发明授权
US07378332B2 Laminated substrate, method of manufacturing the substrate, and wafer outer periphery pressing jigs used for the method 有权
层叠基板,基板的制造方法以及用于该方法的晶片外周加压夹具

Laminated substrate, method of manufacturing the substrate, and wafer outer periphery pressing jigs used for the method
摘要:
Provided are a bonding substrate whose defective bonding portion in a peripheral region of an active layer has been removed by a polishing applied thereto after a surface grinding, a manufacturing method of the same substrate and wafer periphery pressing jigs. After the surface grinding, a periphery removing polishing is applied from an active layer wafer side of a bonding wafer so that a peripheral region of the active layer may be removed and a central region thereof may be left un-removed. Consequently, a periphery grinding and a periphery etching according to the prior art can be eliminated. Furthermore, an etch pit on a circumferential face of a wafer which could be caused by the periphery etching and a contamination or a scratching in an SOI layer which could be caused by a silicon oxide film left un-ground-off can be prevented, thereby achieving high yield and low cost.
信息查询
0/0