WO2006123616A1 - 再剥離可能な保護パネルの実装構造とこれに用いる実装用シート - Google Patents
再剥離可能な保護パネルの実装構造とこれに用いる実装用シート Download PDFInfo
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- WO2006123616A1 WO2006123616A1 PCT/JP2006/309668 JP2006309668W WO2006123616A1 WO 2006123616 A1 WO2006123616 A1 WO 2006123616A1 JP 2006309668 W JP2006309668 W JP 2006309668W WO 2006123616 A1 WO2006123616 A1 WO 2006123616A1
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- Prior art keywords
- sheet
- transparent
- protective panel
- display
- mounting
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133311—Environmental protection, e.g. against dust or humidity
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
- G06F1/1607—Arrangements to support accessories mechanically attached to the display housing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/50—Protective arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
- G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
- G06F2200/163—Indexing scheme relating to constructional details of the computer
- G06F2200/1633—Protecting arrangement for the entire housing of the computer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2848—Three or more layers
Definitions
- the present invention relates to a removable protective panel mounting structure and a mounting sheet used therefor, in which a protective panel used for an electronic device display window is removably mounted on a display.
- a casing in an electronic device such as a mobile phone or a smartphone is generally a flat casing formed by combining a front case 107 and a rear case 109 made of synthetic resin, and a liquid crystal display window is provided on the surface of the front case 107.
- a protective panel 101 is fitted to protect the battery (see FIG. 8).
- the protective panel 101 in order to solve the problem that the liquid crystal display becomes extremely visible in a bright room or outdoors due to reflection, the protective panel 101 is a combination of a ⁇ 4 plate, a polarizing plate, and a transparent protective plate. Is disclosed. It is also disclosed that the transparent protective plate is used as a touch panel, or that an additional function is imparted to the outermost surface of the protective panel 101 by bonding a hard coat film or a low reflection film. Recently, along with the fashion of electronic devices, the protective panel 101 has been decorated with a border as shown in FIG. 8 by printing.
- the protective panel 101 is supported and fixed at the periphery of the opening 107c of the front case 107, while the display 106 is placed on the upper surface of the circuit board 108 installed inside the front case 107 and the rear case 109. Since it is attached, the back surface of the protective panel 101 and the surface of the display 106 have a distance of about 0.1 to 3 mm. For this reason, mounting the protective panel 101 on the display 106 having the liquid crystal display window eliminates the air layer by bonding them together in the visual recognition area of the display 106 from the viewpoint of antireflection effect. I like to do it!
- the above bonding of the protective panel 101 and the display 106 is acrylic. If only a transparent adhesive layer such as an adhesive is used, the protective panel 101 is peeled off and mounted again for reasons such as contamination and misalignment during mounting (hereinafter referred to as ⁇ repair ''). There was a problem. That is, when the protective panel 101 is peeled off, the transparent adhesive layer is equally firmly adhered to both the protective panel 101 side and the display 106 side, so that the transparent adhesive layer is separated in the layer. It may be left on the protective panel 101 side or the display 106 side, or a part of the transparent adhesive layer may be stretched and the film thickness may become uneven, making repair difficult. Or it was impossible.
- Patent Document 2 discloses a single-sided release sheet 103. It is disclosed that the touch panel of an example of the protection panel 101 is mounted on the display 106 using the above. That is, a core material of a plastic film, an acrylic adhesive layer laminated on one surface of the core material, a primer-treated surface formed by applying a primer treatment to the other surface of the core material, A transparent mounting sheet (single-sided re-peeling sheet 103) comprising a silicone rubber sheet laminated on the primer-treated surface to form a re-peelable surface, and an acrylic adhesive for the mounting sheet.
- the adhesive surface on the layer side is adhered to the back surface of the transparent touch panel as an example of the protective panel 101, the adhesive surface on the silicone rubber sheet side of the mounting sheet is adhered to the surface of the display 106, and the above touch panel is attached to the surface of the display 106. Mounted on the surface so that it can be peeled off again.
- This mounting sheet (single-sided re-peeling sheet 103) is usually peeled cleanly on the silicone rubber sheet side during repair, and the mounting sheet is difficult to separate.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-72214
- Patent Document 2 Japanese Patent Laid-Open No. 2003-150316
- the distance between the back surface of the protective panel 101 and the surface of the display 106 is not as designed, and an error is likely to occur.
- the single-sided re-peeling sheet 103 described in Patent Document 2 has poor cushioning properties.
- the front surface of the protection panel 101 may protrude from the front case 107 (see FIGS. 6A and 6B) or may be deformed into a convex shape. To do.
- the distance between the back surface of the protective panel 101 and the surface of the display 106 is larger than the design, floating occurs without being adhered to the re-peeling surface of the single-sided re-peeling sheet 103 (see FIGS. 7A and 7B). .
