Display panel and display device using a display panel

A display panel which comprises:

• a first electrode substrate formed with at least one first electrode thereon;
• a second electrode substrate formed with at least one second electrode thereon;
• a light modulating layer sandwiched between the first and second substrates, said light modulating layer being a layer of polymer dispersed liquid crystal material containing a light-curable resin component and a nematic liquid crystal component and wherein the average particle size of liquid crystal droplets of the polymer dispersed liquid crystal material or the average pore size of a polymer network thereof is within the range of 0.5 to 3 .mu.m;
• and
• a multi-layered dielectric film formed in a predetermined pattern on at least one of the first and second electrode substrates and operable to transmit therethrough light of a predetermined wavelength region and reflect therefrom light of a wavelength region other than said predetermined wavelength region, said multi-layered dielectric film being a laminated structure in which low refractive dielectric thin-films and high refractive dielectric thin-films are alternately deposited one above the other.

A display panel which comprises:

• a first substrate;
• a second substrate;
• a light modulating layer sandwiched between the first and second substrates and containing a light-curable resin;
• and
• a pattern made of a multi-layered dielectric film formed on at least one of the first and second substrates, said pattern being formed at a general periphery of an image display area and being in the form of a laminated structure of at least one low refractive dielectric thin-film, having an index of refraction not greater than 1.7, and a high refractive dielectric thin-film having an index of refraction not smaller than 1.8.

A display panel which comprises:

• a first substrate formed with a plurality of generally stripe-shaped first electrodes;
• a second substrate formed with a plurality of generally stripe-shaped second electrodes;
• a light modulating layer sandwiched between the first and second substrates and containing a light-curable resin;
• and
• a multi-layered dielectric film formed in a predetermined pattern on at least one of the first and second substrates and adjacent the light modulating layer and operable to transmit therethrough light of a predetermined wavelength region and reflect therefrom light of a wavelength region other than said predetermined wavelength region, said multi-layered dielectric film being a laminated structure in which low refractive dielectric thin-films and high refractive dielectric thin-films are alternately deposited one above the other.

A display panel which comprises:

• a first substrate formed with pixel electrodes in a matrix pattern;
• a second substrate formed with at least one second electrode;
• a layer of polymer dispersed liquid crystal material sandwiched between the first and second substrates and containing a light-curable resin component and a nematic liquid crystal component, said light-curable resin component being a light-curable acrylic resin having a fluorine group;
• and
• an insulating film formed on at least one of the second electrode and one of the pixel electrodes that is held in contact with the layer of the polymer dispersed liquid crystal material, said insulating film being made of material having a specific resistance higher than that of the polymer dispersed liquid crystal material.

A display panel which comprises:

• a first substrate formed with pixel electrodes in a matrix pattern;
• a second substrate formed with at least one transparent electrode;
• a layer of polymer dispersed liquid crystal material sandwiched between the first and second substrates;
• and
• a dielectric film or column located at least either between the neighboring pixel electrodes or on a counterelectrode facing between the pixel electrodes, made of material having a relative dielectric constant smaller than that of the polymer dispersed liquid crystal material and containing a substance capable of absorbing light scattered from the polymer dispersed liquid crystal layer.

A display panel which comprises:

• a first substrate formed with pixel electrodes in a matrix pattern;
• a second substrate formed with at least one transparent electrode;
• a liquid crystal layer of polymer dispersed liquid crystal material sandwiched between the first and second substrates;
• and
• a color filter formed over the pixel electrode and between the neighboring pixel electrodes;
• and
• a color filter having at least two colors and laminated between the neighboring pixel electrodes.

A display device which comprises:

• a display panel including a first electrode substrate formed with at least one first electrode thereon, a second electrode substrate formed with at least one second electrode thereon, a light modulating layer sandwiched between the first and second substrates, and a multi-layered dielectric film formed in a predetermined pattern on at least one of the first and second electrode substrates and operable to transmit therethrough light of a particular wavelength region and reflect light of a wavelength region other than the particular wavelength region;
• a switching means;
• a signal generating means connected with at least one of the first and second electrodes of the display panel through the switching means;
• and
• a detecting means for providing a signal in response to which said switching means operates to switch over between an applied state, in which a signal from said signal generating means is applied to said electrodes, and a non-applied state in which said signal from said signal generating means is not applied to said electrodes.

