Compositions – Radioactive compositions – Nuclear reactor fuel
Patent
1987-12-29
1989-08-15
Gron, Teddy S.
Compositions
Radioactive compositions
Nuclear reactor fuel
25229961, 2522995, 25229901, 350333, 350346, 350350R, G02F 113, C09K 1934
Patent
active
048568759
ABSTRACT:
A liquid-crystal display device of the twisted nematic type which comprises (1) a pair of electrode substrates facing each other, each being provided with an orientation membrane, the surface of which is treated by rubbing, and (2) a specific nematic liquid-crystal composition having a positive dielectric anisotropy containing a pyrimidine derivative of formula (I), ##STR1## wherein R.sub.1 and R.sub.2 are each a straight-chain alkyl group of 1 to 12 carbon atoms and containing an optically active substance, sandwiched between the two electrode substrates and arranged so that the axes of the liquid-crystal molecules will be twisted by an angle .phi. in the range of 210.degree..ltoreq..phi..ltoreq.300.degree., which shows excellent multiplex driving characteristics and suitable for use in display units of heavy-duty multiplex driving type.
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patent: 4764636 (1988-08-01), Sasaki et al.
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Saito, S., et al., Mol. Cryst. Liq. Cryst., vol. 139 (1-2), pp. 171-187 (1986).
Leenhouts, F., et al., J. Appl. Phys., vol. 60 (9), pp. 3275-3281 (11/1/86).
Scheffer, T. J., et al., J. Appl. Phys., vol. 58 (8), pp. 3022-3031 (1985).
Ichimura Yukiko
Kozaki Shyuichi
Narutako Yozo
Gron Teddy S.
Sharp Kabushiki Kaisha
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