Liquid Crystal Prism Calibration for 3D Display Crosstalk
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Crosstalk between visual areas in 3D displays causes ghosting and blurring, affecting the viewing experience due to misalignment and thickness fluctuations of liquid crystal prisms.
Innovation Solution
A method for calibrating liquid crystal prisms by adjusting driving voltages and corresponding relationships between sub-pixels and visual areas, addressing both thickness fluctuations and lateral shifts to improve crosstalk issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If liquid crystal prisms are used to achieve 3D display, then stereoscopic vision is improved, but crosstalk between visual areas causes ghosting and blurring
Solution Approach 1:
The patent applies parameter changes by adjusting the driving voltage of liquid crystal prisms to modify their refractive properties. By dynamically changing the voltage applied to liquid crystal prisms, the system optimizes light refraction angles to direct light from different visual areas to appropriate viewing zones, thereby reducing crosstalk while maintaining stereoscopic vision
Solution Approach 2:
The patent implements feedback mechanisms through calibration processes that measure and adjust the mapping relationships between sub-pixels and visual areas. The system performs calibration to determine optimal driving voltages and mapping configurations, then applies these parameters to minimize crosstalk, creating a closed-loop control system that improves image quality
2Reliability
If liquid crystal prism thickness is increased to improve light control, then crosstalk is reduced, but manufacturing precision becomes more difficult
Solution Approach 1:
Instead of relying solely on precise physical thickness control of liquid crystal prisms, the patent changes the operational parameter (driving voltage) to achieve the desired optical effect. By adjusting voltage, the system compensates for thickness variations and achieves optimal light control without requiring extremely tight manufacturing tolerances
Solution Approach 2:
The patent transitions from a static approach (fixed prism thickness) to a dynamic approach (adjustable driving voltage). The liquid crystal prisms can dynamically change their optical properties in response to voltage changes, allowing the system to adapt to manufacturing variations and optimize performance after production
3Reliability
If liquid crystal prism position is adjusted to reduce crosstalk, then visual area separation is improved, but device complexity increases
Solution Approach 1:
The patent changes the mapping parameters between sub-pixels and visual areas through calibration rather than physically moving components. By adjusting the logical mapping relationships and driving voltages, the system achieves better visual area separation without adding mechanical adjustment mechanisms
Solution Approach 2:
The patent replaces potential mechanical adjustment systems with electrical control mechanisms. Instead of physically moving liquid crystal prisms or adding complex mechanical calibration devices, the system uses voltage control and software-based mapping adjustments to achieve the same effect, reducing mechanical complexity
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 calibration method effectively reduces crosstalk, enhancing the quality of 3D image presentation by eliminating misalignment-induced ghosting and blurring.
Implementation Method 1
a plurality of liquid crystal prisms located on a light-emitting side of the display panel... one of the plurality of liquid crystal prisms overlaps with the plurality of sub-pixels
Data Source
AI summary
Provided are a method for calibrating a liquid crystal prism and a display device. The method includes: applying a first driving voltage to a liquid crystal prism based on a first mapping relationship, controlling a first and second visual areas to display a first image of solid color, a third and fourth visual areas to display a second image of nonsolid color and including a main pattern; acquiring a second driving voltage based on visibility of the main pattern at the first view point; and applying a second driving voltage to the liquid crystal prism, controlling one of the third and fourth visual areas to display the second image and the other not to display in a same time period, and acquiring a second mapping relationship based on the visibility of the main pattern at the first view point.