Illumination device and liquid crystal display device

A technology for lighting devices and liquid crystal panels, which is applied to lighting devices, components of lighting devices, lighting and heating equipment, etc., to achieve the effects of suppressing moiré, high display quality, and suppressing expansion

Inactive Publication Date: 2010-12-08
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in a liquid crystal display device, it is known that Moiré occurs due to the pitch of the prisms used in the backlight and the p

Method used

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  • Illumination device and liquid crystal display device
  • Illumination device and liquid crystal display device
  • Illumination device and liquid crystal display device

Examples

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Example Embodiment

[0031] Hereinafter, embodiments of the lighting device and the liquid crystal display device of the present invention will be described with reference to the drawings.

[0032] figure 1 It is a cross-sectional view showing the liquid crystal display device 1 according to the embodiment of the present invention. The liquid crystal display device 1 includes a liquid crystal display panel (liquid crystal panel with microlens) 50 and a lighting device 10 arranged under the liquid crystal display panel 50 (on the side opposite to the display surface).

[0033] The lighting device 10 includes a light guide plate 12, an LED (Light Emitting Diode) 14 as a light source arranged on one side of the light guide plate 12, a reflective plate 16 arranged under the light guide plate 12, and a light guide plate 12 (liquid crystal Panel side) prism sheet 18.

[0034] A plurality of inclined surfaces are formed on the lower part of the light guide plate 12 facing the reflective plate 16, and the plur...

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PUM

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Abstract

An illumination device (10) includes: a light source (14) which emits light; a light guiding plate (12) for propagation of the emitted light; and a prism sheet (18) having a plurality of prisms (26) for refracting the propagating light. The prism sheet (18) contains anisotropic particles (31) having diffusion anisotropy.The arrangement direction (18a) of the prisms (26) is shifted from the longitudinal direction (31a) of the anisotropic particles (31) by an angle greater than 0 and smaller than 5 degrees on the planar direction of the prism sheet (18). This can effectively suppress generation of moire while suppressing spread of the light luminance half-value angle.

Description

technical field [0001] The present invention relates to an illuminating device and a liquid crystal display device. Background technique [0002] In recent years, liquid crystal display devices have been widely used as display devices in monitors, projectors, portable information terminals, mobile phones, and the like. A liquid crystal display device generally changes the transmittance (or reflectance) of the liquid crystal display panel according to a driving signal, modulates the intensity of light from a light source irradiating the liquid crystal display panel, and displays images and characters. Liquid crystal display devices include a direct-view display device that directly observes images displayed on a liquid crystal display panel, and a projection display device (projector) that enlarges and projects images displayed on a liquid crystal display panel on a screen through a projection lens, etc. . [0003] A liquid crystal display device applies driving voltages co...

Claims

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Application Information

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IPC IPC(8): F21V5/00F21S2/00F21V5/02G02B5/02G02B5/04G02F1/13357F21Y101/02G02B6/00
CPCG02B6/0051G02B5/0226G02F1/133615G02B5/0257G02B6/0053G02B5/045
Inventor 臼仓奈留村尾岳洋
Owner SHARP KK
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