1649results about How to "High color reproduction" patented technology

A display unit capable of being simply designed and manufactured by using more simplified light emitting device structure while capable of high definition display and display with superior color reproducibility and a manufacturing method thereof are provided. The display unit is a display unit (1), wherein a plurality of organic EL devices (3B), (3G), and (3R), in which a function layer (6) including a light emitting layer (11) is sandwiched between a lower electrode (4) made of a light reflective material and a semi-transmissive upper electrode (7), and which has a resonator structure in which light h emitted in the light emitting layer (11) is resonated using a space between the lower electrode (4) and the upper electrode (7) as a resonant section (15) and is extracted from the upper electrode (7) side are arranged on a substrate (2). In the respective organic EL devices (3B), (3G), and (3R), the function layer (6) is made of an identical layer, and an optical distance L of the resonant section (15) is set to a value different from each other so that blue, green, or red wavelength region is resonated.

The invention realizes a phosphor film that has a fluorescent characteristic excellent in resistance to humidity and provides, using the phosphor film, a liquid crystal display device that is excellent in resistance to humidity and has satisfactory calorimetric property and color mixture property. Phosphor particles that are excited by incident light and emit light having a wavelength different from the incident light are mixed in a binder. The binder mixed with the phosphor particles is sandwiched between a translucent film and a non-permeable layer as a phosphor layer to form a phosphor film. This phosphor film is provided at least in one place among a place between a light source and a light guide of a lighting device, a place on a light irradiation surface of the light guide, and a place between the light guide and a reflection plate. Moreover, the phosphor particles have a characteristic that a wavelength absorbed by a color filter of a display element is set as an excitation wavelength and a luminescent wavelength is in a region transmitted by the color filter. With this phosphor film, it is possible to realize a display device that has extremely high luminance efficiency and color reproducibility.

A white light emitting device including: a blue LE chip having a dominant wavelength of 430 to 455 nm; a red phosphor disposed around the blue light emitting diode chip, the red phosphor excited by the blue light emitting diode chip to emit red light; and a green phosphor disposed around the blue light emitting diode chip, the green phosphor excited by the blue LED chip to emit green light, wherein the red light emitted from the red phosphor has a color coordinate falling within a space defined by four coordinate points (0.5448, 0.4544), (0.7079, 0.2920), (0.6427, 0.2905) and (0.4794, 0.4633) based on the CIE 1931 chromaticity diagram, the green light emitted from the green phosphor has a color coordinate falling within a space defined by four coordinate points (0.1270, 0.8037), (0.4117, 0.5861), (0.4197, 0.5316) and (0.2555, 0.5030) based on the CIE 1931 color chromaticity diagram, and the red phosphor includes a phosphor represented by (Sr, Ba, Ca)AlSiN3:Eu and the green phosphor includes a phosphor represented by (Sr, Ba, Ca)2SiO4:Eu.

A translucent laminate sheet includes at least one type of organic phosphor to make wavelength conversion of light emitted from a light source, and light-transmitting members to seal the organic phosphor. The light-transmitting members are formed by two plate-like members and the organic phosphor is disposed to be held between the two plate-like members. A frame member is disposed between the two plate-like members, and the organic phosphor is hermetically sealed in a space surrounded by the frame member and the two plate-like members.

An image sensor includes a sensor array including a two-dimensional array of pixel elements. The array of pixel elements includes a first group of photodetectors having a first sensitivity level and a second group of photodetectors having a second sensitivity level. The sensor array outputs digital signals as pixel data representing an image of a scene. In operation, the first group of photodetectors generates the output signals after a first exposure time and the second group of photodetectors generates the output signals after a second exposure time, where the first exposure time and the second exposure time are within a snapshot of the scene and the first exposure time is different than the second exposure time. When thus operated, the image sensor of the present invention provides improved color reproduction capability and improved signal to noise ratio, especially for the less sensitive photosensitive elements.

