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Light guide plate and backlight module group employing same

A technology of backlight module and light guide plate, which is applied in the direction of light guides, optics, optical components, etc., can solve problems such as difficult to control the crosstalk of optical paths in different partitions, and achieve the effects of reducing crosstalk of optical paths, reducing crosstalk of optical paths, and improving convergence characteristics

Active Publication Date: 2017-08-29
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the small-sized 1D Local Dimming technology is often difficult to control the crosstalk of optical paths in different partitions

Method used

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  • Light guide plate and backlight module group employing same
  • Light guide plate and backlight module group employing same
  • Light guide plate and backlight module group employing same

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0020] see figure 1 , figure 1 It is an embodiment of the light guide plate 11 of the present invention, including a light incident surface 12, a transmission layer 13, and a light exit surface 14; perpendicular to the light-emitting surface 14; the light-emitting surface 14 is provided with a periodic microstructure 16;

[0021] The microstructures 16 are divided according to bright or dark areas on the surface of the light guide plate 11, each of the bright or dark areas corresponds to a period of the microstructures 16;

[0022] The optical waveguide layer 15 includes a plurality of transparent medium layers 21, please refer to figure 2 ; The refractive index of the transparent medium layer 21 increases in the direction of propagation of the light; the material of the t...

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Abstract

The invention discloses a light guide plate and a backlight module group employing the same. The light guide plate comprises a light incoming surface, a transmission layer, and a light outgoing surface. The transmission layer is provided with an optical wave conducting layer which enables the propagation direction of at least a part of light entering from the light incoming surface to be perpendicular to the light outgoing surface. The light outgoing surface is provided with a periodic microstructure. Through the above mode, the light guide plate can improve the convergence characteristic of light entering the light guide plate, reduces the crosstalk of optical paths of all sections, and achieves the superthin small-crosstalk display of 1D segmentation effect.

Description

technical field [0001] The invention relates to the field of backlight modules of liquid crystal displays, in particular to a light guide plate and a backlight module using the light guide plate. Background technique [0002] High-Dynamic Light Rendering (High-Dynamic Range, HDR) images can provide more dynamic range and image details than ordinary images. According to LDR (Low-Dynamic Range) images with different exposure times, each exposure The LDR image with the best details corresponding to the time is used to synthesize the final HDR image, which can better reflect the visual effect in the real environment. [0003] The local dimming technology plays an important role in the realization of sensors required to synthesize high dynamic range ("HDR") images on mobile terminals. Local Dimming technology is local backlight adjustment technology, which is adjusted according to the light and shade of the image: the brightness of the highlighted part of the display screen imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0011G02B6/0038G02F1/133615
Inventor 程艳
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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