WO2015046220A1 - 電子機器用カバーガラスおよびその製造方法 - Google Patents

電子機器用カバーガラスおよびその製造方法 Download PDF

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Publication number
WO2015046220A1
WO2015046220A1 PCT/JP2014/075233 JP2014075233W WO2015046220A1 WO 2015046220 A1 WO2015046220 A1 WO 2015046220A1 JP 2014075233 W JP2014075233 W JP 2014075233W WO 2015046220 A1 WO2015046220 A1 WO 2015046220A1
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WO
WIPO (PCT)
Prior art keywords
cover glass
display
glass
decoration
electronic device
Prior art date
Application number
PCT/JP2014/075233
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
正 桜井
下川　貢一
英治 河野
信之 平嶋
Original Assignee
Hoya株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoya株式会社 filed Critical Hoya株式会社
Priority to CN201480047101.2A priority Critical patent/CN105492221B/zh
Priority to JP2015539244A priority patent/JP6153620B2/ja
Publication of WO2015046220A1 publication Critical patent/WO2015046220A1/ja

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/22—Removing surface-material, e.g. by engraving, by etching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • C03C17/328—Polyolefins
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
    • C03C23/0005—Other surface treatment of glass not in the form of fibres or filaments by irradiation
    • C03C23/0025—Other surface treatment of glass not in the form of fibres or filaments by irradiation by a laser beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate

Definitions

  • the present invention relates to a cover glass for an electronic device arranged so as to cover a display of the electronic device and a method for manufacturing the same.
  • a cover glass is disposed outside the display to protect the display such as liquid crystal.
  • a cover glass for a main body incorporated in a housing is attached to an electronic device such as a portable device so as to form a part of the exterior of the electronic device on the front surface of a display screen.
  • the display area of the display is transparent, and a frame-shaped decoration area is provided around the display area.
  • the decoration area is provided to conceal the wiring (this wiring is not transparent) for the internal casing and circuit, and the transparent electrode for the touch panel (ITO: IndiumxTin Oxide: indium tin oxide).
  • ITO IndiumxTin Oxide: indium tin oxide
  • a manufacturer's logo or pattern may be printed in the decoration area.
  • the conventional protective cover glass is generally not decorated and is entirely transparent.
  • a weak adhesive film is provided on the back surface of the protective cover glass, and is configured to be detachably attached to the cover glass for the main body.
  • the conventional cover glass for main body has a problem that the decoration area is limited and the degree of freedom in design is low. Needless to say, however, if the display area of the display is decorated, a portion that cannot be seen on the display is created.
  • the degree of freedom in design is also low in this case.
  • it is conceivable to decorate the protective cover glass by direct printing a step is formed between the protective cover glass and an undecorated region depending on the ink film thickness. And since this ink film thickness is thick and the flexibility of the adhesive film cannot absorb the level difference, there is a problem that a gap (film floating) occurs when it is applied to the cover ballast for the main body.
  • an object of the present invention is to provide a cover glass for an electronic device that is decorated without impairing the visibility of the display.
  • a typical configuration of the present invention is a cover glass for an electronic device that has a pair of main surfaces and is arranged so as to cover a display of the electronic device. Either one of them is decorated so that it can be seen by the user when the display is turned off and cannot be seen by the user when the display is turned on.
  • Unrecognizable means that it is not substantially visible in normal use. According to the said structure, the visibility of a display is not impaired, although decoration is given. Therefore, it is possible to give a novel decoration as compared with the conventional case, and the design can be dramatically improved.
  • the above-described cover glass for an electronic device may be an external cover glass that is detachably attached to the front surface of the display of the electronic device. As a result, the display area of the display can be retrofitted.
  • the electronic device cover glass has a first main surface disposed on the opposite side of the display and a second main surface disposed toward the display, and the decoration is provided on the second main surface. It may be formed. Thereby, the fall of the user's operativity by a decoration can be suppressed.
  • Decorative may be formed by laser marking. With laser marking, it is possible to draw precise and detailed characters or figures. In addition to laser marking, machining (milling) or etching may be used.