- the object of the present invention is to solve the above-described problems, absorb the error in the distance between the back surface of the protection panel and the surface of the display during assembly, and without special equipment.
- the object is to provide a mounting structure of a releasable protective panel that can be bonded without bubbles and a mounting sheet used therefor.
- the present invention is configured as follows.
- the core material of the plastic film and the primer processing surface formed by applying a primer treatment to one surface of the core material
- a silicone rubber sheet or urethane rubber sheet that can be in contact with any one of the protective panel and display of the electronic device display window, and an acrylic pressure-sensitive adhesive layer that is sequentially laminated on the other surface of the core material.
- a transparent mounting sheet comprising a single-sided re-peeling sheet constituted of the above and a gel sheet having at least one surface bonded to the acrylic pressure-sensitive adhesive layer.
- the single-sided re-peeling sheet is bonded only to the one surface of the gel sheet, and a new acrylic adhesive is applied to the other surface of the gel sheet.
- the transparent mounting sheet according to the first aspect in which the agent layer is laminated is provided.
- the first or second aspect in which the peel strength of one outermost surface is higher than the peel strength of the other outermost surface.
- the transparent mounting sheet according to any one of the first to third aspects, wherein the core material has a thickness of 12 ⁇ m or more.
- any of the first to third caps 1 in which the thickness of the silicone rubber sheet or the urethane rubber sheet constituting the re-peeling surface of the mounting sheet is 20 to 100 m 1.
- a transparent mounting sheet according to one aspect is provided.
- the transparent mounting sheet according to any one of the first to third aspects, wherein the acrylic pressure-sensitive adhesive layer has a thickness of 10 m or more.
- the protective panel of the electronic device display window is peeled off again on the surface of the display via the transparent mounting sheet according to any one of the first to sixth aspects.
- a mounting structure for a releasable protective panel that is detachably mounted.
- the protective panel for the electronic device display window is removably mounted on the surface of the display through a transparent mounting sheet in which a gel sheet with excellent cushioning properties is added to the single-sided re-peeling sheet.
- a gel sheet with excellent cushioning properties is added to the single-sided re-peeling sheet.
- FIG. 1 is a cross-sectional view showing a mounting structure of a releasable protective panel according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view showing a mounting structure of a releasable protective panel according to a second embodiment of the present invention
- FIG. 3 is a cross-sectional view showing a mounting structure of a releasable protective panel according to a third embodiment of the present invention.
- FIG. 4 is a schematic diagram showing a relationship between a protection panel of an electronic device display window and a display in the embodiment of the present invention
- FIG. 5 is a schematic view showing a relationship between a protective panel of another electronic device display window and a display in the embodiment of the present invention
- FIG. 6A is a cross-sectional view of a conventional electronic device in which a protection panel for an electronic device display window and a display are assembled to explain the problems of the prior art.
- FIG. 6B is an enlarged sectional view of a portion surrounded by a circle 6B in FIG. 6A.
- FIG. 7A is a cross-sectional view of a conventional electronic device in which a protection panel of an electronic device display window and a display are assembled to explain another problem of the prior art
- FIG. 7B is an enlarged cross-sectional view of a portion surrounded by a circle 7B in FIG. 7A.
- FIG. 8 is a schematic diagram showing the relationship between a protective panel of a conventional electronic device display window and a display.
- FIG. 9 is a cross-sectional view showing the mounting structure when the protective panel of the releasable protective panel mounting structure according to the first embodiment of the present invention is a transparent touch panel
- FIG. 10 is a cross-sectional view showing a mounting structure of a releasable protective panel that is effective in the fourth embodiment of the present invention.
- FIG. 11 shows a mounting structure of a releasable protective panel according to the fifth embodiment of the present invention. It is sectional drawing which shows structure,
- FIG. 12 is a cross-sectional view showing a removable protective panel mounting structure using a urethane rubber sheet in FIG. 9 instead of the silicone rubber sheet.
- FIG. 13 is a cross-sectional view of an example of a protective panel mounting structure in which a detachable protective panel and a display according to any of the first to fifth embodiments of the present invention are assembled.
- FIG. 14 is another example of a protective panel mounting structure in which a detachable protective panel and a display according to any one of the first to fifth embodiments of the present invention are assembled. Is a cross-sectional view of
- FIG. 15 shows a mounting structure of a protective panel in which a detachable protective panel and a display according to any one of the first to fifth embodiments of the present invention are assembled. It is sectional drawing of another example.
- FIG. 1 is a cross-sectional view showing a mounting structure of a releasable protective panel according to the first embodiment of the present invention.
- 1 is a transparent protective panel
- 2 is a transparent mounting sheet
- 3 is a transparent single-sided release sheet
- 3a is a transparent core
- 3b is a primer-treated surface
- 3c is a transparent silicon rubber sheet
- 3d is Transparent acrylic adhesive layer
- 4 shows transparent gel sheet
- a transparent touch panel 1A as a specific example of the protective panel 1 for an electronic device display window includes, for example, a plate-shaped protective panel main body 1 lc formed with a transparent lower electrode lid on its upper surface, as shown in FIG.
