Testing method, device and equipment for grating laminating precision and storage medium

Abstract

The invention discloses a method, a device and equipment for testing the laminating precision of a grating and a storage medium. The testing method comprises the following steps: acquiring a first distance from a first mark point to a third mark point, a second distance from a second mark point to a fourth mark point and a preset alignment mark distance; determining an angular deviation according to the first distance, the second distance and a preset alignment mark distance; and when the angle deviation is smaller than a preset angle, determining that the laminating precision of the optical display equipment is qualified. According to the technical scheme, after the optical grating layer and the display screen are attached, the angle deviation between the optical grating layer and the display screen is calculated by means of the mark points on the optical grating layer and the display screen, when the angle deviation is smaller than the preset angle, it is judged that attachment of the optical display device is qualified, and then defective products with unqualified attachment are intercepted; the risk that defective products flow out is reduced, meanwhile, loss of resources such as manpower and materials in the follow-up process can be reduced, cost is saved, and the attaching yield is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of naked-eye 3D display screen detection, and particularly relates to a method, device, equipment and storage medium for testing the grating fitting accuracy. Background Art

[0002] The naked-eye 3D display technology enables users to perceive a three-dimensional stereoscopic effect from a two-dimensional plane picture or video with the naked eye without the aid of any external devices such as 3D glasses. The naked-eye 3D display technology involves attaching a slit grating or a lenticular grating to a liquid crystal display screen. Using the grating technology, the pixels covered under the grating are divided into the pixels viewed by the user's left eye and the pixels viewed by the user's right eye. When a person's left and right eyes view the screen, they will respectively see two groups of pixel points, thus generating a parallax, and the user can view an image with a 3D display effect.

[0003] In the production process of a grating-type naked-eye 3D display screen, there is always a certain deviation in the fitting position between the grating and the liquid crystal display screen, and the position deviation will affect the 3D display effect, especially the angular deviation. Therefore, the detection of the fitting accuracy is crucial. For the angular deviation, if measured under a microscope, due to the unclear edge of the grating, the cutting error of the edge of the liquid crystal display screen, and the manual point-taking error, the measurement result often has a large deviation. It is impossible to accurately judge the fitting deviation, thus unable to conduct effective quality control, and it is also easy to leave a subsequent process for the non-conforming fitting products, resulting in greater cost losses. Summary of the Invention

[0004] The present invention provides a method, device, equipment and storage medium for testing the grating fitting accuracy to solve the problem of inaccurate manual measurement of the fitting angle deviation between the grating layer and the display screen in the prior art.

[0005] According to the first aspect of the present invention, there is provided a method for testing the grating fitting accuracy, which is applied to an optical display device; the optical display device includes a grating layer and a display screen; the grating layer includes a first marking point and a second marking point; the display screen includes a third marking point and a fourth marking point;

[0006] The testing method includes:

[0007] Obtaining a first distance between the first marking point and the third marking point, a second distance between the second marking point and the fourth marking point, and a preset alignment marking distance;

[0008] Determining the angular deviation according to the first distance, the second distance, and the preset alignment marking distance;

[0009] When the angular deviation is less than a preset angle, it is determined that the fitting accuracy of the optical display device is qualified.

[0010] Optionally, the grating layer includes a first alignment pattern group and a second alignment pattern group; the first marking point is the center point of the first alignment pattern group; the second marking point is the center point of the second alignment pattern group;

[0011] The display screen includes a third alignment pattern group and a fourth alignment pattern group; the third marking point is the center point of the third alignment pattern group; the fourth marking point is the center point of the fourth alignment pattern group;

[0012] Obtaining a first distance between the first marking point and the third marking point and a second distance between the second marking point and the fourth marking point includes:

[0013] Obtaining the coordinates of all alignment patterns in the first alignment pattern group, the coordinates of all alignment patterns in the second alignment pattern group, the coordinates of all alignment patterns in the third alignment pattern group, and the coordinates of all alignment patterns in the fourth alignment pattern group;

[0014] Determining the coordinates of the first marking point according to the coordinates of all alignment patterns in the first alignment pattern group, determining the coordinates of the second marking point according to the coordinates of all alignment patterns in the second alignment pattern group, determining the coordinates of the third marking point according to the coordinates of all alignment patterns in the third alignment pattern group, and determining the coordinates of the fourth marking point according to the coordinates of all alignment patterns in the fourth alignment pattern group;

[0015] Determining the first distance according to the coordinates of the first marking point and the coordinates of the third marking point, and determining the second distance according to the coordinates of the second marking point and the coordinates of the fourth alignment marking point.

[0016] Optionally, the first distance Y1, the second distance Y2, the preset alignment marking distance L, and the angle deviation θ satisfy

[0017] Optionally, when the angle deviation is less than the preset angle, determining that the fitting accuracy of the optical display device is qualified includes:

[0018] When the angle deviation is less than the preset angle, obtaining the spectral splitting image of the optical display device;

[0019] When the spectral splitting image meets the preset spectral splitting standard, determining that the fitting accuracy of the optical display device is qualified.

[0020] Optionally, the preset spectral splitting standard includes the theoretical fringe number, the theoretical fringe size, and the theoretical fringe color;

[0021] When the spectral splitting image meets the preset spectral splitting standard, determining that the fitting accuracy of the optical display device is qualified includes:

[0022] Determining the actual fringe number, the actual fringe size, and the actual fringe color of the spectral splitting image according to the spectral splitting image;

[0023] When the actual number of stripes is the same as the theoretical number of stripes, the actual stripe size is the same as the theoretical stripe size, and the actual stripe color is the same as the theoretical stripe color, it is determined that the lamination accuracy of the optical display device is qualified.

[0024] Optionally, when the angle deviation is less than a preset angle, after obtaining the spectroscopic image of the optical display device, it further includes:

[0025] When the spectroscopic image does not meet the preset spectroscopic standard, it is determined that the grating layer is unqualified.

[0026] Optionally, before obtaining the preset alignment mark distance, it further includes:

[0027] Obtain the third distance between the first mark point and the second mark point and the fourth distance between the third mark point and the fourth mark point;

[0028] Determine the preset alignment mark distance according to the third distance and the fourth distance.

[0029] Optionally, determining the preset alignment mark distance according to the third distance and the fourth distance includes:

[0030] Judge whether the third distance and the fourth distance are the same;

[0031] When the third distance and the fourth distance are the same, determine the preset alignment mark distance according to the third distance.

[0032] Optionally, after judging whether the third distance and the fourth distance are the same, it further includes:

[0033] When the third distance and the fourth distance are different, determine the average distance according to the third distance and the fourth distance;

[0034] Determine the preset alignment mark distance according to the average distance.

