Patent ID: 9082681
Filing Date: 2015-07-14
Classification: B81C,G01N,H01L

Abstract:
1. A method of bonding a cap substrate to a sensor substrate, the method comprising: covering the sensor substrate with a passivation layer; patterning the passivation layer to expose bonding regions of the sensor substrate dispensing a volume of a photo-sensitive adhesive so that the photo-sensitive adhesive flows into the bonding regions to coat the sensor substrate, the photo-sensitive adhesive made of an electrically insulating material; patterning the photo-sensitive adhesive; patterning the cap substrate; aligning the cap substrate to the sensor substrate; and applying pressure to the cap substrate, the photo-sensitive adhesive, and the sensor substrate at a temperature that is lower than a characteristic temperature of the photo-sensitive adhesive, to bond the cap substrate to the sensor substrate using the electrically insulating material to electrically isolate the cap substrate from the sensor substrate.