Lenticular 3D Display Shuttering for Wider Viewing Angles
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Solution Overview
Problem
Current stereoscopic image display technologies, particularly those using lenticular lenses, face limitations in enhancing the viewing angle and display quality of stereoscopic images, as they often rely on fixed shutter mechanisms that restrict the range of directional stereoscopic images perceivable by the viewer.
Innovation Solution
The method involves a lenticular plate with multiple lenticular lenses and a barrier plate with shutters that selectively open and close in a time division manner to convert flat images into multiple stereoscopic images with varying directions, allowing for enhanced viewing angles by displaying sub-frame images in a time division method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lenticular lens is used to convert a flat image into stereoscopic images, then the viewing angle is improved, but the display quality and number of perceivable directional images are limited due to fixed shutter mechanisms
Solution Approach 1:
The patent applies the dynamics principle by making the shutter mechanism movable and controllable. Instead of a fixed shutter, the system uses independently controllable shutters that can dynamically adjust their opening and closing states. This allows the display apparatus to adaptively control which lenticular lenses are active at different times, thereby increasing the number of perceivable directional stereoscopic images from a fixed small number to a dynamically adjustable larger number, resolving the contradiction between viewing angle and display quality.
Solution Approach 2:
The patent implements periodic action through time-division multiplexing of the shutter operations. The shutters are driven to open and close in periodic cycles, with different shutter groups being activated in alternating time periods. This periodic switching allows multiple sets of directional stereoscopic images to be displayed sequentially, enabling the human visual system to integrate them into a comprehensive 3D perception, thereby expanding the effective viewing angle and display quality beyond what any single fixed shutter configuration could achieve.
2Adaptability or versatility
If multiple directional stereoscopic images are displayed simultaneously, then the viewing angle increases, but the device complexity increases due to requiring multiple shutters and time division control
Solution Approach 1:
The patent applies segmentation by dividing the lenticular lens array into multiple groups, with each group associated with a specific shutter. Instead of using one complex shutter for all lenses, the system segments the control into multiple simpler shutters that can be independently operated. This segmentation allows the display apparatus to selectively activate different groups of lenticular lenses in different time periods, thereby displaying multiple directional stereoscopic images without requiring a single overly complex shutter mechanism.
Solution Approach 2:
The patent implements multi-functionality by designing the shutter system so that each shutter can serve multiple lenticular lens groups. The shutters are not dedicated to single lenses but can control multiple lenses within their assigned groups. This universal control approach reduces the total number of shutters needed compared to a one-to-one mapping, thereby reducing device complexity while still enabling the display of multiple directional stereoscopic images through time-division multiplexing.
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 approach significantly increases the number of directional stereoscopic images perceivable, thereby improving the display quality and viewing experience by effectively expanding the range of stereoscopic image directions, allowing for a more immersive 3D experience.
Implementation Method 1
the lenticular lens can refract an incident 2D flat image at a plurality of focusing points to emit a plurality of stereoscopic images
Data Source
AI summary
A method for displaying a stereoscopic image of a display apparatus, the display apparatus can divide a received frame image corresponding to the preset column areas to generate M sub-frame images. In this example, the display apparatus may include a plurality of lenticular lenses disposed over a display panel to divide the display panel into a plurality of column areas. Each of the lenticular lenses may include a lenticular plate converting a flat image displayed on each of the column area into K stereoscopic images having directions different from each other. The M sub-frame images may be displayed on the display panel in a time division method. M shutters disposed over the M lenticular lenses according to the sub-frame image displayed on the display panel may selectively be opened and closed. Herein, K and M are natural numbers.


