Display Panel Touch-Trace Segmentation for Diagonal Defect Reduction
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Solution Overview
Problem
The uneven shape of the touch metal layer on the light-emitting layer of display devices affects the display effect, particularly causing diagonal display defects and inconsistent light reflections at different viewing angles.
Innovation Solution
The display panel design includes a touch trace with alternating first and second segments extending in different directions, featuring slits along the first segment's thickness direction to ensure consistent light emission across multiple light-emitting units, and incorporates protrusion structures on the touch trace to diffuse reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch metal layer is arranged over the light-emitting layer to achieve full-screen touch function, then touch functionality is improved, but display effect deteriorates due to uneven shape causing diagonal defects and inconsistent light reflections
Solution Approach 1:
The touch trace is divided into multiple segments (first segments and second segments) extending in different directions around each light-emitting unit. This segmentation allows the touch electrode to maintain its touch functionality while reducing the impact of its uneven shape on light emission, thereby resolving the contradiction between touch functionality and display effect.
Solution Approach 2:
Slits are selectively formed in the first segments of the touch trace, but not necessarily in all segments. This local modification approach allows the touch electrode to maintain its overall structure and touch functionality while locally adjusting the light reflection characteristics in specific areas to improve display uniformity and reduce diagonal defects.
2Area of stationary object
If the touch trace has an uneven shape distributed around light-emitting units, then touch coverage is improved, but light emission uniformity deteriorates due to inconsistent reflections at different viewing angles
Solution Approach 1:
The touch trace is divided into multiple segments (first segments and second segments) extending in different directions around each light-emitting unit. This segmentation allows the touch electrode to maintain its touch functionality while reducing the impact of its uneven shape on light emission, thereby resolving the contradiction between touch functionality and display effect.
Solution Approach 2:
Slits are selectively formed in the first segments of the touch trace, but not necessarily in all segments. This local modification approach allows the touch electrode to maintain its overall structure and touch functionality while locally adjusting the light reflection characteristics in specific areas to improve display uniformity and reduce diagonal defects.
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
This design enhances the display effect by minimizing diagonal defects and ensuring uniform light emission and reflection, improving the overall visual consistency of the display panel.
Implementation Method 1
The first segment is provided with a first slit that extends through the first segment in its thickness direction... ensuring uniform light emission and reflection
Data Source
AI summary
A display panel includes a substrate, a light-emitting unit, and a touch component. The light-emitting unit is arranged on a side of the substrate, and has multiple first light-emitting units emitting light of a same color. The touch component is arranged on a side of the light-emitting unit away from the substrate, and has a touch trace. The touch trace has a first segment and a second segment. The first segment and the second segment are distributed along a periphery of a same first light-emitting unit. The first segment and the second segment extend in different directions. The first segment is provided with a first slit that extends through the first segment in its thickness direction. Multiple first segments on peripheries of multiple first light-emitting units extend in a same direction.