发明授权
US06824838B2 Retarders and circular polarizers 有权
减速器和圆偏振器

  • 专利标题: Retarders and circular polarizers
  • 专利标题(中): 减速器和圆偏振器
  • 申请号: US10384749
    申请日: 2003-03-11
  • 公开(公告)号: US06824838B2
    公开(公告)日: 2004-11-30
  • 发明人: Ken KawataHiroshi Takeuchi
  • 申请人: Ken KawataHiroshi Takeuchi
  • 优先权: JP2002-065573 20020311
  • 主分类号: C09K1900
  • IPC分类号: C09K1900
Retarders and circular polarizers
摘要:
A novel retarder comprising a long transparent substrate, and up on the substrate, a first and a second optically anisotropic layers formed from a homogenously aligned rod-like liquid crystal compound and having a phase shift substantially equal to n measured and equal to &pgr;/2 respectively at a wavelength of 550 nm; and a first alignment layer having a rubbing axis defining the azimuthal direction of the homogenous alignment in the first anisotropic layer. The angle between the slow axis of the first anisotropic layer and the longitudinal direction of the transparent substrate is 75°, the angle between the slow axis of the second anisotropic layer and the longitudinal direction is 15°, the angle between the slow axis of the second anisotropic layer and the slow axis of the first anisotropic layer is 60° and the azimuthal direction of the homogenous alignment in the first anisotropic layer is substantially orthogonal to the rubbing axis of the first alignment layer.
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