公开(公告)号：US07324180B2

公开(公告)日：2008-01-29

申请号：US10655582

申请日：2003-09-05

申请人： Keiji Kashima

发明人： Keiji Kashima

IPC分类号： G02F1/1335 ,  G02F1/1337

CPC分类号： G02F1/1323 ,  G02F1/133634 ,  G02F1/1393 ,  G02F2001/133567 ,  G02F2001/133638 ,  G02F2201/38 ,  G02F2413/09 ,  G02F2413/14

摘要： In a liquid crystal display 90, a laminated retardation optical element 10 is placed between a polarizer 102A on the incident side and a liquid crystal cell 104, and a ˜/4 retardation film 102C 10 is placed between a polarizer 102B on the emergent side and the liquid crystal cell 104. The laminated retardation optical element 10 comprises: a ˜/4 retardation layer 14 having the function of bringing, to light that passes through this retardation layer, a 15 phase difference corresponding to a quarter of the wavelength of the light; and a C plate-type retardation layer 16 that acts as a negative C plate. The ˜/4 retardation layer 14 and the C plate-type retardation layer 16 are laminated to a transparent substrate 12 in 20 the order mentioned, and are optically bonded to each other. The I/4 retardation layer 14 comprises as its main component a horizontally-aligned, cross-linked nematic liquid crystal, while the C plate-type retardation layer 16 comprises as its main component a 25 cross-linked chiral nematic liquid crystal (a cross-linked nematic liquid crystal and a cross-linked chiral agent) or cross-linked discotic liquid crystal.

公开(公告)号：US20060139531A1

公开(公告)日：2006-06-29

申请号：US11363062

申请日：2006-02-28

申请人： Keiji Kashima

发明人： Keiji Kashima

IPC分类号： G02F1/1335

CPC分类号： G02F1/13718 ,  G02F1/133504 ,  G02F1/133514

摘要： A wavelength-selecting optical element includes a cholesteric layer that reflects or transmits either of a right-handed circularly polarized light component and a left-handed circularly polarized light component in a selected wavelength band of an incident light; and a diffusing layer disposed on the exit side of the cholesteric layer to diffuse the circularly polarized light component reflected or transmitted by the cholesteric layer. The cholesteric layer may be a color filter having a red, a green and a blue pixel region for each of pixels. Each of the pixel regions reflects or transmits either of a right-handed circularly polarized light component and a left-handed circularly polarized light component in a selected wavelength band of an incident light.

摘要翻译： 波长选择光学元件包括反射或透射入射光的选定波长带中的右旋圆偏振光分量和左旋圆偏振光分量中的任一个的胆甾醇层; 以及设置在胆甾醇层的出射侧的扩散层，以扩散由胆甾醇层反射或透射的圆偏振光成分。 胆甾醇层可以是对于每个像素具有红色，绿色和蓝色像素区域的滤色器。 每个像素区域反射或透射入射光的选定波长带中的右旋圆偏振光分量和左旋圆偏振光分量中的任一个。

公开(公告)号：US06961106B2

公开(公告)日：2005-11-01

申请号：US10662124

申请日：2003-09-15

申请人： Keiji Kashima

发明人： Keiji Kashima

IPC分类号： G02B5/30 ,  G02F1/13363 ,  G02F1/1335

CPC分类号： G02F1/133634 ,  G02B5/3016 ,  G02F2201/086 ,  G02F2201/343

摘要： The present invention provides an inexpensive retardation optical element having the function of reflecting ultraviolet light, capable of decreasing the amount of ultraviolet light that enters a liquid crystal cell, and a liquid crystal display comprising such a retardation optical element. A retardation optical element having the function of reflecting ultraviolet light 10 comprises a retardation layer 12 having a cholesteric liquid crystalline molecular structure in planar orientation. The retardation layer 12 is made so that at least part of its selective reflection wave range for light, which the retardation layer 12 selectively reflects, due to its liquid crystalline molecular structure, is included in an ultraviolet region of 100 to 400 nm and that the maximum reflectance for light in this ultraviolet region is 30% or more.

