Liquid Crystal Display Color Filter Openings for Luminance
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Solution Overview
Problem
Existing liquid crystal display devices face challenges in enhancing luminance while maintaining color reproducibility and aperture ratio, as forming openings in color filters increases manufacturing costs and can degrade video quality due to downsized sub-pixels and complex pixel designs.
Innovation Solution
A liquid crystal display device with a matrix arrangement of pixels, each comprising three sub-pixels with different color filters, where openings are strategically formed in the color filter portions of pixel sets to distribute light evenly, allowing for bright video display without complicating pixel designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If openings are formed in color filters to enhance luminance, then luminance is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies local quality by forming openings only in specific color filter portions (e.g., green or blue) rather than all color filters, and only in specific pixels within a pixel set. This selective approach enhances luminance in targeted areas while avoiding the need to complicate manufacturing processes across the entire display structure.
Solution Approach 2:
The patent segments the pixel array into pixel sets, where only certain pixels within each set contain openings in their color filters. This segmentation allows the display to achieve enhanced luminance through openings while maintaining simpler manufacturing for the majority of pixels that do not require openings.
2Illumination intensity
If openings are formed in color filters to enhance luminance, then luminance is improved, but color reproducibility deteriorates
Solution Approach 1:
By forming openings only in specific color filter portions (such as green or blue) and not in all color filters, the patent minimizes the impact on overall color reproducibility. The selective placement of openings ensures that color accuracy is preserved in areas where openings are not present, while still achieving luminance enhancement where needed.
Solution Approach 2:
The patent divides the display into pixel sets with different configurations - some pixels have openings while others do not. This segmentation allows the system to balance luminance enhancement with color reproducibility by ensuring that not all pixels have openings, thereby maintaining color accuracy across the overall display.
3Quantity of substance
If sub-pixels are downsized to increase pixel density, then pixel density is improved, but aperture ratio decreases
Solution Approach 1:
The patent preliminarily increases the aperture ratio of specific sub-pixels by forming openings in their color filters before final assembly. This preliminary action allows certain sub-pixels to have larger effective light transmission areas, compensating for the downsizing of other sub-pixels and maintaining overall aperture ratio while achieving high pixel density.
Solution Approach 2:
The patent changes the aperture ratio parameter selectively for specific sub-pixels containing openings, rather than uniformly across all sub-pixels. This parameter change allows the display to achieve high pixel density through sub-pixel downsizing while maintaining adequate aperture ratio in specific areas where openings are present.
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
The solution enables a bright video display with uniform luminance and high color reproducibility, avoiding the downsizing of sub-pixels and the increase in source driver pins, source lines, and TFTs, thus maintaining efficient manufacturing and video quality.
Implementation Method 1
each of the pixels having three sub-pixels formed with different color filter portion in hue from each other
Data Source
AI summary
The present application discloses a liquid crystal display device for displaying a video on a display surface with pixels arranged in a matrix. Each of the pixels has three sub-pixels formed with different color filter portions in hue. The display surface includes pixel sets. Each of the pixel sets is defined to include two or three of the pixels next to each other in at least one of the vertical and horizontal directions. An opening is formed on one of the color filter portions every hue in each of the pixel sets.