Curved Display Corner Electrode Shape for Touch Sensitivity
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Solution Overview
Problem
Conventional display devices face challenges in achieving uniform touch sensitivity, particularly in the corner areas where the curved shape of the screen can lead to aesthetic design issues and reduced touch recognition accuracy.
Innovation Solution
The display device incorporates a substrate with a touch area featuring corner touch areas, where the common electrodes and touch link lines are designed with distinct shapes and intervals to enhance touch sensitivity, allowing for improved recognition and natural curvature of the screen corners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the corner area of the housing and cover window is formed with a curved shape, then aesthetic design is improved, but touch sensitivity and recognition accuracy in the corner area deteriorate
Solution Approach 1:
The patent applies different shapes of common electrodes specifically in the corner touch area compared to other areas. The first common electrodes in corner regions have curved shapes matching the curved housing and cover window, while other common electrodes have different shapes. This local differentiation maintains aesthetic design while optimizing touch sensitivity in the corner area.
2Measurement precision
If the common electrodes in corner touch area are given different shapes, then touch sensitivity in corner area is improved, but device complexity increases
Solution Approach 1:
The patent segments the touch area into corner touch areas and other touch areas, with different common electrode shapes assigned to each segment. The first common electrodes are arranged in corner regions with curved shapes, while second common electrodes are arranged in other regions with different shapes. This segmentation allows optimized touch sensitivity in corner areas without making the entire device overly complex.
Data Source
AI summary
A display device is disclosed, which has excellent touch sensitivity due to a corner area of a screen, wherein the corner area is formed to be curved. The display device comprises a substrate including a touch area having a corner touch area; a plurality of gate lines arranged on the substrate in a first direction; a plurality of data lines arranged in a second direction crossing the first direction; a plurality of pixel areas defined by crossing the plurality of gate lines and the plurality of data lines; a plurality of common electrodes arranged to overlap at least one pixel area; and a plurality of touch link lines electrically connected with the plurality of common electrodes and extended in a direction parallel with the first direction or the second direction, wherein, among the plurality of common electrodes, the first common electrodes arranged on the corner touch area have shape different from that of the second common electrodes arranged on the other touch area except the corner touch area.