An imaging apparatus includes: a first pixel which receives both visible light and infrared light, and a second pixel which receives infrared light, both pixels being formed on an imaging device; an infrared light component estimation unit which estimates, based on spectral characteristics of light received by the first pixel and spectral characteristics of light received by the second pixel, a magnitude of an infrared light component contained in a signal outputted from the first pixel from a signal outputted from the second pixel; and a subtraction unit which subtracts the estimated infrared light component from the signal outputted from the first pixel.

The present invention provides an LED device 1 as a light source having an excellent color reproducibility and high luminance. The LED device 1 comprises: a base 2 having a recess 4 with the upper surface opened, the inner wall surface of the recess 4 constituting a reflection surface 4a; a LED chip 5 disposed on the inner bottom of the recess 4; a resin 10 filled in the recess 4, the resin 10 including phosphors 7a, 7b, 7c which absorb a part of light emitted from the LED chip to convert the wavelength thereof and emit light; and a phosphor layer 6a, 6b, 6c formed on the reflection surface 4a, the phosphor layer 6a, 6b, 6c including the phosphors 7a, 7b, 7c.

A device for projecting a color image upon a screen, including color image recording and color image reproduction with an enhanced color reproduction trueness in comparison to conventional processes. In the device two images are recorded in parallel, which separately detect the shorter and the longer wavelength parts of the individual principle color spectral regions. In image reproduction six primary valences are produced, which respectively comprise the image information of the shorter and the longer wavelength parts of each of the individual principle color spectral regions. In an alternative embodiment the device produces a full color, stereoscopic image reproduction, in which the three primary valences of the respective shorter wave part encode a stereoscopic half image and the three primary valences of the respective longer wavelength part encode the other stereoscopic half image.

An exposure value is determined based on a face region, with high accuracy and with less effect of a background region or density contrast caused by shadow. For this purpose, a face detection unit detects a face region from a face candidate region in a through image detected by a face candidate detection unit, by fitting to the face candidate region a mathematical model generated by a method of AAM using a plurality of sample images representing human faces. An exposure value determination unit then determines an exposure value for photography, based on the face region.

A photoelectric conversion device comprises an organic photoelectric conversion film intervening between at least two electrodes, the organic photoelectric conversion film comprising a positive hole transporting photoelectric conversion film and an electron transporting photoelectric conversion film, wherein each of the positive hole transporting photoelectric conversion film and the electron transporting photoelectric conversion film has absorption in a visible range, and a difference in wavelength between longer wavelength ends of absorption of the positive hole transporting photoelectric conversion film and the electron transporting photoelectric conversion film is 50 nm or less.

An LED device and an LED lighting apparatus using the same can include a casing including a cavity and at least one pair of LED chips including a first and second LED chips. The LED chips can be adjacently located in the cavity, and an encapsulating resin including a phosphor can be disposed in the cavity so as to encapsulate the LED chips. A light-emitting surface of the first LED chip can be covered with a transparent resin, and therefore color temperatures of light emitted from the first and second LED chips can be located on a substantially black body due to a difference between their distances to the encapsulating resin. Thus, the LED lighting apparatus using the LED device can selectively emit white light having a preferable color temperature that is close to a natural color between the color temperatures by adjusting current applied to the LED chips.

An illumination device for obtaining white light using two kinds of phosphors for converting blue light into green light and red light based on blue excitation is provided to realize high light emission efficiency and a long life. The illumination device has a structure in which a first color conversion element for converting light into red light based on blue excitation is disposed on an optical path between a second color conversion element for converting light into green light based on blue excitation and a blue light emitting element and separated from the second color conversion element. A resin for sealing a blue LED is mixed with a red phosphor to exit violet light (blue light and red light). A resin containing a green phosphor is disposed on an optical path of violet light. The white light is realized at high light emission efficiency by additive mixing of three colors.

