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Brightening film

A brightness-enhancing film and microstructure technology, applied in the direction of diffusion elements, prisms, etc., can solve the problems of difficult processing of structural wheels

Inactive Publication Date: 2012-02-29
KANGDE XIN COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, large-area brightness-enhancing films are produced by film transfer printing with structural wheels complementary to the microstructure of the brightness-enhancing film, and the structural wheels are processed by rolling cutting, while the complementary structural wheels of the structure described in this US patent Due to the microstructure in at least two directions, it is difficult to process the structure wheel corresponding to this structure brightness enhancement film

Method used

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Embodiment 1

[0033] figure 1 It is the first embodiment of the present invention. Such as figure 1 As shown, polyethylene terephthalate is first selected as the substrate 100 . One surface of the substrate is the first optical surface 101 , and the opposite surface is the second optical surface 102 . On the first optical surface 101 of the substrate, a layer of polyethylene ultraviolet curable resin is coated, and the ultraviolet curable resin is pressed with a mold wheel, and irradiated with ultraviolet light to cure it, and the first optical surface arranged on the substrate 100 is obtained. The microstructure layer 200 on the surface 101.

[0034] The microstructure layer 200 produced by the above lamination includes primary microstructures 202 and secondary microstructures 204 .

[0035] Such as figure 2 As shown in the schematic diagram of the main microstructure, the main microstructure 202 is composed of a plurality of main microstructure units 206 extending along the first di...

Embodiment 2

[0040] Figure 7A and Figure 7B It is a schematic diagram of the second embodiment of the present invention. Such as Figure 7A Brightness enhancing film 20 shown with figure 1 Brightness enhancing film 10 is shown similarly, additionally as Figure 7B As shown in the schematic cross-sectional view of the second embodiment of the brightness-enhancing film along the second direction, their difference is that the main microstructure is an isosceles triangle with a radius of 2um rounded corners on the cross-section perpendicular to the first direction. Due to the arc-shaped facets of the microstructure prism, it can play an anti-scratch role during the assembly of the brightness enhancement film, so as to improve the product assembly yield.

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Abstract

The invention relates to a brightening film, which comprises a substrate and a microstructural layer, wherein the substrate is provided with a first optical surface and a second optical surface; the second optical surface is positioned on the back surface of the first optical surface; the microstructural layer is arranged on the first optical surface and comprises a master microstructure and a slave microstructure; the master microstructure comprises a plurality of master microstructural units; the slave microstructure comprises a plurality of slave microstructural units; and the master microstructural units and the slave microstructural units extend along a first direction and are arranged alternately along a second direction. The brightening film is easy to prepare, and can enhance the luminance of light sources and adjust the convergent angle of light beams.

Description

technical field [0001] The invention relates to a brightness-enhancing film, in particular to a brightness-enhancing film capable of enhancing the brightness of a light source and adjusting the converging angle of light beams. Background technique [0002] At present, the brightness enhancement film is widely used in the light emitting module to concentrate the light emitted by the light source. Especially in display devices such as monitors, brightness-enhancing films are often used to increase display brightness and save energy for display battery devices. The principle of the brightness enhancement film is to adjust the light emitted outside the observer's viewing angle to within the observer's viewing angle through reflection, thus improving the utilization rate of the light energy emitted by the light source. [0003] Ordinary Brightness Enhancement Film (BEF) is composed of many prisms for converging light, and these prisms are arranged in one direction to form a pris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/04G02B5/02
Inventor 钟玉
Owner KANGDE XIN COMPOSITE MATERIAL CO LTD
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