Driving module of laser diode
AssigneeNGK Insulators, Ltd.
InventorsHiroshi Kato, Masato Asano, Takuhiro Tani, Yasunori Iwasaki
Life of this patent
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Abstract
A driving module for a laser diode has a submount substrate 1 for juxtaposing laser diodes 6, 6 and a driver IC 2. The driver IC 2 has an electric current switch circuit 3 for operating the laser diode 6, a output buffer circuit 4, and an input amplifying circuit 5. A power pattern 8 of a band shape is formed on the submount substrate 1 side by side with a line of the laser diodes 6. A connecting pad 14 for supplying an electric current to the electric current switch circuit 3 is arranged adjacent to a connecting portion with each laser diode 6. The operating electric current is supplied from this connecting pad 14 to the electric current switch circuit 3 by wire bonding.
Claims11
A driving module for a laser diode comprising:
- a laser diode substrate on which at least one laser diode is mounted, said laser diode being connected to a common power line;
- and
- a driver circuit substrate having an at least one electric current switch circuit for turning the laser diode on and off, said electric current switch circuit being connected to said common power line;
- said common power line being formed on at least one of said laser diode substrate and said driver circuit substrate, such that electric current is supplied from the common power line to both the laser diode and the electric current switch circuit.
Dependencies are inferred from the claim text.