Patent ID: 8802541
Filing Date: 2014-08-12
Classification: H01L

Abstract:
1. A low temperature wafer bonding method, comprising: providing a first substrate comprising a plurality of metal pads and a first dielectric layer close to the metal pads, where the metal pads and the first dielectric layer are on a top surface of the first substrate; providing a second substrate having a plurality of semiconductor pads and a second dielectric layer close to the semiconductor pads, where the semiconductor pads and the second dielectric layer are on a top surface of the second substrate; disposing at least one of the metal pads in direct contact with at least one of the semiconductor pads, and disposing the first dielectric layer in direct contact with the second dielectric layer; and under pressure applied to the first substrate and the second substrate, bonding the metal pads with the semiconductor pads, and bonding the first dielectric layer with the second dielectric layer.