Light source device and backlight module thereof

A technology of a light source device and an optical fiber coupling device, which is applied in the direction of optics, nonlinear optics, and optical waveguide coupling, can solve the problem of high cost of a light source device with variable light output color, and achieve the effect of cost saving and uniform incident light

Inactive Publication Date: 2005-06-22
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the shortcoming of the high cost of the variable light emitting color light source device in the prior art, the present invention provides a low cost variable light emitting color light source device

Method used

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  • Light source device and backlight module thereof
  • Light source device and backlight module thereof
  • Light source device and backlight module thereof

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Embodiment Construction

[0015] Please refer to Figure 3 and Figure 4 , are respectively a side schematic view and a front schematic view of the first embodiment of the backlight module of the present invention. The backlight module 3 includes a light guide plate 30 and a light source device 31, the light guide plate 30 includes a light incident surface 32 and a light output surface 33, the light source device 31 includes a plurality of point light sources 311, 312, 313, 314 and optical fibers The coupling device 34 , the multiple point light sources 311 , 312 , 313 , 314 are composed of light emitting diodes of different light colors, including blue light emitting diodes 311 , red light emitting diodes 312 , white light emitting diodes 313 and green light emitting diodes 314 . The optical fiber coupling device 34 is a multi-to-multiple optical fiber coupler, which is formed by winding multiple optical fibers and then fused at high temperature. 312, 313, 314; the fiber coupling device 34 also includ...

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Abstract

A light source device includes multiple point light sources with at least two luminous colors and a fiber-coupling device constituting multiple input ends and output ends, said input ends are set corresponding to said multiple point light sources. Said device can emit uniform color variable lights.

Description

【Technical field】 [0001] The invention relates to a light source device and a backlight module using the light source device. 【Background technique】 [0002] Backlight modules are widely used in display devices, such as liquid crystal displays, mobile phones, etc., but many display devices are non-self-illuminating displays, and the display function is mainly realized by controlling the passage or non-passage of light emitted by an external light source, so corresponding backlight or front lights are required. Light module, the backlight or front light module can guide the light emitted by the external light source to the display panel to realize the display function. [0003] see figure 1 , is a schematic side view of a prior art backlight module. The backlight module 1 includes a light guide plate 10 and a light source 11 , the light guide plate 10 includes a light incident surface 12 and a light output surface 13 , and the light source 11 is disposed opposite to the lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/38G02F1/1335G02F1/13357
Inventor 张仁淙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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