[0035] Optionally, determining the preset alignment mark distance according to the third distance and the fourth distance includes:

[0036] Judge whether the third distance meets the preset lithography distance range and whether the fourth distance meets the preset lithography distance range;

[0037] When both the third distance and the fourth distance meet the preset lithography distance range, determine the preset alignment mark distance according to the third distance and the fourth distance.

[0038] Optionally, after determining the angle deviation according to the first distance, the second distance and the preset alignment mark distance, it further includes:

[0039] When the angle deviation is greater than or equal to the preset angle, it is determined that the lamination accuracy of the optical display device is unqualified.

[0040] Optionally, when the angle deviation is less than a preset angle, it is determined that the fitting accuracy of the optical display device is qualified, including:

[0041] When the angle deviation is less than the preset angle, obtain the actual crosstalk value of the optical display device;

[0042] When the actual crosstalk value is less than the preset crosstalk value, it is determined that the fitting accuracy of the optical display device is qualified.

[0043] According to a second aspect of the present invention, there is provided a test device for grating fitting accuracy, which is used to execute the test method for grating fitting accuracy. The test device for grating fitting accuracy includes:

[0044] A distance acquisition module, configured to acquire a first distance between a first marked point and a third marked point, a second distance between a second marked point and a fourth marked point, and a preset alignment mark distance;

[0045] An angle deviation calculation module, configured to determine an angle deviation according to the first distance, the second distance, and the preset alignment mark distance;

[0046] An accuracy judgment module, configured to determine that the fitting accuracy of the optical display device is qualified when the angle deviation is less than a preset angle.

[0047] According to a third aspect of the present invention, there is provided a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the test method for grating fitting accuracy is implemented.

[0048] According to a fourth aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the test method for grating fitting accuracy is implemented.

[0049] The technical solution of the present invention, after the grating layer and the display screen are fitted, by means of the marked points on the grating layer and the display screen, calculate the angle deviation between the grating layer and the display screen. When the angle deviation is less than the preset angle, it is determined that the fitting of the optical display device is qualified, thereby intercepting defective products with unqualified fitting, reducing the risk of defective products flowing out, and at the same time, it can also reduce the loss of resources such as manpower and materials in subsequent processes, save costs, and improve the fitting yield.

[0050] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0052] Figure 1 is a schematic diagram of the bonding of a grating layer and a display screen according to an embodiment of the present invention;

[0053] Figure 2 is a flowchart of a first method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0054] Figure 3 is a flowchart of a second method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0055] Figure 4 is a flowchart of a third method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0056] Figure 5 is a flowchart of a fourth method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0057] Figure 6 is a schematic diagram of a spectrogram according to an embodiment of the present invention;

[0058] Figure 7 is a schematic diagram of the structure of a shooting bench according to an embodiment of the present invention;

[0059] Figure 8 is a flowchart of a fifth method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0060] Figure 9 is a flowchart of a sixth method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0061] Figure 10 is a flowchart of a seventh method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0062] Figure 11 is a flowchart of an eighth method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0063] Figure 12 is a flowchart of a ninth method for testing the grating bonding accuracy according to an embodiment of the present invention;

[0064] Figure 13It is a flowchart of the tenth method for testing the grating bonding accuracy provided by an embodiment of the present invention;

[0065] Figure 14 It is a flowchart of the eleventh method for testing the grating bonding accuracy provided by an embodiment of the present invention;

[0066] Figure 15 It is a connection diagram of a testing device for the grating bonding accuracy provided by an embodiment of the present invention;

[0067] Figure 16 It is a schematic structural diagram of an electronic device applied to the method for testing the grating bonding accuracy provided by an embodiment of the present invention. Detailed implementation manners

[0068] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0069] 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 do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0070] Figure 1 It is a schematic diagram of the bonding of a grating layer and a display screen provided by an embodiment of the present invention. As Figure 1 shown, the method for testing the grating bonding accuracy is applied to an optical display device; the optical display device includes a grating layer 1 and a display screen 2; the grating layer 1 includes a first marking point 11 and a second marking point 12; the display screen 2 includes a third marking point 21 and a fourth marking point 22.

[0071] Among them, the optical display device may be a grating-type autostereoscopic 3D display screen 2. The optical display device is composed of a grating layer 1 and a display screen 2 attached together. The grating layer 1 divides the pixels of the covered display screen 2 into pixels viewed by the user's left eye and pixels viewed by the user's right eye, thereby generating parallax and forming an image with a 3D display effect. The main factor affecting the imaging effect is the deviation of the attachment angle. The purpose of the test method in the embodiment of the present invention is to detect the attachment accuracy of the grating layer 1 and the display screen 2, and thus achieve the purpose of screening defective products. Both the grating layer 1 and the display screen 2 are prepared with alignment patterns, and the purpose of the alignment patterns may be to align the grating layer 1 and the display screen 2 during attachment. The marking point may be a point obtained through the alignment pattern. The marking point may be the center point on a single alignment pattern or the center points of multiple alignment patterns. It can be understood that the alignment pattern can be set on the grating layer 1 and the display screen 2 through processes such as photolithography. The marking point determined by the alignment pattern may be a virtual marking point or an actually set marking point. The position of the marking point is determined by the alignment pattern, and the grating layer 1 includes a first marking point 11 and a second marking point 12, and the display screen 2 includes a third marking point 21 and a fourth marking point 22. When the grating layer 1 and the display screen 2 are completely attached with 100% accuracy, the alignment pattern on the grating layer 1 is aligned with the alignment pattern on the display screen 2, the first marking point 11 is aligned with the third marking point 21, and the second marking point 12 is aligned with the fourth marking point 22. However, in the actual operation process, it is inevitable that there is an angle deviation when the grating layer 1 and the display screen 2 are attached. Therefore, in the embodiment of the present invention, the grating attachment accuracy is tested after the grating layer 1 and the display screen 2 are attached. Figure 2 is a flowchart of the first grating attachment accuracy test method provided by the embodiment of the present invention. Combining Figure 1 and Figure 2 shown, the test method includes:

[0072] S10. Obtain a first distance between the first marking point and the third marking point, a second distance between the second marking point and the fourth marking point, and a preset alignment marking distance.

