Liquid Crystal Lens Panel for Glasses-Free 3D Display
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Solution Overview
Problem
Current display devices either only display two-dimensional images or require special glasses to view three-dimensional images, limiting their functionality and user experience.
Innovation Solution
A display device incorporating a liquid crystal panel with a cholesteric alignment region that uses polarizers and a light source to separate and direct right-eye and left-eye image signals, allowing for the display of both two-dimensional and three-dimensional images without the need for glasses, by controlling the alignment of liquid crystal molecules with voltage to achieve optical anisotropy and isotropy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a display device uses traditional 3D display methods (stereo-scopic type with glasses), then three-dimensional images can be displayed, but the user experience is degraded due to the requirement of special glasses
Solution Approach 1:
The liquid crystal lens panel dynamically changes its focal length and optical properties by applying different voltages. When voltage is applied, the liquid crystal molecules reorient to create lensing effects for 3D display; when voltage is removed or adjusted, the panel transitions to a flat state for 2D display, enabling seamless switching between display modes without requiring physical glass components
Solution Approach 2:
The invention changes the optical parameters of the display device by controlling the liquid crystal's refractive index and focal length through voltage application. By adjusting the voltage applied to the liquid crystal lens panel, the system transitions between different optical states (focal length infinity for 2D, finite focal length for 3D), enabling versatile display functionality without compromising user experience
2Adaptability or versatility
If a display device is designed for two-dimensional images only, then the device structure is simple, but the functionality is limited and cannot display three-dimensional images
Solution Approach 1:
The liquid crystal lens panel serves multiple functions: it acts as a flat transparent panel for 2D display, transforms into a lens array for 3D display, and can switch between different focal lengths. This single component replaces what would traditionally require separate optical systems, achieving multi-functionality without proportionally increasing device complexity
Solution Approach 2:
The invention merges the functions of the lens array and the display panel into a single integrated liquid crystal lens panel. The liquid crystal material itself serves both as the optical element for focusing light and as the display medium, eliminating the need for separate lens components and reducing overall device complexity while enhancing functionality
3Adaptability or versatility
If a liquid crystal panel uses a fixed alignment structure (vertical or horizontal), then the manufacturing is simple, but the ability to switch between 2D and 3D display modes is lost
Solution Approach 1:
The liquid crystal alignment is made dynamic rather than fixed. By applying voltage, the liquid crystal molecules transition from a relaxed alignment state (suitable for 2D display) to a voltage-induced alignment state that creates the lensing effect (for 3D display). This dynamic reconfigurability enables mode switching without requiring multiple fixed alignment structures, keeping manufacturing relatively simple
Solution Approach 2:
The invention changes the alignment parameters of the liquid crystal molecules through voltage control. The same liquid crystal layer can exhibit different molecular orientations and optical properties depending on the applied voltage, enabling the panel to switch between 2D and 3D modes. This parameter-based control avoids the need for complex multi-structure manufacturing
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 the display of three-dimensional images or two-dimensional images without the requirement for special glasses, enhancing user experience and functionality by utilizing the liquid crystal lens panel's ability to switch between cholesteric and non-cholesteric alignment states for image separation and transmission.
Implementation Method 1
a liquid crystal lens panel 10, which includes a lens layer 300 having a cholesteric alignment region
Implementation Method 2
the polarizer may transmit only light having a polarization axis parallel to the transmission axis direction of the polarizer among the incident light
Implementation Method 3
by controlling the alignment of liquid crystal molecules with voltage to achieve optical anisotropy and isotropy
Data Source
Figure 1~2
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AI summary
Provided is a display device. An illustrative display device of the present application may display three-dimensional images or two-dimensional images, which may be enjoyed without glasses.