Patterned Retarder 3D Display Vertical Resolution
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Solution Overview
Problem
Current display apparatuses using stereoscopic 3D techniques suffer from low vertical resolution and degraded visibility due to cross-talk at upward or downward viewing angles, particularly in glass type displays.
Innovation Solution
The implementation of a display apparatus with a driving circuit, display panel, and patterned retarder, where the display panel includes sub-pixels with distinct electrodes and retarders providing different directivities for left-eye and right-eye images, enhancing vertical resolution and preventing cross-talk by using black gray scale voltages in 3D mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a glass type stereoscopic 3D technique is used to display 3D images, then the 3D effect is achieved, but the vertical resolution becomes lower than that of 2D images
Solution Approach 1:
The patent divides each pixel into multiple sub-pixels (first, second, third sub-pixels) with different electrode configurations. Each sub-pixel is assigned to display either left-eye or right-eye image data, allowing the system to maintain high vertical resolution while providing stereoscopic 3D functionality. This segmentation enables independent control of light transmission for each eye without compromising resolution.
Solution Approach 2:
The patent applies different retarder configurations to different regions of the display. Specifically, first retarders are positioned over first and third sub-pixels while second retarders are positioned over second sub-pixels. This local differentiation allows each region to optimize its light transmission properties for its specific function, thereby maintaining high vertical resolution across the entire display while achieving 3D effect.
2Reliability
If a glass type stereoscopic 3D technique is used to display 3D images, then the 3D effect is achieved, but visibility is degraded due to cross-talk at upward or downward viewing angles
Solution Approach 1:
The patent introduces patterned retarders as intermediary elements between the liquid crystal layer and the viewer. These retarders (first and second retarders with different optical axes) act as mediators that selectively control the polarization state of light transmitted from different sub-pixels. This intermediary structure prevents cross-talk by ensuring that left-eye and right-eye image data are transmitted with distinct polarization characteristics, even at extreme viewing angles.
Solution Approach 2:
The patent employs asymmetric retarder configurations where first retarders and second retarders have different optical axis orientations. This asymmetry creates distinct light transmission paths for left-eye and right-eye images, preventing cross-talk. The asymmetric design ensures that each eye receives only its designated image data regardless of viewing angle, eliminating the cross-talk problem inherent in symmetric glass-type 3D displays.
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 configuration improves the vertical resolution and visibility of 3D images by distinctively directing left-eye and right-eye images and preventing cross-talk, thereby enhancing the overall viewing experience.
Implementation Method 1
The patterned retarder is disposed on the display panel to transmit the first image or the second image and includes at least one first retarder providing a first directivity to the left-eye image and at least one second retarder providing a second directivity different from the first directivity to the right-eye image
Data Source
AI summary
A display apparatus including a display panel and a patterned retarder disposed on the display panel. The display apparatus displays a first image in a 2D mode and displays a second image including a left-eye image and a right-eye image in a 3D mode. Each of the sub-pixels included in the display panel includes two or three sub-pixel electrodes, and the patterned retarder includes a first retarder and a second retarder, which provide different directivities from each other to the left-eye image and the right-eye image, respectively. The first retarder is disposed corresponding to at least a portion of the sub-pixels and the second retarder is disposed corresponding to a remaining portion of the sub-pixels.