ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,137, issued on Sept. 23, was assigned to LAPIS Technology Co. Ltd. (Yokohama, Japan).
"Display driver and display apparatus" was invented by Koji Yamazaki (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display driver includes a plurality of DA conversion circuits, amplifiers, and a switch circuit. Each of the DA conversion circuits outputs a gradation reference voltage in a gradation reference voltage group generated by one of gradation reference voltage generating circuits as a gradation voltage. The amplifiers each output a voltage output a voltage obtained by amplifying each gradation voltage as an output voltage. The switch c...