WO2017031717A1

WO2017031717A1 - Method for laminating film on whole screen

Info

Publication number: WO2017031717A1
Application number: PCT/CN2015/088118
Authority: WO
Inventors: 曾一鑫; 丁俊; 郑运松; 李建华
Original assignee: 信利光电股份有限公司
Priority date: 2015-08-26
Filing date: 2015-08-26
Publication date: 2017-03-02
Also published as: CN106458339A

Abstract

A method for laminating a film on a whole screen comprises: cutting a film according to a predetermined peripheral size, the predetermined peripheral size being greater than a peripheral size of a lamination surface of a target cover board; laminating the cut film onto the lamination surface, the film totally covering the lamination surface; locating a periphery of the lamination surface to obtain the position of the periphery; setting a cutting route of the film according to the position of the periphery; and cutting the film along the cutting route by using laser. The method reduces a clearance between an edge of a film and an edge of a cover board, makes the film totally cover the cover board, improves the visual effect, and makes the film difficult to peel off and disengage.

Description

Membrane full screen attachment method

Technical field

The present invention relates to the field of electronic technology, and in particular, to a full-screen attachment method for a film.

Background technique

With the development of technology, visual electronic devices are becoming more and more popular. Normally, before the visual electronic device leaves the factory, a protective film will be attached to the outer cover of the visual electronic device screen to protect the screen from scratches and stains. Alternatively, a film having a special function, such as an explosion-proof film or an anti-glare film, may be attached to the outer cover of the screen of the visual electronic device to protect the screen from explosion-proof or anti-glare.

Existing film attachment methods include:

Step S01: cutting the film according to a predetermined peripheral size;

Step S02: attaching the film to the attachment surface of the cover.

Considering the measurement tolerance of the film during the attaching process, the cutting tolerance, the measurement tolerance of the cover plate, and the attaching tolerance during the attaching process, in order to accurately attach the film, it is necessary to set the predetermined peripheral size of the film. Reserve a certain tolerance range. Therefore, in the above attachment method, the predetermined peripheral size needs to be slightly smaller than the peripheral size of the target cover attachment surface.

Therefore, in the product obtained by the attachment method, the film has a clear gap to the side of the cover plate, thereby causing a small coverage of the film, a poor visual effect, and the film is easily peeled off from the gap, and even the film is peeled off.

Summary of the invention

In order to solve the above technical problem, an embodiment of the present invention provides a film attaching method, which reduces the film. The gap between the edge of the material and the edge of the cover plate covers the cover plate comprehensively, which enhances the visual effect and the film is not easily peeled off. The technical solutions are as follows:

A full-screen attachment method for a film material, comprising: cutting a film according to a predetermined peripheral size, wherein the predetermined peripheral size is larger than a peripheral size of the target cover attachment surface; and attaching the cut film to the attachment surface The film completely covers the attachment surface; positioning a peripheral edge of the attachment surface to obtain a position of the peripheral edge; setting a cutting route of the film according to a position of the peripheral edge; using a laser edge The cutting path cuts the film.

Preferably, the positioning the peripheral edge of the attachment surface comprises:

The peripheral edge of the attachment surface is positioned using a charge coupled device CCD alignment system.

Preferably, the positioning of the peripheral edge of the attachment surface by the CCD alignment system using the charge coupled device includes:

Obtaining a diagonal end point of the attached surface as a reference point;

The peripheral edge of the attachment surface is positioned with reference to the reference point.

Preferably, the setting a cutting route of the film according to the position of the peripheral edge comprises:

According to the position of the peripheral edge, a cutting route of the film is set by a computer aided design CAD system.

Preferably, the cutting the film along the cutting route by using a laser comprises:

Obtaining the type and thickness of the film;

Corresponding laser power and speed are set according to the type and thickness of the film;

The film is cut along the cutting path.

Preferably, the cutting the film along the cutting route comprises:

The film was cut along the cutting path using a carbon dioxide CO ₂ laser.

Preferably, the film is an explosion-proof film having a thickness of 0.08 mm, a corresponding laser power of 4 W to 6 W, including an end point value, and a speed of 200 mm/s to 220 mm/s, inclusive.

