Manufacturing method for nitride III-V compound semiconductor device using bonding
First Claim
1. A method for manufacturing a semiconductor device comprising the steps of:
- bonding a surface of a nitride III-V compound semiconductor layer of a first wafer-shaped or bar-shaped substrate to one of major surfaces of a second wafer-shaped or bar-shaped substrate, said first substrate having said nitride III-V compound semiconductor layer on one of major surfaces thereof to form a plurality of devices;
forming said plurality of devices on said nitride III-V compound semiconductor layer; and
dividing said first substrate and said second substrate bonded together into a plurality of portions.
1 Assignment
0 Petitions
Accused Products
Abstract
In a semiconductor device manufacturing method capable of manufacturing semiconductor lasers, light emitting diodes or electron transport devices using nitride III-V compound semiconductors with a high productivity, a GaN semiconductor laser wafer is prepared in which a plurality of semiconductor lasers are formed on an AlGaInN semiconductor layer on a c-face sapphire substrate and separated from each other by grooves deep enough to reach the c-face sapphire substrate, and a p-side electrode and an n-side electrode are formed in each semiconductor laser. The GaN semiconductor laser wafer is bonded to a photo-diode built-in Si wafer having formed a photo diode for monitoring light outputs and solder electrodes in each pellet by positioning the p-side electrode and the n-side electrode in alignment with the solder electrodes, respectively. After that, by lapping the c-face sapphire substrate from its bottom surface deep enough to reach the grooves or by dicing the c-face sapphire substrate from its bottom surface, the semiconductor lasers on the photo-diode built-in Si wafer are separated from each other. After that, the photo-diode built-in Si wafer is divided by dicing into discrete pellets. A GaN semiconductor laser chip, thus obtained, is assembled on a package.
-
Citations
16 Claims
-
1. A method for manufacturing a semiconductor device comprising the steps of:
-
bonding a surface of a nitride III-V compound semiconductor layer of a first wafer-shaped or bar-shaped substrate to one of major surfaces of a second wafer-shaped or bar-shaped substrate, said first substrate having said nitride III-V compound semiconductor layer on one of major surfaces thereof to form a plurality of devices;
forming said plurality of devices on said nitride III-V compound semiconductor layer; and
dividing said first substrate and said second substrate bonded together into a plurality of portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for manufacturing a semiconductor device comprising the steps of:
-
bonding a surface of a nitride III-V compound semiconductor layer of a first wafer-shaped or bar-shaped substrate to one of major surfaces of a second wafer-shaped or bar-shaped substrate, said first substrate having said nitride III-V compound semiconductor layer on one of major surfaces thereof to form a plurality of devices separated from each other by grooves deep enough to reach said first substrate, said nitride III-V compound semiconductor layer having on a surface thereof first projections and second projections extending in parallel with said grooves and separated from each other; and
dividing said first substrate and said second substrate bonded together into a plurality of portions.
-
-
13. A method for manufacturing a semiconductor device comprising the steps of:
-
bonding a surface of a nitride III-V compound semiconductor layer of a first wafer-shaped or bar-shaped substrate to one of major surfaces of a second wafer-shaped or bar-shaped substrate, said first substrate having said nitride III-V compound semiconductor layer on one of major surfaces thereof to form a device; and
dividing said first substrate and said second substrate bonded together into a plurality of portions.
-
-
14. A method for manufacturing a semiconductor device comprising the steps of:
-
preparing a GaN semiconductor laser wafer by;
forming a plurality of semiconductor lasers on an AlGaInN semiconductor layer formed on a top surface of a c-face sapphire substrate, said plurality of semiconductors being separated from each other by grooves formed deep enough into said AlGaInN semiconductor layer to reach said c-face sapphire substrate;
forming a p-side electrode and an n-side electrode in each of said semiconductor lasers;
bonding said GaN semiconductor laser wafer to a photo-diode built-in Si wafer having formed thereon at least a pellet corresponding to each semiconductor laser, each pellet having a photo-diode for monitoring light outputs and at least two solder electrode, by positioning said p-side electrode and said n-side electrode in alignment with said at least two solder electrodes, respectively;
separating from each other said semiconductor lasers on said photo-diode built-in Si wafer by removing said c-face sapphire substrate from a bottom surface deep enough to reach said grooves;
dividing said photo-diode built-in Si wafer by dicing into discrete pellets; and
assembling a resulting GaN semiconductor laser chip on a package. - View Dependent Claims (15, 16)
-
Specification