Variant LCD Terminal Area Segmentation for Testing
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Solution Overview
Problem
Liquid crystal display devices with non-rectangular display areas face challenges in accommodating testing terminals and wirings, leading to increased costs and inability to perform quality checks after product completion, as these devices require a smaller terminal area for circular or variant shapes.
Innovation Solution
A liquid crystal display device structure with a terminal area that is not rectangular, featuring edges with specific angles and orientations, allowing for the integration of testing terminals and wirings within the terminal area, enabling efficient space utilization and maintaining the device's shape similarity to the display area, thus facilitating easier installation and quality checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the outer shape of the liquid crystal display device is made circular or variant shape to match the display area, then the device achieves better aesthetic appearance and compactness, but it becomes difficult to provide sufficient space in the terminal area to locate testing terminals, testing wirings, and other necessary elements
Solution Approach 1:
The terminal area is segmented into multiple functional zones: a first area for signal terminals and power terminals, and a second area for testing terminals and testing wirings. This segmentation allows both operational terminals and testing elements to coexist in the limited terminal area without interfering with each other, resolving the space constraint problem caused by the circular outer shape.
2Device complexity
If testing terminals and testing wirings are cut away from the terminal area to reduce costs and simplify the structure, then the device complexity is reduced, but quality check cannot be performed after the product is completed
Solution Approach 1:
Testing terminals and testing wirings are integrated into the terminal area during the manufacturing process, allowing quality checks to be performed on the display panel before final assembly. This preliminary testing ensures product reliability while maintaining a relatively simple terminal area structure, as the testing elements are permanently incorporated rather than requiring separate testing fixtures.
3Ease of operation
If a rectangular terminal area is used to easily accommodate terminal elements, then the ease of locating elements is improved, but the device outer shape becomes rectangular which does not match the circular display area and reduces aesthetic appearance
Solution Approach 1:
The terminal area adopts a rectangular configuration locally to facilitate easy placement of terminal elements, while the overall device outer shape maintains a circular form to match the display area. This local quality approach allows the terminal area to have different geometric properties than the main device body, enabling both functional ease and aesthetic consistency to be achieved simultaneously.
Data Source
AI summary
The purpose of the present invention is to realize a structure that the testing terminals are remained in the final product in the liquid crystal display device having a variant display area. The structure of the present invention is as follows. The display area is variant, the outer shapes of the counter substrate 200 and the TFT substrate are also variant similar to the display area. The terminal area formed on the TFT substrate has a straight first area, a second area and a third area; the second area and the third are bent from the first area and formed at sides of the first area. A plurality of terminals to drive the liquid crystal display device exist in the first area, and a plurality of terminals for testing the liquid crystal display device exist in the second area and the third area.