公开(公告)号：US20240177893A1

公开(公告)日：2024-05-30

申请号：US18311723

申请日：2023-05-03

申请人： Polytronics Technology Corp.

发明人： CHENG-YU TUNG ,  Chia-Yuan Lee ,  HSIU-CHE YEN ,  CHEN-NAN LIU ,  YUNG-HSIEN CHANG ,  Yao-Te Chang ,  FU-HUA CHU ,  Takashi Hasunuma

IPC分类号： H01C7/02 ,  H01C1/14

CPC分类号： H01C7/027 ,  H01C1/1406

摘要： An over-current protection device includes a heat-sensitive layer and an electrode layer. The electrode layer includes a top metal layer and a bottom metal layer, and the heat-sensitive layer attached therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a conductive filler. The polymer matrix includes a polyolefin-based homopolymer and a polyolefin-based copolymer. The polyolefin-based homopolymer has a first coefficient of thermal expansion (CTE), and the polyolefin-based copolymer has a second CTE lower than the first CTE. The polyolefin-based homopolymer and the polyolefin-based copolymer together form an interpenetrating polymer network (IPN).

公开(公告)号：US20230395287A1

公开(公告)日：2023-12-07

申请号：US18150729

申请日：2023-01-05

申请人： Polytronics Technology Corp.

发明人： CHEN-NAN LIU ,  YUNG-HSIEN CHANG ,  HSIU-CHE YEN ,  CHENG-YU TUNG ,  CHIA-YUAN LEE ,  YU-CHIEH FU ,  YAO-TE CHANG ,  FU-HUA CHU

IPC分类号： H01C7/02 ,  H01C1/14

CPC分类号： H01C7/021 ,  H01C1/1406

摘要： An over-current protection device comprises first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, a conductive filler and a titanium-containing inner filler. The polymer matrix has a fluorine-free polyolefin-based polymer. The titanium-containing inner filler has a compound represented by a general formula of MTiO3, wherein the M represents transition metal or alkaline earth metal. The total volume of the PTC material layer is calculated as 100%, and the titanium-containing inner filler accounts for 1-9% by volume of the PTC material layer.

公开(公告)号：US20240145133A1

公开(公告)日：2024-05-02

申请号：US18295919

申请日：2023-04-05

申请人： Polytronics Technology Corp.

发明人： CHEN-NAN LIU ,  YUNG-HSIEN CHANG ,  CHENG-YU TUNG ,  HSIU-CHE YEN ,  Chia-Yuan LEE ,  Yao-Te CHANG ,  FU-HUA CHU

IPC分类号： H01C7/02 ,  H01C7/13

CPC分类号： H01C7/028 ,  H01C7/021 ,  H01C7/13

摘要： An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a first conductive filler. The polymer matrix includes a polyolefin-based polymer and a fluoropolymer. The fluoropolymer has a melt flow index higher than 1.9 g/10 min, and the polyolefin-based polymer and the fluoropolymer together form an interpenetrating polymer network (IPN). The first conductive filler has a metal-ceramic compound dispersed in the polymer matrix.

公开(公告)号：US20240127988A1

公开(公告)日：2024-04-18

申请号：US18177681

申请日：2023-03-02

申请人： Polytronics Technology Corp.

发明人： HSIU-CHE YEN ,  YUNG-HSIEN CHANG ,  CHENG-YU TUNG ,  Chia-Yuan Lee ,  CHEN-NAN LIU ,  Yao-Te Chang ,  FU-HUA CHU

IPC分类号： H01C7/02

CPC分类号： H01C7/021 ,  H01C7/028

摘要： An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as α-PVDF, β-PVDF and γ-PVDF. The total amount of α-PVDF, β-PVDF and γ-PVDF is calculated as 100%, and the amount of α-PVDF accounts for 48% to 55%. The conductive filler has a metal-ceramic compound.

公开(公告)号：US20240145132A1

公开(公告)日：2024-05-02

申请号：US18185283

申请日：2023-03-16

申请人： Polytronics Technology Corp.

发明人： CHENG-YU TUNG ,  CHEN-NAN LIU ,  Chia-Yuan Lee ,  HSIU-CHE YEN ,  YUNG-HSIEN CHANG ,  Yao-Te Chang ,  FU-HUA CHU

IPC分类号： H01C7/02

CPC分类号： H01C7/021 ,  H01C7/028

摘要： An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, and a conductive filler. The polymer matrix has a fluoropolymer. The total volume of the PTC material layer is calculated as 100%, and the fluoropolymer accounts for 47-62% by volume of the PTC material layer. The fluoropolymer has a melt viscosity higher than 3000 Pa·s.

公开(公告)号：US20240127989A1

公开(公告)日：2024-04-18

申请号：US18159488

申请日：2023-01-25

申请人： Polytronics Technology Corp.

发明人： CHIA-YUAN LEE ,  CHENG-YU TUNG ,  HSIU-CHE YEN ,  CHEN-NAN LIU ,  YUNG-HSIEN CHANG ,  YAO-TE CHANG ,  FU-HUA CHU

IPC分类号： H01C7/02 ,  H01C7/00

CPC分类号： H01C7/028 ,  H01C7/006 ,  H01C7/021

摘要： An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as α-PVDF, β-PVDF and γ-PVDF. The total amount of α-PVDF, β-PVDF and γ-PVDF is calculated as 100%, and the amount of γ-PVDF accounts for 33% to 42%.