Flexible Touch Panel Spacer Gel Layer Restoration Speed
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Solution Overview
Problem
Flexible touch panels with elastic spacers suffer from touch misrecognition and delayed reaction times due to slow restoration after touch release, leading to errors in detecting touch states and delayed subsequent input recognition.
Innovation Solution
A touch device comprising a touch panel with pressure sensors and a touch controller that acquires and corrects touch data by calculating variations in touch signal intensity, using a spacer made of elastic material to improve sensitivity and accuracy, and determining touch coordinates based on corrected data to prevent misrecognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a spacer made of elastic material is used to satisfy flexible characteristic, then touch sensitivity is improved, but restoration speed after touch release becomes slow
Solution Approach 1:
The patent changes the material parameter of the spacer from purely elastic material to a composite structure including a gel layer. This parameter change allows the spacer to maintain high touch sensitivity while achieving faster restoration speed, as the gel layer provides rapid recovery characteristics that compensate for the slow restoration of elastic materials.
2Ease of operation
If elastic spacer is used to improve touch reactivity, then touch sensitivity increases, but touch misrecognition errors increase
Solution Approach 1:
The patent modifies the spacer's material composition by introducing a gel layer, which changes the restoration characteristics. This parameter change enables the system to maintain high touch reactivity while reducing misrecognition errors, as the gel layer's rapid restoration prevents the spacer from remaining in a deformed state that would cause false touch detections.
3Adaptability or versatility
If elastic spacer is used to maximize portability, then flexibility is improved, but delay in next touch input increases
Solution Approach 1:
The patent changes the spacer material from elastic to a gel-based composite structure. This parameter change maintains the flexibility needed for portability while dramatically reducing the delay time before the next touch input, as the gel layer restores quickly after deformation, allowing the touch panel to be ready for the next interaction almost immediately.
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
The solution enhances touch sensitivity and reaction speed, reducing errors and delays in recognizing touch states, thereby improving the overall performance of flexible touch panels.
Implementation Method 1
the spacer may include a gel layer extending in a horizontal direction along the second substrate and having a higher restoration speed than a vertical side of the spacer
Data Source
AI summary
An exemplary embodiment provides a touch device including: a touch panel including: first and second substrates; and a pressure sensor including: a first electrode disposed on the first substrate; a second electrode disposed on the second substrate; an insulating layer disposed between the first and second electrodes; and a spacer, wherein the pressure sensor is configured to transmit a touch signal corresponding to an intensity of pressure applied to the second substrate through the pressure sensor in response to a touch; and a touch controller configured to: acquire touch data at respective nodes from the touch signal; acquire a touch data variation at the respective nodes based on previous touch data and the touch data at the respective nodes; correct the touch data at the respective nodes based on the touch data variation; and acquire a coordinate of the touch location based on the corrected touch data.