Touch Display Panel Auxiliary Wiring Structure for Uniformity
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Solution Overview
Problem
Existing self-capacitive touch screens suffer from low picture display quality due to uneven distribution of touch leads on touch blocks, leading to uneven wiring arrangements and projection distributions.
Innovation Solution
The implementation of a touch display panel design that includes a first conductive layer with touch electrodes, a second conductive layer with touch leads and auxiliary structures, and an insulation layer. The auxiliary structures are strategically placed on at least one side of the touch leads to increase wiring distribution density in areas where the touch leads are not projected, thereby reducing the difference in wiring arrangement density and improving uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If touch leads are arranged in self-capacitive touch screens to achieve faster response speed, then response speed is improved, but wiring distribution becomes uneven resulting in low picture display quality
Solution Approach 1:
The patent applies local quality by introducing auxiliary structures specifically in areas where touch leads are not projected, creating non-uniform wiring distribution that compensates for local deficiencies. The auxiliary structures are strategically placed to increase wiring density in specific regions, making different parts of the touch block have different wiring characteristics to achieve overall uniformity.
Solution Approach 2:
The auxiliary structures act as intermediary elements between the touch leads and the touch electrodes. These auxiliary structures mediate the wiring distribution by providing additional conductive paths in areas where touch leads are absent, thereby balancing the overall wiring distribution across the touch block.
2Adaptability or versatility
If touch leads are overlapped in some areas but not in other areas of the touch block, then wiring layout flexibility is improved, but wiring distribution uniformity deteriorates resulting in uneven picture display
Solution Approach 1:
The patent makes different areas of the touch block have different wiring compositions - areas with touch leads have the lead structure, while areas without touch leads have auxiliary structures. This local differentiation compensates for the unevenness created by the asymmetric wiring layout, achieving uniform projected wiring distribution across the entire touch block.
Data Source
AI summary
A touch display panel and an electronic terminal are disclosed in the present application, including a first conductive layer and a second conductive layer of different layers, and an insulation layer is arranged between the first conductive layer and the second conductive layer. The first conductive layer includes a plurality of touch electrodes arranged along a first direction and a second direction. The second conductive layer includes a first touch lead and a first auxiliary structure both overlapped with a first touch electrode in the plurality of touch electrodes. The first auxiliary structure is located on at least one side of the first touch lead.