Self-capacitive Touch Display Panel Data Line Integration
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Solution Overview
Problem
Conventional self-capacitive touch display panels have complex fabrication processes and high costs due to the need for separate metal layers and wiring for touch-control units, leading to increased panel thickness.
Innovation Solution
The array substrate integrates touch-control units with pixel units, using data lines as wires for touch-control signals, eliminating the need for separate metal layers and simplifying the fabrication process by reusing data lines for both display and touch-control functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate metal layer and wiring are added for touch-control units, then touch-control function is achieved, but fabrication process becomes complex and cost increases
Solution Approach 1:
The data lines are designed to serve dual purposes: as signal transmission lines for display functions and as wiring for touch-control units. This multi-functionality eliminates the need for separate metal layers and wiring, thereby simplifying the fabrication process while maintaining touch-control capability
Solution Approach 2:
The patent merges the display wiring and touch-control wiring into a single data line structure. By combining these previously separate functions into one integrated wiring system, the fabrication process is simplified and manufacturing cost is reduced without compromising either function
2Adaptability or versatility
If a separate metal layer and wiring are added for touch-control units, then touch-control function is achieved, but panel thickness increases
Solution Approach 1:
By making data lines serve as both display wiring and touch-control wiring, the patent eliminates the need for additional separate metal layers and wiring structures that would increase panel thickness. The existing data line structure is reused, maintaining a thin panel profile
3Reliability
If touch panel and display panel are manufactured separately, then each function is optimized, but fabrication cost increases and production efficiency decreases
Solution Approach 1:
The patent combines the touch-control units with the display panel structure, integrating both functions into a single panel manufacturing process. This eliminates the need for separate manufacturing of touch and display panels, thereby improving production efficiency and reducing fabrication cost while maintaining functional optimization through the integrated design
Data Source
AI summary
A self-capacitive touch display panel and an array substrate thereof are provided in the disclosure. The array substrate includes a substrate, where gate lines, data lines, and a common electrode layer are provided on the substrate, and the gate lines and the data lines are insulated from each other and cross each other to define a plurality of pixel units arranged in an array; the pixel unit includes a pixel thin film transistor and a pixel electrode; the common electrode layer includes a plurality of touch-control units; a plurality of touch-control-driving thin film transistors are further provided on the substrate; and the touch-control unit is connected to drains of at least two touch-control-driving thin film transistors, the gates of the two touch-control-driving thin film transistors are connected to different gate lines, and the sources of the two touch-control-driving thin film transistors are connected to different data lines.