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AssigneesHitachi, Ltd., Hitachi Printing Solutions, Ltd.
InventorsShinichi Nakatsuka, Susumu Saito, Junshin Sakamoto, Kazuo Sakaki, Masahide Tokuda
Estimating the term…
The subject of the disclosed art is to prevent a short circuit between plural electrodes caused by soldering in the assembling process for a semiconductor laser element. The constitution for improving the subject is as follows. A semiconductor laser device comprises a semiconductor laser chip having a first electrode and a laser sustaining material, in which the laser sustaining material has electrodes and solder layers connected electrically therewith on the surface where the semiconductor laser chip is mounted, the first electrode of the semiconductor laser chip is connected with the solder layer of the laser sustaining material and at least the solder layer of the laser sustaining material extends from at least one end face in the longitudinal direction of an optical resonator of the semiconductor laser chip to the outside of the optical resonator.
A semiconductor laser device comprising:
A semiconductor laser device, wherein plural semiconductor laser portions isolated from each other by an isolation region are arranged in an array on the main surface of a semiconductor substrate, semiconductor laser elements in which respective electrodes are disposed on one surface of respective semiconductor laser portions are mounted on the element mounting region of a laser sustaining material, and connected by way of plural electrodes and solder layers disposed being isolated from each other by an isolation region on the device mounting region only with the electrodes of the laser sustaining material to which plural electrodes of the semiconductor laser electrodes correspond respectively, and at least the solder layer is in a stripe shape in the extending direction of the optical resonator of the semiconductor laser element and has a portion that extends from at least one end face in the longitudinal direction of the optical resonator of the semiconductor laser element to the outside of the optical resonator.
Dependencies are inferred from the claim text.