发明名称 |
Electrostatic chuck |
摘要 |
An electrostatic chuck includes: a ceramic substrate; a ceramic dielectric body provided on a top side of the ceramic substrate and having a first major surface where a processing target substrate is to be mounted; and an electrode provided between the ceramic substrate and the ceramic dielectric body. A material of the ceramic dielectric body is a ceramic sintered body. A plurality of protrusions and a groove for supplying a gas are provided on the first major surface of the ceramic dielectric body. A through hole is provided in a bottom face of the groove, the through hole penetrating to a second major surface of the ceramic substrate on a side opposite to the first major surface. A distance between the electrode and the groove is greater than or equal to a distance between the electrode and the first major surface. |
申请公布号 |
US8848335(B2) |
申请公布日期 |
2014.09.30 |
申请号 |
US201113635778 |
申请日期 |
2011.03.23 |
申请人 |
Toto Ltd. |
发明人 |
Hori Hiroaki;Itakura Ikuo;Anada Kazuki |
分类号 |
H01T23/00;H01L21/683 |
主分类号 |
H01T23/00 |
代理机构 |
Carrier Blackman & Associates, P.C. |
代理人 |
Carrier Blackman & Associates, P.C. ;Carrier Joseph P.;Blackman William D. |
主权项 |
1. An electrostatic chuck comprising:
a ceramic substrate; a ceramic dielectric body provided on a top side of the ceramic substrate and having a first major surface where a processing target substrate is to be mounted; and an electrode provided between the ceramic substrate and the ceramic dielectric body, a material of the ceramic dielectric body being a ceramic sintered body, a plurality of protrusions and a groove for supplying a gas being provided on the first major surface of the ceramic dielectric body, a through hole being provided in a bottom face of the groove, the through hole penetrating to a second major surface of the ceramic substrate on a side opposite to the first major surface, a distance between the electrode and the groove being greater than or equal to a distance between the electrode and the first major surface, and a depth from the first major surface to the bottom face of the groove is less than or equal to a depth from the first major surface to a major surface of the electrode. |
地址 |
Fukuoka JP |