Title:
λ／４位相差フィルム及び有機エレクトロルミネッセンス画像表示装置
Document Type and Number:
Japanese Patent JP5601433
Kind Code:
B2
Abstract:
The present invention addresses the problem of providing: a lambda/4 phase-shifted film with a broad zone in which phase differences are reduced in the thickness direction has a high capacity for expressing phase differences, and is provided with inverse wavelength dispersion characteristics in a thin film; and an organic electroluminescent image display device equipped with said lambda/4 phase-shifted film, having excellent image display performance. This lambda/4 phase-shifted film is characterized in that the phase difference (Rt) (550) in the thickness direction at a wavelength of 550 nm is 150 nm or less, as measured in an environment at 23°C and a relative humidity of 55%. The lambda/4 phase-shifted film is further characterized in that: the wavelength dispersion characteristics of an in-plane phase difference (Ro) is within the ranges of 0.72 <= Ro(450)/Ro(550) <= 0.96 and 0.83 <= Ro(550)/Ro(650) <= 0.98 as a first condition; the in-plane refractive index is 1.000 <= ny(280)/nx(280) <= 3.500 as a second condition; and 1.05 <= Deltany(400)/Deltanx(400) <= 2.15 as a third condition.
Inventors:
れん Michihide child
Yukito Nakazawa
Norie Tanihara
Kenji Mishima
Kogure 翠
Koji Tashiro
Yukito Nakazawa
Norie Tanihara
Kenji Mishima
Kogure 翠
Koji Tashiro
Application Number:
JP2014504806A
Publication Date:
October 08, 2014
Filing Date:
March 05, 2013
Export Citation:
Assignee:
Konica Minolta Co., Ltd.
International Classes:
G02B5/30; G02F1/13363; H01L51/50; H05B33/02
Domestic Patent References:
| JP2008530584A | 2008-08-07 | |||
| JP2011519060A | 2011-06-30 | |||
| JP2000137116A | 2000-05-16 | |||
| JP2010151910A | 2010-07-08 |
Attorney, Agent or Firm:
Patent business corporation Mitsuaki international patent firm