Adaptive Parallax Barrier for Stereoscopic Display Orientation
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Solution Overview
Problem
Conventional stereoscopic image display devices experience a deterioration in color display quality when the screen orientation is changed from portrait to landscape mode, due to uneven light emission of RGB subpixels, leading to improper white representation and overall color degradation.
Innovation Solution
A display device with a configuration that includes an image display portion, a display mode setting portion, and an image control portion, where the image control portion selectively allows or blocks color light emission of subpixels based on their positions in the vertical or horizontal direction, ensuring equal light entry for both eyes regardless of screen orientation, using a parallax barrier that adapts to the display mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sub pixels of RGB are repeatedly arranged in the vertical direction to enable stereoscopic display, then stereoscopic image visibility is achieved, but color display quality deteriorates when screen orientation changes from portrait to landscape mode
Solution Approach 1:
The patent applies dynamics by making the sub-pixel arrangement adaptive to screen orientation. The system dynamically switches between vertical arrangement (for portrait mode) and horizontal arrangement (for landscape mode) of RGB sub-pixels, allowing the display to optimize both stereoscopic visibility and color quality based on the current display mode. This dynamic reconfiguration resolves the contradiction by enabling the system to maintain reliable stereoscopic display while preserving color accuracy across different orientations.
Solution Approach 2:
The patent changes the arrangement parameter of sub-pixels from fixed vertical ordering to orientation-dependent configuration. In portrait mode, sub-pixels are arranged vertically (R-G-B from top to bottom), while in landscape mode, they are arranged horizontally (R-G-B from left to right). This parameter change allows the system to maintain proper color balance and stereoscopic separation regardless of screen rotation, thereby resolving the contradiction between stereoscopic visibility and color display quality.
2Reliability
If parallax barrier is placed to separate left and right eye images, then stereoscopic effect is achieved, but color uniformity deteriorates when eyes shift from appropriate position
Solution Approach 1:
The patent applies local quality by ensuring that each eye receives a balanced spectrum of RGB light through the parallax barrier. The sub-pixel arrangement is designed so that regardless of slight eye position shifts, each eye consistently receives proportional amounts of red, green, and blue light. This local optimization of light distribution maintains color uniformity while preserving the stereoscopic separation effect, resolving the contradiction between stereoscopic reliability and color uniformity.
3Adaptability or versatility
If screen orientation is changed from portrait to landscape mode, then viewing flexibility is improved, but color accuracy deteriorates due to uneven light emission
Solution Approach 1:
The patent implements dynamics by dynamically reconfiguring the sub-pixel arrangement based on screen orientation detection. When the screen rotates from portrait to landscape mode, the system switches from vertical to horizontal sub-pixel ordering, maintaining consistent color accuracy across both orientations. This dynamic adaptation resolves the contradiction by preserving viewing flexibility while preventing color accuracy deterioration.
Solution Approach 2:
The patent achieves universality by designing a sub-pixel arrangement system that functions correctly in both portrait and landscape modes. The same display hardware can universally support multiple orientations with proper color reproduction by simply changing the sub-pixel arrangement pattern. This multi-functional design resolves the contradiction between viewing flexibility and color accuracy, allowing the display to maintain high performance across different use scenarios.
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
Maintains high color display quality and stereoscopic image visibility even when the screen is rotated, by ensuring consistent light distribution and parallax alignment for both portrait and landscape modes.
Implementation Method 1
a parallax barrier method in which vertical grid-like openings are placed in front of respective images for left and right eyes so that the images are separately observed via the openings
Data Source
AI summary
In an example display device for displaying a stereoscopic image, plural stereoscopic pixels composed of pixels for right eye and pixels for left eye are arranged in the horizontal direction and the vertical direction. A parallax barrier according to a vertical display mode or a horizontal display mode is formed. The pixel for right eye and the pixel for left eye each include at least one sub pixel for each of red, blue, and green. In the vertical display mode, sub pixels at first intervals in the horizontal direction are not allowed to emit color lights, and sub pixels at second intervals in the vertical direction are allowed to emit color lights. In the horizontal display mode, sub pixels at second intervals in the vertical direction are not allowed to emit color lights, and sub pixels at first intervals in the horizontal direction are allowed to emit color lights.