Touch Electrode Spacing on Encapsulating Element
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Solution Overview
Problem
In display apparatuses, the area where user or tool touch is not recognized is increased due to touch lines, leading to deteriorated reliability in touch recognition, and the space between touch electrodes is enlarged.
Innovation Solution
A display apparatus design where touch electrodes and touch lines are disposed on the same layer, with touch lines extending beyond the display area and connected to touch pads via first and second touch links, allowing for reduced bezel area occupation and minimized space between touch electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch lines are disposed on the same layer as touch electrodes, then touch recognition function is achieved, but the space between touch electrodes is increased and touch reliability deteriorates
Solution Approach 1:
The patent introduces a multi-layer structure where touch lines are disposed on a lower layer (first substrate) while touch electrodes are on an upper layer (second substrate). This vertical separation in the Z-dimension allows touch electrodes to be closely spaced without interference from touch lines, resolving the contradiction between achieving touch recognition function and maintaining touch reliability.
Solution Approach 2:
The patent divides the touch sensor structure into separate layers: touch lines are segmented and disposed on the first substrate, while touch electrodes are disposed on the second substrate. This segmentation allows independent optimization of each component's position and reduces interference between touch lines and touch electrodes, improving touch reliability.
2Ease of operation
If touch lines are disposed on the same layer as touch electrodes, then touch recognition function is achieved, but the bezel area occupied by touch lines is increased
Solution Approach 1:
By moving touch lines to a lower layer (first substrate) and touch electrodes to an upper layer (second substrate), the patent enables more efficient spatial arrangement. The touch lines can be routed through the bezel area on the lower layer without occupying horizontal space that would reduce the touch electrode array density, thus reducing bezel area occupation while maintaining touch recognition function.
3Reliability
If space between touch electrodes is reduced, then touch reliability is improved, but touch lines interfere with touch electrode arrangement
Solution Approach 1:
The patent resolves the arrangement complexity by utilizing vertical layering. Touch lines on the first substrate and touch electrodes on the second substrate occupy different Z-dimensions, allowing touch electrodes to be closely spaced without horizontal interference from touch lines. This simplifies the 2D arrangement planning while achieving high-density electrode placement for improved touch reliability.
Data Source
AI summary
A display apparatus is provided. In the display apparatus, a touch electrode may be disposed on the encapsulating element covering a light-emitting device, and a touch pad may be disposed on the outside of the encapsulating element. A touch line may be connected to the touch electrode. The touch line may be connected to the touch pad by a first touch link and a second touch link. The first touch link may include a first end connected to the second touch link, and a second end connected to the touch line. The first end of the first touch link may overlap with the encapsulating element. Thus, in the display apparatus, the reliability for a touch of a user or a tool may be improved.