JP5177608B2 - Protective sheet mounting structure - Google Patents

Description

The present invention relates to a protective sheet mounting structure, and in particular, a liquid crystal display (LCD display; hereinafter sometimes abbreviated as “LCD”) provided in an electronic apparatus such as an image forming apparatus, an electronic notebook, a game apparatus, or a PDA. Alternatively, the present invention relates to a protective sheet mounting structure that can be easily attached to a predetermined attachment position on a touch panel attached to the surface of an LCD.

In an electronic device such as an image forming apparatus, an electronic notebook, a game device, a mobile phone, or a PDA, a liquid crystal display or a touch panel mounted on the surface (upper surface) of the LCD is mounted. A protective sheet is attached to protect the LCD and touch panel. The protective sheet prevents the surface of the LCD or touch panel from becoming dirty or damaged. In particular, touch panels for inputting coordinates by touching lightly are easily scratched because the surface is pressed with a pointed object such as a ballpoint pen or stylus pen, and ink from the ballpoint pen adheres to the touch panel surface. And easy to get dirty. In addition, when directly operating with a finger, the LCD and the touch pen are not damaged, but the fingerprint is attached and it is difficult to see. As a protective sheet for preventing such harmful effects, there is a technique such as Patent Document 1 or Patent Document 2.
JP 2000-249596 A JP 2002-304254 A

Protective sheets such as Patent Document 1 and Patent Document 2 are attached to an LCD, a touch panel, or the like, thereby preventing the LCD, the touch panel, or the like from being directly stained or damaged. Also, if a protective sheet is attached, even if the protective sheet becomes dirty or damaged, it is possible to return to the same state as before use by simply replacing the protective sheet, so replace the damaged LCD or touch panel itself. There is no need, and the replacement cost of parts can be reduced.

However, when a protective sheet such as Patent Document 1 or Patent Document 2 is manually attached to an LCD or touch panel without using a machine, the back surface to which the adhesive is applied is applied to the application surface (front surface) of the LCD or touch panel. The approximate position is determined by approaching, and it is pasted by pressing on the pasting surface. At that time, for an unfamiliar user, it is not easy to accurately determine the sticking surface, the sticking position or angle is shifted and it becomes difficult to see, or bubbles are likely to enter depending on the way of pressing when sticking. Further, due to the structure of the housing of the electronic device on which the LDC or the touch panel is mounted, for example, if the level difference between the surface of the housing and the surface of the LDC or touch panel is large, it is more difficult to position and paste the protective sheet. In addition, when the pasting operation is performed after removing the auxiliary sheet that protects the adhesive surface of the protective sheet to which the adhesive has been applied, the adhesive surface of the protective sheet is attracted to the LCD or the touch panel, and the pasting position is shifted. Affixed or peeled off at a time, the adhesive strength decreases during that time, and air bubbles easily enter. Furthermore, the user's finger is likely to touch the adhesive surface or surface of the protective sheet, and the fingerprint may be attached to the adhesive surface or the like. As described above, when a fingerprint is attached or bubbles are generated, there is a problem that it becomes difficult to see the LCD after the protective sheet is attached.

Therefore, the main purpose of the present invention is not affected by the skill and experience of the person applying the protective sheet when applying the protective sheet to a protected surface such as a liquid crystal display (LCD) or a touch panel, It is an object to provide a mounting structure for a protective sheet that can be easily positioned and pasted even by an amateur.
Another object of the present invention is to provide a protective sheet mounting structure capable of reducing fingerprints on the adhesive surface or the like of the protective sheet and generating bubbles as much as possible.

The invention according to claim 1 is a protective sheet mounting structure for mounting a protective sheet to be attached to a protected surface of an electronic device, and includes a protective sheet, a release sheet, and a mounting auxiliary sheet. The protective sheet has a planar shape that covers the surface of the protected surface, and an adhesive layer is formed on one surface thereof. The release sheet is bonded to the surface of the protective sheet where the adhesive layer is formed, and is peeled off when the protective sheet is applied to the protected surface. The attachment auxiliary sheet is bonded to the surface of the protective sheet on which the adhesive layer is not formed, and is formed to protrude on a predetermined side of the protective sheet. The alignment unit has a shorter length than the one side, and the alignment unit. And a handle portion formed to protrude on one side facing each other.

According to a second aspect of the invention, in the first aspect of the invention, the protected surface is a liquid crystal display .

The invention according to claim 3 is the invention according to claim 1, wherein the protected surface is a touch panel .

According to a fourth aspect of the present invention, in the first to third aspects of the invention, the thickness of the protective sheet is selected to be thicker than that of the auxiliary mounting sheet.
According to a fifth aspect of the present invention, in the first to fourth aspects of the invention, the protective sheet and the mounting auxiliary sheet have a substantially rectangular shape.

