Liquid Crystal Display Panel Blue Pixel Transmittance
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Solution Overview
Problem
Liquid Crystal Display (LCD) panels suffer from yellow discolouration due to low transmittance in the blue pixel region, leading to poor picture quality.
Innovation Solution
The display panel design includes a second substrate with a color resist layer comprising first, second, and third color resists, where the thickness of the third color resist is less than the first or second color resist, increasing the thickness of the liquid crystal cell to enhance transmittance and improve blue light brightness, thereby solving yellow discolouration issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the thickness of the third color resist is the same as the first and second color resists, then the manufacturing process is simple, but the transmittance of blue pixels is low causing yellow discolouration
Solution Approach 1:
The patent applies local quality by making the thickness of the third color resist (blue pixel region) different from the first and second color resists (red and green pixel regions). Specifically, the third color resist is made thinner to increase blue light transmittance, while maintaining uniform thickness for the other color resists. This localized variation in thickness resolves the contradiction by improving blue pixel brightness without complicating the overall manufacturing process.
2Illumination intensity
If the thickness of the third color resist is reduced to increase blue light transmittance, then the transmittance improves, but the color uniformity may be affected
Solution Approach 1:
The patent carefully controls which regions have different thickness characteristics. Only the third color resist (blue pixel region) has reduced thickness, while the first and second color resists maintain their original thickness. This selective local modification ensures that color uniformity is preserved in the red and green regions while improving blue light transmittance where needed.
Solution Approach 2:
The patent changes the thickness parameter of the third color resist specifically to optimize blue light transmittance. By adjusting this physical parameter locally in the blue pixel region while keeping other parameters unchanged, the patent achieves improved transmittance without disrupting the overall color balance and uniformity of the display panel.
3Illumination intensity
If the liquid crystal cell thickness is increased to enhance transmittance, then the blue light brightness improves, but the overall device thickness increases
Solution Approach 1:
The patent achieves the goal of enhancing blue light brightness without increasing overall device thickness by applying local quality modification. Instead of uniformly increasing the liquid crystal cell thickness across all pixels, the patent selectively adjusts the color resist thickness in the blue pixel region. This localized approach improves blue light transmittance while maintaining the original overall device thickness.
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 design increases transmittance in the blue pixel region, improving the brightness of blue light and overall picture quality by ensuring the transmittance formula conditions are met, effectively addressing the yellow discolouration problem.
Implementation Method 1
The color resist layer includes a first color resist, a second color resist, and a third color resist, and a thickness of the third color resist is less than a thickness of the first color resist or a thickness of the second color resist
Data Source
AI summary
The present disclosure provides a display panel, a display device, and a liquid crystal display. The display panel includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The second substrate includes sequentially stacked a basal substrate layer of a array substrate, a gate electrode insulating layer, a color resist layer, a protective layer, and a pixel electrode layer. The color resist layer includes a first color resist, a second color resist, and a third color resist, and a thickness of the third color resist is less than a thickness of the first color resist or a thickness of the second color resist.