Abstract: In a display device, a display includes a display area for displaying a display image, and a peripheral area surrounding the display area. A control circuit receives, from an illuminance sensor for detecting an illuminance of an incident light, the illuminance and controls the display. The display area includes a first end area that is an area located near the peripheral area. The control circuit derives a brightness ratio that is a ratio between a brightness of the first end area and a brightness of the peripheral area, based on the illuminance and image data for the display image. The control circuit controls, when the brightness ratio is larger than a brightness ratio threshold value that is a predefined value, the display to cause the brightness ratio to be equal to or smaller than the brightness ratio threshold value.

Abstract: In a display device, a display includes a display area for displaying a display image, and a peripheral area surrounding the display area. A control circuit receives, from an illuminance sensor for detecting an illuminance of an incident light, the illuminance and controls the display. The display area includes a first end area that is an area located near the peripheral area. The control circuit derives a brightness ratio that is a ratio between a brightness of the first end area and a brightness of the peripheral area, based on the illuminance and image data for the display image. The control circuit controls, when the brightness ratio is larger than a brightness ratio threshold value that is a predefined value, the display to cause the brightness ratio to be equal to or smaller than the brightness ratio threshold value.

Abstract: A display device includes a display, a protective layer, and a bonding layer. The display has a polarizing plate configuring an image display plane of a display. The protective layer faces the polarizing plate. The bonding layer is disposed between the polarizing plate and the protective layer and is directly bonded to the polarizing plate and the protective layer. The bonding layer contains a hygroscopic agent.

Abstract: A display device includes a display, a protective layer, and a bonding layer. The display has a polarizing plate configuring an image display plane of a display. The protective layer faces the polarizing plate. The bonding layer is disposed between the polarizing plate and the protective layer and is directly bonded to the polarizing plate and the protective layer. The bonding layer contains a hygroscopic agent.

Abstract: The backlight device 12 of the present embodiment includes: a plurality of LEDs 17; a chassis 14 that is a plate-shaped member and on which the LEDs 17 are arranged; a plurality of diffusion lenses 40 that are fixed to the chassis 14, that individually cover the LEDs 17 from the side opposite to the chassis 14, and that exert optical effects on the light from the LEDs 17; a reflective sheet 21 that covers the plate surface of the chassis 14, that exposes the LEDs 17, and that has the lens insertion holes 21 through which the diffusion lenses 40 are respectively inserted; and reflective sheet holding members 30 that hold the reflective sheet 21 from the side opposite to the chassis 14, that engage the adjacent diffusion lenses 40 and 40, and that extend on the sheet surface of the reflective sheet 21 between the adjacent diffusion lenses 40 and 40.

Abstract: The purpose of the present invention is to make a change in the chromaticity of an optical member due to use unlikely to occur. A method of manufacturing a prism sheet 23c as an optical member 23 to be used in a backlight unit 12 that supplies light to a liquid crystal panel 11 and transmits light from LEDs 24 as light sources of the backlight unit 12, includes a step of stabilizing the chromaticity of transmitted light by irradiation with light from chromaticity stabilizing LEDs 32 as chromaticity stabilizing light sources having a dominant emission wavelength in a blue wavelength region.

Abstract: The backlight device 12 of the present embodiment includes: a plurality of LEDs 17; a chassis 14 that is a plate-shaped member and on which the LEDs 17 are arranged; a plurality of diffusion lenses 40 that are fixed to the chassis 14, that individually cover the LEDs 17 from the side opposite to the chassis 14, and that exert optical effects on the light from the LEDs 17; a reflective sheet 21 that covers the plate surface of the chassis 14, that exposes the LEDs 17, and that has the lens insertion holes 21 through which the diffusion lenses 40 are respectively inserted; and reflective sheet holding members 30 that hold the reflective sheet 21 from the side opposite to the chassis 14, that engage the adjacent diffusion lenses 40 and 40, and that extend on the sheet surface of the reflective sheet 21 between the adjacent diffusion lenses 40 and 40.

