Liquid Crystal Display Panel Spacer Structure for Image Retention
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Solution Overview
Problem
Conventional liquid crystal display panels suffer from image retention and dark shades due to the tilting of liquid crystal molecules in the color film hole region, which affects display quality when the panel is tapped.
Innovation Solution
A liquid crystal display panel design featuring a spacer structure around the through hole in the color resistance layer to separate liquid crystal molecules, reducing mutual interaction between molecules in the hole region and the pixel electrode area, thereby minimizing image retention and dark shades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the color resistance layer is made thick to ensure structural integrity, then the manufacturing strength is improved, but the liquid crystal molecules accumulate in the color film hole region causing dark shade and image retention
Solution Approach 1:
The color resistance layer is segmented into multiple sub-layers (first color resistance sub-layer and second color resistance sub-layer) separated by an insulating layer. This segmentation prevents liquid crystal molecule accumulation while maintaining structural integrity, as each sub-layer can be optimized independently for its specific function.
Solution Approach 2:
An insulating layer is introduced as an intermediary between the two color resistance sub-layers. This intermediary layer prevents direct interaction between liquid crystal molecules in the hole region and the pixel electrode, eliminating the dark shade and image retention effects while allowing both sub-layers to maintain their structural functions.
2Manufacturing precision
If the extension P1 of the pixel electrode is made narrow to fit the through hole, then the manufacturing precision is improved, but the electric field becomes divergent causing liquid crystal molecule tilting and dark shade
Solution Approach 1:
The insulating layer serves as an intermediary that shields the divergent electric field from directly affecting the liquid crystal molecules in the hole region. This allows the pixel electrode extension to remain narrow for precise alignment while preventing the harmful electric field effects on liquid crystal orientation.
Solution Approach 2:
The insulating layer is locally positioned only in the region where the pixel electrode extension interacts with the liquid crystal molecules in the hole region. This localized approach provides targeted protection against electric field-induced tilting while maintaining the overall narrow geometry of the pixel electrode extension for precise alignment.
3Ease of manufacture
If the color film hole region is enlarged to accommodate the through hole, then the ease of manufacture is improved, but the liquid crystal molecule accumulation increases causing darker display quality
Solution Approach 1:
The color resistance layer is divided into multiple sub-layers with the insulating layer in between, creating a segmented structure that reduces the effective hole region size for liquid crystal molecule accumulation while maintaining ease of manufacture. Each sub-layer can be processed independently, facilitating manufacturing.
Solution Approach 2:
The insulating layer acts as a mediator that prevents liquid crystal molecules from accumulating in the hole region even when the hole is enlarged for ease of manufacture. This intermediary layer blocks the harmful interaction between the enlarged hole region and the liquid crystal molecules, maintaining display quality.
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
The spacer structure effectively reduces image retention and dark shades, enhancing display quality by preventing liquid crystal molecule tilting and maintaining optimal orientation.
Implementation Method 1
Through the fringe electric field effect of the pixel electrode and the tilting orientation of the liquid crystal molecules induced by the geometry of the bumps
Implementation Method 2
the tilting orientation of the liquid crystal molecules induced by the geometry of the bumps
Implementation Method 3
the direction of the electric field formed between it and the upper plate is divergent
Data Source
AI summary
A liquid crystal display panel and a liquid crystal display are disclosed. The liquid crystal display panel includes a color film substrate and an array substrate disposed opposite each other, wherein the array substrate includes a pixel electrode, a color resistance layer, and a thin film transistor, the color resistance layer is provided with a through hole, a drain of the thin film transistor is connected with the pixel electrode through the through hole, and a region corresponding to the through hole is provided with a spacer for separating liquid crystal molecules in the region where the through hole is located from liquid crystal molecules in a region where the electrodes are located.