Touch Panel With Light-Blocking Layer For Sensitivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing touch panels face challenges in improving detection sensitivity, reducing thickness and weight, and achieving foldability while maintaining high reliability.
Innovation Solution
A touch panel design incorporating a capacitive touch sensor with conductive layers having specific CR values and aperture ratios, positioned between substrates with a light-blocking layer, to enhance detection sensitivity and reduce thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the distance between display panel components and touch sensor electrodes is reduced, then the touch panel thickness is reduced, but detection sensitivity deteriorates due to noise interference
Solution Approach 1:
A light-blocking layer is introduced as an intermediary component between the display panel and the touch sensor. This layer serves dual purposes: it blocks light to improve display quality and creates a controlled distance relationship that reduces noise interference while maintaining thin overall structure. The light-blocking layer acts as a mediator that resolves the contradiction between thinness and detection sensitivity.
Solution Approach 2:
The patent applies different structural characteristics to different regions of the touch panel. The light-blocking layer is strategically positioned in specific areas to provide localized noise reduction and light blocking, while other regions maintain optimized electrode spacing for sensitivity. This localized approach allows the panel to be thin overall while maintaining detection sensitivity in critical areas.
2Weight of stationary object
If the distance between display panel components and touch sensor electrodes is reduced, then the touch panel weight is reduced, but noise interference increases affecting detection accuracy
Solution Approach 1:
The light-blocking layer serves as a mediator that provides noise shielding between the display panel and touch sensor electrodes. By introducing this intermediate layer, the patent achieves weight reduction through compact design while the light-blocking layer provides the necessary noise isolation to maintain detection accuracy.
3Measurement precision
If conductive layers with specific CR values and aperture ratios are used, then detection sensitivity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent specifies particular parameter ranges for the conductive layers, including CR values and aperture ratios, that optimize detection sensitivity. By defining specific parameter ranges rather than exact values, the patent achieves high sensitivity while allowing manufacturing flexibility within those ranges, thus balancing performance with ease of manufacture.
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 design improves detection sensitivity, enables a thinner and lighter touch panel, and allows for foldability while maintaining high reliability and display quality.
Implementation Method 1
The first conductive layer and the second conductive layer form a capacitor
Data Source
AI summary
To increase the detection sensitivity of a touch panel, provide a thin touch panel, provide a foldable touch panel, or provide a lightweight touch panel. A display element and a capacitor forming a touch sensor are provided between a pair of substrates. Preferably, a pair of conductive layers forming the capacitor each have an opening. The opening and the display element are provided to overlap each other. A light-blocking layer is provided between a substrate on the display surface side and the pair of conductive layers forming the capacitor.