Patent Number: 
Section: claims

1. An E-beam lithography system, comprising:a loading unit loading and unloading substrates;an alignment chamber in which the substrates are aligned; anda lithography chamber including a stage where more than one of the substrates are mounted and irradiated with at least one electron beam;wherein the stage includes an E-beam measuring unit adjusting the at least one electron beam and aligning the stage,wherein the E-beam measuring unit includes a focus measuring portion, a level measuring portion, and a position measuring portion,wherein the focus measuring portion has multiple levels,wherein the level measuring portion has one of a shape of a polygon with a convex surface and a shape of a hemisphere, andwherein the position measuring portion has one of a shape of a polygon with a protruding portion and a cross shape. 2. The E-beam lithography system of claim 1, further comprising:a vacuum chamber creating a vacuum in the chambers; anda transfer chamber transferring the substrates from at least one of the loading unit and the chambers. 3. The E-beam lithography system of claim 1, wherein the E-beam measuring unit is located at a center of the stage. 4. The E-beam lithography system of claim 1, wherein the stage includes:a first direction stage moving portion moving the stage in a first direction; anda second direction stage moving portion moving the stage in a second direction. 5. The E-beam lithography system of claim 4, wherein the first direction is substantially perpendicular to the second direction. 6. The E-beam lithography system of claim 4, wherein the stage includes a first direction stage guide and a second direction stage guide. 7. The E-beam lithography system of claim 4, wherein the stage includes a first direction laser mirror and a second direction laser mirror. 8. The E-beam lithography system of claim 1, wherein a plurality of irradiating systems is provided in the lithography chamber. 9. The E-beam lithography system of claim 8, wherein each of the irradiating systems includes an electron gun, at least one electron lens, and at least one aperture. 10. The E-beam lithography system of claim 9, wherein the at least one aperture includes at least one of a variable rectangular aperture and a circular aperture. 11. The E-beam lithography system of claim 8, wherein the irradiating systems share one E-beam control system controlling density, current, voltage and energy of the at least one electron beam. 12. The E-beam lithography system of claim 1, wherein the alignment chamber includes a cassette aligning the substrates. 13. The E-beam lithography system of claim 1, wherein each of the substrates is one of a photomask and a reticle.