Touch Display Panel Mesh Electrode Black Matrix Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing touch display devices using transparent conductive materials for touch electrodes suffer from high resistance, leading to inadequate sensitivity, and metal mesh electrodes are visually noticeable under certain conditions, affecting display quality.
Innovation Solution
An integrated touch display panel with a mesh touch sensing electrode array positioned between pixels, covered by a black matrix, which improves sensitivity and reduces visual noticeability under various ambient light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transparent conductive material is used to fabricate touch electrode, then the touch electrode can be transparent, but the resistance is large causing inadequate sensitivity
Solution Approach 1:
The patent uses metal mesh material instead of transparent conductive material to fabricate the touch electrode. Metal mesh provides lower resistance and better conductivity while maintaining the electrode structure, resolving the contradiction between transparency and sensitivity by using a different material class that doesn't rely on optical transparency.
2Reliability
If metal mesh electrode is used to reduce resistance, then sensitivity is improved, but the metal wires are visually noticeable affecting display effect
Solution Approach 1:
The patent positions the metal mesh touch sensing electrode array in the separating regions between adjacent pixels rather than uniformly across the display area. The black matrix is strategically placed to cover the electrode wiring in these separating regions, making the electrodes locally invisible while maintaining their functionality for touch detection.
Solution Approach 2:
The black matrix serves as an intermediary element that covers the metal mesh electrode wiring in the separating regions. It mediates between the need for visible display quality and the presence of conductive electrodes, hiding the electrodes from view while allowing them to function for touch sensing.
3Area of stationary object
If metal wires run through light transmissible region of pixels, then touch detection coverage is improved, but the wires are visually noticeable under dark images or intense ambient light
Solution Approach 1:
The patent segments the display area into pixel regions and separating regions. The metal mesh touch sensing electrode array is specifically positioned in the separating regions between pixels, while the black matrix further segments and covers the electrode wiring in these areas. This segmentation allows touch detection coverage while hiding the electrodes from visual notice.
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 detection sensitivity and maintains a clear display by hiding the touch sensing electrode wiring within the black matrix, eliminating visual interference and improving overall display effect.
Implementation Method 1
The black matrix at least partially covers an orthogonal projection of the mesh electrodes to the black matrix
Data Source
AI summary
An integrated touch display panel and display device are disclosed. The integrated touch display panel comprises a touch emitting electrode array, a touch sensing electrode array, a black matrix, and color filters. The forward projection of any one of the touch sensing electrodes to the touch emitting electrode array at least partially overlaps with any one of the touch emitting electrodes. The black matrix comprises a plurality of black matrix rows and a plurality of black matrix columns. The color filters are separated by each of the black matrix rows and each of the black matrix columns, to form a plurality of array arrangements of display pixels. The touch sensing electrode is a mesh electrode, and the black matrix at least partially covers an orthogonal projection of the mesh electrodes to the black matrix.