Touch Display Substrate Multiplexer Layout for Faster, Lower-Noise Sensing
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Solution Overview
Problem
Existing touch display products face inefficiencies in processing data due to the large contact area between a user's finger and the display, leading to low calculation efficiency and increased noise differences between adjacent touch electrodes.
Innovation Solution
A touch display substrate with an active area and a lead area, featuring touch lines, touch leads, and touch electrodes, where at least two of every three adjacent touch electrodes are connected to different multiplexers through coupled touch lines and touch leads, improving signal processing and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If touch electrodes are connected to the same multiplexer, then device complexity is reduced, but calculation efficiency decreases and noise differences increase
Solution Approach 1:
The patent divides the touch electrode array into multiple groups, where each group is connected to a different multiplexer. Specifically, at least two of every three adjacent touch electrodes are connected to different multiplexers, creating segmented processing channels that improve calculation efficiency and reduce noise while maintaining manageable device complexity.
2Productivity
If touch electrodes are connected to different multiplexers, then calculation efficiency improves, but device complexity increases
Solution Approach 1:
The patent applies local quality by creating different connection patterns for different groups of touch electrodes. Instead of a uniform connection scheme, specific local groups (at least two of every three adjacent electrodes) are connected to different multiplexers, optimizing performance locally while maintaining overall system manageability.
3Area of moving object
If large contact area is used for touch input, then user interaction area is increased, but data processing load increases and calculation efficiency decreases
Solution Approach 1:
The patent segments the touch electrode array into multiple groups connected to different multiplexers. This segmentation allows parallel processing of touch data from different regions, reducing the processing load for large contact areas and maintaining calculation efficiency even when the user's finger covers a large area of the display.
Data Source
AI summary
A touch display substrate, an integrated circuit chip and a display device are disclosed. The touch display substrate with an active area and a lead area arranged in sequence includes: a plurality of touch lines arranged in the active area; a plurality of touch leads in one-to-one correspondence with the plurality of touch lines; a plurality of touch electrodes arranged in an array in the active area, each of the touch electrodes is coupled to one of the touch lines; at least two of every three adjacent touch electrodes are connected to different multiplexers through coupled touch lines and touch leads.