摘要翻译： 本发明提供了具有能够减少进入液晶单元的紫外线的量的紫外线的反射功能的廉价的延迟光学元件，以及包括这种延迟光学元件的液晶显示器。 具有反射紫外光的功能的延迟光学元件10包括具有平面取向的胆甾型液晶分子结构的延迟层12。 延迟层12被制成使得由于其液晶分子结构而使相位差层12选择性地反射的光的选择反射波范围的至少一部分被包括在100至400nm的紫外区域中，并且 该紫外线区域的光的最大反射率为30％以上。

公开(公告)号：US06825984B2

公开(公告)日：2004-11-30

申请号：US10673410

申请日：2003-09-30

申请人： Keiji Kashima ,  Fumihiro Arakawa

发明人： Keiji Kashima ,  Fumihiro Arakawa

IPC分类号： G02B502

CPC分类号： G02B6/0031 ,  G02B5/021 ,  G02B5/0215 ,  G02B5/0226 ,  G02B5/0231 ,  G02B5/0242 ,  G02B5/0278 ,  G02B5/045 ,  G02B6/0038 ,  G02B6/0041 ,  G02B6/0043 ,  G02B6/0046 ,  G02B6/005 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0071 ,  G02F1/133606 ,  G02F2001/133607

摘要： In an optical sheet 10 having a prism surface 16 formed by providing unit prisms 14 on the upper surface of a transparent base material 12, a coating layer 18 is provided on the reverse surface of the transparent base material opposite to the prism surface 16, spherical beads 20 are arranged projecting from the surface of the coating layer 18 by 1 to 10 &mgr;m in height, and the coating layer 18 is brought into contact with the flat and smooth surface 22A of the light-transmissive material 22 through the spherical beads 20 which are put between them. The spherical beads are 1 &mgr;m or less in half bandwidth of the distribution of particle diameters and are made uniform in height projecting from the coating layer 18.

公开(公告)号：US5730518A

公开(公告)日：1998-03-24

申请号：US466747

申请日：1995-06-06

申请人： Keiji Kashima ,  Naoki Yoshida ,  Osamu Shoji ,  Eiichi Yanagi ,  Takumi Fukunishi

发明人： Keiji Kashima ,  Naoki Yoshida ,  Osamu Shoji ,  Eiichi Yanagi ,  Takumi Fukunishi

IPC分类号： F21V8/00 ,  G02B6/00

CPC分类号： G02B6/0051 ,  G02B6/0053 ,  G02B6/0038 ,  G02B6/0068 ,  G02B6/0071

摘要： In a backlighting device for use with display panels that comprises a light conducting plate made of a light-transmissive material, one of the major faces of said light conducting plate being provided with a light diffusing capability and covered with a specular or light diffusing/reflecting plate, and a linear light source provided in proximity to the end portion of at least one side of said light conducting plate, the improvement wherein at least one sheet that is made of a light-transmissive material and that has a multiple of raised structures having straight ridgelines at minute intervals on the same side in such a manner that the ridgelines are substantially parallel to one another or at least one sheet that is made of a light-transmissive material and that has a multiple of pyramidal or conical projecting structures at minute intervals on the same side, said projecting structures having portions of such a shape that the vertical angles are substantially the same, is provided on the exit face of the light conducting plate in such a way that either type of structures face outward.

公开(公告)号：US09551824B2

公开(公告)日：2017-01-24

申请号：US13387863

申请日：2010-07-29

申请人： Hiroshi Yamamoto ,  Hiroshi Sekiguchi ,  Masahiro Goto ,  Keiji Kashima

发明人： Hiroshi Yamamoto ,  Hiroshi Sekiguchi ,  Masahiro Goto ,  Keiji Kashima

IPC分类号： G02F1/1335 ,  F21V8/00

CPC分类号： G02B6/0065 ,  G02B6/0038 ,  G02B6/0041 ,  G02F2001/133607 ,  Y10T29/49826

摘要： A light guide plate has a light exit surface, a back surface opposed to the light exit surface, and a light entrance surface consisting of at least part of a side surface. The light guide plate also has a body portion, and a light exit-side layer formed from an ionizing radiation curable resin. The light exit-side layer includes an optical element portion which defines the light exit surface. The optical element portion includes unit shaped elements arranged in one direction intersecting a light guide direction, each unit shaped element extending linearly in a direction intersecting the one direction.

