IP Library Granted Patent US 9,263,398
Granted Patent B1
US 9,263,398 · App. 14/679,218 · Granted Feb 16, 2016

Semiconductor packaging identifier

Inventor: Bo Soon Chang (Cupertino, CA)
Assignee: Cypress Semiconductor Corporation
H01L23/544H01L21/4828H01L23/49503H01L23/49541H01L23/49579H01L24/49H01L2223/5442H01L2223/54413H01L2223/54433H01L2223/54486H01L2224/48247H01L2924/14H01L2924/17747
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Quick Facts
Patent No.
US 9,263,398
App. No.
14/679,218
Granted
Feb 16, 2016
Kind
B1
Abstract

Described is a semiconductor package frame including a material comprising wire openings a die-mounting surface area with a die-mounting surface and identification markings included within the die-mounting surface. The identification markings uniquely identify the semiconductor package frame from among other semiconductor package frames comprising different identification markings.

Claims (33)

1. A semiconductor package frame comprising:

a material comprising a plurality of wire openings;

a die-mounting surface area comprising a die-mounting surface; and

a plurality of identification markings included within the die-mounting surface, the plurality of identification markings to uniquely identify the semiconductor package frame from among other semiconductor package frames comprising different identification markings.

2. The semiconductor package frame of claim 1 , wherein the semiconductor package frame accommodates a Quad Flat package with no lead.

3. The semiconductor package frame of claim 1 , wherein the die-mounting surface area comprises copper.

4. The semiconductor package frame of claim 1 , wherein the identification markings are dimples that extend through the die-mounting surface area at least halfway.

5. The semiconductor package frame of claim 1 , wherein the identification markings are individual binary coded markings.

6. The semiconductor package frame of claim 1 , wherein the identification markings resemble alpha numeric characters.

7. The semiconductor package frame of claim 1 , wherein the identification markings are individual dot matrix characters.

8. The semiconductor package frame of claim 1 , wherein the identification markings are visible via X-ray imagery.

9. The semiconductor package frame of claim 1 , further comprising a plurality of conductive fingers.

10. An integrated circuit package comprising:

a plurality of pins;

a plurality of wires coupled to the pins;

an integrated circuit die coupled to the plurality of wires;

a lead frame comprising:

a material comprising a plurality of wire openings;

a die-mounting surface area comprising a die-mounting surface; and

a plurality of identification markings included within the die-mounting surface, the plurality of identification markings to uniquely identify the lead frame from among other lead frames comprising different identification markings.

11. The integrated circuit package of claim 10 , wherein the lead frame accommodates a Quad Flat package with no lead.

12. The integrated circuit package of claim 10 , wherein the die-mounting surface area comprises copper.

13. The integrated circuit package of claim 10 , wherein the identification markings are dimples that extend through the die-mounting surface area at least halfway.

14. The integrated circuit package of claim 10 , wherein the identification markings are individual binary coded markings.

15. The integrated circuit package of claim 10 , wherein the identification markings resemble alpha numeric characters.

16. The integrated circuit package of claim 10 , wherein the identification markings are individual dot matrix characters.

17. The integrated circuit package of claim 10 , wherein the plurality of identification markings are visible via X-ray imagery.

18. The integrated circuit package of claim 10 , wherein the lead frame further comprises a plurality of conductive fingers disposed between the plurality of openings in the material.

19. A method for forming a lead frame comprising:

forming a plurality of wire openings in a material;

receiving identification information; and

forming a plurality of identification markings on a die-mounting surface within a die-mounting surface area of the material based on the identification information, wherein the die-mounting surface area comprises a die-mounting surface for mounting a die, the plurality of identification markings to uniquely identify the semiconductor package frame from among other semiconductor package frames comprising different identification markings.

20. The method of claim 19 , wherein the plurality of identification markings are formed via an etching process.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 14, 2016
From: CYPRESS SEMICONDUCTOR CORPORATION
To: MONTEREY RESEARCH, LLC
Reel/Frame 040911/0238 →
PARTIAL RELEASE OF SECURITY INTEREST IN PATENTS Recorded Aug 11, 2016
From: MORGAN STANLEY SENIOR FUNDING, INC., AS COLLATERAL AGENT
To: CYPRESS SEMICONDUCTOR CORPORATION; SPANSION LLC
Reel/Frame 039708/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 9, 2015
From: CHANG, BO SOON
To: CYPRESS SEMICONDUCTOR CORPORATION
Reel/Frame 036992/0690 →
Continuity (2)
Continuation 12057648 · Mar 28, 2008
Provisional Application 60921153 · Mar 30, 2007