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Brightness enhancement film having blue light resistance effect and manufacturing method thereof

A manufacturing method and anti-blue light technology, applied in the directions of optics, optical components, instruments, etc., can solve the problems of eye damage, no anti-blue light function, etc., and achieve the effect of simple and easy manufacturing method.

Inactive Publication Date: 2015-10-21
NALI OPTICAL MATERIAL DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional brightness enhancement film is generally placed in the screen, and has no anti-blue light function, which directly allows short-wavelength blue light to penetrate the brightness enhancement film and directly reach the eyes of the observer, causing direct damage to the eyes

Method used

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  • Brightness enhancement film having blue light resistance effect and manufacturing method thereof
  • Brightness enhancement film having blue light resistance effect and manufacturing method thereof
  • Brightness enhancement film having blue light resistance effect and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment approach 1

[0048] like figure 1 As shown, the backlight module includes a backlight 10, a reflective film 11, a light guide plate 12, and an optical film group 13. There is an optical film group 13; wherein the optical film group 13 includes a lower diffusion film 130, a lower brightness enhancement film 131, an upper brightness enhancement film 132 and an upper diffusion film 133 arranged in sequence from bottom to top. The length directions of the prism monomers of the lower brightness enhancement film 131 and the upper brightness enhancement film 132 are perpendicular to each other.

[0049] The brightness enhancement film with anti-blue light effect provided by this embodiment includes: a substrate 21 , a prism structure layer 22 and an anti-blue light layer 20 . The substrate 21 includes a first optical surface and a second optical surface; the prism structure layer 22 is arranged on the first optical surface, and the anti-blue light layer 20 is arranged on the second optical surfa...

Embodiment approach 2

[0068] like Figure 7 As shown, the brightness enhancement film (the lower brightness enhancement film 131 and the upper brightness enhancement film 132 ) provided in this embodiment includes: a substrate 21 , a prism structure layer 22 and an anti-blue light layer 20 . The substrate 21 comprises a first optical surface and a second optical surface; the prism structure layer 22 and the anti-blue light layer 20 are arranged on the second optical surface; A prism structure layer 22 is provided thereon. The prism structure layer 22 is composed of a plurality of prism monomers, and all the prism monomers are arranged horizontally with each other along the length direction thereof.

[0069] The thickness d0 of the substrate 21 is 38 μm, the thickness d2 of the prism structure layer 22 is 13 μm, and the thickness d1 of the anti-blue light layer 20 is 4 μm. The cross-section of the prism monomer in the prism structure layer 22 is an isosceles triangle, the apex angle α of the isosc...

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Abstract

The invention discloses a brightness enhancement film having a blue light resistance effect and a manufacturing method thereof. The brightness enhancement film provides a brightness enhancement effect, and, at the same time, the brightness enhancement film can obstruct and absorb short-wavelength blue light and reduce damage of blue light, which is emitted by a backlight module, on user's eyes. On a transparent substrate material, a blue light resistance layer is coated and formed on a substrate surface in a micro concave roller coating manner; then coating is performed on the substrate surface to form a prism structure layer, or coating is performed on a surface of the blue light resistance layer to form a prism structure layer; and the prism structure layer firstly performing the coating and gluing adopting a three-roller type coating system, and then the prism structure layer is formed by pattern roller transfer printing of a structure molding system and via UV light source curing. The brightness enhancement film provides an axial brightness gain, and, at the same time, the brightness enhancement film can effectively absorb the short-wavelength blue light emitted by a backlight source and reduce the damage of the liquid crystal display short-wavelength blue light on the user's eyes.

Description

technical field [0001] The present invention relates to an optical protection film, in particular to a brightness enhancing film with anti-blue light effect. Background technique [0002] Liquid crystal displays have the advantages of low energy consumption, light weight, no radiation, and no flicker. They are currently the mainstream displays on the market. However, as a passive luminescent material, liquid crystal displays need to rely on backlight modules to display images. Generally speaking, The backlight module consists of a light source, a reflective film, a light guide plate, and an optical module. The optical module includes a lower diffusion film, a lower brightness enhancement film, an upper brightness enhancement film, and an upper diffusion film; the diffusion film can convert point light sources or line light sources into Form a uniform surface light source, and the brightness enhancement film can concentrate the originally divergent light to the axial directio...

Claims

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Application Information

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IPC IPC(8): G02B5/04
CPCG02B5/045
Inventor 朱文峰
Owner NALI OPTICAL MATERIAL DONGGUAN
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