CN210635925U

CN210635925U - Simple high-refraction-treatment TFE protective film

Info

Publication number: CN210635925U
Application number: CN201921557524.5U
Authority: CN
Inventors: 孙攀; 王健; 牛建超
Original assignee: Shanghai Jingshen New Material Co ltd
Current assignee: Shanghai Jingshen New Material Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-29
Anticipated expiration: 2029-09-19

Abstract

The utility model relates to a TFE protection film that simple and easy high refraction was handled, which comprises a substrate, the substrate be luminousness > 91%, haze < 1.5% and thickness for 75-100 mu m's optical film one face of substrate coating has simple and easy AR layer, and the PU glue film coats in the another side of substrate and covers from the type membrane, wherein, the composition on simple and easy AR layer is siloxane class compound, and thickness is 50-500nm, and surface resistance reaches 10⁸‑10¹¹Omega/□; the surface resistance of the PU adhesive layer is 10⁸‑10¹¹Omega/□, and the peel force is 0-3g/25 mm. The utility model discloses the simple and easy high TFE protection film of rolling over has improved the luminousness of protection film by a wide margin, makes its luminousness improve 94-95% from about 92%, can see through the circumstances that the protection film observed flexible panel defect itself, on the basis of guaranteeing other performances of TFE protection film, makes it obtain better optical property, is applicable to more harsh processing procedure process.

Description

Simple high-refraction-treatment TFE protective film

Technical Field

The utility model relates to a protection film field specifically relates to a TFE protection film that simple and easy high refraction was handled.

Background

Flexible display panels are flexible printed circuit boards with high reliability made of polyimide or polyester films, and are increasingly widely used due to their advantages of high wiring density, light weight, thin thickness, etc.

The Organic Light-Emitting Diode (OLED for short) is thin, and can be mounted on flexible materials such as plastic or metal foil to manufacture an OLED flexible display panel. The flexible display panel of the OLED adopts a plastic substrate, instead of a common glass substrate, and adheres a composite protective Film on the back surface of the display panel by using a Thin Film Encapsulation (TFE) technology, and the panel is more easily bent and is not easily broken by adhering the composite protective Film.

The flexible display panel of OLED has display area and PAD district (peripheral lead wire district), and in the flexible display screen manufacture process, need peel off the compound protection film that pastes in peripheral lead wire district often in the encapsulation and get rid of, however, get rid of the compound protection film in-process, peel off the TFE layer and the barrier layer that are located flexible display panel display area together very easily because of atress or heat influence, cause flexible display panel damage, and then arouse inside aqueous vapor gets into display panel, pollute the OLED device, cause the device bad.

In addition, because the light transmittance of the base material is limited, the protective film is difficult to achieve more than 93 percent of light transmittance, and the common TFE protective film cannot meet the requirements under the condition that the flexible panel needs to be observed through the protective film.

Disclosure of Invention

To the not enough of prior art, the utility model discloses the technical problem that will solve is: the utility model provides a simple and easy high refraction is handled TFE protection film, this TFE protection film can effectual improvement protection film's luminousness itself to satisfy the observation of passing through the protection film to pasted flexible panel disadvantage.

For solving the technical problem, the utility model provides a simple and easy high refraction departmentThe TFE protective film of reason, including the substrate, the substrate be that luminousness > 91%, haze < 1.5% and thickness are 75-100 mu m's optical film substrate one face coating has simple AR layer, PU glue film coats in the another side of substrate and covers from the type membrane, wherein, the composition on simple AR layer is siloxane class compound layer, and thickness is 50-500nm, and surface resistance reaches 10⁸-10¹¹Omega/□; the surface resistance of the PU adhesive layer is 10⁸-10¹¹Omega/□, and the peel force is 0-3g/25 mm.

The simple AR layer can improve the light transmittance of the base material by 2-3%, and has excellent adhesiveness and certain antistatic performance.

On the basis of the scheme, the optical film is a PET, PC or COP film with a flat and clean surface and without point-shaped foreign matters.

On the basis of the scheme, the PU adhesive layer is made of polyurethane polymer, the thickness of the PU adhesive layer is 50-100 mu m, and the thickness tolerance is within 5 mu m.

On the basis of the scheme, the PU adhesive layer is a PU adhesive layer which can not generate residual adhesive pollution to a screen and has the stripping force not more than 5g/25mm under long-term high temperature and high humidity. Such as 40 ℃. + -. 2 ℃; the stripping force under the high temperature and high humidity of 93% +/-2% is not more than 5g/25mm, and the high temperature and high humidity can not generate the pollution of residual glue and the like to the screen.

On the basis of the scheme, the release film is a PET release film with the thickness of 25-100 um.

