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：US07128952B2

公开(公告)日：2006-10-31

申请号：US10509759

申请日：2003-05-21

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

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

IPC分类号： G02F1/3363

CPC分类号： B32B27/08 ,  B32B27/306 ,  B32B2307/42 ,  B32B2457/202 ,  B32B2551/00 ,  G02B5/3083 ,  Y10T428/10 ,  Y10T428/1036

摘要： An optical film including a transparent polymer film (b) and a birefringent layer (a) formed of a polymer and laminated above the transparent polymer film (b) is provided. The birefringent layer (a) and the transparent polymer film (b) satisfy the following formula (1), the birefringent layer (a) satisfies the following formulae (2) and (3), and the polymer forming the birefringent layer (a) has a weight-average molecular weight in the range between 10,000 and 400,000 inclusive. Δn(a)>Δn(b)×10  (1) 1

摘要翻译： 提供了一种包括透明聚合物膜（b）和由聚合物形成并层压在透明聚合物膜（b）上方的双折射层（a）的光学膜。 双折射层（a）和透明聚合物膜（b）满足下式（1），双折射层（a）满足下式（2）和（3），形成双折射层（a）的聚合物 重均分子量在10,000和400,000之间的范围内。 <？in-line-formula description =“在线公式”end =“lead”？> Deltan（a）> Deltan（b）x10（1）<？in-line-formula description =“In-line Formulas” end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 1 <（nx-nz）/（nx-ny）（2） -formulae description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line formula”end =“lead”？> 0.0005 <= Deltan（a）<= 0.5 3）<？in-line-formula description =“In-line Formulas”end =“tail”？>该光学膜可以防止虹膜的发生，裂缝的发生和延迟的变化的发生。

公开(公告)号：US07054049B2

公开(公告)日：2006-05-30

申请号：US10501959

申请日：2003-01-22

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

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

IPC分类号： G02F1/03 ,  G02F1/1335 ,  G02B5/30

CPC分类号： G02F1/133634 ,  G02B5/3083 ,  G02F2201/50 ,  G02F2201/54

摘要： The present invention provides a transparent optical film that has excellent optical characteristics for realizing the uniform retardation distribution and restraining rainbow-colored irregularities. The optical film, which is obtained by laminating a birefringent layer (a) on a transparent film (b), satisfies all the following formulae (I), (II) and (III). Δn(a)>Δn(b)×10  (I) 1

摘要翻译： 本发明提供了一种具有优异的光学特性的透明光学膜，用于实现均匀的延迟分布和抑制彩虹色的不规则。 通过在透明膜（b）上层叠双折射层（a）而获得的光学膜满足下述式（I），（II）和（III）。 <？in-line-formula description =“In-line Formulas”end =“lead”？> Deltan（a）> Deltan（b）x10（I）<？in-line-formula description =“In-line Formulas” end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 1 <（nx-nz）/（nx-ny）（II） -formulae description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line formula”end =“lead”？> 0.0005 <= Deltan（a）<= 0.5 在上述式（I），（II）和（III）中，Deltan（a）和Deltan（b）表示 分别为双折射层（a）和透明膜（b）的双折射指数。 nx，ny和nz的符号分别表示双折射层（a）中的X轴方向，Y轴方向和Z轴方向的折射率。 X轴对应于在双折射层（a）的平面内具有最大折射率的轴向，Y轴对应于与该平面内的X轴垂直的轴向，Z轴对应于 到垂直于X轴和Y轴的厚度方向。

公开(公告)号：US20050151906A1

公开(公告)日：2005-07-14

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： G02B5/30 ,  G02F1/13363 ,  G02F1/1335

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：US07494689B2

公开(公告)日：2009-02-24

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： B05D5/06

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：用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：US20060055853A1

公开(公告)日：2006-03-16

申请号：US10522380

申请日：2003-07-29

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

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

IPC分类号： G02F1/1335

CPC分类号： G02B5/3016 ,  G02F1/133528

摘要： The present invention relates to an optical film that is excellent in optical properties and can be produced at low cost. In the optical film formed by laminating a transparent polymer film layer and a birefringent layer of a non-liquid crystalline polymer, the birefringent layer satisfies a condition represented by nx≧ny>nz and the in-plane retardation of the transparent polymer film layer is 50 nm or less. In the above formula, nx, ny and nz are the refraction indices in the X-, Y- and Z-axes directions of the birefringent layer, respectively. The X-axis direction is the axial direction in which the refraction index shows a maximum value in the in-plane direction of the birefringent layer, the Y-axis direction is the axial direction perpendicular to the X-axis direction in the plane, and the Z-axis direction is the thickness direction perpendicular to the X- and Y-axes directions.

摘要翻译： 本发明涉及光学性能优异且可以低成本制造的光学膜。 在通过层叠透明聚合物膜层和非液晶聚合物的双折射层而形成的光学膜中，双折射层满足由nx> = ny> nz表示的条件，并且透明聚合物膜层的面内相位差 为50nm以下。 在上述公式中，nx，ny和nz分别是双折射层的X，Y和Z轴方向上的折射率。 X轴方向是折射率在双折射层的面内方向上呈现最大值的轴向，Y轴方向为与该平面中的X轴方向垂直的轴向， Z轴方向是与X轴方向和Y轴方向垂直的厚度方向。

公开(公告)号：US20050231839A1

公开(公告)日：2005-10-20

申请号：US10509759

申请日：2003-05-21

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

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

IPC分类号： B32B27/08 ,  G02B5/30 ,  G02B5/08

CPC分类号： B32B27/08 ,  B32B27/306 ,  B32B2307/42 ,  B32B2457/202 ,  B32B2551/00 ,  G02B5/3083 ,  Y10T428/10 ,  Y10T428/1036

