Patent ID: 7964473

Claim:
A method for use in the manufacturing of a semiconductor device, the method comprising; providing a first layer having an opening therein; forming a second layer on the first layer including within the opening and at a region outside the opening, wherein the opening is not completely filled after the second layer is formed; subsequently removing material of the second layer; monitoring the structure at the region outside the opening as material of the second layer is being removed, and generating in real time data representative of the structure; terminating the process of removing material of the second layer based on the data when the data reveals that the first layer disposed under the second layer at the region outside the opening is being removed by the process; and subsequently forming a third layer on the second layer to complete a burying of the opening, wherein the monitoring of the structure comprises sensing light reflecting from the structure, and the generating of data comprises generating data representative of the wavelength of light reflecting from an upper surface of the structure.