Touch Device Conductive Layer for Faster Signal Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current touch technology faces issues with insufficient signal charging time as the size of the touch panel increases, leading to higher transmission impedance and load.
Innovation Solution
The touch device incorporates a conductive layer between the display panel and the touch substrate to shield noise interference, and employs touch electrodes with varying widths and distances from the control element to optimize signal charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the size of the touch panel increases, then the coverage area is improved, but the transmission impedance and load increase resulting in insufficient signal charging time
Solution Approach 1:
The touch panel is divided into multiple independent driving regions, each with its own driving electrode and signal charging path. This segmentation reduces the transmission distance and impedance for each region, allowing sufficient signal charging time even as the overall panel size increases. The control element can independently charge signals to each segmented region without being constrained by the total panel area.
2Area of stationary object
If the touch panel size increases, then the coverage area is improved, but the transmission impedance increases
Solution Approach 1:
By dividing the touch panel into multiple driving regions with separate signal paths, the transmission impedance of each individual path is reduced. Each segmented region has shorter electrode lengths and lower capacitive load, thereby decreasing the overall transmission impedance despite the increased total panel area.
3Area of stationary object
If the touch panel size increases, then the coverage area is improved, but the load increases
Solution Approach 1:
The control element charges signals to multiple driving electrodes independently and simultaneously. By segmenting the touch panel into multiple driving regions, the total signal load is distributed across parallel charging paths rather than being concentrated in a single large electrode, thereby reducing the effective load on each charging circuit.
Data Source
AI summary
A touch device includes a display panel, a conductive layer, and a first touch substrate. The display panel includes a first substrate. The conductive layer is disposed on a first surface of the first substrate. The first touch substrate is disposed on the conductive layer and includes a first touch electrode.