Granted Patent
Utility
US 6,157,426 · App. 09/023,451
Liquid crystal display with SiO.sub.x N.sub.y inclusive multilayer black matrix
Inventor:
Tieer Gu
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Feb 13, 1998
Inventor
Tieer Gu
Assignee (at issue)
OIS Optical Imaging Systems, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.