Touch Panel Electrode Curvature Reduces Pattern Visibility
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Solution Overview
Problem
Capacitive touch panels struggle to conceal touch electrode patterns from user visibility, limiting their aesthetic appeal and user experience in modern display devices.
Innovation Solution
The design incorporates a base member with first and second touch electrodes, along with dummy patterns, where the electrodes feature mesh and peripheral patterns with curved or obtuse angles, and overlapping shapes to prevent pattern visibility, while maintaining touch functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If touch electrodes are designed with simple shapes, then manufacturing is easier, but the patterns become easily recognizable by users
Solution Approach 1:
The patent applies curvature to the peripheral borders of touch electrode patterns, replacing straight lines with curved shapes. This curvature makes the patterns less recognizable to users while maintaining the same manufacturing processes, directly addressing the contradiction between ease of manufacture and pattern visibility
Solution Approach 2:
The patent introduces asymmetric design elements in the touch electrode patterns, where peripheral borders have varying curvature and shapes rather than uniform symmetric patterns. This asymmetry disrupts the regularity that makes patterns easily recognizable, while not complicating the manufacturing process
2Object-affected harmful factors
If touch electrodes are designed with complex patterns, then pattern visibility is reduced, but manufacturing becomes more difficult
Solution Approach 1:
The patent applies local quality by modifying only specific portions of the touch electrode patterns (peripheral borders) with curved shapes, while the main grid structure remains simple and regular. This localized modification reduces pattern visibility without requiring complex manufacturing processes for the entire electrode structure
3Object-affected harmful factors
If dummy patterns are added between touch electrodes, then pattern visibility is reduced, but device complexity increases
Solution Approach 1:
The patent merges the dummy patterns with the existing touch electrode structure by using the same material layer and integration process. The dummy patterns are incorporated into the same manufacturing sequence as the functional electrodes, adding visual concealment functionality without creating separate device components or complex assembly steps
Data Source
AI summary
A display apparatus including: a display panel including a base member; a first touch electrode disposed on the base member and extending in a first direction; a second touch electrode including touch patterns spaced apart from one another in a second direction crossing the first direction and a bridge pattern connecting two of the touch patterns adjacent to each other in the second direction, the touch patterns being disposed on the base member and spaced apart from the first touch electrode; and a dummy pattern disposed between the first touch electrode and the second touch electrode. The first touch electrode includes a first mesh pattern and first peripheral patterns protruding from the first mesh pattern, and a peripheral border of the first peripheral patterns has an obtuse angle or a curved shape.