Light guide plate and back light unit employing the same
A backlight module and light source technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as difficulty in controlling the brightness uniformity of the backlight module 1
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[0040] The present invention proposes a light guide plate, which is applied to the backlight module of a liquid crystal display device, mainly to form a special optical structure design (or a gradient prism structure design) on the light guide plate to improve the overall optical brightness of the backlight module, especially Optical brightness in a small viewing angle range. The following is a detailed description of the present invention with a preferred embodiment, however, this embodiment will not limit the protection scope of the present invention. In addition, unnecessary elements are omitted in the diagrams to clearly show the technical characteristics of the present invention.
[0041] Please refer to FIG. 2A and FIG. 2B , which illustrate a schematic cross-sectional view and a perspective view of a first-type light guide plate according to a preferred embodiment of the present invention. As shown in FIG. 2A , a light guide plate (LGP) 2 includes a first surface 21 an...
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