Time-based semiconductor material attachment
First Claim
1. A method for attaching semiconductor materials during manufacture comprising:
- a) moving a placement tool carrying a first semiconductor material to a first position over a second semiconductor material having an adhesive placed thereon;
b) releasing the placement tool to fall toward the second semiconductor material for a predefined period of time, which is predetermined to allow the placement tool to fall toward and into the adhesive sufficiently to leave a defined thickness of the adhesive between the first and second semiconductor materials; and
c) stopping the fall of the placement tool after the predefined period of time.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention controls attachment of a first semiconductor material, such as a semiconductor die, to a second semiconductor material, such as a bond pad, substrate, or the like. A placement tool is used to pick up the first semiconductor material and move it to a defined position above the top surface of the second semiconductor material. The second semiconductor material will have an adhesive, such as epoxy, applied to its top surface. From the defined position above the second semiconductor material, the placement tool is allowed to fall for an amount of time previously determined to result in an adhesive layer of a defined thickness, within precise tolerances. The adhesive thickness is often referred to as bond line thickness (BLT) when bonding a semiconductor die to a bond pad, substrate, or the like.
54 Citations
21 Claims
-
1. A method for attaching semiconductor materials during manufacture comprising:
-
a) moving a placement tool carrying a first semiconductor material to a first position over a second semiconductor material having an adhesive placed thereon;
b) releasing the placement tool to fall toward the second semiconductor material for a predefined period of time, which is predetermined to allow the placement tool to fall toward and into the adhesive sufficiently to leave a defined thickness of the adhesive between the first and second semiconductor materials; and
c) stopping the fall of the placement tool after the predefined period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for attaching semiconductor die during manufacture comprising:
-
a) moving a placement tool carrying a semiconductor die to a first position over a second semiconductor material having an adhesive placed thereon;
b) releasing the placement tool to fall toward the second semiconductor material for a predefined period of time, which is predetermined to allow the placement tool to fall toward and into the adhesive sufficiently to leave a predefined bond line thickness for the adhesive between the semiconductor die and the second semiconductor material; and
c) stopping the fall of the placement tool after the predefined period of time. - View Dependent Claims (10, 11)
-
-
12. A system for controlling attachment of semiconductor materials during manufacture of a semiconductor comprising a control system with a placement tool adapted to pick up and move a first semiconductor material, said control system adapted to:
-
a) move the placement tool carrying the first semiconductor material to a first position over a second semiconductor material having an adhesive placed thereon;
b) release the placement tool to fall toward the second semiconductor material for a predefined period of time, which is predetermined to allow the placement tool to fall toward and into the adhesive sufficiently to leave a defined thickness of the adhesive between the first and second semiconductor materials; and
c) stop the fall of the placement tool after the predefined period of time. - View Dependent Claims (13, 14, 15, 16, 17, 18)
-
-
19. A system for attaching semiconductor materials during manufacture comprising:
-
a) means for placement of a first semiconductor material;
b) means for moving the means for placement carrying the first semiconductor material to a first position over a second semiconductor material having an adhesive placed thereon;
c) means for releasing the means for placement to fall toward the second semiconductor material for a predefined period of time, which is predetermined to allow the means for placement to fall toward and into the adhesive sufficiently to leave a defined thickness of the adhesive between the first and second semiconductor materials; and
d) means for stopping the fall of the means for placement after the predefined period of time. - View Dependent Claims (20, 21)
-
Specification