A light guide plate and its manufacturing method, a backlight module, and a liquid crystal display module

A technology of backlight module and light guide plate, applied in the direction of light guide, optics, optical components, etc., can solve the problems of uneven light chromaticity dispersion, color crosstalk, etc., achieve high color purity, save process equipment, and avoid color crosstalk effects

Active Publication Date: 2019-11-22
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a light guide plate and its manufacturing method, a backlight module, and a liquid crystal display module, so as to avoid the problems of uneven chromaticity dispersion and color crosstalk of the light projected into the space

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  • A light guide plate and its manufacturing method, a backlight module, and a liquid crystal display module
  • A light guide plate and its manufacturing method, a backlight module, and a liquid crystal display module
  • A light guide plate and its manufacturing method, a backlight module, and a liquid crystal display module

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0030] like Image 6 As shown, it is a schematic diagram of the basic principle of the diffraction grating light guide plate. When a beam of collimated monochromatic light passes through a diffraction grating whose period parameter is close to the wavelength of visible light, the light rays passing through different opening positions of the grating converge to different positions in space, due to Different optical paths have different phase differences, so only when the phase difference in a specific direction satisfies integer multiples of the wavelength will there be directional projection of light intensity. Set the polar coordinates of the incident light direction as The polar coordinates of the outgoing light are By setting the duty cycle of the diffraction grating to 0.5, when the material of the light guide plate takes a larger refr...

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Abstract

The invention provides a light guide plate. The light guide plate comprises a light guide plate body, wherein a wave-guiding structure is arranged on the surface of the light guide plate body, a diffraction grating is formed on the wave-guiding structure, a metal wire gating light filter structure is arranged on the diffraction grating and comprises a multilayer medium structure for modulating the refractive index, a metal wire gating layer is arranged on the multilayer medium structure, and grid lines of the metal wire gating layer are in one-to-one correspondence with grid lines of the diffraction grating. A production method of the light guide plate comprises the steps of preparing a diffraction grating mask, the multilayer medium structure and the metal wire gating layer on the light guide plate body with the wave-guiding structure. The invention further provides a backlight module and a liquid crystal display module. Compared with the prior art, the diffraction grating and the metal wire gating layer are mutually matched, so that a high-color-purity, low-dispersion and multi-view three-dimensional display effect can be achieved, and the problems that the color degrees of rays projected into a space are not uniformly scattered and the colors are crossed are solved.

Description

technical field [0001] The invention relates to a liquid crystal display technology, in particular to a naked-eye three-dimensional light guide plate, a manufacturing method, a backlight module, and a liquid crystal display module. Background technique [0002] 3D display technology is the latest and cutting-edge high-tech in the imaging industry. Its appearance has changed the visual fatigue brought to people by traditional flat images. It is also a technological revolution in the field of image production. It is a qualitative change. Unique expression techniques, strong visual impact, good and beautiful environmental appeal, attracting people's attention. The current mainstream 3D display panels mainly include time-domain pixel division or spatial pixel division. The former uses high-frequency time-sharing drive technology, but often requires auxiliary visual equipment, while the spatial pixel division scheme is compatible with traditional 2D display drive technology. By s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00G02B27/22G02F1/13357
CPCG02B6/005G02B6/0065G02F1/133606G02B30/00G02F1/133607
Inventor 查国伟
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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