Invention Grant
- Patent Title: Flip-chip optoelectronic device
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Application No.: US17648371Application Date: 2022-01-19
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Publication No.: US12149044B2Publication Date: 2024-11-19
- Inventor: Yee Loy Lam , Hon Yuen Aaron Sim , Lay Cheng Choo , Long Cheng Koh
- Applicant: DENSELIGHT SEMICONDUCTORS PTE LTD
- Applicant Address: SG Singapore
- Assignee: DENSELIGHT SEMICONDUCTORS PTE LTD
- Current Assignee: DENSELIGHT SEMICONDUCTORS PTE LTD
- Current Assignee Address: SG Singapore
- Agency: CHIP LAW GROUP
- Main IPC: H01S5/0234
- IPC: H01S5/0234 ; H01S5/023 ; H01S5/0237 ; H01S5/024

Abstract:
An optoelectronic device includes a semiconductor die that includes a substrate layer, a laser diode, first and second conducting pads, a cathode pad, an anode pad, and a passivation layer. The laser diode and the conducting pads are formed on the substrate layer. The formation of the conducting pads directly on the substrate layer offers an increased area for heat dissipation. The cathode pad is formed on the first conducting pad whereas the anode pad is formed above the second conducting pad. The passivation layer is formed above the laser diode. The attachment of the semiconductor die to a submount of the optoelectronic device occurs by way of the cathode pad and the anode pad. After the attachment, a free space is created directly between the passivation layer and the submount to reduce the impact of solder bonding stress on the laser diode.
Public/Granted literature
- US20220231477A1 FLIP-CHIP OPTOELECTRONIC DEVICE Public/Granted day:2022-07-21
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