Touch Lead Arrangement for Display Array Substrate
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Solution Overview
Problem
The existing array substrates in display technology face issues with insufficient curing of the frame sealing adhesive due to low total light transmittance in the frame sealing adhesive area, leading to reliability failures, primarily because the minimum distance between touch leads is equal to that between touch signal output terminals, resulting in inadequate light transmittance and curing.
Innovation Solution
The array substrate design includes a non-display area with a frame sealing adhesive area where the minimum distance between adjacent touch leads is greater than that between adjacent touch signal output terminals, increasing the general area and thus enhancing total light transmittance by optimizing the arrangement of touch leads with turning points and varying distances within the frame sealing adhesive area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the minimum distance between touch leads is equal to that between touch signal output terminals, then the device complexity is reduced and manufacturing is simplified, but the total light transmittance in the frame sealing adhesive area decreases below 35%, resulting in insufficient curing of the frame sealing adhesive
Solution Approach 1:
The patent divides the frame sealing adhesive area into multiple sub-regions based on the arrangement of touch leads and output terminals. By segmenting the area and analyzing light transmittance in each sub-region, the design optimizes the distance between adjacent leads to ensure sufficient light penetration for complete curing while maintaining signal integrity.
Solution Approach 2:
The patent applies different minimum distance requirements to different regions within the frame sealing adhesive area. Specifically, it sets the minimum distance between adjacent touch leads to be no less than 10 micrometers, which is optimized for the local light transmittance requirements of the frame sealing adhesive curing process, rather than applying a uniform distance throughout the entire area.
2Reliability
If the minimum distance between adjacent touch leads is increased to improve light transmittance, then the curing reliability of frame sealing adhesive improves, but the area occupied by leads increases, reducing the general area of the display
Solution Approach 1:
The patent applies the minimum distance requirement of no less than 10 micrometers specifically to adjacent touch leads within the frame sealing adhesive area, rather than to all leads throughout the entire device. This partial application of the distance constraint ensures sufficient light transmittance where needed while minimizing the impact on the overall display area.
Solution Approach 2:
The patent optimizes the two-dimensional arrangement of touch leads and output terminals in the frame sealing adhesive area by carefully controlling their spacing and positioning. This dimensional optimization ensures that the increased distance between leads does not excessively reduce the general display area, while still achieving the required light transmittance for proper adhesive curing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design improves the curing reliability of the frame sealing adhesive by increasing total light transmittance to 35% or greater, ensuring effective sealing and preventing pollutant entry, thereby enhancing the overall performance and reliability of the array substrate.
Implementation Method 1
insufficient curing of the frame sealing adhesive due to low total light transmittance in the frame sealing adhesive area
Data Source
AI summary
An array substrate and a display apparatus are provided. The array substrate includes a display area and a non-display area surrounding the display area, wherein the non-display area includes a frame sealing adhesive area, a plurality of touch leads and a plurality of touch signal output terminals. The plurality of touch signal output terminals are electrically connected with the plurality of touch leads, respectively, and the plurality of touch signal output terminals input a touch signal to the display area via the touch lead. A minimum distance between two adjacent touch leads in the frame sealing adhesive area is greater than a minimum distance between two adjacent touch signal output terminals correspondingly connected to said two adjacent touch leads.