Display Device Optical Axis Alignment via Polarizing Member
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Solution Overview
Problem
Display devices face challenges in selectively displaying normal, stereoscopic, and multi-view images due to picture quality deterioration caused by differences in optical axes between the liquid crystal panel and lens, leading to cross-talk and reduced image quality.
Innovation Solution
Incorporating a polarizing member, such as a compensation film, between the liquid crystal lens and panel to align the optical axes, and using a liquid crystal lens that changes refractive index with electric fields to control image display modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a liquid crystal lens is tilted at a fixed angle to display multi-view images, then multi-view function is achieved, but the optical axis of the polarizer and the optical axis of the liquid crystal lens become different, causing cross-talk and picture quality deterioration
Solution Approach 1:
A compensation film is introduced as an intermediary component between the liquid crystal panel and the liquid crystal lens. This compensation film has a specific optical axis orientation that mediates the optical path, allowing the liquid crystal lens to be tilted for multi-view display while maintaining proper optical axis alignment through the compensation film's optical properties, thereby preventing cross-talk and picture quality deterioration
Solution Approach 2:
The invention changes the optical parameters of the system by introducing a compensation film with specific optical characteristics (specific optical axis orientation). This parameter change allows the system to accommodate the tilted liquid crystal lens configuration while maintaining proper optical alignment, enabling multi-view display without the negative effects of optical axis misalignment
2Ease of operation
If the optical axis of the liquid crystal lens and the optical axis of the liquid crystal panel are different due to alignment direction, then the liquid crystal lens can function, but the picture quality of stereoscopic or dual-view images deteriorates further
Solution Approach 1:
The compensation film serves as an optical intermediary that corrects the alignment mismatch between the liquid crystal panel and the tilted liquid crystal lens. By positioning the compensation film with its optical axis at a specific angle, it mediates the optical path to ensure proper alignment is maintained throughout the system, preventing picture quality deterioration while allowing the liquid crystal lens to function in stereoscopic or dual-view modes
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 enables selective display of normal, stereoscopic, and multi-view images while improving picture quality by preventing cross-talk and maintaining brightness, thus addressing the optical axis alignment issue and enhancing overall image quality.
Implementation Method 1
a liquid crystal lens which makes changes to a refractive index in accordance with an electric field
Implementation Method 2
a polarizing member interposed between the liquid crystal lens and the liquid crystal panel, wherein an axis of light transmitted through the liquid crystal lens coincides with an optical axis of the polarizer
Data Source
AI summary
Disclosed is a display device adapted to selectively display a normal image, a stereoscopic image, a multi-view image and a stereoscopic multi-view image is disclosed. The display device includes a liquid crystal panel displaying an image; a polarizer disposed on the liquid crystal panel; a liquid crystal lens disposed on the polarizer; and a polarizing member interposed between the liquid crystal lens and the liquid crystal panel, wherein an axis of light transmitted through the liquid crystal lens coincides with an optical axis of the polarizer. Accordingly, the display device can selectively display a normal image, a stereoscopic image, a multi-view image and a stereoscopic multi-view image, while improving the picture quality and the brightness.