- the protective panel body 11c and the transparent resin film 11a are arranged on the periphery of the electrode 1 lb and 1 Id through the air layer 1 lg with the upper electrode 1 lb and the lower electrode 1 Id facing each other. ⁇ Adhesive with 1 lj double sided tape The film is configured so that the film 1 le is bonded to the upper surface of the transparent resin film 1 la with a transparent adhesive 1 If.
- Each of the protective panel body 11c and the transparent resin film 11a is provided with a circuit having a predetermined pattern such as a bus bar or a lead wire on the same surface as the transparent lower electrode l id and the transparent upper electrode l ib. Is output to the outside from the side of the transparent touch panel 1A.
- the transparent window la of the decorative layer 1 lh is composed of a transparent adhesive 1 If that bonds the transparent resin cover film 1 le to the upper surface of the transparent resin film 1 la.
- the dot spacer 11m causes a gap between the transparent upper electrode l ib and the transparent lower electrode l id.
- the material of the protective panel body 1 lc a material that has excellent transparency and can protect a display such as a liquid crystal panel or an organic EL panel from being damaged is used.
- a material that has excellent transparency and can protect a display such as a liquid crystal panel or an organic EL panel from being damaged examples thereof include general-purpose resins such as polystyrene resin, polyolefin resin, ABS resin, AS resin, acrylic resin, and AN resin. Further, general-purpose engineering resin or super engineering resin may be used.
- the protective panel body 11c may form the transparent lower electrode 1 Id through a transparent resin film directly disposed on the upper surface of the protective panel body 11c, separately from the transparent resin film 11a. .
- the thickness of the protective panel body 1 lc is preferably about 0.4 mm or more.
- engineering plastics such as polycarbonate, polyamide, polyether ketone, acrylic resin, polyethylene terephthalate, or polybutylene terephthalate, etc. Use.
- the transparent lower electrode l id and the transparent upper electrode l ib are each made of a transparent conductive film.
- Transparent conductive film materials include tin oxide, indium oxide, antimony oxide, dumbbell, cadmium oxide, and metal oxides such as ITO, gold, silver, copper, tin, nickel, aluminum, There is a metal such as palladium or a thin film of a conductive polymer.
- the protective panel main body and the transparent coating are formed by using a vacuum deposition method, sputtering, ion plating, a CVD method, or a roll coater method. After the conductive film is formed on the entire surface of the oil film, unnecessary portions are removed by etching.
- a metal such as gold, silver, copper, or nickel, or a conductive paste such as carbon is used.
- these forming methods include screen printing, offset printing, gravure printing, flexographic printing, and other printing methods, a photoresist method, and a brush coating method.
- the end of the film connector is inserted between the protective panel body 1 lc and the transparent resin film 1 la and connected to the output end of the circuit by thermocompression bonding.
- the film connector can be easily turned to the back.
- the material of the transparent resin cover film l ie is the same as that of the transparent resin film 11a, such as engineering plastics such as polycarbonate, polyamide, and polyetherketone, acrylic, polyethylene terephthalate, or poly Use a resin film such as butylene terephthalate.
- At least one surface of the transparent resin cover film l ie is provided with a decorative layer 1 lh having a transparent window la, and the upper surface side of the transparent resin film 1 la on which a transparent upper electrode 1 lb is formed To be located.
- the part covered with the decorative layer l lh becomes the decorative part lb of the protective panel 1, and the part not covered with the caro decorative layer 1 lh becomes the transparent window la (see FIG. 4).
- the decorative layer l lh is usually formed as a printed layer in the protective panel 1.
- the materials of the printing layer include polysalt resin resin, polyamide resin, polyester resin, polyacrylic resin, polyurethane resin, polybulassetal resin, and polyester urethane resin. It is preferable to use a colored ink containing an appropriate color pigment or dye as a colorant, and a fat, cellulose ester-based resin or alkyd resin.
- a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used.
- the print layer may be provided entirely or partially depending on the decoration that is desired to be expressed.
- the decorative layer l lh may be a layer composed of a metal thin film layer or a layer composed of a combination of a printed layer and a metal thin film layer.
- the metal thin film layer is for expressing the metal glaze as the decorative layer l lh and is formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method or the like. In this case, depending on the metallic luster color you want to express, Use a metal such as aluminum, nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, or zinc, or an alloy or compound thereof.
- the metal thin film layer is usually formed partially.
- a front anchor layer or a rear anchor layer may be provided in order to improve adhesion with other layers.
- the decorative layer l lh can be formed on any surface of the transparent resin cover film l ie, but if it is formed on the lower surface, the transparent resin cover film l ie wears by pressing with a finger or a pen. You are protected.
