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Patent
G - Physics
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G02F 1/13 (2006.01) G02F 1/13363 (2006.01) G02F 1/139 (2006.01) G02F 1/133 (2006.01) G02F 1/1335 (2006.01)
Patent
CA 1086843
ABSTRACT: The display device according to the invention uses a cell with liquid crystal provided between polar- isers. The polarising means and analysing means are constructed and positioned so that the light transmission is zero at a voltage Vm on the cell, said voltage Vm being larger than the voltage which corresponds to the optical threshold of the cell. The transmission of the cell as a function of the supplied voltage increases considerably above the voltage value Vm. The device is controlled by means of signal voltages which exceed Vm and which show a small voltage swing, while simul- taneously a strong light transmission and a good con- trast are obtained, which permits of using an informa- tion addressing according to lines and columns when a large number of lines are used.
282280
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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