Liquid Crystal Display Light-Shielding Layer Merging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal displays face issues with color mixture when viewed from an oblique angle and non-display areas appearing brighter than the display area when turned off, which affect the viewing experience and display quality.
Innovation Solution
A liquid crystal display structure that includes a first substrate with a switching element and pixel electrode, a second substrate with an insulating substrate and color filters covered by an overcoat layer and light-shielding layer, and a sealing member to maintain a cell gap, with recess portions in the insulating films and light-shielding layer to enhance bonding strength and prevent moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If light-shielding layers are disposed between color filters to prevent color mixture in oblique visual field, then color mixture prevention is improved, but device complexity increases due to additional layers
Solution Approach 1:
The patent combines the light-shielding function and color filter function into a single integrated layer. The color filter layer itself is designed to provide light-shielding properties, eliminating the need for separate light-shielding layers between color filters. This merging approach prevents color mixture while reducing overall device complexity.
Solution Approach 2:
The color filter layer is designed to serve multiple functions: it acts as both a color filtering element and a light-shielding layer. By making the color filter layer multi-functional, the patent eliminates the need for additional dedicated light-shielding layers, thus preventing color mixture without increasing device complexity.
2Adaptability or versatility
If overcoat layer and light-shielding layer are added to cover color filter, then viewing angle performance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent merges the overcoat layer and light-shielding layer into a single integrated structure. By combining these functions into one layer, the number of interfaces and alignment points is reduced, thereby lowering manufacturing precision requirements while maintaining improved viewing angle performance.
3Illumination intensity
If different coloring layers and light-shielding coloring layers are stacked on non-display area, then brightness uniformity is improved, but device complexity increases
Solution Approach 1:
The patent combines the coloring layers and light-shielding coloring layers into a single integrated layer in the non-display area. This merging approach achieves brightness uniformity by preventing light leakage while reducing the overall structural complexity compared to stacking multiple separate layers.
Data Source
AI summary
According to one embodiment, a liquid crystal display device includes a first substrate including a switching element and a pixel electrode, a second substrate including an insulating substrate, an organic layer which covers the insulating substrate in a non-display area in a shape of a frame surrounding a display area and comprises a first recess portion formed therein, and a light-shielding layer which covers the first recess portion, a sealing member which attaches the first substrate and the second substrate in the non-display area and a liquid crystal layer disposed in a space surrounded by the first substrate, the second substrate and the sealing member.