According to the present invention, when a protective sheet is applied to a protected surface such as a liquid crystal display (LCD) or a touch panel, it is an amateur without being affected by the skill and experience of the person applying the protective sheet. In addition, a protective sheet mounting structure can be obtained that is easy to position and can be applied with good appearance.
In addition, it is possible to reduce fingerprints on the adhesive surface or the like of the protective sheet and to reduce the generation of bubbles as much as possible.

  FIG. 1 is an exploded perspective view showing the structure of a protective sheet mounting structure according to an embodiment of the present invention. In FIG. 1, a protective sheet mounting structure 10 according to this embodiment includes a protective sheet 11, a release sheet (or adhesive surface protective sheet) 12 attached to the back surface of the protective sheet 11, and a protective sheet 11. It is comprised from the mounting | wearing auxiliary | assistant sheet | seat (or surface protection film) 13 to be formed.

Specifically, the protective sheet 11 is selected to have a shape that is substantially the same (for example, a rectangular shape) as that of the liquid crystal display or touch panel (not shown) whose planar shape is a protected surface of the electronic device, or a slightly smaller shape. Then, an adhesive (or adhesive) is applied to the adhesive surface (back surface) 11a attached to the LCD or touch panel. The protective sheet 11 is made of a transparent material having an appropriate strength (for example, a hard coat + PET having a thickness of about 0.15 mm including the adhesive layer). A release sheet (or adhesive surface protective sheet) 12 is bonded to the back surface (adhesive surface) of the protective sheet 11 in order to prevent a decrease in the adhesive strength of the adhesive. The release sheet 12 is made of a material (for example, silicon-coated polyester) that is easy to stick and peel so that the adhesive strength on the back surface of the protective sheet 11 does not decrease when the protective sheet 11 is peeled off. The planar shape of the release sheet 12 is selected to be larger than the planar shape of the protective sheet 11 and the auxiliary mounting sheet 13. The auxiliary mounting sheet 13 has a flat portion 131 that is substantially the same as or slightly larger than the flat shape of the protective sheet 11, and a positioning portion 132 on one side (for example, one of the short sides, the left side in the drawing) of the flat portion 131. And a handle 133 is formed on the other side (for example, the right side in the figure). The positioning part 132 is selected as a shape for facilitating the positioning of the protective sheet 11 when the protective sheet 11 is pasted. For example, the positioning part 132 is short as the shape of the gap between the touch panel (or LCD) on which the protective sheet 11 is pasted and the housing. It is selected to have a belt-like shape that is slightly smaller than the side (vertical side) and protrudes to a width of 2 to 5 mm. The handle portion 133 is a piece that can be gripped by the user's hand when positioning and mounting, and is selected to have a shape that can be easily held by a fingertip (for example, a shape that is about 5 to 10 times larger than the width of the positioning portion 132). The back surface of the attachment auxiliary sheet 13 is processed so as to have appropriate adhesion and be easily peeled off when bonded to the upper surface of the protective sheet 11. Therefore, the attachment auxiliary sheet 13 serves as an auxiliary tool for increasing the adhesion by pressing the protection sheet 11 when positioning and attaching (or sticking) the protection sheet 11. Further, the positioning part 132 and / or the handle part 133 are colored as necessary to make the boundary with the flat surface part 131 easy to understand.

  When manufacturing the protective sheet mounting structure 10 as described above, the protective sheet 11 is first cut to a predetermined size, and an adhesive layer is formed on one surface by applying an adhesive material. This protective sheet 11 is attached to the upper surface of the release sheet 12. Also, a mounting auxiliary sheet 13 having the same size as the planar shape of the release sheet 12 is prepared, and pieces having these shapes are stretched on the positioning portion 132 and the handle portion 133 of the mounting auxiliary sheet 13. And the attachment assistance sheet | seat (surface protection film) 13 is further affixed from the upper surface of the peeling sheet 12 with which the protection sheet 11 was affixed. Thereafter, the mounting auxiliary sheet 13 is pressed by a planar mold, and the mounting auxiliary sheet 13 is perforated. Then, the remaining portion around the auxiliary mounting sheet 13 is removed, and the protective sheet mounting structure 10 of this embodiment is manufactured.

Next, the case where the protective sheet 10 is mounted on the surface of a touch panel or a liquid crystal display of an electronic device using the protective sheet mounting structure 10 will be described. FIG. 2 is a diagram showing a state in which the release sheet 11 is peeled off when the protective sheet 10 is attached to the touch panel or the LCD. In this state, the pressure-sensitive adhesive layer of the protective sheet 10 faces downward and is attached to the back surface of the auxiliary mounting sheet 13.

