U.S. Philips Corporation

Henricus G Koopman

Hendrik Adrianus Van Sprang

Franciscus J Wortel

By a suitable choice of a retardation foil with a specific value of .DELTA.n (.lambda.) it is possible to make the transmission/voltage characteristic curves for, for example, red, green and blue light extend parallel in an ECB display. The same type of display can then be used for modulating three colors, with modulation voltages shifted for each color.

Display device having wavelength-dependent birefringence compensation

A display cell which contains a liquid crystalline compound having a tilted orientation and a tilt angle of 8.degree.-50.degree., in which an orientation layer is used of a cyclo-aliphatic polyether.

Growing community of inventors

Eindhoven, Netherlands

Henricus G Koopman