Twisted nematic liquid crystal display device

Details Twisted nematic liquid crystal display device Twisted nematic liquid crystal display device

G - Physics

02

F

345/8

G02F 1/133 (2006.01) G02F 1/139 (2006.01)

Patent

CA 2002427

ABSTRACT The disclosure describes the provision of a normally black type twisted nematic liquid crystal display device which, with variation in the visual angle, variation in contrast and background color is small. In effecting this the product of the thickness d of the liquid crystal layer between electrodes and the double refraction index of the liquid crystal layer concerned lies between 1.4 µm and 1.7 µm.

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