| 发明名称 |
PIEZOELECTRIC ELEMENT INCLUDING FLUORORESIN FILM |
| 摘要 |
There is provided a piezoelectric element, including: a porous fluororesin film made of a first fluororesin; and a nonporous fluororesin layer stacked on at least one surface of the porous fluororesin film and made of a second fluororesin, wherein the first fluororesin is different in type from the second fluororesin, and when 50 pores are selected in descending order from a pore having the longest thickness-direction length, of pores present in a cut surface of the porous fluororesin film in a thickness direction, an average value A50 of thickness-direction lengths of the 50 pores is 3 μm or smaller. |
| 申请公布号 |
US2015015120(A1) |
申请公布日期 |
2015.01.15 |
| 申请号 |
US201314376812 |
申请日期 |
2013.01.28 |
| 申请人 |
Sumitomo Electric Industries, Ltd. ;A SCHOOL CORPORATION KANSAI UNIVERSITY |
发明人 |
Kaimori Shingo;Sugawara Jun;Tajitsu Yoshiro |
| 分类号 |
H01L41/193;C08J9/36 |
主分类号 |
H01L41/193 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A piezoelectric element, comprising: a porous fluororesin film made of a first fluororesin; and a nonporous fluororesin layer stacked on at least one surface of said porous fluororesin film and made of a second fluororesin, wherein
said first fluororesin is different in type from said second fluororesin, and when 50 pores are selected in descending order from a pore having the longest thickness-direction length, of pores present in a cut surface of said porous fluororesin film in a thickness direction, an average value A50 of thickness-direction lengths of the 50 pores is 3 μm or smaller. |
| 地址 |
Osaka-shi, Osaka JP |
