Display device, electronic apparatus using the same and light guider for display devices
First Claim
1. A display device characterized by comprising:
- a liquid crystal panel in which a transmissive polarization axis is variable;
first and second polarized light splitting plates located on both sides of said liquid crystal panel to interpose said liquid crystal panel therebetween;
a reflecting layer located on the opposite side to said liquid crystal panel with respect to said second polarized light splitting plate;
a light source;
a light guider interposed between said second polarized light splitting plate and said reflecting layer for guiding light from said light source so that said light is incident through said second polarized light splitting plate on said liquid crystal panel and further for allowing transmission of light from said second polarized light splitting plate side and transmission of light from said reflecting layer side; and
a front scatterplate interposed between said liquid crystal panel and said reflecting layer for scattering forwardly each of light from said reflecting layer side toward said liquid crystal panel side and light from said liquid crystal panel side toward said reflecting layer side.
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Accused Products
Abstract
A TN liquid crystal 140 is used as a liquid crystal panel, and a polarizer 130 is provided above the TN liquid crystal 140 while a polarizer 135, a light scattering layer 150 and a polarized light splitter 160 are provided in this order under the TN liquid crystal 140. Furthermore, under the polarized light splitter 160, there is provided a light guide 190 for introducing light of a light source 191 from under the polarized light splitter 160 and a reflecting plate 200. The polarized light splitter 160 is a reflecting polarizer which can accomplish the effective utilization of light so that extremely bright reflective and transmissive displays are obtainable. Additionally, since a light diffusing layer 150 is provided, even if the distance from the TN liquid crystal 140 to the reflecting plate 200 is prolonged, in the reflective display, no double image nor display bleeding occurs.
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Citations
23 Claims
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1. A display device characterized by comprising:
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a liquid crystal panel in which a transmissive polarization axis is variable;
first and second polarized light splitting plates located on both sides of said liquid crystal panel to interpose said liquid crystal panel therebetween;
a reflecting layer located on the opposite side to said liquid crystal panel with respect to said second polarized light splitting plate;
a light source;
a light guider interposed between said second polarized light splitting plate and said reflecting layer for guiding light from said light source so that said light is incident through said second polarized light splitting plate on said liquid crystal panel and further for allowing transmission of light from said second polarized light splitting plate side and transmission of light from said reflecting layer side; and
a front scatterplate interposed between said liquid crystal panel and said reflecting layer for scattering forwardly each of light from said reflecting layer side toward said liquid crystal panel side and light from said liquid crystal panel side toward said reflecting layer side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 13, 18, 20)
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9. A display device characterized by comprising:
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a liquid crystal panel in which a transmissive polarization axis is variable;
first and second polarized light splitting plates located on both sides of said liquid crystal panel to interpose said liquid crystal panel therebetween;
a reflecting layer located on the opposite side to said liquid crystal panel with respect to said second polarized light splitting plate;
a light source; and
a light guider located between said second polarized light splitting plate and said reflecting layer for guiding light from said light source through said second polarized light splitting plate to said liquid crystal panel and further for allowing transmission of light from said second polarized light splitting plate side and light from said reflecting layer side, with said light guider having an optical anisotropy which is so low that it hardly has influence on display chrominance non-uniformity or with said light guider having a constant optical axis direction. - View Dependent Claims (10, 11, 12, 14, 15, 16, 17, 19, 21)
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22. A light guider for a display device, characterized by having an optical anisotropy so low in a plane as to exert little influence on display chrominance non-uniformity when used for a display device.
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23. A light guider for a display device, characterized by having a constant optical axis direction.
Specification