A display device which comprises:

• a display panel including a first electrode substrate formed with at least one first electrode thereon, a second electrode substrate formed with at least one second electrode thereon, a light modulating layer sandwiched between the first and second substrates and containing a light-curable resin component, and a multi-layered dielectric film formed on at least one of the first and second electrode substrates at locations corresponding to the electrodes, said multi-layered dielectric film being a laminated structure in which low refractive dielectric thin-films each having an index of refraction not greater than 1.7, and high refractive dielectric thin-films each having an index of refraction not smaller than 1.8 are alternately disposed one above the other;
• a light generating means;
• a condensing means for converting light emitted from the light generating means into substantially parallel light;
• and
• an image enlarging means for enlarging an optical image on the liquid crystal panel to facilitate viewers to look at easily, said display panel being operable to form an optical image by converting rays of light emerging from the condensing means.

A display device which comprises:

• a light generating means for generating visible rays of light by causing ultraviolet rays to act on a fluorescent element;
• a condensing means for converting light emitted from the light generating means into substantially parallel light;
• a liquid crystal panel for forming an optical image by converting rays of light emerging from the condensing means;
• and
• an image enlarging means for enlarging an optical image on the liquid crystal panel to facilitate viewers looking at the image easily;
• wherein said light generating means is arranged on a first member, said condensing means is arranged on a second member, and one of said first and second members is movable with respect to the other of said first and second members, whereby the distance between said light generating means and said condensing means is adjustable by movement of the one of said first and second members relative to the other of said first and second members.

A projection-type display device which comprises:

• a display panel including a first substrate formed with at least one first electrode thereon, a second substrate formed with at least one second electrode thereon, a light modulating layer sandwiched between the first and second substrates, and a multi-layered dielectric film formed in a predetermined pattern on at least one of the first and second substrates and operable to transmit therethrough light of a particular wavelength region and reflect light of a wavelength region other than the particular wavelength region;
• a light generating means;
• and
• a projecting means for projecting light which has been modulated by the display panel.

A display panel which comprises:

• a first substrate formed with pixel electrodes in a matrix pattern;
• a second substrate formed with at least one counter electrode thereon;
• a layer of polymer dispersed liquid crystal material sandwiched between the first and second substrates and containing a light-curable resin component and a nematic liquid crystal component, said light curable resin being a light-curable acrylic resin having a fluorine group and said liquid crystal component being a nematic liquid crystal of a chloric system;
• a light generating means;
• and
• a projecting means for projecting light which has been modulated by the display panel.

A display device which comprises:

• a display panel including a first substrate formed with pixel electrodes in a matrix pattern, a second substrate formed with counter electrodes, a layer of polymer dispersed liquid crystal material sandwiched between the first and second substrates and containing a light-curable resin component, which is a light-curable acrylic resin having a fluorine group, and a nematic liquid crystal component, and an insulating film formed on at least one of the counter electrodes and the pixel electrodes and adjacent the layer of the polymer dispersed liquid crystal material and made of material having a specific resistance higher than that of the polymer dispersed liquid crystal material;
• a light generating means;
• and
• a projecting means for projecting light modulated by the display panel.

A projection-type display device which comprises:

• a display panel including a first substrate formed with pixel electrodes in a matrix pattern, a second substrate formed with counter electrodes, a layer of polymer dispersed liquid crystal material sandwiched between the first and second substrates, and a dielectric film or column located on at least either between the neighboring pixel electrodes or on one of the counter electrodes facing the neighboring pixel electrodes and made of material having a relative dielectric constant not greater than that of the polymer dispersed liquid crystal material, said dielectric film or column containing a substance capable of absorbing light scattered from the polymer dispersed liquid crystal layer;
• a light generating means;
• and
• a projecting means for projecting light modulated by the display panel.

A projection-type display device which comprises:

• a display panel including a first substrate formed with pixel electrodes in a matrix pattern, a second substrate formed with counter electrodes, a layer of polymer dispersed liquid crystal material sandwiched between the first and second substrates and containing a light-curable acrylic resin component and a nematic liquid crystal component, and a color filter formed on at least one of the counter electrodes and a portion between each neighboring pixel electrodes, a color filter of at least two colors being laminated between each neighboring pixel electrodes;
• a light generating means;
• and
• a projecting means for projecting light modulated by the display panel.

