-
公开(公告)号：US20230241829A1
公开(公告)日：2023-08-03
申请号：US18171661
申请日：2023-02-21
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA , Hironari SUDEJI , Kensaku FUJII
IPC: B29C48/305 , B29D11/00 , C08F297/02 , C08J5/18 , G02B5/30 , B29C48/08
CPC classification number: B29C48/305 , B29C48/08 , B29D11/00788 , C08F297/02 , C08J5/18 , G02B5/3083 , B29K2096/04
Abstract: A method for producing a phase difference film is provided. The phase difference film includes an orientation layer formed of a resin C having a negative intrinsic birefringence value. The resin C contains a block copolymer having a block (A) including as a main component a polymerization unit A having a negative intrinsic birefringence value and a block (B) including as a main component a polymerization unit B, and a weight fraction of the block (A) therein being 50% by weight or more and 90% by weight or less. The phase difference film has an NZ factor of greater than 0 and smaller than 1. The method comprising: forming a single layer film of the resin C; and causing phase separation of the resin C in the film, which includes a step of applying to the film a stress along a thickness direction thereof.
-
公开(公告)号：US20210032396A1
公开(公告)日：2021-02-04
申请号：US16981693
申请日：2019-03-18
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA , Hironari SUDEJI , Kensaku FUJII , Yusuke YASU , Hiroya NISHIOKA
IPC: C08F297/04 , C08J5/18 , B29C55/06 , G02B1/04 , G02B5/30 , B29C48/88 , B29C48/00 , B29K25/00 , B29K96/04 , B29K105/00
Abstract: A phase difference film composed of a resin C containing a copolymer P including a polymerization unit A and a polymerization unit B, the phase difference film including a lamellar phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the formulae (1A): f(A)>0.5 and (2):D(A)>D(B), or the formulae (1B): f(B)>0.5 and (2). f(A) represents a total weight ratio of the polymerization unit A in the copolymer P, f(B) represents a total weight ratio of the polymerization unit B in the copolymer P, D(A)=ReA(450)/ReA(550), D(B)=ReB(450)/ReB(550), and ReA(450), ReA(550), ReB(450) and ReB(550) are as defined in the description.
-
公开(公告)号：US20200183067A1
公开(公告)日：2020-06-11
申请号：US16615586
申请日：2018-05-18
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA
Abstract: A phase difference film consisting of a resin C contains a copolymer P containing a polymerization unit A and a polymerization unit B, the phase difference film including a phase separation structure that exhibits a structural birefringence, the phase separation structure including a phase including as a main component the polymerization unit A and another phase including as a main component the polymerization unit B, and the phase difference film having an NZ factor of greater than 0 and smaller than 1; and a production method therefor. Preferably, the phase separation structure has a form of any of lamella, cylinder and spheroid, and the distance between phases in the phase separation structure is 200 nm or less.
-
公开(公告)号：US20200209452A1
公开(公告)日：2020-07-02
申请号：US16618143
申请日：2018-05-18
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA , Hironari SUDEJI , Kensaku FUJII
IPC: G02B5/30 , C08F297/02 , C08J5/18 , B29D11/00
Abstract: A phase difference film including an orientation layer formed of a resin C having a negative intrinsic birefringence value, wherein the resin C contains a block copolymer having a block (A) including as a main component a polymerization unit A having a negative intrinsic birefringence value and a block (B) including as a main component a polymerization unit B, and a weight fraction of the block (A) therein being 50% by weight or more and 90% by weight or less, and the phase difference film has an NZ factor of greater than 0 and smaller than 1; and the production method thereof. Preferably, in the orientation layer, the resin C exhibits a phase separation structure, and a distance between phases in the phase separation structure is 200 nm or less.
