Optical Cores and Separation Element for Curved Display Pixel Precision
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Solution Overview
Problem
Curved and flexible displays face challenges in defining pixels precisely due to light mixing between adjacent pixels, leading to reduced optical quality of images.
Innovation Solution
A display design featuring optoelectronic boards with planar light sources and cylindrical optical cores made of transparent plastic, supported by a monolithic structure, where each optical core is optically coupled to a light source and directed onto a concave-convex screen, with an optical separation element preventing light coupling between cores and ambient light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curved display screen is used, then the display can be flexible and compact, but the optical quality of images is reduced due to light mixing between adjacent pixels
Solution Approach 1:
The display screen is divided into multiple independent waveguide layers, each waveguide layer being optically isolated from the others. This segmentation prevents light from adjacent pixels in different waveguide layers from mixing, thereby maintaining pixel definition precision while allowing the overall display to be curved or flexible.
Solution Approach 2:
An optical separation element is introduced between adjacent waveguide layers to act as an intermediary that blocks light from passing between layers. This mediator prevents harmful light mixing while allowing the curved display structure to function, resolving the contradiction between flexibility and pixel precision.
2Manufacturing precision
If traditional flat display structures are used, then pixel definition is clear, but the display lacks flexibility and compactness
Solution Approach 1:
By segmenting the display into multiple thin waveguide layers stacked together, each layer maintains clear pixel definition through optical isolation, while the stacked structure as a whole can be bent or curved, providing flexibility that a single flat structure cannot achieve.
Solution Approach 2:
The display structure transitions from a two-dimensional flat arrangement to a three-dimensional stacked configuration of multiple waveguide layers. This dimensional change allows the display to maintain pixel precision in the plane while gaining flexibility through the thickness dimension, enabling curved and flexible form factors.
3Adaptability or versatility
If multiple waveguide layers are stacked to create curved display, then flexibility is achieved, but light from adjacent pixels mixes between layers
Solution Approach 1:
An optical separation element is placed between adjacent waveguide layers to block light from passing between them. This intermediary prevents the harmful light mixing effect while allowing the multiple layers to be stacked in a curved configuration, thus maintaining display flexibility without the negative effect of light contamination.
Solution Approach 2:
The harmful light mixing effect is extracted or removed from the system by introducing optical separation elements that selectively block inter-layer light transmission. This allows the beneficial curved flexible structure to be maintained while eliminating the specific harmful effect of light mixing between adjacent pixel layers.
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
Enables precise pixel definition and luminous dot shaping without lenses, maintaining image sharpness and reducing light mixing, even on curved screens, while being cost-effective and compact.
Implementation Method 1
Each guide module (6) includes a plurality of respective optical elements (10) apt to host the guided propagation of visible light
Implementation Method 2
an optical separation element preventing light coupling between cores and ambient light
Data Source
AI summary
A display including: a plurality of light sources that emit light beams; a plurality of optical cores having an elongated shape, each optical core having a respective first end, which is optically coupled to a corresponding light source, each optical core further being such that the light beam emitted from the corresponding light source propagates in a guided manner inside the optical core; and a screen, each optical core having a respective second end, which is optically coupled to the screen. The display further includes an optical separation element, which forms a plurality of cavities that house corresponding optical cores, each cavity and the corresponding optical core forming a corresponding waveguide. The optical separation element absorbs visible light and laterally surrounds at least the first end of each optical core.