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A reflective film for small-size backlight and a small-size backlight module

A technology of backlight module and reflective film, applied in the field of reflective film, can solve the problems of reflective film affecting backlight display, high cost, high requirements, etc., and achieve the effects of reducing uneven brightness, improving reflectivity, and saving costs

Active Publication Date: 2019-02-26
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lightness and thinness of LEDs have high requirements for packaging technology, and their cost is relatively high
The thinning of LGP is close to the limit
There are also some practices in the market, such as directly abandoning the backplane of small-sized backlight modules, but in this way, the reflective film is directly exposed, and the requirements for its stiffness and scratch resistance are also higher, and the exposed reflective film may be scratched Or the lack of stiffness directly affects the display of the backlight

Method used

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  • A reflective film for small-size backlight and a small-size backlight module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The invention provides a reflective film for small size backlight. The reflective film comprises a reflective film substrate and a white ink coating, and the white ink coating is coated on one side of the substrate.

[0055] The thickness of the white ink coating is 5 μm.

[0056] The base material includes a main layer and auxiliary layers arranged on both sides of the main layer; the raw materials of the main layer include 75% PET, 15% polypropylene, and 10% titanium dioxide particles. The raw materials of the auxiliary layer include 94% PET, 2% SiO 2 , 4% ethoxylated alkylamines.

[0057] The base material is an ABA three-layer co-extruded structure, the main layer is a B layer, and the auxiliary layer is an A layer. The thickness ratio of the A layer and the B layer in the ABA three-layer co-extrusion structure is: A:B=10:100. The thickness of the main layer was 50 μm.

[0058] The average particle diameter of the titanium dioxide particles is 0.2 μm.

[0059] ...

Embodiment 2

[0066] The invention provides a reflective film for small size backlight. The reflective film comprises a reflective film substrate and a white ink coating, and the white ink coating is coated on one side of the substrate.

[0067] The thickness of the white ink coating is 15 μm.

[0068] The base material includes a main layer and auxiliary layers arranged on both sides of the main layer; the raw materials of the main layer include 78% PET, 12% polypropylene, and 10% titanium dioxide particles. The raw materials of the auxiliary layer include 93% PET, 2% SiO 2 , 5% ethoxylated alkylamines.

[0069] The base material is an ABA three-layer co-extruded structure, the main layer is a B layer, and the auxiliary layer is an A layer. The thickness ratio of the A layer and the B layer in the ABA three-layer co-extrusion structure is: A:B=10:100. The thickness of the main layer was 150 μm.

[0070] The average particle diameter of the titanium dioxide particles is 0.5 μm.

[0071...

Embodiment 3

[0078] The invention provides a reflective film for small size backlight. The reflective film comprises a reflective film substrate and a white ink coating, and the white ink coating is coated on one side of the substrate.

[0079] The thickness of the white ink coating is 20 μm.

[0080] The base material includes a main layer and auxiliary layers arranged on both sides of the main layer; the raw materials of the main layer include 75% PET, 13% polypropylene, and 12% titanium dioxide particles. The raw materials of the auxiliary layer include 94% PET, 2% SiO 2 , 4% ethoxylated alkylamines.

[0081] The base material is an ABA three-layer co-extruded structure, the main layer is a B layer, and the auxiliary layer is an A layer. The thickness ratio of the A layer and the B layer in the ABA three-layer co-extrusion structure is: A:B=10:100. The thickness of the main layer was 100 μm.

[0082] The average particle diameter of the titanium dioxide particles is 0.5 μm.

[0083...

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Abstract

The invention relates to a reflection film, in particular to a reflection film for a small-size backlight and a small-size backlight module. In order to achieve the goal of lightening and thinning the small-sized backlight, the present invention provides a reflective film for the small-sized backlight. The reflective film includes a reflective film substrate and a white ink coating, and the white ink coating is coated on one side of the substrate. The reflective film has high hardness, good stiffness and high reflectivity.

Description

technical field [0001] The invention relates to a reflection film, in particular to a reflection film for a small-size backlight and a small-size backlight module. Background technique [0002] Small-sized backlight modules are mainly used in smartphones, Pads, car displays, etc., ranging in size from 1.2 inches to 10 inches. These displays use LED LCD backlights. In recent years, with the development of mobile displays, the requirement for thinner and lighter backlights with small sizes has become more and more obvious. Moreover, thinning and thinning has become the main development trend of small-sized LED backlights. At present, the thinning and lightening of small-size backlights in the market mainly depends on the thickness of LEDs and LGPs becoming thinner and thinner. However, the lightness and thinness of LEDs have high requirements for packaging technology, and their cost is relatively high. And the thickness thinning of LGP is close to the limit. There are also...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/08C08L67/02C08L23/12C08K3/22C08K3/36C08K5/17C09D11/101
CPCC08K3/36C08K5/17C08K2201/003C08L67/02C09D11/101G02B5/0841C08L23/12C08K2003/2241
Inventor 金亚东李金标
Owner NINGBO CHANGYANG TECH
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