Backlight source and liquid crystal display device
A liquid crystal display device and backlight technology, which is applied in the field of backlight, can solve the problems of insufficient brightness and uneven brightness of surface light sources, and achieve the effect of uniform brightness
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[0018] Please see image 3 In the first embodiment of the backlight of the present invention, the backlight 20 includes a plurality of light-emitting diodes 21 and a light guide plate 22, a plurality of microlenses 23 are arranged between the light-emitting diodes 21 and the light guide plate 22, and the plurality of The light emitting diode 21 and the light guide plate 22 are respectively positioned within the working distance on the left and right sides of the plurality of microlenses 23 (detailed later), so that the microlens 23 couples the divergent light emitted by the plurality of light emitting diodes 21 into uniform parallel light It is incident into the light guide plate 22.
[0019] The light guide plate 22 is roughly a rectangular parallelepiped flat body, which includes a light incident surface 221 adjacent to the microlens 23, a light exit surface 222 perpendicular to the incident surface 221, a bottom surface 223, a first side surface (not shown), and a A second side...
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