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Inorganic light‐emitting diode displays using micro‐transfer printing
Author(s) -
Cok Ronald S.,
Meitl Matthew,
Rotzoll Robert,
Melnik George,
Fecioru Alin,
Trindade Antonio Jose,
Raymond Brook,
Bonafede Salvatore,
Gomez David,
Moore Tanya,
Prevatte Carl,
Radauscher Erich,
Goodwin Scott,
Hines Paul,
Bower Christopher A.
Publication year - 2017
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1002/jsid.610
Subject(s) - transfer printing , light emitting diode , materials science , optoelectronics , microscale chemistry , brightness , monochrome , redundancy (engineering) , diode , optics , nanotechnology , computer science , physics , composite material , mathematics education , mathematics , operating system
Large quantities of microscopic red, green, and blue light‐emitting diodes (LEDs) made of crystalline inorganic semiconductor materials micro‐transfer printed in large quantities onto rigid or flexible substrates form monochrome and color displays having a wide range of sizes and interesting properties. Transfer‐printed micro‐LED displays promise excellent environmental robustness, brightness, spatial resolution, and efficiency. Passive‐matrix and active‐matrix inorganic LED displays were constructed, operated, and their attributes measured. Tests demonstrate that inorganic micro‐LED displays have outstanding color, viewing angle, and transparency. Yield improvement techniques include redundancy, physical repair, and electronic correction. Micro‐transfer printing enables revolutionary manufacturing strategies in which microscale LEDs are first assembled into miniaturized micro‐system “light engines,” and then micro‐transfer printed and interconnected directly to metallized large‐format panels. This paper reviews micro‐transfer printing technology for micro‐LED displays.