Patent ID: 8035802
Filing Date: 2011-10-11
Classification: G03F

Abstract:
1. A semiconductor substrate processing apparatus comprising: a frame; a substrate support connected to the frame to support a semiconductor substrate; a reticle connected to the frame, the reticle having a plurality of features thereon, the features having first dimensions extending in a first direction within a plane and second dimensions extending in a second direction within the plane, the average of the first dimensions being greater than an average of the second dimensions; and an electromagnetic radiation source connected to the frame to emit electromagnetic radiation, the electromagnetic radiation having a first portion propagating in a third direction within the plane and being incident on the reticle at a first plurality of angles and a second portion propagating in a fourth direction within the plane and being incident on the reticle at a second plurality of angles, the third direction being substantially parallel to the first direction and the fourth direction being substantially parallel to the second direction, an average of the second plurality of angles being greater than an average of the first plurality of angles, at least some of the electromagnetic radiation radiating through the reticle and onto the semiconductor substrate.