16 February 2017 Miniaturized LEDs for flat-panel displays
Author Affiliations +
Inorganic light emitting diodes (LEDs) serve as bright pixel-level emitters in displays, from indoor/outdoor video walls with pixel sizes ranging from one to thirty millimeters to micro displays with more than one thousand pixels per inch. Pixel sizes that fall between those ranges, roughly 50 to 500 microns, are some of the most commercially significant ones, including flat panel displays used in smart phones, tablets, and televisions. Flat panel displays that use inorganic LEDs as pixel level emitters (μILED displays) can offer levels of brightness, transparency, and functionality that are difficult to achieve with other flat panel technologies. Cost-effective production of μILED displays requires techniques for precisely arranging sparse arrays of extremely miniaturized devices on a panel substrate, such as transfer printing with an elastomer stamp. Here we present lab-scale demonstrations of transfer printed μILED displays and the processes used to make them. Demonstrations include passive matrix μILED displays that use conventional off-the shelf drive ASICs and active matrix μILED displays that use miniaturized pixel-level control circuits from CMOS wafers. We present a discussion of key considerations in the design and fabrication of highly miniaturized emitters for μILED displays.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Erich J. Radauscher, Erich J. Radauscher, Matthew Meitl, Matthew Meitl, Carl Prevatte, Carl Prevatte, Salvatore Bonafede, Salvatore Bonafede, Robert Rotzoll, Robert Rotzoll, David Gomez, David Gomez, Tanya Moore, Tanya Moore, Brook Raymond, Brook Raymond, Ronald Cok, Ronald Cok, Alin Fecioru, Alin Fecioru, António Jose Trindade, António Jose Trindade, Brent Fisher, Brent Fisher, Scott Goodwin, Scott Goodwin, Paul Hines, Paul Hines, George Melnik, George Melnik, Sam Barnhill, Sam Barnhill, Christopher A. Bower, Christopher A. Bower, } "Miniaturized LEDs for flat-panel displays", Proc. SPIE 10124, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI, 1012418 (16 February 2017); doi: 10.1117/12.2252857; https://doi.org/10.1117/12.2252857

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