Abstract: An illumination device capable of suppressing the generation of uneven luminescence is provided. The illumination device comprises: an LED package (25); a reflective sheet (23) with an exposure hole (23c) for exposing the LED package (25); and a pressing member (27) for pressing down the reflective sheet (23). The pressing member (27) has a sheet pressing section (27a) arranged so to surround the circumference of the LED package (25), and an edge section (23d) of the exposure hole (23c) is pressed down by the sheet pressing section (27a).

Abstract: An object of the present invention is to provide a lighting device configured to suppress uneven brightness. A backlight unit 12 according to the present invention includes LEDs 17 as light sources, a chassis 14 housing the LEDs 17 and including an opening 14b through which light from the LEDs 17 exits, an optical member 15 arranged to cover the opening 14b and face the LEDs 17, and a reflection sheet 19 arranged in the chassis 14 to face the optical member 15. A surface in the chassis 14 facing the optical member 15 includes a light source arrangement area LA in which the LEDs 17 are arranged and a light source non-arrangement area LN in which no LED 17 is arranged. The light source arrangement area LA corresponds to a low light reflectance area LRA having relatively low light reflectance, and the light source non-arrangement area LN corresponds to a high light reflectance area HRA having relatively high light reflectance.

Abstract: The technology of the present invention provides a lighting device in which uneven brightness is less likely to occur. The backlight unit 12 includes an LED board 18 on which an LED 17 as a light source is mounted, a chassis 14 including a bottom plate 14a arranged on a side of the LED 17 that is opposite to a light exit side, and a LED board holder 20 fixed to the bottom plate 14a such that the LED board 18 is sandwiched between the LED board holder 20 and the bottom plate 14a. The LED 17 is arranged such that the bottom plate 14a of the chassis 14 includes at least one arrangement area LA of the LED 17 and at least one non-arrangement area LN of the LED 17. The LED board holder 20 includes a light leading portion 22 protruding toward the light exit side that is opposite to the LED board 18 side and leading the light toward the light exit side.

Abstract: The purpose of the present invention is to make a change in the chromaticity of an optical member due to use unlikely to occur. A method of manufacturing a prism sheet 23c as an optical member 23 to be used in a backlight unit 12 that supplies light to a liquid crystal panel 11 and transmits light from LEDs 24 as light sources of the backlight unit 12, includes a step of stabilizing the chromaticity of transmitted light by irradiation with light from chromaticity stabilizing LEDs 32 as chromaticity stabilizing light sources having a dominant emission wavelength in a blue wavelength region.

Abstract: Uneven brightness in light exited from a light guide plate is less likely to be caused in a lighting device. A backlight device 24 includes an LED unit 32, a light guide plate 20 having a light entrance surface 20a on its side surface, and a backlight chassis 22 including a bottom plate 22a and housing the LED unit 32 and the light guide plate 20 on a front surface of the bottom plate. The LED unit 32 is arranged to face the light entrance surface 20a of the light guide plate 20. The backlight chassis 22 includes a positioning pin 40 on its front surface of the bottom plate 22a. The positioning pin 40 is projected from the front surface. The light guide plate 20 has a recessed fitting portion 38 corresponding to the positioning pin 40, and the positioning pin 40 is fitted to the fitting portion 38. A through hole 40a is formed in peripheral surface of the positioning pin 40 so as to be through the positioning pin 40.

Abstract: Provided is a liquid crystal display device and a backlight unit that are of high quality and have a simple configuration that a mechanism cooling a cooling medium is not included. Included are a liquid crystal display panel and an LED backlight unit including an LED light source emitting light toward the panel, and a chassis plate on which the light source is disposed, the plate including a through flow path for cooling air dissipating heat from the light source, wherein the path includes a main duct introducing the cooling air and disposed along one side of the panel, and a branch duct branching off from the main duct, aligned along a disposed direction of the light source, and including an exhaust port disposed at an end of the branch duct and discharging the cooling air to outside of the device.