Patent ID: 6719876
Filing Date: 2004-04-13
Classification: C23C,H01J

Abstract:
In a plasma processing apparatus provided with an inductive coupled electrode for generating plasma in a vacuum processing chamber, the plasma processing apparatus wherein:said electrode is formed so that total length thereof is substantially equal to a wavelength of a supplied high frequency power, and is formed so that; one end of said electrode is grounded and another end thereof is connected to a high frequency power source for supplying said high frequency power, and a standing wave of one wavelength is produced along said electrode when said high frequency power source supplies said high frequency power to said electrode; and a node of said standing wave produced along said electrode is formed at a central portion of said electrode, and an antinode of said standing wave is formed on both portions respectively corresponding to a half portion of said electrode, which exist at both sides of said center point, wherein said electrode is formed to be U-shaped by having a bent-back portion at said central portion, each of the half portions of said electrode corresponds to a straight portion, both of the half portions are arranged in parallel, and a length of the half portion of said electrode is substantially equal to a half of the wavelength of said high frequency power, and the length of the half portion of said electrode is about one order of magnitude longer than a width between the half portions.