Patent ID: 8790007
Filing Date: 2014-07-29
Classification: G01K,H01L

Abstract:
1. A semiconductor manufacturing apparatus member comprising: a disk-shaped ceramic plate including a wafer-placing surface; a thermocouple conduit disposed in the ceramic plate and extends from a radially central portion of the ceramic plate to a position which is spaced from an outer peripheral surface of the ceramic plate; a thermocouple guide including a guide hole extending from a surface of the ceramic plate opposite to the wafer-placing surface and is connected to a portion of the thermocouple conduit at the radially central portion of the ceramic plate; and a thermocouple extending through the guide hole and the thermocouple conduit, the thermocouple being disposed so that a temperature sensing portion thereof is in contact with a closed end of the thermocouple conduit, the closed end being located at the position which is spaced from the outer peripheral surface of the ceramic plate, wherein the guide hole is inclined with respect to a direction in which the thermocouple conduit extends so that the guide hole makes an obtuse angle with the thermocouple conduit, or the guide hole extends in a direction closer to the direction in which the thermocouple conduit extends with decreasing distance of the guide hole from the thermocouple conduit, the ceramic plate includes a pair of thin plates that are surface-bonded to each other, and the thermocouple conduit is formed by a radial passage groove formed in a bonding surface of at least one of the pair of thin plates.