Transparent Touch Electrode Pattern Layer for Active Pen Detection
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Solution Overview
Problem
Touch panels face challenges in achieving high optical and electrical performance while maintaining a low cost, especially in supporting active pen functionality without increasing costs.
Innovation Solution
A touch panel design featuring a transparent touch electrode pattern layer with a specific arrangement of touch detection electrodes, including first, second, and third touch detection electrodes, which operate differently in passive and active pen detection stages, integrated into a single-layer structure to enhance sensitivity and uniformity, and a method for driving the panel to detect both passive and active pen inputs effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-layer touch electrode structure is used to support active pen functionality, then the active pen detection capability is improved, but the manufacturing cost and process complexity increase
Solution Approach 1:
The patent makes the transparent touch electrode pattern layer perform multiple functions: it serves as both the touch detection electrode layer and the active pen detection electrode layer. By configuring specific electrode patterns (first, second, and third touch detection electrodes in different arrangements), the same physical layer can detect both passive finger touches and active pen inputs, eliminating the need for separate electrode layers for different input types.
Solution Approach 2:
The patent merges the touch detection function and active pen detection function into a single transparent touch electrode pattern layer. Instead of using separate electrode layers for different detection modes, the invention combines multiple detection capabilities within one layer through strategic electrode positioning and configuration, thereby reducing overall device complexity while maintaining versatility.
2Measurement precision
If multiple touch detection electrode layers are implemented, then both passive touch and active pen detection sensitivity are improved, but the manufacturing yield and cost-effectiveness deteriorate
Solution Approach 1:
The transparent touch electrode pattern layer is designed to serve multiple detection purposes simultaneously. By incorporating first touch detection electrodes (for passive touch), second touch detection electrodes (for active pen), and third touch detection electrodes (for additional sensing points) within the same layer, the structure achieves high detection sensitivity for both input types while maintaining a single-layer architecture that is easier to manufacture with higher yield.
3Ease of manufacture
If a single-layer transparent touch electrode pattern is used, then manufacturing cost and yield are improved, but the ability to support both passive touch and active pen detection deteriorates
Solution Approach 1:
The patent segments the touch electrode pattern into three distinct types of electrodes within the single transparent layer: first touch detection electrodes arranged in a first pattern, second touch detection electrodes arranged in a second pattern, and third touch detection electrodes arranged in a third pattern. This segmentation allows each electrode type to be optimized for specific detection functions while all working together within one manufacturable layer structure.
Solution Approach 2:
Different regions of the transparent touch electrode pattern layer have different electrode configurations tailored to specific detection needs. The first, second, and third touch detection electrodes are positioned and shaped differently to optimize their respective functions for passive touch, active pen, and additional sensing, allowing the single layer to provide locally optimized performance for multiple input types.
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 enables cost-effective production with high yield, maintaining sensitivity and uniformity across the touch panel, supporting both passive touch detection and active pen functionality, thereby improving competitiveness and user interaction.
Implementation Method 1
each of the first touch detection electrodes is configured to operate as a touch scan electrode in a passive touch detection stage, and to operate as a touch sense electrode in an active pen touch detection stage
Data Source
AI summary
Disclosed are a touch panel, a method for driving the same, and a display device, where patterns for performing a touch function are integrated into a transparent touch electrode pattern layer to thereby lower in effect a research and development cost of the product, and the transparent touch electrode pattern layer can be fabricated using only an photomask, so the research and development cost is very low, and the good yield of the product is very high, thus improving the competitiveness of the product. In the transparent touch electrode pattern layer, a plurality of third touch detection electrodes are arranged among touch elements to thereby make up for a blind area of touch between the touch elements, so that both the sensitivity and the uniformity throughout the touch panel can remain constant to thereby support in effect the touch panel with an active pen. Accordingly in an active pen touch detection stage, respective first touch detection electrodes, respective second touch detection electrodes, and respective third touch detection electrodes operate as touch sense electrodes to detect a touch signal transmitted by the active pen.