Curved Substrate and Grating Layer for Naked Eye 3D Display Crosstalk Reduction
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Solution Overview
Problem
Conventional naked eye 3D display technologies suffer from crosstalk among view images due to the user often standing in a 'dead-area' where one eye views the wrong image, leading to a poor stereoscopic viewing experience.
Innovation Solution
A display panel with a curved substrate and a corresponding curved grating layer, where the substrate and grating have matching or differing curvatures to converge view images, reducing crosstalk by ensuring a constant distance between the substrate and grating along the viewing direction, thus improving the viewing effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat plate-type naked eye 3D display is used, then the display structure is simple, but crosstalk among view images occurs when users stand in dead-areas
Solution Approach 1:
The patent applies curvature to both the substrate and grating layer, transforming the flat plate structure into a curved configuration. The substrate has a first curvature and the grating layer has a second curvature, which work together to converge view images and eliminate dead-areas, thereby resolving the crosstalk problem while maintaining manufacturing feasibility
Solution Approach 2:
The patent changes the geometric parameters of the display structure by introducing specific curvature values (first curvature and second curvature) and their relationships. By controlling the radius of curvature and the distance between substrate and grating layer, the system achieves proper image convergence and eliminates crosstalk
2Ease of operation
If the radian of the curved substrate is equal to that of the curved grating layer, then constant distance is achieved improving viewing effect, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies that the radian of the curved substrate equals the radian of the curved grating layer, creating parallel curved surfaces. This geometric relationship ensures constant distance between corresponding points, which converges light rays properly and improves viewing effect while providing clear manufacturing guidelines
3Measurement precision
If the distance between curved substrate and curved grating layer equals focal length, then focusing effect is improved, but device complexity increases
Solution Approach 1:
The patent sets the distance between the curved substrate and curved grating layer equal to the focal length of the grating structure. This parameter optimization achieves proper focusing of view images, enhancing the stereoscopic effect and image quality
Solution Approach 2:
The curved geometry of both substrate and grating layer, combined with the focal length distance, creates an optical system that naturally focuses light rays to converge view images, achieving superior focusing effect through geometric design
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 curved substrate and grating configuration effectively reduces crosstalk among view images, enhancing the stereoscopic effect by ensuring that each eye receives the correct image, allowing for a better viewing experience with improved focusing and visibility across a wider range.
Implementation Method 1
view images displayed by the display panel are converged by providing in advance the curved substrate having the first curvature and the curved grating having the second curvature
Implementation Method 2
A plurality of left-viewing areas and right-viewing areas spaced from each other are presented to a user under the action of the parallax barrier or the lenticular grating
Data Source
AI summary
The present disclosure provides a display panel and a display device. The display panel includes a curved substrate having a first curvature and a curved grating layer corresponding to the curved substrate and having a second curvature, wherein, light that is emitted into the display panel is converged by means of the curved substrate having the first curvature and the curved grating layer corresponding to the substrate and having the second curvature, so as to reduce crosstalk between view images. Further, focusing effect of the view images viewed can be improved such that stereoscopic effect of the view image viewed is much more excellent as the distance between each point of the curved substrate and each point of the curved grating layer along the viewing direction is equal to the focal length for the grating structure.