Display Touch Lines on Encapsulation Layer
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Solution Overview
Problem
Traditional capacitive touch sensors in display devices require complex manufacturing processes, leading to increased costs and time, and can suffer from light reflection issues due to intersecting touch lines within the display area.
Innovation Solution
A display device design featuring first and second touch lines on the encapsulation layer, with bridge lines positioned between the substrate and encapsulation, allowing for reduced manufacturing complexity and eliminating the need for additional components to intersect touch lines, thereby simplifying the manufacturing process and preventing light reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional capacitive touch sensors with intersecting touch lines are used, then touch sensing function is achieved, but light reflection occurs and manufacturing complexity increases
Solution Approach 1:
The patent moves the touch lines from the display area to the encapsulation layer, changing the spatial dimension where touch sensing occurs. This dimensional shift allows touch lines to be positioned outside the display area while maintaining touch sensing functionality, thereby eliminating light reflection issues and reducing manufacturing complexity.
Solution Approach 2:
The patent divides the touch sensing function into separate first and second touch lines that are spaced apart and do not intersect. This segmentation eliminates the intersection points that cause light reflection, while still maintaining the capacitive touch sensing capability through the distributed line structure.
2Productivity
If touch lines are positioned within the display area, then touch sensing is enabled, but manufacturing time and cost increase
Solution Approach 1:
The patent merges the touch sensor structure with the encapsulation layer, combining two previously separate components into one integrated structure. This integration eliminates the need for separate touch sensor manufacturing steps, thereby reducing manufacturing time and cost while simplifying the overall device structure.
Solution Approach 2:
The encapsulation layer serves dual functions: protecting the display device and housing the touch sensing lines. This multi-functionality eliminates the need for a separate touch sensor component, reducing device complexity and manufacturing steps.
3Object-affected harmful factors
If additional components are added to intersect touch lines, then light reflection is prevented, but device complexity increases
Solution Approach 1:
The patent extracts the touch lines from the display area and positions them on the encapsulation layer, removing the source of light reflection problems. This extraction eliminates the need for additional components to intersect or block light reflection, thereby reducing device complexity.
Data Source
AI summary
A display device is disclosed. In one aspect, the display device includes a substrate including a display area and a non-display area adjacent to the display area and a display member formed over the substrate in the display area. The display device also includes an encapsulation layer formed over the display member and encapsulating the display member together with the substrate and a plurality of first touch lines formed over the encapsulation layer in the display area. The first touch lines extend in a first direction. The display device further includes a plurality of second touch lines formed on the same layer as the first touch lines in the display area. The second touch lines extend in the first direction and are spaced apart from the first touch lines.