Polymer Partition Wall for High-Definition Display Devices
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Solution Overview
Problem
Current display devices, particularly liquid crystal display devices, face challenges in achieving high-definition displays that are thin, lightweight, and operate with low power consumption, while maintaining improved display quality and adaptability to various usage environments.
Innovation Solution
A display device comprising a first electrode, a liquid crystal layer, a light-blocking layer, and an insulating layer, where the liquid crystal layer includes a monomer that polymerizes to form a polymer partition wall between electrodes, enhancing adhesion and maintaining cell gap stability, and a method for manufacturing this device involving specific steps for forming and aligning these layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a liquid crystal display device uses a backlight and optical modulation action, then display brightness and visibility are improved, but power consumption increases
Solution Approach 1:
The display device dynamically switches between transmissive mode (using backlight for high brightness) and reflective mode (using ambient light for low power consumption) based on environmental conditions and display requirements, allowing optimal performance across different usage scenarios
Solution Approach 2:
The liquid crystal element is designed to perform multiple functions: it can operate in both transmissive and reflective modes, serving as both a backlight-modulating element and an ambient light-reflecting element, thereby eliminating the need for separate display technologies for different lighting conditions
2Stability of the object's composition
If the liquid crystal layer contains only liquid crystal without polymer, then liquid crystal alignment and optical performance are maintained, but adhesion between layers deteriorates
Solution Approach 1:
The liquid crystal layer is formulated as a composite material containing both liquid crystal molecules (for optical performance and alignment) and polymer particles or monomers (for adhesion enhancement). The polymer component creates strong bonding interfaces between the liquid crystal layer and adjacent electrodes while preserving the liquid crystal's optical properties
Solution Approach 2:
The patent merges the functions of liquid crystal alignment and layer adhesion into a single integrated liquid crystal layer by incorporating polymer components directly within the liquid crystal mixture, eliminating the need for separate alignment layers and reducing overall device complexity
3Length of moving object
If the display device structure is simplified to reduce thickness, then device thickness and weight are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The liquid crystal layer with polymer components provides self-alignment and self-adhesion properties that automatically ensure precise positioning between layers during assembly, reducing the need for high-precision external alignment processes and simplifying manufacturing while maintaining thin profile
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 solution enables the creation of high-definition, thin, and lightweight display devices with improved contrast and reliability, capable of operating with low power consumption and maintaining display quality across different environments.
Implementation Method 1
the liquid crystal layer includes a first portion overlapping with the first electrode and a second portion surrounding part of the first portion. The second portion overlaps with the light-blocking layer. The first portion includes a monomer and liquid crystal and the second portion includes a polymer obtained by polymerization of the monomer
Data Source
AI summary
A display device that is suitable for high definition and a method for manufacturing thereof are provided. The display device includes a reflective liquid crystal element. A liquid crystal layer has a first portion overlapping with a reflective electrode that reflects visible light and blocks ultraviolet light, and a second portion overlapping with a region between two adjacent reflective electrodes. The first portion contains a monomer and liquid crystal and the second portion contains a polymer obtained by polymerization of the monomer. In the second portion, the polymer constitutes the framework of a columnar partition wall which bonds a pair of substrates to each other. The partition wall can be formed in a self-aligned manner by using the reflective electrode as a light-blocking mask at the irradiation with light. The polymer is positioned to fit a depression portion of an insulating layer over which the reflective electrode is provided.