Subpixel Array Temporal Multiplexing for Color Gamut Expansion
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Solution Overview
Problem
Conventional subpixel arrays struggle to reproduce colors with wavelengths outside the range of red or blue, often requiring additional subpixels that increase pixel size and reduce resolution, unless subpixel sizes are shrunk beyond current capabilities.
Innovation Solution
The method involves generating and transferring subframes with fractional intensity ranges of an image to a subpixel array, using temporal multiplexing and optical systems to reconstitute the image, allowing each subpixel to be formed by light from multiple subpixels across multiple frames, thereby enhancing color reproduction without increasing pixel size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional subpixels are added to reproduce colors outside the red-blue wavelength range, then color gamut is improved, but pixel size increases and resolution decreases
Solution Approach 1:
The image data is segmented into multiple subframes, each containing a fraction of the intensity range. This segmentation allows the system to process and transfer data in manageable portions while maintaining the ability to reproduce a broader color range through temporal multiplexing of the segmented frames.
Solution Approach 2:
The patent transitions from spatial dimension (adding more subpixels) to temporal dimension (using multiple subframes in time). By distributing intensity ranges across multiple temporal frames and using a movable light deviator to shift light laterally, the system achieves expanded color gamut without increasing the spatial pixel size, thereby maintaining resolution.
2Manufacturing precision
If subpixel sizes are shrunk to maintain resolution with additional subpixels, then resolution is improved, but manufacturing capabilities are exceeded
Solution Approach 1:
Instead of shrinking subpixels in the spatial dimension, the patent uses temporal multiplexing across multiple subframes and lateral light shifting to achieve the same resolution enhancement. This approach stays within current manufacturing capabilities while achieving the desired resolution and color gamut expansion.
3Loss of information
If image data is transferred as complete frames, then data completeness is maintained, but data transfer time increases
Solution Approach 1:
The complete image data is divided into multiple subframes, each containing a fraction of the intensity range. This segmentation enables parallel processing and transfer of smaller data portions, reducing overall transfer time while maintaining complete color information through the combination of all subframes.
Solution Approach 2:
Each subframe contains only a partial range of intensities rather than the complete intensity range. This partial action approach allows for more efficient data transfer of smaller subsets, which when combined temporally, reconstruct the complete image with full color information.
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 enables the reproduction of a broader color range without increasing pixel size, improving color gamut and resolution while maintaining efficient data transfer and display performance.
Implementation Method 1
an optical system that (1) receives light from at least one of a plurality of subpixels of an emissive array, (2) laterally shifts the received light by a light deviator that is movable between a plurality of positions corresponding to one or more lateral-light-shifting degrees of freedom
Data Source
AI summary
A method for transferring an image to a subpixel array may include generating a set of subframes in which each subframe contains a fraction of the range of intensities of the image. The bit-depth of the subframes may be reduced from the bit-depth of the image. The computer-implemented method may include (1) receiving image data for an image including a set of intensities in one or more channels, (2) processing the image data into subframe data for a plurality of subframes, each subframe including a fractional range of intensities that are a subset of the set of intensities of the image, and (3) temporally multiplexing the plurality of subframes generated from the subframe data to reconstitute the image in a viewing region using an optical system having a light deviator that laterally shifts light from an emissive array. Various other apparatus, systems, and methods are also disclosed.