Liquid Crystal Display Spacer Positioner Mechanism
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Solution Overview
Problem
The alignment film in liquid crystal display panels is prone to scratching due to spacers moving into the pixel area, degrading the display effect and shortening the service lifetime.
Innovation Solution
A liquid crystal display panel design where positioners with stoppers on the array substrate and spacers with slide grooves on the color filter substrate are arranged to limit the spacer's movement, preventing it from sliding into the pixel area by controlling the spacer's sliding distance and contact points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spacers are arranged between array substrate and color filter substrate to maintain uniform liquid crystal cell gap, then the liquid crystal cell gap uniformity is improved, but the alignment film may be scratched by spacers moving into pixel area
Solution Approach 1:
The positioner is segmented into multiple stoppers (first stopper and second stopper) that are distributed along the data line extension direction. This segmentation allows the positioner to control spacer movement in discrete steps, preventing the spacer from moving into the pixel area while maintaining the liquid crystal cell gap uniformity function.
Solution Approach 2:
The positioner acts as an intermediary component between the spacer and the array substrate. It mediates the interaction by providing a controlled sliding interface through the slide groove and stoppers, allowing the spacer to move only within a limited distance without contacting the alignment film, thus preventing scratching while maintaining gap uniformity.
2Ease of operation
If spacers are allowed to move to accommodate substrate alignment, then the ease of operation is improved, but the reliability of the alignment film decreases
Solution Approach 1:
The positioner provides a dynamic solution by allowing the spacer to slide along the data line direction within a controlled distance through the slide groove mechanism. This dynamic movement capability enables substrate alignment adjustment while the stoppers prevent excessive movement that would damage the alignment film, thus maintaining both operational flexibility and film integrity.
Solution Approach 2:
The stoppers are pre-positioned at specific locations along the data line extension direction to establish predetermined movement limits for the spacer. This preliminary action defines the safe movement range before assembly, ensuring that the spacer can move for alignment purposes but will not exceed the boundary that would cause alignment film scratching.
3Object-affected harmful factors
If positioners with stoppers are introduced to limit spacer movement, then the alignment film protection is improved, but the device complexity increases
Solution Approach 1:
The positioner structure applies local quality by concentrating the protective function at specific locations (stoppers positioned at predetermined distances along the data line) rather than requiring a complete structural overhaul. The slide groove and stoppers are localized features that provide protection only where needed, minimizing the increase in overall device complexity while effectively preventing alignment film scratching.
Solution Approach 2:
The positioner is divided into functional segments (first stopper, second stopper, slide groove) that can be independently designed and manufactured. This segmentation allows for modular assembly and simplifies the manufacturing process, reducing the practical complexity increase despite the additional protective functionality.
Data Source
AI summary
Disclosed relate to display technologies, a liquid crystal display panel and a display device. The liquid crystal display panel includes a color filter substrate and an array substrate to be connected by box aligning; positioners protruding toward the color filter substrate are arranged on a side of the array substrate facing the color filter substrate, at least one of the positioners is arranged between every two adjacent pixels; each positioner includes two stoppers distributed in an extension direction of data line in the array substrate; spacers protruding toward the array substrate are arranged on a side of the color filter substrate facing the array substrate; each spacer is arranged facing one of the positioners; an end of each spacer facing the array substrate contacts the positioner, and can slide relative to the positioner in the extension direction; each stopper contacts the spacer when the spacer slides relative to the positioner.