Reflective liquid crystal display device

Claim 2

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged between said second substrate and said fluorescent film; wherein said second electrode comprises at least a portion of said reflecting means, and a surface of said second electrode reflects light transmitted through said liquid crystal layer; and wherein said liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 3

A device according to claim 1, wherein said fluorescent film contains a phosphorescent material.

Claim 4

A device according to claim 1, wherein said fluorescent film and said reflecting means comprise at least one of a laminated film comprised of a resin film including a fluorescent material and a reflective film, and a laminated film comprised of a resin film including a fluorescent material and a phosphorescent material and a reflective film.

Claim 5

A device according to claim 1, wherein said second substrate comprises a flexible film.

Claim 6

A device according to claim 1, wherein said liquid crystal layer comprises a composite film comprised of a liquid crystal and a polymer resin.

Claim 7

A device according to claim 1, wherein said liquid crystal layer comprises a polymer dispersed liquid crystal layer formed by dispersing aggregates of a liquid crystal in a polymer resin, and said polymer resin allows substantially uniform alignment of molecules of the liquid crystal while no electric field is applied.

Claim 8

A liquid crystal display device comprising: first and second transparent substrates having opposing inner surfaces arranged to oppose each other; a liquid crystal layer, arranged between said first and second transparent substrates, for controlling scattering and transmission of light; a first electrode arranged on the inner surface of said first transparent substrate; a second electrode arranged on the inner surface of said second transparent substrate; a fluorescent film for emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer, said fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material; reflecting means for reflecting the fluorescent light, said reflecting means arranged on said second substrate; and a light-shielding film, arranged in a non-display region on an outer surface of said first substrate, for shielding light, the non-display region including a portion other than a portion where said first and second electrodes oppose each other; wherein said second electrode comprises at least a portion of said reflecting means, and a surface of said second electrode reflects light transmitted through said liquid crystal layer; and wherein said liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 9

A liquid crystal display device comprising: first and second transparent substrates having opposing inner surfaces arranged to oppose each other; a liquid crystal layer, arranged between said first and second transparent substrates, for controlling scattering and transmission of light; a first electrode arranged on the inner surface of said first transparent substrate; a second electrode arranged on the inner surface of said second transparent substrate; a fluorescent film for emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer, said fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material; reflecting means for reflecting the fluorescent light, said reflecting means arranged on said second substrate; and a light-shielding film, arranged in a non-display region on an outer surface of said first substrate, for shielding light, the non-display region including a portion other than a portion where said first and second electrodes oppose each other; wherein said second electrode comprises at least a portion of said reflecting means, and a surface of said second electrode reflects light transmitted through said liquid crystal layer; and wherein said liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 10

A device according to claim 7, wherein said light-shielding film comprises a light-scattering or light-absorbing film.

Claim 11

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the inner surface of said first substrate; a second electrode arranged on the side of the inner surface of said second substrate and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged on said second electrode.

Claim 12

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the inner surface of said first substrate; a second electrode arranged on the side of the inner surface of said second substrate and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged on said second electrode.

Claim 13

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material and a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged between said second substrate and said fluorescent film.

Claim 14

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material and a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged between said second substrate and said fluorescent film.

Claim 15

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light, a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said first and second substrates, and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; reflecting means for reflecting the fluorescent light, said reflecting means arranged between said second substrate and said fluorescent film; and wherein the liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 16

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light, a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said first and second substrates, and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; reflecting means for reflecting the fluorescent light, said reflecting means arranged between said second substrate and said fluorescent film; and wherein the liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 17

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged between said second substrate and said fluorescent film; wherein said second electrode is formed on said reflecting means through an insulating layer; and wherein said liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 18

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged between said second substrate and said fluorescent film; wherein said second electrode is formed on said reflecting means through an insulating layer; and wherein said liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 19

A device according to claim 12, wherein said reflecting means is formed on said second substrate, and said second electrode is formed on said reflecting means through said fluorescent film as said insulating layer.

