Dual-Panel Display Switching 3D and 2D Modes
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Solution Overview
Problem
Existing display devices are limited to only displaying 3D images and lack the capability to switch between 3D and 2D image display, which can be inconvenient in situations requiring both modes in the same area.
Innovation Solution
A display device comprising a first and second display panel, a controller, and an optical system that allows switching between 3D and 2D image display modes by controlling subpixels and adjusting light transmission through a second display panel functioning as a controllable parallax barrier, enabling flexible switching between 3D and 2D modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a static parallax barrier is used to display 3D images, then 3D image display capability is achieved, but the device cannot switch between 3D and 2D display modes
Solution Approach 1:
The patent applies the dynamics principle by replacing the static parallax barrier with a dynamic liquid crystal display panel that can actively change its light transmission properties. The second display panel functions as a controllable parallax barrier that can switch between transparent and opaque states, enabling dynamic transition between 3D and 2D display modes based on operational requirements
Solution Approach 2:
The patent implements multi-functionality by using the second display panel to serve dual purposes: it acts as both a display element and a controllable parallax barrier. This single component performs multiple functions - displaying images in 2D mode and controlling light transmission for 3D mode, thereby eliminating the need for separate static barrier structures
2Adaptability or versatility
If a second display panel is added to enable mode switching, then display mode versatility is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the parallax barrier function into the second display panel itself, rather than adding a separate barrier component. The controller merges the control of both display panels to coordinate their operation, combining the image display function and the light modulation function into a unified system that manages both panels simultaneously
3Illumination intensity
If the second display panel is set to darker tone to attenuate light, then light management and contrast are improved, but light transmission is reduced
Solution Approach 1:
The patent applies local quality by differentiating the tone settings of different regions of the second display panel. The first areas (parallax barrier regions) are set to darker tones to attenuate light and create the barrier effect, while the second areas (transmission regions) are set to lighter tones to maintain high light transmission. This spatial variation in optical properties allows simultaneous achievement of light attenuation where needed and light transmission where required
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 flexible switching between 3D and 2D image display modes, providing high contrast and improved light management, particularly useful in applications like head-up displays where both modes are needed simultaneously.
Implementation Method 1
the controller... sets first areas including selected ones of the second subpixels to have a darker tone than second areas including selected ones of the second subpixels to attenuate at least a portion of image light passing through the third subpixels toward the right eye of the user through the first areas
Data Source
AI summary
A display device is switchable between 3D image display and 2D image display. The display device includes a first display panel, a second display panel, a controller, and an optical system. The first and second display panels each include subpixels arranged in a grid. The controller performs switching and/or is configured to perform switching between multiple display modes including a first display mode for displaying a 2D image and a second display mode for displaying a parallax image on the first display panel, and switches and/or is configured to switch a drive mode of the second display panel between multiple drive modes including a first drive mode corresponding to the first display mode and a second drive mode corresponding to the second display mode.