US Patent Issued to Semiconductor Energy Laboratory on Aug. 12 for "Display apparatus, its operating method, and electronic device" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,387,680, issued on Aug. 12, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Kanagawa-ken, Japan).

"Display apparatus, its operating method, and electronic device" was invented by Susumu Kawashima (Kanagawa, Japan), Koji Kusunoki (Kanagawa, Japan), Kazunori Watanabe (Tokyo) and Satoshi Yoshimoto (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A display apparatus having a wide range of threshold voltage compensation function is provided. In the display apparatus, a p-channel transistor is used as a driving transistor of the light-emitting device. Discharging is performed through a source-drain path while constant voltage is suppl...