(19)
(11) EP 3 133 425 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
12.04.2017 Bulletin 2017/15

(43) Date of publication:
22.02.2017 Bulletin 2017/08

(21) Application number: 15779658.2

(22) Date of filing: 15.04.2015
(51) International Patent Classification (IPC): 
G02B 5/30(2006.01)
C08J 5/18(2006.01)
G02F 1/13363(2006.01)
H05B 33/02(2006.01)
 C08G 63/64(2006.01)
G02F 1/1335(2006.01)
H01L 51/50(2006.01)
(86) International application number:
PCT/JP2015/061642
(87) International publication number:
WO 2015/159928 (22.10.2015 Gazette 2015/42)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA

(30) Priority: 16.04.2014 JP 2014084695

(71) Applicants:
  • NITTO DENKO CORPORATION
    Ibaraki-shi, Osaka 567-8680 (JP)
  • MITSUBISHI CHEMICAL CORPORATION
    Tokyo 100-8251 (JP)

(72) Inventors:
  • NAMIKI Shingo
    Kitakyushu-shi, Fukuoka 806-0004 (JP)
  • HIRAMI Yuuichi
    Kitakyushu-shi, Fukuoka 806-0004 (JP)
  • UEHARA Hisatoshi
    Yokohama-shi, Kanagawa 227-8502 (JP)
  • HAYASHI Hiroyuki
    Yokohama-shi, Kanagawa 227-8502 (JP)
  • SHIMIZU Takashi
    Ibaraki-shi, Osaka 567-8680 (JP)
  • SUMIMURA Hiroshi
    Ibaraki-shi, Osaka 567-8680 (JP)
  • MURAKAMI Nao
    Ibaraki-shi, Osaka 567-8680 (JP)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) RETARDATION FILM, CIRCULARLY-POLARIZING PLATE, AND IMAGE-DISPLAYING DEVICE


(57) The retardation film of the present invention contains a resin having positive refractive index anisotropy and containing at least one bonding group of a carbonate bond and an ester bond and one or more structural units selected from the group consisting of a structural unit represented by the general formula (1) and a structural unit represented by the general formula (2), in which the value of wavelength dispersion (R450/R550) as a ratio of retardation R450 at a wavelength of 450 nm to retardation R550 at a wavelength of 550 nm is more than 0.5 and less than 1.0:



(in formula (1) and formula (2), definitions of R1 to R9 are the same as in the description).