A projection-type display device which comprises:

• a light generating means;
• a light separating means for separating light, emitted from the light generating means, into a plurality of optical paths of different wavelength regions or a light separating means for separating light, emitted from the light generating means, into a plurality of optical paths of different wavelength regions and a light combining means for combining said plurality of the optical paths into a single optical path;
• a light modulating means for modulating light traveling along each of the optical paths divided by said light separating means;
• an optical coupling layer optically coupling the light modulating means with at least one of the light separating means and the light combining means;
• a light projecting means for projecting the light which has been modulated by the light modulating means;
• and
• a light absorbing means formed or arranged in one of the light separating means and the light combining means which is coupled with the light modulating means and at an area where no light effective for an image display travel.

A projection-type display device which comprises:

• a light modulating means for modulating light as a function of change in light modulating state;
• a light generating means;
• a light changing means for doing at least one of a) separating light, emitted from said light generating means, into a plurality of optical paths and b) combining the optical paths together into a single optical path, said light changing means having a light separating surface constituted by a laminated structure in which low refractive dielectric thin-films and high refractive dielectric thin-films are alternately disposed one above the other;
• a housing means for accommodating both of said light modulating means and said light changing means;
• a quantity of liquid or gel filled in a space defined in said housing means and also in a space between said light modulating means and said light changing means;
• and
• a projecting means for projecting the light modulated by said light modulating means.

A projection-type display device which comprises:

• a light generating means;
• a light separating means for separating light, emitted from the light generating means, into first and second optical paths;
• a first modulating means for modulating light disposed on the first optical path;
• a second modulating means for modulating light disposed on the second optical path;
• and
• a light combining means for combining light on the first optical path and light on the second optical path together;
• a light coupling layer optically coupling said light combining means with said first modulating means and also with said second modulating means;
• a projecting means for projecting the optical image formed in said first and second modulating means;
• and
• a light absorbing means located at a region of said light combining means where light which does not participate in the display of the image passes.

A projection-type display device which comprises;

• a light generating means;
• a polarized light separating means for separating light emitted by the light generating means into a P-polarized light path and an S-polarized light path;
• a polarized light combining means for combining the P-polarized and S-polarized light paths, separated by the polarized light separating means, into a single optical path;
• a first light modulating means disposed on the P-polarized light path and optically coupled with the polarized light separating means or the polarized light combining means through a light coupling layer;
• a second light modulating means disposed on the S-polarized light path and optically coupled with the polarized light separating means or the polarized light combining means through a light coupling layer;
• a projection means for projecting optical image formed by the first and second modulating means;
• said modulating means being operable to form an optical image as a function in light scattering state;
• and
• a light absorbing means formed or disposed within the polarized light separating means or the polarized light combining means, which is optically coupled with the light modulating means, at an area where no light is effective for image display travel.

A projection-type display device which comprises:

• a light generating means;
• a light separating means for separating light, emitted from the light generating means, into first and second optical paths;
• first and second light modulating means disposed on the first and second optical paths, respectively, said light modulating means being a liquid crystal display panel operable to form the optical image as a function of change in light scattering state;
• and
• a projecting means for projecting first and second optical images, formed by the respective first and second modulating means, onto the same position, wherein a video signal to be written in an arbitrarily chosen first pixel of the first optical image projected by said projecting means has a phase opposite to a video signal to be written in an arbitrarily chosen second pixel of the second optical image projected by said projecting means.

A projection display device which comprises:

• a light generating means;
• a light separating means for separating light, emitted from said light generating means, into a plurality of light components of different wavelengths;
• a light modulating means for modulating light and including pixel electrodes, arranged in a matrix pattern, for forming an optical image as a function of change in light scattering state;
• a microlens array including a plurality of micro-lenses arranged in a matrix pattern, and disposed on an incident side of the light modulating means;
• and
• a projecting means for projecting the light modulated by the light modulating means, wherein the light on said optical paths enter the light modulating means after having been refracted by the micro-lenses and wherein each one of said micro-lenses correspond to the plural pixel electrodes.

A projection-type liquid crystal display device which comprises:

• a light generating means;
• a light modulating means for modulating light emitted from the light generating means;
• a projecting means for projecting light modulated by the light modulating means;
• said light modulating means being a display panel containing polymer dispersed liquid crystal material and comprising a first substrate including pixel electrodes arranged in a matrix pattern and switching elements for applying a signal to the pixel electrodes, and a second substrate formed with a counter electrode;
• and
• a light shielding film made of resin and overlaying the switching elements.