Invention Grant
- Patent Title: Method of forming assymetrical encapsulant bead
- Patent Title (中): 形成不均匀密封胶珠的方法
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Application No.: US12364517Application Date: 2009-02-03
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Publication No.: US08017450B2Publication Date: 2011-09-13
- Inventor: Nadine Lee-Yen Chew , Elmer Dimaculangan Perez , Kiangkai Tankongchumruskul
- Applicant: Nadine Lee-Yen Chew , Elmer Dimaculangan Perez , Kiangkai Tankongchumruskul
- Applicant Address: AU Balmain, New South Wales
- Assignee: Silverbrook Research Pty Ltd
- Current Assignee: Silverbrook Research Pty Ltd
- Current Assignee Address: AU Balmain, New South Wales
- Main IPC: H01L23/24
- IPC: H01L23/24 ; H01L27/15

Abstract:
A method of forming an asymmetrical encapsulant bead on a series of wire bonds electrically connecting a micro-electronic device to a series of conductors, the micro-electronic device having a planar active surface. The method has the steps of positioning the die and the wire bonds beneath an encapsulant jetter that jets drops of encapsulant on to the wire bonds, the drops of encapsulant following a vertical trajectory, tilting the die such that the active surface is inclined to the horizontal and, jetting the drops of encapsulant to form a bead of encapsulant material covering the series of wire bonds, the bead having a cross sectional profile that is asymmetrical about an axis parallel to a normal to the active surface.
Public/Granted literature
- US20100075466A1 METHOD OF FORMING ASSYMETRICAL ENCAPSULANT BEAD Public/Granted day:2010-03-25
Information query
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