Touch Display Segmentation with Non-Straight Open Parts
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Solution Overview
Problem
The visibility in the boundary region between first and second touch electrodes in integrated touch screen display devices is compromised due to electrical connections and interference, affecting the overall display quality.
Innovation Solution
The design includes a substrate with a display element featuring first and second touch electrodes that are spaced apart and not electrically connected by open parts, with a non-straight virtual line connecting these open parts, ensuring the electrodes are not short-circuited and maintaining consistent reflectance across the boundary area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If first touch electrodes and second touch electrodes are electrically connected to form a continuous touch screen, then touch sensitivity and functionality are improved, but visibility in the boundary region deteriorates due to electrical interference and short-circuit risks
Solution Approach 1:
The touch electrodes are divided into multiple sub-electrodes (first sub-touch electrodes and second sub-touch electrodes) that are spatially separated by open parts. This segmentation allows the electrodes to maintain electrical connectivity through bridge electrodes while preventing direct electrical interference in the boundary region, thereby improving visibility without sacrificing touch sensitivity.
Solution Approach 2:
Bridge electrodes are introduced as intermediary elements to connect the first and second touch electrodes indirectly. These bridge electrodes are positioned away from the boundary region where visibility is critical, allowing electrical connectivity to be maintained while preventing electrical interference from affecting the visible boundary area.
2Ease of manufacture
If open parts are arranged in a straight line configuration, then manufacturing simplicity is improved, but visibility deteriorates due to形成的 straight-line interference pattern
Solution Approach 1:
The open parts are deliberately arranged in a non-straight line configuration, breaking the symmetry that would create straight-line interference patterns. This asymmetric arrangement disrupts the formation of visible interference patterns while maintaining manufacturing feasibility, thereby improving visibility in the boundary region.
3Area of stationary object
If first touch electrodes and second touch electrodes are placed close together to maximize display area, then display area is improved, but electrical interference increases causing visibility problems
Solution Approach 1:
By segmenting the electrodes into sub-electrodes with open parts between them, the design allows closer overall placement of touch electrode systems while maintaining local separation where electrical interference occurs. This enables maximization of display area while preventing harmful electrical interference through strategic segmentation.
Data Source
AI summary
Disclosed is a display device with an integrated touch screen comprising a substrate; a display device comprising a plurality of pixels disposed on the substrate; and a first touch electrode and a second touch electrode disposed on the display device, the first touch electrode includes a first sub-touch electrode and a second sub-touch electrode, the second touch electrode includes a third sub-touch electrode and a fourth sub-touch electrode, and a position of a plurality of open parts disposed between the first sub-touch electrode and the third sub-touch electrode or between the second sub-touch electrode and the fourth sub-touch electrode, is adjusted so that a virtual line connecting the plurality of open parts is not in a straight line.