Preferably, the film is an anti-glare film having a thickness of 0.17 mm, a corresponding laser power of 7 W to 8.5 W, including an end point value, and a speed of 230 mm/s to 250 mm/s, inclusive.

Preferably, the film is a polarizer film having a thickness of 0.25 mm, a corresponding laser power of 8 W to 9.6 W, including an end point value, and a speed of 110 mm/s to 130 mm/s, inclusive.

Compared with the prior art, the beneficial effects of the present invention are:

In the present invention, the film material is cut into a film having a peripheral size larger than the outer size of the target cover attachment surface, attached to the attachment surface, and the film completely covers the attachment surface, and then passes through Positioning the peripheral edge position of the attachment surface, obtaining accurate position information of the peripheral edge of the target cover, setting the cutting route of the film according to the position of the peripheral edge, and cutting the film along the cutting route by using a laser. Thereby, the film material beyond the peripheral edge of the attaching surface is precisely cut, so that the gap of the edge of the film to the edge of the target cover plate is only affected by the positioning tolerance, no longer subject to the measurement tolerance of the film, the cutting tolerance, the cover plate The measurement tolerance and the influence of the adhesion tolerance during the attaching process, while the positioning tolerance is extremely small, and the influence on the product is small. Therefore, the gap between the obtained product film and the target cover edge is extremely small, so that the cover is comprehensively covered. The board enhances the visual effect and the film is not easily peeled off.

DRAWINGS

1 is a flow chart of a method for attaching a full-screen film according to a first embodiment of the present invention.

detailed description

As described in the background art, the prior art attachment method is to attach a film having a small outer circumference to the outside. On a large cover, the film must not extend beyond the cover. Such a method of attaching requires consideration of the measurement tolerance of the film during the attaching process, the cutting tolerance, the measurement tolerance of the cover plate, and the attaching tolerance during the attaching process, in order to accurately attach the film, it is necessary to set the film. When the predetermined outer dimensions of the material are reserved, a certain tolerance range is reserved, generally 0.2 mm to 0.8 mm, and the film has a certain distance from the edge to the cover. If the distance from the edge of the film to the edge of the cover exceeds 0.2 mm, the visual effect will have a clear gap, which will not achieve the full screen effect. There is a clear gap between the edge of the film and the edge of the cover plate, which will result in a small coverage of the film, poor visual effect, and easy peeling of the film from the gap, and even cause the film to fall off.

In view of the above, the present invention provides a full-screen attachment method for a film, characterized in that it comprises: cutting a film according to a predetermined peripheral size, the predetermined peripheral size being larger than a peripheral size of the target cover attachment surface; a film attached to the attachment surface, the film completely covering the attachment surface; positioning a peripheral edge of the attachment surface to obtain a position of the peripheral edge; setting according to the position of the peripheral edge Cutting route of the film; cutting the film along the cutting route with a laser.

In the present invention, the film material is cut into a film having a peripheral size larger than the outer size of the target cover attachment surface, attached to the attachment surface, and the film completely covers the attachment surface, and then passes through Positioning the peripheral edge position of the attachment surface, obtaining accurate position information of the target cover plate, setting the cutting route of the film according to the position of the peripheral edge, and cutting the film along the cutting route by using a laser, thereby accurately Cutting the film beyond the attachment surface so that the gap between the edge of the film and the target cover is only affected by the positioning tolerance, no longer subject to the measurement tolerance of the film, the cutting tolerance, the measurement tolerance of the cover and the sticker With the influence of the attached tolerances in the process, the positioning tolerance is very small, and the impact on the product is very small. Therefore, the gap between the obtained product film and the edge of the target cover is extremely small, so that the cover is fully covered and the cover is raised. Visual effect, and the film is not easy to peel off.

In order to make the above objects, features and advantages of the present invention more comprehensible, the following Specific embodiments of the invention are described in detail.

Specific details are set forth in the following description in order to provide a thorough understanding of the invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar promotion without departing from the scope of the present invention. The invention is therefore not limited by the specific embodiments disclosed below.

