Invention Grant
- Patent Title: Wafer dicing from wafer backside
- Patent Title (中): 晶圆切片从晶圆背面
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Application No.: US14095824Application Date: 2013-12-03
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Publication No.: US08975162B2Publication Date: 2015-03-10
- Inventor: Wei-Sheng Lei , Brad Eaton , Aparna Iyer , Saravjeet Singh , Madhava Rao Yalamanchili , Ajay Kumar
- Applicant: Applied Materials, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Blakely Sokoloff Taylor Zafman LLP
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L21/822 ; H01L21/78 ; H01L21/308 ; H01L21/683

Abstract:
Methods of dicing semiconductor wafers, each wafer having a plurality of integrated circuits, are described. For example, a method includes applying a protection tape to a wafer front side, the wafer having a dicing tape attached to the wafer backside. The dicing tape is removed from the wafer backside to expose a die attach film disposed between the wafer backside and the dicing tape. Alternatively, if no die attach film is initially disposed between the wafer backside and the dicing tape, a die attach film is applied to the wafer backside at this operation. A water soluble mask is applied to the wafer backside. Laser scribing is performed on the wafer backside to cut through the mask, the die attach film and the wafer, including all layers included within the front side and backside of the wafer. A plasma etch is performed to treat or clean surfaces of the wafer exposed by the laser scribing. A wafer backside cleaning is performed and a second dicing tape is applied to the wafer backside. The protection tape is the removed from the wafer front side.
Public/Granted literature
- US20140179084A1 WAFER DICING FROM WAFER BACKSIDE Public/Granted day:2014-06-26
Information query
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