[0073] Among them, when there is a deviation in the fitting between the grating layer 1 and the display screen 2, misalignment may occur between the first marking point 11 and the third marking point 21 and / or between the second marking point 12 and the fourth marking point 22. When there is misalignment between the first marking point 11 and the third marking point 21, the first distance Y1 between the first marking point 11 and the third marking point 21 is not 0. When there is misalignment between the second marking point 12 and the fourth marking point 22, the second distance Y2 between the second marking point 12 and the fourth marking point 22 is not 0. It can be understood that there are various ways to obtain the first distance Y1 and the second distance Y2. For example, taking a top view image of the optical display device and measuring the distance between the first marking point 11 and the third marking point 21, and the distance between the second marking point 12 and the fourth marking point 22 on the top view image, or determining it through the coordinates of the first marking point 11, the second marking point 12, the third marking point 21, and the fourth marking point 22.

[0074] Among them, the preset alignment marking distance L can be the preset distance between the first marking point 11 and the second marking point 12 on the grating layer 1, and the preset distance between the third marking point 21 and the fourth marking point 22 on the display screen 2. In an ideal situation, the preset distance between the first marking point 11 and the second marking point 12 and the preset distance between the third marking point 21 and the fourth marking point 22 are the same and fixed.

[0075] S11. Determine the angular deviation according to the first distance, the second distance, and the preset alignment marking distance.

[0076] Among them, the angular deviation θ can be the included angle between the edge of the grating layer 1 and the edge of the display screen 2. When there is an angular deviation θ in the fitting between the grating layer 1 and the display screen 2, the angular deviation θ can be determined through the geometric relationship between the first distance Y1 between the first marking point 11 and the third marking point 21, the second distance Y2 between the second marking point 12 and the fourth marking point 22, and the preset alignment marking distance L.

[0077] In some embodiments, the first distance Y1, the second distance Y2, the preset alignment marking distance L, and the angular deviation θ satisfy

[0078] Specifically, as Figure 1 shown, when there is a deviation in the fitting between the grating layer 1 and the display screen 2, the edges of the grating layer 1 and the display screen 2 cannot completely coincide, and there is an angular deviation θ. The distance between the first marking point 11 and the third marking point 21, and the distance between the second marking point 12 and the fourth marking point 22 can be measured from the top view. According to the geometric relationship between the edge of the grating layer 1, the edge of the display screen 2, the first distance Y1, the second distance Y2, and the preset alignment marking distance L, Accordingly, the angular deviation θ can be determined by the first distance Y1, the second distance Y2, and the preset alignment mark distance L.

[0079] S12. When the angular deviation is less than the preset angle, it is determined that the fitting accuracy of the optical display device is qualified.

[0080] Among them, the preset angle can be the maximum angular deviation θ that can be tolerated for the fitting of the grating layer 1 and the display screen 2 set in advance. If the angular deviation θ is greater than or equal to the preset angle, there is a risk of poor display. After calculating the angular deviation θ, it is judged whether the angular deviation θ between the grating layer 1 and the display screen 2 is less than the preset angle. When the angular deviation θ is less than the preset angle, it means that the angular deviation θ of the fitting of the grating layer 1 and the display screen 2 is within the allowable range, and then it is determined that the fitting accuracy of the optical display device is qualified.

[0081] It can be understood that in the prior art, the angular deviation θ is obtained by measuring the included angle between the cutting edge of the display screen 2 and the edge of the grating structure. However, the processing accuracy of the cutting edge of the display screen 2 and the edge of the grating structure is unstable, resulting in a large measurement angle error, and thus the judgment of the fitting accuracy is not accurate. In the embodiment of the present invention, by means of the marking points on the grating layer 1 and the display screen 2, the distance between the first marking point 11 and the third marking point 21, and the distance between the second marking point 12 and the fourth marking point 22 are measured and calculated, and the angular deviation θ is calculated in combination with the preset alignment mark distance L, which improves the accuracy of the angular deviation θ, and further improves the judgment of the fitting accuracy.

[0082] Exemplarily, after the grating layer 1 and the display screen 2 are fitted, the first distance Y1 between the first marking point 11 and the third marking point 21, the second distance Y2 between the second marking point 12 and the fourth marking point 22, and the preset alignment mark distance L are obtained, and the angular deviation θ is calculated according to the first distance Y1, the second distance Y2, and the preset alignment mark distance L; when the angular deviation θ is less than 0.01°, it is judged that the optical display device is qualified. After actual detection, when the fitting angular deviation θ < 0.01°, the crosstalk value of the final finished product of the optical display device is also within the preset range.

[0083] The technical solution of the embodiment of the present invention, after the grating layer and the display screen are fitted, calculates the angular deviation between the grating layer and the display screen by means of the marking points on the grating layer and the display screen. When the angular deviation is less than the preset angle, it is judged that the fitting of the optical display device is qualified, which improves the imaging effect of the optical display device, intercepts the defective products with unqualified fitting, reduces the risk of the outflow of defective products, and at the same time can also reduce the loss of resources such as manpower and materials in the subsequent process, save costs, and improve the fitting yield.

[0084] On the basis of the above embodiment, Figure 3 is the flowchart of the second method for testing the grating fitting accuracy provided by the embodiment of the present invention. CombiningFigure 1 and Figure 3 As shown in Figure 3 , the grating layer 1 includes a first alignment pattern group 101 and a second alignment pattern group 102; the first marking point 11 is the center point of the first alignment pattern group 101; the second marking point 12 is the center point of the second alignment pattern group 102;

[0085] The display screen 2 includes a third alignment pattern group 103 and a fourth alignment pattern group 104; the third marking point 21 is the center point of the third alignment pattern group 103; the fourth marking point 22 is the center point of the fourth alignment pattern group 104.

[0086] Among them, the first alignment pattern group 101 may include at least one alignment pattern, the second alignment pattern group 102 may include at least one alignment pattern, the third alignment pattern group 103 may include at least one alignment pattern, and the fourth alignment pattern group 104 may include at least one alignment pattern. Since the purpose of the alignment pattern is to accurately fit the grating layer 1 and the display screen 2, the setting of the alignment pattern on the grating layer 1 should be consistent with the setting on the display screen 2. The first marking point 11 can be determined according to the positions of the alignment patterns in the first alignment pattern group 101, the second marking point 12 can be determined according to the positions of the alignment patterns in the second alignment pattern group 102, the third marking point 21 can be determined according to the positions of the alignment patterns in the third alignment pattern group 103, and the fourth marking point 22 can be determined according to the positions of the alignment patterns in the fourth alignment pattern group 104.

[0087] The test method includes:

[0088] S20. Obtain the coordinates of all alignment patterns in the first alignment pattern group, the coordinates of all alignment patterns in the second alignment pattern group, the coordinates of all alignment patterns in the third alignment pattern group, the coordinates of all alignment patterns in the fourth alignment pattern group, and a preset alignment mark distance.

[0089] Among them, the coordinates of the first alignment pattern group 101, the second alignment pattern group 102, the third alignment pattern group 103, and the fourth alignment pattern group 104 can be obtained respectively.

