Ultra-Short-Throw Projection on Flexible Transparent Substrates
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Solution Overview
Problem
Existing transparent and flexible display technologies face challenges in commercialization due to the difficulty in finding suitable materials and the complexity of process technology required to manufacture displays that are both transparent and flexible.
Innovation Solution
A compact transparent flexible display device is implemented using an ultra-short-throw projection unit mounted on a flexible, transparent or opaque substrate, eliminating the need for individual driving components at each pixel and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing flat panel display technologies (OLED, LCD, etc.) are used to manufacture transparent or flexible displays, then display image quality can be maintained, but the manufacturing process becomes extremely complex and requires specialized transparent or flexible materials for all components including TFTs, switches, electrical wiring, color filters, and black matrix
Solution Approach 1:
The patent extracts and removes the complex pixel-level driving components (TFTs, switches, electrical wiring, color filters, black matrix) from the display structure. By using projection technology, these components are eliminated entirely, leaving only the projection unit and a simple substrate, thereby dramatically simplifying the manufacturing process and material requirements.
Solution Approach 2:
The patent replaces the mechanical/electrical pixel-driving system with an optical projection system. Instead of using electrical components to control each pixel, the invention uses a projection unit that optically generates and projects images onto the display surface, substituting complex electrical mechanisms with a more straightforward optical approach.
2Adaptability or versatility
If transparent or flexible materials are used for all display components including active materials and driving components, then transparency and flexibility can be achieved, but suitable materials are extremely difficult to find and commercialization becomes very difficult
Solution Approach 1:
The patent extracts the requirement for transparent or flexible materials from all components by removing the pixel-level driving components entirely. This eliminates the need to find specialized transparent TFTs, flexible switches, and other difficult-to-source materials, as these components are replaced by a projection unit that can be mounted on a simple substrate without such material constraints.
3Manufacturing precision
If individual driving components are arranged for each pixel of the panel, then precise pixel control can be achieved, but the display device becomes heavy and the manufacturing process becomes complex
Solution Approach 1:
The patent replaces the physical pixel-level driving components with an optical projection system. The projection unit generates images and projects them onto the display surface, eliminating the need for heavy electrical components at each pixel location while maintaining precise image control through optical means.
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 a display that can be easily folded, bent, or rolled, providing improved transparency and flexibility, while also simplifying the manufacturing process, reducing weight, and lowering costs compared to traditional flexible transparent displays.
Implementation Method 1
a reflective surface provided on at least a portion of one surface of the base plate to form a virtual image by reflecting projection light output from the projection unit
Data Source
AI summary
The present invention relates to a compact mobile display device, and more specifically, to a portable display implemented by mounting an ultra-short-throw projection optical module on a transparent, flexible, or hard substrate to project a projection image. In the present invention, when the ultra-short-throw projection optical module is mounted and the substrate that projects the image is made of a flexible and transparent material that can be bent, folded, or rolled, the user can enjoy augmented reality that overlaps reality through a transparent display. In addition to viewing images, it is possible to conveniently carry the display device by bending, folding, or rolling it while viewing the expanded display.