Patent ID: 7239027

Claim:
A bonding structure of device packaging, comprising: a first substrate having a first surface with a first center area, a plurality of metal pads located on the first surface outside the first center area, and a first bonding metal layer located on the first center area; and a second substrate, having a second surface with a second center area, a plurality of electrodes located on the second surface outside the second center area, and a second bonding metal layer located on the second center area; wherein the second bonding metal layer is adhered onto the first bonding metal layer so that the first substrate and the second substrate are bonded together, and the metal pads are in electrical communication with the electrodes; and wherein the first substrate contains adhesive metal circuit layers, the adhesive metal circuit layers having areas facing the second substrate and corresponding to the respective metal pads and being larger than areas of the metal pads, wherein the adhesive metal circuit layers connect the metal pads and the electrodes.