Non-glasses Stereoscopic Display Sub-pixel Inversion
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Solution Overview
Problem
Conventional non-glasses stereoscopic image display devices using slanted lenses suffer from display defects, luminance differences, and 3D crosstalk due to the angle of refraction and overlapping sub-pixels, which interfere with the separation of multi-view images.
Innovation Solution
The solution involves forming optical plates side by side with sub-pixels of a display panel, altering the shape and arrangement of sub-pixels to prevent inclination, and using a lenticular lens array that aligns boundary regions with vertically overlapping sub-pixels to reduce interference and enhance image separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If slanted lenses are used to divide multi-view images, then the overlapping regions between boundary regions and black matrix are reduced, but luminance difference and 3D crosstalk occur due to large angle of refraction at edges
Solution Approach 1:
Instead of slanting the optical plate relative to the sub-pixels, the patent inverts the approach by making the optical plate parallel to the sub-pixels and instead slanting the arrangement of sub-pixels themselves. This reversal eliminates the refraction angle issues while maintaining the ability to reduce overlapping regions between boundary regions and black matrix.
Solution Approach 2:
The patent employs asymmetric arrangement of sub-pixels where vertically neighboring sub-pixels displaying different colors partially overlap each other. This asymmetric configuration allows the optical plate boundary regions to align with the overlapping regions of sub-pixels, reducing display defects and Moiré patterns without causing luminance differences or 3D crosstalk.
2Reliability
If sub-pixels are arranged to overlap with left and right half portions of lenses, then image separation is achieved, but 3D crosstalk occurs when view images pass through centers of lenses
Solution Approach 1:
The patent applies local quality by creating different arrangements for different regions. Specifically, the sub-pixels are arranged such that their overlapping regions correspond to the boundary regions of the optical plate, while the centers of the optical plate receive light from non-overlapping sub-pixel regions. This local differentiation ensures proper image separation without 3D crosstalk.
3Ease of operation
If conventional slanted lens arrangement is used, then multi-view images can be separated, but dark lines and bright lines appear due to luminance difference
Solution Approach 1:
The patent changes the geometric parameters of sub-pixel arrangement, specifically making vertically neighboring sub-pixels displaying different colors partially overlap each other. This parameter change in sub-pixel configuration, combined with making the optical plate parallel to sub-pixels, distributes luminance more uniformly across the display, eliminating dark lines and bright lines while maintaining stereoscopic functionality.
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 configuration effectively minimizes display defects, luminance differences, and 3D crosstalk, improving image quality by ensuring that multi-view images are accurately refracted into separate view areas, reducing dark lines and bright lines, and enhancing the overall stereoscopic experience.
Implementation Method 1
The non-glasses method is a method which obtains a stereoscopic image by separating the optical axes of left and right parallax images using an optical plate such as a parallax barrier or a lenticular lens
Implementation Method 2
The angle of refraction of display light entering the slanted lenses 2 from the display panel 1 is relatively large at the edges EG of the slanted lenses 2, compared to that at the centers CEN of the slanted lenses 2
Data Source
AI summary
A non-glasses type stereoscopic image display device comprises: a display panel that comprises a plurality of sub-pixels and displays multi-view images in predetermined units; and an optical plate array that is formed side by side with the sub-pixels and divides the multi-view images into a plurality of multi-view areas, each of the sub-pixels comprising a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, which alternate in the same row along a horizontal direction in which gate lines extend and are formed side by side along a vertical direction in which data lines extend in different columns, wherein vertically neighboring sub-pixels displaying different colors partially overlap each other in the vertical direction.