公开(公告)号：US07462381B2

公开(公告)日：2008-12-09

申请号：US10512561

申请日：2003-04-24

申请人： Hiroyuki Yoshimi ,  Yuuichi Nishikouji ,  Nao Murakami ,  Masaki Hayashi

发明人： Hiroyuki Yoshimi ,  Yuuichi Nishikouji ,  Nao Murakami ,  Masaki Hayashi

IPC分类号： C09K19/00 ,  C09K19/56

CPC分类号： G02B5/3016 ,  G02F1/13363 ,  Y10T428/10 ,  Y10T428/1036

摘要： A method of manufacturing a birefringent film is provided, by which a birefringent film including a liquid crystal compound birefringent layer and another birefringent layer can be manufactured so as to have a reduced thickness in a reduced number of process steps. In the manufacturing method, a non-liquid crystal polymer birefringent layer that has been subjected to an aligning treatment is used as an alignment layer for a liquid crystal compound. According to the manufacturing method, the process step of separately preparing an alignment layer and the need for the additional alignment layer can be eliminated, thereby allowing the total thickness of the birefringent film to be reduced.

摘要翻译： 提供一种制造双折射膜的方法，通过该方法可以制造具有液晶复合双折射层和另一双折射层的双折射膜，从而减少加工步骤的厚度。 在制造方法中，使用已经进行了取向处理的非液晶聚合物双折射层作为液晶化合物的取向层。 根据该制造方法，可以消除单独制备取向层的工艺步骤和对附加取向层的需要，从而可以减小双折射膜的总厚度。

公开(公告)号：US20050058781A1

公开(公告)日：2005-03-17

申请号：US10940622

申请日：2004-09-15

申请人： Masaki Hayashi ,  Nao Murakami ,  Yuuichi Nishikouji ,  Hiroyuki Yoshimi

发明人： Masaki Hayashi ,  Nao Murakami ,  Yuuichi Nishikouji ,  Hiroyuki Yoshimi

IPC分类号： G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  C09K19/00

CPC分类号： G02B5/3083 ,  Y10T428/1036

摘要： It is an object of the present invention to provide a method for manufacturing a birefringent film that can reduce the amount of a remaining solvent in the birefringent film without degrading appearance uniformity or an alignment in its thickness direction. The method of the present invention for manufacturing an optical film includes the steps of coating a base with a polymer solution obtained by dissolving a polyimide-containing polymer in a solvent so as to form a coating film; and drying the coating film so as to form a birefringent film, in which the drying step includes at least two stages of drying processes. The drying step preferably include two stages of the drying processes, and a temperature in the former stage of the drying process is preferably lower than a temperature in the latter stage of the drying process. If adding a step of providing the birefringent film with an anisotropy of a refractive index in an in-plane direction, a birefringent film with an optical biaxiality can be manufactured.

摘要翻译： 本发明的目的是提供一种制造双折射膜的方法，其可以减少双折射膜中剩余溶剂的量而不降低其外观均匀性或其厚度方向的取向。 本发明的制造光学薄膜的方法包括以下步骤：将通过将含聚酰亚胺的聚合物溶解在溶剂中而获得的聚合物溶液涂覆底部以形成涂膜; 并干燥涂膜以形成双折射膜，其中干燥步骤包括至少两个阶段的干燥过程。 干燥步骤优选包括两个阶段的干燥过程，干燥过程的前一阶段的温度优选低于干燥过程后期的温度。 如果增加在面内方向上提供折射率的各向异性的双折射膜的步骤，则可以制造具有光学双轴性的双折射膜。

公开(公告)号：US07535531B2

公开(公告)日：2009-05-19

申请号：US10540486

申请日：2004-07-23

申请人： Yuuichi Nishikouji ,  Hiroyuki Yoshimi ,  Nao Murakami

发明人： Yuuichi Nishikouji ,  Hiroyuki Yoshimi ,  Nao Murakami

IPC分类号： G02F1/1335

CPC分类号： G02B5/3083

摘要： The present invention provides a birefringent optical film that allows a liquid crystal display to achieve excellent contrast and a wide viewing angle and does not cause coloring of the liquid crystal display. The birefringent optical film includes at least one birefringent A-layer having a property satisfying nya≧nza>nxa or nza>nya>nza and at least one birefringent B-layer having a property satisfying nxb≧nyb>nzb.

