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Light-emitting device, lighting device, and display device

A technology for light-emitting devices and lighting devices, applied in lighting devices, lighting and heating equipment, optics, etc., can solve the problems of light source concentration, limitation, and enlargement of the baffle part of the display panel, and achieve uniform brightness and fully uniform brightness. Effect

Inactive Publication Date: 2014-01-29
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the side-light type backlight unit, the light sources are arranged concentratedly at the edge of the light guide plate, so the heat generated by the light source is relatively concentrated, and the baffle portion of the display panel is also enlarged.
In addition, in edge-light type backlight units, local dimming control (local dimming) that has attracted attention as a control method capable of achieving high-quality display images and power saving Problems of small-divided area control to realize high-quality display images and power-saving

Method used

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  • Light-emitting device, lighting device, and display device
  • Light-emitting device, lighting device, and display device
  • Light-emitting device, lighting device, and display device

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Embodiment Construction

[0079] figure 1 It is an exploded perspective view showing the structure of the liquid crystal display device 100 according to the first embodiment of the present invention. Figure 2A is a schematic representation of the figure 1 A cross-sectional view of the liquid crystal display device 100 when the cross-section line A-A in FIG. The liquid crystal display device 100 as the display device of the present invention is a device for displaying an image on a display screen by outputting image information in a television, a personal computer, or the like. The display screen is formed by a liquid crystal panel 2 which is a transmissive display panel having a liquid crystal element and is formed in a rectangular flat plate shape. In the liquid crystal panel 2 , two directions in the thickness direction are defined as the front 21 side and the back 22 side. The liquid crystal display device 100 displays an image, and the image can be viewed from the front 21 side.

[0080] The l...

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Abstract

The present invention is a light-emitting device, which can be made thin, used in a backlight unit of a display device equipped with a display panel, said light-emitting device being capable of projecting light on a body to be irradiated with light, in such a manner that brightness is uniform in the direction of the surface of the body to be irradiated with light. The backlight unit (1) is provided with: a printed circuit board (12); a plurality of light-emitting parts (111) provided on the printed circuit board (12), and having a base (111b), and LED chip (111a), and a lens (112); and a first reflecting member (118) provided on the periphery of each light-emitting part, and having a first reflecting section (1181) and a second reflecting section (1182).

Description

technical field [0001] The present invention relates to a light emitting device provided in a backlight unit for irradiating light on the back surface of a display panel, an illuminating device including the light emitting device, and a display device. Background technique [0002] In the display panel, liquid crystal is sealed between two transparent substrates, and the direction of the liquid crystal molecules is changed by applying a voltage to change the light transmittance, thereby optically displaying predetermined images and the like. Since the liquid crystal itself is not a luminous body, in this display panel, for example, on the back side of the transmissive display panel, there is a light emitting diode (CCFL) or a light emitting diode (LED: Light Emitting Diode) as the light source. backlight unit. [0003] There are direct-light and edge-light backlight units. The direct-light backlight unit arranges light sources such as cold cathode tubes or LEDs on the botto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/60F21S2/00G02F1/13357H01L33/54H01L33/58F21Y101/02
CPCG02F1/133603H01L25/0753H01L33/58H01L33/60G02F1/133605G02F2001/133607G02F1/133611H01L2224/73265G02F1/133607H01L2924/181H01L2924/1815H01L2924/00012H01L27/156H01L33/56
Inventor 小野泰宏增田麻言大久保宪造白井伸弘和田孝澄
Owner SHARP KK
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