Backlight module unit
A backlight module and light source technology, which is applied in the field of backlight lighting, can solve the problems of heavy weight, inflexibility, and complicated processing and production procedures of the light guide plate, and achieve the effect of uniform light output
Inactive Publication Date: 2013-05-22
苏州拓显光电材料有限公司
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Problems solved by technology
The light guide plate is an important part of this type of backlight with heavy weight and high cost. The processing and manufacturing procedures are complicated and inflexible
Due to the high refractive index of the light guide plate, when using LED as the light source, it is easy to appear bright spots or firefly phenomena in the area close to the LED, resulting in a decrease in uniformity
Insufficient light mixing is often a major disadvantage of side-mounted backlights
Method used
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0029] Please refer to figure 1 Shown is the first preferred embodiment of the backlight module of the present invention, the backlight module 100 includes an illumination device 1 , a reflective member 2 and a light-transmissive member 3 .
[0030] The illuminating device 1 includes a reflector 11 and a light source 12 , the reflector 11 is concave, and the light source 12 is located in the middle of the concave reflector 11 .
[0031] The reflective member 2 is arranged relatively parallel to the transparent member 3 , and the illuminating device 1 is arranged laterally at a side edge position between the reflective member 2 and the transparent member 3 . A hollow optical cavity is formed among the illuminating device 1 , the reflective member ...
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The invention discloses a backlight module unit. The backlight module unit comprises at least an irradiation unit, a reflection element and a light pervious element. The reflection element and the light pervious element are oppositely arranged. The irradiation unit is arranged on a side edge position between the reflection element and the light pervious element in a side direction. The light pervious element comprises a diffuser plate and a reflector plate which is arranged on the diffuser plate and close to one side of the reflection element. A plurality of through holes with different sizes and for light through are formed in the reflector plate. Compared with the prior art, due to the fact that the reflector plate is arranged on the diffuser plate, and the through holes with different sizes are formed in the reflector plate to prevent the phenomenon that bright spots or fireflies occur in areas close to the irradiation unit, and therefore the backlight module unit radiates light evenly.
Description
technical field [0001] The invention relates to the field of backlight illumination, in particular to a side-mounted backlight module with a light source located on a side edge. Background technique [0002] Backlight is widely used in liquid crystal display (LCD), advertising light boxes, indoor and outdoor lighting and other fields. According to the position of the light source, the backlight can be divided into two types: direct type and side type. [0003] Direct-lit backlight, also known as direct-lit backlight, refers to placing the light source under the liquid crystal panel, diffusion member or light box cloth for direct lighting. The light is emitted from the light source, such as fluorescent tubes, light-emitting diodes (LEDs), etc., reflected by the reflector, and then emitted from the front through the diffusion member upwards, illuminating the target in the form of a surface light source. Because the light source has a large space for placement, a large number...
Claims
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IPC IPC(8): F21S8/00F21V7/22F21V5/08
Inventor 张建林张黎明
Owner 苏州拓显光电材料有限公司