Patent ID: 6915827
Filing Date: 2005-07-12
Classification: B23K,H01L,Y10T

Abstract:
1. An offset measuring mechanism in a bonding apparatus that includes: a position detection camera that detects the position of a part to be bonded on a bonding working plane, a bonding tool that is disposed with an offset from said position detection camera, and a moving means for moving said position detection camera and said bonding tool as an integral unit on a plane parallel to said bonding working plane, wherein said offset measuring mechanism that measures said offset comprises: an offset measuring camera which is disposed on an opposite side of said bonding working plane from said position detection camera and said bonding tool and which faces said bonding working plane; an imaging position measuring means which uses said moving means to move said position detection camera into a measurement range of said offset measuring camera and determines a reference position of an imaging range in an imaging plane of said position detection camera based upon measurement of said imaging plane of said position detection camera by said offset measuring camera; a tool position measuring means which uses said moving means to move said bonding tool into said measurement range of said offset measuring camera and measures a tool position of said bonding tool with said offset measuring camera; and an offset calculating means which calculates said offset based upon a measured value of said determined reference position of said imaging range and a measured value of said tool position; and said position detection camera has a plurality of imaging elements disposed in two dimensions in directions of mutually perpendicular element disposition axes which are associated with mutually perpendicular imaging reference axes of said imaging plane; and said reference position of said imaging range is a reference position of said two-dimensional disposition of said plurality of imaging elements.