A multi-block crosstalk test method

Abstract

The present invention provides a multi-block crosstalk test method, comprising the following steps: A. Selecting a background base plate: preparing at least three groups of pure-color background base plates of the same specification; B. Selecting blocks to be tested: preparing at least two groups of pure-color blocks to be tested of the same specification, respectively named as color block a and color block b; C. Performing a traditional crosstalk test; D. Performing a multi-block crosstalk test; E. Comparative analysis: performing numerical comparison on the test results of step C and step D, obtaining the error size, and recording the time used for the two test processes, and finally comparing and obtaining the best solution. In the present invention, by placing white blocks, black blocks, red blocks, green blocks and other color blocks in the form of year-on-year scaling on the same 128 pure gray background base plate, it is possible to simultaneously observe whether different color blocks have an impact on the gray screen. Compared with the traditional crosstalk test method, the multi-block crosstalk test method does not need to frequently switch different screens for detection, effectively reducing the screen switching frequency and greatly improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen detection, and more particularly, to a multi-block crosstalk test method. Background Art

[0002] Currently, in the production lines of display screens of various devices, test methods such as SNR and crossTalk are generally used to test parameters such as the brightness and backlight effect of the device display screen. Only those with test results within a predetermined value range can be determined as qualified products and enter the next production process.

[0003] A prior Chinese patent discloses a method for evaluating the brightness measurement accuracy of a DeMura device, with the authorization announcement number CN108831358B and the publication date August 11, 2020. This patented technology generates a noisy image by adding random numbers to the original grayscale image, and obtains a measurement value corresponding to the added random number from the noisy image displayed by the DeMura device. The brightness measurement accuracy of the Demura device is evaluated based on the correlation between this measurement value and the originally added random number, and the brightness extraction performance of the Demura device is measured. This method for evaluating the brightness data measurement accuracy of the DeMura device can obtain the deviation between the test value and the actual value compared with the prior art that uses traditional SNR or crossTalk test methods to measure the brightness measurement accuracy of the DeMura device, and provides a quantitatively measurable determination method that can better reflect the actual performance of the Demura device.

[0004] However, the operation process of this invention technology is relatively complex, especially with high requirements for the intelligence of the detection equipment. Compared with the traditional crossTalk test method, although the detection efficiency and accuracy are greatly improved, the equipment is expensive and the maintenance cost is too high. Therefore, we have made improvements to the traditional crossTalk test method and proposed a multi-block crosstalk test method. Summary of the Invention

[0005] The purpose of the present invention is to address the problem of the low detection efficiency and accuracy of the existing traditional crossTalk test method.

[0006] To achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0007] A multi-block crosstalk test method to improve the above problems.

[0008] Specifically, the present invention is as follows:

[0009] It includes the following steps:

[0010] A. Select the background base plate: Prepare at least three groups of pure-color background base plates of the same specification;

[0011] B. Select the square blocks to be measured: Prepare at least two groups of pure-color square blocks to be measured of the same specification, and name them color block a and color block b respectively;

[0012] C. Conduct the traditional crosstalk test;

[0013] D. Conduct the multi-square-block crosstalk test;

[0014] E. Compare and analyze: Numerically compare the test results of step C and step D to obtain the error magnitude, record the time taken for the two test processes, and finally compare to obtain the optimal solution.

[0015] As a preferred technical solution of the present invention, the specifications of the background base plate in step A include length, width, thickness, and surface smoothness.

[0016] As a preferred technical solution of the present invention, the colors of the two groups of background base plates in step A are both 128 pure gray.

[0017] As a preferred technical solution of the present invention, the specifications of the square blocks to be measured in step B include length, width, thickness, and surface smoothness.

[0018] As a preferred technical solution of the present invention, the colors of the square blocks to be measured in step B include but are not limited to pure black, pure white, pure red, pure green, etc.

[0019] As a preferred technical solution of the present invention, color block a is pure black and color block b is pure white.

