ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,737, issued on Jan. 20, was assigned to AGC Inc. (Tokyo).
"Glass substrate, black matrix substrate, and display panel" was invented by Hirofumi Tokunaga (Tokyo), Daisuke Kobayashi (Tokyo), Kazutaka Ono (Tokyo), Atsuyoshi Takenaka (Tokyo) and Yoshitaka Maeyanagi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a glass substrate including a pair of main surfaces and an end surface, and having a surface layer diffusion Sn atom concentration of 2.0x1018 atomic/cm3 or more and 1.4x1019 atomic/cm3 or less in at least one of the main surfaces, the surface layer diffusion Sn atom concentration being obtained by subtract...