IP Library Granted Patent US 6,903,304
Granted Patent B1
US 6,903,304 · App. 10/660,612 · Granted Jun 7, 2005

Process for dressing molded array package saw blade

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Quick Facts
Patent No.
US 6,903,304
App. No.
10/660,612
Granted
Jun 7, 2005
Kind
B1
Abstract

A process for reworking or dressing a saw blade used in wafer dicing and singulation of molded array integrated circuit packages, includes rotating the saw blade on a spindle and ablating an edge portion of the saw blade using a laser and thereby dressing the saw blade.

Claims (14)

1. A process for dressing a saw blade, comprising:

rotating the saw blade on a spindle; and

ablating an edge portion of the saw blade using a laser thereby dressing said saw blade.

2. The process according to claim 1 , wherein ablating said edge portion of the saw blade comprises ablating the edge portion of the saw blade using a high energy laser.

3. The process according to claim 1 , further comprising marking the saw blade to indicate that said saw blade is dressed and to indicate the number of times the saw blade has been dressed.

4. A process for reworking a saw blade used in wafer dicing and singulation of molded array IC packages, the process comprising:

mounting the saw blade on a spindle in a dressing device;

rotating the saw blade on said spindle;

feeding said saw blade into a laser beam for removing an edge portion of the saw blade.

5. The process according to claim 4 , wherein feeding comprises feeding the saw blade into a high energy laser beam.

6. The process according to claim 4 , further comprising marking the saw blade with an indicator to thereby indicate that the saw blade is reworked.

7. A process for dressing a saw blade used in wafer dicing and singulation of molded array IC packages, the process comprising:

rotating the saw blade on a spindle; and

ablating an edge portion of the saw blade using a high energy laser thereby dressing said saw blade.

Assignments (6)
CHANGE OF NAME Recorded Oct 29, 2010
From: ASAT LIMITED
To: UTAC HONG KONG LIMITED
Reel/Frame 025217/0311 →
GRANT OF SECURITY INTEREST IN PATENT RIGHTS - FIRST PRIORITY Recorded Jun 29, 2010
From: UTAC HONG KONG LIMITED
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 024599/0743 →
GRANT OF SECURITY INTEREST IN PATENT RIGHTS - SECOND PRIORITY Recorded Jun 29, 2010
From: UTAC HONG KONG LIMITED
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 024599/0827 →
GRANT OF SECURITY INTEREST IN PATENT RIGHTS - SECOND PRIORITY Recorded Jun 29, 2010
From: UTAC HONG KONG LIMITED
To: THE HONGKONG AND SHANGHAI BANKING CORPORATION LIMITED, AS SECURITY AGENT
Reel/Frame 024611/0097 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2004
From: MCLELLAN, NEIL; FAN, CHUN HO; YIN, GERALDINE TSUI YEE; SHEUNG, JOHN LAU PING
To: ASAT LTD.
Reel/Frame 015148/0087 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 26, 2004
From: MCLELLAN, NEIL; FAN, CHUN HO; YIN, GERALDINE LIN TSUI; SHEUNG, JOHN LAU PING
To: ASAT LTD.
Reel/Frame 014288/0896 →