Autostereoscopic Display Pixel Shift Alignment
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Solution Overview
Problem
Autostereoscopic display apparatuses face challenges in maintaining comfortable stereoscopic viewing due to misalignment between the lenticular lens and the display device, leading to asymmetrical viewpoint presentation and reduced convenience for viewers.
Innovation Solution
An autostereoscopic display apparatus with a display device featuring color pixels arranged in longitudinal stripes and an optical member with inclined cylindrical lenses, along with a display position adjustment unit that shifts projected image data by precise pixel amounts to align viewpoints symmetrically, allowing for comfortable viewing adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the lenticular lens and display device are manufactured with precise sub-pixel alignment, then symmetrical viewpoint presentation is achieved, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The patent creates a virtual copy of the display image with adjusted pixel arrangement that compensates for the physical misalignment between the lenticular lens and display device. By generating a corrected image pattern that mirrors the actual lens positions, the system achieves symmetrical viewpoint presentation without requiring precise physical alignment during manufacturing.
2Adaptability or versatility
If the number of viewpoints is increased to expand viewing region, then stereoscopic viewing quality improves, but resolution of each viewpoint decreases
Solution Approach 1:
The patent applies different pixel allocation strategies to different regions of the display. By optimizing the distribution of pixels to multiple viewpoints in a non-uniform manner, the system maintains higher resolution in critical viewing zones while still providing acceptable resolution across an expanded viewing region, thereby balancing quality and coverage.
3Adaptability or versatility
If the lens pitch is increased to divide parallax image into more viewpoints, then viewing region expands, but color pixel size relative to lens pitch increases degrading resolution
Solution Approach 1:
The patent transitions from a one-dimensional linear arrangement of pixels to a two-dimensional matrix arrangement that maps multiple viewpoints across both horizontal and vertical dimensions. This dimensional transformation allows the system to increase the number of viewpoints while maintaining resolution by utilizing the additional spatial dimension for viewpoint distribution.
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 comfortable stereoscopic viewing by adjusting the viewing region through precise pixel shifts, maintaining symmetry and improving user convenience without requiring complex realignment of the lenticular lens and display device.
Implementation Method 1
an optical member with inclined cylindrical lenses... by dividing and presenting the image displayed on a display device such as a print surface or a liquid crystal display panel in multiple viewpoint directions
Data Source
AI summary
A display device is configured so that color pixels of a plurality of colors are formed in a longitudinal stripe shape. A lenticular lens is arranged on the display device, in which a periodical direction thereof is inclined with respect to the horizontal direction of the display device. A display position adjustment unit shifts a projected image data in predetermined pixel shift amounts of the respective horizontal and vertical directions including the pixel shift amount of 0, in a unit of one pixel defined by each of the color pixels of the plurality of colors in the horizontal direction of the display device and in a unit of each of the color pixels in the vertical direction thereof. A driving unit drives the display device to display the projected image data thereon.