63results about How to "Extended range of color reproduction" patented technology

In a display device having a color filter, a color material dispersed layer having the function of absorbing light of specific wavelengths in the visible light beam region is provided on the optical path so that the light absorption peak of this color material dispersed layer in the visible light beam region is located in the range of ±30 nm from the overlap point in the spectral transmission properties of each color of the color filter. Further, the color material dispersed layer is provided on a filter as a constituent part of the back light of the display. This filter has, as its substrate, a thermoplastic resin having a thickness of 30-350 micrometers and has a transmission in the maximum absorption wavelength in the color material dispersed layer of not more than 75%. The back light has, as its light source, a fluorescent lamp comprising a three band tube, and its emission color is subjected to color correction by an auxiliary filter having an organic color material dispersed layer provided on the illuminating light path.

A color image display device is provided to reproduce colors determined by an input video signal in a color space of the display device while keeping a wide color reproducing region of the display device with natural hues. On the assumption that a color space is hypothetically considered so that an input signal is originally in hue in a first color range while an increasing saturation is reproduced with hues changed gradually to a widening direction of color reproduction in a second color range or more, the color converting portion 12 converts a video signal, so that an input video signal 10 is reproduced on a color image displaying portion 13 with a tristimulus value represented in this hypothetical color space, and the color image displaying portion 13 displays, and reproduces, a vivid video image without a feeling of wrongness by making use of a wide color reproduction range of the color image display device.

Disclosed is a color liquid display (LCD) employing a transmissive color liquid display panel. The display includes a complementary color light emitting diode, which is one of a cyan light emitting diode (21C), emitting cyan light, a yellow light emitting diode, emitting yellow light, and a magenta light emitting diode, emitting magenta light, in addition to light emitting diodes emitting three prime colors, as a light source. The display also includes a complementary color filter, having at least one of a cyan filter CFC having a transmission wavelength range corresponding to the cyan light, a yellow filter CFY having a transmission wavelength range corresponding to the yellow light and a magenta filter CFM having a transmission wavelength range corresponding to the magenta light, in addition to a tristimulus color filer, as a color filter (19).

Provided is a light-emitting element, and a direct-view type display, capable of expanding a color-reproduction range. A plain-surface light source (1) is capable of emitting light in an area corresponding to pixels by a variable light-emitting amount. A liquid crystal cell (2b) is formed in such a manner as to correspond to each pixel on the plain-surface light source (1). On the liquid crystal cell (2b), a birefringent plate (3) is provided. On the birefringent plate (3), a quantum dot layer (4) is formed. The quantum dot layer (4) is coated in such a manner as to have a first quantum dot layer (4a) (grain size A), and a second quantum dot layer (4b) (grain size B: A<B). During a 1-field period, it is possible to form a state that ultraviolet rays are guided only to the first quantum dot layer (4a) a state that the ultraviolet rays are guided to the both dot films (4a), (4b) at an arbitrary ratio, and a state that the ultraviolet rays are guided only to the second quantum dot layer (4b). This, in a case of light in red color, allows each of pixels for respective colors to create light in red color in which different red colors are mixed, for example.

A liquid-crystal display apparatus includes a liquid-crystal panel (25) having a color filter (26), a W light-emitting diode (22w) for irradiating white light to the liquid-crystal panel (25), RGB light-emitting diodes (22r, 22g, 22b) for irradiating lights of more than two colors containing white to the liquid-crystal panel (25), a luminance sensor (44) for detecting ambient illuminance of the liquid-crystal panel (25) to output a detected signal and a control unit (41) for switching the W light-emitting diode (22w) and the RGB light-emitting diodes (22r, 22g, 22b) based on the detected signal from the luminance sensor (44). In a related-art liquid-crystal display apparatus, since lights of red (R), green (G) and blue (B) are emitted with a time lag and superimposed upon each other so that a clear color may not be obtained in each pixel, thus resulting in insufficient color reproducing capability. According to the present invention, these defects encountered with the related art can be obviated.

