Title:
表示装置の製造方法
Document Type and Number:
Japanese Patent JP6503106
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method for support substrate polyimide film used for manufacturing an organic EL device that can be thin, light-weight, and flexible, does not cause cracks and detachment due to thermal stress and is excellent in dimensional stability.SOLUTION: The manufacturing method for display device support substrate polyimide film includes: applying resin solution of polyimide or polyimide precursor on a base substrate so that the polyimide film has a thickness of 50 μm or less; completing heat treatment and forming the polyimide film on the base substrate; and separating the polyimide film from the base substrate. The polyimide film has a transmissivity of 80% or more in a wavelength region of 440 nm to 780 nm and a transmissivity of 80% or less in 400 nm. The display device support substrate polyimide film is manufactured by irradiating a bottom face of the polyimide film with a laser beam through the base substrate to separate the polyimide film from the base substrate.SELECTED DRAWING: None
Inventors:
Masakazu Katayama
Katsufumi Hiraishi
Natsuko Okazaki
Yoshiki Sudo
Wang Hongyuan
Katsufumi Hiraishi
Natsuko Okazaki
Yoshiki Sudo
Wang Hongyuan
Application Number:
JP2018044169A
Publication Date:
April 17, 2019
Filing Date:
March 12, 2018
Export Citation:
Assignee:
Nippon Steel Chemical & Material Co., Ltd.
International Classes:
G09F9/00; B32B27/34; B32B38/10; H01L27/32; H01L51/50; H05B33/10
Domestic Patent References:
| JP2011097007A | ||||
| JP2010155360A | ||||
| JP2008214412A | ||||
| JP2010538103A | ||||
| JP4008734A | ||||
| JP2251564A | ||||
| JP4047933A | ||||
| JP2010100674A | ||||
| JP4328524A | ||||
| JP2007086771A | ||||
| JP2003174153A | ||||
| JP2003280549A | ||||
| JP3246515A | ||||
| JP2004142878A |
Foreign References:
| WO2009107429A1 | ||||
| US5071997 |
Attorney, Agent or Firm:
Kazuya Sasaki
Katsuo Naruse
Eiichi Sano
Katsumi Hara
Shuji Hisamoto
Katsuo Naruse
Eiichi Sano
Katsumi Hara
Shuji Hisamoto