摘要翻译： 本发明提供了一种允许液晶显示器实现优异的对比度和宽视角并且不引起液晶显示器着色的双折射光学膜。 双折射光学膜包括具有满足nya> = nza> nxa或nza> nya> nza性质的至少一个双折射A层和至少一种具有满足nxb> = nyb> nzb的性质的双折射B层。

公开(公告)号：US07223452B2

公开(公告)日：2007-05-29

申请号：US10551959

申请日：2004-04-28

申请人： Nao Murakami ,  Yuuichi Nishikouji ,  Hiroyuki Yoshimi

发明人： Nao Murakami ,  Yuuichi Nishikouji ,  Hiroyuki Yoshimi

IPC分类号： G02F1/3363

CPC分类号： G02F1/13363 ,  B29C55/026 ,  B29K2995/0032 ,  G02B5/3083 ,  Y10T428/10 ,  Y10T428/1036

摘要： An optical film, which includes a laminate of a base and a birefringent layer, and which is excellent in adhesiveness between the base and the birefringent layer, is provided. The birefringent layer is formed on the base by: coating a material of the birefringent layer on the base so as to form a coating film; stretching/shrinking the base so as to stretch/shrink the coating film; and solidifying the material of the coating film. The material is dispersed or dissolved previously in a solvent and coated in a form of solution, where the solvent used exhibits solubility with respect to the base, and in the coating step, the solvent is infiltrated into a part of the interior of the base, thereby obtaining an optical film with excellent adhesiveness between the base and the birefringent layer.

摘要翻译： 提供了包括基底和双折射层的层压体并且基底和双折射层之间的粘合性优异的光学膜。 双折射层通过以下步骤形成在基底上：在基底上涂覆双折射层的材料以形成涂膜; 拉伸/收缩基底以拉伸/收缩涂膜; 并固化涂膜的材料。 该材料预先分散或溶解在溶剂中并以溶液形式涂覆，其中使用的溶剂表现出相对于碱的溶解性，并且在涂布步骤中，溶剂渗透到基底内部的一部分中， 从而获得在基底和双折射层之间具有优异粘附性的光学膜。

公开(公告)号：US20060176427A1

公开(公告)日：2006-08-10

申请号：US10546874

申请日：2004-08-26

申请人： Hiroyuki Yoshimi ,  Yuuichi Nishikouji ,  Nao Murakami

发明人： Hiroyuki Yoshimi ,  Yuuichi Nishikouji ,  Nao Murakami

IPC分类号： G02F1/1335

CPC分类号： G02B5/3083 ,  G02F1/13363

摘要： The present invention provides a composite birefringent member including a first birefringent layer and a second birefringent layer. The second birefringent layer is formed on at least one surface of the first birefringent layer. In the wavelength range from 400 to 800 nm, a value of Δndx/Δnd550 and a value of Rthx/Rth550 of the composite birefringent member as a whole are different from each other. The composite birefringent member satisfies a requirement that the second birefringent layer is formed of a polymer such as polyamide and/or a requirement that Δnd and Rth of the composite birefringent member satisfy formulae (I) and (II) below. As a result, the composite birefringent member allows a liquid crystal display to achieve a wide viewing angle, compensates birefringence of a liquid crystal cell, and does not cause display coloring of the liquid crystal display. Δnd400/Δnd550 1   (II)

摘要翻译： 本发明提供了包括第一双折射层和第二双折射层的复合双折射元件。 第二双折射层形成在第一双折射层的至少一个表面上。 在400至800nm的波长范围内，Deltand / Deltand＆lt; 550＆gt;的值和Rth×x / Rth＆lt; 550复合双折射元件整体上彼此不同。 复合双折射元件满足第二双折射层由聚酰胺等聚合物形成的要求，和/或复合双折射构件的Deltand和Rth满足下式（I）和（II）的要求。 结果，复合双折射构件允许液晶显示器实现宽视角，补偿液晶单元的双折射，并且不会引起液晶显示器的显示着色。 <？in-line-formula description =“In-line Formulas”end =“lead”？> Deltand <400> <1（I） line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> Rth Rth＆lt; 1＆gt; 1（II）<？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US20050221023A1

