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Backlight module and manufacturing method thereof

A backlight module and backlight technology, applied in light guides, optics, optical components, etc., can solve problems such as color cast at the edge of the display screen

Inactive Publication Date: 2017-04-19
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that, under the premise of not improving the light guide plate in the backlight module, just changing the position of the light source of the quantum dot material cannot solve the problem of color cast at the edge of the display screen in the prior art

Method used

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  • Backlight module and manufacturing method thereof
  • Backlight module and manufacturing method thereof
  • Backlight module and manufacturing method thereof

Examples

Experimental program
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Embodiment Construction

[0054] As described in the background of the present invention, the light guide plate of a backlight module in the prior art is because the color of the white point in the central area of ​​the screen is composed of blue light in a small area and red light in a larger area of ​​the quantum film or fluorescent film. Light and green light are mixed, and the red light and green light beyond the blue light area are produced by the excitation of blue light in other areas. For a certain point close to the edge position, the blue light area remains unchanged, while the red light and green light areas beyond the blue light area are reduced by the blue light irradiation received by the quantum film or phosphor film, so the red light and green light components are reduced, thus Caused the problem that the color of the blend point was blue.

[0055] In addition, another backlight module in the prior art encapsulates the quantum dot material in a glass tube as a line light source and plac...

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Abstract

The invention discloses a backlight module. The backlight module comprises a backlight source, a membrane sheet, a reflection sheet, a common site, a special site and a light guiding plate. The backlight source is used for generating emission light in designed color. One side, facing the reflection sheet, of the light guiding plate is divided into a color cast region and a non color cast region. The common site is arranged on the inner side of the non color cast region. The special net comprises fluorescent powder motivated by the emission light to generate complementary color, and is arranged on the outer side of the color cast region so as to allow the light guiding plate of the color cast region to be irradiated by the emission light to generate first motivation light in the same designated color and second motivation light in the same complementary color. According to the invention, by reducing emission quantity of the light in the designated color, the problem of non-uniform colors of a display image of the backlight module of a liquid crystal display device is solved. The invention also discloses a manufacturing method of the backlight module.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module. The invention also relates to a manufacturing method of a backlight module. Background technique [0002] Color gamut is the method of encoding a color and also refers to the sum of colors that a technical system can produce. In a popular sense, the color gamut represents the range of colors that can be expressed by a certain device, that is, the range of colors that can be expressed by various screen display devices, printers or printing devices. [0003] In the current liquid crystal display industry, quantum dot technology can be used to achieve high color gamut display. The application form of quantum dot technology is generally to encapsulate quantum dot materials in the middle of two layers of water and oxygen barrier films, and place them on the top of the diffusion plate or light guide plate. For white light, there is also a solution in the industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/1336G02F1/133609G02F1/133614G02B6/0043G02F2202/36G02B6/0061G02B6/0058G02B6/005G02B6/0055
Inventor 李富琳宋志成刘振国
Owner HISENSE VISUAL TECH CO LTD
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