公开(公告)号：US06512560B2

公开(公告)日：2003-01-28

申请号：US09860554

申请日：2001-05-21

申请人： Toshiya Ohtake ,  Yuzo Hisatake

发明人： Toshiya Ohtake ,  Yuzo Hisatake

IPC分类号： G02F11335

CPC分类号： G02F1/133555 ,  G02F1/133536 ,  G02F1/1393 ,  G02F2001/133638 ,  G02F2201/343

摘要： The liquid crystal display element includes a polarization plate, a liquid crystal layer provided in the rear of the polarization plate, for modulating incident light in correspondence with an applied voltage, a selectively reflective layer provided behind the liquid crystal layer, for reflecting a first circular polarization component of incident light, and a back light source arranged in the rear of the selectively reflective layer, for emitting light having intensity peaks for a plurality of predetermined wavelengths. The selectively reflective layer has first reflection factors to the first polarization components of incident light falling within first small regions of visible light, including the plurality of predetermined wavelengths, and has second reflection factors to the first polarization components of incident light falling within second small regions of visible light, not including the plurality of predetermined wavelengths. The first reflection factors are smaller than the second reflection factors.

摘要翻译： 液晶显示元件包括偏光板，设置在偏振板后部的液晶层，用于调制与施加电压相对应的入射光;设置在液晶层后面的选择性反射层，用于反射第一圆形 入射光的偏振分量和布置在选择反射层的后面的背光源，用于发射具有多个预定波长的强度峰值的光。 选择反射层具有入射光的第一偏振分量的第一反射因子，该入射光落入包括多个预定波长的可见光的第一小区域内，并且具有落入第二小区域内的入射光的第一偏振分量的第二反射因子 的可见光，不包括多个预定波长。 第一反射因子小于第二反射因子。

公开(公告)号：US06825903B2

公开(公告)日：2004-11-30

申请号：US09840126

申请日：2001-04-24

申请人： Toshiya Ohtake ,  Yuzo Hisatake ,  Atsuko Oono

发明人： Toshiya Ohtake ,  Yuzo Hisatake ,  Atsuko Oono

IPC分类号： G02F11335

CPC分类号： G02F1/133553 ,  G02F1/13363 ,  G02F2201/343

摘要： A liquid crystal display element comprises a polarization plates, phase difference plates, a liquid crystal layer, and selectively reflective layers for reflecting part or whole of circularly polarized light in a specific direction. The products of the respective thicknesses of the polarization plate, phase difference plate, liquid crystal layer, and selectively reflective layer and the difference between an average refractive index in a direction perpendicular to each display plane and an average refractive index in a direction parallel to the display plane are set so that the absolute value of their sum total is 50 nm or less. Each selectively reflective layer is formed of a layer having positive refractive index anisotropy and a layer having negative refractive index anisotropy.

摘要翻译： 液晶显示元件包括偏光板，相位差板，液晶层和用于反射特定方向的圆偏振光的部分或全部的选择性反射层。 偏振板，相位差板，液晶层和选择反射层的各自厚度的乘积以及垂直于每个显示平面的方向上的平均折射率与平行于该显示平面的方向上的平均折射率之间的差 设置显示面，使得它们的总和的绝对值为50nm以下。 每个选择性反射层由具有正折射率各向异性的层和具有负折射率各向异性的层形成。

公开(公告)号：US06747715B2

公开(公告)日：2004-06-08

申请号：US09987477

申请日：2001-11-14

申请人： Toshiya Ohtake ,  Yuzo Hisatake

发明人： Toshiya Ohtake ,  Yuzo Hisatake

IPC分类号： G02F11335

CPC分类号： G02F1/13362 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/133555 ,  G02F2001/133543 ,  G02F2001/133565

摘要： A polarized light reflecting element includes a plurality of stacked cholesteric liquid crystal layers. Each cholesteric liquid crystal layer is polymerized and has a helical liquid crystal molecule array and a helical axis that extends substantially in the normal direction. The in-plane mean value &agr; of the respective helix angles of liquid crystal molecules is nearly n&pgr; (n=1, 2, 3, . . . ). The cholesteric liquid crystal layers have their liquid crystal molecules continuously oriented on the interfaces between them, and form one smooth helical structure as a whole.

摘要翻译： 偏振光反射元件包括多个层叠的胆甾型液晶层。 每个胆甾型液晶层被聚合并且具有螺旋液晶分子阵列和基本上沿法线方向延伸的螺旋轴。 液晶分子各螺旋角的面内平均值α近似为npi（n = 1,2,3，...）。 胆甾型液晶层的液晶分子在它们之间的界面上连续取向，整体形成一个平滑的螺旋结构。