Patent ID: 8624204
Filing Date: 2014-01-07
Classification: B23K,H01L

Abstract:
1. A system for serially irradiating a substrate by a plurality of radiation sources, said substrate comprising a base layer and I stacks on the base layer, said system comprising: J different electromagnetic sources of radiation, each source of said J sources characterized by a different function of wavelength and angular distribution of its emitted radiation, said J≧2; means for concurrently exposing the I stacks to radiation from only one source t(i) of the J sources in each exposure step i of I independent exposure steps such that either a first condition or a second condition is satisfied, wherein I≧2, and wherein P wherein the first condition is that said only one source t(i) is selected from the J sources in exposure step i such that an actual energy flux V wherein the second condition is a specified design condition on the substrate pertaining to a device parameter of the substrate.