Optical modulating/display device and production method therefor and display apparatus mounting the optical modulating/displaying device thereon
First Claim
1. An optical modulating display device including a multilayer structure containing an optical modulating layer and a pair of first and second substrates sandwiching the multilayer structure:
- wherein at least the first substrate is constituted so that light propagates therein;
the multilayer structure is constituted so that a boundary surface between the first substrate and a low refraction layer causes total reflection of light entering into the boundary surface in an oblique direction by including the low refraction layer being lower in refractive index than the first substrate and being in direct contact with the first substrate; and
the optical modulating layer comprises a liquid crystal layer and the multilayer structure further includes a polarizing layer transmitting a specific polarized light between the low refraction layer and the liquid crystal layer.
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Accused Products
Abstract
The present invention relates to an optical modulating display device (200) such as a liquid crystal displaying device provided with a front-light type planar illuminating device.
The above front-light type planar illuminating device allows illuminating light to propagate inside a substrate (1), and is provided with a low refraction layer (3) being lower in refractive index than the substrate (1) and being in close contact with the inner surface of the substrate (1), and with reflection structure (11) on the outer surface of the substrate (1).
The optical modulating display device (200) provided with the above front-light type planar illuminating device can ensure a sufficient amount of guide light propagating inside the substrate (1) and reduce non-uniformity in display illumination.
And a display apparatus mounting the above optical modulating display device (200) thereon can be reduced in thickness and weight and provide a high quality display.
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Citations
64 Claims
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1. An optical modulating display device including a multilayer structure containing an optical modulating layer and a pair of first and second substrates sandwiching the multilayer structure:
- wherein
at least the first substrate is constituted so that light propagates therein;
the multilayer structure is constituted so that a boundary surface between the first substrate and a low refraction layer causes total reflection of light entering into the boundary surface in an oblique direction by including the low refraction layer being lower in refractive index than the first substrate and being in direct contact with the first substrate; and
the optical modulating layer comprises a liquid crystal layer and the multilayer structure further includes a polarizing layer transmitting a specific polarized light between the low refraction layer and the liquid crystal layer. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18)
- wherein
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3. (canceled)
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10. (canceled)
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19. An optical modulating display device including a multilayer structure containing an optical modulating layer and an optical propagating region having a uniform refractive index and being constituted so that light propagates therein;
- wherein
the multilayer structure is constituted so that a boundary surface between the optical propagating region and the low refraction layer causes total reflection of light entering into the boundary surface in an oblique direction by including a low refraction layer being lower in refractive index than the optical propagating region and being in direct contact with the optical propagating region; and
the optical modulating layer comprises a liquid crystal layer and the multilayer structure further includes a polarizing layer transmitting only specific polarized light between the low refraction layer and the liquid crystal layer. - View Dependent Claims (20, 21, 22, 23, 24, 25)
- wherein
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26. An liquid crystal displaying device including at least:
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a first and second substrates forming a pair, wherein at least first substrate is constituted so that light propagates therein;
a light source provided in the vicinity of a first side end of the first substrate;
a multilayer structure sandwiched between the first and second substrates, which includes at least an optical modulating layer comprising a liquid crystal layer, a low refraction layer being lower in refractive index than the first substrate and being in direct contact with the first substrate, a color filter layer transmitting light of different specific wavelength band, a polarizing layer positioned between the liquid crystal layer and the low refraction layer and transmitting only specific polarized light, and at least one or more phase difference layer; and
a reflection structure for reflecting at a right angle, or nearly right angle, to the boundary surface at least a part of light entering in an oblique direction from the first substrate at an opposite side to the low refraction layer with reference to the first substrate;
wherein a boundary surface between the first substrate and the low refraction layer causes total reflection of light entering into the boundary surface in an oblique direction. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A liquid crystal displaying device including at least:
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a first and second substrates forming a pair, wherein at least first substrate is constituted so that light propagates therein;
a light source provided in the vicinity of first side end of the first substrate;
a multilayer structure sandwiched between the first and second substrates, which includes at least an optical modulating layer comprising a liquid crystal layer, a low refraction layer being lower in refractive index than the first substrate and further being in direct contact with the first substrate, a plurality of color polarizing layers transmitting only specific polarized light of different specific wavelength band, being spatially arranged within each pixel region and being positioned between the low refraction layer and the liquid crystal layer, and at least one or more phase difference layer; and
a reflection structure for reflecting at a right angle to, or nearly right angle to, the boundary surface at least a part of light entering in an oblique direction from the first substrate at an opposite side to the low refraction layer with reference to the first substrate;
wherein a boundary surface between the first substrate and the low refraction layer causes total reflection of light entering into the boundary surface in an oblique direction. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An optical modulating display device including at least:
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a first and second substrates forming a pair, wherein at least the first substrate is constituted so that light propagates therein;
a light source provided in the vicinity of first side end of the first substrate;
a multilayer structure sandwiched between the first and second substrates, which includes an optical modulating layer comprising a liquid crystal layer, a low refraction layer being lower in refractive index than the first substrate and further being in direct contact with the first substrate, a polarizing layer positioned between the low refraction layer and the liquid crystal layer and transmitting a specific polarized light, and a charged fine particle filled layer; and
a reflection structure for reflecting at a right angle, or nearly right angle, to the boundary surface at least a part of light entering in an oblique direction from the first substrate at an opposite side to the low refraction layer with reference to the first substrate;
wherein a boundary surface between the first substrate and the low refraction layer causes total reflection of light entering into the boundary surface in an oblique direction. - View Dependent Claims (49, 50, 51, 52, 53, 54)
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55. A production method for an optical modulating display device, comprising the steps of:
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manufacturing an optical modulating device including a multilayer structure sandwiched between a first substrate constituted so that light propagates therein and a second substrate forming a counterpart to the first substrate, wherein the multilayer structure includes an optical modulating layer comprising a liquid crystal layer, a low refraction layer being in contact with the first substrate and comprising a material being lower in refractive index than the first substrate, and a polarizing layer positioned between the low refraction layer and the liquid crystal layer and transmitting only specific polarized light; and
then, forming a reflection structure for reflecting at a right angle, or nearly right angle, to the boundary surface at least a part of light entering in an oblique direction from the first substrate at an opposite side to the low refraction layer with reference to the first substrate in the optical modulating device. - View Dependent Claims (56, 57, 58, 59)
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60. A production method of a liquid crystal displaying device comprising the steps of:
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manufacturing a liquid crystal device including a first substrate constituted so that light propagates therein, a second substrate forming a counterpart to the first substrate, and a multilayer structure sandwiched between the first and second substrates which includes a liquid crystal layer, a low refraction layer being in contact with the first substrate and comprising a material being lower in refractive index than the first substrate, and a polarizing layer positioned between the low refraction layer and the liquid crystal layer and transmitting only specific polarized light; and
thereafter, forming a reflection structure for reflecting at a right angle, or nearly right angle, to the boundary surface at least a part of light entering in an oblique direction from the first substrate at an opposite side to the low refraction layer with reference to the first substrate in the liquid crystal device. - View Dependent Claims (61, 62, 63, 64)
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Specification