O2Micro International Limited designs, develops and markets integrated circuits for power management and security applications, as well as systems security solutions. The Company focuses its product design efforts on integrated circuits for consumer electronics, computer, industrial and communications products, including liquid crustal display (LCD) computer monitors, LCD televisions, notebook computers, Internet security devices, global positioning system (GPS), mobile phones and portable digital versatile disc (DVD) players. Its integrated circuit products manage and provide power for LCD lighting, provide connections between notebook computers and external plug-in cards provide Internet security, control and monitor battery charging and discharging, direct current (DC)/direct current (DC) conversion, and provide select and switch functionality between power sources.