摘要翻译： 导光板具有光出射面，与光射出面相对的背面，以及由侧面的至少一部分构成的光入射面。 导光板还具有主体部分和由电离辐射固化树脂形成的光出射侧层。 光出射侧层包括限定光出射面的光学元件部。 光学元件部分包括沿与光导方向相交的一个方向布置的单元形元件，每个单元形状元件在与该一个方向相交的方向上线性地延伸。

公开(公告)号：US20110013121A1

公开(公告)日：2011-01-20

申请号：US12923312

申请日：2010-09-14

申请人： Keiji Kashima

发明人： Keiji Kashima

IPC分类号： G02F1/1335 ,  G02F1/1333 ,  G02F1/13 ,  G03F7/20

CPC分类号： G02B27/26 ,  G02B5/201 ,  G02B5/3016 ,  G02B27/22 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/135 ,  G02F1/1393 ,  G02F2001/133541 ,  G02F2001/133638 ,  G02F2413/09 ,  G03F7/001 ,  G03F7/2022 ,  G03F7/26

摘要： A phase difference layer laminated body used in a three-dimensional liquid crystal display device, wherein unit cells are divided into groups for left and right eyes, which are given different degrees of polarization, thereby creating a three-dimensional image, further wherein the phase difference layer laminated body has a base material having orientability, and a phase difference layer made of a liquid crystal material that can form a nematic phase and formed in a pattern with two different portions, and the liquid crystal material in each of two different portions is oriented to have different refractive index anisotropy each other that conforms to the two different degrees of polarization and fixed as it is.

摘要翻译： 一种在三维液晶显示装置中使用的相位差层叠体，其特征在于，将单位细胞分成左眼和右眼的组，赋予不同的偏振度，从而形成三维图像，其特征在于， 差分层叠体具有取向性的基材，以及由能够形成向列相形成为两个不同部分的图案的液晶材料制成的相位差层，两个不同部分的液晶材料为 取向为具有不同的折射率各向异性，其符合两种不同的偏振度并且是固定的。

公开(公告)号：US07411645B2

公开(公告)日：2008-08-12

申请号：US11602382

申请日：2006-11-21

申请人： Keiji Kashima

发明人： Keiji Kashima

IPC分类号： G02F1/1337 ,  G02F1/1335

CPC分类号： G02F1/13363 ,  G02B5/3016 ,  G02B5/3083 ,  G02F1/1393 ,  G02F2001/133633 ,  G02F2001/133638 ,  G02F2413/09

摘要： A main object of the invention is to provide a phase difference layer laminated body which has a very high freedom in orienting molecules of its phase difference layer, and which is manufactured with ease.To achieve the above object, the invention provides a phase difference layer laminated body including a base material having orientability, and a phase difference layer made of a liquid crystal material that can form a nematic phase and formed in a pattern on the base material such as to have refractive index anisotropy.

摘要翻译： 本发明的主要目的在于提供一种相位差层叠体，其在相位差层的分子取向上具有非常高的自由度，而且易于制造。 为了实现上述目的，本发明提供一种相位差层叠体，其包括具有取向性的基材，以及由能够形成向列相的液晶材料形成的相位差层，并且在基材上形成图案， 具有折射率各向异性。

