Display Panel With Varying Sub-Pixel Thickness
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Solution Overview
Problem
Conventional liquid crystal displays suffer from low brightness and high material costs due to the uniform thickness of photo-resists in color filters, leading to low optical transmittance and inefficient light usage.
Innovation Solution
A display panel design with varying thicknesses of the display medium in sub-pixels, where the first sub-pixel has a greater thickness than the second, third, and fourth sub-pixels, enhancing light-emitting efficiency and reducing power consumption while improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If uniform thickness photo-resists are used in color filters, then manufacturing simplicity is maintained, but optical transmittance is low and brightness is insufficient
Solution Approach 1:
The patent applies local quality by varying the thickness of the display medium in different sub-pixels (red, green, blue, white) rather than using uniform thickness. Specifically, the white sub-pixel has a greater thickness than the color sub-pixels, optimizing light transmission for each sub-pixel type to enhance overall brightness and image quality.
2Productivity
If uniform thickness display medium is used in all sub-pixels, then manufacturing process is simple, but light-emitting efficiency is low and power consumption is high
Solution Approach 1:
The patent implements local quality by configuring different thicknesses of the display medium in different sub-pixels. The white sub-pixel has a greater thickness to maximize light transmission and efficiency, while color sub-pixels have optimized thicknesses for their specific wavelength requirements, thereby improving overall light-emitting efficiency and reducing power consumption.
3Loss of energy
If uniform thickness photo-resists are used, then material usage is consistent, but optical transmittance is low leading to wasted light
Solution Approach 1:
The patent addresses light loss by implementing local quality through varied thickness configuration. The white sub-pixel has a greater thickness of the display medium to maximize light transmission and minimize absorption losses, while color sub-pixels have optimized thicknesses. This reduces overall light loss and improves optical efficiency, with the thickness variation achieved through precise manufacturing control.
Data Source
AI summary
A display panel including a pair of substrates, a color filter layer, and a display medium is provided. The substrates including a plurality of pixels, wherein each pixel at least having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The color filter layer is disposed on one of the substrates and at least has a first color filtering pattern disposed in the first sub-pixel, a second color filtering pattern disposed in the second sub-pixel, a third color filtering pattern disposed in the third sub-pixel, and a fourth color filtering pattern disposed in the fourth sub-pixel. The display medium is disposed between the pair of substrates, wherein the display medium correspondingly disposed in the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel has thicknesses of T1, T2, T3 and T4, respectively, and T1>T2>T3 and T1>T4>T3.