Vacuum-Suction Stamp Head Unit for Stable Microstructure Transfer
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Solution Overview
Problem
Conventional microstructure transfer technologies face challenges with complex stamp structures that are difficult to replace, unstable fixing methods leading to positional displacement, and particle adhesion during mass production, which degrade production yield and operating efficiency.
Innovation Solution
A stamp head unit with a silicone-based rubber film on a quartz glass substrate, featuring vacuum suction holes and tubular components for stable fixation, allowing quick replacement and reduced particle adhesion, and a conductive film to prevent electrified particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a composite stamp with support layer, reinforcement layer, and vacuum suction structure is used, then fixing stability is improved, but device complexity increases and replacement time increases
Solution Approach 1:
The invention extracts the essential vacuum suction function from the complex composite stamp structure and implements it directly on the stamp head surface through suction holes, eliminating the need for separate support layers, reinforcement layers, and ring-shaped elastomer structures while maintaining fixing stability
Solution Approach 2:
The invention uses a flexible stamp head with integrated suction holes that can deform to conform to the donor substrate surface, replacing rigid composite structures with a flexible thin-film approach that maintains contact stability without complex reinforcement
2Reliability
If a ring-shaped elastomer vacuum suction structure is used, then fixing stability is improved, but positional displacement occurs due to deformation during repeated pressing motions
Solution Approach 1:
The invention removes the ring-shaped elastomer component that causes deformation and instead integrates vacuum suction holes directly into the stamp head surface, eliminating the source of positional displacement while maintaining vacuum fixation
Solution Approach 2:
The invention replaces the mechanical ring-shaped elastomer structure with a vacuum field-based fixation system using suction holes, eliminating mechanical deformation and associated positioning errors during repeated pressing motions
3Device complexity
If conventional vacuum suction method is used, then stamp fixation is simplified, but vacuum chuck may come off during repeated transfer motions
Solution Approach 1:
The invention merges the vacuum suction function directly into the stamp head structure by integrating suction holes into the stamp head surface, creating a unified structure where the stamp head itself serves as the vacuum chuck, eliminating separation and improving reliability
Solution Approach 2:
The flexible stamp head with integrated suction holes can deform to maintain consistent vacuum contact during repeated pressing motions, preventing detachment while maintaining structural simplicity
4Productivity
If particles adhere to the stamp during mass production, then production yield degrades, but no effective countermeasure is provided
Solution Approach 1:
The invention replaces mechanical contact-based particle generation with a vacuum field-based transfer system, reducing particle generation and adhesion during the transfer process
Solution Approach 2:
The vacuum suction system creates a controlled environment that reduces particle generation and adhesion by minimizing mechanical friction and contact between the stamp and substrates during repeated transfer motions
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 high-precision, high-throughput microstructure transfer with reduced downtime and particle adhesion, facilitating the production of microstructure-integrated products like micro-LED displays.
Implementation Method 1
a stamp-component-holding component (1) comprising a surface having a hole (2) for vacuum suction of a surface of the quartz glass substrate (6)
Implementation Method 2
a conductive film to prevent electrified particles
Data Source
AI summary
The present invention is a stamp head unit including: a stamp component including at least a silicone-based rubber film on a quartz glass substrate; a stamp-component-holding component including a surface having a hole for vacuum suction of a surface of the quartz glass substrate of the stamp component; and a tubular component having an evacuation suction hole connected to communicate with the hole for vacuum suction so as to maintain a vacuum, and being coupled and fixed with the stamp-component-holding component. This provides: a stamp component that can be fixed stably by a simple and convenient vacuum chuck system; a stamp head unit with which the stamp component can be replaced in a short time; and a microstructure-transfer apparatus provided with the stamp component and the stamp head unit.