Array Substrate White Sub-Pixel Light Shielding for LCD Brightness
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Solution Overview
Problem
Existing liquid crystal display (LCD) apparatuses face challenges in achieving optimal brightness and image quality due to the high ratio of area occupied by white sub-pixels, leading to excessive waste of white light and reduced brightness of single color images.
Innovation Solution
The array substrate is designed with a specific arrangement of white sub-pixels and primary color sub-pixels, where the white sub-pixels are adjacent to primary color sub-pixels in a column direction, and light-shielding patterns are strategically placed to reduce the area of white sub-pixel openings while increasing the area of primary color sub-pixel openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the area ratio of white sub-pixels is increased to improve overall brightness, then the brightness of the display is enhanced, but the waste of white light increases and the brightness of single color images decreases
Solution Approach 1:
The patent applies local quality by differentiating the treatment of white sub-pixels and primary color sub-pixels. Light-shielding patterns are selectively placed only in white sub-pixel regions, while primary color sub-pixel regions maintain larger openings. This localized differentiation allows the white sub-pixels to control overall brightness while primary color sub-pixels preserve color image brightness, resolving the contradiction between overall brightness and white light waste.
2Loss of energy
If the area of white sub-pixel openings is reduced to decrease white light waste, then the brightness of primary color images is improved, but the overall brightness of the display is reduced
Solution Approach 1:
The patent implements local quality by applying light-shielding patterns exclusively to white sub-pixel regions while leaving primary color sub-pixel regions unaffected. This selective approach allows reduction of white light waste in white sub-pixels without compromising the opening area and brightness of primary color sub-pixels, thereby maintaining overall display brightness while improving primary color image quality.
3Quantity of substance
If light-shielding patterns are added to reduce white sub-pixel area, then the ratio of white sub-pixel area is reduced and primary color brightness is enhanced, but the device structure becomes more complex
Solution Approach 1:
The patent merges the light-shielding function with existing structural elements by integrating light-shielding patterns into the pixel electrode or color filter layers. This consolidation approach reduces the need for separate light-shielding components, thereby achieving the desired reduction in white sub-pixel area ratio while minimizing increases in device structural complexity.
Data Source
AI summary
An array substrate has sub-pixel regions arranged in an array, and the sub-pixel regions include white sub-pixel regions and primary color sub-pixel regions. The array substrate includes a first substrate and a plurality of sub-pixels disposed on the first substrate. The sub-pixels include white sub-pixels and primary color sub-pixels. In a column direction, a side of each white sub-pixel is adjacent to at least one primary color sub-pixel. Each sub-pixel has light-shielding patterns. In the column direction, in a plurality of light-shielding patterns of a primary color sub-pixel adjacent to the white sub-pixel, a part of the light-shielding patterns are disposed in a white sub-pixel region where the white sub-pixel is located, and another part of the light-shielding patterns are disposed in a primary color sub-pixel region corresponding to the primary color sub-pixel.