Side-light back light module

A backlight module and edge-lit technology, which is applied in the field of edge-lit backlight modules, can solve the problems of complicated and difficult optical design of light guide plates, and achieve the best light enhancement effect and the effect of improving the positive brightness.

Inactive Publication Date: 2012-05-23
CHI MEI CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, although a lot of experience has been accumulated in the optimal design of the microstructure in the past, there is still a lot of room for improvement in the light output brightness and light utilization efficiency of the light guide plate, and the optical design of the light guide plate is more complicated. It also increases a lot of difficulty when actually introducing the production process

Method used

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of three preferred embodiments with reference to the drawings.

[0025] Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

[0026] refer to figure 1 , figure 2 , image 3 , The first preferred embodiment of the edge-lit backlight module of the present invention includes a microstructured optical plate 1 , a reflective plate 2 , a light emitting device 4 and a diffusion film 5 . The microstructured optical plate 1 is composed of transparent methyl methacrylate resin (PMMA resin), and includes a light-emitting surface 111 and a light-incident surface 121 located on the opposite side of...

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Abstract

The invention provides a side-light back light module including a micro structure optical board, a reflecting board and a light emitting device. The micro structure optical board includes a light outgoing face and a light incoming face disposed oppositely to the light outgoing face. The reflecting board includes at least one reflecting face. An air layer is defined between the reflecting board and the micro structure optical board. The light emitting device is disposed between the micro structure optical board and the reflecting board and is disposed on one or side of the air layer. The light emitting device can generate light beams and the light beams can be projected by the air layer to the reflecting face of the reflecting board. In the invention, by utilizing the different of the refractive indexes of the air layer and the micro structure optical board, a primary light collecting effect is generated. Thus, the optical design of the back light module can be simplified and the forward luminance of the back light module can be improved.

Description

technical field [0001] The invention relates to a backlight module, in particular to a high-efficiency side-light backlight module which can simplify the optical design of a microstructure optical plate and improve the forward luminance of the backlight module. Background technique [0002] The backlight module can be divided into direct type and edge type according to the position of the light source. Among them, the side-light structure is widely used as the structure of small and medium-sized backlight modules because the light-incident design with the light source arranged on the side can meet the demand for light weight and thinness in the consumer market. In the conventional edge light source structure, a light source, such as a cold cathode fluorescent lamp (CCFL) or a light emitting diode (LED), is arranged on one or both parallel sides of the light guide plate. The role of the light guide plate is to guide the light to pass from the inside of the light guide plate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V19/00F21V5/04F21V5/08F21V7/22F21Y101/02
Inventor 陈信宏蔡明吉
Owner CHI MEI CORP
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