Net-Shaped Color Filter Design for LCD Thickness Uniformity
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Solution Overview
Problem
Conventional liquid crystal display panels face challenges in achieving uniform thickness due to varying thicknesses of color filters, which affect the display's performance and image quality.
Innovation Solution
The implementation of a display panel design featuring a net-shaped first color filter with openings and an island-shaped second color filter disposed within these openings, along with spacers that overlap the net-shaped filter, ensures thickness uniformity by strategically placing main and sub-spacers between pixel areas and color filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional color filters with varying thicknesses are used, then color display functionality is achieved, but thickness uniformity of the display panel deteriorates
Solution Approach 1:
The color filter is divided into multiple segments: a first color filter layer and a second color filter layer with different thicknesses. By segmenting the color filter into distinct layers with specific thickness distributions, the patent achieves overall thickness uniformity while maintaining the necessary color display functionality through the combined structure.
Solution Approach 2:
Different regions of the color filter structure are assigned different thicknesses locally. The first color filter layer has a thickness that compensates for the varying thickness requirements of different color regions, while the second color filter layer provides additional color filtering. This local differentiation in thickness allows the overall panel to maintain uniform thickness despite the inherent thickness variations required for different color filters.
2Manufacturing precision
If spacers are disposed on color filters with different thicknesses, then spacing function is achieved, but spacer thickness uniformity deteriorates
Solution Approach 1:
The color filter structure is prepared in advance with a specific thickness distribution pattern before spacer placement. The first and second color filter layers are formed with predetermined thicknesses that create a uniform overall thickness profile. This preliminary preparation of the color filter structure ensures that when spacers are subsequently placed on the color filter, they experience a uniform underlying thickness, thereby achieving spacer thickness uniformity and simplifying the spacer placement process.
Data Source
AI summary
A display panel and a liquid crystal display device, in which one of a plurality of color filters is a net-shaped color filter and the other color filters are island-shaped color filters, are provided. According to this approach, a thickness uniformity of the display panel may be achieved.