摘要： An optical film including a transparent polymer film (b) and a birefringent layer (a) formed of a polymer and laminated above the transparent polymer film (b) is provided. The birefringent layer (a) and the transparent polymer film (b) satisfy the following formula (1), the birefringent layer (a) satisfies the following formulae (2) and (3), and the polymer forming the birefringent layer (a) has a weight-average molecular weight in the range between 10,000 and 400,000 inclusive. Δn(a)>Δn(b)×10  (1) 1

摘要翻译： 提供了一种包括透明聚合物膜（b）和由聚合物形成并层压在透明聚合物膜（b）上方的双折射层（a）的光学膜。 双折射层（a）和透明聚合物膜（b）满足下式（1），双折射层（a）满足下式（2）和（3），形成双折射层（a）的聚合物 重均分子量在10,000和400,000之间的范围内。 <？in-line-formula description =“在线公式”end =“lead”？> Deltan（a）> Deltan（b）x10（1）<？in-line-formula description =“In-line Formulas” end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> 1 <（nx-nz）/（nx-ny）（2） -formulae description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line formula”end =“lead”？> 0.0005 <= Deltan（a）<= 0.5 3）<？in-line-formula description =“In-line Formulas”end =“tail”？>该光学膜可以防止虹膜的发生，裂缝的发生和延迟的变化的发生。

公开(公告)号：US07428029B2

公开(公告)日：2008-09-23

申请号：US10522380

申请日：2003-07-29

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

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

IPC分类号： G02F1/1335

CPC分类号： G02B5/3016 ,  G02F1/133528

摘要： The present invention relates to an optical film that is excellent in optical properties and can be produced at low cost. In the optical film formed by laminating a transparent polymer film layer and a birefringent layer of a non-liquid crystalline polymer, the birefringent layer satisfies a condition represented by nx≧ny>nz and the in-plane retardation of the transparent polymer film layer is 50 nm or less. In the above formula, nx, ny and nz are the refraction indices in the X-, Y- and Z-axes directions of the birefringent layer, respectively. The X-axis direction is the axial direction in which the refraction index shows a maximum value in the in-plane direction of the birefringent layer, the Y-axis direction is the axial direction perpendicular to the X-axis direction in the plane, and the Z-axis direction is the thickness direction perpendicular to the X- and Y-axes directions.

摘要翻译： 本发明涉及光学性能优异且可以低成本制造的光学膜。 在通过层叠透明聚合物膜层和非液晶聚合物的双折射层而形成的光学膜中，双折射层满足由nx> = ny> nz表示的条件，并且透明聚合物膜层的面内相位差 为50nm以下。 在上述公式中，nx，ny和nz分别是双折射层的X，Y和Z轴方向上的折射率。 X轴方向是折射率在双折射层的面内方向上呈现最大值的轴向，Y轴方向为与该平面中的X轴方向垂直的轴向， Z轴方向是与X轴方向和Y轴方向垂直的厚度方向。

公开(公告)号：US07153547B2

公开(公告)日：2006-12-26

申请号：US10736978

申请日：2003-12-17

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

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

IPC分类号： G02F1/1335 ,  C09K19/00 ,  B32B27/36

CPC分类号： B32B27/08 ,  G02B5/3083 ,  Y10T428/10 ,  Y10T428/24942 ,  Y10T428/31507

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)≦30×10−8 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.

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的乘积满足数学式（1）：<？in-line-formula description =“In-line Formulas”end =“lead”？> Sigma（CnxWn）<= 30×10 -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，并且该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。

公开(公告)号：US20050099562A1

公开(公告)日：2005-05-12

申请号：US10504486

申请日：2003-02-18

申请人： Yuuichi Nishikouji ,  Shinichi Sasaki ,  Takashi Yamaoka ,  Nao Murakami ,  Hiroyuki Yoshimi ,  Masaki Hayashi

发明人： Yuuichi Nishikouji ,  Shinichi Sasaki ,  Takashi Yamaoka ,  Nao Murakami ,  Hiroyuki Yoshimi ,  Masaki Hayashi

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

CPC分类号： G02F1/133634 ,  G02B5/3016

摘要： The present invention provides a laminated retardation plate that shows an excellent viewing angle property when used in a liquid crystal display, and that can be decreased in thickness. The laminated retardation plate is formed by laminating an optically anisotropic layer (A) made of a polymer having an in-plane retardation of 20-300 nm and a ratio between a thickness direction retardation and the in-plane retardation of not less than 1.0, and an optically anisotropic layer (B) made of a non-liquid crystalline polymer such as polyimide having an in-plane retardation of not less than 3 nm and a ratio between a thickness direction retardation and the in-plane retardation of not less than 1.0. The thus obtained laminated retardation plate shows excellent optical properties, e.g., an in-plane retardation (Re) of 10 nm or more, and a difference between a thickness direction retardation and the in-plane retardation of 50 nm or more.

摘要翻译： 本发明提供一种层叠型延迟板，其在液晶显示器中使用时显示出优异的视角特性，并且可以减小厚度。 叠层相位差板是通过层叠由面内相位差为20〜300nm的聚合物构成的光学各向异性层（A），厚度方向延迟与面内延迟的比例为1.0以上， 和由面内相位差不小于3nm的非液晶聚合物如聚酰亚胺构成的光学各向异性层（B），厚度方向延迟与面内延迟的比例不小于1.0 。 由此获得的层叠延迟板显示出优异的光学特性，例如面内延迟（Re）为10nm以上，厚度方向延迟与面内延迟的差为50nm以上。