Patent ID: 6319371
Filing Date: 2001-11-20
Classification: C23C

Abstract:
A film forming apparatus, comprising:(a) an oxygen supply,(b) a controller,(c) a first film forming chamber through which a substrate passes, the first film forming chamber housing a sputtering apparatus for sputtering a SiO.sub.x or a TiO.sub.x adhesion film on the substrate and a moisture discharging means, the first film forming chamber being connected to the oxygen supply, the oxygen supply being linked to the controller,(d) a monitor chamber adjacent to the first film forming chamber comprising a means for measuring a transmittance of light through the adhesion layer formed on the substrate in the first film forming chamber, the means for measuring being connected to the controller for sending a signal indicative of the measured transmittance of light to the controller, the controller converting the signal indicative of the measured light transmittance into a value for ""x"", wherein, when the value for ""x"" is below a predetermined acceptable lower limit, the controller increases the flow of oxygen by the oxygen supply to the first film forming chamber, and when the value for ""x"" is above a predetermined acceptable upper limit, the controller decreases the flow of oxygen by the oxygen supply to the first film forming chamber.