Transparent Electrode Slit Design for ADS LCD Transmittance
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Solution Overview
Problem
In liquid crystal display devices using Advanced Super Dimensional Switching (ADS) technology, the region between sub-pixel transparent electrodes lacks openings, leading to irregular liquid crystal molecule arrangement and decreased transmittance due to an integral structure.
Innovation Solution
The transparent electrode design includes additional openings between adjacent domains, forming slits in different directions, which extends to the region between the first-domain and second-domain display regions, enhancing the arrangement of liquid crystal molecules and increasing transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transparent electrode uses an integral structure without openings between display regions, then the structural integrity is maintained, but the liquid crystal molecules arrange irregularly and transmittance decreases
Solution Approach 1:
The patent applies segmentation by introducing additional openings in the boundary region between first-domain and second-domain display regions. These openings divide the integral structure into segmented transparent and non-transparent areas, allowing light to pass through while maintaining structural continuity. The segmentation creates a pattern where transparent electrode material is strategically removed to form openings, resolving the contradiction between structural integrity and transmittance enhancement.
Solution Approach 2:
The patent applies local quality by making the boundary region between display domains have different properties from the interior regions. Specifically, the boundary region contains additional openings that are not present in the interior regions, creating local variations in transparency and structure. This local modification allows the boundary area to have enhanced light transmission properties while the interior regions maintain their original structural characteristics.
2Illumination intensity
If additional openings are formed in the boundary region between display regions, then transmittance increases by 3%-5%, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the electrode structure into distinct regions: interior regions with regular slit patterns and boundary regions with additional openings. This segmentation allows the complex feature (additional openings) to be localized only where needed at domain boundaries, rather than throughout the entire electrode, thereby limiting the increase in manufacturing complexity to specific areas.
Solution Approach 2:
The patent applies local quality by confining the additional openings to the boundary region between display domains, while interior regions maintain their simpler original structure. This localized approach means that the manufacturing process only needs to handle the complex pattern in specific boundary areas, reducing the overall device complexity increase compared to applying the same structure uniformly across the entire electrode.
Data Source
AI summary
Embodiments of the invention provide a transparent electrode, an array substrate and a liquid crystal display device. The transparent electrode includes a first-domain display region and a second-domain display region that are adjacent to each other, openings are respectively formed in the first-domain display region and the second-domain display region of the transparent electrode so that the transparent electrode has a first slit extending in a first direction in the first-domain display region and a second slit extending in a second direction different from the first direction in the second-domain display region. Additional openings are further formed at a region between the first-domain display region and the second-domain display region of the transparent electrode, so that a third slit extending in a third direction and a fourth slit extending in a fourth direction different from the third direction are formed at this region.