Display Device Light Shielding Layer Resin Substrate
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Solution Overview
Problem
Higher pixel density in display apparatuses leads to color mixture and luminance deterioration due to reduced pixel pitch, and the proximity of the light shielding layer to the liquid crystal layer can contaminate the liquid crystals.
Innovation Solution
A substrate configuration that includes a first substrate, a translucent coloring layer, a first translucent resin layer in contact with the substrate, a light shielding layer on top of the resin layer, and a second translucent resin layer on top of the light shielding layer, which prevents color mixture and contamination by widening the optical path and separating the light shielding layer from the liquid crystal layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the width of the light shielding layer is increased to prevent color mixture, then color mixture is prevented, but the aperture ratio is reduced, thereby deteriorating luminance
Solution Approach 1:
The patent introduces a new spatial dimension by placing the light shielding layer on the color filter substrate rather than the counter electrode substrate. This repositioning in the vertical stacking direction allows the light shielding layer to prevent color mixture while maintaining a smaller horizontal width, thus preserving aperture ratio and luminance.
2Length of stationary object
If the light shielding layer is arranged closer to the liquid crystal layer to reduce distance, then the distance between light shielding layer and liquid crystal layer is reduced, but components in the light shielding layer may contaminate the liquid crystal layer
Solution Approach 1:
The patent introduces the counter electrode substrate as an intermediary layer between the light shielding layer and the liquid crystal layer. This intermediate substrate physically separates the light shielding layer from direct contact with liquid crystals, preventing contamination while maintaining the reduced distance configuration for optimal optical performance.
3Manufacturing precision
If higher pixel density is achieved to increase definition, then pixel density is improved, but pixel pitch is reduced, causing color mixture
Solution Approach 1:
The patent resolves the color mixture issue arising from reduced pixel pitch by utilizing the vertical dimension. By positioning the light shielding layer on the color filter substrate and extending it along the stacking direction, the invention creates an effective barrier against color mixture without requiring increased horizontal spacing between pixels, thus maintaining high pixel density.
Data Source
AI summary
A display device is provided and includes first substrate having display region and frame region around display region; coloring layer disposed on first substrate; first insulation layer disposed on the coloring layer; light shielding layer disposed in matrix in display region on first insulation layer; and second insulation layer disposed on the light shielding layer, wherein part of first insulation layer in frame region part is in direct contact with first substrate, and part of first insulation layer in frame region extends along one side of first substrate.