IP Library Granted Patent US 12708022
Granted Patent B2
US 12708022 · App. 17/965,819 · Granted Aug 11, 2026

Interconnect strips

Inventor: Chih-Chien Ho (Plano, TX)
Assignee: TEXAS INSTRUMENTS INCORPORATED
H10W74/014H10W70/421H10W74/016H10W74/114H10W90/753H10W90/811H10W72/5445H10W72/5449H10W72/5473H10W90/756
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Quick Facts
Patent No.
US 12708022
App. No.
17/965,819
Granted
Aug 11, 2026
Kind
B2
Abstract

A method for forming integrated circuit (IC) packages includes mounting dies on a strip of interconnects and applying wire bonds in regions of the strip of interconnects proximate to mold shields. The method also includes adjusting the mold shields of the strip of interconnects. The method includes flowing a mold compound on the strip of interconnects to form a strip of IC packages. Mold injection pressure causes the mold compound to flow from a first end of the strip of interconnects across the strip of interconnects to a second end of the strip of interconnects, and the mold shields impede the flow of the mold compound through the regions of the strip of interconnects proximate to the mold shields. The method includes singulating the strip of IC packages to form the IC packages.

Claims (44)

1 . A method for forming integrated circuit (IC) packages comprising:

mounting dies on a strip of interconnects;

applying wire bonds in regions of the strip of interconnects proximate to mold shields;

adjusting the mold shields of the strip of interconnects;

flowing a mold compound on the strip of interconnects to form a strip of IC packages, wherein mold injection pressure causes the mold compound to flow from a first end of the strip of interconnects, across the strip of interconnects and to a second end of the strip of interconnects, and the mold shields impede the flow of the mold compound through regions of the strip of interconnects proximate to the mold shields; and

singulating the strip of IC packages to form the IC packages.

2 . The method of claim 1 , wherein flow of the mold compound is unimpeded at a region proximate to a periphery of the strip of interconnects.

3 . The method of claim 2 , wherein the mold compound is plastic.

4 . The method of claim 2 , wherein the mounting further comprises mounting a plurality of dies corresponding to a respective IC package of the IC packages.

5 . The method of claim 4 , wherein the applying further comprises applying wire bonds to couple the dies corresponding to the respective IC package together.

6 . The method of claim 4 , wherein the wire bonds that couple the dies of the respective IC package together extend in a direction nearly transverse to a direction of the flow of the mold compound.

7 . The method of claim 1 , wherein the strip of interconnects comprises die pads for the dies.

8 . A method for forming integrated circuit (IC) packages comprising:

mounting dies on a strip of interconnects;

applying wire bonds in regions of the strip of interconnects proximate to mold shields;

adjusting the mold shields of the strip of interconnects;

flowing a mold compound on the strip of interconnects to form a strip of IC packages, wherein mold injection pressure causes the mold compound to flow from a first end of the strip of interconnects, across the strip of interconnects and to a second end of the strip of interconnects, and the mold shields impede the flow of the mold compound through regions of the strip of interconnects proximate to the mold shields; and

laser sawing the strip of IC packages to remove the mold shields and form the IC packages.

9 . The method of claim 8 , wherein the laser sawing comprises two passes.

10 . A method for forming integrated circuit (IC) packages comprising:

mounting dies on a strip of interconnects;

applying wire bonds in regions of the strip of interconnects proximate to mold shields;

adjusting the mold shields of the strip of interconnects;

flowing a mold compound on the strip of interconnects to form a strip of IC packages, wherein mold injection pressure causes the mold compound to flow from a first end of the strip of interconnects, across the strip of interconnects and to a second end of the strip of interconnects, and the mold shields impede the flow of the mold compound through regions of the strip of interconnects proximate to the mold shields; and

singulating the strip of IC packages into 7 or more IC packages.

11 . The method of claim 10 , wherein the mold shields are bent to an angle of between 90 degrees and 85 degrees.

12 . The method of claim 11 , wherein the mold compound has a thickness of about 1.016 millimeters (mm) on both sides of the strip of interconnects.

13 . A method for forming integrated circuit (IC) packages comprising:

mounting dies on a strip of interconnects;

applying wire bonds in regions of the strip of interconnects proximate to mold shields;

bending the mold shields from an angle parallel to a backplane of the strip of interconnects in the strip of interconnects to form an acute angle or a right angle;

flowing a mold compound on the strip of interconnects to form a strip of IC packages, wherein mold injection pressure causes the mold compound to flow from a first end of the strip of interconnects, across the strip of interconnects and to a second end of the strip of interconnects, and the mold shields impede the flow of the mold compound through regions of the strip of interconnects proximate to the mold shields; and

singulating the strip of IC packages to form the IC packages.

14 . The method of claim 13 , wherein the mold shields extend beyond the mold compound.

15 . The method of claim 13 , wherein the interconnects of the strip of interconnects are spaced about 1.57 mm apart.

16 . A strip of integrated circuit (IC) packages comprising:

a strip of interconnects comprising mold shields arranged in a center region of the strips of interconnects, the mold shields forming a right angle or an acute angle;

dies mounted on the strips of interconnects;

wire bonds in the center region of the strips of interconnects; and

a mold compound encapsulating the strip of interconnects, wherein the mold shields protrude out of the mold compound.

17 . The strip of IC packages of claim 16 , wherein the mold compound is plastic.

18 . The strip of IC packages of claim 16 , wherein a respective IC package of the strip of IC packages includes multiple dies of the dies.

19 . The strip of IC packages of claim 18 , wherein the wire bonds couple the multiple dies of the respective IC package.

20 . The strip of IC packages of claim 16 , wherein the IC packages are dual in-line IC packages.