Semiconductor device
First Claim
Patent Images
1. A semiconductor device for emitting and receiving a laser beam, comprising:
- a package for packaging the semiconductor device;
a Si chip formed on a base of the package and including one or a plurality of light-receiving elements for detecting a signal;
a semiconductor laser chip disposed on a Si chip side adjacent to a connection surface with the base such that a cavity length direction and a long side direction of the package are aligned with each other, the semiconductor laser chip emitting a laser beam from an end face of the semiconductor laser chip;
a mirror portion having a reflection plane for reflecting the laser beam perpendicularly to a major surface of the package; and
a lead terminal electrically connected to an electrode of the Si chip and serving as an external electrode of the semiconductor device.
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Abstract
A high-power semiconductor laser chip 39 with a long cavity length is disposed on a side 42 of a Si chip 37 along the long side of a package, thereby reducing the thickness and size of a semiconductor device 30 for integrating the semiconductor laser chip 39 and a light-receiving element for signal processing. Further, by using the semiconductor device 30, it is possible to reduce the thickness and size of an optical pickup and the thickness and size of an optical disc drive using the optical pickup.
6 Citations
18 Claims
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1. A semiconductor device for emitting and receiving a laser beam, comprising:
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a package for packaging the semiconductor device; a Si chip formed on a base of the package and including one or a plurality of light-receiving elements for detecting a signal; a semiconductor laser chip disposed on a Si chip side adjacent to a connection surface with the base such that a cavity length direction and a long side direction of the package are aligned with each other, the semiconductor laser chip emitting a laser beam from an end face of the semiconductor laser chip; a mirror portion having a reflection plane for reflecting the laser beam perpendicularly to a major surface of the package; and a lead terminal electrically connected to an electrode of the Si chip and serving as an external electrode of the semiconductor device. - View Dependent Claims (2, 3, 5, 7, 9, 11, 13, 15, 17)
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4. A semiconductor device for emitting and receiving a laser beam, comprising:
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a package for packaging the semiconductor device; a first Si chip formed on a base of the package and including one or a plurality of light-receiving elements for detecting a signal; a second Si chip formed on the base of the package and including one or a plurality of light-receiving elements for detecting a signal; a semiconductor laser chip disposed on a first Si chip side adjacent to a connection surface with the base such that a cavity length direction and a long side direction of the package are aligned with each other, the semiconductor laser chip emitting a laser beam from an end face of the semiconductor laser chip; a mirror portion formed on the second Si chip and having a reflection plane for reflecting the laser beam perpendicularly to a major surface of the package; and a lead terminal electrically connected to an electrode of one of the first Si chip and the second Si chip and serving as an external electrode of the semiconductor device. - View Dependent Claims (6, 8, 10, 12, 14, 16, 18)
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Specification