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Light irradiation device, backlight device and display device

A technology for a light irradiation device and a backlight device, which is applied to lighting devices, components of lighting devices, optics, etc., can solve problems such as constraints, and achieve the effects of improving strength and suppressing thickness

Inactive Publication Date: 2017-09-29
OG KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small and medium-sized light guide plates for mobile phones and mobile terminals need to be thinner, but the thinning in injection molding is restricted by the size of the panel

Method used

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  • Light irradiation device, backlight device and display device
  • Light irradiation device, backlight device and display device
  • Light irradiation device, backlight device and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] Hereinafter, the present invention will be specifically described based on the drawings showing embodiments of the present invention. In addition, although the display device is described as an example of a liquid crystal display device in this embodiment, the present invention is applicable to devices having functions such as displaying images on a display screen, and further applicable to devices having a touch panel capable of performing input operations. Wait.

[0069] figure 1 is a perspective view of a display device 1 according to an embodiment of the present invention, figure 2 is a longitudinal side view of the display device 1 . The display device 1 includes: a liquid crystal display panel 20 having a display surface 20a for displaying images, a backlight device 21 disposed on the back of the liquid crystal display panel 20, a frame 11 covering the outer periphery and side surfaces of the display surface 20a of the liquid crystal display panel 20, and a bac...

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PUM

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Abstract

The substrate 32 is in a rectangular shape, and a plurality of light-emitting elements 4, 4... are arranged on an end surface 32a of the substrate 32, and a translucent sealing member 5 is fixed on an end surface 32a to seal the plurality of light-emitting elements 4, 4·. ··. The thickness of the light irradiation device 3 is relatively thin, and conducts the heat generated by the light emitting elements 4, 4... to the substrate 32 to dissipate heat. Even if the thickness of the substrate 32 is reduced, the heat dissipation performance of the substrate 32 can be maintained or improved by increasing the size of the substrate 32 in the direction where one end surface 32 a of the substrate 32 intersects.

Description

technical field [0001] The present invention relates to a light irradiation device, a backlight device, and a display device for irradiating light incident on an end surface of an edge-illuminated light guide plate or the like. Background technique [0002] A display device using a display panel such as a liquid crystal uses a backlight device using LED (Light Emitting Diode) or the like as a light source, and enters light from the rear side of the display panel to display characters, images, video, etc. on the screen. For example, backlight devices for small and medium-sized liquid crystal displays used in mobile phones, mobile terminals, etc. often use an edge lighting method in which light is incident on the end surface of the light guide plate to emit light from the surface of the light guide plate in order to achieve thinning. [0003] Patent Document 1 discloses a display device using an edge-lit backlight device. The display device includes: a display element (equiva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00
CPCF21K9/20F21V19/002F21Y2105/00G02B6/0068G02B6/009G02B6/0083F21Y2115/10G02F1/133628F21V19/0015F21V19/0025G02B6/0073
Inventor 小野浩司鹫见武志
Owner OG KK