公开(公告)号：US06630970B2

公开(公告)日：2003-10-07

申请号：US09897318

申请日：2001-07-02

申请人： Giorgio Trapani ,  William K. Smyth ,  Philip Ralli ,  James Gordon ,  John Cael ,  John C. Branca ,  David M. Foresyth ,  Atsushi Suzuki ,  William Pugh

发明人： Giorgio Trapani ,  William K. Smyth ,  Philip Ralli ,  James Gordon ,  John Cael ,  John C. Branca ,  David M. Foresyth ,  Atsushi Suzuki ,  William Pugh

IPC分类号： G01F11336

CPC分类号： G02F1/133528

摘要： A liquid crystal display structure includes a liquid crystal display cell having a front surface and a back surface. One or more intrinsic polarizers lacking protective coatings thereon, such as K-type polarizers and thin KE polarizer sheets, are disposed adjacent to the front and back surfaces of the liquid crystal display cell. Alternatively, thinly cladded or encased iodine polarizers are disposed adjacent to the front and back surfaces of the liquid crystal display cell. The liquid crystal display structure may be used in conjunction with other optical display elements to enhance the brightness and contrast of the liquid crystal display.

公开(公告)号：US20060139574A1

公开(公告)日：2006-06-29

申请号：US11131796

申请日：2005-05-18

申请人： Philip Ralli ,  Pradnya Nagarkar ,  James Gordon ,  Ikuko Ebihara ,  Charles Bruzzone ,  Giorgio Trapani

发明人： Philip Ralli ,  Pradnya Nagarkar ,  James Gordon ,  Ikuko Ebihara ,  Charles Bruzzone ,  Giorgio Trapani

IPC分类号： G03B21/14

CPC分类号： H04N9/3191 ,  G02B5/305 ,  G02B27/28 ,  H04N9/3167

摘要： A projection system including an intrinsic polarizer is disclosed. The projection system includes a light source producing illumination light, an imager disposed to receive the illumination light, and a projection lens disposed to receive the illumination light from the imager. The imager includes an intrinsic polarizer. An intrinsic polarizer stack including a U.V. curable adhesive is also disclosed.

摘要翻译： 公开了一种包括本征偏振器的投影系统。 投影系统包括产生照明光的光源，被设置为接收照明光的成像器和设置成接收来自成像器的照明光的投影透镜。 成像器包括本征偏振器。 本征偏振器堆叠包括一个U.V. 还公开了可固化粘合剂。

公开(公告)号：US20050140895A1

公开(公告)日：2005-06-30

申请号：US10746962

申请日：2003-12-24

申请人： Philip Watson ,  Philip Ralli ,  John Cael

发明人： Philip Watson ,  Philip Ralli ,  John Cael

IPC分类号： G02B5/30 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/141

CPC分类号： G02F1/133528 ,  G02F1/134363

摘要： A polarizer is used with a liquid crystal display (LCD) cell whose liquid crystal molecules are switched in the plane of the cell. The LCD has birefringent properties that are different from other types of LCD cell and, unlike other types of LCD, the image contrast is maintained and there is little color shift in the dark state when a low birefringence polarizer is used with the SIP LCD cell. In one embodiment, the x-z retardation of the layers between the polarization-sensitive absorbing layer and the LCD is less than 20 nm. In another embodiment, the x-z birefringence is less than 0.0005. The low levels of retardation and birefringence may be achieved by omitting the commonly used cellulose triacetate layer between the polarization-sensitive absorbing layer and the LCD.

摘要翻译： 偏振器与液晶显示器（LCD）单元一起使用，其液晶分子在单元的平面中被切换。 LCD具有与其他类型的LCD单元不同的双折射性质，并且与其它类型的LCD不同，保持了图像对比度，并且当与SIP LCD单元一起使用低双折射偏振器时，暗态中几乎没有颜色偏移。 在一个实施例中，偏振敏感吸收层和LCD之间的层的x-z延迟小于20nm。 在另一个实施方案中，x-z双折射小于0.0005。 可以通过在偏振敏感吸收层和LCD之间省略常用的三乙酸纤维素层来实现低水平的延迟和双折射。

公开(公告)号：US20060028725A1

公开(公告)日：2006-02-09

申请号：US10910211

申请日：2004-08-03

申请人： Michael Gerlach ,  Gerald Nkwantah ,  Jonathan Mack ,  Pradnya Nagarkar ,  Philip Ralli

发明人： Michael Gerlach ,  Gerald Nkwantah ,  Jonathan Mack ,  Pradnya Nagarkar ,  Philip Ralli

IPC分类号： G02F1/1335

CPC分类号： G02B5/3033

摘要： An improved method of forming an intrinsic polarizer, referred to as a K-type polarizer, includes stretching a polymeric film a first stretching step. The polymeric film comprises a hydroxylated linear polymer which is converted after the first stretching step to form dichroic, copolymer polyvinylene blocks aligned in the polymeric film. The polymeric film is stretched in a second stretching step while converting the hydroxylated linear polymer. This method produces an improved K-type polarizer with excellent polarizing and color characteristics. For example, the dichroic ratio is higher than 100, the color shift for light passed through the polarizer in a crossed configuration is low, and the absorption of light in the blue region of the visible spectrum is more than one half of the absorption for light in the middle of the visible spectrum.