公开(公告)号：US20230395398A1

公开(公告)日：2023-12-07

申请号：US18450543

申请日：2023-08-16

Applicant: AGC Inc.

Inventor： Seigo KOTERA ,  Satoshi TAKENAKA ,  Tetsuya HASEGAWA ,  Takatoshi YAOITA ,  Masayuki MORINO ,  Mio TOKUNAGA ,  Yuki HAYASAKA

IPC: H01L21/56 ,  H01L21/306

CPC classification number: H01L21/566 ,  H01L21/306

Abstract: The present invention relates to a film including at least a substrate and an antistatic layer, in which a ratio of a peeled area when a tape peeling test is performed under the following conditions after 300% uniaxial stretching at 25° C. is less than 5%, the tape peeling test is that: Cellotape® is pressure-bonded to a surface of the film on an antistatic layer side using a roller through 5 reciprocations with a load of 4 kg, and the Cellotape® is peeled off at a speed of 100 m/min in a direction of 180° with respect to the film within 5 minutes, thereby obtaining a ratio of a peeled area of the film to an area of an adhesive portion of the Cellotape®.

公开(公告)号：US20220118742A1

公开(公告)日：2022-04-21

申请号：US17562167

申请日：2021-12-27

Applicant: AGC Inc.

Inventor： Wataru KASAI ,  Yuya HORIGUCHI ,  Seigo KOTERA ,  Tomoya HOSODA

IPC: B32B15/082 ,  B32B27/32 ,  B32B27/30 ,  C08J5/18

Abstract: As an exemplary configuration, a long film is configured by thermomeltable polymers including a first unit based on tetrafluoroethylene and a second unit based on perfluoro (alkyl vinyl ether), including spherulites of the thermomeltable polymers, wherein radius of each spherulite is 10 μm or less. As another exemplary configuration, a long film is configured by tetrafluoroethylene polymers having a melt flow rate within a range of 5 to 40 g/10 min. The long film is heated at 180° C. for 30 minutes so as to measure the thermal expansion rate, and when letting thermal expansion rate in a first direction, which extends at a 45-degree angle to a melt flow direction be A, and thermal expansion rate in a second direction orthogonal to the first direction be B, A and B are respectively within the range of −2 to +1%, and |A−B| is 1% or less.

公开(公告)号：US20200215728A1

公开(公告)日：2020-07-09

申请号：US16822110

申请日：2020-03-18

Applicant: AGC Inc.

Inventor： Seigo KOTERA

IPC: B29C33/68 ,  B32B27/08 ,  B32B27/34 ,  B32B27/32 ,  B29C45/14 ,  H01L21/56

Abstract: To provide a film capable of suppressing both of formation of wrinkles when a release film is suction-attached to a cavity surface in compression molding, and formation of wrinkles when the cavity bottom surface to which the release film has been suction-attached is raised; and a method for producing a semiconductor element by using said film. A laminated film 1 comprises a layer 3 of shrinkable film, of which the storage elastic modulus E′ at 180° C. is at least 70 MPa, and the thermal shrinkage in 30 minutes at 180° C., with reference to 20° C., in each of the machine direction (MD) and the transverse direction (TD), is at least 3%, and a fluororesin layer 5 present on one side or both sides of the shrinkable film layer 3.

公开(公告)号：US20240199829A1

公开(公告)日：2024-06-20

申请号：US18588831

申请日：2024-02-27

Applicant: AGC Inc.

Inventor： Seigo KOTERA ,  Wataru KASAI ,  Junetsu NAKAMURA ,  Takatoshi YAOITA

IPC: C08J5/18 ,  B29C71/02 ,  B29K27/18 ,  B29K105/00 ,  C08F214/26 ,  C08J5/12 ,  H05K1/05 ,  H05K3/02

CPC classification number: C08J5/18 ,  B29C71/02 ,  C08F214/265 ,  C08J5/121 ,  H05K1/056 ,  H05K3/022 ,  B29C2071/022 ,  B29K2027/18 ,  B29K2105/0085 ,  C08F2800/10 ,  C08J2327/18 ,  H05K2201/015

Abstract: To provide a dielectric film which is excellent in dielectric properties and stability in the electric corrosion test and which is suitable for producing a high-precision printed board.
A roll film comprising a melt-processable fluororesin as the main component and having a thickness of from 1 to 100 μm, the dimensional change rate of which is less than 1.0%, in terms of an absolute value, in each of MD and TD, when heated at 150° C. for 30 minutes and then cooled to 25° C., based on the dimension at 25° C.

公开(公告)号：US20230348759A1

公开(公告)日：2023-11-02

申请号：US18348406

申请日：2023-07-07

Applicant: AGC Inc.

Inventor： Satoshi TAKENAKA ,  Seigo KOTERA ,  Tetsuya HASEGAWA

IPC: C09J7/40 ,  H01L21/56

CPC classification number: C09J7/401 ,  H01L21/566 ,  C09J2203/326

Abstract: A film including a substrate, a base layer, and an adhesive layer in this order, in which the base layer includes a reaction cured product of a (meth)acrylic polymer and a curing agent, and the base layer has an elongation rate of 90% or more as measured by a tensile test at 25° C. and a speed of 100 mm/min and determined by the following formula, Elongation rate (%)=(elongation (mm) at break)×100/(distance (mm) between grippers before applying tension).