Display Panel Touch Electrode Gap for Electric Field Interference
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Solution Overview
Problem
Existing display panels face challenges in achieving satisfactory display effects due to interference from electric fields between scan signal lines and pixel electrodes, which affects liquid crystal alignment and display quality.
Innovation Solution
The proposed array substrate design includes a substrate with pixel electrodes and a touch electrode layer, where the first gap between adjacent touch electrode cells is positioned between both ends of a pixel electrode along the pixel column direction, separating the scan signal lines and the first gaps to prevent electric field interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scan signal lines are positioned between adjacent pixel electrodes to enable signal routing, then electrical connectivity is achieved, but electric field interference occurs between scan signal lines and pixel electrodes affecting liquid crystal alignment
Solution Approach 1:
The patent extracts the harmful electric field interference by repositioning the scan signal lines from between pixel electrodes to between touch electrode cells. This separation removes the source of interference from the pixel electrode region, eliminating the harmful effect while preserving electrical connectivity through the alternative positioning arrangement.
Solution Approach 2:
The patent changes the spatial arrangement dimension by positioning scan signal lines in the gap between touch electrode cells rather than between pixel electrodes. This dimensional repositioning in the electrode cell gap space allows signal routing without creating electric field interference in the pixel electrode region, resolving the contradiction through spatial redesign.
2Device complexity
If touch electrode cells are positioned adjacent to pixel electrodes for compact design, then device integration is improved, but electric field interference affects display quality
Solution Approach 1:
The patent extracts the interference problem by separating scan signal lines from the pixel electrode region and placing them in the gap between touch electrode cells. This maintains the compact integration of touch electrode cells with pixel electrodes while removing the harmful electric field interaction by relocating the signal routing path.
3Illumination intensity
If aperture ratio is increased to improve display effect, then light transmission is enhanced, but electric field interference from scan signal lines must be eliminated
Solution Approach 1:
The patent extracts the harmful electric field interference by relocating scan signal lines to the gap between touch electrode cells, away from pixel electrodes. This enables increased aperture ratio for improved light transmission and display effect, as the interference source has been removed from the optical path region.
Data Source
AI summary
The present disclosure provides a display panel and an array substrate. The array substrate includes a plurality of pixels forming a plurality of pixel columns, and one pixel includes a plurality of sub-pixels. The array substrate includes: a substrate; a pixel electrode layer, including a plurality of pixel electrodes in one-to-one correspondence with the plurality of sub-pixels; a touch electrode layer, disposed at a side of the pixel electrode layer, where the touch electrode layer includes a plurality of touch electrode cells spaced apart and mutually insulated; where there is a first gap between two t touch electrode cells that are adjacent in a direction of the pixel columns, and the first gap is located between both ends of a pixel electrode along the direction of the pixel columns.