Touch Display Panel Integrated Electrode Structure
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Solution Overview
Problem
Conventional touch display panels have a thick structure due to separate manufacturing and bonding of touch and display panels, which does not meet the requirements for small and compact products.
Innovation Solution
A touch display panel design that includes a display module, a polarizer, and two touch electrode structures disposed between the polarizer and the substrate, reducing the number of substrates and thickness, with the touch electrode structures being positioned under the polarizer to minimize visibility and enhance visual effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the touch panel and display panel are separately manufactured and bonded to form the touch display panel, then the manufacturing process is simplified and each component can be optimized independently, but the thickness and weight of the final product increase
Solution Approach 1:
The patent combines the touch panel and display panel into a single integrated structure where the touch electrode structures are formed directly on the display module substrate. This merging eliminates the need for separate bonding processes and reduces the overall thickness by removing intermediate adhesive layers and separate substrate structures, while maintaining independent optimization capabilities through modular electrode design.
2Ease of operation
If the touch electrode structures are disposed on the polarizer, then the touch functionality is achieved, but the electrode structures become visible and degrade the visual appearance
Solution Approach 1:
The patent moves the touch electrode structures from the polarizer layer to the display module substrate layer, effectively changing the dimensional positioning within the multi-layer structure. This repositioning places the electrodes behind the polarizer from the viewer's perspective, making them invisible while preserving touch functionality. The electrodes remain electrically functional while being optically concealed by the polarizer layer.
3Reliability
If multiple substrates are used in the touch display panel structure, then each substrate can provide specific functions (protective, sensing, display), but the overall weight and thickness increase
Solution Approach 1:
The patent merges multiple substrate functions into a single display module substrate. The substrate simultaneously provides structural support, serves as the base for touch electrode formation, and integrates with the display structure. This consolidation eliminates redundant substrates and adhesive layers, reducing weight while maintaining protective and sensing functions through functional integration rather than physical separation.
Data Source
AI summary
A touch display panel includes a display module, a polarizer, a first touch electrode structure and a second touch electrode structure. The display module has a substrate. The polarizer is disposed opposite to the display module. The first touch electrode structure and the second touch electrode structure are electrically insulated to each other and are disposed between the polarizer and the substrate of the display module.