Sheet for attaching a protective sheet to a display screen and an attaching system for attaching the protective sheet

Abstract

To provide a sheet that can prevent intrusion of dust as much as possible when adhering a protection sheet on a display screen, and to provide an adhering system for adhering the protection sheet.SOLUTION: A sheet includes: a dust removal sheet part that is temporarily adhered on a display screen for removing dust on the display screen; a protection sheet that is equipped with an adhesion part for adhering on the display screen; a peelable peeling sheet that is attached to the adhesion part and protects the adhesion part; and a drawer part that is attached to the dust removal sheet part and peeling sheet. By pulling the drawer part after temporarily adhering the dust removal sheet on the display screen, the dust removal sheet and peeling sheet are simultaneously pulled, and the dust removal sheet part temporarily adhered on the display screen is removed from the display screen, and the peeling sheet is removed from the adhesion part, then the protection sheet is adhered to the display screen.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a sheet for attaching a protective sheet to a display screen of a mobile device and an attaching system for attaching the protective sheet.

Background Art

[0002] Mobile devices such as mobile phones including iPhone (registered trademark) are equipped with a display screen composed of liquid crystal, inorganic or organic EL, etc. Since the display screen may be damaged during use, the screen is protected by a resin film such as PET. Such a protective film is attached to the display screen by peeling off the release sheet to expose the adhesive portion, but there are problems such as the attachment position cannot be accurately determined or air bubbles may enter. Also, if the adhesive layer is touched by a finger, the adhesive strength may decrease due to sebum.

[0003] However, conventional attachment aids can be attached if they are resin films such as flexible and foldable PET. However, in the case of a hard glass sheet that allows some bending, since the hard sheet cannot be bent like a resin film such as PET, the conventional attachment aids cannot attach the glass sheet to the display screen without shifting.

[0004] In order to solve such problems, in Japanese Patent Application Laid-Open No. 2021-43283, "a main body for fixing a mobile device having a display screen, a protective sheet portion that is attached to the display screen and has a shape similar to the shape of the display screen to protect the display screen, and a positioning sheet for determining the attachment position for attaching the protective sheet portion to the display screen. The main body includes a first protrusion standing upward and a second protrusion standing upward. The positioning sheet includes a first hole portion that is swingably engaged with the first protrusion and a second hole portion that is fitted with the second protrusion. The protective sheet portion is detachably attached below the positioning sheet. The first hole portion is swingably placed on the first protrusion, and the second hole portion is fitted with the second protrusion. Thus, both the positioning sheet and the protective sheet portion are arranged obliquely inclined with respect to the main body in a side view." A sheet attachment system is disclosed.

[0005] Although the above sheet attachment system has been favorably received by consumers, dust may enter when attaching the protective sheet to the display screen. That is, after wiping off dirt and dust attached to the display screen of an electronic device such as a smartphone using a cleaning cloth or the like, the operation of attaching the protective sheet to the display screen is performed. However, even when such an operation is performed, the dust may enter between the protective sheet and the display screen.

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2021-43283 [Disclosure of the Invention] [Problems to be Solved by the Invention]

[0007] The present invention has been made in view of the above points, and an object thereof is to provide a sheet that can prevent dust from entering as much as possible when attaching a protective sheet to a display screen and an attachment system for attaching the protective sheet.

Means for Solving the Problem

[0008] To solve the above problems, the sheet from the first perspective has a dust removal sheet portion that is temporarily attached to the display screen to remove dust from the display screen, a protective sheet having an adhesive portion for attaching to the display screen, a peelable release sheet attached to the adhesive portion to protect the adhesive portion, a pull-out portion attached to the dust removal sheet portion and the release sheet. After temporarily attaching the dust removal sheet portion to the display screen, by pulling the pull-out portion, the dust removal sheet portion and the release sheet are pulled simultaneously, removing the dust removal sheet portion temporarily attached to the display screen from the display screen and removing the release sheet from the adhesive portion, thereby attaching the protective sheet to the display screen.