  • Another representative configuration of the present invention is a method of manufacturing a cover glass for an electronic device that is arranged so as to cover a display of the electronic device, and forms a glass substrate having an outer shape of a glass substrate having a pair of main surfaces. And a decoration process for decorating the glass substrate, and in the decoration process, it appears on either one of the pair of main surfaces so as to be visible by the user when the display is turned off. A decoration is formed so that the user cannot visually recognize the display when the display is on.
  • the decoration may be formed by laser marking.
  • FIG. 3 is an enlarged view of a range X in FIG. 2.
  • FIG. 3 shows an example of the laminated constitution of the cover glass for electronic devices of FIG.
  • FIG. 1 is a diagram illustrating a state in which a protective cover glass 100 as an example of a cover glass for an electronic device according to the first embodiment is attached to the electronic device.
  • the protective cover glass 100 is an external protective cover glass that is detachably attached so as to cover a part of the exterior of the electronic device.
  • the smartphone 300 is exemplified as the electronic device.
  • the electronic device is not limited to this, and other mobile phones, portable game machines, PDAs (Personal Digital Assistants), digital still cameras, video cameras, Alternatively, a slate PC (Personal Computer) or the like may be used.
  • the smartphone 300 includes a display 302 and a main body cover glass (electronic device cover glass) 304 that covers the surface of the display 302.
  • the body cover glass 304 is attached to the inside of the bezel of the housing 306 so as to form a part of the exterior of the smartphone 300.
  • the protective cover glass 100 includes a glass plate 102.
  • the protective cover glass 100 is attached by the user of the smartphone 300 so as to cover the main surface outside the main body cover glass 304 in order to protect the main body cover glass 304.
  • FIG. 2 is a schematic cross-sectional view after the protective cover glass 100 of FIG. 1 is attached to an electronic device (smartphone 300).
  • the cover glass 304 for main bodies is illustrated about the smart phone 300, and components other than the cover glass 304 for main bodies are typically illustrated as the smart phone main body 300A.
  • the protective cover glass 100 includes a glass plate 102 for protecting an electronic device (for example, the smartphone 300) and an attaching portion for attaching the glass plate 102 to the electronic device (the smartphone 300) in a detachable manner.
  • (Sticking layer) 104 The glass plate 102 includes a first main surface 102B disposed on the opposite side of the display, a second main surface 102C disposed toward the display, and an end surface 102A connecting the first and second main surfaces. Have.
  • the thickness of the glass plate 102 is 0.2 to 0.5 mm.
  • an opening is formed in the glass plate 102 so as to correspond to a position of a microphone, a speaker, a button, or the like of the electronic device.
  • the affixing portion 104 is formed over the entire surface other than the opening portion and the outer peripheral portion of the second main surface 102C of the glass plate 102 in plan view.
  • the protective cover glass 100 appears on one of the pair of main surfaces (the first main surface 102B and the second main surface 102C) so that the user can visually recognize the display when the display is turned off.
  • a decoration 108 (a portion surrounded by a broken line) is formed so that the user cannot visually recognize the display when the display is on. “Unrecognizable” means that it is not substantially visible in normal use. If you know in advance that there is a decoration and carefully observe it, it may be visible. However, it can be said that if it cannot be visually recognized at a normal distance and angle, it cannot be visually recognized.
  • the decoration 108 is formed by increasing the surface roughness of the second main surface 102C.
  • the decoration 108 is formed so as to cover an area corresponding to the display area of the display 302.
  • the decoration 108 includes characters, figures, and other arbitrary patterns.
  • FIGS. 3A and 3B are diagrams for explaining when the display 302 is turned off and when it is turned on.
  • FIG. 3A shows when the display 302 is turned off (Display OFF)
  • FIG. 3B shows when it is turned on (Display ON).
  • the display 302 is turned off, the light inserted from the outside is irregularly reflected on the decoration 108, and the decoration 108 is raised on the dark display 302 as shown in FIG.
