Liquid Crystal Lens Electrode Configuration for 3D Display Crosstalk Reduction
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Solution Overview
Problem
Current 3D image display devices using lenticular lenses suffer from crosstalk issues, which degrade the display quality due to the moiré phenomenon and inefficiencies in light refraction, affecting the stereoscopic effect experienced by viewers.
Innovation Solution
A 3D image display device incorporating a liquid crystal lens with a specific configuration of linear electrodes and polarizers, where the electrodes are alternately arranged in layers with controlled intervals and orientations to manage the electric field and refractive index, reducing crosstalk and enhancing diffraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lenticular lens is used for 3D image display, then light refraction is achieved to create stereoscopic effect, but moiré phenomenon occurs and crosstalk increases degrading display quality
Solution Approach 1:
The patent changes the physical parameters of the lens system by replacing traditional lenticular lens with a liquid crystal lens that uses voltage-controlled refractive index changes. The liquid crystal lens adjusts focal length and light refraction through electrical parameters (voltage) rather than fixed optical geometry, eliminating moiré patterns while maintaining stereoscopic effect through dynamic phase modulation of light waves.
Solution Approach 2:
The patent substitutes the mechanical/optical lenticular lens system with an electro-optical liquid crystal system. Instead of using physical lens curvature and material refraction, the invention uses electric fields to modulate liquid crystal molecular orientation, thereby controlling light phase and refraction electronically. This replacement eliminates the mechanical constraints that cause moiré phenomena in traditional lenticular displays.
2Productivity
If linear electrodes are arranged closely to control liquid crystal molecules, then diffraction efficiency improves, but crosstalk between adjacent electrodes increases
Solution Approach 1:
The patent applies local quality by creating non-uniform electrode spacing and depth positioning. Linear electrodes are arranged at different depths (first and second different depths) with varying intervals - some regions have closer electrodes for high diffraction efficiency, while other regions have spaced electrodes to minimize crosstalk. This localized variation in electrode configuration optimizes both diffraction efficiency and crosstalk reduction in different spatial zones.
Solution Approach 2:
The patent transitions from two-dimensional electrode arrangement to three-dimensional configuration by positioning linear electrodes at different depths within the liquid crystal layer. This vertical dimensionality allows electrodes to be closely spaced horizontally for high diffraction efficiency while maintaining vertical separation to reduce electromagnetic crosstalk between adjacent electrodes, effectively solving the trade-off through spatial dimensionality.
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 solution significantly reduces crosstalk and improves the display quality by optimizing the phase difference and refractive index distribution, providing a clearer stereoscopic effect without the moiré phenomenon, thereby enhancing the overall viewing experience.
Implementation Method 1
controlling liquid crystal molecules... optimizing the phase difference and refractive index distribution
Implementation Method 2
manage the electric field and refractive index... linear electrodes in the different layers are alternately arranged
Implementation Method 3
lower substrate including a plurality of linear electrodes which are disposed in different layers... two adjacent linear electrodes of the linear electrodes are spaced apart from each other
Implementation Method 4
the light emitted from the display panel is refracted while passing through the lenticular lens... progressing direction of the light is divided and incident to two eyes
Data Source
AI summary
A three-dimensional (“3D”) image display device includes a display panel, and a liquid crystal lens part disposed on the display panel and which selectively provides a two-dimensional (“2D”) image and a 3D stereoscopic image, where the liquid crystal lens part includes: a lower substrate including a plurality of linear electrodes which are disposed in different layers; an upper substrate including a plate electrode; and a lens liquid crystal layer disposed between the lower substrate and the upper substrate, where the linear electrodes in the different layers are alternately arranged in a unit zone of the liquid crystal lens part, and where two adjacent linear electrodes of the linear electrodes are spaced apart from each other when viewed from a top view.