Touch Panel Gap Shielding to Reduce Bright Lines
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Solution Overview
Problem
Traditional touch panels suffer from bright lines in gaps between adjacent touch electrodes due to excessive light reflection, affecting visual experience.
Innovation Solution
Incorporating a first shielding portion between the orthographic projections of adjacent electrode portions on the substrate, with varying distances from the substrate to reduce light reflection and prevent short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a shielding portion is added between adjacent electrode portions to reduce light reflection, then the visual experience is improved, but the device complexity increases
Solution Approach 1:
The shielding structure is divided into multiple portions (first shielding portion and second shielding portion) positioned at different locations. Each shielding portion addresses light reflection in specific gap regions, allowing the problem to be solved in a modular manner that reduces overall complexity while maintaining effectiveness.
Solution Approach 2:
The shielding portion acts as an intermediary element positioned between the adjacent electrode portions. It mediates the light reflection issue by blocking stray light in the gap region without requiring direct modification of the electrode structures themselves, thus solving the problem with minimal impact on existing design.
2Illumination intensity
If the shielding portion is positioned closer to the substrate to improve shielding effect, then the light reflection is reduced, but the risk of short circuit between shielding portion and electrode increases
Solution Approach 1:
The shielding portion is positioned in the thickness direction (vertical dimension) of the touch panel, creating a three-dimensional arrangement. By utilizing the Z-axis dimension rather than only the planar X-Y dimensions, the shielding portion can achieve effective light blocking while maintaining safe horizontal spacing from electrodes to prevent short circuits.
Solution Approach 2:
The shielding portion is strategically positioned only in specific regions where light reflection is problematic (in the gaps between electrodes), rather than uniformly across the entire panel. This localized approach provides effective shielding where needed while minimizing the overall presence of conductive elements that could cause short circuits.
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 shielding portion reduces light reflection in gaps, enhancing user experience and minimizing short circuit risks while optimizing manufacturing efficiency.
Implementation Method 1
the first shielding portion can shield at least a part of a gap between the first electrode and the second electrode. In this way, the amount of the reflected light emitted from the gap is reduced
Data Source
AI summary
Provided are a touch panel and a display apparatus. The touch panel includes a substrate, a touch structure layer, and a first shielding portion. The touch structure layer is provided on one side of the substrate and includes a first electrode portion and a second electrode portion that are provided at intervals along a first direction. The first shielding portion is connected to the first electrode portion, and a distance between the first shielding portion and the substrate is not equal to a distance between the first electrode portion and the substrate. At least a part of an orthographic projection of the first shielding portion on the substrate is located between an orthographic projection of the first electrode portion on the substrate and an orthographic projection of the second electrode portion on the substrate, and the first direction is perpendicular to a thickness direction of the substrate.