Liquid Crystal Grating Substrate for 3D Display Crosstalk Reduction
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Solution Overview
Problem
Existing liquid crystal gratings face difficulties in adjusting the sizes of light transmissive areas, leading to crosstalk issues in 3D displays due to complex and costly driving circuit structures.
Innovation Solution
A liquid crystal grating substrate with a first electrode structure featuring electrode strips, connecting parts, and projection parts with parallel driving parts, allowing for precise control of light transmissive areas through a simplified driving circuit with fewer control lines, enabling adjustable light transmissive and non-light transmissive areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex driving circuit structure with multiple control lines is used to adjust light transmissive areas, then control precision is improved, but device complexity and production cost increase
Solution Approach 1:
The electrode structure is segmented into multiple electrode strips, each capable of independent control. This segmentation allows precise adjustment of light transmissive areas by controlling individual electrode strips without requiring a complex overall circuit structure. Each electrode strip can be independently activated or deactivated to create the desired grating pattern.
Solution Approach 2:
The driving circuit is designed with multi-functionality, where a single control line can control multiple electrode strips through the projection part structure. This universal design reduces the total number of control lines needed while maintaining the ability to adjust light transmissive areas precisely, thereby reducing device complexity without sacrificing control precision.
2Adaptability or versatility
If more electrode strips are added to improve grating control, then light transmissive area adjustment capability is improved, but manufacturing complexity increases
Solution Approach 1:
The projection part structure embeds multiple driving parts within a single electrode strip configuration. This nested arrangement allows multiple functional electrode strips to be integrated into a compact structure that can be manufactured as a single unit, reducing manufacturing complexity while maintaining the ability to adjust light transmissive areas through multiple electrode strips.
Solution Approach 2:
Different regions of the electrode structure are designed with different local qualities - the projection parts have specific geometric configurations that enable precise control of light transmissive areas, while the connecting parts provide structural continuity. This localized optimization allows for improved adjustment capability without requiring complex manufacturing processes throughout the entire structure.
3Ease of manufacture
If fixed light transmissive area widths are used, then manufacturing is simplified, but crosstalk in 3D displays occurs
Solution Approach 1:
The light transmissive area widths are made dynamic rather than fixed. By controlling the activation state of individual electrode strips through the driving circuit, the widths of light transmissive areas can be adjusted in real-time. This dynamic adjustment capability allows the system to adapt to different display requirements and eliminate crosstalk by optimizing the separation between left and right eye image information, while maintaining manufacturing simplicity through the standardized electrode strip structure.
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 solution enhances control precision, reduces circuit design complexity and production costs, and effectively mitigates 3D crosstalk by allowing flexible adjustment of light transmissive area widths, improving the separation of left and right eye image information in stereoscopic displays.
Implementation Method 1
an electric field is generated between the second electrode structure and the first electrode structure of the first substrate to drive liquid crystal molecules in the liquid crystal layer to deflect
Implementation Method 2
a liquid crystal layer 25 arranged between the second electrode structure 23 and the first electrode structure 26
Implementation Method 3
the vibration direction of polarized light arriving at the first polarizing film 29 is just parallel to the absorption axis of the first polarizing film 29, then the light passes through
Data Source
AI summary
The present invention provides a liquid crystal grating substrate, a liquid crystal grating and a stereoscopic display device The liquid crystal grating substrate, the liquid crystal grating and the stereoscopic display device provided in the present invention can control the voltages of the electrode strips respectively, thereby not only improving the control precision of the liquid crystal grating, but also ensuring diversified control forms to meet various adjustment requirements for the width of the light transmissive area or non-light transmissive area of the liquid crystal grating; meanwhile, the liquid crystal grating is easy to drive and the sizes of the light transmissive areas can be controlled, thus the circuit design difficulty and the production cost are reduced, and the 3D crosstalk problem can be solved.