On the basis of the scheme, the release film is a flat, clean and non-point-shaped foreign matter double-sided anti-static release film, namely the release film is excellent in flatness and cleanliness and cannot have the problems of unevenness, point-shaped foreign matters and the like, and the release surface resistance of the release film is 10⁵-10¹¹Omega/□, the back resistance of the release film is 10⁵-10¹¹Ω/□。

The utility model has the advantages that: the transmittance is improved, the simple high-refraction TFE protective film has the transmittance of more than 93%, and the defects of the flexible panel can be observed through the protective film. Not only obtains better optical performance, but also is suitable for more severe process.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

reference numbers in the figures:

1-a substrate;

2-AR layer;

3-PU glue layer;

and 4, release film.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the simple high-refraction-treatment TFE protective film comprises a substrate 1, wherein the substrate 1 is an optical thin film with the light transmittance of more than 91%, the haze of less than 1.5% and the thickness of 75-100 mu m, a simple AR layer 2 is coated on one surface of the substrate, a PU adhesive layer 3 is coated on the other surface of the substrate and covered by a release film 4, the simple AR layer is a siloxane compound layer with the thickness of 50-500nm, and the surface resistance of 10⁸-10¹¹Omega/□; the surface resistance of the PU adhesive layer is 10⁸-10¹¹Omega/□, and the peel force is 0-3g/25 mm.

This example was prepared by the following procedure:

selecting a base material: a light transmittance of more than 91 percent, a haze of less than 1.5 percent and a thickness of 75-100 mu m,

(a) coating a simple AR layer on one surface of the substrate, wherein the simple AR layer contains siloxane compounds with a thickness of 50-500nm and a surface resistance of 10⁸-10¹¹Ω/□；

(b) Coating a PU adhesive layer on the other surface of the substrate, wherein the thickness of the PU adhesive layer is 50-100 mu m, the stripping force of the PU adhesive layer under long-term high temperature and high humidity is not more than 5g/25mm, the high temperature and high humidity can not generate the pollution of residual glue and the like on a screen, and the surface resistance of the PU adhesive layer is 10⁸-10¹¹Omega/□, the peeling force is 0-3g/25 mm;

(c) the PET release film with the release performance and the composite thickness of 25-100 um is arranged on the PU adhesive layer, the release film is a flat, clean and point-free foreign matter double-sided anti-static release film, and the release film has a release surface resistance of 10 DEG⁵-10¹¹Omega/□, whichThe back resistance of the release film is 10⁵-10¹¹Ω/□；

(d) And (4) cutting, packaging, delivering and the like the finished product after production.

The utility model provides an in-process that the laminating can be guaranteed as the process membrane to the TFE protection film, can effectual filling line's height difference, play the effect of abundant protection, can not produce pollution and difficult influence such as tearing to being pasted thing itself, simultaneously, the luminousness of protection film improves 94-95% from about 92%, because the high printing opacity characteristic of membrane material, the detection that can be better is pasted the condition such as apparent and the malady of thing.

Claims

1. The utility model provides a simple and easy high refraction TFE protection film, includes the substrate, its characterized in that, the substrate be the optical film that luminousness > 91%, haze < 1.5% and thickness are 75-100 mu m one face of substrate is coated with simple and easy AR layer, and the PU glue film coats in the another side of substrate and covers from the type membrane, wherein, simple and easy AR layer's composition is siloxane class compound layer, and thickness is 50-500nm, and surface resistance reaches 10⁸-10¹¹Omega/□; the surface resistance of the PU adhesive layer is 10⁸-10¹¹Omega/□, and the peel force is 0-3g/25 mm.

2. The simple high refractive index TFE protective film of claim 1, wherein: the optical film is a PET, PC or COP film with a smooth and clean surface and no punctiform foreign matters.

3. The simple high refractive index TFE protective film of claim 1, wherein: the thickness of the PU adhesive layer is 50-100 mu m, and the thickness tolerance is within 5 mu m.

4. The simple high refractive index TFE protective film as claimed in claim 1 or 3, wherein: the PU glue layer is a PU glue layer which can not cause residual glue pollution to a screen and has the stripping force not more than 5g/25mm under long-term high temperature and high humidity.

5. The simple high refraction treatment TFE protective film according to claim 1, wherein said release film is PET release film with thickness of 25-100 um.

6. The simple high refraction treatment TFE protective film according to claim 1 or 5, wherein: the release film is flat, clean and double-sided anti-static release film without punctiform foreign matters, and the release surface resistance of the release film is 10⁵-10¹¹Omega/□, the back resistance of the release film is 10⁵-10¹¹Ω/□。