SANTA ANA, Calif.--Microsemi Corp. here today announced that its Linfinity Division has received a second patent for design techniques that reduce the number of components needed to power lamps in liquid-crystal displays (LCDs).
The patented design aspect is contained in Linfinity's RangeMax ICs, which power cold cathode fluorescent lamps in computer monitors and displays in mobile phones. Microsemi said it believes the design technique will play a key role in adding color to displays in next-generation PDAs, Web browsers, mobile phones, and automotive applications. New ICs for these applications are under development by Linfinity.
"Taken with our recent Direct Drive Backlight System Architecture patent, this invention clearly puts RangeMax technology at the leading edge for advanced, energy-efficient solutions in powering LCD lamps," asserts James J. Peterson, vice president and general manager of the Linfinity Division. "Our RangeMax products represent a significant part of our growth strategy in creating application-specific power management ICs and modules."
Microsemi acquired Linfinity last year (see April 15, 1999, story) as part of the company's efforts to refocus its business into niche markets, said Philip Frey Jr., chairman, CEO and president of Microsemi. The company "saw the additions of the Linfinity and Narda Microwave Semiconductor product lines last year as a means to further sharpen this focus," he said. "They provide us with a foundation for Microsemi to grow in computing, broadband and wireless applications for both power management and RF/microwave semiconductors."
The Linfinity unit is now designing special versions of the RangeMax ICs for color displays in digital cameras, mobile phones and PDAs, "where we can provide efficiency and power saving of up to 30%," said Roger Holliday, vice president of marketing for the division. "We've also developed a wide-range dimming version that's specifically suited to the more stringent automotive environment."