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author:

Huang, Xinrui (Huang, Xinrui.) [1] | Liu, Qian (Liu, Qian.) [2] | Jiang, Jinkun (Jiang, Jinkun.) [3] | Tang, Xuehuang (Tang, Xuehuang.) [4] | Lin, Xin (Lin, Xin.) [5] | Xie, Yujie (Xie, Yujie.) [6] | Lang, Taifu (Lang, Taifu.) [7] | Huang, Zhonghang (Huang, Zhonghang.) [8] | Yan, Qun (Yan, Qun.) [9] | Lin, Chang (Lin, Chang.) [10] | Sun, Jie (Sun, Jie.) [11]

Indexed by:

EI

Abstract:

Micro light-emitting diode (Micro-LED) is widely regarded as a highly promising technology in the current display field due to its excellent performance, but the core issue hindering the further development of Micro-LED is how to achieve high-precision and high-yield transfer. In this study, laser-induced forward transfer (LIFT) is adopted as the main technique, and a novel blister-type dynamic release layer (DRL) material is selected, characterized by a gentle transfer process and minimal residue on the chip after transfer. Chip-on-wafer (COW) is a structure that fabricates a large number of Micro-LEDs (15 × 30 μm2) on a sapphire substrate. The COW-on-head (COH) chip bonding method can control the uniformity of the overall chip height before transfer within 3.5%, which is favorable for subsequent stable transfer. Based on the analysis of the close relationship between the transfer gap and laser energy density, this study successfully achieved the transfer of red/green/blue (R/G/B) Micro-LED chips (6400, respectively) onto the corresponding chip-on-carrier 2 (COC-2), and all of them have achieved a one-step transfer yield of over 99.3% and an average chip transfer offset of 2 μm or less. It is worth mentioning that the one-step transfer yield mentioned in this paper is different from the yield after testing and repairing the chips. The one-step transfer yield can fully reflect the transfer quality. In order to verify the validity of this study, a 1 in., full-color, active Micro-LED display with a pixel size of 114 pixels per inch (PPI) and a display brightness of 5598 cd/m2 was successfully fabricated. This study proposes an optimized solution for Micro-LED transfer technology, which will help accelerate the mass production and marketization of Micro-LED. © 2025 The Authors. Published by American Chemical Society.

Keyword:

Diffusion in gases Diffusion in liquids Diffusion in solids Fluorescence Luminescence of gases Luminescence of liquids and solutions Luminescence of solids Osmosis Sapphire Thermal diffusion Thermoluminescence

Community:

  • [ 1 ] [Huang, Xinrui]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 2 ] [Huang, Xinrui]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 3 ] [Liu, Qian]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 4 ] [Liu, Qian]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 5 ] [Jiang, Jinkun]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 6 ] [Jiang, Jinkun]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 7 ] [Tang, Xuehuang]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 8 ] [Tang, Xuehuang]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 9 ] [Lin, Xin]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 10 ] [Lin, Xin]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 11 ] [Xie, Yujie]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 12 ] [Xie, Yujie]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 13 ] [Lang, Taifu]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 14 ] [Lang, Taifu]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 15 ] [Huang, Zhonghang]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 16 ] [Yan, Qun]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 17 ] [Yan, Qun]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 18 ] [Yan, Qun]Rich Sense Electronics Technology Co., Ltd., Quanzhou; 362200, China
  • [ 19 ] [Lin, Chang]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 20 ] [Sun, Jie]National and Local United Engineering Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 21 ] [Sun, Jie]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou; 350100, China
  • [ 22 ] [Sun, Jie]Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg; 41296, Sweden

Reprint 's Address:

  • [lin, chang]fujian science & technology innovation laboratory for optoelectronic information of china, fuzhou; 350100, china

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Source :

ACS Applied Materials and Interfaces

ISSN: 1944-8244

Year: 2025

Issue: 19

Volume: 17

Page: 28622-28631

8 . 5 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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