- O-film Tech [Shenzhen O-film Tech Co., Ltd. ] touch panels
- O2 Micro mixed signal communication chips
- O2IC Co., Ltd. McRam memories
- Oak Technology Inc. CDROM controllers, MPEG decoders, acceleration ICs, audio ICs
• acquired by Zoran Corp.
• Zoran acquired by CSR [Cambridge Silicon Radio]
• CSR mobile business unit acquired by Samsung Electronics Co., Ltd.
• wireless broadband business acquired by Conexant Systems Inc.
• optical storage business acquired by Sunplus Technology Co.
- Oasis Semiconductor asics
- Oasis SiliconSystems AG multimedia
• acquired by SMSC [Standard Microsystems Corporation]
• now part of Microchip Technology Inc.
- Oclaro Inc. laser diodes, transceivers
• Semiconductor Laser Business unit acquired by II-VI Incorporated
- Octalica communications
• acquired by Broadcom Limited
- Octasic Semiconductor Inc. communications
- Oculi, Inc. 3D sensor processors
- OCZ Technology Group Inc. SSD Flash controllers
- OEMSensors.com [a division of Monnit Corp.] wireless sensors
- OEpic Inc optival communications
- OIC [Optronics International Corp.] LEDs, Laser diodes
- Okaya Electric Industries Co., Ltd. displays, LED sensors, noise suppression, capacitors, coils
- Oki Semiconductor Co., Ltd.
• now
LAPIS Semiconductor Co. Ltd
• acquired by Rohm Semiconductor Inc.
• RF and baseband technology business line acquired by Wipro Technologies Ltd.
- Okmetic Oyj silicon wafers
- OLiGHTEK Opto-Electronic Technology Co., Ltd. [Yunnan] OLED displays & drivers
- Oligon Ltd.
• acquired by Wolfson Microelectronics PLC
- OMC [Optoelectronic Manufacturing Corporation] optoelectronics, LEDs, Fibre Optics
- Omiino FPGA-based silicon for telecommunications equipment
• acquired by Xilinx Inc.
- OMMIC optical networking products
- Omni Design Technologies, Inc. low power IP cores
- Omnitek FPGA IP cores
• acquired by Intel Corporation
- Omnirel Power ICs
• acquired by International Rectifier Corporation
• acquired by Infineon Technologies AG
- OmniVision image capture devices, image sensors
- ON Semiconductor analog, logic, discrete
• transient voltage suppression (TVS) diodes, switching thyristors and insulated gate bipolar transistors (IGBT) for automotive ignition applications acquired by Littlefuse Inc.
- On-Bright Electronics Co., Ltd. analog and mixed-signal ICs
- On2 Technologies Inc. codecs
- One RF
• acquired by Telit Communications S.p.A.
- One Silicon Chip Photonics [OSCP] optical MEMS Sensors
- One Stop Displays [OSD Displays] OLED & TFT displays
- OneChip Photonics Inc. optical transceivers
- Onex Communications Corporation communications
• acquired by TranSwitch
- OneTree Microdevices, Inc. amplifiers for broadband networks
• acquired by Analog Devices Inc. [ADI]
- ONF [Open Networking Foundation] Mobile and Broadband Platform Development, open source components
- Onix Microsystems Inc. optical switching
- Opal Kelly Incorporated FPGA modules
- Open-Silicon Inc. ASICs
- Open Garden Inc. communications
- Open Networking Foundation [ONF] Mobile and Broadband Platform Development, open source components
- Open Solution Inc. digital communications
- OpenHW Group open-source RISC-V cores
- OpenLight open market silicon photonics platform
- OpenSingularity Foundation [Skynet] blockchain chips, IoT networks
- Oplink Communications Inc.
• acquired by Avanex Corporation
- Oplus Technologies Ltd. display and video processors
• acquired by Intel Corp.
- OpNext fiber optics, transmitter, receivers, transceivers
- OPPO mobile chips, communications
- Opsys Limited
• OLED business line acquired by Cambridge Display Technology Ltd. [CDT]
- Optalysys Ltd. optical computing technologies, Fully Homomorphic Encryption (FHE)
- Optek Technology sensors
- Optera displays, touch panels
- Opteran Technologies Limited biological systems on silicon
- OPTI Inc. processors & PC peripherals, audio ICs, graphic ICs
• acquired by Opti Technologies Inc.
- Optichron Inc. wireless communications
• acquired by NetLogic Microsystems Inc.
- Opticomp Corporation optoelectronics
- Optimum Semiconductor Technologies [OST] communications
• also known as DSP Technologies Inc. [Wuxi DSP Technologies]
- OptiSolar Inc. thin film solar systems
- Optiworks Inc. fiber optic components
- Opto 22 solid-state relays
- Opto Diode Corp. infrared LEDs
- Opto Power Corp. laser diodes
- Opto Speed Photodiodes, LEDs, Laser
• check Opto Speed Switzerland too!
