Number | Name | Date | Kind |
---|---|---|---|
3773747 | Steinstrasser | Nov 1973 | |
3781088 | Tsukamoto et al. | Dec 1973 | |
3792915 | Oh et al. | Feb 1974 | |
3815972 | Hsieh | Jun 1974 | |
3819531 | Saeva et al. | Jun 1974 | |
3836478 | Green et al. | Sep 1974 | |
3876286 | Deutscher et al. | Apr 1975 | |
3881806 | Suzuki | May 1975 | |
3891307 | Tsukamoto et al. | Jun 1975 | |
3915883 | Van Meter et al. | Oct 1975 | |
3919105 | Katagiri et al. | Nov 1975 |
Number | Date | Country |
---|---|---|
807,165 | Mar 1974 | BE |
814,291 | Aug 1974 | BE |
2,139,628 | Feb 1973 | DT |
2,306,738 | Aug 1973 | DT |
2,327,036 | Dec 1973 | DT |
2,306,739 | Aug 1973 | DT |
2,024,269 | Dec 1971 | DT |
49-88791 | Aug 1974 | JA |
Entry |
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Raynes, E. P., "Improved Contrast Uniformity in Twisted Nematic Liquid Crystal Electro-Optic Display Devices"; |