Invention Grant
US08497959B2 Optical film and liquid crystal display 有权
光学薄膜和液晶显示屏

  • Patent Title: Optical film and liquid crystal display
  • Patent Title (中): 光学薄膜和液晶显示屏
  • Application No.: US13121217
    Application Date: 2009-09-18
  • Publication No.: US08497959B2
    Publication Date: 2013-07-30
  • Inventor: Taku Hatano
  • Applicant: Taku Hatano
  • Applicant Address: JP Tokyo
  • Assignee: Zeon Corporation
  • Current Assignee: Zeon Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Birch, Stewart, Kolasch & Birch, LLP
  • Priority: JP2008-250161 20080929
  • International Application: PCT/JP2009/066443 WO 20090918
  • International Announcement: WO2010/035720 WO 20100401
  • Main IPC: G02F1/1335
  • IPC: G02F1/1335
Optical film and liquid crystal display
Abstract:
An optical film includes: a layer A formed of a resin composition P1 containing a resin x1 having a positive intrinsic birefringence value and a resin y1 having a negative intrinsic birefringence value; and a layer B formed of a resin composition P2 containing a resin x2 having a positive intrinsic birefringence value and a resin y2 having a negative intrinsic birefringence value. In the optical film, retardations R450, R550, and R650 at an incident angle of 0° satisfy the relationship of R450
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