Cell-Type Parallax Barrier for Stereoscopic Display Orientation
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Solution Overview
Problem
Conventional parallax-barrier stereoscopic image display apparatuses face issues such as reduced luminance, limited visibility angle, and restricted watching distance due to fixed barrier arrangements and the blocking of RGB colors by vertical barriers, which also restrict image viewing to a specific direction.
Innovation Solution
A cell-type parallax-barrier using a liquid crystal panel that can be converted between horizontal and vertical orientations, allowing for improved luminance and flexibility in image display by controlling pixel arrangements and polarized light directions, enabling 2D to 3D mode conversion and rotation of RGB pixels by 90°.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional parallax-barrier with vertical barriers is used, then stereoscopic image display is achieved, but luminance is reduced and visibility angle is limited
Solution Approach 1:
The patent applies the dynamics principle by making the barrier orientation changeable from fixed vertical to switchable between vertical and horizontal orientations. The liquid crystal layer enables the barrier to dynamically adjust its orientation based on driving signals, allowing the system to adapt to different viewing conditions and maximize luminance transmission while maintaining stereoscopic display functionality.
Solution Approach 2:
The patent implements parameter changes by altering the physical orientation parameter of the barrier from fixed vertical to variable (vertical/horizontal). This parameter change allows the barrier to optimize light transmission characteristics, improving luminance by reducing blocking effects while expanding the visibility angle through flexible orientation adjustment.
2Reliability
If vertical barriers are used to separate left and right images, then stereoscopic separation is achieved, but RGB colors are blocked and watching distance is restricted
Solution Approach 1:
The patent applies dynamics by enabling the barrier to switch between vertical and horizontal orientations dynamically. This allows the system to maintain reliable stereoscopic separation when needed while also permitting extended watching distances by switching to horizontal orientation that blocks less light and allows better color transmission.
Solution Approach 2:
The patent implements multi-functionality by designing the barrier to perform multiple functions: it can operate in vertical orientation for standard stereoscopic separation and switch to horizontal orientation for extended viewing distances and improved color transmission. This universal design allows a single barrier structure to serve multiple display scenarios.
3Ease of manufacture
If fixed barrier orientation is used, then manufacturing is simplified, but viewing direction is restricted to specific angles
Solution Approach 1:
The patent applies dynamics by transforming the static barrier orientation into a dynamic, switchable configuration. The liquid crystal layer enables the barrier to change orientation based on driving signals, allowing the system to maintain manufacturing simplicity while achieving multi-directional viewing capability through electronic control rather than mechanical complexity.
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
Enhances luminance, visibility angle, and watching distance while simplifying manufacturing and reducing costs by allowing flexible barrier orientation and pixel control, enabling stereoscopic image display in various directions without blocking RGB colors.
Implementation Method 1
a liquid crystal layer (LC layer) which has pixels arranged in a cell type to form a barrier of horizontal or vertical direction according to a predetermined control method
Implementation Method 2
controlling pixel arrangements and polarized light directions
Data Source
AI summary
A parallax-barrier comprises a Liquid-Crystal layer (LC layer) including pixels that form a barrier according to a control method. A controller controls the pixels of the LC layer to form a barrier pattern, by turning pixels on or off according to the control method. A lower layer is formed between the LC layer and a display module to dispose the LC layer and controller at a position off the display module by a predetermined distance. An upper layer is formed on the LC layer to dispose the LC layer and controller, and a polarizer on the upper layer, and visualizing the barrier according to the barrier pattern on the LC layer by controlling polarization angle of the light. The light passes through the lower layer, LC layer and upper layer. Stereoscopic images that are rotated in the horizontal/vertical direction can be displayed using the parallax-barrier and stereoscopic image.