Patent ID: 7906978
Filing Date: 2011-03-15
Classification: H01L

Abstract:
1. A device for measuring or inspecting substrates of the semiconductor industry, comprising: a base frame; a module frame for detachably mounting a module; at least two self-aligning coupling elements and at least one alignment element for detachably connecting the module frame to the base frame, wherein each self-aligning coupling element has a pin and a receptacle, wherein the pin and the receptacle are operatively arranged to engage with each other; wherein the base frame and the module frame are in exactly defined spatial alignment with each other when the pin and the receptacle are connected to each other, wherein the pin is insertable into the receptacle in a defined direction and is shifted therein until it reaches a final position, where the pin and the receptacle are spatially arranged in an exactly defined way with respect to each other when in the final position, and wherein the pin and the receptacle comprise a first contact surface and a second contact surface for two different direction components; and, wherein the pin comprises a cylindrical portion, wherein the cylindrical portion of the pin is received by the first contact surface when in the final position, the first contact surface having a substantially semicircular cross-section, wherein the pin comprises a shoulder adjacent to the cylindrical portion, wherein the shoulder is arranged against the second contact surface when in the final position, and wherein the second contact surface is approximately perpendicular to the first contact surface.