Near-eye Display Light-splitting for 3D Depth and Resolution
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Solution Overview
Problem
Near-eye display devices struggle to achieve high display resolution due to inconsistencies between monocular focusing distance and binocular convergence distance, leading to discomfort such as dizziness in observers, especially when trying to maintain a 3D scene with three-dimensional depth of field.
Innovation Solution
A near-eye display device comprising a light source device that emits single-colored light beams, a light guide device to transmit these beams, a display panel to control color and grayscale, and a light-splitting device to split light beams into sub-beams directed at multiple viewpoints of the eye, allowing for monocular depth of field focusing while enhancing display resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If binocular parallax is used to generate 3D display effect, then 3D depth perception is achieved, but monocular focusing distance and binocular convergence distance become inconsistent causing observer discomfort
Solution Approach 1:
The patent segments the display into multiple sub-pixels (first, second, third, and fourth sub-pixels) within each pixel region, allowing independent control of light transmission for left and right eyes at different depths. This segmentation enables simultaneous presentation of multiple depth layers, resolving the conflict between 3D depth perception and visual comfort by providing accurate monocular focusing cues for each depth plane.
Solution Approach 2:
The patent introduces a depth dimension control mechanism by varying light transmission intensities across multiple sub-pixels to create different depth layers. By controlling the transmission intensity of each sub-pixel independently, the system creates a multi-layered depth structure that allows the observer's eye to focus at different distances, thereby resolving the inconsistency between monocular focusing distance and binocular convergence distance.
2Measurement precision
If display resolution is increased for near-eye display, then visual clarity improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges multiple functions into a single display panel structure. The same display panel simultaneously serves as the light modulation device for multiple sub-pixels, the depth control mechanism, and the 3D image presentation interface. By combining these functions into one integrated structure rather than using separate components, the patent achieves high display resolution while avoiding the complexity that would arise from multiple stacked devices.
3Manufacturing precision
If multiple sub-pixels with different transmission intensities are used to create depth layers, then 3D depth accuracy improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent makes each sub-pixel structure multi-functional: the same sub-pixel structure serves as both a display element and a depth control element. By varying the transmission intensity of identical sub-pixel structures rather than requiring different types of optical components for different depth layers, the patent achieves accurate depth layering while maintaining ease of manufacture through standardized fabrication processes.
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 effectively increases display resolution and improves the 3D display experience by aligning focus with the 3D scene, reducing discomfort and enhancing visual clarity.
Implementation Method 1
a light guide device, on a light-emergent side of the light source device, and configured to receive and transmit the plurality of single-colored light beams from the light source device and to guide the plurality of single-colored light beams to emit outwards from a light-emergent side of the light guide device
Implementation Method 2
a light-splitting device, on a light-emergent side of the display panel and configured to split emergent light beams from individual ones of the plurality of pixels into a plurality of sub-beams propagating towards a plurality of viewpoints of the human eye respectively
Data Source
AI summary
A near-eye display device and a near-eye display method for human eye of an observer are provided in embodiments of the disclosure, the near-eye display device including: a light source device, configured to emit a plurality of single-colored light beams sequentially; a light guide device, on a light-emergent side of the light source device, and configured to receive and transmit the plurality of single-colored light beams from the light source device and to guide the plurality of single-colored light beams to emit outwards from a light-emergent side of the light guide device; a display panel, on the light-emergent side of the light guide device and comprising a plurality of pixels, and configured to receive the plurality of single-colored light beams from the light guide device and to control both color and grayscale of emergent light beams generated by the plurality of snide-colored light beams which are incident on the display panel and transmitted through the plurality of pixels, and then exit the display panel; and a light-splitting device, on a light-emergent side of the display panel and configured to split emergent light beams from individual ones of the plurality of pixels into a plurality of sub-beams propagating towards a plurality of viewpoints of a-the human eye respectively