Touch Control Structure With Elastic Supports For Precision Detection
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Solution Overview
Problem
Capacitive type touch control display panels have low touch detect precision and accuracy, which affects user experience and limits their application.
Innovation Solution
A touch control structure comprising a first touch electrode and a second touch electrode with reversibly deformable elastic supports, where the electrodes' overlapping areas and spacing distances change upon touch, allowing for precise capacitance detection and pressure determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If capacitive type touch control display panels are used, then the device can provide touch control functionality, but the touch detect precision and accuracy are low
Solution Approach 1:
The touch control structure is divided into multiple first touch control blocks and second touch control blocks arranged in a matrix pattern. Each block independently detects touch signals, allowing parallel processing and improving overall detection precision without requiring a single complex sensing system
Solution Approach 2:
The patent introduces a vertical dimension by stacking first and second touch control blocks at different heights with overlapping projections. This three-dimensional arrangement creates multiple capacitance sensing paths between corresponding blocks, enhancing detection accuracy through spatial multiplication of sensing elements
2Measurement precision
If the overlapping area between touch electrodes is increased to improve detection accuracy, then the touch detect accuracy improves, but the spacing distance between electrodes decreases which may cause interference
Solution Approach 1:
By arranging touch control blocks in stacked layers with overlapping projections, the patent achieves large effective overlapping area through vertical stacking rather than horizontal expansion. The first and second touch control blocks occupy different vertical positions while their projections overlap in the horizontal plane, increasing capacitance coupling without requiring electrodes to be extremely close laterally
Solution Approach 2:
The patent applies different structural characteristics to different regions: the overlapping portions of adjacent blocks create strong capacitance coupling for signal detection, while the margin portions provide spacing and electrical isolation. This local differentiation allows simultaneous achievement of strong coupling where needed and interference prevention where required
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
Enhances sensitivity, accuracy, and precision of touch detection by increasing the overlapping area and decreasing spacing distance when a touch occurs, improving user experience and expanding application scope.
Implementation Method 1
one or more reversibly deformable elastic supports between and in direct contact with a respective one of the plurality of first touch control blocks and a respective one of the plurality of second touch control blocks
Implementation Method 2
an orthographic projection of the first overlapping portion on a base substrate completely overlaps with an orthographic projection of the second overlapping portion on the base substrate, resulting in a first overlapping area
Data Source
AI summary
A touch control structure is provided. The touch control structure includes a first touch electrode including a plurality of first touch control blocks; a second touch electrode including a plurality of second touch control blocks; and one or more reversibly deformable elastic supports between and in direct contact with a respective one of the plurality of first touch control blocks and a respective one of the plurality of second touch control blocks. When the touch control structure is in a first state without a touch, the respective one of the plurality of first touch control blocks includes a first overlapping portion and a first margin portion abutting the first overlapping portion, and the respective one of the plurality of second touch control blocks includes a second overlapping portion and a second margin portion abutting the second overlapping portion.