ALEXANDRIA, Va., July 21 -- United States Patent no. 12,688,837, issued on July 21, was assigned to Ohio State Innovation Foundation (Columbus, Ohio).

"Pixel circuits for liquid crystal on silicon phase modulator" was invented by Chongchang Mao (Chapel Hill, N.C.), Lianhua Ji (Erie, Colo.) and Kristina Johnson (Bexley, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a frame buffer pixel circuit having a first data pass gate transistor G1, first storage capacitor C1, a voltage boosting line Vb, source follower transistor F, pull-down transistor P, and second data pass gate transistor G2. The pull-down transistor P is connected to the drain of transistor F and source of transistor G2 an...