Light guide plate and backlight module
A technology of backlight module and light guide plate, which is applied in the field of backlight, can solve problems such as uneven luminous chromaticity, spectral absorption of glass light guide plate, difficulty in meeting the processing requirements of thinner and thinner backlight module, and achieve uniform luminous chromaticity and improved The effect of light guide effect
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Embodiment 1
[0021] see figure 1 Embodiment 1 of the present invention provides a backlight module, the backlight module includes a light guide plate 10, a reflection plate 20 located below the light guide plate 10, a diffusion assembly 30 located above the light guide plate 10, and a Blue LED light source 40 . When in use, the light emitted by the blue LED light source 40 passes through the light guide plate 10 and then exits from the upper surface of the light guide plate 10 , and finally exits through the diffusion assembly 30 .
[0022] Specifically, the light guide plate 10 includes a base body 11, and the base body 11 is a glass plate. The substrate 11 has an upper surface 101, a lower surface 102 and a side surface 103, wherein the upper surface 101 and the lower surface 102 are arranged opposite to each other, the side surface 103 is located between the upper surface 101 and the lower surface 102, and the side surface 103 is used as the light incident surface of the substrate 11 ...
Embodiment 2
[0032] see figure 2 The difference between the light guide plate 10 provided in Embodiment 2 of the present invention and the light guide plate 10 in Embodiment 1 is that: a dielectric layer 107 is provided on the upper surface 102 of the substrate 11, and phosphor dots 105 are provided on the upper surface of the dielectric layer 107. The refractive index of the medium layer 107 is smaller than that of the substrate 11 and larger than that of air. In this embodiment, the medium layer 107 is an oil film. Therefore, when the excitation light is emitted from the upper surface 102 of the substrate 11 and the dielectric layer 107 in sequence, it can ensure that the light is emitted from the upper surface of the dielectric layer 107 as much as possible, so that the light is more concentrated.
[0033] Embodiment 2 of the present invention also provides a backlight module with the light guide plate 10 . Other structures in the backlight module are the same as those in Embodiment 1...
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