[0090] S21. Determine the coordinates of the first marking point according to the coordinates of all alignment patterns in the first alignment pattern group, determine the coordinates of the second marking point according to the coordinates of all alignment patterns in the second alignment pattern group, determine the coordinates of the third marking point according to the coordinates of all alignment patterns in the third alignment pattern group, and determine the coordinates of the fourth marking point according to the coordinates of all alignment patterns in the fourth alignment pattern group.

[0091] Among them, the coordinates of the corresponding marking points are determined according to the coordinates of the first pair of alignment graphic groups 101, the second pair of alignment graphic groups 102, the third pair of alignment graphic groups 103, and the fourth pair of alignment graphic groups 104 respectively. The coordinates of the marking points are the central points of the coordinates of the corresponding graphic groups. For example, if each pair of alignment graphic groups includes one alignment graphic, the corresponding marking point is the central point of the alignment graphic. Or if each pair of alignment graphic groups includes two alignment graphics, the corresponding marking point is the central point between the two alignment graphics.

[0092] S22. Determine the first distance according to the coordinates of the first marking point and the coordinates of the third marking point, and determine the second distance according to the coordinates of the second marking point and the coordinates of the fourth pair of alignment marking points.

[0093] Among them, after determining the coordinates of each marking point, the first distance Y1 can be calculated according to the coordinates of the first marking point 11 and the coordinates of the third marking point 21, and the second distance Y2 can be calculated according to the coordinates of the second marking point 12 and the coordinates of the fourth pair of alignment marking points. For example, if the coordinates of the first marking point 11 are (x1, y1) and the coordinates of the third marking point 21 are (x3, y3), then the corresponding Y1 = |y3 - y1|; if the coordinates of the second marking point 11 are (x2, y2) and the coordinates of the third marking point 21 are (x4, y4), then the corresponding Y2 = |y4 - y2|.

[0094] S23. Determine the angular deviation according to the first distance, the second distance, and the preset alignment marking distance.

[0095] S24. When the angular deviation is less than the preset angle, it is determined that the fitting accuracy of the optical display device is qualified.

[0096] It can be understood that in the embodiments of the present invention, no matter how many alignment graphics the grating layer 1 and the display screen 2 include, finally only two marking points will be calculated, and the two marking points on the grating layer 1 correspond to the two marking points on the display screen 2, which is convenient for accurately calculating the angular deviation θ.

[0097] Exemplarily, each of the first pair of alignment graphic groups 101, the second pair of alignment graphic groups 102, the third pair of alignment graphic groups 103, and the fourth pair of alignment graphic groups 104 includes one alignment graphic. The coordinates of the central points of each alignment graphic are determined respectively, that is, the coordinates of the first marking point 11, the second marking point 12, the third marking point 21, and the fourth marking point 22 are determined.

[0098] Exemplarily, the first pair of alignment patterns group 101, the second pair of alignment patterns group 102, the third pair of alignment patterns group 103, and the fourth pair of alignment patterns group 104 each include two alignment patterns. The coordinates of each alignment pattern are determined respectively, and the coordinates of the first marker point 11 are determined according to the coordinates of the alignment patterns in the first pair of alignment patterns group 101, the coordinates of the second marker point 12 are determined according to the coordinates of all the alignment patterns in the second pair of alignment patterns group 102, the coordinates of the third marker point 21 are determined according to the coordinates of all the alignment patterns in the third pair of alignment patterns group 103, and the coordinates of the fourth marker point 22 are determined according to the coordinates of all the alignment patterns in the fourth pair of alignment patterns group 104.

[0099] The technical solution of the embodiment of the present invention determines the positions of the first marker point, the second marker point, the third marker point, and the fourth marker point according to the coordinates of the alignment patterns on the grating layer and the display screen, and then calculates the first distance and the second distance. The technical solution of the embodiment of the present invention has no limitation on the number of alignment patterns, has a wide application range and high accuracy.

[0100] Based on the above embodiments, Figure 4 is a flowchart of a third method for testing the grating lamination accuracy provided by the embodiment of the present invention. Combining Figure 1 and Figure 4 as shown, the testing method includes:

[0101] S30. Obtain the first distance between the first marker point and the third marker point, the second distance between the second marker point and the fourth marker point, and the preset alignment marker distance.

[0102] S31. Determine the angular deviation according to the first distance, the second distance, and the preset alignment marker distance.

[0103] S32. When the angular deviation is less than the preset angle, obtain the spectroscopic image of the optical display device.

[0104] Among them, the spectroscopic image can be an image obtained by controlling two pixels with different colors on the display screen 2, and the two pixels with different colors pass through the grating layer 1. Two stripe colors on the spectroscopic image are arranged periodically and alternately. By obtaining the spectroscopic image, the spectroscopic effect of the laminated grating layer 1 and the display screen 2 can be further judged, and further the purpose of further screening defective products can be achieved.

[0105] S33. When the spectroscopic image meets the preset spectroscopic standard, determine that the lamination accuracy of the optical display device is qualified.

[0106] Among them, the preset spectral splitting standard can be the standard image formed after spectral splitting when the grating layer 1 and the display screen 2 are attached and aligned. Compare the spectral splitting image with the preset spectral splitting standard. When the spectral splitting image meets the preset spectral splitting standard, it is determined that the spectral splitting of the optical display device is qualified, and then it is determined that the attachment accuracy of the optical display device is qualified, and the subsequent process flow can be entered.

[0107] It can be understood that in the embodiment of the present invention, after the grating layer 1 and the display screen 2 are attached, the calculation and determination of the angular deviation θ are first performed. When the angular deviation θ is less than the preset angle, the determination of the spectral splitting image is performed, so that the determination of the angular deviation θ precedes the determination of the spectral splitting image. This is because compared with the determination of the spectral splitting image, the numerical determination of the angular deviation θ is more objective. Using the numerical value of the angular deviation θ to pre-screen some defective products makes the test method in the embodiment of the present invention more accurate.

[0108] Exemplarily, after the grating layer 1 and the display screen 2 are attached, first calculate the angular deviation θ of the attachment of the grating layer 1 and the display screen 2. When the angular deviation θ is less than the preset angle of 0.01°, continue to obtain the spectral splitting image of the optical display device and determine whether the spectral splitting image meets the preset spectral splitting standard. When the spectral splitting image meets the preset spectral splitting standard, it is determined that the optical display device is qualified. After actual detection, when the attachment angular deviation θ < 0.01° and the spectral splitting image is qualified, the crosstalk value of the final product < 1.5%, achieving the purpose of screening defective products.

