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[13-1]
14:00 ~ 14:25
Title:[Invited] A Conformable Active Matrix LED Display
Ashutosh K. Tripathi, Edsger C. P. Smits, Jan-Laurens van der Steen (Holst Centre, Netherlands), Maarten Cauwe, Rik Verplancke, Kris Myny (IMEC, Belgium), Joris Maas, Roel Kuster, Sami Sabik (Holst Centre, Netherlands), Mitsuhiro Murata, Yoshihiro Tomita, Hideki Ohmae (Panasonic Corp., Japan), Jeroen van den Brand, and Gerwin Gelinck (Holst Centre, Netherlands)
Abstract: Conformable and stretchable displays can be integrated on complex surfaces. Such a display can assume the shape of a conformed surface by simultaneous multi-dimensional stretching and bending. Such technology provides new opportunities in the field of display applications, for example wearable displays integrated or embedded in a textile or onto complex surfaces in automotive interiors. In this work we present a conformable active matrix display using LEDs mounted on an amorphous Indium-Gallium-Zinc Oxide (a-IGZO) TFT backplane. A two-transistor and one capacitor (2T-1C) pixel engine based backplane, fabricated on polyimide substrate, is used to drive LEDs. Rigid LED pixels are connected via meandered copper film. The meander interconnections have been optimized with respect to their electrical and mechanical properties to provide a display with a 2 mm pitch between the pixels and good conformability. At an operating supply voltage of 7 V, the average brightness of the display exceeds 170 cd/m2.
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