Liquid Crystal Panel Black Matrix Segmentation for Aperture Ratio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current liquid crystal displays face issues with light leaking and color shifting due to positional deviations between substrates, particularly exacerbated in curved displays, which are addressed by increasing the width of the black matrix, but this compromises the aperture ratio.
Innovation Solution
A liquid crystal panel design featuring a black matrix with black light shielding frames arranged in a matrix pattern on the TFT substrate, positioned at gaps between light blocking frames and scan/data lines, with grooves on the substrate surface to accommodate these frames, ensuring they are flush with the substrate surface and maintaining a high aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the width of the black matrix is increased to prevent light leaking and color shifting from positional deviation, then the reliability is improved, but the aperture ratio deteriorates
Solution Approach 1:
The black matrix is segmented into multiple black light shielding frames arranged in a matrix pattern within each pixel zone. This segmentation allows the black matrix to provide effective light shielding while maintaining smaller individual frame sizes that preserve aperture ratio. The segmented structure follows the scan line and data line patterns to create a grid of light shielding frames that collectively prevent light leaking without requiring a solid wide black matrix.
Solution Approach 2:
The black light shielding frames are strategically positioned at specific locations within each pixel zone where light leaking is most likely to occur. By concentrating the light shielding function at these critical locations rather than uniformly across the entire pixel zone, the design achieves effective light blocking while minimizing the overall area occupied by the black matrix, thus preserving aperture ratio.
2Reliability
If the black matrix width is increased to compensate for substrate positional shift, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The black matrix is divided into multiple discrete black light shielding frames arranged in a matrix pattern, which simplifies the manufacturing process compared to forming a single large continuous black matrix. This segmented approach allows for easier alignment and positioning during fabrication, reducing the complexity of achieving precise positional alignment while still providing effective light shielding.
Solution Approach 2:
The black light shielding frames serve multiple functions: they provide light shielding to prevent light leaking, act as structural elements that can accommodate substrate positional shifts, and follow the existing scan line and data line patterns to integrate with the TFT substrate structure. This multi-functionality reduces the need for additional separate structures, thereby reducing overall device complexity.
Data Source
AI summary
The present invention provides a liquid crystal panel, in which a black matrix is formed on a TFT substrate and the black matrix includes a plurality of black light shielding frames respectively located in a plurality of pixel zones and arranged in the form of a matrix. The black light shielding frames are each set at a gap between a light blocking frame and data lines and scan lines along a periphery of an opening area of each of the pixel zones so that the liquid crystal panel of the present invention eliminates the occurrence of defect situations of light leaking and color shifting resulting from positional deviation of the black matrix caused by positional shift between upper and lower substrates and also provides a relatively high aperture ratio.