Patent ID: 9245808
Filing Date: 2016-01-26
CPC Classification: G01B,H01L,H02S,Y02E

Claim Text:
1. A method of monitoring formation of a transparent conductive oxide (TCO) stack formed on a substrate, the TCO stack comprising a plurality of layers, the method comprising: acquiring a first set of optical data from a first optical measurement system, the first set of optical data being transmission and/or reflection of a first optical signal passing through and/or reflected from an intermediate stack comprising less than all of the plurality of layers of the TCO stack; acquiring a second set of optical data from a second optical measurement system, the second set of optical data being transmission and/or reflection of a second optical signal passing through and/or reflected from the plurality of layers of the TCO stack; and using the first and second sets of optical data to determine at least one of a layer thickness and an optical constant value of at least one of the plurality of layers of the TCO stack.