Synthetic Quartz Microstructure Transfer Substrate for Stable Mark Reading
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Solution Overview
Problem
Substrates for transferring microstructures, such as micro LEDs, face issues with engraved marks on the back surface getting soiled or scratched, leading to reading errors due to contact with raised parts, which hinders stable and continuous recognition.
Innovation Solution
A synthetic quartz glass substrate with an engraved mark on the front surface and a silicone pressure-sensitive adhesive layer, characterized by specific surface properties and laser-engraved marks, minimizes soiling and scratching, ensuring stable mark recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the back surface of the substrate is engraved, then the engraved mark can be provided for identification, but the back surface is apt to be soiled or scratched due to contact with raised parts, making it impossible to continuously and stably read the engraved mark
Solution Approach 1:
The patent inverts the conventional approach by engraving the identification mark on the front surface of the substrate instead of the back surface. This reversal prevents the engraved mark from contacting raised parts during handling and transfer processes, thereby eliminating soiling and scratching that would otherwise occur on the back surface, ensuring continuous and stable readability of the mark throughout production and usage.
2Ease of manufacture
If a resin is bonded or coated after engraving, then the substrate can be processed further, but the back surface contact with raised parts causes soiling that prevents stable reading
Solution Approach 1:
The patent reverses the conventional sequence and location by placing the engraved mark on the front surface before resin bonding or coating operations. This inversion ensures that the identification mark remains on a clean, non-contacting surface throughout subsequent manufacturing processes, maintaining both ease of manufacture and reliable mark readability simultaneously.
3Loss of information
If the substrate flows through a production line with engraved marks, then quality management is enabled, but the marks become unreadable due to soiling from contact with raised parts
Solution Approach 1:
The patent inverts the conventional practice of back-surface engraving by placing identification marks on the front surface of the substrate. This reversal protects the marks from contact with raised parts during production line handling and transfer operations, preventing soiling that would otherwise cause information loss and reading failures, thereby ensuring continuous quality management capability throughout the production process.
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 prevents stains and scratches on the engraved mark, allowing stable and continuous reading, even after repeated transfers, by using a synthetic quartz glass substrate with a silicone pressure-sensitive adhesive layer and optimized surface properties.
Implementation Method 1
it is common to directly engrave characters and numbers in the substrate using a laser
Implementation Method 2
a silicone pressure-sensitive adhesive agent layer provided thereon
Data Source
AI summary
Provided is a substrate for transferring microstructures such as a micro LED including an engraved mark. The substrate for transferring microstructures is less likely to cause a recognizing error of the engraved mark to occur in a reading device, and makes it possible to stably and continuously read the engraved mark.A substrate for transferring microstructures includes a synthetic quartz glass substrate and a silicone pressure-sensitive adhesive agent layer provided on a front surface of the synthetic quartz glass substrate. The substrate includes an engraved mark provided in the from surface.