Abstract: A backlight apparatus includes an LED substrate having a principal surface over which a plurality of light-emitting elements that emit excitation light are arrayed, a phosphor layer containing a phosphor that emits fluorescence upon receiving the excitation light, a wavelength-selective reflecting layer disposed between the phosphor layer and the LED substrate, and a louver film disposed between the wavelength-selective reflecting layer and the LED substrate and having a plurality of louvers. The wavelength-selective reflecting layer has different transmittances according to wavelengths and/or angles of incidence of light falling thereon. The louver film blocks the fluorescence and the excitation light falling thereon at an angle greater than or equal to a first angle and smaller than 90 degrees with respect to a direction normal to a film surface of the louver film.

Abstract: A liquid crystal display device (100) according to the present invention is provided with a liquid crystal display panel (10) and a backlight device (50) which emits light toward the back surface (10r) of the liquid crystal display panel. The backlight device comprises: an LED substrate (21) that has a front surface (21s) on which a plurality of LED chips (22) are arranged so as to emit excitation light toward the back surface of the liquid crystal display panel; a phosphor layer (25) which contains a phosphor (25q) that emits fluorescent light upon reception of the excitation light; a wavelength selective reflection layer (28) which is arranged between the phosphor layer and the LED substrate, and wherein the transmittance of the excitation light is higher than the transmittance of the fluorescent light; and an optical layer laminate (30) which is arranged on the liquid crystal display panel side of the phosphor layer.

Abstract: A liquid crystal display apparatus includes a liquid crystal display panel and a backlight device disposed on a rear face of the liquid crystal display panel. The backlight device includes a chassis, a plurality of LED units being disposed on the chassis and arranged in at least one direction, and a cooling structure thermally coupled to rear faces of the plurality of LED units. The cooling structure includes a plurality of enclosed spaces, each of the plurality of enclosed spaces containing a coolant in which a liquid phase and a gas phase coexist at room temperature. Each of the plurality of enclosed spaces is disposed correspondingly to at least one LED unit among the plurality of LED units arranged in the at least one direction.

Abstract: A liquid crystal display apparatus includes a liquid crystal display panel and a backlight device disposed on a rear face of the liquid crystal display panel. The backlight device includes a chassis, a plurality of LED units being disposed on the chassis and arranged in at least one direction, and a cooling structure thermally coupled to rear faces of the plurality of LED units. The cooling structure includes a plurality of enclosed spaces, each of the plurality of enclosed spaces containing a coolant in which a liquid phase and a gas phase coexist at room temperature. Each of the plurality of enclosed spaces is disposed correspondingly to at least one LED unit among the plurality of LED units arranged in the at least one direction.

Abstract: A liquid crystal display device (100) according to the present invention is provided with a liquid crystal display panel (10) and a backlight device (50) which emits light toward the back surface (10r) of the liquid crystal display panel. The backlight device comprises: an LED substrate (21) that has a front surface (21s) on which a plurality of LED chips (22) are arranged so as to emit excitation light toward the back surface of the liquid crystal display panel; a phosphor layer (25) which contains a phosphor (25q) that emits fluorescent light upon reception of the excitation light; a wavelength selective reflection layer (28) which is arranged between the phosphor layer and the LED substrate, and wherein the transmittance of the excitation light is higher than the transmittance of the fluorescent light; and an optical layer laminate (30) which is arranged on the liquid crystal display panel side of the phosphor layer.

Abstract: A backlight device includes an LED substrate including LED devices arrayed and a quantum dot layer disposed to receive light output from the LED devices. Each LED device emits first blue light and at least one of first green light and first red light, and when relative radiance of the first blue light is 1.00, relative radiance of the first green light is 0.21 or less and relative radiance of the first red light is 0.48 or less. The quantum dot layer includes, in accordance with the at least one of the first green light and the first red light, at least one of a green quantum dot excited by the first blue light and emitting second green light and a red green quantum dot excited by the first blue light and emitting second red light, and the quantum dot layer contains 300 ppm or less of cadmium.

Abstract: A backlight device includes an LED substrate including LED devices arrayed and a quantum dot layer disposed to receive light output from the LED devices. Each LED device emits first blue light and at least one of first green light and first red light, and when relative radiance of the first blue light is 1.00, relative radiance of the first green light is 0.21 or less and relative radiance of the first red light is 0.48 or less. The quantum dot layer includes, in accordance with the at least one of the first green light and the first red light, at least one of a green quantum dot excited by the first blue light and emitting second green light and a red green quantum dot excited by the first blue light and emitting second red light, and the quantum dot layer contains 300 ppm or less of cadmium.

Abstract: Provided is a display apparatus in which the occurrence of color nonuniformity can be prevented or reduced. A display apparatus in which light from a light source unit is transmitted through a fluorescent film before reaching a display panel, includes an optical path changing member provided between the light source unit and the fluorescent film and for changing optical path lengths within the fluorescent film of the light rays entering the fluorescent film from an incident surface of the fluorescent film.

Abstract: Provided is a display device comprising a liquid-crystal panel and an optical sheet member including multiple stacked optical sheets emitting light from a light source toward the liquid-crystal panel, which can alleviate unevenness in light even in the case where, for example, light with such unevenness is emitted from the optical sheet member due to warps or wrinkles generated in the optical sheet member caused by heat generated by the light source. A diffusion sheet is provided between a liquid-crystal panel and an optical sheet member with a gap from the optical sheet member. The light emitted through the optical sheet member is diffused by the diffusion sheet and gap, and then enters the liquid-crystal panel.

Abstract: A light source unit, comprising: a light guide plate; a light source facing to a peripheral surface of the light guide plate; and a reflection part reflecting light emitted from one surface of the light guide plate, wherein the reflection part comprises: an elongated portion, which is positioned at an outside of an edge of the light guide plate, being elongated in a direction crossing the one surface; and a protrusion portion, which is located at a position of the elongated portion that is away from the one surface, protruding from the position to the one surface, wherein the one surface side of the light source is covered with the protrusion portion.

Abstract: Provided is a display device comprising a liquid-crystal panel and an optical sheet member including multiple stacked optical sheets emitting light from a light source toward the liquid-crystal panel, which can alleviate unevenness in light even in the case where, for example, light with such unevenness is emitted from the optical sheet member due to warps or wrinkles generated in the optical sheet member caused by heat generated by the light source. A diffusion sheet is provided between a liquid-crystal panel and an optical sheet member with a gap from the optical sheet member. The light emitted through the optical sheet member is diffused by the diffusion sheet and gap, and then enters the liquid-crystal panel.

Abstract: A light source unit, comprising: a light guide plate; a light source facing to a peripheral surface of the light guide plate; and a reflection part reflecting light emitted from one surface of the light guide plate, wherein the reflection part comprises: an elongated portion, which is positioned at an outside of an edge of the light guide plate, being elongated in a direction crossing the one surface; and a protrusion portion, which is located at a position of the elongated portion that is away from the one surface, protruding from the position to the one surface, wherein the one surface side of the light source is covered with the protrusion portion.