Embodiment 1:

This embodiment provides a full-screen attachment method for a film material, as shown in FIG. 1 , including:

Step S101: Cutting the film according to a predetermined peripheral size, the predetermined peripheral size being larger than a peripheral size of the target cover attaching surface.

In this step, the film is cut according to a predetermined peripheral size which is larger than the peripheral size of the target cover attachment surface. Specifically, the predetermined peripheral size is set to be larger than a peripheral dimension of the target cover attaching surface by 0.5 mm to 5 cm, including an end point value, that is, a predetermined peripheral size forming a graphic area larger than the target cover attaching surface, and predetermined The distance between the peripheral edge of the pattern formed by the outer dimension and the peripheral edge of the target cover attachment surface is 0.5 mm to 5 cm. In this embodiment, the distance may be 0.5 mm to 2 mm, including the end point value, and preferably, the distance may be 1 mm.

Step S102: attaching the cut film to the attaching surface, the film completely covering the attaching surface.

Specifically, in the embodiment, the cut film is attached to the attaching surface, and the outer peripheral dimension of the film obtained in the step S101 is larger than the outer dimension of the attaching surface. The film is completely covered by the attachment surface.

Step S103: positioning a peripheral edge of the attaching surface to obtain a position of the peripheral edge.

Specifically, in this step, the positioning of the peripheral edge of the attachment surface is performed by using a CCD alignment The system positions the peripheral edge of the attachment surface.

A CCD (Charge-coupled Device) converts an optical signal into an analog current signal, and performs image acquisition, storage, transmission, processing, and reproduction by amplifying and analog-to-digital converting the current signal. The CCD alignment system can accurately locate the peripheral edge of the attachment surface by acquiring an image of the attachment surface of the target cover.

Specifically, the CCD alignment system is used to locate the peripheral edge of the attachment surface, including:

Step S1031: acquiring a diagonal end point of the attachment surface as a reference point;

Step S1032: positioning the peripheral edge of the attachment surface with reference to the reference point.

In the prior art, the target cover is generally rectangular or square. Therefore, by attaching the target cover to the end of the corner as a reference point, the peripheral edge of the attachment surface can be accurately positioned.

If the target cover has another shape, when the shape is a regular shape, the position of the attachment surface is located with the end point of the symmetry axis of the shape as a reference point. When the shape is an irregular shape, three points having a fixed position are determined in the shape, and the fixed three points are used as a reference point, and the position of the attached surface can be positioned.

In other embodiments of the present application, this step may be performed by using other positioning systems.

Step S104: setting a cutting route of the film according to the position of the peripheral edge.

Specifically, the cutting route of the film material is set according to the position information of the peripheral edge obtained by the CCD positioning system. In this step, the cutting path is set to be cut along the peripheral edge, and in the embodiment, the cutting path is cut clockwise along the peripheral edge. In other embodiments of the invention, the cutting path can also be set to cut counterclockwise along the peripheral edge.

Step S105: cutting the film along the cutting route using a laser.

In this step, the type of laser used is different due to the type and thickness of the film. Therefore, it is necessary to set corresponding parameters according to the type, thickness, and type of laser of the film. Specifically, the parameters include the power and speed of the laser.

Specifically, cutting the film along the cutting route by using a laser in the step includes:

Step S1051: Acquire the type and thickness of the film.

Step S1052: setting corresponding laser power and speed according to the type and thickness of the film material;

Step S1053: cutting the film along the cutting route.

Specifically, in the present embodiment, the film is cut along the cutting path using a carbon dioxide CO ₂ laser. And, the cutting only cuts off the film. In this step, the laser completely cuts off the film beyond the peripheral edge of the attachment surface, and the laser does not damage the attachment surface.

In this embodiment, the carbon dioxide CO ₂ laser used has a maximum power of 60 W and a maximum speed of 600 mm/s.

In this embodiment, the film is an explosion-proof film having a thickness of 0.08 mm, and a corresponding laser power of 4 W to 6 W, including an end point value, and a speed of 200 mm/s to 220 mm/s, inclusive. Specifically, the laser power may be 4.8 W and the speed is 210 mm/s.

