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Compact ultrathin liquid crystal display backlight module structure and manufacturing method thereof

A backlight module, liquid crystal display technology, applied in the direction of light guide, optics, optical components, etc., to achieve the effect of shortening the production process, reducing the packaging cost, and reducing the manufacturing process

Inactive Publication Date: 2017-01-25
NANJING NUOBANG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects caused by the separation of the reflective sheet and the light guide plate in the existing backlight source, and provide a novel large-size, compact and ultra-thin liquid crystal display (LCD / LED) backlight module structure and its manufacturing process

Method used

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  • Compact ultrathin liquid crystal display backlight module structure and manufacturing method thereof
  • Compact ultrathin liquid crystal display backlight module structure and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Such as figure 2 As shown, the structure of the compact and ultra-thin liquid crystal display (LCD / LED) backlight module of the present invention includes: an optical film set 10 , a light guide plate 20 , a reflection sheet 30 and a protective film 40 .

[0026] The optical film set 10 is used to allow the light to exit uniformly, and is disposed on the light exit surface of the light guide plate 20 . The light guide plate 20 is used to convert point light sources into surface light sources, and has a light emitting surface and a backlight surface opposite to the light emitting surface. The light emitted by the point light source is evenly emitted from the light-emitting surface. The light guide plate 20 of this embodiment is a toughened optical glass light guide plate with a thickness of 0.5-2.0 mm. The traditional acrylic light guide plate (3-5 mm) is replaced by an ultra-thin tempered optical glass plate and a thinner emission sheet is used. On the premise that t...

Embodiment 2

[0033] This embodiment provides a method for manufacturing an integrated structure of a light guide plate and a reflector, including the following steps:

[0034] (1) Peel off one side of the protective film on the 1 mm tempered optical glass with a double-sided protective film in a dust-free environment;

[0035] (2) Scrub the surface of the tempered optical glass with isopropanol to remove the protective film, and use an LED light bar to shine light on the tempered optical glass from the bottom to check for defects such as dirty spots and edge bursts;

[0036] (3) The UV light guide glue is printed on the surface of the 50 micron reflective film coil by screen printing technology according to the designed shading network, which can realize automatic roll-to-roll production;

[0037] (4) Curing the reflective film obtained in step (3) for 22 seconds at a UV wavelength of 390nm and a strength of 462.8mJ / cm2;

[0038] (5) Pass the side of the above-mentioned tempered optical gla...

Embodiment 3

[0040] This embodiment provides a method for manufacturing an integrated structure of a light guide plate and a reflector, including the following steps: (1) Peel off one side of the protective film on the 0.8mm tempered optical glass with double-sided protective film attached in a dust-free environment;

[0041] (2) Scrub the tempered optical glass with isopropanol to remove the protective film, and use an LED light bar to shine light on the tempered optical glass from the bottom to check for defects such as dirty spots and edge bursts;

[0042] (3) Print the UV light guide glue on the side of the tempered optical glass plate where the protective film is removed (as the backlight surface of the light guide plate) using screen printing technology according to the designed shading network;

[0043] (4) Curing the tempered optical glass plate obtained in step (3) for 21 seconds at a UV wavelength of 390nm and a strength of 486.5mJ / cm2;

[0044] (5) The side of the tempered optic...

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Abstract

The invention discloses a compact and ultra-thin liquid crystal display backlight module structure, which includes a light guide and reflection structure, the light guide and reflection structure includes a light guide plate and a reflection sheet, and the reflection sheet is attached to the backlight surface of the light guide plate through light guide glue. Combined to form an integrated structure, the light guide glue is distributed on the printing dots of the light guide plate or reflector, the light guide glue is doped with reflective particles, there is a gap between the light guide plate and the reflector, and the gap is filled with air; thus, in ensuring On the premise that the rigidity of the module is not reduced, the purpose of reducing the thickness of the liquid crystal display is achieved. The invention completes the printing of the light guide adhesive and the lamination of the light guide plate and the emitting sheet in one step, simplifies the manufacturing process of the light guide plate, reduces the loss of raw materials, improves the production efficiency, and saves the production cost.

Description

technical field [0001] The invention relates to the technical field of liquid crystal LCD / LED display, in particular to the structure and manufacturing process of a large-size, compact and ultra-thin LCD / LED backlight module. Background technique [0002] With the continuous development of commercial display, engineering display, education industry, meeting room industry, cultural communication and advertising industry, security industry, digital signage industry, and the improvement of people's living environment, large-size and super-large-size LCD products have become the market's main choice Direction of development. [0003] At present, the thinning of various components of liquid crystal displays has reached the extreme, how to further reduce the thickness has become a bottleneck, and after the components continue to be thinned, their functionality and strength are difficult to guarantee. [0004] The structure of traditional backlight is as figure 1 As shown, the ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0055G02B6/0051G02B6/0065G02F1/133603G02F1/133605G02F1/133606
Inventor 刘兵张奥涵刘勇
Owner NANJING NUOBANG NEW MATERIAL CO LTD
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