A display device which exhibits functional effects in which color separation between sub-pixels constituting a pixel is hardly recognized and white line display is easily recognized as one line, in enlargement of the color reproduction range in image display using multi-primary colors, and thereby improves display quality, and provides a liquid crystal display device including such a display device. The display device displays an image constituted by pixels each including sub-pixels of four or more colors, wherein the pixels constituting the display device mainly include a pixel arranging a sub-pixel of a color having the highest brightness value in a central region of the pixel.

A color liquid crystal display device capable of displaying a large color gamut is provided. A color liquid crystal display device 100 includes: a transmissive color liquid crystal panel 10 having a color filter and a backlight light source 20, in which the backlight light source 20 includes a fluorescent lamp 21 of large color reproduction range, a color filter 19 is made of color filters of three primary colors that select the wavelength to transmit red light, green light and blue light, and the filter of each color has a spectroscopic characteristic suitable for the spectrum of the fluorescent lamp 21 of large color reproduction range.

A planar light-source apparatus illuminates, from the backside, a transmissive liquid crystal display having a display area composed of pixels formed in a two-dimensional matrix arrangement, and the planar light-source apparatus includes a diffusing plate facing the liquid crystal display, a plurality of planar light-source units, each unit having a light source, and a support wall arranged between the planar light-source units for supporting the diffusing plate, and the top face of the support wall lies adjacent to the diffusing plate.

An electro-optical device includes: a liquid crystal panel that includes display pixels each having a plurality of sub-pixels; and an illuminating device that illuminates the liquid crystal panel. In the electro-optical device, the plurality of sub-pixels include at least two cyan and white sub-pixels.

A color display unit is provided, which allows color display to be performed with high efficiency in utilizing light as compared with a prior type using all of RGB color filters. The color display unit includes a light source section having plural kinds of color LEDs, and includes a display section controlling transmissivity of light from the light source section in synchronization with light emission control by the light source section, to achieve desired color display. The display section has a full-color transmittable region and a partially transmittable region. The full-color transmittable region allows all color components of the light to be transmitted, while the partially transmittable region inhibits passage of one or more in the color components of the light. The display section controls the transmissivity of the light independently for each of the full-color transmittable region and the partial transmittable region.

A CPU of a color printer performs gamma correction and a matrix operation M on an RGB color space image data derived by a matrix operation S. Using gamma correction value settings, the CPU performs gamma conversion of image data. Matrix operation M converts the RGB color space to an XYZ color space. When performing matrix operation M, the CPU refers to a PrintMatching tag and performs the matrix operation using a matrix (M) that corresponds to the indicated color space, in order to reflect the color space used for generation of image data.

A backlight device (100) is provided with first light sources (20a, 20b) and second light sources (10). The first light sources (20a, 20b) emit first light beams (22a, 22b) that are red laser beams. The second light sources (10) emit a second light beam (13) that is blue-green color light having a complementary-color relationship with the laser beam. The second light sources (10) comprise light-emitting diodes that emit blue light, and phosphors that absorb the blue light and emit green light.

The present invention provides a toner containing at least a binder resin and a pigment, wherein the amount of the pigment in the toner is 3.0% by mass to 8.5% by mass, the volume average particle diameter of the toner is 2.0 μm to 6.0 μm, and a monochrome image, which has been fixed on a recording medium so that the amount of the toner adhered onto the recording medium is 0.25 mg / cm2, has a reflection density of 1.2 to 2.5.

The water-based ink set for ink-jet recording includes a magenta ink and a red ink with dynamic surface tensions thereof satisfying the following inequalities (IM), (IIM), (IIIM) and (IVM) σ30M≦about 49 mN / m   (IM) σ30M+σ30R≦about 100 mN / m   (IIM) wherein σ30M is the dynamic surface tension of the magenta ink at a lifetime of 30 ms and σ30R is the dynamic surface tension of the red ink at a lifetime of 30 ms, σ1000R≧about 36 mN / m   (IIIM) σ1000M+σ10000R≧about 70 mN / m   (IVM) wherein σ1000 M is the dynamic surface tension of the magenta ink at a lifetime of 1,000 ms and σ1000R is the dynamic surface tension of the red ink at a lifetime of 1,000 ms).

