A kind of multi-layer composite prism sheet and preparation method thereof

A multi-layer composite, prism sheet technology, applied in prisms, chemical instruments and methods, lamination, etc., can solve the problems of film damage, lowering of the qualification rate of the backlight module, and dust mixed in the film, achieving easy operation, reducing Processes such as cutting, cleaning and assembly, and the effect of high yield

Active Publication Date: 2015-12-09
NINGBO JIANGBEI EXCITON NEW MATERIAL TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defect that the diaphragms of the existing backlight module move and rub against each other, causing damage to the diaphragm, or the dust and debris generated by cutting are mixed between the diaphragms, which reduces the qualified rate of the backlight module, and reduce Interference phenomenon of prism sheet

Method used

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  • A kind of multi-layer composite prism sheet and preparation method thereof
  • A kind of multi-layer composite prism sheet and preparation method thereof
  • A kind of multi-layer composite prism sheet and preparation method thereof

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preparation example Construction

[0029] The preparation method of the multilayer composite prism sheet provided by the invention comprises the following steps:

[0030] (1) Prepare the lower prism sheet and the upper prism sheet;

[0031] (2) Coat a layer of adhesive on the lower surface of the prism sheet substrate of the upper prism sheet, and age in an oven for 1-30 minutes to form an adhesive layer; then compound the lower prism sheet with a composite roller to make the upper prism sheet substrate The lower surface of the prism is combined with the microprism structure of the lower prism sheet through the adhesive layer; the finished product is rolled and aged in a 50°C drying room for 3-40h.

[0032] The upper prism sheet and the lower prism sheet in the above step (1) 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 tes...

Embodiment 1

[0036] Materials: The upper prism sheet and the lower prism sheet are SOS prism sheets produced by Korea LG Electronics Company.

[0037] The preparation method is as follows: the polyurethane adhesive is coated on the lower surface of the upper prism sheet to form an adhesive layer with a thickness of 2 μm, the height of the microprism structure of the lower prism sheet is 15 μm, and the adhesive layer and the lower prism sheet The upper surface (microprism structure layer) is compounded to obtain the multilayer composite prism sheet of the present invention.

Embodiment 2

[0039] Material: The lower prism sheet is a prism sheet of model KL77 produced by Taiwan Guangyao Co., Ltd.

[0040] The upper prism sheet is a SOS prism sheet produced by Korea LG Electronics Company.

[0041] The preparation method is as follows: a layer of polyurethane adhesive is coated on the lower surface of the upper prism sheet to form a 6 μm thick adhesive layer, the height of the microprism structure of the lower prism sheet is 25 μm, and the adhesive layer and the lower prism sheet The upper surface (microprism structure layer) is compounded to obtain the multilayer 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 prism lens used for a backlight module and a preparation method thereof, aiming at overcoming the defect of film damage caused by mutual movement and friction among all films of the existing backlight module or decreasing of the qualification rate of the backlight module caused by dust entering among the films and scrap resulting from cutting, and relieving an interference phenomenon of a prism lens. The invention provides the multilayer compound prism lens and the preparation method thereof. The compound prism lens comprises a lower prism lens, an adhesive layer and an upper prism lens, wherein the upper prism lens and the lower prism lens comprise a prism lens base material respectively; a microprism structure is arranged on each prism lens base material; the upper prism lens and the lower prism lens are compounded together through the adhesive layer; and moreover, the directions of the upper prism lens and the lower prism lens are perpendicular to each other. The multilayer compound prism lens provided by the invention has an excellent optical effect; meanwhile, the yield of the backlight module can be improved and the procedures of assembling and cleaning can be omitted; and the preparation method of the multilayer compound prism lens is simple in technology 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 and a preparation method thereof. Background technique [0002] Since the liquid crystal display itself cannot emit light, the backlight module, as one of the key components of the liquid crystal display, plays the role of providing a uniform surface light source. The backlight module is composed of a light source, a reflector, a light guide plate, a lower diffusion film, a prism sheet, and an upper diffusion film. The light source emits a line light source, which becomes a surface light source through the reflector, light guide plate, and lower diffusion film, and then further concentrates the light through the prism sheet to increase the brightness. The function of the upper diffusion film is mainly to protect the prism sheet and improve the viewing angle. [0003] A single prism sheet can increase the bright...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/04B32B7/12B32B37/12
Inventor 张彦崔钧徐良霞马子盈
Owner NINGBO JIANGBEI EXCITON NEW MATERIAL TECH CO LTD
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