Backlight module
A technology of backlight module and light, which is applied in the direction of light guide, optics, optical components, etc., can solve the problems of power consumption and other problems, and achieve the effects of saving power, uniform light, and reducing the number
Active Publication Date: 2018-01-26
中蓝光电科技(上海)股份有限公司
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Problems solved by technology
[0002] The light incident surface of the current light guide plate is generally relatively large, and the area that can be irradiated by a single light source is relatively small. In order to ensure that the brightness distribution of the effective light exit area of the light exit surface of the light guide plate is uniform, multiple light sources must be installed on one side of the light incident surface. Power consumption
Method used
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Embodiment Construction
[0013] see Figure 1-2 , is a backlight module 100 provided by an embodiment of the present invention, which includes a light guide plate 10 and only one light source 20 . In this embodiment, the light source 20 is a light emitting diode (Light emitting diode, LED).
[0014] The light guide plate 10 is made of light-transmitting materials, such as acrylic resin, polycarbonate, polyethylene resin and the like. The light guide plate 10 includes a body 11 and a plurality of protrusions 16 . The main body 11 is in the shape of a pentagonal prism, and includes a light emitting surface 101 , a back surface 102 , a light incident surface 103 , a first side 111 , a second side 112 , a third side 113 and a fourth side 114 . The back surface 102 and the light emitting surface 101 are parallel to each other. The light incident surface 103 , the first side surface 111 , the second side surface 112 , the third side surface 113 and the fourth side surface 114 are vertically connected to ...
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The invention relates to a backlight module comprising a light guide plate and only one light source. The light guide plate includes a body and a plurality of protrusions. The body includes a light-emitting surface, a light-incident surface, a first side surface and a second side surface. The light incident surface and the first and second side surfaces are connected on the same side of the light exit surface. The light incident surface is connected to the first and second side surfaces. The included angles between the light incident surface and the first and second side surfaces are both obtuse angles. The first and second side surfaces reflect the light incident on their surfaces to prevent the light from being emitted from the body. The plurality of protrusions are arranged on the light incident surface at equal intervals, and the light source is arranged facing the plurality of protrusions. The plurality of protrusions scatter the light emitted by the light source and guide the light into the body. The light emitting surface has an effective light emitting area and an edge area surrounding the effective light emitting area. The edge area includes a light expansion area close to the light incident surface and the first side surface. The light entering the body is reflected multiple times in the light expansion area to enter the effective light exit area, so that the light exiting from the effective light exit area is relatively uniform.
Description
technical field [0001] The invention relates to a backlight module, in particular to a backlight module using only one light source. Background technique [0002] The light incident surface of the current light guide plate is generally relatively large, and the area that can be irradiated by a single light source is relatively small. In order to ensure that the brightness distribution of the effective light exit area of the light exit surface of the light guide plate is uniform, multiple light sources must be installed on one side of the light incident surface. Consumes electricity. Contents of the invention [0003] In view of this, it is necessary to provide a backlight module that can evenly distribute the brightness of the effective light emitting area and can effectively save electric energy. [0004] A backlight module includes a light guide plate and only one light source. The light guide plate includes a body and a plurality of protrusions. The main body inclu...
Claims
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IPC IPC(8): G02B6/00
Inventor 廖尉钧
Owner 中蓝光电科技(上海)股份有限公司