A system is configured to calculate an evaluation index of sample ink amount data from a color difference evaluation index and an image quality evaluation index and create a profile on the basis of a sample with a high rating value. When the image quality evaluation index is predicted, the image quality evaluation index corresponding to any sample ink amount data is estimated based on a profile produced on the basis on actual evaluation. A printer driver is configured to create a plurality of profiles by using different indices in this system and to perform color conversion by using the plurality of profiles. The plurality of profiles are appropriately selected according to the user's needs, printing conditions, and type of printing object image.

A toner composition including toner particles including mother toner particles, which include a binder resin, a colorant and a release agent, and a charge controlling agent which is located on a surface of the mother toner particles and fixed thereon, wherein the toner particles have a spherical degree of from 0.960 to 1.000 and a specific surface area of from 0.70 to 2.5 m2 / g. The toner composition optionally includes an external additive which is present on the surface of the toner particles.

A backlight unit is provided which includes: a light guide plate which guides incident light from a lateral side of the light guide plate toward a liquid crystal display (LCD) panel placed in front of the light guide plate; a light source unit which includes a light source which emits the light and a light source supporting member which supports the light source and is arranged adjacent to the lateral side of the light guide plate; a supporting frame which is arranged in the backlight unit; a quantum dot (QD) bar which is arranged between the lateral side of the light guide plate and the light source and changes a color of the light emitted from the light source; and a QD-bar fastening unit which fastens the QD bar to at least one of the light source supporting member and the supporting frame.

An imaging apparatus for imaging an image using a solid-state image pickup device includes a first linear matrix operation unit configured to perform matrix conversion upon a color component of an image signal obtained by imaging using coefficients capable of improving color reproducibility; a second linear matrix operation unit configured to perform matrix conversion upon the color component using coefficients capable of achieving noise component reduction; a signal combining unit configured to combine image signals output from a plurality of signal processing systems each of which includes one of the first or second linear matrix operation units; and a combination ratio setting unit configured to set a combination ratio so that, when a subject is bright, an image signal output from the signal processing system that includes the first linear matrix operation unit can be combined in an amount larger than the image signals output from the other signal processing systems.

An imaging device free from discoloring under high temperature or high irradiation and having high color reproducibility is provided. Multilayer filters made of inorganic materials are provided above respective photoelectric conversion elements. The filters include red filters having predetermined spectra characteristics, green filters having predetermined spectral characteristics, and two kinds of blue filters having spectral characteristics different in peak wavelength.

Light color beams respectively from LEDs formed on an LED array substrate are allowed to enter one edge of second light guide plates for color mixing, which is arranged to either side of the LEDs. In each of the second light guide plates, color mixing of the respective color light beams occurs with increasing distance from this one edge, and thereby white light is obtained. This white light is guided out through the other edge of the second guide light plate, is reflected by a second reflection plate, and then is allowed to enter either of two opposite edges of a first light guide plate. The white light having entered the first light guide plate is radiated out from a front surface thereof.

A red light emitting layer 11, a green light emitting layer 12, a blue light emitting layer 13 are laminated in this order between an anode 3 and a cathode 5, and an intermediate layer “a” formed by use of an organic material is provided between the green light emitting layer 12 and the blue light emitting layer 13. The HOMO-LUMO energy gap in the intermediate layer “a” is greater than the HOMO-LUMO energy gap of a green light emitting material constituting the green light emitting layer 12. In addition, the intermediate layer “a” has a hole transporting property. In the case of configuring a display by use of the organic EL devices 1, color filters are provided on the light take-out surface side. This makes it possible to provide an organic EL device with which light emission components for three colors of red, green and blue with a good balance suited to use for a full-color display can be obtained at a high luminance.

An EL element and an interface between a channel and an impurity diffusion area of a thin film transistor provided in the vicinity of the EL element are spaced apart. A light shielding film is provided between the EL element and the interface. By providing such a space and / or the light shielding film, generation of a leak current, which would otherwise be caused by light emitted from the self-emissive EL element entering the TFT, is reliably prevented, thereby ensuring that emitted light is not brighter than a predetermined luminance.

