall display brightness of the display panel.

[0141] This invention, in its embodiment, simultaneously activates a third measurement unit when starting the first and second measurement units. The second data processing unit acquires the second brightness data of the preset screen at a preset viewing angle output by the third measurement unit, and generates second brightness compensation data based on the second brightness data to perform brightness compensation. This enables overall brightness compensation of the display panel at both normal and wide viewing angles, as well as brightness compensation between adjacent pixels, effectively reducing the optical compensation time of the display panel, increasing production capacity, and reducing compensation costs.

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

[0143] S501 controls the display panel to display a preset image after it is transferred to the carrier platform.

[0144] S502, when the preset screen is displayed on the control display panel, the first measurement unit and the second measurement unit are started.

[0145] S503, after starting the first measurement unit and the second measurement unit, the first data processing unit obtains the first brightness data of the preset screen under the positive viewing angle output by the first measurement unit, and generates the first brightness compensation data based on the first brightness data to perform brightness compensation.

[0146] S504, the second data processing unit acquires the image data of the preset screen output by the second measurement unit under the positive viewing angle, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation.

[0147] S505, start the third measurement unit.

[0148] S506, after the third measurement unit is started, the second data processing unit obtains the second brightness data of the preset screen under the preset viewing angle output by the third measurement unit.

[0149] S507, obtain the third preset brightness value.

[0150] The second preset brightness value can be set according to different display gray levels, reflecting the theoretical overall display brightness value of the display panel. It can be set according to actual design requirements, and the embodiments of the present invention do not impose specific limitations.

[0151] S508 generates second brightness compensation data based on the second brightness data and the third preset brightness value, and performs brightness compensation.

[0152] Specifically, when the second brightness data is greater than the second preset brightness value or less than the third preset brightness value, corresponding second brightness compensation data is generated, which can adjust the overall display brightness of the display panel under a wide viewing angle and balance the display brightness to meet the requirements.

[0153] In this embodiment of the invention, the second data processing unit acquires the second brightness data of the preset screen at a preset viewing angle output by the third measurement unit; acquires the third preset brightness value; and generates second brightness compensation data based on the second brightness data and the third preset brightness value, thereby realizing the overall brightness adjustment of the display panel at a wide viewing angle and ensuring the brightness uniformity of the display panel.

[0154] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

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

2. The optical compensation device for the display panel according to claim 1, characterized in that, The preset screen includes a first preset screen, which 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 measurement unit acquires first brightness data for each of the second luminous regions under a positive viewing angle; The second measurement unit acquires image data of the first luminescent region under a normal viewing angle, wherein; The display images in the first luminous area and the second luminous area are different.

3. The optical compensation device for the display panel according to claim 2, characterized in that, The second measurement unit also acquires sub-image data of the second luminous area under a normal viewing angle, wherein the second luminous area is the same as the display screen of the first luminous area.

4. The optical compensation device for the 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 screen includes multiple third light-emitting areas that are spaced apart and arranged in an array; The third preset screen includes a fourth luminous area that is set across the entire surface; The first measurement unit is used to acquire the first brightness data of each of the third light-emitting regions under a positive viewing angle; The second measurement unit is used to acquire image data of the fourth luminescent region under a positive viewing angle.

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

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

7. The optical compensation device for the display panel according to claim 1, characterized in that, Along the vertical light emission 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 the optical compensation device of the display panel according to any one of claims 1-7, characterized in that, include: After the display panel is transferred to the carrier platform, the display panel is controlled to display a preset screen; When controlling the display panel to display a preset screen, the first measurement unit and the second measurement unit are activated. After the first measurement unit and the second measurement unit are started, the first data processing unit obtains the first brightness data of the preset screen under the positive viewing angle output by the first measurement unit, and generates the first brightness compensation data according to the first brightness data to perform brightness compensation. The second data processing unit acquires the image data of the preset screen output by the second measurement unit under a positive viewing angle, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation.

9. The optical compensation method for 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 preset screen includes a first preset screen, the first preset screen includes a first luminous area and a plurality of second luminous areas, the first luminous area includes a plurality of spaced and arrayed punch-hole areas, and the second luminous areas fill the punch-hole areas; The first data processing unit acquires the first brightness data of the preset image under a positive viewing angle output by the first measurement unit, and generates first brightness compensation data based on the first brightness data to perform brightness compensation; including: The first data processing unit acquires the first sub-brightness data of each of the second luminous regions under a positive viewing angle, output by the first measurement unit; Obtain the first preset brightness value; First sub-brightness compensation data is generated based on the first preset brightness value and the first sub-brightness data, and brightness compensation is performed. The second data processing unit acquires the image data of the preset image from the second measurement unit at a normal viewing angle, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation, including: The second data processing unit acquires the first sub-image data of the first luminous area output by the second measurement unit under a positive viewing angle, wherein the display images of the first luminous area and the second luminous area are different. The first brightness difference between adjacent pixels in the first luminous region is obtained based on the first sub-image data. Obtain the first preset pixel brightness value; First pixel-level brightness compensation data is generated based on the first brightness difference and the first preset pixel brightness value, and pixel brightness compensation is performed.

10. The optical compensation method for 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 preset screen includes a second preset screen and a third preset screen displayed in partitions, the second preset screen includes multiple third light-emitting areas set at intervals and arranged in an array; the third preset screen includes a fourth light-emitting area set across the entire surface; The first data processing unit acquires the first brightness data of the preset image under a positive viewing angle output by the first measurement unit, and generates first brightness compensation data based on the first brightness data to perform brightness compensation; including: The first data processing unit acquires the second sub-brightness data of each of the third luminous regions under a positive viewing angle, output by the first measurement unit; Obtain the second preset brightness value; Generate second sub-brightness compensation data based on the second preset brightness value and the second sub-brightness data, and perform brightness compensation; The second data processing unit acquires the image data of the preset image from the second measurement unit at a normal viewing angle, and generates pixel-level brightness compensation data based on the image data to perform pixel brightness compensation, including: The second data processing unit acquires the second sub-image data of the fourth luminous region output by the second measurement unit under a positive viewing angle; The second brightness difference between adjacent pixels in the fourth luminous region is obtained based on the second sub-image data; Obtain the second preset pixel brightness value; Second pixel-level brightness compensation data is generated based on the second brightness difference and the second preset pixel brightness value, and pixel brightness compensation is performed.

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