Rotatable Liquid Crystal Lens Array for Stereoscopic Display
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Solution Overview
Problem
Conventional lenticular lens stereoscopic display devices are limited in adjusting the viewing angle, leading to reduced or failed stereoscopic rendering effects when the display screen has a large inclination angle or when the user's vertical viewing angle is excessive, affecting user experience.
Innovation Solution
A stereoscopic display device with a lens array and processing circuit that dynamically adjusts the liquid crystal rotation angle based on the user's actual eye position, ensuring the viewing position of the three-dimensional image matches the eye position by using an image sensor to calculate the eye position and adjust the lens array's liquid crystal rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the lenticular lens is fixedly attached to the display screen surface, then the device structure is simple, but the stereoscopic rendering effect deteriorates when the display screen has a large inclination angle or the user's vertical viewing angle is excessive
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed lenticular lens into a rotatable lens array. The lens array can dynamically adjust its rotation angle around the vertical axis of the display screen, allowing the stereoscopic display to adapt to different user viewing positions and screen inclination angles. This dynamic adjustment capability resolves the contradiction by maintaining reliable stereoscopic rendering effects across various viewing conditions without significantly complicating the overall device structure.
Solution Approach 2:
The patent implements parameter changes by modifying the rotation angle parameter of the lens array. By changing the rotation angle of the lens array around the vertical axis, the system can optimize the stereoscopic rendering effect for different user positions and screen orientations. This parameter adjustment allows the device to maintain high rendering reliability while keeping the structural complexity relatively low.
2Ease of manufacture
If the lenticular lens is arranged in a single direction, then the manufacturing process is simple, but the viewing angle adjustment capability is limited
Solution Approach 1:
The patent transforms the static single-direction lenticular lens arrangement into a dynamic rotatable lens array. The lens array can rotate around the vertical axis of the display screen, providing multi-directional viewing angle adjustment capability. This dynamic feature significantly improves adaptability while maintaining relatively simple manufacturing processes, as the lens array itself can be produced using conventional lenticular lens manufacturing techniques.
3Device complexity
If the liquid crystal refraction angle is adjusted only in the horizontal direction, then the control system is simple, but the stereoscopic effect deteriorates when the user's vertical viewing angle is excessive
Solution Approach 1:
The patent addresses this contradiction by adding a rotational dimension to the lens array control. Instead of only adjusting the refraction angle in the horizontal direction, the lens array can now rotate around the vertical axis, providing adjustment capability in another dimension. This rotational degree of freedom enables the system to maintain reliable stereoscopic effects even when users have excessive vertical viewing angles, while keeping the control system relatively simple.
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 maintains the stereoscopic rendering effect by dynamically adjusting the lens array's liquid crystal rotation, optimizing user experience across various viewing angles and positions.
Implementation Method 1
adjusting a liquid crystal rotation angle of the lens array
Implementation Method 2
Via lens refraction, the left and right eyes of the user respectively see the corresponding left-eye image picture and the right-eye image picture
Data Source
AI summary
A stereoscopic display device and a display method thereof are provided. The stereoscopic display device includes a display panel, a lens array, an image sensor, and a processing circuit. The display panel displays a three-dimensional image. The lens array is disposed on a transmission path of the three-dimensional image. The image sensor acquires a sensed image of a viewing field of the display panel. The processing circuit is coupled to the lens array and the image sensor. The processing circuit calculates an actual eye position of a user in the viewing field according to reference coordinates of a reference position in the sensed image and eye coordinates of the user in the sensed image. The processing circuit adjusts a liquid crystal rotation angle of the lens array according to the actual eye position, so that a viewing position of the three-dimensional image matches the actual eye position.