Patent ID: 9511438
Filing Date: 2016-12-06
CPC Classification: B22D,B23K,H01L,H05K

Claim Text:
1. A solder bump forming apparatus comprising: a work stage arranged to carry an electronic component having a mask disposed over an upper surface of the electronic component with a mask opening positioned where the bump is to be formed directly on the electronic component; a first heater unit positioned to be in direct or indirect heating contact with a lower surface of the electronic component when the work stage is in a mask opening filling index position and the electronic component is supported by the work stage; a molten solder injection head movably supported at the mask opening filling position to move horizontally while maintaining a nozzle of the injection head in contact with an upper surface of the mask and the molten solder injection head being arranged to supply molten solder through the nozzle to deliver a predetermined amount of molten solder directly onto the electronic component at the mask opening when the work stage is in the mask opening filling index position and the electronic component is supported by the work stage; and a first cooling unit movably supported at the mask opening filling position to move between a non-contacting position and a contacting position in which the first cooling unit selectively contacts a lower surface of the first heater unit, wherein the first cooling unit is arranged to forcedly cool, through the first heater unit, each of (1) the electronic component supplied with the molten solder, (2) the mask, (3) the molten solder in the mask opening, and (4) the nozzle holding molten solder when the first cooling unit contacts the lower surface of the first heater unit after the operation of the first heater unit has been stopped.