[0109] The technical solution of the embodiment of the present invention further screens the spectral splitting of the optical display device by adding the determination of the spectral splitting image after the determination of the angular deviation, and further can screen defective products with poor attachment, reduce the risk of defective products flowing out, and improve the yield of shipped products.

[0110] On the basis of the above embodiment, Figure 5 is a flowchart of the fourth method for testing the grating attachment accuracy provided by the embodiment of the present invention. Combining Figure 1 and Figure 5 as shown, the preset spectral splitting standard includes the theoretical number of stripes, the theoretical stripe size, and the theoretical stripe color.

[0111] This test method includes:

[0112] S40. Obtain the first distance between the first marking point and the third marking point, the second distance between the second marking point and the fourth marking point, and the preset alignment marking distance.

[0113] S41. Determine the angular deviation according to the first distance, the second distance, and the preset alignment marking distance.

[0114] S42. When the angular deviation is less than the preset angle, obtain the spectral splitting image of the optical display device.

[0115] S43. Determine the actual number of fringes, actual fringe size, and actual fringe color of the spectroscopic image based on the spectroscopic image.

[0116] After obtaining the spectroscopic image, the actual number of fringes, actual fringe size, and actual fringe color on the image can be obtained according to the spectroscopic image. The actual number of fringes can be the number of all fringe images on the spectroscopic image, the actual fringe size can be the size of each fringe image, and the actual fringe color can be the color of each fringe image.

[0117] For example, Figure 6 is a schematic diagram of a spectroscopic image provided by an embodiment of the present invention. As Figure 6 shown, the spectroscopic image includes periodically alternating red fringe images and blue fringe images. The number of all fringe images is 7, and the size of each fringe image is the same and is 2 mm.

[0118] S44. When the actual number of fringes is the same as the theoretical number of fringes, the actual fringe size is the same as the theoretical fringe size, and the actual fringe color is the same as the theoretical fringe color, it is determined that the fitting accuracy of the optical display device is qualified.

[0119] Among them, in an ideal state, the actual number of fringes in the spectroscopic image is the same as the theoretical number of fringes in the preset spectroscopic standard, the actual fringe color in the spectroscopic image is the same as the theoretical fringe color in the preset spectroscopic standard, and the actual fringe size in the spectroscopic image is the same as the theoretical fringe size in the preset spectroscopic standard.

[0120] Exemplarily, Figure 7 is a schematic structural diagram of a shooting bench provided by an embodiment of the present invention. Combining Figure 1 , Figure 6 and Figure 7 shown, in the actual measurement process, the shooting bench 3 can be used to obtain the spectroscopic image of the optical display device. The shooting bench 3 includes a shooting bracket 31, a carrying platform 32, and a camera 33. The camera 33 can adjust the shooting height by sliding on the shooting bracket 31. The optical display device is fixed on the carrying platform 32 and the display screen 2 is set to display the spectrogram. The focal length of the camera 33 is adjusted to shoot a clear spectroscopic image. Compare the actual number of fringes, actual fringe size, and actual fringe color of the spectroscopic image with the theoretical number of fringes, theoretical fringe size, and theoretical fringe color of the preset spectroscopic standard. When the actual fringe color and the theoretical fringe color are also periodically alternating red fringe images and blue fringe images, the actual number of fringes is the same as the theoretical number of fringes, and the actual fringe size and the theoretical fringe size are both within the range of 2-3 mm, at this time it is determined that the fitting accuracy of the optical display device is qualified.

[0121] The technical solution of the embodiment of the present invention determines the actual number of fringes, the actual fringe size, and the actual fringe color of the spectroscopic image, and compares the actual number of fringes, the actual fringe size, and the actual fringe color with the preset spectroscopic standard, ensuring that the spectroscopic image is uniform and clear, playing a role in further screening defective products and improving the outgoing product yield.

[0122] Based on the above embodiment, Figure 8 is a flowchart of the fifth method for testing the grating bonding accuracy provided by the embodiment of the present invention. Combining Figure 1 、 Figure 6 and Figure 8 as shown, the testing method includes:

[0123] S50. Obtain the first distance between the first marked point and the third marked point, the second distance between the second marked point and the fourth marked point, and the preset alignment mark distance.

[0124] S51. Determine the angular deviation according to the first distance, the second distance, and the preset alignment mark distance.

[0125] S52. When the angular deviation is less than the preset angle, obtain the spectroscopic image of the optical display device.

[0126] S53. When the spectroscopic image meets the preset spectroscopic standard, determine that the bonding accuracy of the optical display device is qualified.

[0127] S54. When the spectroscopic image does not meet the preset spectroscopic standard, determine that the grating layer is unqualified.

[0128] Among them, when the angular deviation θ between the grating layer 1 and the display screen 2 is less than the preset angle but the spectroscopic image does not meet the preset spectroscopic standard, it indicates that there may be problems with the surface profile processing of the grating layer 1 itself or the surface profile of the grating layer 1 has changed due to external forces during the bonding and other assembly processes, resulting in the unqualified grating layer 1. At this time, the unqualified products of the grating layer 1 are also removed.

[0129] In some embodiments, the surface profile test can be continued for the unqualified products of the grating layer 1 to find out the reasons for the unqualified grating layer 1, and then adjust the processing or bonding and other process operation methods of the grating layer 1 to reduce defective products and improve the bonding yield.

[0130] The technical solution of the embodiment of the present invention determines that the grating layer of the optical display device is unqualified when it is determined that the spectroscopic image does not meet the preset spectroscopic standard, and promptly removes defective products, reducing the risk of defective products flowing out.

[0131] Based on the above embodiment, Figure 9 is a flowchart of the sixth method for testing the grating bonding accuracy provided by the embodiment of the present invention. Combining Figure 1 and Figure 9As shown, the test method includes:

[0132] S60. Obtain a third distance from the first marking point to the second marking point and a fourth distance from the third marking point to the fourth marking point.

[0133] Among them, the first marking point 11 and the second marking point 12 of the grating layer 1, and the third marking point 21 and the fourth marking point 22 of the display screen 2 can be marked by photolithography. However, even photolithography has accuracy problems. Therefore, before calculating the angular deviation θ, the distance between the first marking point 11 and the second marking point 12 and the distance between the third marking point 21 and the fourth marking point 22 are measured.

[0134] It can be understood that the measurement of the third distance Y3 and the fourth distance Y4 can be performed before the grating layer 1 and the display screen 2 are bonded, or after the grating layer 1 and the display screen 2 are bonded. The embodiments of the present invention do not limit this.

[0135] S61. Determine a preset alignment marking distance according to the third distance and the fourth distance.

