Optical efficiency enhancing film and liquid crystal display using the same
First Claim
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1. An optical efficiency enhancing film for a liquid crystal display device, comprising:
- uniaxial films made of a refractive index anisotropic material; and
isotropic films, wherein the uniaxial films and the isotropic films are alternatively laminated.
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Abstract
The present invention relates to an optical efficiency enhancing film and an LCD using the same. The LCD of the present invention is provided with an optical efficiency enhancing film that includes uniaxial films made of a refractive index anisotropic material and isotropic films, wherein the uniaxial films and the isotropic films are alternatively laminated. Then, optical efficiency as well as polarization may be enhanced to thereby improve the brightness of the LCD.
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Citations
17 Claims
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1. An optical efficiency enhancing film for a liquid crystal display device, comprising:
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uniaxial films made of a refractive index anisotropic material; and
isotropic films, wherein the uniaxial films and the isotropic films are alternatively laminated. - View Dependent Claims (2)
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3. An optical efficiency enhancing film for a liquid crystal display device, comprising:
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a first film of a refractive index anisotropic material; and
a second film on the first film, wherein the first film and the second film are alternately arranged. - View Dependent Claims (4, 5, 6)
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7. A liquid crystal display device, comprising:
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a lower substrate provided with pixel regions defined by gate lines and data lines, and thin film transistors arranged in matrix configuration;
an upper substrate corresponding to the lower substrate and provided with a color filter layer consisting of a plurality of color filter patterns to represent colors;
a liquid crystal layer interposed between the upper substrate and lower substrate;
a first polarization plate disposed on the lower substrate, capable of passing linearly polarizing natural light;
a second polarization plate disposed on the upper substrate and having an optical transmission axis perpendicular to that of the first polarization plate; and
an optical efficiency enhancing film formed on the lower substrate and having an optical transmission axis substantially identical to that of the first polarization plate. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An optical efficiency enhancing film, comprising:
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a first uniaxial film including a refractive index anisotropic material;
an intermediate film on the first uniaxial film; and
a second uniaxial film including a refractive index anisotropic material. - View Dependent Claims (15, 16, 17)
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Specification