作者: David J. Elliott
DOI: 10.1016/B978-0-12-237070-0.50012-1
关键词: Reticle 、 Lithography 、 Optics 、 Wafer 、 Semiconductor device fabrication 、 Integrated circuit 、 Excimer laser 、 Materials science 、 Laser 、 Stepper
摘要: Deep- ultraviolet (UV) lithography represents a highly specialized application of excimer lasers, primary light source for imaging VLSI reticle patterns onto photoresist-coated silicon wafers advanced integrated circuit (IC) fabrication. The laser is in high resolution optical projection aligner, the wafer stepper. Deep-UV steppers are used volume production density memory, microprocessors, and bipolar metal-oxide-semiconductor (MOS) logic circuits. This chapter discusses evolution deep-UV resulting sub-half-micron stepper; technical requirements lithographic technology applied to manufacturing; stepper functions specifications; line-narrowed design, spectral narrowing, stabilization; use maintenance utilities. IC fabrication, lithography, has undergone progress since invention transistor. Optics wavelengths must be purity transmissive region interest.