A display device which exhibits functional effects in which color separation between sub-pixels constituting a pixel is hardly recognized and white line display is easily recognized as one line, in enlargement of the color reproduction range in image display using multi-primary colors, and thereby improves display quality, and provides a liquid crystal display device including such a display device. The display device displays an image constituted by pixels each including sub-pixels of four or more colors, wherein the pixels constituting the display device mainly include a pixel arranging a sub-pixel of a color having the highest brightness value in a central region of the pixel.

A method of creating a lookup table which describes a correspondence relationship between an input value to a printing apparatus for performing printing by ejecting ink onto a printing medium, and output values of a special gloss ink and a color ink of the printing apparatus, includes: a first process of determining the output value of the special gloss ink to be relatively low at a lattice point where an index value relating to color intensity is dark to be equal to or lower than a predetermined value, with regard to each lattice point of the lookup table; and a second process of determining the output value of the color ink at each lattice point by increasing an ink duty limit value which is the upper limit of the sum of the color ink that can be ejected onto a unit area of the printing medium, according to the determined output value of the special gloss ink.

It is made possible to provide a light-emitting material having a short decay time of 10 μs or less and an emission wavelength of 650 nm or longer. A light-emitting material includes a material having a composition represented by ARS2:Eu, wherein A represents at least one element selected from Na, K, Rb, and Cs, and R represents at least one element selected from Y, La, Gd, and Lu.

The water-based ink set for ink-jet recording includes a cyan ink and a blue ink, or a cyan ink and a green ink. The cyan ink is a light cyan ink having a lightness (L*) of about 60 or more in the L*a*b* colorimetric system. A normal cyan ink having a lightness (L*) of about 60 or less in the L*a*b* calorimetric system is not included in the ink set.

An ink set includes a cyan ink composition containing C. I. Pigment Blue 15:6 as a pigment; a magenta ink composition containing a quinacridone pigment selected from the group consisting of C. I. Pigment Violet 19, C. I. Pigment Red 122, C. I. Pigment Red 202, and C. I. Pigment Red 209 or a quinacridone solid solution pigment composed of at least two selected from the group; a yellow ink composition containing a pigment selected from the group consisting of C. I. Pigment Yellow 74, C. I. Pigment Yellow 213, and C. I. Pigment Yellow 185; a light magenta ink composition containing a quinacridone pigment selected from the group consisting of C. I. Pigment Violet 19, C. I. Pigment Red 122, C. I. Pigment Red 202, and C. I. Pigment Red 209 or a quinacridone solid solution pigment composed of at least two selected from the group at a pigment concentration lower than that of the magenta ink composition; and a light cyan ink composition containing C. I. Pigment Blue 15:3 as a pigment at a pigment concentration lower than that of the cyan ink composition.

A projection-type display apparatus includes at least one light source for emitting three primary color lights, a display panel, a control circuit for controlling the display panel, an illumination light optical system for illuminating the display panel with the light emitted from the light source, and a projection lens for projecting the light modulated by the display panel. The illumination light quantity is modulated by a control signal generated according to a video signal in at least one of the illumination color lights among the three primary color lights and the upper limit of the dynamic range of the display panel is used without depending on the video signal.

An electro-optical device includes a plurality of sub-pixels each of which has a light transmitting region and a light reflecting region, colored layers being disposed so as to correspond to the plurality of sub-pixels, the colored layers having filter colors of a three primary color system and a filter color of a complementary color system other than the three-primary-color system, transmissive display being performed in the light transmitting region, reflective display being performed in the light reflecting region, and color display being performed in both reflective display and transmissive display. Further, in each of the plurality of sub-pixels, a colored layer of any one of the filter colors of the three primary color system and the filter color of the complementary color system other than the three primary color system is disposed in at least the light transmitting region, and the colored layer is not provided in the light reflective region of the sub-pixel in which the colored layer of the filter color of the complementary color system is disposed.

