Laser Transfer Printing Device with Gradient Intensity Control
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Solution Overview
Problem
Current laser-driven transfer printing technologies face challenges in achieving high-precision selective transfer printing due to thermal diffusion caused by large-area laser light sources, which affects the transfer of other components.
Innovation Solution
A laser transfer printing device comprising a laser, beam expander, beam splitter, and focusing module that generates and focuses a laser beam to a specific transfer processing position, reducing the irradiation area and thermal diffusion, allowing for precise transfer printing on non-planar substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large-area laser light source is used for transfer printing, then the processing speed and coverage are improved, but thermal diffusion occurs affecting other components and reducing printing precision
Solution Approach 1:
The patent applies local quality by creating a non-uniform laser intensity distribution where the center region has high intensity for effective heating and transfer, while the peripheral regions have gradually decreasing intensity. This gradient distribution ensures that only the target component within the focal region undergoes phase transition and transfer, while surrounding areas remain unaffected, thus eliminating thermal diffusion to other components and achieving high-precision selective transfer printing.
2Quantity of substance
If a large-area laser light source is used, then more components can be processed simultaneously, but thermal diffusion causes unintended transfer of peripheral devices
Solution Approach 1:
The patent changes the parameter of laser intensity distribution from uniform to gradient-based, where the intensity follows a specific spatial distribution pattern with maximum at the center and gradually decreasing toward the edges. This parameter change allows the system to process multiple components simultaneously by adjusting the laser beam size while maintaining precise control over which components undergo transfer, as only components within the high-intensity focal region experience sufficient heating.
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 high-precision selective transfer printing by minimizing thermal diffusion and allowing transfers on non-planar substrates, including side walls and upper/lower surfaces, while reducing impact on peripheral devices.
Implementation Method 1
A laser transfer printing device includes a laser, a beam expander, a beam splitter and a focusing module. The laser is configured to generate a laser beam.
Implementation Method 2
The beam expander is disposed on an optical path of the laser beam generated by the laser to expand the laser beam generated by the laser.
Implementation Method 3
The beam splitter is disposed on an optical path of the laser beam expanded by the beam expander to reflect the expanded laser beam to the focusing module.
Implementation Method 4
The focusing module is disposed on an optical path of the laser beam reflected by the beam splitter to focus the laser beam and project the focused laser beam to a predetermined transfer processing position.
Data Source
AI summary
A laser transfer printing device and a laser transfer printing method are provided. The laser transfer printing device includes a laser, a beam expander, a beam splitter and a focusing module. The laser is configured to generate a laser beam. The beam expander is disposed on an optical path of the laser beam generated by the laser to expand the laser beam generated by the laser. The beam splitter is disposed on an optical path of the laser beam expanded by the beam expander to reflect the expanded laser beam to the focusing module. The focusing module is disposed on an optical path of the laser beam reflected by the beam splitter to focus the laser beam and project the focused laser beam to a predetermined transfer processing position.