  FIG. 3 shows an example of a game device 20 to which the protective sheet 10 is attached. The game apparatus 20 has an opening formed on one main surface of the housing 21, and the touch panel 22 is held by exposing the surface from the opening. A liquid crystal display (LCD) for displaying images such as symbols and switches when operating the touch panel 22 is housed and held on the lower surface of the touch panel 22. A gap that matches the shape of the positioning portion 132 is formed between the left end of the surface of the touch panel 22 and the inner wall near the opening of the housing 21. If necessary, operation switches 23a and 23b are mounted on one main surface of the housing 21 on the left and right sides of the opening.

FIG. 4 is a perspective view for explaining a state of positioning and sticking to the touch panel 22 using the mounting auxiliary sheet 13 to which the protective sheet 11 is attached. First, the protective sheet mounting structure 10 shown in FIG. 1 is prepared, and the release sheet 12 is peeled off as shown in FIG. In this state, the wearer (wearer) holds the handle portion 133 of the attachment assisting sheet 13 with the right hand, and inserts the positioning portion 132 into the gap between the housing 21 and the touch panel 22 from the right oblique direction of the opening, thereby positioning the gap. Positioning is performed so that the portion 132 has a predetermined positional relationship. Then, the wearer presses the upper surface of the mounting assisting sheet 13 near the positioning portion 132 with the finger of the left hand, and gradually moves it to the right while stroking the upper surface of the mounting assisting sheet 13 with the finger of the left hand. At this time, the wearer brings the position of the right hand holding the handle 133 close to the surface of the touch panel 22 and attaches the entire surface of the attachment auxiliary sheet 13 to the surface of the touch panel 22. Then, with the protective sheet 11 firmly attached to the touch panel 22, the attachment auxiliary sheet 13 is pulled up and peeled off from the protective sheet 11. In this way, the protective sheet 11 is positioned at a predetermined position on the touch panel 22 and firmly attached.

As described above, the protective sheet mounting structure 10 is configured as shown in FIG. 1, and the protective sheet 11 is attached to the back surface of the auxiliary mounting sheet 13, as described with reference to FIG. If the protective sheet 11 is attached to the surface of the touch panel 22 while being positioned using the positioning unit 132 and pressed from the upper surface of the auxiliary mounting sheet 13, the positioning becomes easy, the positioning can be accurately performed at a predetermined position, and the protective sheet has a good appearance. 11 can be pasted on the touch panel 22. In addition, since the shape of the attachment assisting sheet 13 has been devised, even an amateur can easily attach the protective sheet with a good appearance without requiring the skill of the wearing person.

  FIG. 5 is an enlarged view of another example of the positioning portion. In the mounting structure 10A of this embodiment, the positioning portion 132a of the mounting auxiliary sheet 13a has a triangular shape, and the gap between the housing 21 and the touch panel 22 is also selected to have a shape opposite to the triangular shape of the positioning portion 132a. It is. If it is formed like this positioning part 132a, the positioning accuracy can be increased by matching the apexes of the triangles and the hypotenuse part. In addition, the shape of the positioning part 132 is not restricted to the shape as described in an Example, A suitable shape can be selected.

It is a disassembled perspective view which shows the structure of the mounting structure body of the protection sheet of one Example of this invention. It is a figure which shows the example of the mounting structure body of the protection sheet of the state which peeled off the adhesive surface protection sheet. It is a perspective view in the state where a protective sheet is pasted on a game device which is an example of an object to which a protective sheet is pasted. It is sectional drawing of the mounting state of a protection sheet. It is an enlarged view of the other example of the positioning part of a mounting assistance sheet.

DESCRIPTION OF SYMBOLS 10 Protective sheet mounting structure 11 Protective sheet 12 Adhesive surface protective sheet 13 Mounting auxiliary sheet 131 Plane portion 132 of mounting auxiliary sheet Positioning unit 133 Handle unit 20 Game device 21 Housing 22 Touch panel

Claims (5)

A protective sheet mounting structure for mounting a protective sheet attached to a protected surface of an electronic device,
A protective sheet having a planar shape covering the surface of the protected surface, and having an adhesive layer formed on one surface thereof;
A release sheet that is bonded to the surface on which the adhesive layer of the protective sheet is formed and is peeled off when the protective sheet is applied to the protected surface;
An alignment portion that is bonded to the surface of the protective sheet where the adhesive layer is not formed and protrudes on a predetermined side of the protective sheet, and has a shorter length than the one side, and faces the alignment portion A protective sheet mounting structure including a mounting auxiliary sheet including a handle portion that protrudes from one side.   The protective sheet mounting structure according to claim 1, wherein the protected surface is a liquid crystal display.   The protective sheet mounting structure according to claim 1, wherein the protected surface is a touch panel.   The protective sheet mounting structure according to any one of claims 1 to 3, wherein a thickness of the protective sheet is selected to be thicker than the auxiliary mounting sheet.   The protective sheet mounting structure according to claim 1, wherein the protective sheet and the mounting auxiliary sheet have a substantially rectangular shape.

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