IP Library Granted Patent US 8,338,922
Granted Patent B1
US 8,338,922 · App. 12/661,444 · Granted Dec 25, 2012

Molded leadframe substrate semiconductor package

Assignee: UTAC Thai Limited
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Quick Facts
Patent No.
US 8,338,922
App. No.
12/661,444
Granted
Dec 25, 2012
Kind
B1
Abstract

A process for forming semiconductor packages includes partially etching a leadframe matrix, encapsulating it with mold compound, placing a semiconductor die in a leadframe unit and singulating the leadframe matrix. A system for forming semiconductor packages includes means for partially etching a leadframe matrix, means for encapsulating it with mold compound, means for placing a semiconductor die in a leadframe unit and means for singulating the leadframe matrix.

Claims (13)

1. A system for forming singulated semiconductor devices comprising:

a. a top mold comprising an injector for injecting a mold compound in a liquid state; and

b. a bottom mold configured to hold a leadframe matrix to receive the mold compound in a liquid state thereby forming a molded leadframe matrix;

c. a pick and place mechanism for placing semiconductor die in individual leadframe units; and

d. at least one cutting element for singulating the molded leadframe matrix thereby forming singulated semiconductor devices.

2. The system for forming singulated semiconductor devices according to claim 1 wherein the injector comprises a film gate.

3. The system for forming singulated semiconductor devices according to claim 1 wherein the injector comprises a pincer gate.

4. The system for forming singulated semiconductor devices according to claim 1 further comprising a tape carrier for carrying the leadframe units.

5. The system for forming singulated semiconductor devices according to claim 1 wherein the at least one cutting element comprises a saw.

6. The system for forming singulated semiconductor devices according to claim 1 wherein the at least one cutting element comprises a punch.

7. The system for forming singulated semiconductor devices according to claim 1 wherein the injector comprises a pincer gate.

8. The system for forming singulated semiconductor devices according to claim 1 wherein the injector comprises a film gate.

9. The system for forming singulated semiconductor devices according to claim 1 further comprising a vacuum pump output.

Assignments (3)
CORRECTIVE ASSIGNMENT TO ADD THE ANNEX A AND THE ANNEX B WHICH WAS INADVERTENTLY LEFTOUT IN THE ORIGINAL ASSIGNMENT DOCUMENT PREVIOUSLY RECORDED ON REEL 037959 FRAME 0937. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Jul 8, 2016
From: UTAC THAI LIMITED
To: UTAC HEADQUARTERS PTE. LTD.
Reel/Frame 039902/0302 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2016
From: UTAC THAI LIMITED
To: UTAC HEADQUARTERS PTE. LTD.
Reel/Frame 037959/0937 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 16, 2010
From: SIRINORAKUL, SARAVUTH; NONDHASITTHICHAI, SOMCHAI
To: UTAC THAI LIMITED
Reel/Frame 024149/0863 →
Continuity (2)
Division 12287174 · Oct 6, 2008
Provisional Application 61002138 · Nov 6, 2007