Invention Grant
- Patent Title: Circuit board for direct flip chip attachment
- Patent Title (中): 用于直接倒装芯片连接的电路板
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Application No.: US12038200Application Date: 2008-02-27
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Publication No.: US07749813B2Publication Date: 2010-07-06
- Inventor: Boris Kolodin , James Reginelli
- Applicant: Boris Kolodin , James Reginelli
- Applicant Address: US OH Cleveland
- Assignee: Lumination LLC
- Current Assignee: Lumination LLC
- Current Assignee Address: US OH Cleveland
- Agency: Fay Sharpe LLP
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L23/12 ; H01L23/053 ; H05K1/00 ; H05K3/02 ; H05K3/10

Abstract:
A packaging method comprises: forming a circuit board by forming a substantially continuous conductive layer on an insulating board and removing selected portions of the continuous conductive layer to define an electrically conductive trace; laser cutting the electrically conductive trace to define sub-traces electrically isolated from each other by a laser-cut gap formed by the laser cutting; and bonding a light emitting diode (LED) chip to the circuit board across or adjacent to the laser-cut gap, the bonding including operatively electrically connecting an electrode of the LED chip to one of the sub-traces without using an interposed submount. A semiconductor package comprises an LED chip flip-chip bonded to sub-traces of an electrically conductive trace of a circuit board, the sub-traces being electrically isolated from each other by a narrow gap of less than or about 100 microns.
Public/Granted literature
- US20090212317A1 CIRCUIT BOARD FOR DIRECT FLIP CHIP ATTACHMENT Public/Granted day:2009-08-27
Information query
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