A backlight unit and method of use are provided having a first light guide plate, a linear light source disposed along at least one side edge of the first light guide plate, a plurality of second light guide plates facing the first light guide plate, and a point light source disposed along at least one side edge of each second light guide plate. Accordingly, the present invention can provide a backlight unit using both a point light source and a linear light source at substantially the same time, and having superior color reproducibility and low power consumption.

An imaging device includes: a pixel array part in which a plurality of pixels with different characteristics of spectral sensitivity are arranged in an array and which converts light transmitted through the pixel into an electric signal, wherein in the pixel array part, among a first color filter pixel, a second color filter pixel, and a third color filter pixel, each including a color filter, at least a plurality of the first color filter pixels and the second color filter pixels is arranged in an oblique pixel array system, and a clear pixel having a high transmittance is arranged in an oblique pixel array system at a given position of a given row and a given column in the oblique pixel array with respect to the first color filter pixel, the second color filter pixel, and the third color filter pixel.

A printing control method comprises a rendering step for rendering a description language document, a color matching step for converting color information specified in the description language document into color information for a printing device which is to print the description language document, and a control step for controlling whether to perform the conversion in the color matching step before the rendering or following the rendering. Appropriately controlling whether to perform color matching before rendering or following rendering enables color reproducibility to be improved.

In an ink jet recording method, a surface of a recording paper, in which a base paper contains a pulp fiber and a filler, one surface of the base paper being coated with a polyvalent metal salt in a coating amount of from 0.1 to 3 g / m2, having a basis weight of from 63 to 100 g / m2 and an internal bond strength of from 0.05 to 0.2 N·m is printed using an ink of at least one color made of at least a pigment, a water-soluble organic solvent, water and a surfactant and having a surface tension of from 25 to 37 mN / m. According to the method, the color reproduction is improved, the inter color bleeding and the feathering of characters are reduced, the double-sided printability is provided by reducing curling and cockling occurring immediately after printing, and curling and cockling occurring after allowing to stand and drying are also reduced.

An electrooptic device includes: a display panel; an illuminating unit that emits light onto the display panel; an ambient-light measuring unit that measures the illuminance of ambient light; a luminance control unit including a light control profile for obtaining the optimum surface luminance of the display panel, the luminance control unit obtaining the optimum surface luminance on the basis of the measured illuminance of the ambient light using the light control profile, and controlling the luminance of the light to be emitted from the illuminating unit to provide the display panel with the optimum surface luminance; a display-mode switching unit that switches the display panel to a transmission display mode when the illuminance of the ambient light measured by the ambient-light measuring unit is lower than a predetermined illuminance, and switches the display panel to a reflection display mode when the illuminance of the ambient light is higher than the predetermined illuminance; and a storage unit that stores a gamma value for the transmission display for the transmission display mode and a gamma value for the reflection display for the reflection display mode as a plurality of tables. When the display panel is switched to the transmission display mode by the display-mode switching unit, the gamma value for the transmission display is obtained from the plurality of tables stored in the storage unit, and the gamma value for the transmission display is applied. When the display panel is switched to the reflection display mode by the display-mode switching unit, the gamma value for the reflection display is obtained from the plurality of tables stored in the storage unit, and the gamma value for the reflection display is applied.

The invention relates to a liquid crystal display used as a display unit of an electronic apparatus and provides a small liquid crystal display having a thin picture frame, the display having an excellent cooling function, high luminance, and high color reproducibility. The liquid crystal display includes a rear frame having an upstanding portion formed by bending an end of a longer side thereof and a heat sink which is in thermal contact with the rear frame. Thus, heat generated at LEDs can be efficiently radiated. The liquid crystal display also includes a liquid crystal display panel driving circuit which is divided into a data substrate and a control substrate. The liquid crystal display can be provided in a compact structure having a thin picture frame by disposing the data substrate on a side surface of the liquid crystal display and disposing the control substrate on the side of the heat sink.