SAN FRANCISCO — On the heels of a plaintiff-friendly ruling in the TFT-LCD antitrust litigation, a group of manufacturer defendants is poised to settle for $539 million.

Co-lead plaintiffs’ counsel Francis Scarpulla of Zelle Hofmann Voelbel & Mason and Joseph M. Alioto of Alioto Law Firm filed a motion for preliminary settlement approval on behalf of indirect purchaser plaintiffs and state attorneys general on Friday. They asked U.S. District Judge Susan Illston to sign off on a deal to resolve price-fixing claims against Samsung, Hitachi, Sharp, Chimei, Chunghwa, Epson and HannStar.