[0020] As a preferred technical solution of the present invention, the specific process of the traditional crosstalk test in step C is as follows:

[0021] ① Place each color block a separately at the exact center of the upper surface of each background base plate in the first group to form the picture of the test group a, and then observe whether the gray above and below color block a becomes lighter or darker;

[0022] ② Place each color block b separately at the exact center of the upper surface of each background base plate in the second group to form the picture of the test group b, and then observe whether the gray above and below color block b becomes lighter or darker;

[0023] ③ Record the results of test group a and test group b respectively, and organize and analyze the results of the two groups to draw a conclusion.

[0024] As a preferred technical solution of the present invention, the area ratio between the color block a and the background bottom plate, and between the color block b and the background bottom plate is both 1:(2-8).

[0025] As a preferred technical solution of the present invention, the specific process of the multi-block crosstalk test in step D is as follows:

[0026] ①Shrink the color block a and the color block b proportionally to a certain size;

[0027] ②Place two groups of the same number of color blocks a and color blocks b in alignment on the same background bottom plate in the third group to form the picture of the test group c, and then simultaneously observe whether the gray above and below the color blocks a and b becomes lighter or darker;

[0028] ③Record the results of the test group c and draw a conclusion.

[0029] As a preferred technical solution of the present invention, the color blocks a and b are spaced apart from each other.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] In the solution of the present invention: 1. By placing the white block and the black block in alignment in a proportionally scaled form on the same 128 pure gray background bottom plate, it is possible to simultaneously observe whether the white block and the black block have an impact on the gray picture. Compared with the traditional crosstalk test method, the multi-block crosstalk test method does not need to switch different pictures for detection, thus improving the production efficiency;

[0032] 2. For some projects, not only the white block on gray background and black block on gray background pictures need to be tested, but also pictures such as red block on gray background and green block on gray background may be required. There are many pictures, which affect the production rhythm and efficiency. In this solution, various color blocks can also be further reduced in size and placed on the same 128 pure gray background bottom plate in a staggered manner at the same time, effectively reducing the picture switching frequency. It can be concluded that within a certain range, the more types of color blocks, the higher the efficiency of the multi-block crosstalk test method, thus greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the principle of the first case in the traditional crosstalk test method provided by the present invention;

[0034] Figure 2 It is a schematic diagram of the principle of the first case in the multi-block crosstalk test method provided by the present invention;

[0035] Figure 3 It is a schematic diagram of the principle of the second case in the traditional crosstalk test method provided by the present invention;

[0036] Figure 4 This is a schematic diagram of the principle of the second case in the multi-block crosstalk test method provided by the present invention. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention.

[0038] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0039] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0040] It should be noted that: like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the inventive product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0042] Embodiment 1:

[0043] As Figure 1 and Figure 2 shown, this embodiment provides a multi-block crosstalk test method, including the following steps:

[0044] A. Select a background bottom plate: Prepare at least three groups of background bottom plates of the same specification and solid color;

[0045] B. Select the blocks to be tested: Prepare at least two groups of blocks to be tested of the same specification and solid color, and name them color block a and color block b respectively;

[0046] C. Conduct traditional crosstalk testing;

[0047] D. Conduct multi-block crosstalk testing;

[0048] E. Comparative analysis: Numerically compare the test results of steps C and D to obtain the error magnitude, record the time taken for both test processes, and finally compare to obtain the optimal solution.

[0049] As Figure 1 shown, as a preferred embodiment, on the basis of the above method, further, the specifications of the background base plate in step A include length, width, thickness, and surface smoothness, ensuring that the two groups of background base plates have the same factors to avoid interfering with the test results.

[0050] As Figure 1 shown, as a preferred embodiment, on the basis of the above method, further, the colors of the two groups of background base plates in step A are both 128 pure gray.

[0051] As Figure 1 shown, as a preferred embodiment, on the basis of the above method, further, the specifications of the square to be tested in step B include length, width, thickness, and surface smoothness, ensuring that the two groups of squares to be tested have the same factors except for color to avoid interfering with the test results.

[0052] As Figure 1 shown, as a preferred embodiment, on the basis of the above method, further, the colors of the squares to be tested in step B include but are not limited to pure black, pure white, pure red, pure green, etc., and can be selected according to actual test needs to expand the test sample size.

[0053] As Figure 1 shown, as a preferred embodiment, on the basis of the above method, further, the color block a is pure black and the color block b is pure white. Selecting pure black and pure white as the basic samples can best reflect the test effect.

