Gyro-Controlled Liquid Crystal Lens for Stereoscopic Display
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Solution Overview
Problem
Conventional electrically driven liquid crystal lens-based stereoscopic image display devices fail to maintain a stable stereoscopic image view when the device is rotated or moved, as the fixed position of the lens deviates from the regular viewing position, requiring the viewer to adjust their head or eyes to maintain the image.
Innovation Solution
Incorporating a gyro sensor and a voltage generator to adjust the voltages applied to the electrodes of a stereoscopic switching cell, allowing the device to dynamically shift the viewing position based on motion detected by the gyro sensor, ensuring a stable stereoscopic image is maintained regardless of device movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the liquid crystal lens position is fixed to simplify device structure, then device complexity is reduced, but the stereoscopic image viewing stability deteriorates when the device is rotated or moved
Solution Approach 1:
The patent applies the dynamics principle by making the liquid crystal lens position adjustable rather than fixed. The liquid crystal lens is moved along the optical axis based on motion detection signals from the gyro sensor, allowing the system to adapt to device rotation and movement while maintaining stable stereoscopic image viewing. This dynamic adjustment resolves the contradiction between structural simplicity and viewing stability.
Solution Approach 2:
The patent implements feedback control by using the gyro sensor to detect device motion and rotation, then using this information to automatically adjust the liquid crystal lens position. The controller receives motion signals and dynamically repositions the lens to compensate for device movement, creating a closed-loop feedback system that maintains viewing stability without requiring complex mechanical structures.
2Reliability
If the liquid crystal lens position is adjusted dynamically to maintain viewing stability during device movement, then stereoscopic image viewing stability is improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The patent applies universality by integrating multiple functions into existing components. The gyro sensor, originally designed for motion detection in mobile devices, is repurposed to control liquid crystal lens positioning. The liquid crystal lens itself serves both as the stereoscopic display element and as the adjustable optical component for compensation. This multi-functionality reduces the need for dedicated complex mechanical adjustment mechanisms.
Solution Approach 2:
The patent replaces traditional mechanical adjustment mechanisms with an electrically controlled liquid crystal lens system. Instead of using complex mechanical gears, motors, or linkages to adjust lens position, the system uses voltage-controlled liquid crystal properties to achieve precise optical adjustment. This substitution significantly reduces mechanical complexity while maintaining viewing stability.
3Reliability
If the viewer adjusts head or eye position to compensate for device rotation, then viewing stability can be maintained, but ease of operation deteriorates as the viewer must actively adjust
Solution Approach 1:
The patent implements self-service by enabling the system to automatically compensate for its own motion without requiring user intervention. The gyro sensor detects device rotation and movement, and the controller automatically adjusts the liquid crystal lens position to maintain the stereoscopic image at the correct viewing position. This eliminates the need for the viewer to manually adjust their head or eye position, significantly improving ease of operation while maintaining viewing stability.
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
Enables viewers to maintain a stable stereoscopic image experience even when the device is rotated or moved, as the voltage adjustments compensate for positional deviations, allowing the viewer to keep the image without head or eye movement.
Implementation Method 1
an electrically driven liquid crystal lens which enables a liquid crystal layer to function as a lens
Implementation Method 2
the lens controls the path of incident light using a difference in refractive index between a material configuring the lens and air according to positions
Implementation Method 3
sensing device motion using a gyro sensor included therein
Implementation Method 4
Liquid crystal molecules of the liquid crystal layer are arranged according to an electric field generated by applying voltages to the two electrodes. The liquid crystal molecules exhibit polarization and optical anisotropy.
Implementation Method 5
Optical anisotropy indicates that the path or polarization of emitted light is changed according to an incident direction or a polarized state of incident light due to the elongated structure and alignment direction of the liquid crystal molecules.
Data Source
AI summary
A stereoscopic image display device for sensing device motion using a gyro sensor included therein and controlling a viewing position, and a method for driving the same are disclosed, the stereoscopic image display device includes an image panel configured to output a two-dimensional image, a stereoscopic switching cell formed on the image channel and including n (n being a natural number greater than or equal to) first electrodes in a switchable region to convert the two-dimensional image into a three-dimensional image, a system including a gyro sensor, a voltage generator including a voltage source for independently applying voltages to the n first electrodes, and a stereoscopic switching cell controller configured to receive information about the motion of the system from the gyro sensor and transmit the information to the voltage generator.