[0136] S62. Obtain a first distance from the first marking point to the third marking point, a second distance from the second marking point to the fourth marking point, and the preset alignment marking distance.

[0137] Among them, the preset alignment marking distance L is determined by the actually measured third distance Y3 and fourth distance Y4. Since photolithography will also cause a certain degree of error, determining the preset alignment marking distance L by actually measuring the third distance Y3 and the fourth distance Y4 makes the angular deviation θ more accurate and improves the accuracy of determining the angular deviation θ.

[0138] S63. Determine the angular deviation according to the first distance, the second distance, and the preset alignment marking distance.

[0139] S64. When the angular deviation is less than the preset angle, determine that the bonding accuracy of the optical display device is qualified.

[0140] The technical solution of the embodiments of the present invention measures the third distance between the first marking point and the second marking point and the fourth distance between the third marking point and the fourth marking point, and determines the preset alignment marking distance according to the actually measured third distance and fourth distance, avoiding the error caused by the photolithography marking points and improving the accuracy of calculating the angular deviation.

[0141] Based on the above embodiments, Figure 10 is a flowchart of the seventh test method for the grating bonding accuracy provided by the embodiments of the present invention. Combining Figure 1 and Figure 10 As shown, the test method includes:

[0142] S70. Obtain the third distance from the first marking point to the second marking point and the fourth distance from the third marking point to the fourth marking point.

[0143] S71. Determine whether the third distance and the fourth distance are the same.

[0144] Among them, in an ideal situation, the third distance Y3 and the fourth distance Y4 are the same. However, since the first marking point 11, the second marking point 12, the third marking point 21, and the fourth marking point 22 can be obtained through a photolithography process, considering the error of the photolithography process, first determine whether the third distance Y3 and the fourth distance Y4 are the same, and then it can be determined whether there is a photolithography error.

[0145] S72. When the third distance and the fourth distance are the same, determine the preset alignment marking distance according to the third distance.

[0146] Among them, when the third distance Y3 and the fourth distance Y4 are the same, it indicates that there is no photolithography error, and the third distance Y3 is used as the preset alignment marking distance L.

[0147] S73. Obtain the first distance from the first marking point to the third marking point and the second distance from the second marking point to the fourth marking point.

[0148] S74. Determine the angular deviation according to the first distance, the second distance, and the preset alignment marking distance.

[0149] S75. When the angular deviation is less than the preset angle, determine that the fitting accuracy of the optical display device is qualified.

[0150] The technical solution of the embodiment of the present invention adds a determination of whether the third distance and the fourth distance are the same after obtaining the third distance and the fourth distance, and then takes the photolithography error into account in the preset alignment marking distance. When the third distance and the fourth distance are the same, it is determined that there is no photolithography error, and the third distance is used as the preset alignment marking distance, ensuring the accuracy of the preset alignment marking distance.

[0151] On the basis of the above embodiment, Figure 11 is a flowchart of the eighth method for testing the grating fitting accuracy provided by the embodiment of the present invention. Combining Figure 1 and Figure 11 as shown, the testing method includes:

[0152] S80. Obtain the third distance from the first marking point to the second marking point and the fourth distance from the third marking point to the fourth marking point.

[0153] S81. Determine whether the third distance and the fourth distance are the same.

[0154] S82. When the third distance and the fourth distance are the same, determine the preset alignment marking distance according to the third distance.

[0155] S83. When the third distance and the fourth distance are different, determine the average distance according to the third distance and the fourth distance.

[0156] S84. Determine the preset alignment mark distance according to the average distance.

[0157] Among them, when the third distance Y3 and the fourth distance Y4 are different, it indicates that there may be a lithography error at the marking points. Therefore, determine the average distance between the two according to the third distance Y3 and the fourth distance Y4, and use the average distance as the preset alignment mark distance L to reduce the uncertainty caused by the lithography error and ensure the accuracy of the angular deviation θ.

[0158] S85. Obtain the first distance from the first marking point to the third marking point and the second distance from the second marking point to the fourth marking point.

[0159] S86. Determine the angular deviation according to the first distance, the second distance and the preset alignment mark distance.

[0160] S87. When the angular deviation is less than the preset angle, determine that the fitting accuracy of the optical display device is qualified.

[0161] Based on the above embodiments, Figure 12 is the flowchart of the ninth method for testing the grating fitting accuracy provided by the embodiment of the present invention. Combining Figure 1 and Figure 12 as shown, the testing method includes:

[0162] S90. Obtain the third distance from the first marking point to the second marking point and the fourth distance from the third marking point to the fourth marking point.

[0163] S91. Judge whether the third distance meets the preset lithography distance range and whether the fourth distance meets the preset lithography distance range.

[0164] Among them, the preset lithography distance range can be the standard distance range between the first marking point 11 and the second marking point 12, and also the standard distance range between the third marking point 21 and the fourth marking point 22. After obtaining the third distance Y3 and the fourth distance Y4, judge whether the third distance Y3 and the fourth distance Y4 meet the preset lithography distance range respectively, and then judge whether the positions of the first marking point 11 and the second marking point 12 are unqualified due to lithography errors, and whether the positions of the third marking point 21 and the fourth marking point 22 are unqualified due to lithography errors.

[0165] S92. When both the third distance and the fourth distance meet the preset lithography distance range, determine the preset alignment mark distance according to the third distance and the fourth distance.

[0166] Among them, when both the third distance Y3 and the fourth distance Y4 satisfy the preset lithography distance range, it indicates that both the third distance Y3 and the fourth distance Y4 are within the lithography error range, thereby ensuring the accuracy of the preset alignment mark distance L.

[0167] S93. Obtain the first distance from the first mark point to the third mark point, the second distance from the second mark point to the fourth mark point, and the preset alignment mark distance.

[0168] S94. Determine the angular deviation based on the first distance, the second distance, and the preset alignment mark distance.

[0169] S95. When the angular deviation is less than the preset angle, determine that the fitting accuracy of the optical display device is qualified.

[0170] Exemplarily, in the actual operation process, the third distance Y3 of the grating layer 1 and the fourth distance Y4 of the display screen 2 are measured and judged. When the errors of the third distance Y3 and / or the fourth distance Y4 deviate too much from the preset lithography distance range, for example, when the error is within the range of 10um to 20um, subsequent measurements and detections need to be carried out for each grating layer 1 and display screen 2. When the error is greater than 20um, the grating layer 1 or the display screen 2 is disposed of poorly and the lithography processing link is optimized to ensure the alignment accuracy.

