ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,436, issued on Oct. 28, was assigned to E Ink Corp. (Billerica, Mass.).

"Staged gate voltage control" was invented by Karl Raymond Amundson (Cambridge, Mass.) and Yuval Ben-Dov (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electro-optic display and driving method are disclosed. The electro-optic display includes a layer of electrophoretic material disposed between a common electrode and a backplane. The backplane includes an array of pixel electrodes, each coupled to a pixel transistor. A controller provides time-dependent voltages to the gate line, the source line, and the common electrode of each pixel transistor. The driving...