公开(公告)号：US07359018B2

公开(公告)日：2008-04-15

申请号：US10499906

申请日：2003-08-25

申请人： Keiji Kashima

发明人： Keiji Kashima

IPC分类号： G02F1/1335

CPC分类号： G02F1/133636 ,  G02B5/3016 ,  G02F2001/133633 ,  G02F2413/02 ,  G02F2413/07 ,  G02F2413/11 ,  G02F2413/13

摘要： The present invention provides a retardation optical element comprising a negative C plate (retardation layer) and an A plate (retardation layer), never causing the appearance of bright-and-dark patterns on the displayed image even when placed between a liquid crystal cell and a polarizer, thus being capable of effectively preventing lowering of display quality. A retardation optical element 10 comprises: a C plate type retardation layer 12 that has a cholesteric structure with liquid crystalline molecules in planar orientation and functions as a negative C plate; and an A plate type retardation layer 14 that has a nematic structure and functions as an A plate. The C plate type retardation layer 12 and the A plate type retardation layer 14 are laminated adjacently to each other, and the directions of the directors Cb of liquid crystalline molecules on the surface 12B, on the A plate type retardation layer 14 side, of the C plate type retardation layer 12 are substantially the same as the directions of the directors Na of liquid crystalline molecules on the surface 14A, on the C plate type retardation layer 12 side, of the A plate type retardation layer 14. Further, the C plate type retardation layer 12 is made to have a helical structure with a helical pitch so adjusted that the C plate type retardation layer 12 selectively reflects, owing to its structure, light whose wavelength falls in a wave range that is different from the wave range of incident light.

摘要翻译： 本发明提供一种包括负C板（延迟层）和A板（延迟层）的延迟光学元件，即使当放置在液晶盒和液晶盒之间时，也不会在显示图像上出现亮暗图案 偏振器，因此能够有效地防止显示质量的降低。 延迟光学元件10包括：具有平面取向的液晶分子的胆甾型结构并用作负C板的C板型延迟层12; 以及具有向列结构并用作A板的A板型延迟层14。 C板型延迟层12和A板型延迟层14彼此相邻，并且在A板型延迟层14侧的表面12B上的液晶分子的导向体Cb的方向为 C板型延迟层12与A板型延迟层14的C板型延迟层12侧的表面14A上的液晶分子的导向体Na的方向大致相同。 此外，C板型延迟层12被制成具有如此调整的螺旋节距的螺旋结构，使得C板型延迟层12由于其结构而选择性地反射其波长在不同于 入射光的波长范围。

公开(公告)号：US20080002108A1

公开(公告)日：2008-01-03

申请号：US11889655

申请日：2007-08-15

申请人： Keiji Kashima

发明人： Keiji Kashima

IPC分类号： G02F1/1335

CPC分类号： G02F1/13362 ,  G02F1/133528 ,  G02F1/133536 ,  G02F1/134363 ,  G02F1/13718 ,  G02F1/1393 ,  G02F2001/133531 ,  G02F2001/133541 ,  G02F2001/133543 ,  G02F2001/133545 ,  G02F2203/01 ,  G02F2203/02

摘要： In a liquid-crystal display (10), unpolarized light from a light source (12) passes through a linear polarization separation layer (14) and strikes a liquid-crystal cell (16). The liquid-crystal cell (16), in response to an applied electrical field, changes the direction of a director, so as to change the direction of the electrical field oscillation vector of the incident linearly polarized light by substantially 0 to 90°, this light then striking a dichroic linear polarization layer (18) on the surface, whereby only a component coincident with the polarization transmission axis thereof is allowed to exit to the outside. The dichroic linear polarization layer (18) transmits 50% of this incident light, and absorbs the remaining 50%.

摘要翻译： 在液晶显示器（10）中，来自光源（12）的非偏振光通过线偏振分离层（14）并撞击液晶元件（16）。 液晶单元（16）响应于所施加的电场改变导向器的方向，从而将入射的线偏振光的电场振荡矢量的方向基本上改变为90度，这样 然后光照射表面上的二向色线性偏振层（18），由此仅允许与其偏振透射轴一致的分量离开外部。 二向色线性偏振层（18）透射50％的入射光，并吸收剩余的50％。