Polymer-Stabilized Liquid Crystal Display Reducing Driving Voltage
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Solution Overview
Problem
Existing liquid crystal display devices require high driving voltage and have slow response speed, which fails to meet the demands for low power consumption and fast response.
Innovation Solution
Incorporating liquid crystalline polymerizable monomers into the liquid crystals, which form a high molecular polymer network upon UV irradiation, anchoring the liquid crystals and enabling them to rapidly restore their initial orientation when the electric field is removed, thus reducing driving voltage and power consumption while enhancing response speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional liquid crystal display devices are used, then the display function is achieved, but the driving voltage is high and response speed is slow
Solution Approach 1:
The patent uses a composite system consisting of liquid crystals and polymerizable monomers. The liquid crystal component provides the optical switching function, while the polymerizable monomer component forms a polymer network that accelerates response. This composite material approach allows the system to achieve both fast response speed and low power consumption by combining the advantages of different materials.
Solution Approach 2:
The patent changes the physical and chemical parameters of the liquid crystal system by adding polymerizable monomers with specific molecular structures and reactive groups. This modification alters the viscosity, elastic constants, and anchoring energy of the liquid crystal, leading to improved response characteristics and reduced driving voltage requirements.
2Speed
If high driving voltage is applied to achieve fast response, then response speed improves, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by forming a polymer network structure before the liquid crystal display operation begins. This pre-formed polymer network provides enhanced anchoring and elastic restoring forces, allowing the liquid crystal to respond faster to voltage changes without requiring high driving voltages, thus reducing power consumption while maintaining fast response speed.
3Speed
If polymerizable monomers are added to liquid crystals, then response speed increases and driving voltage decreases, but the device complexity increases
Solution Approach 1:
The patent merges the liquid crystal material and polymerizable monomer into a single mixed composition that is filled into the display cell together. This combining approach simplifies the manufacturing process compared to separate steps, as the polymer network forms in-situ within the liquid crystal cell during a single photopolymerization step, reducing overall device complexity despite the enhanced functionality.
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 high molecular polymer network effectively reduces the driving voltage required and decreases power consumption while improving the response speed of liquid crystals, enabling high-quality picture display with lower power consumption and faster switching times.
Implementation Method 1
Incorporating liquid crystalline polymerizable monomers into the liquid crystals, which form a high molecular polymer network upon UV irradiation
Implementation Method 2
anchoring the liquid crystals and enabling them to rapidly restore their initial orientation when the electric field is removed
Implementation Method 3
the liquid crystal 30 is subjected to an orientation effect of the alignment films and thus their long axes are arranged parallel to the two substrates
Implementation Method 4
the arrangement direction of liquid crystals 30 is twisted with the electric field direction under the influence of the electric field
Data Source
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Figure 7
AI summary
According to the present invention, there are disclosed a liquid crystal display device and method for manufacturing the same. The liquid crystal display device comprises: a color filter substrate, an array substrate and a liquid crystal composite system filled between the color filter substrate and the array substrate, wherein liquid crystals and a high molecular polymer network, which is formed by polymerization of liquid crystalline polymerizable monomers, are included in the liquid crystal composite system.