Light dispersing element, backlight module and LCD device

A liquid crystal display and backlight module technology, applied in the direction of diffusion elements, instruments, optics, etc., can solve the problems of increasing the production cost of the backlight module and insufficient brightness of the surface light source, and achieve the effect of improving the display quality and saving the production cost

Active Publication Date: 2009-12-30
AU OPTRONICS CORP
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Problems solved by technology

However, the above-mentioned methods are not easy to form a relatively concentrated light pattern, which leads to insufficient luminance of the surface light source provided by the backlight module. Therefore, it is necessary to add optical films such as brightness enhancement films to improve the light quality, but it also relatively increases the production of backlight modules. cost

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  • Light dispersing element, backlight module and LCD device
  • Light dispersing element, backlight module and LCD device
  • Light dispersing element, backlight module and LCD device

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Embodiment Construction

[0051] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

[0052] Figure 1A A partial top view showing a light diffusing element according to an embodiment of the present invention, Figure 1B for along Figure 1A The schematic cross-sectional view of the light diffusion element shown by the AA' section line of , and Figure 1C for along Figure 1A The schematic cross-sectional view of the light diffusing element shown by the BB' section line. Please also refer to Figure 1A , Figure 1B and Figure 1C , the light diffusing element 100 of this embodiment has a light incident surface 110 and a light exit surface 120 . There is at least one light scattering pattern 112 on the light emitting surface 120 .

[0053] In this embodiment, the track of the light scattering pattern 112 is a continuous curve 112a, so the w...

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Abstract

The invention provides a photodiffusion element, a backlight module and a liquid crystal display, wherein, the photodiffusion element is provided with a light incidence surface and a light leaving surface. The light leaving surface is provided with at least one light scattering pattern, wherein, the track of the light scattering pattern is a continuous curve. The continuous curve orderly winds on the light leaving surface to form a plurality of closed graphs, and two adjacent closed graphs are partially overlapped. By producing at least one light scattering pattern on the photodiffusion element, the invention ensures that the photodiffusion element can provide evener and higher-luminance leaving light when the photodiffusion element is matched with a light source to use. Therefore, the adoption of the backlight module of the photodiffusion element can reduce the service quantity of optical films so as to save cost and reduce the assembly thickness. Similarly, the liquid crystal display adopts the backlight module, which can improve the display quality, save the production cost, and conform to the design aims of lightness, thinness, shortness and smallness.

Description

technical field [0001] The present invention relates to the technology and application of an optical element and a light source module, and in particular relates to a light diffusion element, a backlight module and a liquid crystal display. Background technique [0002] Liquid crystal displays (LCDs) have the advantages of thin thickness, high image quality, low power consumption, and no radiation, and gradually become the mainstream of Flat Display Apparatus (FDA). Generally speaking, a liquid crystal display is composed of a backlight module and a liquid crystal display panel. Since the liquid crystal display panel is a non-self-luminous panel, the backlight module needs to provide a uniform surface light source to the liquid crystal display panel to display images. [0003] Generally speaking, in order to provide a uniform surface light source for the backlight module, several diffusion plates are usually used to diffuse the point or linear light sources disposed in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02F1/13357
Inventor 陈明伦洪春长张泰豪方秀美陈秋君
Owner AU OPTRONICS CORP
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