MUX Gate Line Layout for Low-Distortion Touch Displays
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Solution Overview
Problem
Existing display devices with touch sensors face challenges in reducing signal distortion and wiring damage, which can affect touch performance reliability.
Innovation Solution
The display device incorporates a unique design of MUX gate lines that do not overlap each other in a plan view, with specific configurations and orientations to minimize interference, and includes a multiplexer connected to sensing electrodes through sensing lines, enhancing signal integrity and reducing wiring stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MUX gate lines are arranged to extend in multiple directions with overlapping portions, then wiring density is improved, but signal distortion and wiring damage risk increase
Solution Approach 1:
The MUX gate line is divided into multiple portions (first MUX gate line portion and second MUX gate line portion) that extend in different directions. Each portion is electrically connected through contact holes, creating segmented paths that avoid overlapping and reduce signal distortion while maintaining wiring density.
Solution Approach 2:
The gate line structure transitions from a single-direction linear arrangement to a multi-directional configuration with portions extending in first and second directions. This dimensional change allows the gate line to access multiple transistor gates without creating overlapping paths, reducing electromagnetic interference.
2Adaptability or versatility
If MUX gate lines extend in multiple directions with overlapping portions, then routing flexibility is improved, but wiring damage risk increases
Solution Approach 1:
The gate line is segmented into multiple portions connected through contact holes, allowing flexible routing to different transistor gates while avoiding continuous overlapping paths that cause mechanical stress and wiring damage.
Solution Approach 2:
Contact holes serve as intermediary connection points between the first and second MUX gate line portions. These intermediaries enable the gate line to switch directions and access different transistors without creating long overlapping sections that are prone to damage.
3Area of stationary object
If MUX gate lines are arranged with overlapping portions, then space utilization is improved, but touch performance reliability decreases
Solution Approach 1:
The gate line structure is segmented into multiple portions extending in different directions, connected through contact holes. This segmentation allows efficient space utilization by routing gate lines to multiple transistor locations without creating overlapping paths that would reduce touch performance reliability.
Data Source
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AI summary
A display device includes: a display part including a base layer and a light emitting element on the base layer; a sensing part on the display part, and including a sensing electrode; a multiplexer electrically connected to the sensing electrode through a sensing line, and including multiplexer (MUX) transistors on a portion of the base layer; and MUX gate lines electrically connected to the MUX transistors.