[0171] The technical solution of the embodiment of the present invention determines whether the third distance and the fourth distance meet the preset lithography distance range before calculating the angular deviation, and determines the preset alignment mark distance when ensuring that both the third distance and the fourth distance meet the lithography error, improving the accuracy of fitting and alignment, and at the same time making the calculation of the angular deviation more accurate.

[0172] On the basis of the above embodiment, Figure 13 is a flowchart of the tenth method for testing the grating fitting accuracy provided by the embodiment of the present invention. As shown in combination with Figure 1 and Figure 13 shown, this test method includes:

[0173] S101. Obtain the first distance from the first mark point to the third mark point, the second distance from the second mark point to the fourth mark point, and the preset alignment mark distance.

[0174] S102. Determine the angular deviation based on the first distance, the second distance, and the preset alignment mark distance.

[0175] S103. When the angular deviation is less than the preset angle, determine that the fitting accuracy of the optical display device is qualified.

[0176] S104. When the angular deviation is greater than or equal to the preset angle, determine that the fitting accuracy of the optical display device is unqualified.

[0177] Among them, when the angle deviation θ is greater than or equal to the preset angle, it indicates that the fitting angle deviation θ between the grating layer 1 and the display screen 2 is too large at this time, which will affect the normal operation of the finished product. Therefore, it is determined that the optical display device is unqualified for defective disposal to prevent defective products from flowing out.

[0178] Based on the above embodiments, Figure 14 is a flowchart of the eleventh method for testing the grating fitting accuracy provided by the embodiments of the present invention. Combining Figure 1 and Figure 14 as shown, the testing method includes:

[0179] S111. Obtain the first distance between the first marking point and the third marking point, the second distance between the second marking point and the fourth marking point, and the preset alignment marking distance.

[0180] S112. Determine the angle deviation according to the first distance, the second distance, and the preset alignment marking distance.

[0181] S113. When the angle deviation is less than the preset angle, obtain the actual crosstalk value of the optical display device.

[0182] Among them, after the angle deviation θ is determined, the detection of the actual crosstalk value of the optical display device can be added. Among them, the actual crosstalk value can be the interference degree between the left and right eye images of the current optical display device. The lower the actual crosstalk value, the better the 3D display effect of the optical display device.

[0183] S114. When the actual crosstalk value is less than the preset crosstalk value, determine that the fitting accuracy of the optical display device is qualified.

[0184] Among them, the fitting accuracy of the grating layer 1 affects the actual crosstalk value of the optical display device to a certain extent. By comparing the angle deviation θ with the preset angle, some defective products can be screened out. On this basis, obtain the actual crosstalk value of the optical display device and determine whether the actual crosstalk value is less than the preset crosstalk value. When the actual crosstalk value is less than the preset crosstalk value, it indicates that the fitting accuracy of the optical display device is qualified, thereby achieving the purpose of further screening defective products and improving the shipping quality of the product.

[0185] The technical solution of the embodiments of the present invention further improves the screening ability of defective products, reduces the risk of defective products flowing out, and improves the quality of the final finished product by continuing to obtain the actual crosstalk value of the optical display device after screening the angle deviation and combining the preset crosstalk value for crosstalk value screening.

[0186] Based on the same inventive concept, Figure 15 is a connection diagram of a testing device for grating fitting accuracy provided by the embodiments of the present invention. Combining Figure 1 and Figure 15As shown in the figure, an embodiment of the present invention further provides a test device for the grating lamination accuracy, which is used to execute the test method for the grating lamination accuracy. The test device for the grating lamination accuracy includes:

[0187] A distance acquisition module 200, configured to acquire a first distance Y1 between a first marking point 11 and a third marking point 21, a second distance Y2 between a second marking point 12 and a fourth marking point 22, and a preset alignment marking distance L.

[0188] An angle deviation calculation module 210, configured to determine an angle deviation θ according to the first distance Y1, the second distance Y2, and the preset alignment marking distance L.

[0189] An accuracy judgment module 220, configured to determine that the lamination accuracy of the optical display device is qualified when the angle deviation θ is less than a preset angle.

[0190] Specifically, first, the distance acquisition module 200 acquires the first distance Y1 between the first marking point 11 and the third marking point 21, the second distance Y2 between the second marking point 12 and the fourth marking point 22, and the preset alignment marking distance L. Then, the angle deviation calculation module 210 determines the angle deviation θ according to the first distance Y1, the second distance Y2, and the preset alignment marking distance L. Then, the accuracy judgment module 220 judges that when the angle deviation θ is less than the preset angle, it is determined that the lamination accuracy of the optical display device is qualified.

[0191] The technical solution of the embodiment of the present invention, by using the distance acquisition module, the angle deviation calculation module, and the accuracy judgment module, calculates the angle deviation between the grating layer and the display screen by means of the marking points on the grating layer and the display screen after the grating layer and the display screen are laminated. When the angle deviation is less than the preset angle, it is judged that the lamination of the optical display device is qualified, thereby intercepting defective products with unqualified lamination, reducing the risk of defective products flowing out, and at the same time, it can also reduce the loss of resources such as manpower and materials in the subsequent process, save costs, and improve the lamination yield.

[0192] Based on the same inventive concept, an embodiment of the present invention further provides a computer device, Figure 16 which is a schematic structural diagram of an electronic device applied to the test method for the grating lamination accuracy according to an embodiment of the present invention. As Figure 16 shown, it includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the test method for the grating lamination accuracy.

[0193] Among them, the electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the invention described and / or claimed herein.

[0194] As Figure 16 shown, the electronic device 50 includes at least one processor 51, and a memory communicatively connected to the at least one processor 51, such as a read-only memory (ROM) 52, a random access memory (RAM) 53, etc. The memory stores a computer program executable by the at least one processor. The processor 51 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 52 or the computer program loaded from the storage unit 58 into the random access memory (RAM) 53. In the RAM 53, various programs and data required for the operation of the electronic device 50 can also be stored. The processor 51, the ROM 52, and the RAM 53 are connected to each other through a bus 54. An input / output (I / O) interface 55 is also connected to the bus 54.

[0195] Multiple components in the electronic device 50 are connected to the I / O interface 55, including: an input unit 56, such as a keyboard, a mouse, etc.; an output unit 57, such as various types of displays, speakers, etc.; a storage unit 58, such as a disk, an optical disc, etc.; and a communication unit 59, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 59 allows the electronic device 50 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0196] The processor 51 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 51 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 51 executes the various methods and processes described above, such as the test method applied to the grating fitting accuracy.

[0197] Based on the same inventive concept, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the test method for grating fitting accuracy.

