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A direct-type light guide plate with an arrayed sub-wavelength lens

A light guide plate, sub-wavelength technology, applied in the direction of light guide, optics, optical components, etc., can solve the problems of unfavorable thin design of backlight module, increase the thickness of light guide plate, etc., and achieve the advantages of thin design, high light transmission efficiency and structure. compact effect

Active Publication Date: 2019-10-15
FUZHOU UNIV
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  • Claims
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Problems solved by technology

However, the reflective wall composed of multiple reflective objects in this device increases the thickness of the light guide plate to a certain extent, which is not conducive to the thin design of the backlight module.

Method used

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  • A direct-type light guide plate with an arrayed sub-wavelength lens
  • A direct-type light guide plate with an arrayed sub-wavelength lens
  • A direct-type light guide plate with an arrayed sub-wavelength lens

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0033] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention relates to a direct illumination-type light guide plate with an array sub-wavelength lens; the direct illumination-type light guide plate comprises a light guide plate and a sub-wavelength lens array arranged in the light guide plate; the sub-wavelength lens array comprises more than one sub-wavelength lens unit; each sub-wavelength lens unit is a raster array formed by connecting aplurality of single layer metal rasters; the light guide plate comprises more than one light guide plate unit; each light guide plate unit is defined by the sub-wavelength lens array; the bottom of each light guide plate unit is provided with screen dots, and one corresponding sub-wavelength lens unit is arranged on the top; a LED light source is arranged on the screen dot. The direct illumination-type light guide plate can reduce the mixed spectrum distance, and can reduce the thickness of the device, thus enhancing the light transmission efficiency and luminescence efficiency.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a direct-down light guide plate with an arrayed sub-wavelength lens. Background technique [0002] LED backlights have been widely used in backlight devices for liquid crystal displays. There are two main types of commercialization of LED backlights. (direct backlight) light-emitting components. The main disadvantages of the edge-lit light-emitting element of the LED backlight are that it cannot control the local light, it is difficult to apply to the backlight of any size, and the heat dissipation is poor. The main disadvantage of the direct-type light-emitting element is that it is not easy to be thinned and more LED packages are used. In the direct-type backlight, in order to obtain more uniform light output, a relatively large uniform light distance needs to be reserved between the light source and the optical film, which makes it difficult to further reduce ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0035G02B6/0043G02B6/0065G02B6/0073G02B6/0078G02F1/133603G02F1/133606G02F1/133607
Inventor 郭太良叶芸孙磊徐胜陈恩果郭骞雷霄霄
Owner FUZHOU UNIV
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