[0054] Example 2:

[0055] The following further introduces the solution in Example 1 in combination with specific working methods, as described in detail below:

[0056] As Figure 1 and Figure 2 shown, this embodiment proposes a multi-block crosstalk testing method, including the following steps:

[0057] A. Select a background base plate: Prepare three groups of pure-color background base plates with the same specifications;

[0058] B. Select the square to be tested: Prepare two groups of pure-color squares to be tested with the same specifications, and name them color patch a and color patch b respectively;

[0059] C. Conduct traditional crosstalk testing;

[0060] D. Conduct multi-square crosstalk testing;

[0061] E. Compare and analyze: Numerically compare the test results of step C and step D to obtain the error magnitude, record the time taken for the two testing processes, and finally compare to obtain the optimal solution.

[0062] As Figure 1 shown, as a preferred implementation manner, on the basis of the above manner, further, the specific process of the traditional crosstalk testing in step C is as follows:

[0063] ① Place each color patch a separately at the exact center of the upper surface of each background base plate in the first group to form the test group a [attached Figure 1 left] picture, and then observe whether the gray above and below the color patch a becomes lighter or darker;

[0064] ② Place each color patch b separately at the exact center of the upper surface of each background base plate in the second group to form the test group b [attached Figure 1 right] picture, and then observe whether the gray above and below the color patch b becomes lighter or darker;

[0065] ③ Record the results of the test group a and the test group b respectively, and organize and analyze the results of the two groups to draw a conclusion.

[0066] As Figure 1 shown, as a preferred implementation manner, on the basis of the above manner, further, the area ratio between the color patch a and the background base plate and between the color patch b and the background base plate is both 1:8, so that the color patch a and the background base plate and the color patch b and the background base plate are in a relatively better observation field of view, and can more accurately reflect the visual color change on the background base plate.

[0067] As Figure 2 shown, as a preferred implementation manner, on the basis of the above manner, further, the specific process of the multi-square crosstalk testing in step D is as follows:

[0068] ① Reduce the color patch a and the color patch b proportionally to a certain size;

[0069] ② Place two groups of the same number of color patch a and color patch b in a pairwise alignment on the same background base plate in the third group to form the test group c [attached Figure 2】 screen, and then observe whether the gray above and below color patch a and color patch b becomes lighter or darker at the same time;

[0070] ③ Record the results of the test group c to be measured and draw a conclusion.

[0071] As Figure 2 shown, as a preferred implementation manner, on the basis of the above manner, further, the color patches a and b are spaced apart from each other, and it is possible to simultaneously observe whether the white block and the black block have an impact on the gray screen on the same background bottom plate. During the observation process, there is no need to switch different screens for detection, and the detection efficiency is improved.

[0072] Example 3:

[0073] The following further introduces the solutions in Example 1 and Example 2 in combination with specific working methods, as detailed in the following description:

[0074] As Figure 3 and Figure 4 shown, this embodiment proposes a multi-block crosstalk test method, including the following steps: including the following steps:

[0075] A. Select a background bottom plate: Prepare five groups of background bottom plates of the same specification and solid color;

[0076] B. Select the blocks to be measured: Prepare four groups of blocks to be measured of the same specification and solid color, and name them color patch a, color patch b, color patch c, and color patch d respectively;

[0077] C. Perform a traditional crosstalk test;

[0078] D. Perform a multi-block crosstalk test;

[0079] E. Compare and analyze: Numerically compare the test results of step C and step D to obtain the error magnitude, record the time used in the two test processes, and finally compare to obtain the best solution.

[0080] As Figure 3 shown, as a preferred implementation manner, on the basis of the above manner, further, the specific process of the traditional crosstalk test in step C is as follows:

[0081] ① Place each color patch a separately at the exact center of the upper surface of each background bottom plate in the first group to form a test group a [attached Figure 3 leftmost one] screen, and then observe whether the gray above and below color patch a becomes lighter or darker;

[0082] ② Place each color patch b separately at the exact center of the upper surface of each background bottom plate in the second group to form a test group b [attachedFigure 3 the screen of [second from the left], and then observe whether the gray above and below the color patch b becomes lighter or darker;

[0083] ③ Place each color patch c separately at the exact center of the upper surface of each background base plate in the second group to form the test group c [attached Figure 3 second from the right] of the screen, and then observe whether the gray above and below the color patch c becomes lighter or darker;

[0084] ④ Place each color patch d separately at the exact center of the upper surface of each background base plate in the second group to form the test group d [attached Figure 3 rightmost] of the screen, and then observe whether the gray above and below the color patch d becomes lighter or darker;

[0085] ⑤ Record the results of the test groups a, b, c, and d respectively, and sort out and analyze the results of the two groups to draw a conclusion.

