Liquid Crystal Display Delta Pixel Transmittance
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Solution Overview
Problem
In high-definition liquid crystal display devices with a delta pixel arrangement, the increased number of video signal lines reduces transmittance and luminance, and existing solutions to decrease the number of video signal lines are complex and not applicable to the delta pixel configuration.
Innovation Solution
The solution involves reducing the number of video signal lines to half by rearranging the pixel structure, where pixels of a specified color are placed adjacent to each other, and saving the black matrix between them, allowing for continuous formation of blue and red color filters without a black matrix between blue pixels, thereby improving light transmittance and luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of video signal lines is increased to support high definition, then the resolution is improved, but the transmittance and luminance are reduced
Solution Approach 1:
The patent extracts and eliminates the black matrix from specific regions where adjacent pixels of the same color are located. By removing this unnecessary component, light transmittance is improved in those specific areas, thereby increasing overall luminance while maintaining high definition through the delta pixel arrangement
Solution Approach 2:
The patent applies different structural characteristics to different regions of the display. In regions where adjacent pixels have the same color, the black matrix is omitted to maximize light transmittance. In other regions where color interference is needed, the black matrix is retained. This localized differentiation optimizes both resolution and luminance
2Reliability
If the black matrix area is increased to prevent color interference, then the color separation is improved, but the light transmittance and luminance are reduced
Solution Approach 1:
The patent applies different structural characteristics to different regions of the display. In regions where adjacent pixels have the same color, the black matrix is omitted to maximize light transmittance. In other regions where color interference is needed, the black matrix is retained. This localized differentiation optimizes both resolution and luminance
Solution Approach 2:
The patent merges adjacent pixels of the same color into a continuous color filter region, eliminating the need for a black matrix between them. This merging approach maintains color separation while maximizing light transmittance in those specific regions
3Measurement precision
If the pixel size is reduced to increase screen definition, then the resolution is improved, but the pixel electrode size decreases and light transmittance is lowered
Solution Approach 1:
The patent extracts and eliminates the black matrix from specific regions where adjacent pixels of the same color are located. By removing this unnecessary component, light transmittance is improved in those specific areas, thereby increasing overall luminance while maintaining high definition through the delta pixel arrangement
Data Source
AI summary
In a screen configuration in which pixels are in a delta arrangement, video signal lines are formed on every other pixel, and two scanning lines in one set are disposed, transmittance of the screen is improved. Pixels corresponding to a red pixel (R), a green pixel (G), and a blue pixel (B) are disposed in a delta arrangement in a TFT substrate. A red color filter, a green color filter, a blue color filter are formed, in a counter substrate, corresponding to the red pixel (R), the green pixel (G), and the blue pixel (B) of the TFT substrate. A black matrix is formed to a portion where the color filter is not present. Two blue color filters are formed continuously adjacent each other in the first direction, and a black matrix is not formed between the blue color filters adjacent each other.