ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,031, issued on May 6, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).
"Semiconductor device" was invented by Atsushi Umezaki (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "One of the objects is to improve display quality by reduction in malfunctions of a circuit. In a driver circuit formed using a plurality of pulse output circuits having first to third transistors and first to fourth signal lines, a first clock signal is supplied to the first signal line; a preceding stage signal is supplied to the second signal line; a second clock signal is supplied to the third signal line; an output signal is output fr...