[0009] Also, for the sheet from the second perspective, in the first perspective, the dust removal sheet portion has an attachment portion, the release sheet has a peel-off attachment portion, and the pull-out portion is attached to the attachment portion and the peel-off attachment portion.

[0010] Also, for the sheet from the third perspective, in the second perspective, the pull-out portion has a groove portion in the longitudinal direction.

[0011] Also, for the sheet from the fourth perspective, in the second or third perspective, the dust removal sheet portion has a dust removal release sheet, and the dust removal release sheet has a first dust removal release short side that is a short side, and a cut line for separating a part of the dust removal release sheet is provided near the first dust removal release short side, which is substantially parallel to the first dust removal release short side.

[0012] Also, the sheet pasting system from the fifth perspective has a main body portion for arranging a mobile device having a display screen and the sheet from the third perspective. The main body portion further has a first protrusion portion, and the first protrusion portion engages with the groove portion.

[0013] In addition, the sheet pasting system according to the sixth aspect has, in the fifth aspect, a covering lid portion on the main body portion, and the lid portion further has an opening.

Advantages of the Invention

[0014] Since the present invention is configured and operates as described above, it is possible to provide a sheet that can prevent dust from entering as much as possible when the protective sheet is attached to the display screen, and an attachment system for attaching the protective sheet.

Brief Description of the Drawings

[0015]

Figure 1

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Figure 12

BEST MODE FOR CARRYING OUT THE INVENTION

[0016] Hereinafter, this embodiment will be described with reference to the illustrated embodiments. The sheet 10 of this embodiment is for protecting the display screen 500 in a mobile device 600 such as a smartphone. In order to remove dust on the display screen 500 and prevent dust from entering as much as possible, a dust removal sheet portion 20 that is temporarily attached to the display screen 500, a protective sheet 40 having an adhesive portion 30 for attaching to the display screen 500 to protect the display screen 500, and a peelable release sheet 60 that is attached to the adhesive portion 30 and protects the adhesive portion 30.

[0017] Further, the sheet 10 of this embodiment has a drawer portion 80. The drawer portion 80 is attached to the dust removal sheet portion 20 and the release sheet 60. The dust removal sheet portion 20 is preferably a paper sticker. The release sheet 60 is preferably PET (polyethylene terephthalate).

[0018] The dust removal sheet portion 20 preferably has the same shape as the display screen 500. In this embodiment, it has a substantially rectangular shape with rounded corners. That is, the dust removal sheet portion 20 has a first short side 21 that is a short side, a second short side 22 at a position facing the first short side 21, a first long side 23 that is a long side orthogonal to them, and a plurality of rounded portions 26 having a rounded shape with a second long side 24 at a position facing the first long side 23, presenting a substantially rectangular shape.

[0019] Further, the first short side 21 has an attachment portion 28 that protrudes outward from the first short side 21 and has a rectangular shape. Also, the second short side 22 has a positioning portion 29 that protrudes outward from the second short side 22 and has a rectangular shape. Note that the positioning portion 29 has a hole portion 29a. These will be described later. Note that, as shown in FIG. 3, the attachment portion 28 may be bent along the first short side 21.

[0020] The protective sheet 40 is preferably a thin glass sheet, and preferably has the same shape as the display screen 500 in order to be attached to the display screen 500. The protective sheet 40 of the present embodiment has a substantially rectangular shape with rounded corners. That is, the protective sheet 40 has a first protective short side 41 that is a short side, a second protective short side 42 at a position facing the first protective short side 41, a first protective long side 43 that is a long side orthogonal to them, and a second protective long side 44 at a position facing the first protective long side 43, and has a substantially rectangular shape with four rounded corner portions 46 having a rounded corner shape.

[0021] Also, as described above, the back surface 51 of the protective sheet 40 has an adhesive portion 30 for attaching to the display screen 500, and a release sheet 60 is detachably attached to protect the adhesive portion 30. Also, the release sheet 60 has substantially the same shape as the protective sheet 40 except for a release attachment portion 68 described later. Therefore, the release sheet 60 has a first release short side 61 that is a short side, a second release short side 62 at a position facing the first release short side 61, a first release long side 63 that is a long side orthogonal to them, and a second release long side 64 at a position facing the first release long side 63, and has a substantially rectangular shape with four release rounded corner portions 66 having a rounded corner shape. The above-described release attachment portion 68 has a rectangular shape and is attached so as to protrude from the first release short side 61, and they are integrated. Note that, as shown in FIG. 3, the release attachment portion 68 may be bent along the first release short side 61.

[0022] The protective sheet 40 is preferably made of single glass, or preferably an integral structure of glass and a PET (polyethylene terephthalate) frame arranged to surround the glass. Further, the protective sheet 40 is preferably a laminated structure of chemically strengthened glass and an anti-scattering PET film. Also, the adhesive portion 30 preferably has a silicon adsorption layer applied thereto. The release sheet 60 is preferably thin so as to be easily peeled off. For example, the thickness of the release sheet 60 is preferably about 0.05 millimeters. Also, the thickness of the protective sheet portion 40 is preferably around 0.5 millimeters.

[0023] Also, the back surface 71 of the dust removal sheet portion 20 has an adhesive portion 72 for temporarily attaching to the display screen 500, and a second release sheet 90 is detachably attached thereto.

[0024] The dust removal sheet portion 20 has a dust removal release sheet 90. The dust removal release sheet 90 is detachably attached to protect the adhesive portion 72 on the back surface 71 of the dust removal sheet portion 20. Also, the dust removal release sheet 90 has substantially the same shape as the dust removal sheet 20. Therefore, the first dust removal release sheet 90 has a first dust removal release short side 91 which is a short side, a second dust removal release short side 92 at a position facing the first dust removal release short side 91, a first dust removal release long side 93 which is a long side orthogonal to them, and a second dust removal release long side 94 at a position facing the first dust removal release long side 93, and has a substantially rectangular shape with four rounded corners 96.

[0025] The dust removal release sheet 90 is substantially parallel to the first dust removal release short side 91 which is a short side, and has a cut-off line 98 for separating a part of the dust removal release sheet 90 in the vicinity of the first dust removal release short side 91.

[0026] The second dust removal release short side 92 has a dust removal release positioning portion 99 which protrudes outward from the second dust removal release short side 92 and has a rectangular shape. The dust removal release positioning portion 99 has a positioning hole portion 99a. This will be described later.

[0027] As described above, the extraction part 80 is strip-shaped and is attached to the dust removal sheet part 20 and the release sheet 60. Specifically, one end part 81 of the extraction part 80 protrudes outward from the first short side 21 of the dust removal sheet part 20 and is attached to the attachment part 28 having a rectangular shape.

[0028] Also, one end part 81 of the extraction part 80 is rectangular and is attached to the release attachment part 68 of the release sheet 60 protruding from the first release short side 61. The other end part 82 of the extraction part 80 has a length protruding outward from the second short side 22 of the dust removal sheet part 20 and serves as a handle. Further, the extraction part 80 has a long hole-shaped groove part 85 at its central part parallel to the longitudinal direction (the direction of each long side part described above). The length of the groove part 85 in the longitudinal direction (the direction of each long side part described above) is preferably 120 millimeters, but is not limited thereto. Note that the extraction part 80 is preferably made of PET (polyethylene terephthalate).

[0029] The positioning sheet 50 is attached to the surface of the protective sheet 40. The positioning sheet 50 is, as the name implies, for positioning the position where the protective sheet part 40 is attached to the display screen 500. The positioning sheet 50 is detachably attached to the protective sheet 40. Also, the positioning sheet 50 is preferably made of PET (polyethylene terephthalate).

[0030] The positioning sheet 50 has a first positioning short side 51 which is a short side, a second positioning short side 52 at a position facing the first positioning short side 51, a first positioning long side 53 which is a long side orthogonal to them, and a positioning rounded part 56 having a rounded-corner shape with a second positioning long side 54 at a position facing the first positioning long side 53, and has a substantially rectangular shape with two of them.

[0031] In addition, the first positioning long side 53 of the positioning sheet 50 is configured to be longer than the first protection long side 43 of the protection sheet 40. Therefore, the entire protection sheet 40 is overlapped and attached so as to occupy a part of the positioning sheet 50.

[0032] In addition, the positioning sheet 50 is configured such that, in a plan view, the length in the longitudinal direction is larger than that of the fixing portion 210 in the main body portion 200 described later. The positioning sheet 50 is made of a synthetic resin, and the positioning sheet 50 is preferably a single PET (polyethylene terephthalate) film. Also, the thickness of the positioning sheet 50 is preferably about 0.2 millimeters.

[0033] In addition, the width of the positioning sheet 50 is preferably the same as the width of the protection sheet 40. First hole portions 51a, 51a are symmetrically arranged on the left and right sides of the first positioning short side 51, and a second hole portion 51b, a third hole portion 51c, and a fourth hole portion 51d are arranged inside thereof, respectively. The first hole portions 51a, 51a are fitted with the second protrusion portions 223c, 223c in the main body portion 200 described later. Also, the second hole portion 51b, the third hole portion 51c, and the fourth hole portion 51d are for engaging with the auxiliary member 400 described later. Thus, the sheet 10 of this embodiment is integrally attached in the order of the positioning sheet 50, the protection sheet 40, the release sheet 60, the pull-out portion 80, the dust removal sheet portion 20, and the dust removal release sheet 90 from above (see FIG. 3). Also, the second positioning portion 57 has a positioning hole 57a. It prevents displacement by engaging with the first protrusion portion 221b in the main body portion 200 described later.

[0034] Next, the main body 200 for fixing the mobile device 600 having the display screen 500 will be described. The main body 200 is made of synthetic resin and is what should be called a case capable of housing the mobile device 600, and a so-called blister case is preferable. Further, the main body 200 has a rectangular shape in plan view. Also, the main body 200 is made of synthetic resin as described above and is integrally molded. Further, the main body 200 has a fixing portion 210 that forms a concave shape following the outer shape of the mobile device 600 in order to dispose and fix the mobile device 600 having the display screen 500. The fixing portion 210 has a wall surface portion 211 so as to be in contact with the mobile device 600. Further, the fixing portion 210 has a bottom surface portion 220 that is in contact with the back surface portion 640 of the mobile device 600 of the mobile device 600. The fixing portion 210 has a planar shape substantially the same as the planar shape of the mobile device 600, and the shape is a rectangular shape with rounded corners. In addition, in side view, it is also preferable that the bottom surface portion 220 is inclined so as to rise in the direction from the front end portion 223 to the rear end portion 221.

[0035] The wall surface portion 211 surrounds the periphery of the bottom surface portion 220 and is arranged to stand upright, and as described above, they constitute the fixing portion 210. Therefore, when attempting to place the mobile device 600 on this fixing portion 210, the wall surface portion 211 is slightly bent so as to be pushed apart by the mobile device 600, and the mobile device 600 is fixed to the main body 200.

[0036] Also, the bottom surface portion 220 literally constitutes the bottom of the main body 200, and the bottom surface portion 220 has a second bottom surface portion 220a that forms a deeper bottom surface. The second bottom surface portion 220a is for avoiding interference with an external camera (not shown) of the mobile device 600 when the external camera of the mobile device 600 protrudes outward from the back surface portion 640 of the mobile device 600.

[0037] This second bottom surface portion 220a has approximately the same width as the bottom surface portion 220, and as shown in the figure, occupies approximately one-fourth of the bottom surface portion 220. This is because the external cameras (not shown) arranged on most mobile devices 600 may be arranged at a position corresponding to this position.

[0038] As described above, the wall portion 211 surrounds the periphery of the bottom portion 220, is gently connected to the bottom portion 220, and is disposed so as to stand upward. In addition, the upper ends of the wall portion 211 are respectively connected to the rear end portion 221 and both side ends 222, and to the front end portion 223. In addition, as described above, the rear end portion 221 and both side ends 222, and to the front end portion 223 are integrally configured so as to be continuous with each other.

[0039] The rear end 221 has a flat surface portion 221a at a position lower in height from the bottom surface portion 220 than both ends thereof, and has a first protrusion 221b having a substantially cylindrical shape standing upward U in the left-right center of the rear end 221. In addition, a second protrusion 221c having a rectangular shape is provided outward from the first protrusion 221b.

[0040] As described above, the first protrusion 221b has a substantially cylindrical shape. The first protrusion 221b engages with the slot-shaped groove 85 in the drawer portion 80. Therefore, the first protrusion 221b restricts the direction in which the drawer portion 80 is drawn out from the front end portion 223 to the rear end portion 221 (the longitudinal direction of each of the long sides described above), so that the drawer portion 80 can be drawn out without tilting.

[0041] The front end 223 has flat front end flat portions 223a, 223a at a position lower in height from the bottom surface portion 220 than both side ends 222, 222, and has a locking portion 223b that protrudes upward U and has a rectangular shape in plan view on a second front end flat portion 223aa that is even lower between the front end flat portions 223a, 223a. The front end flat portions 223a, 223a also have second protrusions 223c, 223c that stand upward U and have a substantially cylindrical shape.

[0042] Also, there may be a case where the container has a lid 360 that is a rectangular lid in a plan view. The lid 360 is disposed so as to cover the main body 200 to prevent dust from entering. The lid 360 has a horizontally elongated opening 370 that is long in the width direction. From this opening 370, the drawer 80 can be pulled out as described below.

[0043] Next, the auxiliary member 400 will be described. The auxiliary member 400 is attached to the positioning sheet 50 to strengthen the positioning function of the main body 200 and the positioning sheet 50. The auxiliary member 400 has an auxiliary member main body 410 that is rectangular in plan view and auxiliary member whisker portions 450, 450 that are curved and resemble Kaiser whiskers and are located on both sides of the auxiliary member main body 410. The auxiliary member main body 410 also has an end portion 411 that is an end portion. The end portion 411 can engage with the locking portion 223b.

[0044] The auxiliary member main body 410 in the auxiliary member 400 has a first auxiliary protrusion 420, a second auxiliary protrusion 430 and a third auxiliary protrusion 440 which respectively fit into the above-mentioned first auxiliary part fitting hole 320, second auxiliary part fitting hole 330 and third auxiliary part fitting hole 340.

[0045] The auxiliary member 400 having the above configuration is attached to the positioning sheet 50. That is, the second hole portion 51b, the third hole portion 51c, and the fourth hole portion 51d in the positioning sheet 50 are arranged so as to fit into the first auxiliary protrusion portion 420, the second auxiliary protrusion portion 430, and the third auxiliary protrusion portion 440, respectively.

[0046] The sheet pasting system 800 may include the main body 200 and the sheet unit 10, and these may be sold as a single unit. The sheet pasting system 800 may further include a lid unit 360.

[0047] Next, the method of using the sheet portion 10 will be described. A method of disposing the mobile device 600 on the main body portion 200 in the sheet attachment system 10 having the above-described configuration and attaching the protective sheet 40 in the sheet 10 to the display screen 500 thereof will be described. Note that the auxiliary member 400 can also be attached to the positioning sheet 50 (see FIG. 7A).

[0048] After disposing the mobile device 600 having the display screen 500 on the fixing portion 210 in the main body portion 200, the positioning sheet 50 in the sheet portion 10 is placed on the main body portion 200 so as to cover the mobile device 600. At this time, the first hole portions 51a, 51a are arranged so as to be fitted into the second protrusion portions 223c, 223c (see FIG. 7B).

[0049] Next, the dust removal release sheet 90 attached to protect the adhesive portion 72 of the dust removal sheet portion 20 is peeled off along the cut line 98, and a part of the dust removal release sheet 90 is removed. Thereby, a part of the adhesive portion 72 is exposed. Note that the dust removal release sheet 90 is preferably a sheet obtained by coating paper with PP (polypropylene).

[0050] Thereafter, the positioning hole portion 99a in the peeling positioning portion 99 is engaged with the first protrusion portion 221b, and a part of the dust removal sheet portion 20 is attached so as to be positioned on the display screen 500. Note that since the first hole portions 51a, 51a are arranged so as to be fitted into the second protrusion portions 123c, 123c (for example, see FIG. 7B), a part of the dust removal sheet portion 20 can be attached without being displaced from the display screen 500.

[0051] After that, lift a part of the dust removal sheet portion 20 to disengage the positioning hole portion 99a from the first protrusion portion 221b, peel off the remaining dust removal release sheet 90, and attach the entire dust removal release sheet 90 to the display screen 500 of the mobile device 600 placed on the main body portion 200. Engage the hole portion 29a of the positioning portion 29 in the dust removal sheet portion 20 with the first protrusion portion 221b. At the same time, the positioning hole 57a and the groove portion 85 are also engaged. In this way, the entire dust removal sheet portion 20 can be attached to the display screen 500 without any misalignment (see Fig. 8). At this time, even if dust adheres to the display screen 500, the dust adheres to the dust removal release sheet 90.

[0052] After that, while engaging the first protrusion portion 221b with the groove portion 85 in the drawer portion 80 of the sheet 10, cover the main body portion 200 with the lid portion 360 and take out the drawer portion 80 from the opening portion 370 of the lid portion 360.

[0053] Next, pull the drawn-out drawer portion 80 from the opening portion 370. At this time, since the first protrusion portion 221b is engaged with the groove portion 85 in the drawer portion 80, the drawer portion 80 can be pulled out along the longitudinal direction of the groove portion 85 (the direction of each of the above-mentioned long side portions) (see Figs. 9 and 10).

[0054] As the drawer portion 80 is pulled out, the dust removal sheet portion 20 and the release sheet 60 attached to the drawer portion 80 are pulled. At this time, the dust removal sheet portion 20 temporarily attached to the display screen 500 is about to be peeled off from the display screen 500. As a result, the dust adhering to the display screen 500 adheres to the dust removal sheet portion 20 and is removed.

[0055] At the same time, the release sheet 60 is about to be peeled off from the protective sheet 40, and the adhesive portion 30 is about to be exposed. Further, when the pulling portion 80 is pulled out, the dust removal sheet portion 20 is completely peeled off from the display screen 500, and at the same time, the adhesive portion 30 on the protective sheet 40 is completely exposed. In a side view, when the bottom surface portion 220 is inclined so as to rise in the direction from the front end portion 223 to the rear end portion 221, the pulling portion 80 is easier to pull out.

[0056] The positioning hole 57a in the positioning sheet 50 engages with the first protrusion portion 221b, and the positioning sheet 50 is pressed to attach the protective sheet 40 to the display screen 500 (see FIG. 11).

[0057] After that, if the positioning sheet 50 is peeled off from the protective sheet 40, only the protective sheet 40 can be attached to the display screen 500 (see FIG. 12). In this way, by peeling off the dust removal sheet portion 20 from the display screen 500 and at the same time attaching the protective sheet 40 to the display screen 500, the dust adhering to the display screen 500 is removed, and the protective sheet 40 is immediately attached to the display screen 500 before the dust adheres. Therefore, the possibility of dust entering between the display screen 500 and the protective sheet 40 can be reduced as much as possible. Further, even when the lid 360 is used, the pulling portion 80 can be pulled out from the opening portion 370 of the lid 360, so that the entry of dust can be further avoided.

Explanation of Reference Numerals

[0058] 10 Sheet 20 Dust removal sheet portion 28 Attachment portion 30 Adhesive portion 40 Protective sheet 50 Positioning sheet 60 Release sheet 68 Release attachment portion 80 Pulling portion 85 Groove portion 90 Dust removal release sheet 91 First peeling short side 98 Cutting line 200 Main body part 221b First protrusion 360 Cover part 370 Opening 500 Display screen 600 Mobile device

Claims

1. An dust removal sheet portion that is temporarily attached to the display screen to remove dust from the display screen, A protective sheet having an adhesive portion for attaching to the display screen, A peelable release sheet attached to the adhesive portion to protect the adhesive portion, A pull-out portion attached to the dust removal sheet portion and the release sheet, The dust removal sheet portion has an attachment portion, and the release sheet has a peel attachment portion, The pull-out portion further has a groove portion in the longitudinal direction, The pull-out portion is attached to the attachment portion and the peel attachment portion, After temporarily attaching the dust removal sheet portion to the display screen, by pulling the pull-out portion, the dust removal sheet portion and the release sheet are simultaneously pulled, removing the dust removal sheet portion temporarily attached to the display screen from the display screen, and removing the release sheet from the adhesive portion, thereby attaching the protective sheet to the display screen.

2. An dust removal sheet portion that is temporarily attached to the display screen to remove dust from the display screen, A protective sheet having an adhesive portion for attaching to the display screen, A peelable release sheet attached to the adhesive portion to protect the adhesive portion, A pull-out portion attached to the dust removal sheet portion and the release sheet, The dust removal sheet portion has an attachment portion, and the release sheet has a peel attachment portion, The dust removal sheet portion has a dust removal release sheet, and the dust removal release sheet has a first dust removal release short side that is a short side, and a cut line for separating a part of the dust removal release sheet in the vicinity of the first dust removal release short side and substantially parallel to the first dust removal release short side, The pull-out portion is attached to the attachment portion and the peel attachment portion, After temporarily attaching the dust removal sheet portion to the display screen, by pulling the pull-out portion, the dust removal sheet portion and the release sheet are simultaneously pulled, removing the dust removal sheet portion temporarily attached to the display screen from the display screen, and removing the release sheet from the adhesive portion, thereby attaching the protective sheet to the display screen.

3. In order to remove dust from the display screen, a dust removal sheet portion temporarily attached to the display screen, a protective sheet having an adhesive portion for attaching to the display screen, a peelable release sheet attached to the adhesive portion to protect the adhesive portion, a pull-out portion attached to the dust removal sheet portion and the release sheet, the dust removal sheet portion has an attachment portion, and the release sheet has a release attachment portion, the pull-out portion further has a groove portion in the longitudinal direction, the dust removal sheet portion has a dust removal release sheet, and the dust removal release sheet has a first dust removal release short side which is a short side, and a cut line for separating a part of the dust removal release sheet near the first dust removal release short side and substantially parallel to the first dust removal release short side, the pull-out portion is attached to the attachment portion and the release attachment portion, After temporarily attaching the dust removal sheet portion to the display screen, by pulling the pull-out portion, the dust removal sheet portion and the release sheet are simultaneously pulled, the dust removal sheet portion temporarily attached to the display screen is removed from the display screen, and the release sheet is removed from the adhesive portion, thereby attaching the protective sheet to the display screen.

4. A main body portion for arranging a mobile device having the display screen, and the sheet according to claim 1, wherein the main body portion further has a first protrusion portion, and the first protrusion portion is a sheet sticking system engaged with the groove portion.

5. The main body portion has a covering lid portion, and the lid portion further has an opening, and the sheet sticking system according to claim 4.

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