LG Latest TV Maker Accused of Infringing Polaris Patents on LED Backlight Technology

LG TVs use dimming-control technologies that infringe two Polaris PowerLED patents for manipulating screen brightness through LED backlights, alleged a complaint (in Pacer) Tuesday in U.S. District Court in Santa Ana, California. Polaris owns patents 7,239,087, granted July 2007, and 8,223,117, issued July 2012, that were originally assigned to Microsemi, said the complaint. An LG spokesperson declined comment Tuesday. Microsemi ceased to exist after Microchip Technology bought it for $10 billion cash in May 2018. Court records show Polaris has several complaints pending in Santa Ana dating to September 2018 that allege Vizio and its contract manufacturers AmTran, Foxconn, TPV and Wistron are infringing the same two patents. Polaris also sued Samsung two years ago in U.S. District Court in Marshall, Texas, over the same patents. They settled last summer.