Electro-wetting Prism Array for 2D/3D Switchable Display
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Solution Overview
Problem
Current stereoscopic image display devices that do not use glasses struggle to provide high-quality 3D images and require compatibility with existing 2D/3D switching, while existing solutions often result in irritation and suboptimal image quality.
Innovation Solution
A 2D/3D switchable image display device incorporating a backlight unit, a light modulation panel, an electro-wetting prism array, and a control unit that adjusts light direction for 3D mode and maintains path in 2D mode, utilizing electro-wetting prisms with colored media and a variable diffuser unit for scattering or transparency control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stereoscopic image display devices use 3D eyeglasses, then 3D image quality can be improved, but user comfort deteriorates due to irritation
Solution Approach 1:
The patent removes the eyeglasses component from the stereoscopic display system entirely. Instead of using glasses with polarizing filters or other optical elements, the invention uses an electro-wetting prism array directly integrated into the display panel to achieve 3D effects, thereby eliminating the source of user irritation while maintaining 3D image quality
Solution Approach 2:
The electro-wetting prism array serves as an intermediary component between the display panel and the viewer's eyes. This prism array manipulates light paths to create stereoscopic effects without requiring external eyeglasses, acting as a mediator that enables 3D visualization while maintaining comfort
2Adaptability or versatility
If image display devices switch between 2D and 3D modes, then compatibility with existing panels and contents is maintained, but device complexity increases
Solution Approach 1:
The electro-wetting prisms can dynamically change their refractive properties by adjusting the electro-wetting effect through voltage control. This dynamic adjustment allows the same optical component to serve both 2D and 3D display modes without requiring separate fixed components for each mode, thereby managing complexity while maintaining versatility
Solution Approach 2:
The electro-wetting prism array performs multiple functions: it acts as a color filter, a light direction controller, and a mode-switching element. By integrating these functions into a single component, the patent reduces overall device complexity while achieving 2D/3D compatibility
3Ease of manufacture
If electro-wetting prisms are used for color provision and light direction, then manufacturing is simplified by eliminating additional color filters and black matrices, but light loss may increase
Solution Approach 1:
The patent combines the color filtering function and the light direction function into the electro-wetting prism array itself. The prisms contain colored media that provide color separation while simultaneously directing light to appropriate view zones. This merging eliminates the need for separate color filters and black matrices, simplifying manufacturing while the optical design minimizes light loss through efficient path management
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 device achieves high-quality 3D image display without glasses, maintains brightness, and simplifies manufacturing by eliminating the need for additional color filters and black matrices, while ensuring wide viewing angles and reduced light loss.
Implementation Method 1
an electro-wetting prism array comprising a plurality of electro-wetting prisms that are arranged in correspondence to a plurality of pixels of the image, for providing color to light beams that penetrate the plurality of electro-wetting prisms, and for adjusting the direction of the light beams
Implementation Method 2
a variable diffuser unit that is switchable between a scattering mode for scattering passing light and a transparent mode for transmitting passing light without scattering
Data Source
AI summary
A two-dimensional (2D)/three-dimensional (3D) switchable image display device is provided. The 2D/3D switchable image display device forms gradation of an image in a light modulation panel, provides color to light beams that penetrate a plurality of electro-wetting prisms arranged in correspondence to the plurality of pixels of the image, and adjusts the direction of the light beam such that the light beams of the pixels of the image are directed towards at least two different view zones in a 3D mode and such that the light beams maintain their paths in a 2D mode.