公开(公告)日：2005-10-06

申请号：US10518079

申请日：2003-12-24

申请人： Michie Sakamoto ,  Yuuichi Nishikouji ,  Nao Murakami ,  Masaki Hayashi

发明人： Michie Sakamoto ,  Yuuichi Nishikouji ,  Nao Murakami ,  Masaki Hayashi

IPC分类号： B29C41/28 ,  B29C55/04 ,  C08J7/04 ,  G02F1/13363 ,  C09K19/00

CPC分类号： C08J7/047 ,  B29C41/28 ,  B29C55/04 ,  B29K2079/08 ,  B29K2995/0032 ,  C08J2479/00 ,  G02F1/133634 ,  Y10T428/1036

摘要： A polyimide film having a biaxial optical anisotropy and excellent durability is provided. A solution of polyimide having an imidization ratio of 98% to 100% is applied onto a plastic base, and then the solution is dried, thus forming a polyimide coating. Subsequently, the polyimide coating is stretched together with the plastic base so as to satisfy nx>ny>nz, wherein nx and ny indicate a refractive index in a direction exhibiting a maximum refractive index within a plane and that in a direction perpendicular thereto and nz indicates a refractive index in a thickness direction.

摘要翻译： 提供了具有双轴光学各向异性和优异的耐久性的聚酰亚胺膜。 将酰亚胺化率为98％至100％的聚酰亚胺溶液施加到塑料基材上，然后将溶液干燥，从而形成聚酰亚胺涂层。 随后，聚酰亚胺涂层与塑料基体一起拉伸以满足nx> ny> nz，其中nx和ny表示在平面内呈现最大折射率的方向上的折射率，以及在垂直于其的方向上的折射率，nz 表示厚度方向的折射率。

公开(公告)号：US07586571B2

公开(公告)日：2009-09-08

申请号：US10546874

申请日：2004-08-26

申请人： Hiroyuki Yoshimi ,  Yuuichi Nishikouji ,  Nao Murakami

发明人： Hiroyuki Yoshimi ,  Yuuichi Nishikouji ,  Nao Murakami

IPC分类号： G02F1/1335

CPC分类号： G02B5/3083 ,  G02F1/13363

摘要： The present invention provides a composite birefringent member including a first birefringent layer and a second birefringent layer. The second birefringent layer is formed on at least one surface of the first birefringent layer. In the wavelength range from 400 to 800 nm, a value of Δndx/Δnd550 and a value of Rthx/Rth550 of the composite birefringent member as a whole are different from each other. The composite birefringent member satisfies a requirement that the second birefringent layer is formed of a polymer such as polyamide and/or a requirement that Δnd and Rth of the composite birefringent member satisfy formulae (I) and (II) below. As a result, the composite birefringent member allows a liquid crystal display to achieve a wide viewing angle, compensates birefringence of a liquid crystal cell, and does not cause display coloring of the liquid crystal display. Δnd400/Δnd550 1   (II).

摘要翻译： 本发明提供了包括第一双折射层和第二双折射层的复合双折射元件。 第二双折射层形成在第一双折射层的至少一个表面上。 在400至800nm的波长范围内，复合双折射元件的Deltandx / Deltand550值和Rthx / Rth550的值彼此不同。 复合双折射元件满足第二双折射层由聚酰胺等聚合物形成的要求，和/或复合双折射构件的Deltand和Rth满足下式（I）和（II）的要求。 结果，复合双折射构件允许液晶显示器实现宽视角，补偿液晶单元的双折射，并且不会引起液晶显示器的显示着色。 <？in-line-formula description =“In-line Formulas”end =“lead”？> Deltand400 / Deltand550 <1（I）<？in-line-formula description =“In-line Formulas”end =“tail” ？> <？in-line-formula description =“In-line Formulas”end =“lead”？> Rth400 / Rth550> 1（II）<？in-line-formula description =“In-line Formulas”end = “尾巴”？

