Switchable 3D Display Using Spatial Optical Modulator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional 3D image display devices reduce the resolution of images for each eye and generate cross-talk due to simultaneous display on a single panel, leading to an inaccurate 3D viewing experience.
Innovation Solution
A high resolution 2D/3D switchable display apparatus featuring a display panel with pixel units, a lenticular lens array dividing light into visual regions for left and right eyes, and a spatial optical modulator that switches cells in synchronization with vertical scanning, allowing alternate display of even and odd field images to maintain resolution and reduce cross-talk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If images for left and right eyes are simultaneously displayed on a single panel using different columns, then 3D stereoscopic viewing is enabled, but the resolution of each image is reduced to 1/2 of the original display panel resolution
Solution Approach 1:
The patent applies periodic action by alternately displaying left and right eye images in sequential time slots (even fields and odd fields) rather than simultaneously. The display panel sequentially displays even fields containing left eye image data followed by odd fields containing right eye image data, creating a time-division multiplexed 3D display system that maintains full resolution while enabling stereoscopic viewing
Solution Approach 2:
The patent employs dynamics through the use of a spatial light modulator with cells that dynamically switch between transparent and opaque states in synchronization with the alternating field display. This dynamic switching controls light transmission to direct even fields to the left eye and odd fields to the right eye, enabling 3D viewing without resolution loss
2Manufacturing precision
If left and right eye images are alternately displayed over the whole panel at high speed, then original resolution is maintained, but cross-talk is generated between left and right eye images
Solution Approach 1:
The patent applies segmentation by dividing the display into separate even fields and odd fields, with each field containing specific eye image data. The spatial light modulator is also segmented into cells that can be independently controlled. This segmentation allows precise control of light transmission for each eye's image data, preventing cross-talk while maintaining full resolution
Solution Approach 2:
The patent implements feedback through synchronization between the field switching signal and the spatial light modulator cell switching. The cells switch their transparent/opaque states in coordination with the display of even and odd fields, creating a feedback mechanism that ensures light is transmitted only for the intended eye's image during each time slot, thereby eliminating cross-talk
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
The solution maintains original resolution and minimizes cross-talk, enabling accurate 3D imaging without compromising 2D display quality, with the apparatus being compatible with multiview stereoscopic images and suitable for mass production.
Implementation Method 1
a lenticular lens array including a plurality of lenticular lenses arranged in a horizontal direction and dividing light emitted from the display panel to visual regions of left eye and right eye
Data Source
AI summary
A high resolution 2D/3D switchable display apparatus includes a display panel having display elements arranged in pixel units and configured to display an image. A lenticular lens array includes a plurality of lenticular lenses arranged in a horizontal direction and dividing light corresponding to a signal emitted from the display panel to visual regions of left and right eyes. A spatial optical modulator includes a plurality of cells configured to switch on or off in synchronization with a vertical scanning time of the display panel, wherein each of the plurality of cells is changed to a transparent or opaque state. The display panel sequentially displays an even field including even sequence data of a left eye image and a right eye image and an odd field including odd sequence data of the left eye image and the right eye image.