[0198] Of course, the computer-executable instructions of a computer-readable storage medium provided by an embodiment of the present invention are not limited to the method operations described above, and can also execute relevant operations in the method for testing the grating bonding accuracy provided by any embodiment of the present invention. Continuing to refer to Figure 16 As shown, it is tangibly included in a computer-readable storage medium, such as storage unit 58. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 50 via the ROM 52 and / or the communication unit 59. When the computer program is loaded into the RAM 53 and executed by the processor 51, one or more steps of the method for testing the grating bonding accuracy described above can be executed. Alternatively, in other embodiments, the processor 51 can be configured to execute the method for testing the grating bonding accuracy by any other suitable means (e.g., by means of firmware).

[0199] The various embodiments of the systems and techniques described above in this document can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, the programmable processor can be a dedicated or general-purpose programmable processor, and can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0200] In the context of the embodiments of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of machine-readable storage media would include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0201] It should be understood that the various forms of processes shown above can be used, with steps reordered, added or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0202] The above specific embodiments do not constitute a limitation on the protection scope of the present 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 principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for testing grating lamination accuracy, characterized in that: Applied in optical display devices; The optical display device comprises a grating layer and a display screen; the grating layer comprises a first marking point and a second marking point; the display screen comprises a third marking point and a fourth marking point; The test method includes: Acquire a first distance between the first marking point and the third marking point, a second distance between the second marking point and the fourth marking point, and a preset alignment marking distance; Determine an angle deviation according to the first distance, the second distance and the preset alignment mark distance; When the angle deviation is less than a preset angle, it is determined that the optical display device has a qualified bonding accuracy.

2. The testing method according to claim 1, characterized in that: The grating layer includes a first alignment pattern group and a second alignment pattern group; the first marking point is the center point of the first alignment pattern group; The second marking point is the center point of the second alignment pattern group; The display screen includes a third alignment pattern group and a fourth alignment pattern group; The third marking point is the center point of the third alignment pattern group; The fourth marking point is the center point of the fourth alignment pattern group; Acquiring a first distance between the first marking point and the third marking point and a second distance between the second marking point and the fourth marking point includes: Acquire the coordinates of all alignment patterns in the first alignment pattern group, the coordinates of all alignment patterns in the second alignment pattern group, the coordinates of all alignment patterns in the third alignment pattern group, and the coordinates of all alignment patterns in the fourth alignment pattern group; Determine the coordinates of the first mark point according to the coordinates of all the alignment patterns in the first alignment pattern group, determine the coordinates of the second mark point according to the coordinates of all the alignment patterns in the second alignment pattern group, determine the coordinates of the third mark point according to the coordinates of all the alignment patterns in the third alignment pattern group, and determine the coordinates of the fourth mark point according to the coordinates of all the alignment patterns in the fourth alignment pattern group; The first distance is determined according to the coordinates of the first marking point and the coordinates of the third marking point, and the second distance is determined according to the coordinates of the second marking point and the coordinates of the fourth alignment marking point.

3. The testing method according to claim 1, characterized in that: The first distance Y1, the second distance Y2, the preset alignment mark distance L and the angle deviation θ satisfy 4. The testing method according to claim 1, characterized in that: When the angle deviation is less than a preset angle, determining that the optical display device has a qualified bonding accuracy includes: When the angle deviation is less than a preset angle, acquiring a spectroscopic image of the optical display device; When the spectroscopic image meets the preset spectroscopic standard, it is determined that the optical display device has a qualified bonding accuracy.

5. The testing method according to claim 4, characterized in that: The preset light splitting standard includes theoretical fringe quantity, theoretical fringe size and theoretical fringe color; When the spectroscopic image meets the preset spectroscopic standard, determining that the optical display device has qualified bonding accuracy includes: Determine the actual number of stripes, actual stripe size and actual stripe color of the spectroscopic image according to the spectroscopic image; When the actual number of stripes is the same as the theoretical number of stripes, the actual stripe size is the same as the theoretical stripe size, and the actual stripe color is the same as the theoretical stripe color, it is determined that the optical display device has a qualified bonding accuracy.

6. The testing method according to claim 4, characterized in that: When the angle deviation is less than a preset angle, after acquiring the spectroscopic image of the optical display device, the method further includes: When the spectroscopic image does not meet the preset spectroscopic standard, it is determined that the grating layer is unqualified.

7. The testing method according to claim 1, characterized in that: Before obtaining the preset alignment mark distance, it also includes: Acquire a third distance between the first marking point and the second marking point and a fourth distance between the third marking point and the fourth marking point; A preset alignment mark distance is determined according to the third distance and the fourth distance.

8. The testing method according to claim 7, characterized in that: Determining a preset alignment mark distance according to the third distance and the fourth distance includes: determining whether the third distance is the same as the fourth distance; When the third distance is the same as the fourth distance, a preset alignment mark distance is determined according to the third distance.

9. The testing method according to claim 8, characterized in that: After determining whether the third distance and the fourth distance are the same, the method further includes: When the third distance and the fourth distance are different, determining an average distance according to the third distance and the fourth distance; A preset alignment mark distance is determined according to the average distance.

10. The testing method according to claim 7, characterized in that: Determining a preset alignment mark distance according to the third distance and the fourth distance includes: Determine whether the third distance satisfies a preset photolithography distance range, and whether the fourth distance satisfies the preset photolithography distance range; When the third distance and the fourth distance both satisfy the preset photolithography distance range, a preset alignment mark distance is determined according to the third distance and the fourth distance.

11. The testing method according to claim 1, characterized in that: After determining the angle deviation according to the first distance, the second distance and the preset alignment mark distance, the method further includes: When the angle deviation is greater than or equal to the preset angle, it is determined that the fitting accuracy of the optical display device is unqualified.

12. The testing method according to claim 1, characterized in that: When the angle deviation is less than a preset angle, determining that the optical display device has a qualified bonding accuracy includes: When the angle deviation is less than a preset angle, obtaining an actual crosstalk value of the optical display device; When the actual crosstalk value is less than the preset crosstalk value, it is determined that the optical display device has a qualified bonding accuracy.

13. A grating lamination accuracy testing device, characterized in that: A method for testing the grating fitting accuracy according to any one of claims 1 to 12, wherein the testing device for the grating fitting accuracy comprises: A distance acquisition module, used to acquire a first distance between the first marking point and the third marking point, a second distance between the second marking point and the fourth marking point, and a preset alignment marking distance; An angle deviation calculation module, used to determine the angle deviation according to the first distance, the second distance and the preset alignment mark distance; The accuracy judgment module is used to determine that the optical display device has qualified fitting accuracy when the angle deviation is less than a preset angle.

14. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the testing method according to any one of claims 1 to 12 is implemented.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the testing method according to any one of claims 1 to 12 is implemented.

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