Transflective Display Polymer Stabilized Alignment
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Solution Overview
Problem
Transmissive liquid crystal displays consume high power due to backlight usage and have limited viewability in bright environments, while reflective displays are inadequate in dark conditions, and conventional transflective displays face complexity in liquid crystal alignment affecting contrast, aspect ratio, and response speed.
Innovation Solution
A method for fabricating a transflective display with a liquid crystal layer comprising liquid crystal molecules and monomers, where the monomers are polymerized to form non-liquid crystal polymers, enhancing the display with polymer stabilized alignment and multi-domain vertical alignment to improve transmissive contrast, aspect ratio, and response speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-domain vertical alignment (MVA) is used in conventional transflective liquid crystal display, then liquid crystal alignment is achieved, but the process becomes complex affecting transmissive contrast, aspect ratio, and response speed
Solution Approach 1:
The patent changes the physical-chemical parameters of the liquid crystal composition by adding monomers (0.1-20% by weight) that polymerize to form polymers. This parameter change enables the liquid crystal molecules to self-align vertically without complex MVA processes, resolving the contradiction between achieving reliable alignment and maintaining process simplicity
Solution Approach 2:
The patent uses a composite material system consisting of liquid crystal molecules combined with monomers that convert to polymers. This composite approach creates a new material property where the polymers provide anchoring effects that guide liquid crystal alignment, eliminating the need for complex MVA structural modifications while achieving reliable vertical alignment
2Illumination intensity
If transmissive liquid crystal display uses backlight source, then light transmission is achieved, but power consumption increases by 50% or more
Solution Approach 1:
The patent creates a transflective display that performs both transmissive and reflective functions using the same liquid crystal layer and structure. The vertically aligned liquid crystal molecules control light in both modes, allowing the display to function as either transmissive or reflective depending on backlight usage, thus reducing power consumption while maintaining light transmission capability when needed
3Use of energy by moving object
If reflective liquid crystal display uses environmental light reflection, then power consumption is reduced, but viewability in dark environments is limited
Solution Approach 1:
The patent designs a transflective display that combines both reflective and transmissive modes in a single structure. The vertically aligned liquid crystal layer controls light transmission when backlight is on (improving viewability in dark) and light reflection when backlight is off (reducing power consumption in bright environments), thus achieving dual functionality that resolves the viewability-power consumption contradiction
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 enhances the transmissive contrast, aspect ratio, and response speed of transflective displays, addressing power consumption and viewability issues by optimizing the liquid crystal alignment and polymerization process.
Implementation Method 1
The monomers are polymerized to form a plurality of non-liquid crystal polymers adjacent to the first electrode and the second electrode
Data Source
AI summary
A method of fabricating a transflective display. The method includes providing a first substrate; forming a first electrode thereon; providing a second substrate having a reflective area and a transmissive area opposite to the first substrate; forming a second electrode having a plurality of slits on the second substrate opposite to the first electrode; disposing a liquid crystal layer including a plurality of liquid crystal molecules and monomers between the first electrode and the second electrode, wherein the monomers have a weight ratio of about 0.1-20%; and polymerizing the monomers to form a plurality of non-liquid crystal polymers adjacent to the first electrode and the second electrode.