THz-wave generation /detection modules and devices including the same
First Claim
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1. A THz-wave generation/detection module comprising:
- a photomixer chip comprising an active layer, an antenna, and a plurality of electrode pads;
a lens disposed on the photomixer chip;
a Printed Circuit Board (PCB) comprising a plurality of solder balls connected to the electrode pads, under the photomixer chip; and
a package surrounding a bottom and side of the PCB, and dissipating heating of the active layer, which is transferred from the electrode pads of the photomixer chip to the PCB, to outside,wherein the PCB further comprises;
a substrate body having a first center hole at a center thereof, and having a first outer hole at an edge of the first center hole;
a plurality of via electrodes vertically connected to the solder balls, in the substrate body; and
a plurality of ground plates horizontally connected to the via electrodes.
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Abstract
Provided are a THz-wave generation/detection module and a device including the same, which increase heating efficiency and are miniaturized. The module includes a photomixer chip, a lens, a PCB, and a package. The photomixer chip includes an active layer, an antenna, and a plurality of electrode pads. The lens is disposed on the photomixer chip. The PCB includes a plurality of solder balls connected to the electrode pads, under the photomixer chip. The package surrounds a bottom and side of the PCB, and dissipates heating of the active layer, which is transferred from the electrode pad of the photomixer chip to the PCB, to outside.
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Citations
14 Claims
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1. A THz-wave generation/detection module comprising:
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a photomixer chip comprising an active layer, an antenna, and a plurality of electrode pads; a lens disposed on the photomixer chip; a Printed Circuit Board (PCB) comprising a plurality of solder balls connected to the electrode pads, under the photomixer chip; and a package surrounding a bottom and side of the PCB, and dissipating heating of the active layer, which is transferred from the electrode pads of the photomixer chip to the PCB, to outside, wherein the PCB further comprises; a substrate body having a first center hole at a center thereof, and having a first outer hole at an edge of the first center hole; a plurality of via electrodes vertically connected to the solder balls, in the substrate body; and a plurality of ground plates horizontally connected to the via electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A THz-wave generation/detection device comprising:
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an optical fiber transferring a pulse or continuous wave laser beam having a plurality of wavelengths; an optical fiber assembly module fixing an end of the optical fiber; and a THz-wave generation/detection module, wherein the THz-wave generation/detection module comprises; a photomixer chip comprising an active layer generating a THz wave from the pulse or continuous wave laser beam in the optical fiber fixed in the optical fiber assembly module, an antenna, and a plurality of electrode pads; a lens disposed on the photomixer chip; a Printed Circuit Board (PCB) comprising a plurality of solder balls connected to the electrode pads, under the photomixer chip facing the lens; a package surrounding a bottom and side of the PCB, and dissipating heating of the active layer, which is transferred from the electrode pads of the photomixer chip to the PCB, to outside; a ferrule aligning the optical fiber in the optical fiber fixing module; and an aspherical lens focusing the pulse or continuous wave laser beam, which is emitted from the optical fiber aligned in the ferrule, to the active layer, wherein the optical fiber assembly module comprises; first to third housings fixing the ferrule and the aspherical lens; a boot connected to the first housing; and a connection ring fixing the third housing to the lower package. - View Dependent Claims (13, 14)
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Specification