Liquid crystal display apparatus
First Claim
1. A liquid crystal display apparatus comprising:
- a first substrate;
a second substrate;
a reflective polarizer, mounted on said first substrate and having a first transmission axis and a first reflection axis at right angles to each other, for transmitting linearly polarized light vibrating in a plane parallel to said first transmission axis and for reflecting linearly polarized light vibrating in a plane parallel to said first reflection axis;
a polarizer, mounted on said second substrate and having a second transmission axis, for transmitting linearly polarized light vibrating in a plane parallel to said second transmission axis; and
a liquid crystal layer provided between said first and second substrates, and having a first mode which causes the direction of polarization of incident light to change by utilizing birefringence and a second mode which does not utilize birefringence and therefore does not cause the direction of polarization of incident light to change, whereinsaid liquid crystal layer maintains first and second stable states in the absence of an applied voltage, and one of said first and second stable states is set as said second mode,a display state is switched between a bright display state and a dark display state by applying a voltage to said liquid crystal layer, andsaid bright display state is produced by driving said liquid crystal layer in said second mode.
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Abstract
The liquid crystal display apparatus according to the present invention includes a first substrate, a second substrate, a reflective polarizer, mounted on the first substrate and having a first transmission axis and a first reflection axis at right angles to each other, for transmitting linearly polarized light vibrating in a plane parallel to the first transmission axis and for reflecting linearly polarized light vibrating in a plane parallel to the first reflection axis, a polarizer, mounted on the second substrate and having a second transmission axis, for transmitting linearly polarized light vibrating in a plane parallel to the second transmission axis, and a liquid crystal layer, provided between the first and second substrates, having a first mode which causes the direction of polarization of incident light to change by utilizing birefringence and a second mode which does not utilize birefringence and therefore does not cause the direction of polarization of incident light to change, wherein a display state is switched between a bright display state and a dark display state by applying a voltage to the liquid crystal layer, and the bright display state is produced by driving the liquid crystal layer in the second mode.
119 Citations
13 Claims
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1. A liquid crystal display apparatus comprising:
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a first substrate; a second substrate; a reflective polarizer, mounted on said first substrate and having a first transmission axis and a first reflection axis at right angles to each other, for transmitting linearly polarized light vibrating in a plane parallel to said first transmission axis and for reflecting linearly polarized light vibrating in a plane parallel to said first reflection axis; a polarizer, mounted on said second substrate and having a second transmission axis, for transmitting linearly polarized light vibrating in a plane parallel to said second transmission axis; and a liquid crystal layer provided between said first and second substrates, and having a first mode which causes the direction of polarization of incident light to change by utilizing birefringence and a second mode which does not utilize birefringence and therefore does not cause the direction of polarization of incident light to change, wherein said liquid crystal layer maintains first and second stable states in the absence of an applied voltage, and one of said first and second stable states is set as said second mode, a display state is switched between a bright display state and a dark display state by applying a voltage to said liquid crystal layer, and said bright display state is produced by driving said liquid crystal layer in said second mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification