Micro-droplet deposition by UV-pulsed laser induced forward transfer direct writing technology

Lee, Bong-Gu

doi:10.1007/s13391-012-2059-1

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…Lasers also assist in the stamp transfer process. Saeidpourazar et al 137 introduced a laser-driven microtransfer placement technology based on automatic micro-transfer printing; the laser beam strikes the contact surface between the device and the seal, and the "ink " (commonly Si or GaAs) on the device absorbs the energy and causes a rise in local temperature. Owing to the different thermal-mechanical responses of the seal and ink, their contact surface generates local stress and deformation.…”

Section: Other Laser-based Mass Transfer Technologiesmentioning

confidence: 99%

Applications of lasers: A promising route toward low-cost fabrication of high-efficiency full-color micro-LED displays

Lai,

Liu,

et al. 2023

OES

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Micro-light-emitting diodes (micro-LEDs) with outstanding performance are promising candidates for next-generation displays. To achieve the application of high-resolution displays such as meta-displays, virtual reality, and wearable electronics, the size of LEDs must be reduced to the micro-scale. Thus, traditional technology cannot meet the demand during the processing of micro-LEDs. Recently, lasers with short-duration pulses have attracted attention because of their unique advantages during micro-LED processing such as noncontact processing, adjustable energy and speed of the laser beam, no cutting force acting on the devices, high efficiency, and low cost. Herein, we review the techniques and principles of laser-based technologies for micro-LED displays, including chip dicing, geometry shaping, annealing, laserassisted bonding, laser lift-off, defect detection, laser repair, mass transfer, and optimization of quantum dot color conversion films. Moreover, the future prospects and challenges of laser-based techniques for micro-LED displays are discussed.

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Section: Other Laser-based Mass Transfer Technologiesmentioning

confidence: 99%

Applications of lasers: A promising route toward low-cost fabrication of high-efficiency full-color micro-LED displays

Lai,

Liu,

et al. 2023

OES

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“…Based on laser‐assisted direct ink writing technology, it is possible to build 3D metallic architectures . Particularly, micro‐patterns could be produced in gas phase with the laser‐induced forward transfer (LIFT) process . However, it is hard to apply to actual mass production because of its low process speed.…”

Section: Introductionmentioning

confidence: 99%

3D printed conductive patterns based on laser irradiation

Shin

Park

2017

Physica Status Solidi (a)

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Phone: þ82 2 970 6356, Fax: þ82 2 976 5173In recent years, there has been significant interest in simple and affordable technologies that produce 3D printed embedded electronics and interconnects, in order to increase the functionality of these structures. This study describes the development of 3D printing processes for conductive patterns using 3D printing of metal particle dispersed polymer. This fabrication method is based on 3D molded interconnect device (MID) technology with laser direct structuring. The pattern on 3D printed structure is selectively activated by laser ablation and acquires high conductivity after electroless plating. The method described can be used to directly print a variety of customized and fully-functional product prototypes using a general ME (material extrusion)-type polymer 3D-printer based on laser irradiation.The schematic of the suggested manufacturing method. With proper laser processing, the surface of 3D printed substrate is selectively activated as a seed layer and acquires high conductivity after electroless plating.

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“…As an alternative to this process, metallic 3D microstructures can be fabricated by laser‐assisted direct ink writing technology . Particularly, the laser‐induced forward transfer (LIFT) process can produce micro‐patterns on a substrate in the gas phase . Copper and gold are deposited using LIFT to obtain conductive pillars and lines with high resolution .…”

Section: Introductionmentioning

confidence: 99%

“…[10] Particularly, the laser-induced forward transfer (LIFT) process can produce micro-patterns on a substrate in the gas phase. [11,12] Copper and gold are deposited using LIFT to obtain conductive pillars and lines with high resolution. [13] However, the process speed is relatively low, so it is not suitable for mass production.…”

Section: Introductionmentioning

confidence: 99%

Direct Conductive Patterning on 3D Printed Structure Using Laser

Shin

Park

2017

Physica Status Solidi (a)

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Recently, several investigations have been reported on hybrid technology that embeds circuits on 3D printed models during processing. A new direct fabrication method of conductive patterns on 3D printed structure with laser is suggested for process simplicity. In order to fabricate conductive patterns, a conventional 1064 nm fiber laser is utilized to selectively remove the polymer and connect the copper particles to each other. The fabricated patterns achieve high conductivity with a resistance of 0.15 Ω cm À1 when the length of the pattern is 50 mm. In this study, the surface property changes of the 3D printed structure through laser irradiation are presented and the influences of the laser parameters, including average power, scanning mode (repetition rate), scanning speed, and scan line spacing, on the process efficiency are investigated. Finally, a prototype of an electronic circuit is made and demonstrated for powering up LEDs. The proposed method allows to easily and rapidly fabricate high conductive patterns on complex 3D structures by combining the additive manufacturing technology with laser irradiation.

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Micro-droplet deposition by UV-pulsed laser induced forward transfer direct writing technology

Cited by 7 publications

References 7 publications

Applications of lasers: A promising route toward low-cost fabrication of high-efficiency full-color micro-LED displays

Applications of lasers: A promising route toward low-cost fabrication of high-efficiency full-color micro-LED displays

3D printed conductive patterns based on laser irradiation

Direct Conductive Patterning on 3D Printed Structure Using Laser

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