3D Stereo Display Using Dual Liquid Crystal Panels for Full Resolution
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Solution Overview
Problem
Current 3D stereo display technologies, such as Active Stereo and Passive Stereo, suffer from reduced image resolution and luminance issues, with Active Stereo causing image overlap and Passive Stereo reducing resolution to half in 3D mode, leading to a suboptimal viewing experience.
Innovation Solution
A liquid crystal display system comprising a backlight source, a first polarizer, a first liquid crystal panel, and a second polarizer and liquid crystal panel, where the second panel switches light polarization between horizontal and vertical, allowing for alternating left-eye and right-eye image display without reducing resolution, using a graphics processor to control the polarization switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Active Stereo technology is used to display 3D images, then stereoscopic effect is achieved, but image resolution is reduced and luminance decreases due to alternating display and lens closing
Solution Approach 1:
The patent divides the display system into two separate liquid crystal panels: the first panel displays the left-eye image while the second panel displays the right-eye image simultaneously. This segmentation allows both images to be displayed at full resolution without alternating, resolving the contradiction between achieving stereoscopic effect and maintaining image resolution
Solution Approach 2:
The patent introduces polarizing filters as intermediaries between the two panels and the viewer. The first panel uses a polarizing filter with one orientation (e.g., vertical) and the second panel uses a polarizing filter with perpendicular orientation (e.g., horizontal). This allows both images to pass through simultaneously to the respective eyes without interference, maintaining full luminance and resolution while achieving stereoscopic effect
2Reliability
If Passive Stereo technology is used to display 3D images, then stereoscopic effect is achieved without lens switching, but image resolution is reduced to half due to pixel extraction
Solution Approach 1:
Instead of extracting alternate pixels from a single panel (which reduces resolution), the patent segments the display into two full-resolution panels. Each panel displays a complete image at full pixel count, eliminating the resolution loss inherent in pixel extraction methods while maintaining the passive stereo effect through polarizing filters
Solution Approach 2:
The patent combines two full-resolution image displays in parallel within the same physical display space. Both left-eye and right-eye images are displayed simultaneously at their complete resolution, then merged through the polarizing filters to deliver full-resolution stereoscopic images to the viewer's eyes
3Reliability
If Active Stereo alternating display is used, then stereoscopic effect is achieved, but viewing experience deteriorates due to blinking phenomenon and image darkness
Solution Approach 1:
The patent implements continuous display of both left-eye and right-eye images simultaneously through two parallel panels, eliminating the alternating display mechanism. This continuous action removes the blinking phenomenon entirely, as both images are always present at full luminance, dramatically improving viewing experience while maintaining stereoscopic effect
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 maintains full image resolution in 3D mode by ensuring all pixels are displayed simultaneously, improving the viewing experience compared to existing methods, with no need to switch off polarized spectacles, resulting in enhanced efficiency and clarity.
Implementation Method 1
a first polarizer, a first liquid crystal panel, a second polarizer and a second liquid crystal panel sequentially arranged on the backlight source; wherein the second liquid crystal panel is used to switch the polarizing angle of the light traveling through and exiting from the second liquid crystal panel
Data Source
AI summary
A three-dimensional stereo display, and a system and method are provided for controlling the three-dimensional stereo display. The three-dimensional stereo display includes backlight, a first polarizer, a first liquid crystal panel, a second polarizer and a second liquid crystal panel which are sequentially arranged on the backlight source. The second liquid crystal panel switches the polarizing angle of the light travelling through and exiting from said second liquid crystal panel between a horizontal and vertical polarization. Due to the polarization direction of light could be changed by the liquid crystal panel, and makes the light for the left-eye image and the right-eye image are mutual perpendicular. The polarization direction of the light for the left-eye image is the same as that of the left lens, and the polarization direction of the light for the right-eye image is the same as that of the right lens. So the light belongs to the left-eye image or the right-eye image can pass through the left lens or the right lens respectively, then a stereo image will emerge in people's brain due to the effect of “fusion activity”. Further, there is no need to close the polarized spectacles, the displaying efficiency is improved compared with the “Active Stereo”.