[0086] As Figure 1 shown, as a preferred embodiment, on the basis of the above method, further, the area ratios between the color patch a and the background base plate, between the color patch b and the background base plate, between the color patch c and the background base plate, and between the color patch d and the background base plate are all 1:8, so that the color patch a and the background base plate, the color patch b and the background base plate, the color patch c and the background base plate, and the color patch d and the background base plate are in a relatively better observation field of view, and can more accurately reflect the visual color change on the background base plate.

[0087] As Figure 2 shown, as a preferred embodiment, on the basis of the above method, further, the specific process of the multi-color patch crosstalk test in step D is as follows:

[0088] ① Reduce the color patches a, b, c, and d proportionally to a certain size;

[0089] ② Place four groups of the same number of color patches a, b, c, and d in a pairwise alignment on the same background base plate in the third group to form the test group c [attached Figure 4 of the screen, and then simultaneously observe whether the gray above and below the color patches a and b becomes lighter or darker;

[0090] ③ Record the results of the test group c and draw a conclusion.

[0091] As Figure 2As shown, as a preferred embodiment, on the basis of the above method, further, the color patches a, b, c, and d are spaced apart from each other, enabling the simultaneous observation of whether the white and black patches have an impact on the gray screen on the same background base plate. During the observation process, there is no need to switch between different screens for detection, thus significantly improving the detection efficiency.

[0092] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A multi-block crosstalk test method, characterized in that, it includes the following steps: A. Select a background bottom plate: Prepare at least three groups of background bottom plates of the same specification and solid color; B. Select the blocks to be tested: Prepare at least two groups of blocks to be tested of the same specification and solid color, and name them color block a and color block b respectively; C. Conduct traditional crosstalk tests; D. Conduct multi-block crosstalk tests; E. Compare and analyze: Numerically compare the test results of step C and step D, obtain the error magnitude, record the time used in both test processes, and finally compare to obtain the optimal solution; The specific process of the traditional crosstalk test in step C is as follows: ① Place each color block a separately at the exact center of the upper surface of each background bottom plate in the first group to form the picture of the test group a, and then observe whether the gray above and below the color block a becomes lighter or darker; ② Place each color block b separately at the exact center of the upper surface of each background bottom plate in the second group to form the picture of the test group b, and then observe whether the gray above and below the color block b becomes lighter or darker; ③ Record the results of the test group a and the test group b respectively, and organize and analyze the results of the two groups to draw a conclusion; The area ratio between the color block a and the background bottom plate and between the color block b and the background bottom plate is both 1:(2 - 8); The specific process of the multi-block crosstalk test in step D is as follows: ① Reduce the color block a and the color block b proportionally to a certain size; ② Place two groups of the same number of color block a and color block b in alignment on the same background bottom plate in the third group to form the picture of the test group c, and then simultaneously observe whether the gray above and below the color block a and the color block b becomes lighter or darker; ③ Record the results of the test group c and draw a conclusion; The color block a and the color block b are distributed at intervals.

2. A multi-block crosstalk test method according to claim 1, characterized in that, the specification of the background bottom plate in step A includes length, width, thickness and surface smoothness.

3. A multi-block crosstalk test method according to claim 1, characterized in that, the colors of the two groups of background bottom plates in step A are both 128 pure gray.

4. A multi-block crosstalk test method according to claim 1, characterized in that, the specification of the blocks to be tested in step B includes length, width, thickness and surface smoothness.

5. A multi-block crosstalk test method according to claim 1, characterized in that, the color of the blocks to be tested in step B is selected from any one of black, pure white, pure red and pure green.

6. A multi-block crosstalk test method according to claim 5, characterized in that, the color block a is pure black and the color block b is pure white.

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