Patent ID: 9209052
Filing Date: 2015-12-08
Classification: G03F,H01L

Abstract:
1. A semiconductor manufacturing apparatus comprising: a vacuum chamber; a stage mounting a semiconductor substrate thereon within the vacuum chamber; an electrostatic chuck fixing the semiconductor substrate onto the stage; a sensor detecting a height of a surface of the semiconductor substrate fixed onto the stage by the electrostatic chuck; a processor determining whether the surface of the semiconductor substrate is distorted based on the height of the surface of the semiconductor substrate, and calculating correction values for a pattern transferred onto the surface of the semiconductor substrate by exposure based on the height of the surface of the semiconductor substrate when the surface of the semiconductor substrate is distorted; and an exposure part exposing the surface of the semiconductor substrate to light using the correction values, wherein when the plurality of semiconductor substrates are distorted at a common position, the exposure part exposes the surfaces of a plurality of the semiconductor substrates to the light using the correction values, and when the plurality of semiconductor substrates are distorted at different positions, the exposure part exposes the surfaces of the semiconductor substrates to the light without using correction values for correcting the distortions.