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Brightness-enhancing film with pyramid structure and manufacturing method thereof

A technology of pyramid structure and manufacturing method, which is applied in optics, instruments, optical components, etc., can solve the problems of unfavorable thinning of optical modules, increasing the thickness of optical film groups, and difficulty in luminance gain, so as to improve display uniformity and optical components. Gain effect, ensure controllability and uniformity, low cost effect

Active Publication Date: 2017-05-24
SHENZHEN MOTHER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the prism structure layer of the brightness enhancement film tends to be single, it is difficult for a brightness enhancement film to achieve luminance gain in all directions in space. More than one brightness-enhancing film, which not only increases the thickness of the optical film group, is not conducive to the thinning of the optical module, but also greatly increases the cost

Method used

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  • Brightness-enhancing film with pyramid structure and manufacturing method thereof
  • Brightness-enhancing film with pyramid structure and manufacturing method thereof
  • Brightness-enhancing film with pyramid structure and manufacturing method thereof

Examples

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Embodiment 1

[0037] Such as Figure 1-10 Shown is the first embodiment of a brightness enhancing film with a pyramid structure according to the present invention, which includes a transparent substrate 40 and a pyramid structure layer 41, the transparent substrate 40 includes a first optical surface and a second optical surface, and the second optical surface The pyramid structure layer 41 is disposed on the first optical surface, and the pyramid structure layer 41 is composed of several uniformly distributed pyramid monomers 411 .

[0038] The brightness-enhancing film of the present invention can simultaneously realize spatial multi-directional optical gain effects by being provided with a pyramid structure layer with a pyramid structure, and maximize the display uniformity and optical gain effect of the backlight module on the basis of a single brightness-enhancing film.

[0039] The brightness-enhancing film of the invention can replace multiple brightness-enhancing films in the backli...

Embodiment 2

[0066] Such as Figure 11 Shown is the second embodiment of a brightness-enhancing film with a pyramid structure according to the present invention. The difference from the first embodiment is that the bottom surface of the pyramid monomer 411 is a regular polygon, and the cross-section of the pyramid monomer 411 is It is an isosceles triangle, and the apex angle α of the isosceles triangle is 85°.

[0067] The base side length d2 of the pyramid monomer 411 is 24 μm, and the height d1 of the pyramid monomer 411 is 12 μm.

[0068] The transparent substrate 40 is a PET film, a PMMA film or a PC film, and its thickness d0 is 30 μm.

[0069] The apex angles of the pyramid monomers 411 are arc-shaped, and the arc radius of the arc-shaped apex angles is 5 μm. The arc-shaped setting of the vertex makes the present invention more wear-resistant during use, and at the same time can make the display brightness more moderate.

[0070] In the step B, when the glue is high refractive in...

Embodiment 3

[0073] Such as Figure 12 Shown is a third embodiment of a brightness enhancing film with a pyramid structure according to the present invention. The difference from the first embodiment is that the bottom surface of the pyramid monomer 411 is a regular polygon, and the cross-section of the pyramid monomer 411 is It is an isosceles triangle, and the apex angle α of the isosceles triangle is 95°.

[0074] The base side length d2 of the pyramid monomer 411 is 50 μm, and the height d1 of the pyramid monomer 411 is 25 μm.

[0075] The transparent substrate 40 is a PET film, a PMMA film or a PC film, and its thickness d0 is 150 μm.

[0076] The top surface of the pyramid monomer 411 is planar, the top surface is a regular polygon plane parallel to the bottom surface of the pyramid monomer 411, and the side length of the regular polygon plane is 5 μm. The arrangement of the top surface in a planar shape makes the present invention more wear-resistant during use, and at the same ti...

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Abstract

The invention relates to a birghtness enhancement film used in a liquid crystal display backlight module, and in particular relates to a birghtness enhancement film with a pyramid structure and a manufacture method thereof; the birghtness enhancement film comprises a transparent base material and a pyramid structure layer, the transparent base material comprises a first optical surface and a second optical surface, the second optical surface is located at the back of the first optical surface, and the pyramid structure layer is composed of a plurality of pyramid monomers evenly distributed. The birghtness enhancement film is provided with the pyramid structure layer having pyramid structure for realizing space multi-direction optical gain effect, the display uniformity and optical gain effect of the backlight module can be greatly improved based on the simple piece of birghtness enhancement film. The manufacture method comprises the unreeling step, coating step and forming step. The specific temperature setting operation can effectively guarantee the controllability and uniformity of the thickness of the coating, the process is simple and the cost is low.

Description

technical field [0001] The invention relates to a brightness enhancement film in a liquid crystal display backlight module, in particular to a brightness enhancement film with a pyramid structure and a manufacturing method thereof. 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 is composed 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 light guide plate and diffusion film can convert point light sources or The linear light source is converted into a uniform surface light ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/04
CPCG02B5/045
Inventor 陈克勇
Owner SHENZHEN MOTHER TECH CO LTD