公开(公告)号：US20060182896A1

公开(公告)日：2006-08-17

申请号：US10551959

申请日：2004-04-28

申请人： Nao Murakami ,  Yuuichi Nishikouji ,  Hiroyuki Yoshimi

发明人： Nao Murakami ,  Yuuichi Nishikouji ,  Hiroyuki Yoshimi

IPC分类号： C09K19/00

CPC分类号： G02F1/13363 ,  B29C55/026 ,  B29K2995/0032 ,  G02B5/3083 ,  Y10T428/10 ,  Y10T428/1036

摘要： An optical film, which includes a laminate of a base and a birefringent layer, and which is excellent in adhesiveness between the base and the birefringent layer, is provided. The birefringent layer is formed on the base by: coating a material of the birefringent layer on the base so as to form a coating film; stretching/shrinking the base so as to stretch/shrink the coating film; and solidifying the material of the coating film. The material is dispersed or dissolved previously in a solvent and coated in a form of solution, where the solvent used exhibits solubility with respect to the base, and in the coating step, the solvent is infiltrated into a part of the interior of the base, thereby obtaining an optical film with excellent adhesiveness between the base and the birefringent layer.

摘要翻译： 提供了包括基底和双折射层的层压体并且基底和双折射层之间的粘合性优异的光学膜。 双折射层通过以下步骤形成在基底上：在基底上涂覆双折射层的材料以形成涂膜; 拉伸/收缩基底以拉伸/收缩涂膜; 并固化涂膜的材料。 该材料预先分散或溶解在溶剂中并以溶液形式涂覆，其中使用的溶剂表现出相对于碱的溶解性，并且在涂布步骤中，溶剂渗透到基底内部的一部分中， 从而获得在基底和双折射层之间具有优异粘附性的光学膜。

公开(公告)号：US07052747B2

公开(公告)日：2006-05-30

申请号：US10736787

申请日：2003-12-17

申请人： Yuuichi Nishikouji ,  Nao Murakami ,  Tokio Fujita ,  Hiroyuki Yoshimi

发明人： Yuuichi Nishikouji ,  Nao Murakami ,  Tokio Fujita ,  Hiroyuki Yoshimi

IPC分类号： G02F1/13363

CPC分类号： G02B5/3083 ,  G02F1/13363 ,  Y10T428/10 ,  Y10T428/1036

摘要： The present invention provides a birefringent optical film having a high orientation for easily obtaining a desired retardation value and also a small photoelastic coefficient. The birefringent optical film includes at least two kinds of polymer materials. A total of products of Cn and Wn satisfies a numerical formula (1): Σ(Cn×Wn)≦20×10−8 cm2/N  (1) where Cn and Wn denote respectively a photoelastic coefficient and a volume fraction of each polymer material, and at least one of the polymer materials of the film has a photoelastic coefficient value of at least 60×10−8 cm2/N, while at least one of the remaining polymer materials has a negative value of photoelastic coefficient.

摘要翻译： 本发明提供了一种具有高取向性的双折射光学膜，用于容易地获得期望的延迟值，并且还具有小的光弹性系数。 双折射光学膜包括至少两种聚合物材料。 总共Cn和Wn的乘积满足数学公式（1）：<？in-line-formula description =“In-line Formulas”end =“lead”？> Sigma（CnxWn）<= 20×10 -8 N /（1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中Cn和Wn分别表示光弹性系数， 每个聚合物材料的体积分数，以及薄膜的至少一种聚合物材料的光弹性系数值至少为60×10 -8 cm 2 / N，同时 剩余的聚合物材料中的至少一种具有光弹性系数的负值。

公开(公告)号：US20060072221A1

公开(公告)日：2006-04-06

申请号：US10540486

申请日：2004-07-23

申请人： Yuuichi Nishikouji ,  Hiroyuki Yoshimi ,  Nao Murakami

发明人： Yuuichi Nishikouji ,  Hiroyuki Yoshimi ,  Nao Murakami

IPC分类号： G02B5/04

CPC分类号： G02B5/3083

摘要： The present invention provides a birefringent optical film that allows a liquid crystal display to achieve excellent contrast and a wide viewing angle and does not cause coloring of the liquid crystal display. The birefringent optical film includes at least one birefringent A-layer having a property satisfying nya≧nza>nxa or nza>nya>nza and at least one birefringent B-layer having a property satisfying nxb≧nyb>nzb.

摘要翻译： 本发明提供了一种允许液晶显示器实现优异的对比度和宽视角并且不引起液晶显示器着色的双折射光学膜。 双折射光学膜包括至少一种具有满足ny的性质的双折射A层，其中，n层 具有性质满足n×b = ny的至少一个双折射B层 b nz