WO2015085822A1

WO2015085822A1 - Coated non-woven diffuser sheet

Info

Publication number: WO2015085822A1
Application number: PCT/CN2014/088458
Authority: WO
Inventors: 任杰
Original assignee: 苏州艾尔迪电子有限公司
Priority date: 2013-12-13
Filing date: 2014-10-13
Publication date: 2015-06-18
Also published as: CN203720389U

Abstract

A coated non-woven diffuser sheet, comprising: a surface optical coating (1) and a non-woven substrate (2); the surface optical coating (1) is uniformly applied to the surface of the non-woven substrate (2) or penetrates by means of the surface to the interior of the non-woven substrate (2); the surface optical coating (1) is a vinyl acetate coating, an acrylic coating, or an optically clear adhesive (OCA) coating. By the described means, a coated non-woven diffuser sheet is provided which diffuses light very uniformly, has small light intensity loss, and can be widely applied in the fields of display backlights, lighting and illumination, and billboard light boxes; the invention is lightweight, convenient to install, and cost-effective.

Description

Non-woven diffuser with coating

Technical field

The utility model relates to the field of light diffusion sheets, in particular to a non-woven fabric diffusion sheet with a coating.

Background technique

The main function of the backlight of the liquid crystal display device is to provide a uniform, stable planar light source with a certain brightness. The core light source of the internal light source is usually a light-emitting diode (LED), and the uneven light source emitted by the LED is converted into a uniform surface light source through the light guide plate and the diffusion sheet.

As a main component, the diffusion sheet plays a significant role in the backlight. At present, most liquid crystal display devices use a diffusion sheet made of optical grade transparent polyester film (PET). In order to optimize the optical properties of the diffuser, some surface treatment is generally performed on the surface of the transparent polyester film diffusion sheet. The most common way is to apply some optical coating to optimize the optical properties, but the transparent polyester film diffusion sheet The process is complicated and costly, and the overall thickness of the liquid crystal display device using the transparent polyester film diffusion sheet is not further controlled.

In addition, the materials used for uniform light in lighting fixtures (table lamps, ceiling lamps, outdoor lighting, etc.) are mostly atomized glass (frosted glass) or frosted acrylic cover. The raw materials used in advertising light box cloth are mostly plexiglass swatches or pvc boards. The volume is heavy, the cost is high, the installation and replacement cost is large, the safety is not high, and the optical performance is poor.

Utility model content

The technical problem mainly solved by the utility model is to provide a non-woven fabric diffusion sheet with a coating, which is light in weight, good in light diffusion uniformity, low in cost and low in light intensity loss.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a coated nonwoven fabric diffusion sheet, comprising: a surface optical coating layer and a non-woven fabric substrate, and the surface optical coating is uniformly coated. The cloth is infiltrated into the interior of the nonwoven fabric substrate by a surface of the nonwoven fabric substrate, and the surface optical coating is a vinyl acetate coating, an acrylic coating or an OCA optical adhesive coating.

In a preferred embodiment of the invention, the surface optical coating is applied to one or both sides of the nonwoven substrate.

In a preferred embodiment of the present invention, the nonwoven fabric substrate is a single synthetic fiber or a nonwoven fabric made by mixing a plurality of fibers.

In a preferred embodiment of the present invention, the nonwoven fabric has a thickness of 0.05 mm to 1 mm.

In a preferred embodiment of the present invention, the surface optical coating has a thickness of 0.001 mm to 0.5 mm.

The utility model has the beneficial effects that the coated non-woven fabric diffusion sheet has good uniformity of light diffusion and small light intensity loss, and can be widely applied to display backlights and lighting, In the field of billboard light boxes, the quality is light, the installation is convenient, and the cost performance is high.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some implementations of the present invention. For example, other drawings can be obtained according to these drawings without any creative work for those skilled in the art, wherein:

1 is a schematic structural view of a coated nonwoven fabric diffusion sheet according to a preferred embodiment of the present invention;

2 is a schematic structural view of another preferred embodiment of a coated nonwoven fabric diffusion sheet according to the present invention;

The components of the drawings are labeled as follows: 1. Surface optical coating, 2. Non-woven substrate.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described below. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 to FIG. 2, an embodiment of the present invention includes:

A coated nonwoven fabric diffusion sheet comprising: a surface optical coating 1 and a nonwoven fabric substrate 2, the surface optical coating 1 being uniformly coated on the surface of the nonwoven fabric substrate 2 or permeated through the surface Inside the nonwoven fabric substrate 2, the surface optical coating 1 is a vinyl acetate coating, an acrylic coating or an OCA optical adhesive coating.

The present invention has a coated nonwoven fabric diffuser pattern of two types, with the difference that the surface optical coating 1 is coated on one or both sides of the nonwoven fabric substrate 2. 1 is a single-coated non-woven fabric diffusion sheet, and FIG. 2 is a double-coated non-woven fabric diffusion sheet, which is more flexible in practical application, is suitable for local conditions, and saves manufacturing and use costs.

Further, the nonwoven fabric substrate 2 is a single synthetic fiber or a nonwoven fabric made of a plurality of fibers, which is light in weight, low in cost, and flexible in thickness control.

In addition, the thickness of the non-woven fabric is 0.05 mm to 1 mm, and is widely applicable to mobile phones, LCD TV display backlights, lighting, billboard light box covers and the like.

Further, the surface optical coating 1 has a thickness of 0.001 mm to 0.5 mm, and is formed into a plurality of diffusing sheets of optical properties according to actual needs to meet various customer requirements.

In summary, the coated non-woven fabric diffusion sheet of the present invention is simpler in process, lower in cost, and lighter in weight than the transparent polyester film diffusion sheet, and helps to reduce liquid crystal display. The thickness of the device is additionally applied in the field of lighting shades or advertising light boxes, which can improve the transmittance and uniformity of the light, reduce the weight of the device, facilitate construction and high safety performance.

The above description is only an embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent flow transformation made by using the contents of the specification of the present invention, or directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A coated nonwoven fabric diffusion sheet, comprising: a surface optical coating layer and a nonwoven fabric substrate, the surface optical coating layer is uniformly coated on the surface of the nonwoven fabric substrate or penetrated through the surface to Inside the nonwoven fabric substrate, the surface optical coating is a vinyl acetate coating, an acrylic coating or an OCA optical adhesive coating.
The coated nonwoven fabric diffusion sheet according to claim 1, wherein the surface optical coating is applied to one side or both sides of the nonwoven fabric substrate.
The coated nonwoven fabric diffusion sheet according to claim 1, wherein the nonwoven fabric substrate is a nonwoven fabric made of synthetic fibers.
The coated nonwoven fabric diffusion sheet according to claim 3, wherein the nonwoven fabric has a thickness of 0.05 mm to 1 mm.
The coated nonwoven fabric diffusion sheet according to claim 1, wherein the surface optical coating layer has a thickness of from 0.001 mm to 0.5 mm.