Backlight module of light emitting diode with non-equidistance arrangement
A technology of light-emitting diodes and backlight modules, applied to semiconductor devices of light-emitting elements, light guides and optics of lighting systems, etc., can solve problems such as uneven brightness and difficulty in making light guide plate dots
Inactive Publication Date: 2013-01-23
CHI LIN OPTOELECTRONICS CO LTD
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Problems solved by technology
[0007] Therefore, it is necessary to provide an innovative and progressive backlight module with non-equidistantly arranged light-emitting diodes to solve the problems of difficulty in making dots on the light guide plate and uneven brightness.
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[0060] refer to Figure 5 , shows a schematic top view of a preferred embodiment of the backlight module of the present invention. refer to Figure 9 , showing a schematic cross-sectional view of the first embodiment of the light guide plate in the present invention, wherein Figure 9 yes Figure 5The enlarged schematic diagram of the partial section along the line C-D in the middle. The backlight module 2 includes a light guide plate 21 and a plurality of LEDs 23 . The light guide plate 21 has a light incident surface 211 , a light exit surface 212 and a bottom surface 213 , the light exit surface 212 is opposite to the bottom surface 213 , and the light incident surface 211 is disposed between the light exit surface 212 and the bottom surface 213 . The light guide plate 21 has a plurality of mesh points 22 , wherein the mesh points 22 can be disposed on the bottom surface 213 or the light-emitting surface 212 , or the bottom surface 213 and the light-emitting surface 212...
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The invention discloses a backlight module of a light emitting diode with non-equidistance arrangement. The backlight module comprises a light guide plate and a plurality of light emitting diodes; the light emitting diodes are positioned on a substrate; the substrate is sequentially defined as a first distribution region, a second distribution region, a third distribution region, a fourth distribution region and a fifth distribution region, wherein the distribution density of the light emitting diodes positioned in the first distribution region and the third distribution region is greater than the distribution density of the light emitting diodes positioned in the second distribution region; and the distribution density of the light emitting diodes positioned in the first distribution region and the fifth distribution region is greater than the distribution density of the light emitting diodes positioned in the fourth distribution region. Thus the light guide plate has higher brightness and more uniform brightness distribution.
Description
technical field [0001] The invention relates to a backlight module, in particular to a backlight module with non-equidistantly arranged light emitting diodes. Background technique [0002] refer to figure 1 , showing a schematic top view of an existing edge-lit backlight module. The backlight module 1 includes a light guide plate 11 and a plurality of LEDs 13 . The light guide plate 11 has a light incident surface 111 , a light exit surface 112 and a bottom surface, and the bottom surface and / or the light exit surface 112 has a plurality of dots 12 . The LEDs 13 are located on a substrate 14 , and the LEDs 13 face the light incident surface 111 of the light guide plate 11 . [0003] refer to figure 2 , showing a schematic diagram of a distribution curve of dots on a light guide plate in an existing edge-lit backlight module. In the backlight module 1, in the direction parallel to the light-incident surface 111 of the light guide plate 11 (direction A to B), the density...
Claims
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IPC IPC(8): F21S8/00F21V8/00F21V19/00F21Y101/02F21Y105/16F21Y115/10
Inventor 王子昌杜珮姗
Owner CHI LIN OPTOELECTRONICS CO LTD