Patent ID: 6014200
Filing Date: 2000-01-11
Classification: B82Y,H01J

Abstract:
An electron-beam lithography system, comprising:a source of electrons;a stage supporting an object to be exposed by the electrons;a beamlet shaping section disposed between the source of electrons and the object to be exposed by the electrons comprising a first multi-aperture array having m rows and n columns of apertures having a first shape and a second multi-aperture array having m rows and n columns of apertures having a second shape;a beamlet blanking section disposed between the beamlet shaping section and the object;a first electron lens group directing electrons emitted from the source of electrons into a collimated beam in an axial direction towards the first multi-aperture array;a second electron lens group directing each electron beamlet in the array of electron beamlets formed by the first multi-aperture array towards the center of a corresponding aperture in the second multi-aperture array; andan electron deflector disposed between the first multi-aperture array and the second multi-aperture array.