37results about How to "Wide color reproduction range" patented technology

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.

The present invention provides a color image display device which improves color reappearance performance by a color filter consisting of RGB and YMC6. The invention comprises a display faceplate with the color filter which forms one pixel area with red, green, blue, yellow, fuchsin and cyan color filter areas, a color calculating part which generates a six-color signal comprising red, green, blue, yellow, fuchsin and cyan signals based on a RGB signal input from outside and a control part which controls the display of each color filter area of the display faceplate based on the six-color signal and displays an image corresponding to the RGB signal at the display faceplate. Except the red, green and blue color filter areas, the present invention is also provided with the yellow, fuchsin and cyan color filter areas, and one pixel area is formed by the areas, which can enlarge the color display range. Besides, even if an input image datum is the RGB signal, the yellow, fuchsin and cyan signals can also be generated and are displayed by the six-color signal, and the general RGB signal can also be used.

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.

The present invention discloses a method for driving a light-emitting diode, which includes the step of adjusting the brightness of the light-emitting diode with a current density in the range equal to or less than 20A / cm2. A light emitting diode includes a p-type layer, an n-type layer, and a light-emitting layer, which is arranged between the p-type layer and the n-type layer and has an indium-containing quantum well structure. Each of the p-type layer, the n-type layer and the light emitting layer includes a nitrogen-based group III-V compound semiconductor crystal having a wurtzite structure. The light emitting layer has a main surface inclined at an angle of 0.25° to 2° with respect to the c-plane.

A filter for a display device includes a transparent substrate; a near infrared ray blocking layer; and electromagnetic shielding layer; an external light blocking layer; and a color compensation layer. The near infrared ray blocking layer is formed on the transparent substrate and includes a metal thin film and a metal oxide thin film which are alternately layered, each of the metal thin film and the metal oxide thin film being layered one or more times. The electromagnetic shielding layer is formed on the near infrared ray blocking layer and includes a metal mesh pattern. The external light blocking layer includes an external light blocking pattern, the external light blocking pattern including a plurality of external light blocking parts with a wedge shape which are filled with a light absorbing material and a conductive material. The color compensation layer is formed on the external light blocking layer and includes a polymer resin and at least two kinds of colorants selectively absorbing lights. The filter has a transmittance of 5% or less at an 850 nm wavelength. The filter has excellent performance in blocking near infrared rays and electromagnetic waves and high transmittance to visible light.

A display displays a color image by using a light source of at least four or more primary colors, and at least one color of the light source is yellow. Thus, it is possible to provide a flat panel display that can acquire a wider color reproduction range without sacrificing luminance.

The invention relates to a liquid composition measurement method. One embodiment of the method comprises the steps of: i) subjecting a liquid composition containing fine particles and a solvent to the following pretreatment steps (a) to (c) to form an agglomerate of fine particles: (a) evaporating the solvent of the liquid composition at 120 DEG C for 10 yours in atmosphere, and drying the liquid composition; (b) burning the dried liquid composition resulting from the pretreatment step (a) at 700 DEG C after raising temperature from 120 DEG C to 700 DEG C over one hour; (c) cooling a burned product obtained in the pretreatment step (b) to room temperature, powdering the burned product to obtain agglomerates of the fine particle; and ii) vacuum degassing the agglomerates at 120 DEG C for 8 hours, and measuring physical properties of pores of the agglomerates by a nitrogen adsorption and desorption method.

The objective of the present invention is to provide a backlight device for a liquid crystal display device with which it is possible to suitably calibrate the white point and with which it is possible to realize a wide color gamut. An LED module that is a light source of the backlight device is configured using a magenta light-emitting body (110) having a structure that covers a blue LED element (112) with a red fluorescent body (114), a green light-emitting body (120) comprising a green LED element (122), and a red light-emitting body (130) comprising a red LED element (132). A backlight-driving circuit independently controls the luminance of light generated from the magenta light-emitting body (110), the luminance of light generated from the green light-emitting body (120), and the luminance of light generated from the red light-emitting body (130).

It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.

The present invention provides a color image display device which improves color reappearance performance by a color filter consisting of RGB and YMC6. The invention comprises a display faceplate with the color filter which forms one pixel area with red, green, blue, yellow, fuchsin and cyan color filter areas, a color calculating part which generates a six-color signal comprising red, green, blue, yellow, fuchsin and cyan signals based on a RGB signal input from outside and a control part which controls the display of each color filter area of the display faceplate based on the six-color signal and displays an image corresponding to the RGB signal at the display faceplate. Except the red, green and blue color filter areas, the present invention is also provided with the yellow, fuchsin and cyan color filter areas, and one pixel area is formed by the areas, which can enlarge the color display range. Besides, even if an input image datum is the RGB signal, the yellow, fuchsin and cyan signals can also be generated and are displayed by the six-color signal, and the general RGB signal can also be used.