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Illuminating device and liquid crystal display device

A technology for lighting devices and liquid crystal screens, used in lighting and heating equipment, lighting devices, semiconductor devices, etc., can solve problems such as environmental impact, and achieve the effect of simplifying the structure

Inactive Publication Date: 2005-12-07
SONY GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since CCFL uses mercury, when the backlight device, for example, is broken, there may be a bad influence on the environment due to outflow of mercury or the like

Method used

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  • Illuminating device and liquid crystal display device
  • Illuminating device and liquid crystal display device
  • Illuminating device and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0050] First, a first embodiment of the backlight device 20 according to the present invention will be described.

[0051] Such as Figure 5 As shown, the backlight device 20 includes a flat optical waveguide 31, blue light emitting units 32a, 32b arranged on the two end faces 31a, 31b in the width direction of the optical waveguide 31, and two end faces arranged in the longitudinal direction of the optical waveguide 31 Yellow light emitting units 33a, 33b of 31c, 31d.

[0052] Such as Figure 6 As shown, the backlight device 20 has a diffusion sheet 34, a first lens sheet 35 and a second lens sheet 36 arranged on the side of the light-emitting surface 31e of the main surface of the liquid crystal panel 10 of the light guide 31 in sequence and arranged on the light-emitting surface 31e side. Reflective sheet 37 on the opposite surface side. again, Figure 6 along Figure 5 Cross-sectional view of midline A-A'.

[0053] The optical waveguide 31 is a transparent plate havi...

no. 2 example

[0091] Also, the liquid crystal display 1 may have Figure 11 The backlight device 50 is shown instead of the backlight device 20 . Hereinafter, a backlight device 50 according to the present invention will be described as a second embodiment of the present invention. Hereinafter, the same parts as those of the backlight device 20 described in the first embodiment are given the same reference numerals as those of the backlight device 20 , and descriptions are omitted.

[0092] Such as Figure 11 As shown, the backlight device 50 includes the blue-green light emitting units 51a, 51b of the flat optical waveguide 31 arranged on the two end faces 31a, 31b of the width direction of the optical waveguide 31, and the two end faces arranged on the longitudinal direction of the optical waveguide 31 Red light emitting units 52a, 52b of 31c, 31d.

[0093] The backlight device 50 has the diffusion sheet 34, the first lens sheet 35, and the second lens sheet 36 arranged in sequence on ...

no. 3 example

[0101] The liquid crystal display device 1 can also have Figure 12 The backlight device 70 is shown instead of the backlight device 50 . Hereinafter, a backlight device 70 according to the present invention will be described as a second embodiment of the present invention. Hereinafter, the same parts as those of the backlight device 20 described in the first embodiment are given the same reference numerals as those of the backlight device 20 , and descriptions are omitted.

[0102] Such as Figure 12 As shown, the backlight device 70 includes a housing 71 substantially in the shape of a rectangular parallelepiped, and a light source 72 disposed at the bottom 71 a of the housing 71 . The backlight device 70 belongs to so-called direct backlight, and light emitted from the light source 72 is emitted from the entire upper surface of the housing 40 to illuminate the liquid crystal panel 10 by surface emission.

[0103] In this embodiment, the bottom 71 a and the four sides of ...

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Abstract

An illumination device including a first light source for emitting light of a first primary color, a second light source for emitting light of a second primary color, and a third light source for emitting light of a third primary color, wherein the first light source is a light emitting diode, the second light source is a fluorescent tube, and the third light source is either a light emitting diode or a fluorescent tube. The illumination device generates white light by mixing the light emitted by the first, second and third light sources. A liquid crystal panel is illuminated with the white light generated by the illumination device.

Description

(1) Technical field [0001] The invention relates to an illumination device for object illumination using white light illumination generated by light emitting diodes. The present invention also relates to a liquid crystal display with a liquid crystal screen and an illuminating device for illuminating the liquid crystal screen, and particularly to an illuminating device for illuminating the liquid crystal screen with white light generated by light emitting diodes. (2) Background technology [0002] As displays provided for televisions, personal computers, portable electronic devices, etc., thin and lightweight liquid crystal displays are widely used. The liquid crystal display has a liquid crystal display panel for displaying images, but the liquid crystal panel is not self-luminous. Accordingly, the liquid crystal display has lighting means for illuminating the liquid crystal screen, such as a backlight means for illuminating the liquid crystal screen from its backside. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357F21S2/00F21V8/00F21Y103/00H01L29/06H01L31/0328H05B35/00
CPCH05B35/00G02F1/133609G02F1/1335
Inventor 奥貴司
Owner SONY GRP CORP
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