Liquid Crystal Lens Eye Tracking for 3D Display Crosstalk
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Solution Overview
Problem
Current 3D display technologies suffer from image crosstalk issues when viewers move their eyes, causing incorrect image reception and reduced viewing comfort due to the inability to adjust lens positions in real time.
Innovation Solution
A liquid crystal lens system with adjustable electrodes and an eye tracking unit that changes the position and aperture of lens equivalent units in real time based on viewer eye movement, ensuring correct image alignment for each eye.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lens positions are fixed in traditional 3D display, then device structure is simple, but image crosstalk occurs when viewer's eyes move
Solution Approach 1:
The patent implements dynamic lens position adjustment by applying different voltages to first electrodes, enabling lens equivalent units to move horizontally in response to eye tracking data. This dynamic adjustment resolves the contradiction by adapting lens positions to actual eye movements, preventing image crosstalk while maintaining system feasibility through voltage-controlled liquid crystal manipulation.
Solution Approach 2:
The patent incorporates an eye tracking unit that detects eye position and feeds this information back to the control unit, which then adjusts lens positions accordingly. This feedback mechanism ensures image accuracy by continuously compensating for eye movements, resolving the contradiction between fixed structure simplicity and dynamic image accuracy requirements.
2Ease of operation
If lens positions are adjusted to track eye movement, then image crosstalk is reduced, but device complexity increases
Solution Approach 1:
The patent makes the lens positions dynamic by controlling liquid crystal molecules through voltage application to first electrodes. This allows the lens equivalent units to follow eye movements horizontally, significantly improving viewing comfort and eliminating image crosstalk, while the dynamic nature enables adaptation to different viewing conditions.
Solution Approach 2:
The patent introduces an eye tracking unit as an intermediary that bridges the gap between viewer eye movements and lens position adjustment. This intermediary detects eye position and translates it into appropriate voltage signals for electrode control, improving ease of operation while managing device complexity through modular design.
3Adaptability or versatility
If multiple first electrodes are used to form lens equivalent units, then lens position can be adjusted, but manufacturing complexity increases
Solution Approach 1:
The patent divides the electrode structure into multiple first electrodes arranged in an array, where each electrode or group of electrodes can independently control a lens equivalent unit's position. This segmentation provides flexible position adjustment capability while using standard electrode fabrication techniques, balancing adaptability with ease of manufacture.
Solution Approach 2:
The patent achieves lens position adjustment by changing the voltage parameter applied to first electrodes rather than physically repositioning components. This parameter-based control method provides flexible adaptability while maintaining simple manufacturing processes, as voltage control can be implemented through standard driving circuits without complex mechanical adjustments.
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 effectively reduces crosstalk and enhances viewing comfort by ensuring accurate image reception for both eyes even when the viewer's eyes move, improving the overall 3D display experience.
Implementation Method 1
The control unit is configured to control a voltage of the first electrode and of the second electrode so that liquid crystal molecules in the liquid crystal layer deflect to form a plurality of lens equivalent units
Implementation Method 2
a liquid crystal lens is arranged in front of a liquid crystal display so that an image plane of the liquid crystal display is positioned in a focal plane of the lens, pixels of an image under each lens are divided into left eye pixels and right eye pixels, and the lens may project the left eye pixels and the right eye pixels in different directions
Data Source
AI summary
The present disclosure relates to a liquid crystal lens, a 3D display panel and methods for controlling the same. A liquid crystal lens for a 3D display panel, including a first substrate, a second substrate, a plurality of first electrodes arranged on the first substrate, a second electrode arranged on the second substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and a control unit. The control unit is configured to control a voltage of the first electrode and of the second electrode so that liquid crystal molecules in the liquid crystal layer deflect to form a plurality of lens equivalent units, and the control unit is further configured to adjust the voltage of the first electrode to change a position of each of the lens equivalent units.