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Featured researches published by Osamu Onitsuka.


Synthetic Metals | 1997

Passive matrix display of organic LEDs

Michio Arai; Kenji Nakaya; Osamu Onitsuka; Tetsushi Inoue; Mitsufumi Codama; Masaru Tanaka; Hiroshi Tanabe

Abstract The lifetime and luminous efficiency of a double-emitting-layer cell have been improved by optimizing materials and cell configuration. The lifetime is estimated at over 50 000 h from 300 cd m −2 . A passive matrix display based on a double-emitting-layer cell with a pixel number of 256 × 64, a pixel size of 0.30 mm × 0.30 mm and a luminance of 100 cd m −2 provides long lifetime and three stable colors, green, yellow and red.


Archive | 1998

Organic electroluminescent display device, and method and system for making the same

Osamu Onitsuka; Akira Ebisawa; Mitsunari Suzuki; Hiroshi Yamamoto; Michio Arai


Archive | 1999

Organic EL display assembly

Akira Ebisawa; Osamu Onitsuka; Hiroyuki Endo; Masayuki Kawashima; Toshio Hayakawa


Archive | 1999

System and process for fabricating an organic electroluminescent display device

Hiroshi Tanabe; Hiroshi Yamamoto; Kengo Fukuyu; Osamu Onitsuka


Archive | 1998

Color conversion material, and organic electroluminescent color display using the same

Osamu Onitsuka; Tetsushi Inoue; Akira Ebisawa; Mutsuko Nakano


Archive | 1997

Organic electroluminescent color display having color transmitting layers and fluorescence converting layer with improved structure for color conversion efficiency on a color transmitting layer

Mitsufumi Codama; Tetsushi Inoue; Kenji Nakaya; Osamu Onitsuka; Michio Arai


Archive | 1998

Organic electroluminescent device and preparation method with ITO electrode (111) orientation

Kenji Nakaya; Yasunaga Kagaya; Mitsufumi Codama; Osamu Onitsuka


Archive | 1998

Organic electroluminescent display with filter layer

Mitsufumi Codama; Osamu Onitsuka


Archive | 1997

Organic EL element and method of producing the same

Michio Arai; Kenji Nakaya; Osamu Onitsuka; Masami Mori


Archive | 1999

Organic electroluminescent device having a conjugated polymer and an inorganic insulative electron injecting and transporting layer

Michio Arai; Osamu Onitsuka

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