Patent ID: 6405659
Filing Date: 2002-06-18
Classification: G03F,H01L

Abstract:
A stage assembly that is adapted to move an object, the stage assembly comprising:a mounting frame; a stage frame that is movable relative to the mounting frame along a first axis and a second axis that is substantially orthogonal to the first axis, wherein the stage frame includes a first side section and a second side section that is spaced apart and substantially parallel to the first side section; a first mover adapted to move the stage frame along the first axis, the first mover including a first stage component that is secured to the stage frame; and a second mover adapted to move the stage frame along the second axis, the second mover including a second stage component that is secured to the stage frame, wherein the first stage component and the second stage component are secured to the first side section and the second side section, and wherein the positional relationship between the first stage component and the second stage component relative to a third axis that is substantially orthogonal to the first axis and the second axis at the first side section is different from the positional relationship between the first stage component and the second stage component relative to the third axis at the second side section.