Color Filter Plate With Thicker Edge Portions To Reduce Color Shift
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Solution Overview
Problem
Conventional LCD panels experience significant color shift due to misalignment between the array substrate and the color film substrate, especially at large viewing angles, which degrades display performance, and increasing the black matrix width to mitigate this issue reduces light transmittance and aperture ratio.
Innovation Solution
A color filter plate with alternately arranged color filter elements, where each element has thicker edge portions than its body portion, is used, along with a black matrix design that overlaps the edge portions, to reduce color shift while maintaining light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the black matrix width is increased to reduce color shift, then color shift is reduced, but light transmittance and aperture ratio are reduced
Solution Approach 1:
The color filter elements are designed with non-uniform thickness distribution, where edge portions have greater thickness than body portions. This local variation in thickness allows the edges to provide better color filtering and alignment tolerance without requiring increased black matrix width, thereby maintaining light transmittance while reducing color shift.
2Manufacturing precision
If the color filter elements are made smaller to achieve higher resolution, then resolution is improved, but color shift caused by misalignment becomes more severe
Solution Approach 1:
The invention changes the thickness parameter of color filter elements, creating a thickness gradient where edges are thicker than bodies. This parameter modification allows smaller color filter elements to maintain adequate color filtering performance and alignment tolerance, enabling higher resolution without exacerbating color shift issues.
Data Source
AI summary
A color filter plate, a color filter plate fabrication method and a display panel are provided. The color filter plate comprises a substrate and a plurality of color filter elements alternately arranged on the substrate. Each color filter element includes two edge portions and one body portion between the two edge portions. The plurality of color filter elements further comprises a plurality of first color filter elements, and at least one edge portion of each first color filter element is thicker than the body portion of each first color filter element.