Patent ID: 7863204

Claim:
A substrate processing apparatus comprising: a processing chamber where wafers are accommodated and processed; and a heating module equipped with heating elements and thermal insulator materials for heating the wafers with the heating elements in the processing chamber, wherein each of the thermal insulator materials is arranged to have a supporting portion thereof provided for supporting the heating element, each of the heating elements is arranged of a laterally extending belt-like shape when opened, which has a slit cut on a band plate thus forming a zigzag shape and to be supported at the upper end portion along the lengthwise direction of the slit by the supporting portion of the thermal insulator material and to be extended downwardly so that a space is provided between the inner side of the thermal insulator material and the heating element, the thermal insulator material also has a projection provided on the inner side thereof to extend at an intermediate of the heating element towards the processing chamber so as to come adjacent to or in direct contact with the heating element, and at least a pin provided with an enlarged portion is disposed to extend at the intermediate of the heating element across the slit and the thermal insulator material with its enlarged portion sized greater in the width than the slit and placed adjacent to or in direct contact with the heating element at the processing chamber side of heating element.