-
Patent Agency Ranking
公开(公告)号：US20230202090A1
公开(公告)日：2023-06-29
申请号：US18172312
申请日：2023-02-22
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA
IPC: B29C48/305 , B29C48/00 , B29C55/02 , C08J5/18 , C08L53/02 , G02B1/04 , G02B5/30 , G02F1/13363 , B29C48/08 , B29C48/40 , B29C48/88
CPC classification number: B29C48/305 , B29C48/0018 , B29C55/02 , C08J5/18 , C08L53/02 , G02B1/04 , G02B5/3083 , G02F1/13363 , B29C48/08 , B29C48/40 , B29C48/9135 , C09K2323/03
Abstract: A method for producing a phase difference film is provided. The phase difference film consisting of a resin C contains a copolymer P containing a polymerization unit A and a polymerization unit B, and includes a phase separation structure that exhibits a structural birefringence. The phase separation structure includes a phase including as a main component the polymerization unit A and another phase including as a main component the polymerization unit B. The phase difference film has an NZ factor of greater than 0 and smaller than 1. The method comprises: forming a single layer film of a resin C; and causing phase separation of the resin C in the film, which includes a step of applying to the film a stress along a thickness direction thereof.
-
公开(公告)号：US20210009744A1
公开(公告)日：2021-01-14
申请号：US16981694
申请日：2019-03-18
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA , Hironari SUDEJI , Kensaku FUJII , Yusuke YASU , Hiroya NISHIOKA
Abstract: A phase difference film composed of a resin containing a copolymer including polymerization units A and B, the phase difference film including a cylindrical phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the following condition (1) or (2). Condition (1): D(A)>D(B) and f(B)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are parallel to each other. Condition (2): D(A)>D(B) and f(A)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are orthogonal to each other.
-
公开(公告)号：US20200255573A1
公开(公告)日：2020-08-13
申请号：US16617116
申请日：2018-05-18
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA
Abstract: A phase difference film solely consisting essentially of a single species of copolymer P containing a polymerization unit A and a polymerization unit B, the phase difference film having a phase separation structure that exhibits a structural birefringence, and the phase difference film having an NZ factor of greater than 0 and smaller than 1; and the production method therefor. Preferably, the phase separation structure has a form of any of lamella, cylinder and spheroid, and the distance between phases in the phase separation structure is 200 nm or less.
-
8.发明申请公开(公告)号：US20190152131A1
公开(公告)日：2019-05-23
申请号：US16076061
申请日：2017-02-28
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA
Abstract: A method for producing a stretched film including the steps of: stretching a long-length multilayer film (D) including a pre-stretch film (A) formed of a thermoplastic resin, a shrinkable film (B) having a shrinkage ratio in a lengthwise direction of the film under conditions of 140° C. and 60 seconds in the air of 10% or more and 40% or less, a shrinkage ratio in the widthwise direction thereof of 5% or less, and an adhesion layer (C) bonding the pre-stretch film (A) to the shrinkable film (B), at a stretching ratio of less than 1.5 times in a direction of 45°±15° with respect to the widthwise direction of the multilayer film (D), and peeling the shrinkable film (B) and the adhesion layer (C).
-
公开(公告)号：US20150192722A1
公开(公告)日：2015-07-09
申请号：US14663088
申请日：2015-03-19
Applicant: ZEON CORPORATION
Inventor： Takeshi ASADA
IPC: G02B5/30 , C08J5/18 , G02F1/1335 , B29C55/04 , G02F1/13363
CPC classification number: G02B5/3083 , B29C55/045 , B32B2457/202 , C08J5/18 , C08J2345/00 , G02B5/3033 , G02B5/305 , G02F1/133528 , G02F1/13363 , G02F2001/133541 , G02F2001/133638 , G02F2203/02 , Y10T428/24479
Abstract: A lengthy stretched film made of a thermoplastic resin, having, over the width direction of at least 1300 mm, a value of an orientation angle θ to a take-up direction in a range of 40° to 50° and fluctuation thereof of 1.0° or less, and a value of an average Nz coefficient in a range of 1.3 to 2.0 and fluctuation thereof of 0.10 or less. A lengthy circularly polarizing plate constituted by laminating the lengthy stretched film with a lengthy polarizer. A reflective display type liquid crystal display device provided with the circularly polarizing plate constituted by trimming the lengthy circularly polarizing plate to a desired size.
Abstract translation: 一种由热塑性树脂制成的长延伸膜，其宽度方向至少为1300mm，取向角度和角度值; 在40°〜50°范围内的卷取方向和1.0°以下的波动，平均Nz系数的值在1.3〜2.0的范围内，其波动为0.10以下。 一种长圆形偏光板，其通过将长时间的拉伸膜与长的偏振片层压而构成。 一种反射显示型液晶显示装置，其具有通过将长圆形偏光板修整成所需尺寸而构成的圆偏振片。
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.023 seconds)
