Patent ID: 6103079
Filing Date: 2000-08-15
Classification: C23C,H01J,Y10T

Abstract:
A sputtering deposition equipment comprising:a process chamber for processing sputtering deposition;a gate valve, coupled to the process chamber, and used to determine whether the sputtering deposition is preformed or not;a cryo-pump, coupled to the gate valve, used to vacuum the process chamber to form an inner pressure in the process chamber;a heater, coupled to the process chamber, and used to heat up the process chamber to allow a thermal reaction;an inner bellows line, coupled to the heater at a first end, and used to supply a low pressure gas from a second end of the inner bellows line;an outer bellows line enclosing at least a portion of the inner bellows line and a junction between the inner bellows line and the heater in order to form a sub-space between the inner bellows line and outer bellows line, wherein the sub-space is filled with a lighter gas having a higher pressure which is higher than the inner pressure; anda pressure meter, coupled to the outer bellows line and intruding into the sub-space so as to allow the higher pressure to be actually measured and monitored,wherein when microleakage of the inner pressure occurs, the higher pressure in the sub-space can increase the inner pressure over a threshold pressure, which can trigger a stop of sputtering deposition process, and when microleakage of the higher pressure occurs, a pressure of an environment of the equipment can change the higher pressure in the sub-space.