Color Filter Substrate with Varying Transparent Layer Thickness
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Solution Overview
Problem
Current display technologies face challenges in achieving high transmittance for transparent displays, which is crucial for applications like vehicle windshields and smart refrigerators, as existing solutions do not effectively maximize light transmission across different colors.
Innovation Solution
A color filter substrate with a base plate, a color filter layer comprising multiple rows of color resist units with at least three different colors, and a transparent layer with varying thicknesses corresponding to each color resist unit, ensuring optimal cell thickness for maximum light transmittance. The color filter substrate is integrated into a liquid crystal display panel, where the transparent layer's thickness is tailored to each color resist unit, allowing for maximum light transmission across different wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional color filter layer with uniform thickness is used, then the manufacturing process is simple, but the transmittance of different colors cannot be optimized simultaneously
Solution Approach 1:
The color filter layer is designed with different thicknesses for different color regions (red, green, blue). Specifically, the red color filter layer has a first thickness, the green color filter layer has a second thickness, and the blue color filter layer has a third thickness. This local variation in thickness allows each color to achieve optimal light transmittance while maintaining overall device functionality.
2Illumination intensity
If the color filter layer thickness is increased to improve color saturation, then the light transmittance decreases, reducing transparent display performance
Solution Approach 1:
The patent applies parameter changes by varying the thickness parameter of the color filter layer for different colors. The red, green, and blue color filter layers have different thicknesses (first, second, and third thicknesses respectively), which are optimized to achieve maximum light transmittance for each color while maintaining color saturation. This parameter optimization enables transparent display functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration maximizes transmittance for each color, resulting in a transparent display with enhanced light passage, thereby improving the overall transparency and user experience of the display panel.
Implementation Method 1
a first distance between a surface of the base plate close to the color resist units and a surface of the transparent layer away from the color resist units is different for color resist units of different colors
Implementation Method 2
Δn is a birefringence of liquid crystals
Data Source
AI summary
A color filter substrate, a manufacturing method thereof, and related devices. The color filter substrate includes: a base plate; a color filter layer on the base plate; and a transparent layer on a side of the color filter layer away from the base plate. Specifically, the color filter layer includes multiple rows of color resist units, wherein color resist units in each row have at least three different colors. In addition, a first distance between a surface of the base plate close to the color resist units and a surface of the transparent layer away from the color resist units may be different for color resist units of different colors.