Light Diffusion Layer for Non-Rectangular Display Edge Quality
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Solution Overview
Problem
Display panels with non-rectangular shapes, such as round or polygonal shapes, suffer from jagged edges and color distortion due to the serrated exterior contour of subpixels nearest to the edge, affecting display quality.
Innovation Solution
A display panel with a light diffusion layer comprising a plurality of light diffusers that diffuse light from subpixels nearest to the edge, creating a smooth exterior contour and true color representation by emitting diffused light outside the subpixel region, thereby enlarging the effective display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If display panels are made in non-rectangular shapes (round, polygonal, triangular), then shape diversity and adaptability are improved, but jagged edges and color distortion occur due to serrated exterior contour of subpixels
Solution Approach 1:
The invention divides the light emission area into multiple sub-regions by introducing black matrix regions between adjacent subpixels at the edge. This segmentation allows independent control of light emission in different areas, enabling the creation of smooth exterior contours even when subpixels are arranged in non-rectangular patterns. The black matrix regions act as separators that prevent light leakage and create sharp boundaries for the smooth contour effect.
Solution Approach 2:
The invention applies different structural characteristics to different regions of the display panel. Specifically, edge subpixels are equipped with black matrix regions and adjusted light emission characteristics compared to central subpixels. This local differentiation allows the edge areas to contribute to smooth exterior contours while central areas maintain normal subpixel structure, thus achieving overall shape diversity without sacrificing edge quality.
2Adaptability or versatility
If subpixels are arranged to form non-rectangular outlines, then design flexibility is improved, but color distortion occurs at the intersection of display and non-display areas
Solution Approach 1:
The invention extracts and removes light emission capability from specific problematic regions by introducing black matrix regions at edge subpixels. By taking out the light emission function from areas that would otherwise cause color distortion (such as intersections of display and non-display areas), the invention prevents color errors while maintaining the desired non-rectangular outline shape.
Solution Approach 2:
The invention implements localized structural modifications at edge subpixels, including black matrix regions and adjusted light emission characteristics. These local quality changes ensure that problematic areas (intersections, edges) have different optical properties than central areas, preventing color distortion while allowing overall design flexibility for non-rectangular shapes.
3Manufacturing precision
If light emission is restricted to precise subpixel regions, then color accuracy is improved, but jagged edges appear at the display panel boundary
Solution Approach 1:
The invention segments the light emission control into multiple zones: central subpixels maintain precise light emission for color accuracy, while edge subpixels incorporate black matrix regions that segment and control light emission to create smooth exterior contours. This multi-zone segmentation strategy simultaneously achieves both color accuracy and smooth edge shapes.
Solution Approach 2:
The invention introduces asymmetric structural characteristics between edge subpixels and central subpixels. Edge subpixels have black matrix regions and modified light emission patterns that differ from central subpixels. This asymmetry allows edge areas to form smooth contours while central areas maintain precise color reproduction, resolving the contradiction between edge shape and color accuracy.
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 jagged edges and color distortion, providing a smooth edge and accurate color representation in non-rectangular display panels.
Implementation Method 1
a light diffusion layer on the base substrate and comprising a plurality of light diffusers separated from each other. Each of the plurality of light diffusers is configured to diffuse light emitted from the one of the plurality of subpixels nearest to the edge of the display area
Data Source
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AI summary
A display panel has a display area and an array of a plurality of subpixels in the display area. The display panel includes a base substrate (10) and a light diffusion layer (20) on the base substrate (10). The light diffusion layer (20) includes a plurality of light diffusers (D) separated from each other. Each of the plurality of light diffusers (D) is configured to diffuse light emitted from the one of the plurality of subpixels nearest to an edge of the display area. A portion of diffused light emits out of the each of the plurality of light diffusers (D) outside a region corresponding to the one of the plurality of subpixels nearest to the edge of the display area.