Ethylene-Vinyl Acetate Copolymer for Flexible Liquid Crystal Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional liquid crystal display devices cannot achieve instant read-in and output of display information or adapt the orientation of liquid crystal molecules under bending states, limiting their flexibility and functionality.
Innovation Solution
An ethylene-vinyl acetate copolymer with a vinyl acetate monomeric unit mass percent of 20-35% and a number average molecular weight of 10,000 to 100,000 is used to form a network structure, anchoring rod-like liquid crystal molecules and enabling their orientation, thus allowing for instant read-in and output of display information even when the panel is bent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional liquid crystal display technique is used, then display function is achieved, but instant read-in and output of display information cannot be realized and liquid crystal molecules cannot adapt orientation under bending state
Solution Approach 1:
The patent uses a flexible substrate as the base for the liquid crystal display panel, enabling the entire structure to be bent without breaking. This flexible foundation allows the liquid crystal molecules to adapt their orientation when the panel is bent, solving the adaptability issue while maintaining display functionality.
Solution Approach 2:
The patent introduces a specific polymer material with controlled molecular weight (10,000-100,000) and vinyl acetate content (20-35%) to modify the physical parameters of the liquid crystal environment. This polymer creates an isotropic phase that facilitates rapid molecular reorientation, enabling instant read-in and output while maintaining adaptability under bending conditions.
2Quantity of substance
If memory display technique is used, then information can be stored, but instant read-in and output of display information cannot be achieved
Solution Approach 1:
The patent utilizes the phase transition properties of the polymer material, which forms an isotropic phase at operating temperatures. This isotropic phase allows liquid crystal molecules to move and reorient rapidly in response to external stimuli, achieving instant read-in and output while the polymer network maintains information storage capability through its structural memory.
Data Source
AI summary
The present invention provides an ethylene-vinyl acetate copolymer, a liquid crystal film layer, a display panel and a preparing method thereof. The ethylene-vinyl acetate copolymer is characterized in that the mass percent of the vinyl acetate monomeric unit is 20-35% and the number average molecular weight of the ethylene-vinyl acetate copolymer is 10,000-100,000. The ethylene-vinyl acetate copolymers of the invention form a network structure and have sheet shape in microscopic morphology, which allow liquid crystal molecules to be anchored in meshes of the network structure and therefore to be induced to orientate in accordance with the arrangement of the ethylene-vinyl acetate copolymers, thereby achieving the instant read-in and output of the display information. Particularly, with the ethylene-vinyl acetate copolymers, the adapted orientation of the liquid crystal molecules under the bending state of the display panel is achieved and the instant read-in and output of the display information is realized.