There is provided an imaging device including: a first semiconductor substrate (21) having a first region (22, R11) that includes a photoelectric conversion section (67) and a via portion (51), a second region (R12) adjacent to the first region, a connection portion (53, 84, 85) disposed at the second region, and a second semiconductor substrate (81), wherein the connection portion electrically couples the first semiconductor substrate to the second semiconductor substrate in a stacked configuration, and wherein a width of the connection portion is greater than a width of the via portion.

A wafer bonding method includes placing a top wafer on a top bonding framework including a plurality of outlet holes around a periphery of the top bonding framework. A bottom wafer is placed on a bottom bonding framework that includes a plurality of inlet holes around a periphery of the bottom bonding framework. The top bonding framework is in overlapping relation to the bottom bonding framework such that a gap exist between the top wafer and the bottom wafer. A gas stream is circulated through the gap between the top wafer and the bottom wafer entering the gap through one or more of the plurality of inlet holes and exiting the gap through one or more of the plurality of outlet holes. The gas stream replaces any existing ambient moisture from the gap between the top wafer and the bottom wafer.

A wafer bonding method includes placing a top wafer on a top bonding framework including a plurality of outlet holes around a periphery of the top bonding framework. A bottom wafer is placed on a bottom bonding framework that includes a plurality of inlet holes around a periphery of the bottom bonding framework. The top bonding framework is in overlapping relation to the bottom bonding framework such that a gap exist between the top wafer and the bottom wafer. A gas stream is circulated through the gap between the top wafer and the bottom wafer entering the gap through one or more of the plurality of inlet holes and exiting the gap through one or more of the plurality of outlet holes. The gas stream replaces any existing ambient moisture from the gap between the top wafer and the bottom wafer.

A wafer bonding method includes placing a top wafer on a top bonding framework including a plurality of outlet holes around a periphery of the top bonding framework. A bottom wafer is placed on a bottom bonding framework that includes a plurality of inlet holes around a periphery of the bottom bonding framework. The top bonding framework is in overlapping relation to the bottom bonding framework such that a gap exist between the top wafer and the bottom wafer. A gas stream is circulated through the gap between the top wafer and the bottom wafer entering the gap through one or more of the plurality of inlet holes and exiting the gap through one or more of the plurality of outlet holes. The gas stream replaces any existing ambient moisture from the gap between the top wafer and the bottom wafer.

A wafer bonding method includes placing a top wafer on a top bonding framework including a plurality of outlet holes around a periphery of the top bonding framework. A bottom wafer is placed on a bottom bonding framework that includes a plurality of inlet holes around a periphery of the bottom bonding framework. The top bonding framework is in overlapping relation to the bottom bonding framework such that a gap exist between the top wafer and the bottom wafer. A gas stream is circulated through the gap between the top wafer and the bottom wafer entering the gap through one or more of the plurality of inlet holes and exiting the gap through one or more of the plurality of outlet holes. The gas stream replaces any existing ambient moisture from the gap between the top wafer and the bottom wafer.

A wafer bonding method includes placing a top wafer on a top bonding framework including a plurality of outlet holes around a periphery of the top bonding framework. A bottom wafer is placed on a bottom bonding framework that includes a plurality of inlet holes around a periphery of the bottom bonding framework. The top bonding framework is in overlapping relation to the bottom bonding framework such that a gap exist between the top wafer and the bottom wafer. A gas stream is circulated through the gap between the top wafer and the bottom wafer entering the gap through one or more of the plurality of inlet holes and exiting the gap through one or more of the plurality of outlet holes. The gas stream replaces any existing ambient moisture from the gap between the top wafer and the bottom wafer.

A wafer bonding method includes placing a top wafer on a top bonding framework including a plurality of outlet holes around a periphery of the top bonding framework. A bottom wafer is placed on a bottom bonding framework that includes a plurality of inlet holes around a periphery of the bottom bonding framework. The top bonding framework is in overlapping relation to the bottom bonding framework such that a gap exist between the top wafer and the bottom wafer. A gas stream is circulated through the gap between the top wafer and the bottom wafer entering the gap through one or more of the plurality of inlet holes and exiting the gap through one or more of the plurality of outlet holes. The gas stream replaces any existing ambient moisture from the gap between the top wafer and the bottom wafer.

Presented herein is a device comprising a common node disposed in a first wafer a test node disposed in a first wafer and having a plurality of test pads exposed at a first surface of the first wafer. The test node also has test node lines connected to the test pads and that are separated by a first spacing and extend to a second surface of the first wafer. A comb is disposed in a second wafer and has a plurality of comb lines having a second spacing different from the first spacing. Each of the comb lines has a first surface exposed at a first side of the second wafer. The comb lines provide an indication of an alignment of the first wafer and second wafer by a number or arrangement of connections made by the plurality of comb lines between the test node lines and the common node.

Presented herein is a device comprising a common node disposed in a first wafer a test node disposed in a first wafer and having a plurality of test pads exposed at a first surface of the first wafer. The test node also has test node lines connected to the test pads and that are separated by a first spacing and extend to a second surface of the first wafer. A comb is disposed in a second wafer and has a plurality of comb lines having a second spacing different from the first spacing. Each of the comb lines has a first surface exposed at a first side of the second wafer. The comb lines provide an indication of an alignment of the first wafer and second wafer by a number or arrangement of connections made by the plurality of comb lines between the test node lines and the common node.

Presented herein is a device comprising a common node disposed in a first wafer a test node disposed in a first wafer and having a plurality of test pads exposed at a first surface of the first wafer. The test node also has test node lines connected to the test pads and that are separated by a first spacing and extend to a second surface of the first wafer. A comb is disposed in a second wafer and has a plurality of comb lines having a second spacing different from the first spacing. Each of the comb lines has a first surface exposed at a first side of the second wafer. The comb lines provide an indication of an alignment of the first wafer and second wafer by a number or arrangement of connections made by the plurality of comb lines between the test node lines and the common node.