Touch Screen Electrode Patterns for Display Stripe Elimination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Capacitive touch screens using Single-layer On Cell (SLOC) technology exhibit alternating dark and bright stripes when viewed from certain angles due to light reflection from wires, adversely affecting the display effect.
Innovation Solution
The touch screen design includes a substrate with multiple sub-regions, each containing touch electrodes of different patterns, where sub-electrode wires extend in different directions to prevent consecutive light reflection, optimizing the display by interrupting these stripes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SLOC technology is used with uniform touch electrode patterns, then the manufacturing process is simple and production efficiency is high, but alternating dark and bright stripes appear when viewed from certain angles due to light reflection
Solution Approach 1:
The patent divides the touch screen into multiple sub-regions, where each sub-region contains touch electrodes with identical patterns. However, adjacent sub-regions use different patterns (e.g., different orientations or arrangements of the polyline shapes). This local differentiation disrupts the uniform light reflection across the entire screen while maintaining consistent manufacturing processes within each sub-region, thereby eliminating the alternating dark and bright stripes without significantly complicating production.
2Ease of manufacture
If sub-electrode wires are arranged in parallel lines, then the manufacturing process is simplified, but light reflection from consecutive wires creates alternating dark and bright stripes
Solution Approach 1:
The patent introduces asymmetry in the arrangement of sub-electrode wires across different sub-regions. While wires within a single sub-region may remain parallel and uniformly arranged, adjacent sub-regions feature wires with different orientations, bending angles, or polyline configurations. This asymmetric arrangement prevents consecutive parallel wires from reflecting light in the same direction, thereby eliminating the alternating dark and bright stripes while maintaining manufacturing simplicity through standardized sub-region templates.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively eliminates the alternating dark and bright stripes, enhancing the display effect by ensuring sub-electrode wires do not reflect light in the same direction, thereby improving the visual appearance of the touch screen.
Implementation Method 1
a part of wires reflect light while a part of wires does not reflect light
Data Source
AI summary
A touch screen and a touch device are provided. The touch screen includes a substrate and a plurality of touch electrodes on the substrate arranged at a same layer and in a matrix. Each of the plurality of touch electrode includes at least two sub-electrode wires, and the at least two sub-electrode wires are connected in sequence to form a polyline-shape. The substrate includes a plurality of sub-regions, each of the plurality of sub-region includes at least one touch electrode, and the at least one touch electrodes at a same sub-region are of an identical pattern. The plurality of sub-regions includes at least two sub-regions, and respective touch electrodes of the at least two sub-regions are of different patterns.