Liquid Crystal Devices with Integrated Polariser and Control Circuitry
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Solution Overview
Problem
Conventional techniques for producing liquid crystal display devices face challenges in optimizing optical output by effectively combining liquid crystal cells, particularly in maintaining polarization filter properties and structural support while ensuring electrical control circuitry functionality.
Innovation Solution
The method involves creating a cell assembly with liquid crystal material sandwiched between a polariser component with an active dichroic doped polymer film and control components with electrical control circuitry, using stretched polymer films coated with iodine needles, and connecting gate and source lines in series to facilitate electrical control across the cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If two liquid crystal cells are combined in series to improve optical output, then the optical performance is enhanced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent combines two liquid crystal cells into a single integrated device with shared polarizer and support structures. The first and second liquid crystal materials are contained between common polarizer components, merging what would traditionally be separate cells into one unified optical system that improves overall optical output while reducing redundant components.
Solution Approach 2:
The polarizer components serve dual functions by acting as both the polarizer for the first liquid crystal cell and the counter-polarizer or additional polarizer for the second liquid crystal cell. This multi-functional design reduces the total number of separate polarizer components needed while maintaining the optical performance benefits of having two cells in series.
2Reliability
If a polariser component with active film and support film is used, then polarization filter properties are maintained, but the structural complexity increases
Solution Approach 1:
The patent integrates the polarizer and support film into a single combined component structure. The polarizer component comprises an active film supported by a support film, creating a unified structure that maintains polarization properties while reducing the number of separate components that would otherwise be needed to provide both support and polarization functions.
3Ease of operation
If electrical control circuitry is integrated into control components, then electrical control functionality is enabled, but the manufacturing precision requirements increase
Solution Approach 1:
The control circuitry is segmented into discrete control components, each with defined electrical terminals and circuitry layers. This segmentation allows for modular assembly where each control component can be manufactured and tested independently before being integrated with the liquid crystal materials and polarizer components, reducing the overall manufacturing precision requirements compared to a fully integrated monolithic design.
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
This approach enhances the range of viewing angles with reduced image distortion, maintains polarization filter properties, and enables efficient electrical control of liquid crystal cells, improving the overall optical performance of liquid crystal display devices.
Implementation Method 1
said active film comprises a dichroic doped polymer film supported by said support film
Implementation Method 2
said active film comprises the product of stretching a polymer film coated with iodine needles
Implementation Method 3
liquid crystal material contained directly between (i) a polariser component and (ii) a first control component including a stack of layers defining electrical control circuitry
Data Source
AI summary
A technique of producing a liquid crystal device, comprising: providing a cell assembly comprising a liquid crystal material contained directly between (i) a polariser component comprising an active film and no more than one support film, and (ii) a first control component including a stack of layers defining electrical control circuitry; and containing further liquid crystal material directly between the polariser component of the assembly and another control component including another stack of layers defining electrical control circuitry.