公开(公告)号：US09988493B2

公开(公告)日：2018-06-05

申请号：US14741959

申请日：2015-06-17

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Chanjae Ahn ,  Sungwon Choi ,  Sungwoo Hong ,  Byunghee Sohn ,  Sun Jin Song ,  Kyeong-sik Ju

IPC: C08G73/00 ,  C08G73/14 ,  C08G73/10

CPC classification number: C08G73/14 ,  C08G73/1039

Abstract: A poly(amide-imide) copolymer including a structural unit represented by Chemical Formula 1; a structural unit represented by Chemical Formula 2, and/or an amic acid precursor structural unit which forms the structural unit represented by Chemical Formula 2 through imidization; and a structural unit represented by Chemical Formula 3, and/or an amic acid precursor structural unit which forms the structural unit represented by Chemical Formula 3 through imidization, wherein the poly(amide-imide) copolymer has a modulus of greater than or equal to about 5.5 giga Pascals after being cured, a yellowness index YI of less than or equal to about 3.5, and an increase in yellowness index ΔYI of less than or equal to about 0.7 after being exposed to ultraviolet light for 72 hours: wherein in Chemical Formulae 1 to 3, groups and variables are the same as described in the specification.

公开(公告)号：US10858482B2

公开(公告)日：2020-12-08

申请号：US14879287

申请日：2015-10-09

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Sung Woo Hong ,  Byung-hee Sohn ,  Sun Jin Song ,  Chanjae Ahn ,  Kyeong-sik Ju ,  Sungwon Choi

IPC: C08G73/22 ,  C08G73/10 ,  C08G73/14 ,  C08J5/18 ,  C09D179/08 ,  C09D179/04

Abstract: A composition for preparing poly(imide-benzoxazole) copolymer is described, where the copolymer include: a tetracarboxylic acid dianhydride represented by Chemical Formula 1, a diamine represented by Chemical Formula 2, and a diamine represented by Chemical Formula 3: wherein definitions of groups and variables in Chemical Formulae 1 to 3 are the same as described in the specification.

公开(公告)号：US10591761B2

公开(公告)日：2020-03-17

申请号：US15789695

申请日：2017-10-20

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Sang Soo Jee ,  Sun Jin Song ,  Chanjae Ahn ,  Sungwon Choi

IPC: C08G73/14 ,  G02F1/1333 ,  C09D183/06 ,  C08J7/04 ,  C08K5/5419 ,  C08L79/08

Abstract: A flexible plastic substrate includes a film including a poly(amide-imide) copolymer; and a hard coating layer disposed on a first surface of the film, wherein the hard coating layer includes a crosslinked siloxane copolymer, and wherein the flexible plastic substrate has pencil hardness of greater than or equal to 2H under a vertical load of 1 kilogram according to ASTM D3363, a total light transmittance of greater than or equal to about 89% in a wavelength region of 350 nanometers to 750 nanometers.

公开(公告)号：US11945199B2

公开(公告)日：2024-04-02

申请号：US18162801

申请日：2023-02-01

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Hyunjeong Jeon ,  A Ra Jo ,  Jungha Chae ,  Sun Jin Song ,  Boreum Jeong

IPC: B32B27/08 ,  B32B27/28

CPC classification number: B32B27/08 ,  B32B27/281 ,  B32B2250/03 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/412 ,  B32B2307/418 ,  B32B2457/20

Abstract: Disclosed are a laminated film including a light transmitting substrate; a hard coating layer; and an optical enhancement layer disposed between the light transmitting substrate and the hard coating layer or at a position facing the hard coating layer with the light transmitting substrate therebetween, wherein the light transmitting substrate includes a polyimide, a poly(amide-imide) copolymer, or a combination thereof, and the optical enhancement layer includes a copolymer comprising a polyimide, and a display device including the laminated film.

公开(公告)号：US11198762B2

公开(公告)日：2021-12-14

申请号：US16177937

申请日：2018-11-01

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Hyunjeong Jeon ,  Sun Jin Song ,  Sunghyun Han ,  Won Suk Chang

IPC: C08G73/10 ,  C08J5/18 ,  C09D179/08 ,  C08G73/14

Abstract: A polyimide that is a reaction product of a diamine represented by Chemical Formula 1, a diamine represented by Chemical Formula 2, and a tetracarboxylic dianhydride represented by Chemical Formula 3: wherein, in Chemical Formulae 1 to 3, L1, L2, Ra to Rf, m, R2, R10, R12, R13, n7, and n8 are the same as defined in the specification.

公开(公告)号：US11014342B2

公开(公告)日：2021-05-25

申请号：US16027870

申请日：2018-07-05

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Sun Jin Song ,  Seoung Jin Seo ,  Kyeong-sik Ju ,  Jungha Chae

IPC: B32B27/08 ,  B32B15/08 ,  G02B1/14 ,  B32B7/00 ,  B32B27/00 ,  B32B7/12 ,  C08G73/14 ,  G02F1/1333

Abstract: A laminated film including a first film; and a second film disposed on the first film, wherein a tensile modulus of the second film is greater than or equal to a tensile modulus of the first film, and a transmittance of the first film is greater than or equal to a transmittance of the second film, provided that at least one of the tensile modulus of the first film and the tensile modulus of the second film are not equal or the transmittance of the first film and the transmittance of the second film are not equal.