- the touch panel 1A as an example of the protection panel 1 has been described with respect to the configuration having the touch input function on the front surface of the protection panel main body 11c.
- the protection panel 1 has the configuration having the touch input function described above. It is possible to use other known protective panels (for example, a panel that only works with a single transparent resin plate or transparent glass plate).
- the protective panel 71 may constitute a part of the front case 7 as shown in FIG. That is, instead of molding the protective panel 1 and the front case 7 separately and then fitting the protective panel 1 into the front case 7, the protective panel 71 and the front case 7 are integrally molded. May be.
- the display 6 is a portable electronic device such as a mobile phone, a smart phone, a portable game device, a sub-notebook computer, a PDA (personal 'digital' assistant), a car navigation device, a digital power camera, a video camera, and a commercial communication device.
- a display of an input device of an electronic device such as a monitor of a personal computer or a monitor of a personal computer (more specifically, a display such as an LCD (Liquid Crystal Display) or an organic ELD).
- a transparent plastic film core material 3a and one surface of the core material 3a are subjected to primer treatment.
- the single-sided re-peeling sheet 3 is configured.
- at least one surface of the gel sheet 4 is bonded to the acrylic adhesive layer 3d of the single-sided release sheet 3 to constitute a transparent mounting sheet 2.
- the other surface of the gel sheet 4 constitutes an adhesive surface on the transparent touch panel side.
- the gel sheet 4 of the transparent mounting sheet 2 configured in this way is applied to the back surface of the protective panel 1 (in this first embodiment, in other words, the surface on the display 6 side of the protective panel 1 (the lower surface in FIG. 1)).
- the protective panel 1 is attached to the surface of the display 6 so that the silicone rubber sheet 3c of the single-sided release sheet 3 of the mounting sheet 2 is in contact with the entire surface of the display 6.
- the mounting structure is configured by mounting with the mounting sheet 2.
- the plastic film serving as the core material 3a supports the acrylic pressure-sensitive adhesive layer 3d and the silicone rubber sheet 3c.
- a primer-treated surface 3b on the other surface of the plastic film it is firmly bonded to the silicone rubber sheet 3c, and a large-sized panel (for example, 500 mm) having a large number of transparent touch panels 1A.
- the above-mentioned mounting sheet 2 is provided on the back surface of the transparent touch panel 1 A (100 mm X 100 mm transparent touch panel 1 A) that is punched with each transparent touch panel 1 A, the primer-treated surface Since the core material 3a has the core material 3a, the core material 3a is firmly bonded to the silicone rubber sheet 3c.
- the silicone rubber sheet 3c of the mounting sheet 2 is formed from the periphery of each transparent touch panel 1A obtained by punching. It can be suppressed so that it does not protrude.
- the core material 3a has excellent transparency so as not to deteriorate the visibility of the display 6, and has a total light transmittance of 88% or more (JIS—K7105—1981). ) And a haze value of 3% or less (JIS-K7105-1981) is preferred.
- a transparent and optically isotropic film such as PET (polyethylene terephthalate), PC (polycarbonate), TAC (triacetyl cellulose), PES (polyester sulfone), or the like is used. I can do it.
- the thickness of the plastic film used as the core material 3a is preferably 12 m or more. If the thickness is less than 12 m, it is difficult to control the uniform thickness by undulating the core material 3a when forming the coating film, so the surface on the outside of the silicone rubber sheet 3c (in this first embodiment, in other words, The surface of the protective panel 1 on the display 6 side becomes uneven, and air is trapped when the transparent touch panel 1 is mounted, and bubbles are easily generated.
- the thickness of the plastic film used as the core material 3a is preferably 75 m or less.
- the suppleness is impaired when the thickness of the core material 3a exceeds 75 m. This is because G 3 does not fit the gel sheet 4.
- the thickness of the core material 3a is 38 ⁇ m.
- the primer treatment generally means a treatment such as applying an intermediate agent having a good compatibility to both of the base material and the coating agent in order to increase the adhesiveness.
- it refers to easy adhesion treatment, which includes increasing the surface area by increasing the surface area of the base material to increase adhesion, and surface modification by corona treatment to improve adhesion.
- the silicone rubber sheet 3c is firmly bonded to the core material 3a by the primer treatment, and the core material 3a and the silicone rubber are removed when the transparent touch panel 1A is peeled off. This is to prevent the silicone rubber sheet 3c from protruding from the transparent touch panel 1A due to separation from the sheet 3c or a shift between the core material 3a and the silicone rubber sheet 3c during the above punching. is there.
- the acrylic pressure-sensitive adhesive layer 3d is obtained by applying a pressure-sensitive adhesive generally used for pressure-sensitive adhesive tapes, etc., and is perpendicular to the gel sheet 4 formation surface of the acrylic pressure-sensitive adhesive layer 3d.
