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Illuminating device and liquid crystal display device

A lighting device and light source technology, which is applied in the direction of lighting devices, lighting device components, lighting and heating equipment, etc., can solve the problems of increasing cost and increasing the number of light sources, and achieve the effect of preventing dark lines and reducing distance

Inactive Publication Date: 2010-11-24
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, increasing the number of light sources will increase the cost

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

Embodiment approach 1

[0082] Hereinafter, the embodiments of the present invention are based on Figure 1 to Figure 8 Be explained. Furthermore, the present invention is not limited thereto.

[0083] In this embodiment, an illuminating device used as a backlight of a liquid crystal display device will be described.

[0084] figure 1 It is a cross-sectional view showing a schematic configuration of the liquid crystal display device 1 of the present embodiment. The liquid crystal display device 1 includes a backlight 2 (illumination device) and a liquid crystal display panel 3 arranged to face the backlight 2 .

[0085] The liquid crystal display panel 3 is the same as a general liquid crystal display panel used in a liquid crystal display device in the prior art. Although not shown in the figure, it is provided with an active matrix substrate on which a plurality of TFTs (thin film transistors) are formed. The CF substrate has a structure in which a liquid crystal layer is sealed with a sealing...

Embodiment approach 2

[0123]Then the second embodiment of the present invention is based on Figure 9 ~ Figure 17 Be explained.

[0124] In Embodiment 1 above, a tandem-type backlight was described, but in this embodiment, a tile-type backlight configured by arranging a plurality of light guides on the same plane without overlapping will be described.

[0125] Figure 9 It is a cross-sectional view showing a schematic configuration of the liquid crystal display device 21 of the present embodiment. . The liquid crystal display device 21 includes a backlight 22 (illumination device), and a liquid crystal display panel 23 arranged to face the backlight 22 . The structure of the liquid crystal display panel 23 is the same as that of the liquid crystal display panel 3 of the first embodiment.

[0126] Next, the configuration of the backlight 22 included in the liquid crystal display device 21 will be described below.

[0127] The backlight 22 is disposed behind the liquid crystal display panel 23 (...

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PUM

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Abstract

A backlight (illuminating device) (2) is provided with a plurality of light sources (5), a plurality of light guide bodies (7, 17, and so on) for surface-emitting light from the light source (5), and a diffuser plate (8) for diffusing light emitted from the light guide bodies (7, 17, and so on). The diffuser plate (8) is arranged to face the light emitting surfaces of the light guide bodies. The diffuser plate (8) is provided with a light quantity adjusting section (11) formed of a semi-transmissive material which transmits light by reducing the light quantity. The light quantity adjusting section (11) is arranged corresponding to a region where an emission line is generated by light from the light source (5). Namely, the light quantity adjusting section (11) is arranged to permit the orthograph of the light quantity adjusting section (11) to a light emitting region formed by the light emitting surface of each of the light guide bodies (7, 17 and so on) to cover the boundary between the light guide bodies. Thus, the illuminating device having high luminance uniformity is provided.

Description

technical field [0001] The present invention relates to an illuminating device used as a backlight of a liquid crystal display device, etc., and a liquid crystal display device including the illuminating device. Background technique [0002] In recent years, liquid crystal display devices, replacing cathode ray tube displays (CRT), have been rapidly popularized, and are widely used in liquid crystal televisions, monitors, mobile phones, etc., taking advantage of advantages such as energy saving, thin shape, and light weight. As a method for further utilizing these advantages, improvement of an illumination device (so-called backlight) arranged behind a liquid crystal display device can be mentioned. [0003] Illumination devices are mainly divided into two types: edge-light type (also called edge-light type) and direct-light type. The edge light type has a structure in which a light guide is provided behind the liquid crystal display panel, and a light source is provided at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00F21S2/00F21V3/00F21V3/04G02B6/00G02F1/13357F21Y101/02
CPCG02B6/0046G02B6/0068G02F1/133615G02B6/0078G02B6/0051G02B6/0021G02B6/008
Inventor 增田岳志味地悠作西田贤治
Owner SHARP KK