Inventor
HARTMANN WILBERT J A M
NL7 patents
Patents
7 patentsUS5404236AApr 4, 1995
Display device with crossing electrodes with specific ratio for gray scale
PHILIPS CORP27 citations92
US4840462AJun 20, 1989
Method of driving a ferroelectric liquid crystal display device and associated display device to achieve gray scale
PHILIPS CORP48 citations91
US5151804ASep 29, 1992
Ferroelectric liquid crystal display having a spread of angles for grayscale and method of manufacture
PHILIPS CORP35 citations86
US5208689AMay 4, 1993
Electro-optic display device with increased number of transmission levels
PHILIPS CORP19 citations81
US4976515ADec 11, 1990
Method of driving a ferroelectric to display device to achieve gray scales
PHILIPS CORP22 citations80
US5047758ASep 10, 1991
Method of driving a passive ferro-electric liquid crystal display device
PHILIPS CORP9 citations73
US5805131ASep 8, 1998
Ferroelectric display device with temperature compensation
PHILIPS CORP9 citations65