发明授权
- 专利标题: Silver paste
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申请号: US17417895申请日: 2019-11-28
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公开(公告)号: US11535767B2公开(公告)日: 2022-12-27
- 发明人: Kousuke Nishimura , Naoto Shindo , Hiroshi Mashima , Yuji Akimoto
- 申请人: SHOEI CHEMICAL INC.
- 申请人地址: JP Tokyo
- 专利权人: SHOEI CHEMICAL INC.
- 当前专利权人: SHOEI CHEMICAL INC.
- 当前专利权人地址: JP Tokyo
- 代理机构: Alleman Hall Creasman & Tuttle LLP
- 优先权: JPJP2018-242807 20181226
- 国际申请: PCT/JP2019/046482 WO 20191128
- 国际公布: WO2020/137331 WO 20200702
- 主分类号: C09D11/52
- IPC分类号: C09D11/52 ; B22F1/107 ; C09D11/033 ; C09D11/037 ; C09D11/14 ; H01B1/22
摘要:
The present invention provides a silver paste containing at least a silver powder, a binder resin, and an organic solvent, wherein the silver powder contains a first silver powder having a D50 of 3.50 to 7.50 μm and a second silver powder having a D50 of 0.80 to 2.00 μm, where D50 represents a 50% value of a volume-based cumulative fraction obtained by laser diffraction particle size distribution measurement; a copper content of the whole silver powder is 10 to 5000 ppm by mass; a copper content of the second silver powder is 80 ppm by mass or more; and the first silver powder contains substantially no copper. The present invention provides a silver paste containing a powder in a high concentration and excellent in printability, and provides a silver conductor film that has a high filling factor, a high film density, high electrical conductivity, and excellent migration resistance.
公开/授权文献
- US20220089894A1 SILVER PASTE 公开/授权日:2022-03-24
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