Patent ID: 6547121
Filing Date: 2003-04-15
Classification: H01L,Y10T

Abstract:
An apparatus for die bonding a semiconductor device to a substantially flat substrate having opposing outer peripheral edges, the apparatus comprising:a bed for supporting the substrate; a heater block in the bed for heating the substrate; and a clamp for clamping the substrate to the bed while the substrate moves along a longitudinal axis of the bed, the clamp including: a clamp body having a first branch and a second branch, each of the first and second branches extending across and above a width of the substrate in a direction normal to the longitudinal axis of the bed and having an end fixedly attached to an end of the bed, the semiconductor device being die bonded to the substrate passing under said each of the first and second branches of the clamp body, first and second resilient finger attached to said each of the first and second branches, and a pair of rollers attached to each of the first and second branches, wherein one roller of each pair of rollers is attached to the first resilient finger and contacts the substrate proximate one of the opposing outer peripheral edges and the other roller of said each pair of rollers is attached to the second resilient finger and contacts the substrate proximate the other of the opposing outer peripheral edges as the substrate moves along the longitudinal axis of the bed, preventing the substrate from warping when the substrate is heated by the heater block.