发明授权
- 专利标题: High-dielectric sheet, a printed circuit board having the high-dielectric sheet and production methods thereof
- 专利标题(中): 高电介质片,具有高电介质片的印刷电路板及其制造方法
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申请号: US13175683申请日: 2011-07-01
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公开(公告)号: US08837160B2公开(公告)日: 2014-09-16
- 发明人: Takashi Kariya , Hironori Tanaka
- 申请人: Takashi Kariya , Hironori Tanaka
- 申请人地址: JP Ogaki-shi
- 专利权人: Ibiden Co., Ltd.
- 当前专利权人: Ibiden Co., Ltd.
- 当前专利权人地址: JP Ogaki-shi
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2005-300319 20051014
- 主分类号: H05K1/16
- IPC分类号: H05K1/16 ; H01L21/48 ; H01L23/50 ; H01L23/498 ; H05K3/38 ; H05K3/46
摘要:
A method of producing a capacitor for a printed circuit board includes producing high-dielectric sheets and selecting ones of the high-dielectric sheets, which are substantially free from a defect after the heat process. Each of the high-dielectric sheets is produced by providing a first electrode, forming a first sputter film on the first electrode, forming an intermediate layer on the first sputter film by calcining a sol-gel film, forming a second sputter film on the intermediate layer, and providing a second electrode on the second sputter film. The high-dielectric sheets are subjected to a heat process in which the high-dielectric sheets are subjected to a first temperature at least once and a second temperature higher than the first temperature at least once.
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