The following papers appear in the April 2011 (Vol. 19/4) issue of JSID. 
For a preview of the papers go to sid.org/jsid.html.

Letters

Projection Displays and Systems

311–312
Scaling rules for pico-projector laser safety
Edward Buckley, Jackson, WY USA

Special Issue on Advances in OLED Displays Organic Light-Emitting Diodes and Displays (OLEDs)

313–315
Introduction

316–322
An OTFT-driven rollable OLED display
Makoto Noda, Norihito Kobayashi, Mao Katsuhara, Akira Yumoto, Shinichi Ushikura, Ryouichi Yasuda, Nobukazu Hirai, Gen Yukawa, Iwao Yagi, Kazumasa Nomoto, and Tetsuo Urabe, Sony Corp., Japan

323–328
Active-matrix organic light-emitting-diode displays with indium gallium zinc oxide thin-film transistors and normal, inverted, and transparent organic light-emitting diodes
Hsing-Hung Hsieh, Tsung-Ting Tsai, Chin-Yu Chang, Shih-Feng Hsu, Ching-Sang Chuang, and Yusin Lin, AU Optronics Corp., Taiwan

329–334
High-speed pixel circuits for large-sized 3-D AMOLED displays
Dong-Wook Park, Chul-Kyu Kang, Yong-Sung Park, Bo-Yong Chung, Kyung-Hoon Chung, Keumnam Kim, Byung-Hee Kim, and Sang-Soo Kim, Samsung Mobile Display Co., Korea

335–341
AMOLED displays with transfer-printed integrated circuits
Ronald S. Cok and John W. Hamer, formerly Eastman Kodak Co., USA; Christopher A. Bower, Etienne Menard, and Salvatore Bonafede, Semprius, Inc., USA

342–345
Solution-processable double-layered ionic p-i-n organic light-emitting diodes
Byoungchoo Park, Yoon Ho Huh, Sang Woo Lee, Woo Tack Han, Yung Jin Park, and In Tae Kim, Kwangwoon University; Jongwoon Park, Korea Institute of Industrial Technology, Korea

346–352
Efficiency enhancement of solution-processed single-layer blue-phosphorescence organic light-emitting devices having co-host materials of polymer (PVK) and small-molecule (SimCP2)
Shun-Wei Liu, Shi-Jay Yeh, Min-Fei Wu, and Chin-Ti Chen, Institute of Chemistry, Academia Sinica, Taiwan, ROC; Chih-Hsien Yuan and Chih-Chien Lee, National Taiwan University of Science and Technology, Taiwan, ROC

353–359
Hole-rich host materials for blue-phosphorescent OLEDs
Lelia Cosimbescu, Evgueni Polikarpov, James S. Swensen, Jens T. Darsell, and Asanga B. Padmaperuma, Northwest National Laboratory, Richland, VA USA

360–367
Electrical characterization and modelling of top-emitting PIN-OLEDs
Gerard Cummins, Ian Underwood, and Anthony Walton, University of Edinburgh, Scotland, UK