A reflective liquid crystal display device having improved contrast is provided. A reflective liquid crystal display device having improved color reproducibility is provided. A reflective liquid crystal display device having low power consumption is provided. A cell gap is adjusted for each color by devising the positions of a conductive layer and an insulating layer under a reflective electrode. A capacitor is placed under the reflective electrode, and one of the electrodes is a common electrode while the other thereof is a conductive layer or a metal oxide layer. By leaving or removing an insulating layer over the other electrode, the cell gap can be adjusted.

A water-based ink set for ink-jet recording is provided which is capable of: reducing graininess in a low-density printed part in a cyan direction without reducing the color reproduction range in the cyan direction in a high-density printed part; extending the color reproduction range in a blue direction and / or a green direction; and improving gas resistance and the vividness in the blue direction and / or the green direction. The water-based ink set for ink-jet recording includes a cyan dye ink employing dye as a coloring agent and a blue pigment ink employing pigment as a coloring agent and / or a green pigment ink employing pigment as a coloring agent. The cyan dye ink is a light cyan dye ink having a lightness (L*) of about 60 or more in the L*a*b* colorimetric system.

The present invention provides a transflective display device capable of extending a color reproduction range and reducing a difference in white balance between transmissive display and reflective display. The display device of the present invention is a transflective display device including four or more filters having different colors in a pixel, each of the four or more filters having different colors including: a transmissive region for displaying an image by transmitting light from a backlight; and a reflective region for displaying an image by reflecting surrounding light, wherein at least two of the four or more filters having different colors are different in a proportion of an area of the reflective region, and the proportion of the area is represented by the following formula (1):Proportion of area of reflective region=Area of reflective region / Effective area of filter  (1).

A color liquid crystal display device capable of displaying a large color gamut is provided.A color liquid crystal display device 100 includes: a transmissive color liquid crystal panel 10 having a color filter and a backlight light source 20, in which the backlight light source 20 includes a fluorescent lamp 21 of large color reproduction range, a color filter 19 is made of color filters of three primary colors that select the wavelength to transmit red light, green light and blue light, and the filter of each color has a spectroscopic characteristic suitable for the spectrum of the fluorescent lamp 21 of large color reproduction range.

A color image display device is provided to reproduce colors determined by an input video signal in a color space of the display device while keeping a wide color reproducing region of the display device with natural hues. On the assumption that a color space is hypothetically considered so that an input signal is originally in hue in a first color range while an increasing saturation is reproduced with hues changed gradually to a widening direction of color reproduction in a second color range or more, the color converting portion 12 converts a video signal, so that an input video signal 10 is reproduced on a color image displaying portion 13 with a tristimulus value represented in this hypothetical color space, and the color image displaying portion 13 displays, and reproduces, a vivid video image without a feeling of wrongness by making use of a wide color reproduction range of the color image display device.

There is a problem that in the connection portion between a rare-earth-doped double clad fiber and a single mode fiber, pumping light leaks in a portion having the coating, and the fiber generates heat partially with this energy and deteriorates. Also, there is another problem that the output is limited as the oscillation wavelength becomes shorter. Accordingly, in a laser light source device formed by combining a fiber laser and a fiber amplifier, by using the residual pumping light in the fiber laser as the pumping light in the fiber amplifier, it is possible to enhance the reliability by preventing the fiber deterioration caused by the residual pumping light. Further, by amplifying the output in the fiber amplifier in the latter stage without any limitation on the pumping light output, it is possible to increase an output of the oscillation light.

A liquid crystal display capable of improving a color reproduction range is disclosed. The liquid crystal display includes a liquid crystal panel having a plurality of gate lines and a plurality of data lines which cross each other to define a plurality of unit pixel regions; a first pixel region having a first dot pitch among individual pixel regions in at least one of the unit pixel regions; and a second pixel region having a second dot pitch among the individual pixel regions in the unit pixel regions, wherein the first and second dot pitches of the first and second pixel regions are different from each other. By this configuration, the pixel electrodes are formed to have the same opening ratio in the individual pixel regions forming a unit pixel by changing the shape and size of the pixel electrodes in a region having a sensor and a region without a sensor, thereby improving a color reproduction range and improving the display quality of the liquid crystal display.