Liquid crystal display

A supertwisted nematic liquid crystal display comprising:

• a pair of substrates each having a liquid crystal orientation-controlling layer and a transparent electrode;
• a liquid crystal material held between said substrates;
• and
• at least one polarizing sheet provided on at least one of said substrates, wherein said liquid crystal material comprises:
• (a) a compound represented by formula (I):
• 18
• wherein R1 represents an alkyl group having 1 to 16 carbon atoms, an alkenyl group having 2 to 16 carbon atoms, an alkenyloxy group having 3 to 16 carbon atoms;
• and X1 represents a hydrogen atom or a fluorine atom;
• and
• (b) at least one compound selected from the group consisting of:
• compounds represented by formula (II):
• 19
• wherein R2 represents a fluorine-substituted or unsubstituted alkyl group having 1 to 16 carbon atoms, a fluorine-substituted or unsubstituted alkoxy group having 1 to 16 carbon atoms, an alkenyl group having 2 to 16 carbon atoms, an alkoxyalkyl group having 2 to 16 carbon atoms, or an alkenyloxy group having 3 to 16 carbon atoms;
• and compounds represented by formula (III):
• 20
• wherein R3 has the same meaning as R2,
• wherein said liquid crystal display satisfies:
• condition formula (i):
• 5 | V th ⁡ ( - 20 ⁢ ° ⁢ ⁢ C . ) - V th ⁡ ( 50 ⁢ ° ⁢ ⁢ C . ) 70 ⁢ ° ⁢ ⁢ C . | ≦ 3 ⁢ m ⁢ ⁢ V / ° ⁢ ⁢ C . ( i )
• wherein Vth (−20° C.) and Vth (50° C.) represent the threshold voltage of the liquid crystal display measured at a temperature of −20° C. and 50° C., respectively, with an applied voltage having a square wave form and a frequency of 100 Hz;
• and
• condition formula (ii):
• 6 | V th ⁡ ( 5000 ⁢ Hz ) - V th ⁡ ( 100 ⁢ ⁢ Hz ) V th ⁡ ( 100 ⁢ Hz ) | ≦ 0.3 ( ii )
• wherein Vth (5000 Hz) and Vth (100 Hz) represent the threshold voltage of the liquid crystal display measured at −20° C. with an applied voltage having a square wave form and a frequency of 5000 Hz and 100 Hz, respectively.