Display Panel Metal Mesh Dimming Structure Light Efficiency
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Solution Overview
Problem
The existing touch display panels have poor light emitting efficiency, particularly at night, due to their structural design.
Innovation Solution
A display panel design featuring a protective layer, a metal mesh layer, and a dimming structure layer with microstructures such as light transmissive metal bodies, two-dimensional photonic crystals, and micro-lenses, arranged to intersect and form vacant regions, which adjusts the light emitting effect by changing the light transmission direction and improving light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a metal mesh layer is formed after encapsulation layer deposition to create on-cell TP structure, then the display thickness is greatly reduced, but the light emitting efficiency becomes poor
Solution Approach 1:
The patent segments the metal mesh layer into intersecting first and second metal traces that form vacant regions, allowing light to pass through these regions while maintaining the touch function. This segmentation resolves the contradiction by creating light transmission paths within the metal mesh structure itself.
Solution Approach 2:
The patent introduces a dimming structure layer with microstructures positioned specifically within the vacant regions of the metal mesh. This local quality enhancement adjusts light emission characteristics in specific areas (vacant regions) without affecting the overall metal mesh structure, thereby improving light emitting efficiency while maintaining the thin profile.
2Adaptability or versatility
If metal traces are arranged to form touch electrodes, then touch functionality is achieved, but light blockage occurs reducing light emitting efficiency
Solution Approach 1:
The metal traces are segmented into a mesh pattern with vacant regions, creating pathways for light transmission while maintaining continuous touch electrode coverage. This segmentation allows both touch functionality and light emission to coexist.
Solution Approach 2:
The dimming structure layer with microstructures acts as an intermediary element positioned within the vacant regions. It mediates between the metal mesh layer (for touch function) and the light emission requirement, optimizing light transmission while maintaining touch sensitivity.
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 design enhances light emitting efficiency and uniformity by spacing microstructures within vacant regions, avoiding light blockage and improving light emission balance across the panel.
Implementation Method 1
each of the microstructures comprises at least one of light transmissive metal bodies, two-dimensional photonic crystals, and micro-lenses
Implementation Method 2
each of the microstructures comprises at least one of light transmissive metal bodies, two-dimensional photonic crystals, and micro-lenses
Implementation Method 3
the metal mesh layer comprises a plurality of first metal traces extending along a first direction and a plurality of second metal traces extending along a second direction, the first metal traces and the second metal traces intersect to form a plurality of vacant regions
Data Source
AI summary
A display panel including a touch function structure, wherein the touch function structure includes a protective layer, a metal mesh layer, and a dimming structure layer. The metal mesh layer comprises first metal traces and second metal traces, and the first metal traces and the second metal traces intersect to form vacant regions; the dimming structure layer comprises microstructures for adjusting a light emitting effect of the display panel, and an orthographic projection of each of the microstructures on an encapsulation layer is located within an orthographic projection of each of the vacant regions on the encapsulation layer.