In-Cell Display Touch and Data Lines on One Conductive Layer
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Solution Overview
Problem
Existing in-cell type display devices face challenges in integrating touch sensing lines and source-drain electrodes on the same layer, which complicates manufacturing processes and increases costs.
Innovation Solution
A display device design where the touch sensing line and data line are disposed on the same layer, with a specific opening area shape and manufacturing method involving eight mask processes to form the pixel electrode, common electrode, and other components, reducing the need for additional layers and masks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If touch sensing line and source-drain electrode are integrated on the same layer, then device complexity is reduced and manufacturing process is simplified, but manufacturing precision becomes more difficult to maintain
Solution Approach 1:
The patent combines the touch sensing line and source-drain electrode into the same conductive layer, eliminating the need for separate layers and reducing overall device complexity. This merging approach simplifies the manufacturing process by reducing the number of deposition and patterning steps required.
Solution Approach 2:
The conductive layer is segmented into different functional regions: the source-drain electrode region for data transmission and the touch sensing line region for touch detection. This segmentation allows each component to maintain its specific function while sharing the same physical layer, resolving the conflict between integration and functional differentiation.
2Illumination intensity
If opening area length in row direction is made longer than in column direction, then transmittance and viewing angles are improved, but device complexity increases due to asymmetric design
Solution Approach 1:
The opening area is designed with asymmetric dimensions where the length in the row direction exceeds the length in the column direction. This asymmetric geometry optimizes light transmission properties and viewing angles by creating favorable optical paths while maintaining compact device dimensions.
Solution Approach 2:
The asymmetric opening area shape provides locally optimized optical properties in different directions. The longer row direction enhances horizontal transmittance and viewing angle, while the shorter column direction maintains vertical compactness, creating directionally differentiated performance characteristics.
Data Source
AI summary
Disclosed is a display device and a method of manufacturing the display device. The display device includes a pixel electrode disposed in an opening area; a common electrode having at least one region that overlaps the pixel electrode in the opening area; a gate line extending along a row direction in a non-opening area that surrounds the opening area; a data line extending along the non-opening area in a column direction that is perpendicular to the row direction; and a touch sensing line extending in the column direction across the opening area, wherein the opening area may have a shape in which a length of the opening area in the row direction is longer than a length of the opening area in the column direction.