In this embodiment, the explosion-proof membrane is a common explosion-proof membrane, and specifically includes the following structure:

1. Anti-wear layer: composed of wear-resistant polyurethane;

2, colored PET safety base layer: made of high-strength, high-transparency PET polyester and pigment melt extrusion two-way stretching;

3, metal insulation layer: on the PET film by vacuum evaporation or vacuum magnetron sputtering metal aluminum, silver, nickel and other nano-level metal layer with higher reflectivity of infrared;

4. Composite adhesive: composed of polyurethane adhesive with good weather resistance and high transparency;

5, UV absorption layer: composed of special UV absorber;

6. Transparent PET safety base layer: composed of high strength and high transparent PET polyester film;

7. Installation adhesive: It consists of acrylate adhesive with good weather resistance and high transparency.

Laser cutting using the above parameters can completely remove the film beyond the peripheral edge of the attachment surface without damaging the attachment surface.

Moreover, in the embodiment, the positioning deviation of the laser machine is only 0.05 mm, which is higher than the existing filming method.

It can be seen that the film material is attached by the method in the embodiment, and the film material is cut into a film material having a peripheral size larger than the outer size of the target cover plate attachment surface, attached to the attachment surface, and the film is attached. The material completely covers the attaching surface, and then the position of the peripheral edge of the attaching surface is positioned to obtain accurate position information of the target cover, and the cutting route of the film is set according to the position of the peripheral edge, and the laser edge is used. The cutting path cuts the film to precisely cut the film beyond the attachment surface, so that the gap between the edge of the film and the target cover is only affected by the positioning tolerance, and is no longer subject to the measurement tolerance of the film. , the tolerance of the cutting, the measurement tolerance of the cover plate and the influence of the attached tolerance during the attaching process, and the positioning tolerance is very small (the laser machine positioning cutting tolerance is only 0.05mm), the impact on the product is small, therefore, the obtained product The gap between the edge of the film and the target cover is extremely small, so that the cover is fully covered, the visual effect is improved, and the film is not easily peeled off.

Embodiment 2

This embodiment provides a method for attaching a full-screen film to a membrane. The difference from the previous embodiment is that the step 104 in this embodiment includes:

A cutting path of the film is determined using a computer aided design CAD system based on the position of the peripheral edge.

Specifically, according to the position information of the peripheral edge obtained by the CCD positioning system, a cutting route of the film material is set by using a computer aided design CAD system. In this step, the shape information of the attachment surface is input in the CAD in advance, and the cutting route is set to be along the periphery of the attachment surface according to the position information of the peripheral edge obtained by the CCD positioning system. While cutting is performed, in the present embodiment, the cutting path is cut clockwise along the peripheral edge. In other embodiments of the invention, the cutting path can also be set to cut counterclockwise along the peripheral edge.

It can be seen that the film material is attached by the method in the embodiment, and the film material is cut into a film material having a peripheral size larger than the outer size of the target cover plate attachment surface, attached to the attachment surface, and the film is attached. The material completely covers the attaching surface, and then the position of the peripheral edge of the attaching surface is positioned to obtain accurate position information of the target cover, and the cutting route of the film is set according to the position of the peripheral edge, and the laser edge is used. The cutting path cuts the film to precisely cut the film beyond the attachment surface, so that the gap between the edge of the film and the target cover is only affected by the positioning tolerance, and is no longer subject to the measurement tolerance of the film. , the tolerance of the cutting, the measurement tolerance of the cover plate and the influence of the attachment tolerance during the attaching process, and the positioning tolerance is very small, and the influence on the product is small. Therefore, the obtained product film is edged to the edge of the target cover. Small, so that the cover is fully covered, the visual effect is improved, and the film is not easily peeled off.

Embodiment 3

Different from the above embodiments, in the embodiment, the laser cut film is an anti-glare film.

A carbon dioxide CO ₂ laser with a maximum power of 60 W and a maximum speed of 600 mm/s was used.

The anti-glare film has a thickness of 0.17 mm, a corresponding laser power of 7 W to 8.5 W, and includes an end point value, and the speed is 230 mm/s to 250 mm/s, inclusive. Specifically, the laser power can be 7.8 W and the speed is 180 mm/s.

