A method for improving the production yield of a display module

Abstract

The application discloses a method for improving the production yield of a display module, comprising the following steps: step 1: after the display module is sent to a predetermined position of a three-in-one machine, the display module is lighted and the display module displays an alignment picture; step 2: a lens of the three-in-one machine collects color coordinate data of a display area corresponding to the orthographic projection of the display module and compares the color coordinate data with a predetermined standard, and when the collected color coordinate data meets the predetermined standard, it is judged that the lens position is centered. The application adds a detection step of whether the lens is centered in the three-in-one machine, reduces unstable factors (missed detection and insufficient precision of lens centering) of manual detection of whether the lens is centered, after the lens is centered and adjusted, the situation of discarding materials due to non-standard brightness during the three-in-one machine test is obviously reduced, the accuracy of collected optical data can be ensured, and the production efficiency and yield are improved.

Description

Technical Field

[0001] This invention relates to the field of display module technology, and in particular to a method for improving the production yield of display modules. Background Technology

[0002] During the production of display modules, they need to be fed into a three-in-one automated machine for programming, screen lighting testing, and touch operation. In actual production, situations may arise where the optical lens of the three-in-one machine is not centered relative to the display module (especially after changing to a different model of display module or after machine modification). These problems are relatively subtle and difficult to detect. When the lens is not centered, it can easily lead to inaccurate data collected by the lens from the display module (such as misjudging that the display module's brightness is insufficient), resulting in problems such as rejecting NG (non-compliant) display modules, which negatively impacts the production yield of display modules.

[0003] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method to improve the production yield of display modules.

[0005] The technical solution of the present invention is as follows: The present invention provides a method for improving the production yield of display modules, comprising the following steps: Step 1: After the display module is sent into the predetermined position of the three-in-one machine, the display module is lit up and the display module displays the alignment screen. When the display module displays the alignment screen, the center area of ​​the display module is the first area, which displays the first color, and the area surrounding the first area is the second area, which displays the second color. The first color and the second color are different. Step 2: The lens of the three-in-one machine collects the color coordinate data of the display area corresponding to the orthographic projection of the display module and compares it with the predetermined standard. If the collected color coordinate data meets the predetermined standard, it is determined that the lens position is centered; otherwise, it is determined that the lens position is not centered. Step 3: When the camera position is determined to be out of center, an alarm message is issued.

[0006] Furthermore, the first color is yellow, and the second color is black.

[0007] Furthermore, in step 2, when the color coordinates captured by the lens are X: 0.4200±0.03, Y: 0.5300±0.03, the lens position is determined to be centered.

[0008] Furthermore, the shape and size of the first region are the same as those of the lens.

[0009] Furthermore, when the display module displays the alignment image, the display area, except for the first area, is the second area.

[0010] The beneficial effects of the present invention by adopting the above solution are as follows: by adding a detection step for whether the lens is centered in the three-in-one machine, the unstable factors of manual detection of whether the lens is centered (missed detection, insufficient lens centering); after the lens is centered, the number of cases of material rejection due to insufficient brightness during testing of the three-in-one machine is significantly reduced, and the accuracy of the collected optical data can also be ensured, thereby improving production efficiency and yield. Detailed Implementation

[0011] The present invention will be described in detail below with reference to specific embodiments.

[0012] This invention provides a method for improving the production yield of display modules, comprising the following steps: Step 1: After the display module is placed into the predetermined position of the three-in-one machine, turn on the display module and make the display module display the alignment image. When the display module displays the alignment image, the center area of ​​the display module is the first area. The shape and size of the first area are the same as the shape and size of the lens. The first area is displayed in yellow. The outer perimeter of the first area is the second area. The second area is displayed in black. Step 2: The lens of the three-in-one machine collects the color coordinate data of the display area corresponding to the orthographic projection of the display module (e.g., when the display module is placed directly below the lens, the display area collected by the lens is located directly below the lens) and compares it with a predetermined standard. When the collected color coordinate values ​​are X: 0.4200±0.03, Y: 0.5300±0.03, it means that the data collected by the lens comes from the first area of ​​the display module, indicating that the lens is facing the center area of ​​the display module, so it can be known that the lens is centered. When the collected color coordinate values ​​are X: 0.2400±0.03, Y: 0.2300±0.03, it means that the data collected by the lens comes from the second area, and the lens is not facing the center area of ​​the display module, so it is determined that the lens is misaligned and not centered.

[0013] Step 3: When the lens position is determined to be centered, the three-in-one machine can continue with normal burning and other work. When the lens position is determined to be out of center, the three-in-one machine will issue an alarm message. At this time, the operator can know that the problem has occurred and stop the line to adjust the machine in time to avoid the product yield rate being reduced due to the lens being out of center.

[0014] In summary, the beneficial effects of this solution are as follows: adding a lens centering detection step to the three-in-one machine reduces the instability factors (missed detection, inaccurate lens centering) in manual lens centering detection; after the lens is properly centered, the number of material rejections due to insufficient brightness during testing on the three-in-one machine is significantly reduced, and the accuracy of the collected optical data is also ensured, thereby improving production efficiency and yield.

[0015] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for improving the production yield of display modules, characterized in that, The process includes the following steps: Step 1: After the display module is placed into the predetermined position on the three-in-one machine, the display module is turned on and displays the alignment image. When the display module displays the alignment image, the center area of ​​the display module is the first area, which displays the first color. The area surrounding the first area is the second area, which displays the second color. The first and second colors are different. Step 2: The lens of the three-in-one machine collects the color coordinate data of the display area corresponding to the orthographic projection of the display module and compares it with a predetermined standard. When the collected color coordinate data meets the predetermined standard, the lens position is determined to be centered; otherwise, the lens position is determined to be out of center. Step 3: When the lens position is determined to be out of center, an alarm message is issued.

2. The method for improving the production yield of display modules according to claim 1, characterized in that, The first color is yellow, and the second color is black.

3. The method for improving the production yield of display modules according to claim 2, characterized in that, In step 2, when the color coordinates captured by the lens are X: 0.4200±0.03, Y: 0.5300±0.03, the lens position is determined to be centered.

4. The method for improving the production yield of display modules according to any one of claims 1 to 3, characterized in that, The shape and size of the first region are the same as those of the lens.

5. The method for improving the production yield of display modules according to any one of claims 1 to 3, characterized in that, When the display module displays the alignment image, the display area, except for the first area, is all the second area.