Touch Screen Panel Wiring Line Reduction via Switching Units
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Solution Overview
Problem
Existing touch screen panels have a significant non-displaying area that increases in size with the number of wiring lines, limiting their compactness and efficiency.
Innovation Solution
The touch screen panel design incorporates switching units with transistors between sensing and wiring lines, allowing selective connection of sensing lines to wiring lines, reducing the number of wiring lines needed and minimizing the non-display area by forming these units on both sides of the panel and using an insulating layer to connect sensing lines in a crisscross pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of wiring lines is increased to connect more sensing lines, then the connectivity and functionality are improved, but the non-display area increases in size
Solution Approach 1:
Multiple sensing lines are connected to a single wiring line through switching units. The switching units allow one wiring line to serve multiple sensing lines by selectively connecting them, thereby reducing the total number of wiring lines needed and minimizing the non-display area while maintaining full connectivity functionality.
Solution Approach 2:
A single wiring line is designed to connect to multiple sensing lines through the switching units, making the wiring line multi-functional. This universal connection approach allows the same wiring line to serve different sensing lines at different times, reducing the overall number of wiring lines required.
2Reliability
If more wiring lines are used to ensure adequate signal routing, then the reliability of signal transmission is improved, but the compactness and efficiency deteriorate
Solution Approach 1:
The switching units enable dynamic connection routing, where the connection between sensing lines and wiring lines can be changed based on operational requirements. This dynamic switching capability ensures reliable signal transmission through multiple possible paths while maintaining a compact design, as the same physical infrastructure can adapt to different signal routing needs.
3Area of stationary object
If the number of wiring lines is reduced to minimize non-display area, then the compactness is improved, but the complexity of selective connection increases
Solution Approach 1:
The connection system is segmented into multiple switching units, each responsible for specific sensing line connections. This segmentation allows the complex connection task to be divided into manageable units, where each switching unit handles a specific subset of connections, thereby reducing the overall system complexity while enabling compact design with fewer wiring lines.
4Productivity
If switching units are added to enable selective connection, then the efficiency of wiring line utilization is improved, but the device complexity increases
Solution Approach 1:
The switching units are positioned at the intersection of sensing lines and wiring lines, adding a spatial dimension to the connection architecture. This dimensional arrangement allows multiple sensing lines to converge on a single wiring line through the switching units, improving wiring line utilization efficiency while the modular switching unit design keeps the structural complexity manageable.
Data Source
AI summary
A touch screen panel is disclosed. In one aspect, the touch screen panel includes a substrate divided into a display area and a non-display area positioned outside the display area, sensing lines in the display area and wiring lines in the non-display area. Each wiring line is connected to two or more sensing lines. The switching units are connected to the sensing lines and the wiring lines so as to selectively connect one of each of the sensing lines to each of the wiring lines.