- the single-sided re-peelable sheet 3 and the acrylic adhesive layer 3d so as to be turned from the end that is strong against the pulling force acting on the surface and the lateral displacement force along the formation surface of the acrylic adhesive layer 3d. Force to separate the gel sheet 4 to which the single-sided re-peelable sheet 3 is adhered by Even if the single-sided re-peeling sheet 3 is not easily separated, the gel sheet 4 is not separated.
- the thickness of the acrylic pressure-sensitive adhesive layer 3d is preferably in the range of 10 ⁇ m or more. When the acrylic pressure-sensitive adhesive layer 3d has a thickness of less than 10 / zm, even if the acrylic pressure-sensitive adhesive layer 3d is attached to the gel sheet 4, a portion that is lifted up without being bonded is generated.
- the thickness of the acrylic pressure-sensitive adhesive layer 3d is preferably in the range of 10-50 / ⁇ ⁇ . If the thickness is less than 10 m, the adhesive strength becomes weak, and it becomes possible to control whether the mounting sheet 2 remains on the transparent touch panel 1A side or the display 6 side during repair.
- the adhesive strength becomes too strong, and defoaming treatment for bubbles generated or generated between the gel sheet 4 and the mounting sheet 2 during the production of the mounting sheet 2, for example, the mounting sheet 2 Even if a pressure is applied to gradually expel the bubbles from the end with a roller or the like while applying an R-bend to the tube, or if it is placed in a reduced-pressure atmosphere, the bubbles will escape.
- the silicone rubber sheet 3c is separated from the adherend by a pulling force acting in a direction perpendicular to the silicone rubber sheet placement surface (primer treatment surface 3b) and a lateral displacement along the placement surface.
- the mounting sheet 2 can be easily attached to the mounting sheet 2 by applying a force to separate the mounting sheet 2 and the adherend to which the mounting sheet 2 is adhered by the silicone rubber sheet 3c so as to be turned from the end. It is easy to separate from the kimono.
- a silicone rubber sheet used as a shock absorber or the like can be used as a shock absorber or the like can be used.
- the silicone rubber sheet 3c for example, a mixture of silicone rubber and silicone resin that is ink-coated with a solvent and cross-linked by heat during drying can be used.
- the thickness of the silicone rubber sheet 3c constituting the re-peeling surface of the mounting sheet is preferably in the range of 20 to 100 ⁇ m.
- the thickness of the silicone rubber sheet 3c exceeds 100 ⁇ m, the adhesive strength becomes too strong, and when the protective panel 1 is peeled off, the surface of the mounting sheet 2 on the side of the silicone rubber sheet 3c becomes detached.
- the thickness of the silicone rubber sheet 3c is less than 20 / zm, even if it adheres to an adherend such as the display 6, there are places where it floats up without being adhered, and excessively (that is, more than necessary). ) Easy to peel I'll get stuck.
- the gel sheet 4 imparts cushioning properties to the mounting sheet 2.
- the gel sheet 4 can be obtained by forming a transparent polymer adhesive into a gel sheet.
- the polymer adhesive include urethane, acrylic, and natural polymer material. Note that the gel sheet 4 does not have to worry about the gel sheet 4 being peeled off from the protective panel 1 under normal use after mounting.
- the gel sheet 4 composed of a polymer adhesive also serves as a shock absorber due to the elasticity inherent in the gel, and also serves to protect various impact and deformation force displays 6.
- the protective panel 1 of the electronic device display window is removably mounted on the surface of the display 6, the gel sheet 4 is configured to have a size that can be compressed by the amount of the gel sheet 4 force.
- the gel sheet 4 has a function of absorbing the error.
- the upper limit of the thickness of the gel sheet 4 can be arbitrarily determined according to the use, but it is appropriate to set it to 10 mm in consideration of actual use conditions.
- the lower limit of the thickness of the gel sheet 4 is preferably 0.2 mm.
- the lower limit of the thickness of the existing gel sheet 4 is 0.2 mm, and the gel sheet with a thickness of less than 0.2 mm will not only have cushioning properties but also tend to cause tearing due to its thinness. This is not preferable because it is difficult to assemble.
- the gel sheet 4 when the gel sheet 4 is compressed and protrudes in the lateral direction in order to absorb the error in the design distance, it is necessary to form a space around the gel sheet 4 to allow the amount of protrusion.
- a space it is desirable that a space having a gap G of 50% or more of the thickness of the gel sheet 4 in a direction orthogonal to the thickness of the gel sheet 4 is formed all around the gel sheet 4 (for example, the gel sheet 4 When the thickness is 10 mm, it is desirable to form a gap G of 5 mm or more around the entire circumference of the gel sheet 4).
- the protruding portion is accommodated within the thickness of the gel sheet 4 and does not reach the adjacent layer of the gel sheet 4.
