LCD Spacer Indented Surface Friction Control
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Solution Overview
Problem
Conventional LCD panels face issues with spacer shifting due to friction forces, leading to light leakage and crosstalk, which are mitigated by enlarging the black matrix, but this reduces the aperture ratio and overall panel performance.
Innovation Solution
The LCD panel features a substrate with an indented pattern surface that contacts or surrounds the spacers, reducing friction and preventing spacer shifting by filling the gaps with liquid crystal material, thereby maintaining the spacer's original position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the black matrix is enlarged to prevent spacer shifting, then light leakage and crosstalk are eliminated, but the aperture ratio decreases
Solution Approach 1:
The invention applies a textured structure specifically at the spacer-substrate contact region, creating local friction enhancement only where needed. This localized approach prevents spacer shifting without requiring enlargement of the entire black matrix, thus maintaining the aperture ratio while ensuring spacer position stability.
2Force
If the friction force between spacer and substrate is increased to prevent shifting, then spacer position is maintained, but the black matrix area must be enlarged
Solution Approach 1:
The textured structure creates localized high-friction zones precisely at the spacer contact points. This concentrates the friction force enhancement where it is most effective, eliminating the need to enlarge the entire black matrix area to achieve sufficient friction for spacer stabilization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively prevents spacer shifting, eliminating light leakage and crosstalk while maintaining the aperture ratio, thus enhancing the panel's performance and reliability.
Implementation Method 1
when a friction force F3 between the spacer 126 and the TFT substrate 130 is larger than the recovery force F2
Data Source
AI summary
A liquid crystal display (LCD) panel has a structure in which one of the thin film transistor (TFT) substrate and the color filter (CF) substrate has an indented pattern surface to contact or surround the end of the spacer, such that the friction between the spacers and indented pattern surface can be reduced, thus shifting of spacer to a wrong position can be avoided. A method of manufacturing such LCD panel is also disclosed.