Display Panel Lens Layout for Wide-Angle 3D Viewing
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Solution Overview
Problem
Super multi-view (SMV) 3D display technology faces issues such as resolution loss, optical crosstalk due to limited light-condensing capacity, and dead areas when attempting to achieve large viewing angles, especially in large-size screens.
Innovation Solution
A display panel design with a pixel array layer and lens array layer, where small pixel islands are arranged with varying focal lengths and cylindrical lenses, allowing for a larger main lobe viewing angle without dead areas, achieved by dividing each pixel island into multiple small pixel islands with different focal length cylindrical lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If more viewpoints are increased in super multi-view 3D display, then the stereoscopic visual effect is improved, but the resolution loss increases
Solution Approach 1:
The pixel array is divided into multiple sub-pixel arrays, with each sub-pixel array corresponding to a specific viewpoint. This segmentation allows multiple viewpoints to be displayed simultaneously while maintaining sufficient resolution for each individual viewpoint, as the total pixel count is distributed across multiple view directions rather than being diluted across too many viewpoints.
2Area of moving object
If a large viewing angle is achieved by splicing main lobe and side lobe, then the viewing angle is increased, but dead areas appear between the main lobe and side lobe
Solution Approach 1:
Different regions of the display panel are designed with different optical properties. The center region uses a first cylindrical lens array optimized for the main lobe, while the edge regions use second cylindrical lens arrays optimized for side lobes. This local differentiation allows the main lobe and side lobe to be seamlessly spliced without dead areas, as each region's optical characteristics are optimized for its specific function.
3Area of stationary object
If a large-size screen is applied, then the display area is increased, but light in large viewing angle at edge is more affected by lens aberration causing greater optical crosstalk
Solution Approach 1:
The large-size display panel is segmented into multiple sub-pixel arrays, with each sub-pixel array having its own dedicated cylindrical lens array. This segmentation isolates the optical paths for different viewing angles, preventing light from edge regions with large viewing angles from interfering with other viewpoints. Each sub-pixel array acts as an independent optical unit, eliminating the crosstalk that would otherwise occur in a monolithic large-screen design.
4Device complexity
If cylindrical lens array with limited light-condensing capacity is used, then the structure is simple, but light in large viewing angle cannot be collimated causing optical crosstalk
Solution Approach 1:
The lens array is designed with local quality differentiation, where the center region uses a first cylindrical lens array with specific optical parameters optimized for main lobe collimation, while the edge regions use second cylindrical lens arrays with different parameters optimized for side lobe collimation. This local optimization allows each region to achieve effective light collimation for its specific viewing angle range, overcoming the limitations of a uniform lens array 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 design increases the viewing angle by 35°, reduces optical crosstalk between adjacent viewpoints to ≤10%, and enables continuous stereoscopic image viewing without dead areas, suitable for multi-person viewing.
Implementation Method 1
a focal length of the first cylindrical lens is smaller than a focal length of the second cylindrical lens, the first cylindrical lens is arranged near a center of the first small pixel island along the first direction, the two small pixel groups in the first small pixel island form a first visual area through the first cylindrical lens
Data Source
AI summary
The present disclosure provides a display panel and a display apparatus. The display panel includes sub-pixel islands, the sub-pixel island includes a first small pixel island and a second small pixel island arranged along a first direction, and each of the small pixel islands includes at least two small pixel groups. The display panel further includes a first cylindrical lens and a second cylindrical lens arranged along the first direction. A distance between two small pixel groups in the first small pixel island is smaller than a distance between two small pixel groups in the second small pixel island, a radius of curvature of the first cylindrical lens is smaller than a radius of curvature of the second cylindrical lens, the first cylindrical lens and the second cylindrical lens are located at centers of the first small pixel island and the second small pixel island along the first direction respectively.