Twisted Parallelogram Subpixel Array for 2D and 3D Display Resolution
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Solution Overview
Problem
Conventional display technologies, such as liquid crystal display devices and organic light emitting diode displays, face challenges in achieving high visual resolution due to limitations in subpixel size reduction, particularly in Pentile mode and naked eye 3D mode, which results in reduced PPI and degraded 3D visual effects.
Innovation Solution
A pixel array with subpixel groups arranged in a twisted manner, where subpixels in odd and even columns are oppositely twisted, and shaped as parallelograms, combined with a display driving method that segments images into theoretical pixel elements and sets luminance based on color components using specific sampling regions, effectively improving visual resolution in both 2D and 3D display modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If subpixel size is reduced to improve resolution, then visual resolution is improved, but manufacturing precision becomes insufficient due to process limitations
Solution Approach 1:
The patent transitions from traditional rectangular subpixel arrangements to a triangular lattice arrangement where subpixels are positioned at vertices of equilateral triangles. This dimensional reorganization allows achieving higher effective resolution without further reducing subpixel size, as the triangular packing provides more efficient space utilization and better color sampling geometry.
Solution Approach 2:
The patent implements dynamic subpixel sharing where subpixels are temporarily assigned to different pixels depending on the rendering needs. In Pentile mode, subpixels can be shared between adjacent pixels to render colors that would otherwise require additional subpixels, allowing the system to adaptively optimize resolution based on local image requirements rather than being constrained by fixed physical subpixel positions.
2Device complexity
If Pentile mode is used to improve visual effect with fewer subpixels, then device complexity is reduced, but manufacturing precision requirements increase due to subpixel sharing
Solution Approach 1:
The patent employs asymmetric subpixel sharing strategies where different subpixels are shared with different neighboring pixels based on the specific color rendering requirements. Rather than uniform sharing, the system selectively assigns subpixels to adjacent pixels to optimize color accuracy and luminance distribution, reducing the impact of manufacturing variations through intelligent compensation algorithms.
3Adaptability or versatility
If naked eye 3D mode with grating is used to enable 3D display, then adaptability is improved, but visual resolution deteriorates due to light barrier grating design
Solution Approach 1:
The patent merges the 3D display function with the Pentile subpixel sharing architecture by integrating the grating structure into the existing triangular subpixel lattice. The grating lines are positioned to align with the triangular pattern, allowing light from shared subpixels to be properly directed to the appropriate eye while maintaining the resolution benefits of the triangular arrangement. This integration ensures that the 3D function does not compromise the resolution improvements achieved through triangular packing.
Data Source
AI summary
A pixel array, a display driving method, a display driving device and a display device are described. The pixel array comprises a plurality of columns of subpixel groups. Each column of subpixel group comprises M×N subpixels, where N is the number of colors of subpixels, and M is an integer equal or greater than 3. Directions in which subpixels of the subpixel groups in odd columns and subpixels of the subpixel groups in even columns are twisted respectively being opposite in a column direction. The pixel array is suitable for application of Pentile technologies under 2D/3D display mode.