Patent ID: 7011712

Claim:
A fixing structure of a ceramic susceptor, said fixing structure comprising: a ceramic susceptor to be heated, said ceramic susceptor having a mounting face and a back face, a ceramic supporting member joined with said back face of said susceptor and a chamber wall fixing said supporting member, wherein said ceramic supporting member comprises an outer wall surface, a joining face joined with said ceramic susceptor, an end face opposing said joining face, and a curved part formed between said outer wall surface of said ceramic supporting member and said back face of said susceptor, wherein said curved part has a radius of curvature R in a range of 4 mm to 25 mm in the longitudinal direction of said ceramic supporting member, wherein said curved part is concave with respect to said outer wall surface of said ceramic supporting member, and wherein a center of curvature of said curved part is located outside said outerwall surface of said ceramic supporting member; and wherein a width D 1 of said joining face at an outer profile thereof is less than width D 2 of said end face at an outer profile thereof.