Display Panel Color Resist Thickness Modulation for Transmittance
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Solution Overview
Problem
The challenge is to improve the transmittance of display panels without altering the area size of sub-pixel regions, while also addressing the issue of color shift caused by reducing the thickness of color resists in liquid crystal displays.
Innovation Solution
The solution involves creating a display panel with sub-pixel regions that have a primary and secondary pixel area, where the color resist in the secondary pixel region is thinned to a lesser thickness than in the primary pixel region, forming a first hollowed-out portion, and optionally a second hollowed-out portion in the primary pixel region, to maintain lower brightness in the secondary pixel region and enhance transmittance without causing color shift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the thickness of color resist is reduced to improve transmittance, then transmittance increases, but color shift occurs
Solution Approach 1:
The patent applies local quality by creating different thickness regions within the color resist layer. The first hollowed-out portion is formed only in the secondary pixel region, while the second hollowed-out portion is formed in the primary pixel region with different depth. This local differentiation allows each region to have optimized optical properties - the secondary pixel region gets greater transmittance enhancement while the primary pixel region maintains color accuracy, thus resolving the contradiction between transmittance improvement and color shift prevention.
2Illumination intensity
If the area size of sub-pixel region is increased to improve brightness, then brightness increases, but resolution decreases
Solution Approach 1:
The patent resolves this contradiction by transitioning from a two-dimensional area increase approach to a three-dimensional thickness modulation approach. Instead of enlarging the sub-pixel region area (which would reduce resolution), the invention creates hollowed-out portions that vary the color resist thickness in the vertical dimension. This allows brightness to be enhanced through improved light transmission in the secondary pixel region while maintaining the original sub-pixel area and resolution.
3Illumination intensity
If the thickness of color resist is reduced uniformly to improve transmittance, then transmittance increases, but brightness uniformity deteriorates
Solution Approach 1:
The patent prevents brightness uniformity deterioration by applying different thickness reduction strategies to different regions. The secondary pixel region receives a first hollowed-out portion with greater depth for enhanced transmittance, while the primary pixel region receives a second hollowed-out portion with lesser depth to maintain original brightness characteristics. This localized differentiation ensures that transmittance improvement in one region does not compromise brightness uniformity across the entire pixel.
Data Source
AI summary
The present invention provides a display panel and a manufacturing method Thereof. The display panel includes a plurality of sub-pixel regions distributed in an array. Each of the sub-pixel regions includes a primary pixel region and a secondary pixel region arranged adjacently. Each of the sub-pixel regions is provided with a color resist. The color resist disposed in the secondary pixel region is provided with a first hollowed-out portion, so that a thickness of the color resist disposed in the secondary pixel region is less than a thickness of the color resist disposed in the corresponding primary pixel region, and brightness of the secondary pixel region is less than brightness of the corresponding primary pixel region.