Liquid crystal display device
First Claim
1. A liquid crystal display device comprising:
- a liquid crystal display medium including a pair of first and second polarizing plates; and
a liquid crystal layer between the first and second polarizing plates, the second polarizing plate being provided on a display surface side;
polarization selective reflection means, provided on a side of the first polarizing plate so as to face the liquid crystal display medium, for transmitting a light component in a first polarization status of surrounding light incident on a first surface of the polarization selective reflection means opposite to a second surface of the polarization selective reflection means on a side of the liquid crystal display medium, and for reflecting a light component in a second polarization status of the surrounding light incident on the first surface, the second polarization status being different from the first polarization status;
light irradiating means, provided between the polarization selective reflection means and the liquid crystal display medium, for irradiating the liquid crystal display medium with light from a light source; and
an enclosure which covers an outer surface of the liquid crystal display device, the enclosure including (i) a display window on a surface thereof facing to the liquid crystal display medium and (ii) a light inlet window on a surface thereof facing to the polarization selective reflection means of the enclosure.
1 Assignment
0 Petitions
Accused Products
Abstract
A liquid crystal display device includes, from its back surface side towards its front surface side: a polarization selective reflection plate (12) which reflects x-directional linearly polarized light and transmits y-directional linearly polarized light; a first polarizing plate (4) which transmits the x-directional linearly polarized light; a liquid crystal display panel (13); and a second polarizing plate (8) which transmits the y-directional linearly polarized light. The polarization selective reflection plate (12) is arranged only on a back surface side of the liquid crystal display panel (13). The y-directional linearly polarized light incident on the back surface side is reflected from the polarization selective reflection plate (12), there by protecting privacy. The x-directional linearly polarized light transmitted reaches the front surface side, via the first polarizing plate (4), the liquid crystal display panel (13), and the second polarizing plate (8). In this way, it is possible to realize a liquid crystal display device which is capable of performing a good screen displaying even under a strong surrounding light environment.
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Citations
7 Claims
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1. A liquid crystal display device comprising:
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a liquid crystal display medium including a pair of first and second polarizing plates; and
a liquid crystal layer between the first and second polarizing plates, the second polarizing plate being provided on a display surface side;polarization selective reflection means, provided on a side of the first polarizing plate so as to face the liquid crystal display medium, for transmitting a light component in a first polarization status of surrounding light incident on a first surface of the polarization selective reflection means opposite to a second surface of the polarization selective reflection means on a side of the liquid crystal display medium, and for reflecting a light component in a second polarization status of the surrounding light incident on the first surface, the second polarization status being different from the first polarization status; light irradiating means, provided between the polarization selective reflection means and the liquid crystal display medium, for irradiating the liquid crystal display medium with light from a light source; and an enclosure which covers an outer surface of the liquid crystal display device, the enclosure including (i) a display window on a surface thereof facing to the liquid crystal display medium and (ii) a light inlet window on a surface thereof facing to the polarization selective reflection means of the enclosure. - View Dependent Claims (4, 6)
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2. A liquid crystal display device comprising:
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a liquid crystal display medium including a pair of first and second polarizing plates; and
a liquid crystal layer between the first and second polarizing plates, the second polarizing plate being provided on a display surface side;polarization selective reflection means, provided on a side of the first polarizing plate so as to face the liquid crystal display medium, for transmitting a light component in a first polarization status of surrounding light incident on a first surface of the polarization selective reflection means opposite to a second surface of the polarization selective reflection means on a side of the liquid crystal display medium, and for reflecting a light component in a second polarization status of the surrounding light incident on the first surface, the second polarization status being different from the first polarization status; light irradiating means, provided between the polarization selective reflection means and the liquid crystal display medium, for irradiating the liquid crystal display medium with light from a light source; and polarization control means, provided between the polarization selective reflection means and the light irradiating means, for controlling a polarization status of light traveling from the polarization selective reflection means towards the liquid crystal display medium; and an enclosure which covers an outer surface of the liquid crystal display device, the enclosure including (i) a display window on a surface thereof facing to the liquid crystal display medium and (ii) a light inlet window on a surface thereof facing to the polarization selective reflection means of the enclosure. - View Dependent Claims (3, 5, 7)
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Specification