Methods and apparatus to dispense adhesive for semiconductor packaging
OwnerFrank Yu, Kevin Jin +2inventors
InventorsFrank Yu, Kevin Jin, Muhammad F. Khan, Mario A. Magana
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Abstract
Methods and apparatus are disclosed to dispense adhesive for semiconductor packaging. A disclosed example shower head dispenser includes a body to receive adhesive from the dispenser, and a shower head tip having a dispensing cavity in communication with the body to dispense the adhesive in a pattern. The example shower head dispenser also includes a layer of non-stick material coating a contact surface of the dispensing cavity to reduce tailing of the adhesive.
Claims20
For use with a dispenser to dispense adhesive to secure a semiconductor die to a lead frame, a shower head dispenser comprising:
- a body to receive adhesive from the dispenser;
- a shower head tip having a dispensing cavity in communication with the body to dispense the adhesive in a pattern, the dispensing cavity having a contact surface;
- and
- a layer of non-stick material coating the contact surface to reduce tailing of the adhesive.
A method of securing a semiconductor die to a lead frame, the method comprising:
- engaging the lead frame with a surface of a dispensing cavity of a shower head dispenser, the surface being coated with a non-stick material;
- at least partially filling the dispensing cavity with adhesive;
- lifting the shower head dispenser from the lead frame;
- and
- placing the semiconductor die on the dispensed adhesive.
For use with a dispenser to dispense adhesive to secure a semiconductor die to a lead frame, a shower head dispenser comprising:
- a body to receive adhesive from the dispenser;
- and
- a shower head tip having a star-shaped dispensing cavity in communication with the body to dispense the adhesive in a pattern, the star-shaped dispensing cavity having a contact surface and a plurality of channels, each of the channels having a recessed corner such that the star-shaped cavity has a greater height at the corners of the star-shaped cavity than at a center of the star-shaped cavity.
Dependencies are inferred from the claim text.