- the visibility of 6 can surely prevent adverse effects on the input operability of the touch panel 1A.
- the gel sheet 4 is compressed and does not come out in the lateral direction, and the thickness of the gel sheet 4 increases locally. Then, the thickness of the gel sheet 4 becomes uneven, and the visibility of the display 6 may adversely affect the input operability of the touch panel 1A.
- the protruding part that protrudes laterally from the gel sheet 4 wraps around the layer adjacent to the gel sheet 4 and enters the visual recognition area of the display 6, and the visibility of the display 6 is the input operability of the touch panel 1A, etc. May also adversely affect In order to surely prevent such a problem, as described above, a gap having a gap G of 50% or more of the thickness of the gel sheet 4 should be formed all around the gel sheet 4!
- FIG. 5 is a cross-sectional view of three examples of a protective panel mounting structure in which a protective panel and a display 6 are assembled.
- FIG. 13 shows an example in which the space is formed between the mounting sheet 2 and the front case 7. That is, in FIG. 13, the protective panel 1 (or touch panel 1A) and the mounting sheet 2 have substantially the same shape and the same size, and are protected by the transparent window portion opening forming portion 7a of the front case 7. Cover the periphery of the surface of panel 1 (or touch panel 1A) and between the inner wall 7b of the front case body near the transparent window forming opening 7a and the outer surface of the gel sheet 4 of the mounting sheet 2 The gel sheet protruding space 50 having the gap G is formed.
- FIG. 14 shows that the space is formed in the mounting sheet 2 itself (in other words, in order to form the space in the mounting sheet 2, the protection sheet 1 (or the touch panel 1 A) is used to mount the mounting sheet 2. Is made small). That is, in FIG. 14, the mounting sheet 2 is smaller than the protective panel 1 (or touch panel 1A), and the protective panel 1 (or Covering the periphery of the surface of the touch panel 1A) and between the inner surface 7b of the front case body near the transparent window forming opening 7a and the outer surface of the gel sheet 4 of the mounting sheet 2 and the protective panel 1 (or Touch panel 1 A space between A) and the display 6 is formed, and a gel sheet protruding space 50 having the above-mentioned gap G is formed.
- FIG. 15 shows an example in which the space is formed between the mounting sheet 2 and the front case 7 when the protective panel 1 (or the touch panel 1A) and the front case 7 are flush with each other. is there. That is, in FIG. 15, the mounting sheet 2 is smaller than the protective panel 1 (or the touch panel 1A), and the protective panel 1 is located in the transparent window forming opening forming portion 7d of the front case 7. (Or the touch panel 1A) is fitted (or the protective panel 71 and the front case 7 are integrally molded), and the protective panel 1, 71 (or the touch panel 1A) and the front case 7 surface are connected. It is the same.
- the gel sheet protruding space 50 is formed with the gap G described above.
- the size of the mounting sheet 2 is the viewing area of the display 6 ( If it is larger than the visible region, there is no problem.
- the peel strength of one outermost surface is higher than the peel strength of the other outermost surface.
- the mounting sheet 2 can be peeled off always on the same side of the mounting sheet 2.
- the peel strength of the outer surface of the gel sheet 4 is higher than the peel strength of the outer surface of the silicone rubber sheet 3c, the gel rubber 4 can always be peeled between the silicone rubber sheet 3c and the display 6.
- the peel strength of the outer surface of the silicone rubber sheet 3c is higher than the peel strength of the outer surface of the gel sheet 4
- the gel sheet 4 and the protective panel 1 can always be peeled.
- the coating agent during the primer treatment the application of the acrylic adhesive during the formation of the acrylic adhesive layer 3d, the formation of the silicone rubber sheet 3c
- a general coating method such as a gravure coating method, a reverse coating method, a comma coating method or a die coating method is used.
- the mounting sheet 2 is usually the gel sheet 4 Since the peel strength of the outer surface of the silicone rubber sheet 3c is higher than the peel strength of the outer surface of the silicone rubber sheet 3c, the silicone rubber sheet 3c is cleanly peeled off from the display 6, and a part of the mounting sheet 2 is transferred to the display 6, Mounting sheet 2 is difficult to separate.
- the protective panel 1 for an electronic device display window is provided via the transparent mounting sheet 2 in which the gel sheet 4 having excellent cushioning properties is added to the single-sided release sheet 3. Since it is removably mounted on the surface of the display 6, the mounting sheet 2 is thicker than the design distance between the back of the protective panel 1 and the surface of the display 6 in consideration of the compression space of the gel sheet 4 in advance.
- the distance between the back of the protective panel 1 and the surface of the display 6 during assembly is a negative error (if V ⁇ shorter than the design distance) or a positive error (design The error can be absorbed by the gel sheet 4 in order to generate a case longer than the distance! Therefore, the front surface of the protective panel 1 does not protrude from the front case 7 or is deformed into a convex shape, and is not adhered to the re-peeling surface of the mounting sheet 2 so that no floating occurs.
- the single-sided re-peeling sheet 3 is provided with the protective panel 1 for the electronic device display window via the transparent mounting sheet 2 to which the gel sheet 4 having excellent cushioning properties is added. Is mounted on the surface of the display 6 so that it can be peeled off again. Pressure can be applied to expel it, and even without special equipment, there are no bubbles!
- the mounting structure of the releasable protective panel of the second embodiment of the present invention shown in FIG. 2 is replaced with both surfaces of the gel sheet 4 instead of the transparent mounting sheet 2 of the first embodiment.
- the single-sided re-peeling sheet 3 (that is, the first single-sided re-peeling sheet 3-1 and the second single-sided re-peeling sheet 3-2) is bonded together, and the transparent mounting sheet 2 A is used. .
- the mounting structure is such that the first one-sided re-peeling sheet 3-1 of the mounting sheet 2A is covered with the silicone rubber sheet 3c of the protective panel 1 (in this second embodiment, in other words, the display of the protective panel 1 The entire view area on the 6th side (underside of protection panel 1 in Fig. 2)
- the protective panel 1 provided with the mounting sheet 2A is attached to the display so that the silicone rubber sheet 3c of the other second one-sided re-peeling sheet 3-2 is in contact with the entire surface of the display 6.
- 6 is a structure mounted on the surface.
- the outer surface of the two silicone rubber sheets 3c which are the outermost surfaces of the two single-sided re-peeling sheets 3-1, 3-2, is not required to have the same peel strength.
- peel strength of the outer surface of the sheet 3c is higher than the peel strength of the other silicone rubber sheet 3c, it will always be the same side of the mounting sheet 2A (that is, the silicone rubber on the side with the weaker peel strength). Peeling can be performed on the outer surface side of the sheet 3c).
- the mounting structure of the releasable protective panel 1 of the third embodiment of the present invention shown in FIG. 3 is the same as that of the gel sheet 4 described above, instead of the transparent mounting sheet 2 of the first embodiment.
- a transparent mounting sheet 2B in which an acrylic pressure-sensitive adhesive layer 5 is further laminated on the surface where the single-sided release sheet 3 is not bonded is used.
- the acrylic adhesive layer 5 of the mounting sheet 2B is placed on the back surface of the protective panel 1 (in this third embodiment, in other words, the surface on the display 6 side of the protective panel 1 (the protective panel 1 in FIG. 3).
- the protective panel 1 provided with the mounting sheet 2B is attached so that the silicone rubber sheet 3c of the mounting sheet 2B is in contact with the entire surface of the display 6.
- the structure is mounted on the surface of the display 6.
- the mounting sheet 2 which is applied to the first embodiment of the present invention is arranged upside down from FIG.
- the silicone rubber sheet 3c can be used as an adhesive surface on the protective panel 1 side
- the gel sheet 4 can be used as an adhesive surface on the display 6 side. That is, the transparent mounting sheet 2C gel sheet 4 is adhered to the surface of the display 6, and the mounting sheet 2C on the display 6 is bonded.
- the protective panel 1 may be mounted on the surface of the silicone rubber sheet 3c.
- a mounting sheet 2B that works according to the third embodiment of the present invention is arranged upside down from FIG.
- the silicone rubber sheet 3c can be used as an adhesive surface on the protective panel 1 side
- the acrylic pressure-sensitive adhesive layer 5 can be used as an adhesive surface on the display 6 side. That is, the transparent mounting sheet 2D acrylic adhesive layer 5 of the transparent mounting sheet 2 is bonded to the surface of the display 6, and the protective panel 1 is bonded to the silicone rubber sheet 3c which is the surface of the mounting sheet 2D on the display 6 It may be implemented so that it does.
- the mounting sheet 2E can be configured by using the urethane rubber sheet 13c instead of the silicone rubber sheet 3c.
- the mounting sheet 2E can be configured using a urethane rubber sheet 13c instead of the silicone rubber sheet 3c.
- the mounting sheet using urethane rubber sheet 13c is not different from the mounting sheet using silicone rubber sheet 3c as the drawing, so as a representative, only when urethane rubber sheet 13c is applied to Fig. 9 as shown in Fig. 12. Illustrate.
- the silicone rubber sheet 3c may be read as the urethane rubber sheet 13c.
- the urethane rubber sheet 13c is strong against the pulling force acting in the direction perpendicular to the urethane rubber sheet placement surface (primer-treated surface 3b) and the lateral displacement force along the placement surface. However, if the force that separates the mounting sheet 2 and the adherend to which the mounting sheet 2 is bonded by the urethane rubber sheet 13c is applied so as to be turned from the end, the mounting sheet 2 and the adherend are easily separated. Is easy to separate.
- a material of the urethane rubber sheet 13c a polyurethane rubber sheet used as a shock absorber or the like can be used.
- urethane rubber sheet 13c for example, polyol and isocyanate are the main raw materials, and by changing the types and mixing ratios of other raw materials, cushioning properties, heat insulation properties, sealing properties, impact resistance, etc.
- a polyurethane-based sheet having various functions can be obtained.
- Example 1 Using a transparent polyester film with a thickness of 38 ⁇ m as the core material, first, surface modification is performed by corona discharge on one side, and a silicone rubber sheet with a thickness of 40 ⁇ m is laminated on the coater. Then, a polyester film subjected to release treatment was laminated as a separator on the surface. Next, an acrylic adhesive layer with a thickness of 30 / zm is laminated on the other side of the core material with a coater, and a polyester film that has been subjected to a release treatment is laminated on the surface as a separator, and separators are provided on both sides. A transparent single-sided release sheet was obtained.
- a commercially available gel sheet having a transparent urethane-based polymer pressure-sensitive adhesive in a lmm-thick gel and having separators on both sides was prepared.
- Example 2 Prepare two single-sided re-peeling sheets and one gel sheet as in Example 1, peel off one separator of the gel sheet, and peel the separator on the acrylic adhesive layer side of the first single-sided re-peeling sheet And pasted both together.
- the other separator of the gel sheet was peeled off, and the second router on the acrylic adhesive layer side of the single-sided re-peeling sheet was peeled off and bonded together to obtain a mounting sheet.
- Example 2 Prepare a single-sided re-peeling sheet and gel sheet one by one as in Example 1, peel off one separator of the gel sheet, and peel off the separator on the acrylic adhesive layer side of the single-sided re-peeling sheet. Pasted together.
- the other separator of the gel sheet The separator was peeled off, and an acrylic pressure-sensitive adhesive layer having a thickness of 30 m was laminated thereon with a coater, and a polyester film subjected to a release treatment was laminated on the surface as a separator to obtain a mounting sheet.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US11/920,441 US20090087655A1 (en) | 2005-05-16 | 2006-05-15 | Mounting structure of re-peelable protective panel and mounting sheet using the same |
JP2007516279A JP4950881B2 (ja) | 2005-05-16 | 2006-05-15 | 再剥離可能な保護パネルの実装構造とこれに用いる実装用シート |
CA002608546A CA2608546A1 (en) | 2005-05-16 | 2006-05-15 | Removable protection panel mount structure and mounting sheet for use therein |
BRPI0610111-9A BRPI0610111A2 (pt) | 2005-05-16 | 2006-05-15 | estrutura de montagem de painel de proteção removìvel e lámina de montagem para uso nesta |
CN2006800167022A CN101175635B (zh) | 2005-05-16 | 2006-05-15 | 可再剥离保护面板的装配结构及其中所用的装配用板片 |
EP06732599A EP1882584B1 (en) | 2005-05-16 | 2006-05-15 | Removable protection panel mount structure and mounting sheet for use therein |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005143313 | 2005-05-16 | ||
JP2005-143313 | 2005-05-16 |
Publications (1)
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WO2006123616A1 true WO2006123616A1 (ja) | 2006-11-23 |
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PCT/JP2006/309668 WO2006123616A1 (ja) | 2005-05-16 | 2006-05-15 | 再剥離可能な保護パネルの実装構造とこれに用いる実装用シート |
Country Status (11)
Country | Link |
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US (1) | US20090087655A1 (ja) |
EP (1) | EP1882584B1 (ja) |
JP (1) | JP4950881B2 (ja) |
KR (1) | KR101266712B1 (ja) |
CN (1) | CN101175635B (ja) |
BR (1) | BRPI0610111A2 (ja) |
CA (1) | CA2608546A1 (ja) |
MY (1) | MY141348A (ja) |
RU (1) | RU2412821C2 (ja) |
TW (1) | TWI419790B (ja) |
WO (1) | WO2006123616A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP1882584A4 (en) | 2009-02-11 |
KR20080012273A (ko) | 2008-02-11 |
RU2007146761A (ru) | 2009-06-27 |
JPWO2006123616A1 (ja) | 2008-12-25 |
CA2608546A1 (en) | 2006-11-23 |
TW200701043A (en) | 2007-01-01 |
EP1882584A1 (en) | 2008-01-30 |
KR101266712B1 (ko) | 2013-05-28 |
EP1882584B1 (en) | 2013-01-02 |
TWI419790B (zh) | 2013-12-21 |
CN101175635B (zh) | 2012-09-05 |
CN101175635A (zh) | 2008-05-07 |
RU2412821C2 (ru) | 2011-02-27 |
US20090087655A1 (en) | 2009-04-02 |
MY141348A (en) | 2010-04-16 |
BRPI0610111A2 (pt) | 2010-06-01 |
JP4950881B2 (ja) | 2012-06-13 |
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