  • the display 302 is on, the light emitted from the display 302 is dominant for the user to visually recognize. For this reason, as shown in FIG. 3B, the light irregularly reflected by the decoration 108 is difficult for the user to identify, and as a result, the decoration 108 becomes substantially invisible.
  • the visibility of the display 302 is not impaired even though the decoration 108 is applied to the display area of the display 302. Therefore, it is possible to give a novel decoration as compared with the conventional case, and the design can be dramatically improved.
  • the decoration 108 on the external protective cover glass 100, it is possible to decorate the display area of the display of any electronic device as a retrofit.
  • the decoration 108 can be formed by laser marking, for example. According to laser marking, it is possible to draw precise and detailed characters, figures, or patterns. As the laser, for example, a CO2 laser having a wavelength of 10.6 ⁇ m or a YV04 laser can be preferably used. In addition to the laser marking, the decoration 108 can be formed by machining (milling) or etching.
  • Table 1 is a table for explaining the arithmetic average roughness Ra and the visibility of the decoration 108.
  • the following Ra and Rz refer to the arithmetic average roughness and the maximum height roughness specified in JIS B 0601-2001.
  • Table 1 the case where the illuminance of the display 302 is 200 lux or more is set to be on, and the case where the illuminance is less than 100 lux is set to be off.
  • the distance between the user's eyes and the display 302 is 15 cm
  • the angle of the eyes with respect to the main surface of the protective cover glass 100 at the time of confirmation is 90 °
  • the size of the decoration 108 is set. About 1 cm2.
  • the confirmation item that can be visually recognized when the light is off the case where all 10 users are visible is indicated by ⁇ , and the case where 2 or less users are visible is indicated by ⁇ .
  • the case where all 10 users are not visually recognized is indicated by ⁇ , and the case where two or less users are not visually recognized is indicated by ⁇ .
  • the arithmetic average roughness Ra of the decorative portion is preferably 1.0-10 ⁇ m so that the display 302 can be visually recognized and cannot be visually recognized when the display 302 is turned off and when the display 302 is turned on.
  • Table 2 is a table for explaining the maximum height roughness Rz and the visibility of the decoration 108. Experimental conditions such as brightness and evaluation items were the same as those for Ra. From Table 2, it can be seen that Rz is preferably 5 to 50 ⁇ m so that the display 302 can be seen and cannot be seen when the display 302 is turned off and turned on.
  • the distance between the user and the display 302 is 15 cm or more, and the angle with respect to the main surface of the protective cover glass 100 of the user is 45 degrees. It is preferable that the display is visible regardless of whether the display is turned on or off. With such a decoration, peeping by others other than the user of the electronic device can be suppressed.
  • FIG. 4 is an enlarged view of a range X in FIG.
  • the protective cover glass 100 preferably has, as an overall structure, a recess 106 that is recessed toward the inner side in the surface direction on the second main surface 102 ⁇ / b> C side of the outer peripheral portion.
  • the recess 106 is arranged such that the outer peripheral end 104 ⁇ / b> A of the sticking part 104 is arranged on the inner side in the plane direction (left and right direction in FIG. 4) with respect to the end surface 102 ⁇ / b> A of the glass plate 102.
  • the protective cover glass 100 When the protective cover glass 100 is affixed to the smartphone 300 by forming the recess 106 as described above, a gap is generated between the protective cover glass 100 and the smartphone 300 by the recess 106. Therefore, the user can detach the protective cover glass 100 by hooking a nail or the like into the gap. Therefore, the protective cover glass 100 made of glass with good peelability can be realized.
  • the recess 106 can be easily formed without processing the glass with high hardness. Can do.
  • FIG. 5 is a diagram showing an example of a layer structure of the protective cover glass 100 of FIG. 1
  • FIG. 6 is a diagram showing an example of a procedure for forming the protective cover glass 100 of FIG.
  • the protective cover glass 100 includes (1) a glass plate forming step S400, (2) a chemical strengthening step S402, (3) an antifouling coat forming step S404, and (4) a decoration forming step S406, (5 ) Manufactured through the pasting part forming step S408.
