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Diffusion type brightened reflecting film and backlight device

A reflective film and diffused technology, which is applied in the field of diffused brightening reflective films and backlight devices, can solve the problems of not considering the brightness, the brightness of the backlight source is not high, and the diffusion layer is not considered, so that it is not easy to be scratched and reduces Use amount, high brightness effect

Active Publication Date: 2015-02-25
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, various manufacturers have continuously proposed to apply a diffusion layer on the reflective film to improve the diffusion function of the reflective film, but because the coated diffusion layer coating does not consider the brightness problem, the brightness of the backlight using this product is low and other problems.
There are also manufacturers who add inorganic diffusion particles to the surface layer through biaxial stretching process, using three-layer co-extrusion, to achieve the function of light diffusion, but because this design only considers the light diffusion function and reflection function, it can also be carried out without considering the diffusion layer. Brightening design, so that the brightness of the backlight using this product is not high

Method used

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  • Diffusion type brightened reflecting film and backlight device
  • Diffusion type brightened reflecting film and backlight device
  • Diffusion type brightened reflecting film and backlight device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to the material proportions in Table 1 and Table 2, the brightness-enhancing diffusion layer coating liquid and the anti-adhesion layer coating liquid were respectively obtained by stirring. The above coating liquids were respectively coated on both sides of the reflective substrate layer with a thickness of 188 μm and a reflectivity of 98%, and then cured and formed. The number of diffused particles in the coating was controlled to be about 10,000 per square millimeter by metering, and the thicknesses were respectively formed. The 13μm brightness-enhancing diffusion layer, the 3μm-thick anti-adhesion layer, and the reflective substrate layer together form a diffusion-type brightness-enhancing reflection film.

[0036] Table 1 Composition of coating solution for brightening diffusion coating

[0037]

[0038] Table 2 Composition of anti-adhesion layer coating solution

[0039]

Embodiment 2

[0041]Use the same reflective substrate layer and the same anti-bonding layer as in Example 1, and the brightness-enhancing diffusion layer coating solution is formulated according to Table 3, and the number of diffusion particles in the coating is controlled to be about 10,000 per square millimeter by coating metering. , to obtain the diffusion-type brightness-enhancing reflective film of this embodiment. Wherein the brightness enhancing diffusion layer has a thickness of 13 μm.

[0042] Table 3 Composition of coating solution for brightening diffusion layer

[0043] .

Embodiment 3

[0045] Using the same reflective substrate layer and the same anti-bonding coating as in Example 1, the brightness-enhancing diffusion layer coating solution is proportioned according to Table 4, and the number of diffusion particles in the coating is controlled to be 5000 per square millimeter by coating metering. Left and right, the diffusion-type brightness-enhancing reflective film of this embodiment is obtained. Wherein the brightness enhancing diffusion layer has a thickness of 8 μm.

[0046] Table 4 Composition of coating solution for brightening diffusion coating

[0047] .

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Abstract

The invention discloses a diffusion type brightened reflecting film and a backlight device. The diffusion type brightened reflecting film is provided with a reflecting base material layer, a brightened diffusion coating is arranged on one surface of the reflecting base material layer, and the other surface of the reflecting base material layer is provided with a bonding-preventing coating. The brightened diffusion coating includes organic particles with the particle size of 15-25 microns and the mass percent of 80-90 percent and organic particles with the particle size of 0.5-6 microns and the mass percent of 10-20 percent. The thickness of the brightened diffusion coating is 5 / 10-6 / 10 of the maximum diameter of diffusion particles. According to the diffusion type brightened reflecting film and the backlight device, the using of diffusion films can be reduced, the brightness of the backlight device is improved, when the diffusion type brightened reflecting film is applied to an LCD display, the using number of diaphragms can be reduced, and the energy-saving effect is achieved.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a diffusion-type brightness-enhancing reflection film and a backlight device used in a backlight module. Background technique [0002] With the continuous development of liquid crystal display (LCD, Liquid Crystal Display), it has led to the vigorous development of various new technologies. Liquid crystal display products are currently the most popular display technology products. Products, etc., as long as it needs to be displayed, LCD products are the mainstream. [0003] Since the LCD is a passive light-emitting device, the backlight is an indispensable light source supply unit for the LCD. The main components of the backlight include: light source (required), light guide plate or diffuser plate (choose one), reflective film (required), diffuser film (optional), enhancement film (optional), composite film (optional), Prism film (optional), etc. At present, the light s...

Claims

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Application Information

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IPC IPC(8): G02B5/08G02B5/02F21S8/00F21V7/22G02F1/13357
CPCF21S8/00F21V7/22G02B5/0226G02B5/0841G02F1/133605G02F1/133606
Inventor 朱业建王辉许丽丽霍新莉
Owner HEFEI LUCKY SCI & TECH IND
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