- Opto Tech Corporation [OPTOTECH] LED & silicon sensor chips, photo coupler SoC
• Opto Tech Corporation changed name to Taiwan Asia Semiconductor Corporation [TASC]
- Optocap Ltd. microelectronic and optoelectronic assembly
• a company of ALTER Technology
- Optoelectronic Manufacturing Corporation [OMC] optoelectronics, LEDs, Fibre Optics
- OptoElectronix, Inc. LEDs/LI>
- Optogan Oy LEDs, solid state lamps
- Optolab Microsystems GmbH linedrivers, encoders
- Optomai Inc. fiber optic networks
• acquired by MACOM Technology Solutions Holdings, Inc.
- Optoscribe Ltd. 3D waveguide technology for optical communications
- Optosupply Technologies Ltd. LEDs
- OPTOTECH [Opto Tech Corporation] LED & silicon sensor chips, photo coupler SoC
• Opto Tech Corporation changed name to Taiwan Asia Semiconductor Corporation [TASC]
- OptoTek LEDs
- Optoway Inc. VCSELs
- OPTOWELL Co., Ltd. GaAs-based VCSEL, GaAs PIN PD, RCLED & UHB LED's wafer
- Optronics International Corp. [OIC] LEDs, Laser diodes
- OpTun Inc. optical circuits
- Opulan Technologies Corp. communications
• acquired by Atheros Communications Inc.
- OQC [Oxford Quantum Circuits] quantum technologies
- Orange Tree Technologies Ltd embedded USB & Ethernet interfaces
- Orbbec 3D Technology International Inc. 3D sensors, AI chips
- Orbit Semiconductor FPGA, gate arrays
• acquired by Flextronics Semiconductor
• acquired by AMI Semiconductor Inc.
• acquired by ON Semiconductor
- Orbita Embedded [Zhuhai Orbita Control Engineering Co., Ltd. ] processors, bus controllers
- Orca Systems Incorporated digital RF receivers
- Oren Semiconductor digital TV, broadband communications
• acquired by Zoran
• Zoran acquired by CSR [Cambridge Silicon Radio]
• CSR mobile business unit acquired by Samsung Electronics Co., Ltd.
- Orient Display Limited LCD displays
- Orient Semiconductor Electronics [OSE]
- Orise Technology Co., Ltd. display drivers
• acquired by FocalTech Systems Ltd.
- ORO Logic
• now Vitesse
• Vitesse Semiconductor Corp. acquired by Microsemi Corp.
• Microsemi Corporation acquired by Microchip Technology Inc.
- Ortel Corp. optoelectronics
• check Emcore Corporation
- Ortus Technology Co., Ltd. [ORTUSTECH] LCD displays
- OSA-Elektronik GmbH
• acquired by OSA Opto Light GmbH
- OSA Opto Light GmbH LED's
- OSCP [One Silicon Chip Photonics] optical MEMS Sensors
- OSD Displays [One Stop Displays] OLED & TFT displays
- OSRAM Automotive Lighting Systems GmbH [AMLS] automotive lighting
• acquired by Plastic Omnium
- OSRAM Continental GmbH LED & Laser Technologies
• acquired by ams OSRAM
- Osram Opto Semiconductors LEDs, infrared diodes, high power laser diodes, intelligent displays
• please check ams OSRAM too!
- Ossia Inc. wireless power distribution
- OST [Optimum Semiconductor Technologies] communications
• also known as DSP Technologies Inc. [Wuxi DSP Technologies]
- Ostendo Technologies, Inc. micro-LED displays
- otego organic thermoelectric generators
- OTI [Ours Technology Inc.] images and communications, LiDAR sensors
- OTM Technologies Ltd. optical sensors
- Ours Technology Inc. [OTI] images and communications, LiDAR sensors
- Ouster Inc. lidar sensors
- Ovonyx Inc. phase-change semiconductor memory technology
- Owl Autonomous Imaging, Inc. High-Definition 3D thermal Imaging
- Oxbotica Ltd. autonomous driving
- Oxford Ionics Ltd. Electronic Qubit Control (EQC) chips
- Oxford Micro Devices DSP
- Oxford Photovoltaics Ltd. screen-printable solar cells
- Oxford Quantum Circuits [OQC] quantum technologies
- Oxford Semiconductor UART
- OXLEY LEDs
• check Oxley Components too!
- OZ Optics Ltd. optical networks
- Ozmo Devices Inc. wireless personal area network (WPAN) connectivity
- OZtech ASICs
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