Display Touch Sensing Layer Wiring Segmentation
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Solution Overview
Problem
Display apparatuses face challenges in minimizing dark patterns caused by metal wiring in the touch sensing layer, which affects the visibility and display quality.
Innovation Solution
The display apparatus includes a substrate with a pixel circuit layer and a touch sensing layer. The touch sensing layer features a first metal wiring, an insulating member layer, and a second metal wiring with openings that expose the insulating member layer, strategically located where the second metal wiring overlaps the first metal wiring. This configuration allows for the transmission of different signals and minimizes dark patterns by optimizing light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal wiring is used in the touch sensing layer, then electrical signal transmission is improved, but dark patterns are generated that reduce display quality
Solution Approach 1:
The second metal wiring is segmented into multiple separate wirings instead of forming a continuous overlapping structure with the first metal wiring. This segmentation reduces the area where light reflection occurs, thereby minimizing dark patterns while maintaining electrical connectivity and signal transmission functionality.
Solution Approach 2:
The patent applies different spatial arrangements to different regions of the metal wiring layer. Specifically, the second metal wiring is positioned to overlap the first metal wiring only in specific local areas rather than uniformly across the entire structure, creating local variations in light reflection characteristics that reduce overall dark pattern visibility.
2Reliability
If metal wirings overlap in the touch sensing layer, then electrical connectivity is improved, but light reflection is increased causing visible dark patterns
Solution Approach 1:
The second metal wiring is divided into multiple separate segments that are spatially distributed. This segmentation allows electrical connectivity to be maintained through the segments while reducing the continuous overlapping area with the first metal wiring, thereby decreasing light reflection and minimizing dark pattern visibility.
Solution Approach 2:
The patent utilizes the vertical dimension by positioning the second metal wiring on a different layer above the first metal wiring. By controlling the overlap area in this three-dimensional arrangement, the patent achieves electrical connectivity through vertical stacking while minimizing the horizontal projection area where light reflection occurs.
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 solution effectively minimizes dark patterns generated by the metal wiring, enhancing the display quality and user experience by optimizing light reflection and signal transmission.
Implementation Method 1
minimizes dark patterns by optimizing light reflection
Data Source
AI summary
A display apparatus includes a substrate, a pixel circuit layer located on the substrate, and a touch sensing layer located on the pixel circuit layer, and comprising a first metal wiring, an insulating member layer located on the first metal wiring, and a second metal wiring located on the insulating member layer. The second metal wiring comprises an opening exposing a top surface of the insulating member layer, and the opening of the second metal wiring is located at a first region where the second metal wiring and the first metal wiring overlap each other in a plan view.