JP2015199897A - Method of attaching protective filter film for touch panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective filter film for the motor of touch panels which allows easy sticking and re-sticking without mixing of bubbles.SOLUTION: A method of attaching a protective filter film for touch panels comprises sticking one principal surface of a tape having an adhesive layer on both principal surfaces to the right and left parts or the upper and lower peripheral parts of a protective filter film, sticking the adhesive layer of the other principal surface of the tape to a display surface and a flat surface part of the outside part of the display surface of a touch panel and fastening the protective filter film covering the display surface of the touch panel.

Description

The present invention relates to an attachment in which a protective filter film for a touch panel can be easily applied without generating bubbles and can be repeatedly applied.

In the touch panel monitor, the reflected light or fingerprints on the surface may adhere and make it difficult to see the screen. In addition, since the monitor surface may be damaged by an external impact, a protective filter film is used as a countermeasure. As the protective film, there is generally marketed a silicon full-surface adhesive type coated with a silicon adhesive layer that can be re-applied to the entire back side of the film by a machine such as gravure coating.

JP2003-22027 JP 2009-276748 A JP2012-14125 All the documents relate to the attachment of the cover of the monitor device, but not for the touch panel. Patent Document 3 is designed to prevent the generation of bubbles by using an adhesive film, but for the touch panel display. There is no mention of film attachment to the touch panel and operation tests.

With the commercially available silicon full-face adhesive protective filter film that can be re-applied repeatedly as the touch panel screen becomes larger in size, there is a high possibility of bubbles, etc., and there is no dust or dust using the attached tool such as a spatula. If you do not stick it carefully over time, you will not be able to apply it without bubbles.

In the present invention, one main surface of a tape having adhesive layers on both main surfaces is attached to the left and right or upper and lower peripheral portions of the protective filter film, and the adhesive layer on the other main surface of the tape is attached to the touch panel display surface. Provided is a method for attaching a protective filter film for a touch panel, wherein the filter film is attached to a flat flat portion on an outer side and the filter film covering the display surface is fixed to the touch panel.

The present invention desirably provides a method for attaching a protective filter film for a touch panel, wherein the tape has a thickness of 0.05 mm to 0.6 mm and the adhesive layer on the other main surface is a silicon adhesive layer.

According to the present invention, when a protective filter film for a touch panel is applied to the touch panel surface, it can be easily applied in a short time without any bubbles even if anyone applies without using a spatula, etc. Work is easy and there is no effect on touch panel operation.

It is a top view of the state currently affixed on the right-and-left outer flat part of the touchscreen display surface which affixes a silicon adhesive tape on the back surface of a protective filter film. It is a top view of the state which affixed the protection filter film of FIG. 1 on the said display surface and the flat plane part 6 of the outer side of the touchscreen display surface which has 4 camera parts of a tablet PC main body. It is a front view of the state which looked at FIG. 2 from the side which shows the state in which the space (air layer) 7 is made on the touchscreen display surface 5. FIG. 1 has a four-camera part of the tablet PC main body with the protective filter film pasted on the two upper and lower sides in addition to the left and right sides to fit the flat part of the touch panel display surface. It is the top view affixed on the said display surface and the flat plane part 6 of the outer side part of a touchscreen display surface. In the cross-sectional view of the silicon adhesive tape, 8 is an Si adhesive layer 9 and a polyester film 10 is an acrylic adhesive layer.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.

As shown in FIG. 1, a thickness of 0.05 mm is formed on the left and right peripheral portions (on the display surface and the flat flat portion 6 on the outer side of the touch panel display surface) of the surface (back surface) to be attached to the touch panel of the protective filter film 1. A silicon adhesive tape 2 having a thickness of ˜0.6 mm and a width of 0.3 mm to 20 mm is applied with a length of 50% or more of the vertical length of the protective filter film 1. Note that release paper (not shown) is formed on both main surfaces of the tape 2.

As shown in FIG. 5, for example, the tape 2 is formed by forming a Si (silicon) adhesive layer 8 on one main surface of a polyester film 9 having a thickness of 0.1 mm and a transparent acrylic adhesive layer 10 on the other main surface, Layers 8 and 10 are very thin and the overall thickness is approximately the thickness of film 9. Release paper (not shown) is formed on the surfaces of the layers 8 and 10 of the tape 2. FIG. 1 shows a state in which the release paper on the layer 10 side is peeled off and the tape 2 is attached to the periphery of the protective filter film 1 in the layer 10.

As shown in FIG. 2, the release paper on the Si adhesive layer 8 of the silicon adhesive tape 2 of the protective filter film 1 of FIG. 1 is peeled off, and the flat surface portion 6 flat with the display surface outside the touch panel display surface of the tablet PC main body. Affixed on top with the Si adhesive layer 8. The size of the protective filter film 1 is larger than the touch panel display surface 5 and smaller than the tablet PC main body 3 so that the silicon adhesive tape 2 is placed on the display surface and the flat flat surface portion 6 outside the touch panel display surface. To do.

When the protective filter film 1 is mounted on the flat flat surface portion 6 and the display surface outside the touch panel display surface by the above method, the protective filter film 1 is placed between the protective filter film 1 and the touch panel display surface 5 as shown in FIG. Can form a space (air layer) 7 of 0.05 mm to 0.6 mm. Bubbles are not generated by this space (air layer) 7. This method can be executed in a short time, and can be easily pasted and repeated.

The experimental data is shown below. Thickness 0.05mm-0.6mm, width 5mm Silicone adhesive tape 2 is used with a 0.3mm thickness protective filter film 1 attached, the display surface and the flat surface portion outside the touch panel display surface ( A touch panel operation test was performed by attaching the silicon adhesive tape 2 to a position 5 mm to the left and right outside the display surface. In the operation test, the touch, swipe, and slide operations were performed 10 times at the positions of a, b, c, d, and e in FIG. 2 and all were normal operations, and those that did not operate at least once were ×. did. From the results shown below, it was found that the thickness of the tape is preferably 0.05 to 0.6 mm.
0.05mm ○
0.1mm ○
0.2mm ○
0.3mm ○
0.4mm ○
0.5mm ○
0.6mm ○
0.7mm ×

Industrial applicability

The present invention can be used for attaching a protective filter film to various electronic devices having a touch panel display surface.

1 protective filter film 2 silicon adhesive tape 3 tablet PC main body 4 camera 5 touch panel display surface 6 flat surface portion 7 space (air layer) flat with the display surface outside the touch panel display surface
8 Silicone adhesive layer 9 Polyester film 10 Acrylic adhesive layer

Claims (2)

One main surface of a tape having adhesive layers on both main surfaces is attached to the left and right or upper and lower peripheral portions of the protective filter film, and the display layer on the outer side of the touch panel display surface is attached to the other main surface of the tape. A method for attaching a protective filter film for a touch panel, comprising: adhering the filter film to a flat portion flat with a surface to cover the display surface of the touch panel. The method for attaching a protective filter film for a touch panel according to claim 1, wherein the tape has a thickness of 0.05 mm to 0.6 mm, and the adhesive layer on the other main surface comprises a silicon adhesive layer.

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