Laser diode device
First Claim
Patent Images
1. A laser diode device comprising:
- a housing having a mounting part;
a laser diode chip based on a nitride compound semiconductor material in the housing on the mounting part, the chip having, on a substrate, semiconductor layers with an active layer for generating light and the chip having a radiation coupling-out area with a radiation coupling-out region for emitting the generated light, a rear side area situated opposite the radiation coupling-out area, and side areas connecting the radiation coupling-out area and the rear side area; and
a solder layer, wherein the laser diode chip is mounted directly on the mounting part by means of the solder layer, wherein the solder layer has a thickness of greater than or equal to 3 μ
m, and wherein the housing has a housing part connected to the mounting part, the housing part and the mounting part have a main body composed of copper, and at least the housing part is steel-sheathed.
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Abstract
A laser diode device has a housing with a mounting part and a laser diode chip, which is based on a nitride compound semi-conductor material, in the housing on the mounting part. The laser diode chip is mounted directly on the mounting part by means of a solder layer and the solder layer has a thickness of greater than or equal to 3 μm.
36 Citations
20 Claims
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1. A laser diode device comprising:
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a housing having a mounting part; a laser diode chip based on a nitride compound semiconductor material in the housing on the mounting part, the chip having, on a substrate, semiconductor layers with an active layer for generating light and the chip having a radiation coupling-out area with a radiation coupling-out region for emitting the generated light, a rear side area situated opposite the radiation coupling-out area, and side areas connecting the radiation coupling-out area and the rear side area; and a solder layer, wherein the laser diode chip is mounted directly on the mounting part by means of the solder layer, wherein the solder layer has a thickness of greater than or equal to 3 μ
m, and wherein the housing has a housing part connected to the mounting part, the housing part and the mounting part have a main body composed of copper, and at least the housing part is steel-sheathed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A laser diode device comprising:
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a housing having a mounting part; a laser diode chip based on a nitride compound semiconductor material in the housing on the mounting part, the chip having, on a substrate, semiconductor layers with an active layer for generating light and the chip having a radiation coupling-out area with a radiation coupling-out region for emitting the generated light, a rear side area situated opposite the radiation coupling-out area, and side areas connecting the radiation coupling-out area and the rear side area; and a solder layer, wherein the laser diode chip is mounted directly on the mounting part by means of the solder layer, wherein the solder layer has a thickness of greater than or equal to 3 μ
m, and wherein the laser diode chip has a strain that endeavors to convexly deform an underside of the laser diode chip facing the mounting part, or that counteracts at least a concave deformation of the underside facing the mounting part.
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17. A laser diode device comprising:
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a housing having a mounting part; a laser diode chip based on a nitride compound semiconductor material in the housing on the mounting part, the chip having, on a substrate, semiconductor layers with an active layer for generating light and the chip having a radiation coupling-out area with a radiation coupling-out region for emitting the generated light, a rear side area situated opposite the radiation coupling-out area, and side areas connecting the radiation coupling-out area and the rear side area; and a solder layer, wherein the laser diode chip is mounted directly on the mounting part by means of the solder layer, wherein the solder layer has a thickness of greater than or equal to 3 μ
m, and wherein the laser diode chip has, in an underside facing the mounting part, at least one anchoring element for the solder layer, the at least one anchoring element being formed by a depression or elevation. - View Dependent Claims (18, 19)
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20. A laser diode device comprising:
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a housing having a mounting part; a laser diode chip based on a nitride compound semiconductor material in the housing on the mounting part, the chip having, on a substrate, semiconductor layers with an active layer for generating light and the chip having a radiation coupling-out area with a radiation coupling-out region for emitting the generated light, a rear side area situated opposite the radiation coupling-out area, and side areas connecting the radiation coupling-out area and the rear side area; and a solder layer, wherein the laser diode chip is mounted directly on the mounting part by means of the solder layer, wherein the solder layer has a thickness of greater than or equal to 3 μ
m, wherein the laser diode chip has a metallization on the side areas, and wherein the laser diode chip has, on a top side facing away from the mounting part, at least one depression that extends from the rear side area to the radiation coupling-out area and that is covered with a passivation.
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Specification