Curved Display Panel Optics for Field Curvature Correction
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Solution Overview
Problem
Conventional display apparatuses suffer from uneven brightness and reduced display efficiency due to varying brightness levels at different viewing angles and field curvature, leading to unclear imaging at light emission points.
Innovation Solution
A display apparatus with a curved light exiting surface and an imaging assembly comprising an imaging lens group, quarter wave plates, and polarization beam splitters, where the optical axis of the imaging lens group aligns with the central axis of the display panel, enhancing uniformity and correcting field curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a flat display panel is used with conventional imaging assembly, then the structure is simple and easy to manufacture, but the brightness is uneven at different viewing angles and field curvature causes unclear imaging at light emission points
Solution Approach 1:
The display panel uses a curved light exiting surface instead of a flat surface. The curvature radius is specifically designed to match the focal length of the imaging lens group, which corrects field curvature and enables clear imaging at all light emission points across the panel while maintaining uniform brightness distribution.
2Manufacturing precision
If the light exiting surface is curved to correct field curvature, then imaging clarity is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent specifies a particular curvature radius for the light exiting surface that corresponds to the focal length of the imaging lens group. This parameter optimization allows the curved surface to correct optical aberrations while maintaining manufacturability through standard curved display panel fabrication techniques.
3Productivity
If the main light angle is 0° perpendicular to the panel, then the display structure is simple, but brightness attenuation occurs at wide viewing angles reducing display efficiency
Solution Approach 1:
The curved light exiting surface redirects light emission angles across the panel. By matching the curvature radius to the imaging lens focal length, light from different positions on the panel is directed at appropriate angles to maintain uniform brightness distribution and eliminate viewing angle-dependent brightness attenuation.
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
Improves image clarity and brightness uniformity across different viewing angles by ensuring main light emission is perpendicular to the display panel, correcting field curvature, and enhancing light efficiency.
Implementation Method 1
the light exiting surface of the display panel is a curved surface, main light emitted by the display panel is perpendicular to the light exiting surface of the display panel
Implementation Method 2
the imaging assembly comprises an imaging lens group comprising at least one imaging lens, the imaging lens group is disposed on a light emitting side of the display panel
Implementation Method 3
the imaging assembly comprises a first quarter wave plate, a beam splitter, a second quarter wave plate, and a polarization beam splitter arranged sequentially from the display panel on the light emitting side of the display panel
Data Source
AI summary
The present application provides a display apparatus. The display apparatus includes an imaging assembly and a display panel. The imaging assembly is disposed on a light emitting side of the display panel. Disposing the light exiting surface of the display panel as a curved surface makes main light emitted from the display panel perpendicular to the display panel such that not only uniformity and light efficiency of image display brightness can be improved but also field curvature of the display apparatus can be corrected to make light emitting points of the display panel in different places able to clearly image images.