Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1996-10-31
1999-07-27
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349110, 349117, 349119, G02F 11335, G02F 11333
Patent
active
059299550
ABSTRACT:
Color distortion in Liquid Crystal Displays arises because, in addition to rotating the plane of polarization, liquid crystals are birefringent. This causes the emergent light to become elliptically polarized, the extent varying with wavelength, thereby upsetting the color balance. Prior art solutions to this involve use of a single birefringent layer to compensate for this. This approach is only partly successful. The present invention improves the color balance still further by providing a separate set of microcompensators for each primary color that comprises the display. By this means, an exact match between the color distortion introduced by the liquid crystal layer and the phase compensation needed to correct this can be made for each primary color separately. Several different arrangements of the micro color filters of the display and their corresponding microcompensators are shown and a cost effective method for manufacturing these structures is described.
REFERENCES:
patent: 4632514 (1986-12-01), Ogwasa et al.
patent: 5136405 (1992-08-01), Wada et al.
patent: 5380459 (1995-01-01), Kanemoto et al.
patent: 5402141 (1995-03-01), Haim et al.
patent: 5499126 (1996-03-01), Abileah et al.
C.L. Koo et al, "Crucial Influences of K.sub.33 /K.sub.11 Ratio on Viewing Angle of Display Mode Using a Bend-Aligment Liquid-Crystal Cell with a Compensator" in Appl Phy Letters, vol. 68, Mar. 1996, pp. 1461-1463.
T. Miyashita et al, "Wide-Viewing Angle Display Mode Using Bend-Alignment Liquid Crystal Cell", in JPN Journal Appl. Physics, vol. 34, Feb. 1995, pp. L177-L179.
Hsieh Ting-Chiang
Kuo Chen-Lung
Ackerman Stephen B.
Industrial Technology Research Institute
Ngo Julie
Saile George O.
Sikes William L.
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