Invention Grant
- Patent Title: Color conversion film and multicolor-emitting, organic electroluminescent device comprising the color conversion film
- Patent Title (中): 彩色转换膜和多色发光的有机电致发光器件包括彩色转换膜
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Application No.: US12747882Application Date: 2009-01-21
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Publication No.: US08541777B2Publication Date: 2013-09-24
- Inventor: Toshio Hama , Masaru Nagai , Chong Li , Koji Kawaguchi , Yuko Nakamata , Naoyuki Kanai
- Applicant: Toshio Hama , Masaru Nagai , Chong Li , Koji Kawaguchi , Yuko Nakamata , Naoyuki Kanai
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Rabin & Berdo, P.C.
- International Application: PCT/JP2009/050880 WO 20090121
- International Announcement: WO2010/084587 WO 20100729
- Main IPC: H01L29/08
- IPC: H01L29/08

Abstract:
A color conversion film is disclosed that absorbs light from an organic electroluminescent part emitting blue-green light and converts the light to visible light at a longer wavelength. The color conversion film includes two different dyes. A first dye is a polymer dye with an average molecular weight of 1000 to 1,000,000 that absorbs light incident on the color conversion film and transfers the energy of the light to a second dye. The second dye is a dye that receives the energy from the first dye and emits light. With a multicolor-emitting, organic electroluminescent device including the color conversion film, it is possible to achieve excellent conversion efficiency without increasing the thickness of the color conversion film as in a conventional device using a binder resin.
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