Patent ID: 6573519
Filing Date: 2003-06-03
Classification: B82Y,H01J

Abstract:
An electron beam exposure apparatus that has the ability to expose patterns corresponding to the selected aperture patterns, at one time, comprising an electron gun that generates an electron beam, a block mask equipped with plural aperture patterns, mask deflectors to deflect the said electron beam so that it passes selectively through one of the said plural aperture patterns, and also to deflect the said passed electron beam so that it returns to its original path, convergent devices that converge the said electron beam that has passed through the said block mask onto a specimen, and deflectors that deflect the said electron beam on the said specimen, wherein:the said plural aperture patterns are square or rectangular and arranged in a matrix form, and each aperture pattern has a square or rectangular maximum aperture area that limits the area in which each aperture is formed; the said block mask having at least one adjusting aperture pattern equipped with independent apertures of the same shape arranged along the opposite sides of the said maximum aperture area is provided; and the said mask deflector is adjusted so that the intensity of the beam, which is radiated onto the said specimen, at the portion of the independent apertures of the same shape arranged along the opposite sides of the said adjusting aperture pattern, is uniform and maximum; wherein, the electron beam entering onto the block mask has a size covering the maximum aperture area and passes simultaneously through each of the independent apertures.