| 发明名称 | Quartz crystal device and method for fabricating the same | ||
| 摘要 | A surface mount type quartz crystal device includes a quartz crystal vibrating piece and a base plate. The quartz crystal vibrating piece is configured to vibrate at a predetermined frequency. The base plate is made of a crystal or a glass. The base plate includes an external electrode disposed on a bottom surface of the base plate to mount the quartz crystal device. The quartz crystal vibrating piece is placed on an opposite surface of the bottom face. The external electrode includes a metal film formed on a surface of the base plate by sputtering, and an electroless plating film formed on a surface of the metal film by electroless plating. The electroless plating film includes a nickel layer including lead and bismuth. | ||
| 申请公布号 | US9614493(B2) | 申请公布日期 | 2017.04.04 |
| 申请号 | US201414291001 | 申请日期 | 2014.05.30 |
| 申请人 | NIHON DEMPA KOGYO CO., LTD. | 发明人 | Hayasaka Taichi;Mizusawa Shuichi |
| 分类号 | H01L41/047;H03H9/10 | 主分类号 | H01L41/047 |
| 代理机构 | Jianq Chyun IP Office | 代理人 | Jianq Chyun IP Office |
| 主权项 | 1. A quartz crystal device which is in surface mount type, and the quartz crystal device comprising: a quartz crystal vibrating piece, configured to vibrate at a predetermined frequency; and a base plate made of a crystal or a glass, the base plate including an external electrode disposed on a bottom surface of the base plate to mount the quartz crystal device, the quartz crystal vibrating piece being placed on an opposite surface of the bottom face, wherein the external electrode includes a metal film formed on a surface of the base plate by sputtering, and an electroless plating film formed on a surface of the metal film by electroless plating, and the electroless plating film includes a nickel layer, and the nickel layer including lead and bismuth. | ||
| 地址 | Tokyo JP | ||