The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2000
Filed:
Sep. 23, 1997
Masataka Hatta, Yamanashi-ken, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
A temperature control apparatus for a sample susceptor is described, the temperature control apparatus is easy to maintain, which can set a temperature in a wide range from a low temperature to a high temperature, which is compact and which does not require a special processing for disposing of a cooling medium. A temperature control apparatus for a sample susceptor has a cooling unit for cooling a sample susceptor on which a wafer W is mounted, an electric heater for heating the sample susceptor, a temperature detecting unit for detecting the temperature of the sample susceptor, and a temperature adjusting unit for controlling the cooling unit and the heating unit based on a detection signal of the temperature detecting unit. The cooling unit has an electro-pneumatic regulator for generating a high-pressure gas of a predetermined pressure from a received gas and supplying the generated high-pressure gas by an electric control, and a vortex tube for generating a low-temperature gas based on a vortex flow generated by receiving a high-pressure gas in the tangent direction within the tube and for supplying this low-temperature gas, so that the low-temperature gas is supplied from the vortex tube to a gas flow path formed within the sample susceptor.