The structure of the anti-glare film is a TAC (Tri-Acetyl Cellulose) film coated with an anti-glare coating.

The film material is attached by the method in the embodiment, and the film material is cut into a film material having a peripheral size larger than the outer size of the target cover plate attachment surface, attached to the attachment surface, and the film material is completely covered. Describe the surface, and then obtain the accurate position information of the target cover by positioning the peripheral edge position of the attachment surface, and set the cutting route of the film according to the position of the peripheral edge, and cut along the cutting route by using a laser. The film material, thereby accurately cutting the film material beyond the attachment surface, so that the gap of the film edge to the edge of the target cover plate is only affected by the positioning tolerance, and is no longer subject to the measurement tolerance and the cutting tolerance of the film material. The measurement tolerance of the cover plate and the influence of the attachment tolerance during the attaching process, and the positioning tolerance is extremely small, and the influence on the product is small. Therefore, the gap between the obtained product film and the target cover edge is extremely small, thereby comprehensively The cover plate enhances the visual effect and the film is not easily peeled off.

Embodiment 4

Different from the above embodiment, in the embodiment, the laser cut film is a polarizer film.

The polarizer film has a thickness of 0.25 mm, a corresponding laser power of 8 W to 9.6 W, and includes an end point value, and the speed is 110 mm/s to 130 mm/s, inclusive. Specifically, the laser power may be 9 W and the speed is 120 mm/s.

The structure of the polarizer in the embodiment includes: an opposite two-layer TAC (triacetate) film, a PVA (polyvinyl alcohol) film disposed in the middle of the two-layer TAC film, wherein one layer is The TAC film is coated with a certain thickness of PSA (pressure sensitive adhesive). In other embodiments of the present application, the TAC film on the other side may also be provided with a protective film.

Each part of this manual is described in a progressive manner. Each part focuses on the differences from other parts. The same similar parts between the parts can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but the scope of the invention.

Claims

A full-screen attachment method for a film material, characterized in that it comprises:

Cutting the film according to a predetermined peripheral size, the predetermined peripheral size being larger than a peripheral size of the target cover attachment surface;

Attaching the cut film to the attachment surface, the film completely covering the attachment surface;

Positioning a peripheral edge of the attachment surface to obtain a position of the peripheral edge;

Setting a cutting route of the film according to a position of the peripheral edge;

The film is cut along the cutting path using a laser.
The method according to claim 1, wherein the positioning the peripheral edge of the attachment surface comprises:

The peripheral edge of the attachment surface is positioned using a charge coupled device CCD alignment system.
The method according to claim 2, wherein the positioning of the peripheral edge of the attachment surface by the CCD alignment system using the charge coupled device comprises:

Obtaining a diagonal end point of the attached surface as a reference point;

The peripheral edge of the attachment surface is positioned with reference to the reference point.
The method according to claim 1, wherein the setting the cutting route of the film according to the position of the peripheral edge comprises:

According to the position of the peripheral edge, a cutting route of the film is set by a computer aided design CAD system.
The method of claim 1 wherein said cutting said film along said cutting path using a laser comprises:

Obtaining the type and thickness of the film;

Corresponding laser power and speed are set according to the type and thickness of the film;

The film is cut along the cutting path.
The method of claim 5 wherein said cutting said film along said cutting path comprises:

The film was cut along the cutting path using a carbon dioxide CO 2 laser.
The method according to claim 6, wherein the film is an explosion-proof film having a thickness of 0.08 mm, a corresponding laser power of 4 W to 6 W, including an end point value, and a speed of 200 mm/s to 220 mm/s, including Endpoint value.
The method according to claim 6, wherein the film is an anti-glare film having a thickness of 0.17 mm, a corresponding laser power of 7 W to 8.5 W, including an end point value, and a speed of 230 mm/s to 250 mm/s. , including endpoint values.
The method according to claim 6, wherein the film is a polarizer film having a thickness of 0.25 mm and a corresponding laser power of 8 W to 9.6 W, including an end point value, and the speed is 110 mm/s to 130 mm/s. , including endpoint values.