Cover Window Layer Structure for Hidden QR Code Identification
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Solution Overview
Problem
Existing display devices face challenges in allowing easy identification of QR codes or alignment marks during fabrication while preventing them from being visible to users after completion.
Innovation Solution
A display device design featuring a cover window with a flat and curved portion, a printed layer, a buffer layer, and a code printed layer with grooves, enabling QR code visibility during fabrication and concealment post-fabrication through a layered structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a QR code is printed on the cover window for identification during fabrication, then the QR code can be easily identified during manufacturing, but the QR code becomes visible to users after the display device is completed
Solution Approach 1:
The cover window is divided into a flat portion and a curved portion. The QR code is printed on the flat portion, while the curved portion is positioned between the QR code and the user's view direction. This segmentation allows the QR code to be accessible during fabrication while being hidden from users during normal use.
Solution Approach 2:
The solution moves the hiding mechanism from the traditional approach of covering the QR code with a separate layer to utilizing the third dimension - the curved surface of the cover window. The curved portion acts as a physical barrier that blocks the line of sight to the QR code, leveraging spatial dimensionality to achieve both visibility during manufacturing and concealment during use.
2Loss of information
If a printed layer with QR code is applied on the cover window, then the QR code is visible for manufacturing purposes, but it compromises the aesthetic integrity and privacy of the finished product
Solution Approach 1:
The cover window surface is segmented into functional zones: the flat portion for QR code placement and the curved portion for aesthetic presentation and obscuration. This segmentation allows each zone to serve its specific purpose without compromising the other.
Solution Approach 2:
The curved portion of the cover window acts as an intermediary element between the QR code and the user's view. It physically blocks the line of sight to the QR code while maintaining the overall aesthetic appearance of the cover window, thus mediating between manufacturing requirements and aesthetic concerns.
3Ease of operation
If the QR code is placed on the flat portion only, then it is easily accessible during fabrication, but it may be visible from certain angles after completion
Solution Approach 1:
The cover window is segmented into flat and curved portions, with the QR code positioned on the flat portion. The curved portion is strategically positioned to block external viewing angles, creating multiple functional zones that work together to achieve both accessibility and concealment.
Solution Approach 2:
The asymmetric configuration of the flat and curved portions creates a specific geometric relationship where the curved portion naturally blocks line-of-sight access to the QR code from external angles. This asymmetric design leverages the different orientations and curvatures to achieve selective visibility.
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
Facilitates easy identification of QR codes during manufacturing without making them visible to users, ensuring privacy and aesthetic integrity of the display device.
Implementation Method 1
laser etching the code printed layer
Data Source
AI summary
A display device includes a cover window comprising a flat portion and a curved portion connected to the flat portion; a printed layer disposed across the flat portion and the curved portion of the cover window; a buffer layer provided on the printed layer; a code printed layer provided on the buffer layer; and a plurality of grooves penetrating through the code printed layer.