Lcd device and optical plate thereof

Abstract

The invention discloses an optical plate comprising a light enhanced layer and a diffused layer, both of which are integrally formed, wherein, the light enhanced layer is provided with an incident face and an emergent face opposite to the incident face; a plurality of V-shaped first bulges which are extended in a bending way are formed on the emergent face of the light enhanced layer; the diffused layer which comprises transparent resin and dispersed particles dispersed in the transparent resin is positioned on the incident face side of the light enhanced layer; and a plurality of second bulges are formed on the outer surface of the transparent resin. Besides, the invention also provides a liquid crystal display unit for the optical plate. The liquid crystal display unit has the advantage that the brightness is high, and the speckle interference is avoided.

Description

technical field [0001] The invention relates to a liquid crystal display device and its optical plate, in particular to a liquid crystal display device with a composite optical plate. Background technique [0002] See figure 1 and figure 2 , shows a conventional direct-type liquid crystal display device 100, which includes a frame 11, on which a plurality of light sources 12, a diffuser plate 13, a prism sheet 10 and a liquid crystal panel 15 are sequentially arranged. Wherein, the diffusion plate 13 generally contains diffusion particles for diffusing light. The light emitting surface 101 of the prism sheet 10 has a plurality of closely adjacent elongated V-shaped first protrusions 102 for converging the outgoing light. During use, after the light produced by a plurality of light sources 12 enters the diffusion plate 13 and is uniformly diffused, it continues to enter the prism sheet 10, and under the action of the elongated V-shaped first protrusion 102 of the prism sh...

AI Technical Summary

Problems solved by technology

However, when light is transmitted in the upper diffuser 14, part of the light will be absorbed by the upper diffuser 14 and lost; and the use of the upper diffuser 14 will also increase the number of interfaces in the transmission process of light, thereby increasing the interface loss of light transmission Therefore, the use of the upper diffusion sheet 14 will reduce the utilization rate of light, and the display brightness of the liquid crystal display device 100 will be reduced.

[0005] In addition, the diffuser plate 13 and the prism sheet 10 are prepared separately, which makes the diffuser plate 13 and the prism sheet 10 independent of each other. During use, although the diffuser plate 13 and the prism sheet 10 can be in close contact, there will still be subtle gaps between the diffuser plate 13 and the prism sheet 10. The air barrier layer exists; when the light propagates between the diffuser plate 13 and the prism sheet 10 and passes through the air barrier layer, the light is prone to interfacial reflection at the interface between the air barrier layer and the diffuser plate 13 and the prism sheet 10. , which increases the consumption and loss of light energy, thereby reducing the utilization rate of light

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