公开(公告)号：US11851540B2

公开(公告)日：2023-12-26

申请号：US16943166

申请日：2020-07-30

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Boreum Jeong ,  Chanjae Ahn ,  Hye Young Kong ,  Sun Jin Song ,  A Ra Jo ,  Kyeong-sik Ju

IPC: B32B27/08 ,  B32B27/34 ,  B32B27/28 ,  B32B7/023 ,  C08J5/18

CPC classification number: C08J5/18 ,  B32B7/023 ,  B32B27/08 ,  B32B27/281 ,  B32B27/34 ,  B32B2250/02 ,  B32B2250/24 ,  B32B2255/10 ,  B32B2270/00 ,  B32B2307/418 ,  C08J2379/08

Abstract: A laminated film which includes a first layer including a poly(amide-imide) copolymer, and a second layer laminated on at least one surface of the first layer. The second layer includes a poly(amide-imide) copolymer, polyimide, or a combination thereof, which has an amide content of less than or equal to about 30 mol %. The poly(amide-imide) copolymer included in the first layer has a weight average molecular weight of about 30,000 grams/mole to about 200,000 grams/mole, and the polyimide, the poly(amide-imide) copolymer, or the combination thereof, of the second layer has a weight average molecular weight of about 10,000 grams/mole to about 50,000 grams/mole, and the composition for preparing the laminated film.

公开(公告)号：US11602924B2

公开(公告)日：2023-03-14

申请号：US16594533

申请日：2019-10-07

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Hyunjeong Jeon ,  A Ra Jo ,  Jungha Chae ,  Sun Jin Song ,  Boreum Jeong

IPC: B32B27/08 ,  B32B27/28

Abstract: Disclosed are a laminated film including a light transmitting substrate; a hard coating layer; and an optical enhancement layer disposed between the light transmitting substrate and the hard coating layer or at a position facing the hard coating layer with the light transmitting substrate therebetween, wherein the light transmitting substrate includes a polyimide, a poly(amide-imide) copolymer, or a combination thereof, and the optical enhancement layer includes a copolymer comprising a polyimide, and a display device including the laminated film.

公开(公告)号：US09434098B2

公开(公告)日：2016-09-06

申请号：US14571475

申请日：2014-12-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung Won Choi ,  Jae Wook Nam ,  Byung Hee Sohn ,  Sun Jin Song ,  Chan Jae Ahn ,  Semi Lee ,  Sung Woo Hong

IPC: B29C47/14 ,  B29C47/92 ,  B29L7/00 ,  B29C47/00

CPC classification number: B29C47/14 ,  B29C47/0021 ,  B29C47/92 ,  B29C2947/926 ,  B29C2947/92904 ,  B29L2007/008

Abstract: A slot die includes a material distribution chamber configured to distribute a casting solution supplied to the material distribution chamber, and a lip in which a slot including an expansion portion is defined and through which the casting solution distributed in the material distribution chamber is discharged, where a width of the expansion portion taken in a first direction is expanded from one side of the expansion portion to a lip end facing the one side and the one side of the expansion portion is apart from the lip end by a predetermined length taken along a second direction which is perpendicular to the first direction and substantially parallel to a flow direction of the casting solution.

Abstract translation: 狭槽模具包括配置成分配供给到材料分配室的铸造溶液的材料分配室，以及限定了包括膨胀部的槽的唇部，分配在材料分配室内的铸造溶液通过该排出排出， 沿着第一方向截取的膨胀部分的宽度从膨胀部分的一侧膨胀到面向一侧的唇形端部，并且膨胀部分的一侧与唇缘端部沿第二方向分开预定长度 方向，其垂直于第一方向并且基本上平行于铸造溶液的流动方向。

公开(公告)号：US11926127B2

公开(公告)日：2024-03-12

申请号：US16929382

申请日：2020-07-15

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  SAMSUNG SDI CO., LTD.

Inventor： Chanjae Ahn ,  Sun Jin Song ,  Won Suk Chang ,  Boreum Jeong ,  A Ra Jo ,  Kyeong-Sik Ju ,  Sungwon Choi

IPC: B32B27/34 ,  B32B27/08 ,  B32B27/28 ,  C08G69/26 ,  C08G69/42 ,  C08J7/04 ,  C08J7/046 ,  G02B1/14

CPC classification number: B32B27/34 ,  B32B27/08 ,  B32B27/283 ,  C08G69/265 ,  C08G69/42 ,  C08J7/0427 ,  C08J7/046 ,  G02B1/14 ,  B32B2307/412 ,  B32B2307/536 ,  B32B2457/20 ,  C08J2377/06 ,  C08J2483/04

Abstract: Disclosed is a window film for a display device including a light transmitting substrate including a polyamide including a structural unit represented by Chemical Formula 1 and a structural unit represented by Chemical Formula 2, and a hard coating layer laminated on one surface of the light transmitting substrate:






in Chemical Formula 1 and Chemical Formula 2, each of A1, A2, B, and D is the same as defined in the detailed description.