Patent ID: 6470144
Filing Date: 2002-10-22
Classification: C23C

Abstract:
A vaporizer for use with a CVD apparatus, comprised of:a material introducing tube commonly coupled to sources of a solution of material for a CVD film and a gas carrying the solution, respectively and carrying a mixture of the material and gas; a vaporization chamber connected to said material introducing tube, vaporizing said material introduced through said material introducing tube; a cooling member contacting said material introducing tube for cooling that portion of said material introducing tube adjacent to said vaporization chamber, wherein the cooling member includes a heat sink formed to transfer heat from said portion of the material introducing tube adjacent to said vaporization chamber; a heat transferring member provided around said portion of the material introducing tube adjacent to said vaporization chamber, wherein said cooling member is provided in contact with said heat transferring member, and the heat transferring member is in contact with that portion of the material introducing tube that is adjacent to the vaporization chamber, and the heat transferring member has an annular shape such that it surrounds the periphery of the portion of the material introducing tube adjacent to said vaporization chamber; and said heat sink connected to an outer circumferential portion of the heat transferring member.