U.S. antitrust law calls for the fine to be tripled, but even then Toshiba doesn't anticipate it will have to pay any money. Other defendants in the class-action suit have effectively covered its fine because they have already paid more in settlements than the damages finding against Toshiba, said a spokeswoman for the company.

"Given credits for settlements by other defendants, Toshiba expects that it will not have to pay any damages as a result of this verdict, even after trebling under U.S. antitrust laws," Toshiba said in a brief statement.

Despite the court's finding, Toshiba maintained it was innocent of all charges.

"Toshiba has consistently maintained that there was no illegal activity on its part in the LCD business in the United States, and Toshiba continues to hold that view," the statement said. "While Toshiba appreciates the jury's time and effort, Toshiba believes that the jury's verdict is in error as to the finding of wrongdoing on Toshiba's part. Toshiba plans to pursue all available legal avenues to correct that finding."

Other vendors have already agreed to pay hundreds of millions of dollars to settle related class-action suits filed by consumers, government entities and other public entities, including Chimei Innolux, Chunghwa Picture Tubes, Epson Imaging Devices, HannStar Display, Hitachi Displays, Samsung Electronics and Sharp.