Light guide plate and manufacturing method thereof, backlight source and transparent display device
A manufacturing method and technology for a light guide plate, which are applied to lighting devices, fixed lighting devices, components of lighting devices, etc., can solve the problems of large volume of light boxes, inability to produce volume, and heavy weight, etc., and achieve high light transmittance, Light weight, simple structure and lightweight effect
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Embodiment 1
[0038] Such as figure 1 As shown, the light guide plate of this embodiment includes a first transparent substrate 1 and a second transparent substrate 2 oppositely arranged; the first transparent substrate 1 and the second transparent substrate 2 are provided with transparent electrodes on opposite surfaces, And a PSCT layer 3 is arranged between the two transparent substrates.
[0039] The lower surface of the first transparent substrate 1 and the upper surface of the second transparent substrate 2 are provided with transparent electrodes; A voltage difference is generated between the transparent electrodes, so as to achieve the purpose of applying a voltage to the PSCT layer, thereby changing the transmittance of the PSCT layer and realizing light transmission. At the same time, when no voltage is applied to the transparent electrode or the same voltage value is applied to the transparent electrode on the first transparent substrate and the transparent electrode on the seco...
Embodiment 2
[0043] The light guide plate of this embodiment includes a first transparent substrate and a second transparent substrate oppositely arranged; transparent electrodes are provided on the opposite surfaces of the first transparent substrate and the second transparent substrate, and a transparent electrode is arranged between the two transparent substrates. There are PSCT layers. Usually, the PSCT layer includes chiral ionic liquid, liquid crystal and polymerizable monomer; in this embodiment, the liquid crystal is preferably nematic liquid crystal or smectic liquid crystal.
[0044] The selection of nematic liquid crystal or smectic liquid crystal is beneficial to improve light transmittance.
[0045] As a further improvement of this embodiment, the polymerizable monomer is preferably acrylate or epoxy resin. Acrylate or epoxy resin is used to further improve the light transmittance.
Embodiment 3
[0047] The backlight source of this embodiment includes a light source, the light guide plate as described in any one of Embodiment 1 or Embodiment 2, and a driver adapted to the light guide plate.
[0048] The backlight source described in this embodiment adopts the light guide plate of the present invention. Since whether the light guide plate of the present invention exhibits a scattering state and the degree of the scattering state is determined by the voltage applied to the upper and lower layers of the PSCT layer, the present embodiment The backlight source described in the example adopts the light guide plate described in the present invention, and is also equipped with a drive that is compatible with the backlight source described in the present invention;
[0049] The drive can be a simple drive circuit, a drive circuit including a power supply, or an integrated drive circuit including an external power supply access circuit, a transformer, a controller and other circu...
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