3D Display Phase Retarder Deviation for Tilted Viewing Crosstalk
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Solution Overview
Problem
Conventional three-dimensional image display apparatuses experience image crosstalk when the LCD is tilted, as the film-type patterned retarder's pitch must align with the viewer's line of sight to reduce crosstalk, limiting flexibility in display orientation.
Innovation Solution
A three-dimensional image display apparatus design that allows the phase retarding regions of the film-type patterned retarder to be deviated from the pixel regions, using a composite layer with a color filter and black matrices, where the deviated distance is calculated based on refraction indices and angles to maintain clear three-dimensional imaging even when the display is tilted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the FPR pitch is aligned with the viewer's line of sight to reduce image crosstalk, then the visual frontal effect is improved, but the display cannot be tilted with respect to the viewer
Solution Approach 1:
The patent introduces a deviation distance in the horizontal direction between the FPR and display panel, adding a new spatial dimension to the alignment problem. Instead of only vertical alignment, the FPR is deliberately offset horizontally by a calculated distance, allowing the display to be tilted while maintaining proper optical alignment for the viewer.
Solution Approach 2:
The patent changes the alignment parameter from zero deviation (traditional alignment) to a specific non-zero deviation distance. This parameter change allows the system to accommodate tilted display orientations while maintaining image quality and reducing crosstalk, as the deviation distance is calculated based on the tilt angle and optical properties.
2Adaptability or versatility
If the LCD is tilted with respect to the viewer, then the adaptability of display orientation is improved, but image crosstalk occurs when the viewer's line of sight faces squarely the pixels
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-setting the deviation distance between the FPR and display panel before the display is tilted. This pre-established offset compensates for the tilt effect, ensuring that when the viewer looks at the display, the optical paths are properly aligned and crosstalk is minimized, even though the display is tilted.
3Ease of manufacture
If the FPR pitch is aligned with the pixels, then the manufacturing precision is simplified, but the visual frontal effect is reduced when the display is tilted
Solution Approach 1:
The patent moves the alignment compensation from the vertical dimension (where traditional alignment occurs) to the horizontal dimension. By introducing a horizontal deviation distance, the system maintains manufacturing simplicity in the vertical alignment while achieving proper optical alignment through the horizontal offset, thus preserving both ease of manufacture and visual quality.
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 design effectively avoids image crosstalk when the viewer looks at a tilted LCD display, ensuring clear three-dimensional imaging by aligning the phase retarding regions with the viewer's line of sight, thus improving the visual frontal effect without requiring the display to be aligned squarely with the viewer's line of sight.
Implementation Method 1
A refraction direction 'DR' is defined as a direction from the one of the boundary regions 116 to one of the black matrixes correspondingly, and the refraction direction 'DR' and the normal direction form a refraction angle (θ2)
Data Source
AI summary
A three-dimensional image display apparatus is described. The three-dimensional image display apparatus includes a display panel and a film-type patterned retarder. The three-dimensional image display apparatus allows the phase retarding regions of the film-type patterned retarder to be deviated from the pixel regions of the display panel so that the line of vision the viewer along the extension of the phase retarding direction corresponds to the pixel regions of the display panel. In other words, the phase retarding regions of the film-type patterned retarder deviate from the pixel of the display panel to avoid the image crosstalk when the viewer looks on the three-dimensional image display apparatus.