Invention Grant
- Patent Title: Wafer level packaging of electronic device
- Patent Title (中): 晶圆级包装电子设备
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Application No.: US14925293Application Date: 2015-10-28
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Publication No.: US09548434B2Publication Date: 2017-01-17
- Inventor: Mordechai Margalit
- Applicant: VIAGAN Ltd.
- Agency: Smith Tempel Blaha, LLC
- Agent Gregory S. Smith
- Main IPC: H01L33/62
- IPC: H01L33/62 ; H01L33/56 ; H01L33/50 ; H01L33/58 ; H01L33/48 ; H01L23/498 ; H01L33/54 ; H01L23/31 ; H01L21/48 ; H01L21/56

Abstract:
Wafer level packaging of LED devices is accomplished using a bottom wafer that includes one or more vias. A passivation layer is placed over the top surface of the bottom wafer including the surface of the vias. Metal pads are placed on the top surface of the passivation layer and extend to the bottom of the vias. Bond pads are then associated with the metal pads and ultimately used in attaching an LED device bottom wafer assembly. An encapsulation layer is applied and in contact with the LED device and a top wafer is attached to the encapsulation layer. The thickness of the bottom wafer is reduced, removing the lower portion to expose the metal pads at the bottom of the vias. An isolation layer is applied to the bottom wafer and holes are formed in the isolation layer to expose the metal pads. Electroplated structures are in contact with the isolation layer and in contact with the exposed metal pads.
Public/Granted literature
- US20160111616A1 WAFER LEVEL PACKAGING OF ELECTRONIC DEVICE Public/Granted day:2016-04-21
Information query
IPC分类: