3D Image System Liquid Crystal Shutter Phase Retardation Control
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Solution Overview
Problem
Current 3D image systems face challenges in minimizing cross-talk between left and right images, which is crucial for providing an immersive 3D experience, as any misalignment or phase retardation can result in static cross-talk, preventing proper image delivery to the correct eye.
Innovation Solution
A 3D image system utilizing a liquid crystal shutter with a λ/2 phase retardation state and polarized glasses, where the liquid crystal shutter switches between λ/2 and 0 phase retardation states, and an optical compensation film is used to eliminate residual phase retardation, ensuring accurate image delivery to each eye by aligning the liquid crystal molecules and using compensation films to correct phase retardation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a liquid crystal shutter is used to alternately display left and right images, then 3D image capability is achieved, but phase retardation errors cause cross-talk between left and right images
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the phase retardation of the liquid crystal shutter between λ/2 and 0 states to control light polarization. This enables precise timing of image delivery to each eye while maintaining 3D capability and eliminating cross-talk through controlled optical parameter modulation.
Solution Approach 2:
The patent introduces an optical compensation film as an intermediary element between the liquid crystal shutter and the observer. This compensation film corrects residual phase retardation errors that the liquid crystal shutter cannot fully eliminate, thereby improving image delivery accuracy and reducing cross-talk while preserving 3D functionality.
2Reliability
If the liquid crystal shutter switches between λ/2 and 0 phase retardation states, then cross-talk is reduced, but residual phase retardation remains causing image errors
Solution Approach 1:
The patent uses parameter changes by switching the liquid crystal shutter between λ/2 and 0 phase retardation states to minimize cross-talk. Combined with the optical compensation film that provides additional phase correction, this achieves high precision phase control that eliminates both cross-talk and residual phase errors.
Solution Approach 2:
The optical compensation film serves as an intermediary that corrects residual phase retardation errors remaining after the liquid crystal shutter's λ/2 and 0 state switching. This secondary compensation mechanism achieves the high manufacturing precision required for error-free 3D image delivery.
3Adaptability or versatility
If polarized glasses are used with the liquid crystal shutter, then left and right images can be delivered to correct eyes, but misalignment causes static cross-talk
Solution Approach 1:
The patent applies parameter changes by precisely controlling the polarization state of light through the liquid crystal shutter's phase retardation switching. This ensures that left and right images are delivered with correct polarization orientation to the corresponding eyes, preventing static cross-talk while maintaining 3D capability.
Solution Approach 2:
The optical compensation film acts as an intermediary that ensures accurate polarization alignment between the liquid crystal shutter output and the polarized glasses. This compensation mechanism corrects any polarization misalignment that would otherwise cause static cross-talk, achieving reliable image delivery to the correct eyes.
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 system effectively reduces cross-talk by ensuring precise phase retardation control, allowing the left and right images to be correctly viewed by the observer without residual errors, enhancing the overall 3D image experience.
Implementation Method 1
a liquid crystal shutter having a liquid crystal layer and configured to switch between a λ/2 phase retardation state and a 0 phase retardation state
Implementation Method 2
polarized glasses including a right glass window having a first polarization axis and a left glass window having a second polarization axis
Data Source
AI summary
The present disclosure relates to a three-dimensional image system. The present disclosure suggests a three dimensional image system comprising: a display device configured to suggest a left image and a right image alternately; a liquid crystal shutter having a liquid crystal layer and configured to switch between a λ/2 phase retardation state and a 0 phase retardation state; polarized glasses including a right glass window having a first polarization axis and a left glass window having a second polarization axis. According to the present disclosure, the left image and the right image can be exactly recognized by the left eye and the right eye, respectively, without any cross-talk problem.