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30.2: Flexible OLEDs Poster with Gravure Printing Method
Author(s) -
Nakajima Hiroyoshi,
Morito Shigeru,
Nakajima Hirofumi,
Takeda Toshihiko,
Kadowaki Masaru,
Kuba Kenichi,
Handa Shinichi,
Aoki Daigo
Publication year - 2005
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2036216
Subject(s) - luminescence , inkwell , layer (electronics) , materials science , substrate (aquarium) , optoelectronics , coating , oled , spin coating , screen printing , nanotechnology , composite material , oceanography , geology
Display media for such things as electronic books and electronic paper must be thin, light, resistant to damage, and flexible; and the demand for a flexible, organic EL display is growing. We tried patterning a luminescence layer on a flexible substrate by gravure printing in order to develop a technique of fabricating displays in large quantities and at a low cost, like printed matter. We achieved to form an 80‐nm‐thick layer that exhibited uniform luminescence by optimizing the ink of the luminescent material, and found that the luminescence characteristics were about the same as those of a luminescence layer formed by spin‐coating. Furthermore, the feasibility of making a flexible area‐color organic EL panel by this technique was demonstrated and potential new uses (POPs, luminescent posters, etc.) were discussed.