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Multilayer compound prismatic lens

A multi-layer composite and prism sheet technology, applied in the direction of prism, lamination, lamination device, etc., can solve the problems of lower pass rate of backlight module yield, film damage, dust mixed, etc., to improve the cutting yield , easy to operate, high yield effect

Inactive Publication Date: 2013-05-08
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the backlight assembly, the diaphragms will move and rub against each other, causing damage to the diaphragm. At the same time, dust and cutting debris may be mixed between the films, which will reduce the yield of the backlight module (or called pass rate) reduced

Method used

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preparation example Construction

[0028] The preparation method of the multilayer composite prism sheet provided by the invention comprises the following steps:

[0029] (1) Preparation of prism sheet;

[0030] (2) Preparation of diffusion membrane;

[0031] (3) Coat a layer of adhesive on the lower surface of the prism sheet substrate of the prism sheet, and age in an oven for 1-30 minutes to form an adhesive layer; The adhesive layer and the diffusion layer of the diffusion film are combined together; the finished product is rolled up and aged in a drying room at 50°C for 3-40 hours.

[0032] The prism sheet and diffusion film in the above steps (1) and (2) can be ready-made products purchased from the market, or can be prepared according to the existing technology.

[0033] Test the brightness of gained multilayer composite prism sheet according to following method:

[0034] Brightness test: Put the film to be tested into a 24-inch backlight module, light up the module with a 24V voltage, and test the br...

Embodiment 1

[0036] Material: The model of the lower diffusion film is BS507, produced by Japan Megumi Co., Ltd.,

[0037] The model of the prism sheet is SOS, which is produced by South Korean LG Electronics.

[0038] The preparation method is as follows:

[0039] The polyurethane adhesive is coated on the lower surface of the prism sheet SOS to form an adhesive layer with a thickness of 3 μm (the maximum particle size of BS507 diffusion particles is about 20 μm), and the adhesive layer is then combined with the upper surface of the diffusion film BS507 (diffusion glue) layer) composite to obtain the multilayer composite prism sheet of the present invention.

Embodiment 2

[0041] Material: The model of the lower diffusion film is BS507, produced by Japan Megumi Co., Ltd.,

[0042] The model of the prism sheet is SOS, which is produced by South Korean LG Electronics.

[0043] The preparation method is as follows: a layer of polyurethane adhesive is coated on the lower surface of the prism sheet SOS to form a 6 μm thick adhesive layer (the maximum particle size of BS507 diffusion particles is about 20 μm), and the adhesive layer is then combined with the upper surface of the diffusion film BS507 (diffusion glue layer) compound, obtain the multi-layer composite prism sheet of the present invention.

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Abstract

The invention relates to the technical field of optical thin films, in particular to a multilayer compound prismatic lens. In order to solve the problem that damages of mebrane caused by mutual removal and friction between existing backlight module mebrane or dust and scrap created by cutting are mixed between the membrane, so backlight module pass percent is reduced, the multilayer compound prismatic lens is provided. The prismatic lens comprises a diffusion film, an adhesive layer and a prismatic lens. The prismatic lens comprises a prismatic lens substrate. The prismatic lens substrate is provided with a microprism structure. The diffusion film comprises a diffusion film substrate. The diffusion film substrate is coated with a diffusion adhesive layer. The diffusion adhesive layer comprises diffusion particles and an adhesive. The prismatic lens substrate is composited with the diffusion adhesive layer of the diffusion film through the adhesive layer. The prismatic lens has good optical effects, improves backlight module pass percent and reduces procedures of assembling and cleaning. The multilayer compound prismatic lens is simple in prepared method process and easy to operate.

Description

technical field [0001] The invention relates to the technical field of optical films, in particular to a multilayer composite prism sheet used in a backlight module. Background technique [0002] In a series of liquid crystal display devices such as TVs, mobile phones, notebook computers, and navigators, the backlight module plays the role of providing a uniform surface light source. Such as figure 1 As shown, the backlight module sequentially includes a light source 101 , a reflection sheet 102 , a light guide plate 103 , a lower diffusion film 104 , a prism sheet 105 and an upper diffusion film 106 . Among them, the lower diffusion film mainly has the function of diffusing light, which can make the light source become a uniform front light source, while the prism sheet can further concentrate the light and improve the brightness, and the main function of the upper diffusion film is to protect the prism and improve the viewing angle . It is the mutual cooperation of thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/04B32B7/12B32B37/12B32B27/06
Inventor 张彦崔钧马子盈
Owner NINGBO EXCITON TECH
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