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Liquid crystal display device

A technology of liquid crystal display device and display panel, which is applied in the field of light sources, and can solve problems such as the uniform emission of light from light guide plates

Active Publication Date: 2008-01-09
JAPAN DISPLAY INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the case of using LEDs as light-emitting elements, there is a problem that it is difficult to uniformly emit light from the light guide plate because LEDs are point light sources.

Method used

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  • Liquid crystal display device
  • Liquid crystal display device
  • Liquid crystal display device

Examples

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Embodiment Construction

[0024] FIG. 1 is a plan view showing a liquid crystal display device 100 of the present invention. The liquid crystal display device 100 is composed of a liquid crystal panel 1 , a backlight 110 , and a control circuit 80 . Signals and power supply voltage required for display on the liquid crystal panel 1 are supplied from the control circuit 80 . The control circuit 80 is mounted on the flexible substrate 70 and transmits signals to the liquid crystal panel 1 through the wiring 71 and the terminal 75 .

[0025] The backlight 110 is composed of a light guide plate 120 , LEDs, and a storage case 180 . The backlight 110 is provided for the purpose of irradiating light to the liquid crystal panel 1 . In the liquid crystal panel 1 , display is performed by controlling the amount of transmission or reflection of light irradiated from the backlight 110 . The backlight 110 is provided on the rear side or the front side of the liquid crystal panel 1 to overlap with the viewer, but...

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PUM

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Abstract

A liquid-crystal display device is provided which includes: a display panel; a backlight that applies light onto the display panel; a light emitting device of the backlight; a light guide into which the light from the light emitting device comes; and a mold around the light guide, wherein the mold reflects the light from the light emitting device.

Description

technical field [0001] The present invention relates to a light source of a non-self-illuminating display device, and particularly to a liquid crystal display device including a backlight having a light guide plate and using LEDs as a light source. Background technique [0002] In recent years, liquid crystal display devices have been widely used as display devices. In particular, a liquid crystal display device is used as a display unit of a portable device because of its thin shape, light weight, and power saving characteristics. [0003] However, since the liquid crystal display device is not a self-luminous type, an illumination unit is required. Generally, a planar lighting device called a backlight is commonly used as a lighting device used in a liquid crystal display device. Conventionally, cold-cathode discharge tubes have been used as light-emitting elements (also referred to as light sources) of backlights, but in recent years LEDs (light-emitting diodes) have al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02F1/133G02F1/1335
CPCH01L33/54G09G3/32G09G3/3406G02B6/003G02B6/0038G02B6/0083G02B6/0031G02B6/0021H01L2224/48091H01L2224/49107H01L2924/181H01L2924/1815H01L2924/00014H01L2924/00012
Inventor 白石恭久西山清一
Owner JAPAN DISPLAY INC