Laser-Phosphor Display Screen Structure for Flatness and Contrast
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Solution Overview
Problem
Existing electronic display systems face challenges in maintaining the flatness and integrity of tiled display panels during shipping and operation, particularly due to the fragility of phosphors used in laser-phosphor displays, which can be damaged and lead to image artifacts.
Innovation Solution
A display system design that includes transparent substrates, adhesive pads, light absorbing materials, and anti-glare layers to support phosphors, preventing direct contact and enhancing contrast, while using gaskets for sealing and vacuum sealing to maintain panel integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If phosphors are placed in direct contact with substrates for structural support, then device complexity is reduced, but phosphors are damaged and reliability deteriorates
Solution Approach 1:
The patent introduces an adhesive layer as an intermediary between the phosphors and the substrate. This adhesive layer provides the necessary mechanical support and bonding while preventing direct contact that would damage the fragile phosphor particles, thus resolving the contradiction between structural support and phosphor protection.
2Manufacturing precision
If phosphors are placed in direct contact with color filter/mirror film for alignment, then manufacturing precision is improved, but light diffusion occurs and image quality deteriorates
Solution Approach 1:
The adhesive layer serves as a mediator that maintains the precise alignment of phosphors with the color filter/mirror film while preventing direct optical contact. This eliminates light diffusion between adjacent phosphors and their corresponding color filter regions, preserving image quality while maintaining manufacturing precision.
3Reliability
If multiple layers are added to protect phosphors, then phosphor protection is improved, but device complexity increases
Solution Approach 1:
The adhesive layer is designed to perform multiple functions simultaneously: it provides mechanical bonding between substrates, protects phosphors from damage, maintains alignment precision, and prevents light diffusion. By consolidating these functions into a single multi-functional layer, the patent achieves phosphor protection without proportionally increasing device complexity.
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 ensures the phosphors are not in direct contact with substrates, reducing damage and improving image quality by preventing light diffusion and enhancing color perception, while maintaining panel flatness and sealing against environmental contaminants.
Implementation Method 1
The plurality of white ink deposits may prevent light diffusion from one phosphor to another phosphor and the plurality of light absorbing material, such as black ink deposits, aids in increasing contrast between the phosphors
Implementation Method 2
The plurality of transparent adhesive pads and the thin anti-glare layer all provide support to the plurality of phosphors
Data Source
AI summary
A display system includes a display screen, where the display screen includes one or more transparent substrates, such as glass, plastic, or the like, a plurality of transparent adhesive pads, a plurality of white ink or adhesive deposits (e.g., a UV cured adhesive), a plurality of light absorbing material, such as black ink deposits, a plurality of gaskets, a color filter/mirror film, and a plurality of phosphors. The display screen may additionally include a thin anti-glare layer. The plurality of transparent adhesive pads and the thin anti-glare layer provide support to the plurality of phosphors, such that the plurality of phosphors are not in direct contact with the one or more transparent substrates and/or the color filter/mirror film. The plurality of white ink deposits may prevent light diffusion from one phosphor to another phosphor and the plurality of light absorbing material, such as black ink deposits, aids in increasing contrast between the phosphors.