Array Substrate Scan Line Nesting for LCD Brightness
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Solution Overview
Problem
The existing wide viewing angle LCD technologies face challenges in improving the transmittance and aperture ratio due to the placement of scan lines, which reduces the brightness of the LCD panel.
Innovation Solution
The array substrate design includes pixel units with a trunk portion corresponding to an opaque dark area, where scan lines are positioned within the vertical projection of the trunk portion instead of between pixel units, allowing the pixel electrode to expand and increase the transmittance area, and incorporates a color resist layer to reduce capacitive load and enhance display effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the scan line is located at the long side of the pixel electrode to achieve wide viewing angle, then the viewing angle is improved, but the aperture ratio and brightness are reduced due to increased space occupation
Solution Approach 1:
The scan line is moved from the horizontal dimension (side of pixel electrode) to the vertical dimension (under the trunk portion), utilizing the vertical space above the pixel electrode. This dimensional relocation allows the scan line to coexist with the pixel electrode structure without reducing the aperture ratio, while maintaining the wide viewing angle performance through the multi-domain pixel electrode design.
2Ease of operation
If the scan line is positioned between adjacent pixel electrodes, then the scanning signal can be delivered, but the transmittance and brightness are reduced due to the scan line occupying display area
Solution Approach 1:
The scan line is nested within the vertical projection area of the pixel electrode's trunk portion, specifically positioned in the opaque dark area. This nesting allows the scan line to be concealed within the existing pixel structure, delivering scanning signals without occupying additional display area, thereby maintaining high transmittance and brightness in the visible display region.
3Adaptability or versatility
If the pixel electrode uses a multi-domain structure for wide viewing angle, then the viewing angle is improved, but the space for light transmission is reduced
Solution Approach 1:
The pixel electrode is segmented into multiple domains (first and second domains) with different liquid crystal tilt directions, enabling wide viewing angle performance. The trunk portion connecting these domains is positioned in the opaque dark area where the scan line is located, allowing the segmented structure to achieve wide viewing angle without sacrificing transmittance area in the visible display regions.
Data Source
AI summary
The present invention discloses an array substrate, comprising: multiple pixel units arranged in an array having rows and columns, and each of the pixel units comprises a pixel electrode, and the pixel electrode comprises at least a trunk portion corresponding to an opaque dark area; and multiple scan lines, and each of the scan lines is disposed within the vertical projection of the trunk portion for inputting a scanning signal to one of the pixel units. The present invention also discloses an LCD panel. By the above way, the present invention can improve the transmittance and the aperture ratio of the LCD panel.