Display Panel Blue Sub-Pixel Domain Design for Wide Viewing Angle Color Shift
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Solution Overview
Problem
Conventional liquid crystal display (LCD) devices experience color shifts at wide viewing angles due to differences in light transmittance and chromaticity coordinates when viewed from the front versus the sides, leading to poor viewing effects.
Innovation Solution
The display panel design features red and green sub-pixels with four display domains each, and blue sub-pixels with eight domains, divided into two pixel areas with different brightness levels and electrode configurations, where the blue sub-pixels have a greater number of thin film transistors and a specific electrode structure to reduce blue light emission at wide viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MVA LCD divides sub-pixel into multiple domains with liquid crystal molecules tilted toward different directions to achieve wide viewing angles, then viewing angle is improved, but gamma curve offset occurs at wide viewing angles causing color shift
Solution Approach 1:
The patent applies local quality by differentiating the domain structure across color sub-pixels. Blue sub-pixels are divided into 8 domains while red and green sub-pixels are divided into 4 domains each. This non-uniform domain division creates localized optical properties that compensate for the gamma curve offset specifically affecting blue color at wide viewing angles, thereby maintaining color accuracy while preserving wide viewing angle capability
Solution Approach 2:
The patent changes the parameter of domain number from uniform (4 domains for all sub-pixels) to non-uniform (8 domains for blue, 4 domains for red and green). This parameter modification adjusts the optical characteristics of blue sub-pixels to counteract the color shift phenomenon, resolving the contradiction between wide viewing angle and color accuracy
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 minimizes color shifts by adjusting the blue light proportion, ensuring consistent color display across various viewing angles while maintaining light transmittance, thereby improving the viewing experience.
Implementation Method 1
the red sub-pixels, the green sub-pixels, and the blue sub-pixels each comprise a plurality of display domains
Data Source
AI summary
The present application provides a display panel and a display device. A blue sub-pixel of the display panel has more display domains than a red sub-pixel and a green sub-pixel. The blue sub-pixel has a differential design while the red sub-pixel and the green sub-pixel maintain their original designs. Under a precondition of ensuring light transmittance, a lower proportion of light is emitted by the blue sub-pixels in a displayed screen when viewed at wide viewing angles, so that the present application can alleviate a color shift problem at wide viewing angles of a conventional liquid crystal display.