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Light guiding system, side-inlet type backlight module and liquid crystal display

A light introduction and collection system technology, applied in light guides, optical fiber light guides, planar/plate light guides, etc., can solve the problems of large brightness differences and affect the optical quality of backlight modules, so as to save energy, improve optical quality, and improve brightness. uneven dark effect

Inactive Publication Date: 2013-04-17
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small light-emitting angle of the light-emitting end of the optical fiber, the brightness difference between the front of the light-emitting end and the light-emitting end (that is, the left and right sides of the light-emitting end) is too large, resulting in a phenomenon of bright and dark. In severe cases, each light-emitting end can be distinguished The location seriously affects the optical taste of the backlight module

Method used

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  • Light guiding system, side-inlet type backlight module and liquid crystal display
  • Light guiding system, side-inlet type backlight module and liquid crystal display
  • Light guiding system, side-inlet type backlight module and liquid crystal display

Examples

Experimental program
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Embodiment 1

[0023] refer to figure 1 , the light introduction system 1 includes an ambient light collection system 10 , several optical fibers 20 , and several biconcave lenses 40 . Specifically, the ambient light collection system 10 faces and absorbs the ambient light CL, and then converts the ambient light CL into absorbed light SL. It is worth noting that the ambient light CL can be sunlight, light, or light emitted by other luminous objects. The wavelength of the absorbed light SL is within the wavelength range of visible light, that is, the absorbed light SL can be used as a backlight light source in a backlight module. Each optical fiber 20 has a light output end 21 and a light input end 22. The light input ends 22 of each optical fiber converge into a bundle and are adjacent to the ambient light collection system 10. The light output ends 21 of each optical fiber are arranged adjacent to the light guide plate 30. The light-incident side 31, preferably, each light-emitting end 21 ...

Embodiment 2

[0034] In the description of Embodiment 2, the same content as in Embodiment 1 will not be repeated here, and only the content that is different from Embodiment 1 will be described below.

[0035] Light-emitting diodes (LEDs), as an original backlight light source commonly used in backlight modules, use electric energy as the power to emit light. Of course, the original backlight light source can also be fluorescent lamps, CCFLs and other illuminants powered by electric energy.

[0036] refer to Figure 5The light introduction system 1 also includes a number of LEDs 70, the LEDs 70 and the light-emitting ends 21 are alternately arranged and adjacent to the light-incidence side 31 of the light guide plate 30, preferably, the LEDs 70 and the light-emitting ends 21 are equally spaced, and the light-emitting ends 21 and the light-incidence side A biconcave lens 40 is provided between 31, and of course, as mentioned above, the biconcave lens can also be replaced by a plano-concave...

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Abstract

The invention discloses a light guiding system, a side-inlet type backlight module and a liquid crystal display. The light guiding system comprises an ambient light collection system, a plurality of light guiding devices and a plurality of light scattering devices. The ambient light collection system faces ambient light and is used for absorbing the ambient light to generate absorbing light. Every light guiding device is provided with a light inlet end and a light outlet end, the light outlet end is close to a light inlet side of a light guiding plate, the light inlet end is close to the ambient light collection system, and the absorbed light enters into the light inlet end and is transmitted to the light outlet end to form backlight light source. Every light scattering device which is arranged between the light outlet end and the light inlet side is used for enlarging the beam angle of light beam emitted from the light outlet end. According to the light guiding system, the side-inlet type backlight module and the liquid crystal display, the light guiding system uses the light scattering device for enlarging the beam angle of light beam emitted from the light outlet end, so that the phenomenon of uneven brightness of the light beam emitted from the light outlet end is improved and the optical taste of the side-entering type backlight module is improved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a light introduction system, a side-entry backlight module and a liquid crystal display. Background technique [0002] Nowadays, most of the backlight modules of LCD (Liquid Crystal Display) use the original light source as the backlight light source. The original light source mentioned here refers to the light source that uses energy such as electricity to make itself emit light, such as LED. LED has the advantage of high efficiency and energy saving, so it is widely used as a backlight light source in a backlight module. However, as people pay more attention to energy saving and environmental protection in the future, the power consumption of the backlight light source in the current backlight module needs to be further reduced, which requires reducing the number of LEDs used to reduce the power consumption of the backlight light source, or using a new energy-sav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00F21S19/00G02F1/13357F21Y101/02
CPCG02B6/0006G02B6/0008G02B6/0028G02B6/0068G02F1/133615G02F1/133618G02B6/0011G02F1/133G02F1/133524G02F1/1336
Inventor 胡哲彰贺虎
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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