Microlens Array Positioning for 3D Display Viewing Angles
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Solution Overview
Problem
Conventional 3D display devices provide limited viewing angles and cause discomfort such as headaches and nausea due to restricted 3D viewing zones, and fail to offer an immersive experience as they do not adjust with the viewer's movement or changes in viewing angles.
Innovation Solution
A display device featuring a display panel with a microlens array where each microlens element is correspondingly positioned to gradually increase in distance from the center to the edge, allowing for wider viewing angles and the creation of floating 3D images that change with the viewer's perspective, enhancing the viewing experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional 3D display uses a lens or grating to separate left and right views, then binocular parallax 3D effect is achieved, but the viewing angle is limited and multiple separate viewing zones are required
Solution Approach 1:
The display panel is divided into multiple sub-pixels (red, green, blue sub-pixels) that are arranged in a specific pattern. Each sub-pixel emits light that passes through corresponding microlens elements, creating segmented light paths that converge to form a unified floating 3D image. This segmentation allows different colors and directions of light to be controlled independently, expanding the viewing angle while maintaining image quality.
Solution Approach 2:
The patent transitions from traditional 2D display to 3D floating image display by adding the depth dimension. Multiple light paths from different sub-pixels are directed through microlens elements to converge in space, creating a floating image that exists in three-dimensional space rather than on a flat screen. This dimensional transformation enables viewers to observe the image from multiple angles without being constrained to specific viewing zones.
2Ease of operation
If conventional 3D display provides fixed viewing zones, then 3D image can be observed, but the image does not change with viewer movement and causes discomfort like headaches and nausea
Solution Approach 1:
The patent creates a dynamic 3D display system where the floating image can be observed from multiple angles and positions. Unlike conventional fixed viewing zones, this system allows the image to remain stable and clear as the viewer moves, providing a dynamic viewing experience that adapts to different observation positions without causing discomfort or requiring precise positioning.
Solution Approach 2:
The microlens elements have different focal lengths and optical parameters that are specifically designed to control light propagation. By carefully selecting and arranging microlens elements with varying optical parameters, the system achieves optimal light convergence and image formation across different viewing angles, eliminating the discomfort associated with conventional fixed viewing zones.
3Adaptability or versatility
If microlens elements are positioned with increasing distance from center to edge, then floating 3D image is created with wider viewing angles, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies different positioning strategies for microlens elements based on their location. Central microlens elements have different positioning requirements compared to edge elements. The distance between microlens elements and sub-pixels varies systematically from center to edge, with each region optimized for its specific function. This local quality approach allows the complex floating image effect to be achieved while managing manufacturing precision requirements through region-specific 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 solution enables 360-degree viewing coverage, reduces image distortion, and provides a more immersive and comfortable viewing experience by allowing floating images to appear as if they are in space, aligning with human visual perception.
Implementation Method 1
a microlens array including a plurality of microlens elements disposed on top of a light emitting surface of the display panel
Data Source
AI summary
A display device is provided. The display device includes a display panel including a plurality of display units displaying a same image, and a microlens array including a plurality of microlens elements disposed on top of a light emitting surface of the display panel. The plurality of microlens elements are one-to-one corresponding to the plurality of display units, and a distance between a center of the microlens element and a center of the corresponding display unit gradually increases from a center of the display panel to an edge of the display panel.