Claim 20

A device according to claim 12, wherein said fluorescent film and said reflecting means comprise a laminated film which is comprised of a resin film including a fluorescent material and a reflective film.

Claim 21

A device according to claim 12, wherein said liquid crystal layer comprises a composite film which is comprised of a liquid crystal and a polymer resin.

Claim 22

A device according to claim 12, wherein said fluorescent film includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 23

A device according to claim 12, further comprising a light-shielding film, arranged in a non-display region on an outer surface of said first substrate, for shielding light, the non-display region including a portion other than a portion where said first and second electrodes oppose each other.

Claim 24

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates for controlling scattering and transmission of light; a plurality of first electrodes arranged on the side of the inner surface of said first substrate in a matrix form; a plurality of active elements arranged on the side of the inner surface of said first substrate and connected to said first electrodes; at least one second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged between said first and second substrates; and wherein said liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 25

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates for controlling scattering and transmission of light; a plurality of first electrodes arranged on the side of the inner surface of said first substrate in a matrix form; a plurality of active elements arranged on the side of the inner surface of said first substrate and connected to said first electrodes; at least one second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and reflecting means for reflecting the fluorescent light, said reflecting means arranged between said first and second substrates; and wherein said liquid crystal layer includes a material which transmits light with a wavelength band corresponding to a wavelength of a fluorescent light emitted from said fluorescent material, and absorbs light with other wavelength bands.

Claim 26

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and a reflecting member for reflecting the fluorescent light, said reflecting member being arranged between said second substrate and said fluorescent film; and wherein said second electrode is formed on said second substrate, and said reflecting member is formed on said second electrode.

Claim 27

A liquid crystal display device comprising: first and second substrates having opposing inner surfaces and arranged at a predetermined distance from each other; a liquid crystal layer, arranged between said first and second substrates, for controlling scattering and transmission of light; a first electrode arranged on the side of the inner surface of said first substrate; a second electrode arranged between the inner surface of said second substrate and said liquid crystal layer and having at least a portion opposing said first electrode; a fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material, the fluorescent film emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer; and a reflecting member for reflecting the fluorescent light, said reflecting member being arranged between said second substrate and said fluorescent film; and wherein said second electrode is formed on said second substrate, and said reflecting member is formed on said second electrode.

Claim 28

A liquid crystal display device comprising: first and second transparent substrates having opposing inner surfaces arranged to oppose each other; a liquid crystal layer, arranged between said first and second transparent substrates, for controlling scattering and transmission of light; a first electrode arranged on the inner surface of said first transparent substrate; a second electrode arranged on the inner surface of said second transparent substrate; a fluorescent film for emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer, said fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material; a reflecting member for reflecting the fluorescent light, said reflecting member being arranged on said second substrate; and a light-shielding film, arranged in a non-display region on an outer surface of said first substrate, for shielding light, the non-display region including a portion other than a portion where said first and second electrodes oppose each other; and wherein said second electrode is formed on said second substrate, and said reflecting member is formed on said second electrode.

Claim 29

A liquid crystal display device comprising: first and second transparent substrates having opposing inner surfaces arranged to oppose each other; a liquid crystal layer, arranged between said first and second transparent substrates, for controlling scattering and transmission of light; a first electrode arranged on the inner surface of said first transparent substrate; a second electrode arranged on the inner surface of said second transparent substrate; a fluorescent film for emitting a fluorescent light with a specific wavelength range by energy of absorbed light passing through said liquid crystal layer, said fluorescent film arranged between said second substrate and said liquid crystal layer and comprised of a film including a fluorescent material; a reflecting member for reflecting the fluorescent light, said reflecting member being arranged on said second substrate; and a light-shielding film, arranged in a non-display region on an outer surface of said first substrate, for shielding light, the non-display region including a portion other than a portion where said first and second electrodes oppose each other; and wherein said second electrode is formed on said second substrate, and said reflecting member is formed on said second electrode.