  • a glass plate 102 having a desired shape is formed by machining or etching.
  • alumina silicate glass containing SiO2: 58 to 75 wt%, Al2O3: 4 to 20 wt%, Li2O: 3 to 10 wt%, Na2O: 4 to 13 wt%, Not only this but soda lime glass etc. may be used.
  • the glass plate 102 obtained in step S400 is chemically strengthened.
  • the glass plate 102 is brought into contact with the melted chemical strengthening salt, whereby an alkali metal ion having a relatively large atomic radius in the chemical strengthening salt and a relatively small atomic radius in the glass plate 102 are obtained.
  • This is a treatment for exchanging the alkali metal ions and causing the alkali metal ions having a large ion radius to permeate into the surface layer of the glass plate 102 to generate compressive stress.
  • alkali metal nitrates such as potassium nitrate and sodium nitrate are preferably used.
  • a low temperature ion exchange method in which ion exchange is performed in a temperature range not exceeding the glass transition temperature, for example, a temperature of 300 to 500 degrees Celsius is preferable. Since the chemically strengthened glass plate 102 is improved in strength and excellent in impact resistance, the glass plate 102 for the protective cover glass 100 is sufficiently effective as a protective cover glass even when the thickness is, for example, about 0.3 mm. Can be demonstrated.
  • the antifouling coat 110 is formed on the glass plate 102 chemically strengthened in step S402.
  • the antifouling coating 110 is applied and formed on the surface of the glass plate 102 by, for example, a spray method, a dip method, a vapor deposition method, or a brush coating method.
  • the coating material is preferably a perfluoropolyether compound (fluorine resin) having a hydroxyl group at the terminal group. Thereby, it can couple
  • the decoration 108 is formed by laser marking on the second main surface 102C of the glass plate 102 on which the antifouling coating is formed in step S404.
  • the laser for example, a CO2 laser having a wavelength of 10.6 ⁇ m or a YV04 laser is used.
  • the decoration 108 has an arithmetic average roughness Ra of 1.0-10 ⁇ m and an arithmetic average roughness Ra of 1.0-10 ⁇ m.
  • the pasting part 104 is formed on the glass plate 102.
  • the affixing part 104 is formed of a silicon adhesive.
  • the sticking part 104 includes a reinforcing film for reinforcing the glass plate 102, a first adhesive layer for bonding the second main surface 102C and the reinforcing film, and the reinforcing film to the cover glass 304 for the main body.
  • the structure which has the 2nd contact bonding layer which consists of a silicon-type adhesive agent for affixing on (all of each layer is not shown in figure) may be sufficient.
  • the glass plate 102 can be reinforced from the second main surface 102C side.
  • the thickness of the sticking portion 104 is preferably in the range of 0.02 to 0.2 mm, more preferably 0.02 mm, from the viewpoint of achieving both exhibiting peelability and reducing the thickness of the protective cover glass 100. It is in the range of 05 to 0.1 mm.
  • the length L1 (the depth dimension from the end surface 102A of the recess 106) L1 that is recessed toward the inside of the recess 106 is 0.1 mm to 0.3 mm than the end surface 102A of the glass plate 102. It is good to be in the range. Thereby, coexistence of peelability and aesthetics can be aimed at. That is, when length L1 is 0.1 mm or more, peelability can be exhibited more.
  • the length L1 exceeds 0.3 mm, dust, sebum, etc. accumulate in the hollow part 106 with the passage of time, and there is a possibility that the aesthetic appearance of the smartphone 300 may be impaired.
  • portable electronic devices such as a mobile phone including the smartphone 300 are often placed in a pocket of a user's clothes, and therefore, clothes fibers and the like tend to collect in the recess 106 as dust.
  • FIG. 7 is an explanatory diagram of a range where the depression 106 in FIG. 4 is formed.
  • FIG. 7A is a diagram showing a first example
  • FIG. 7B is a diagram showing a second example. 7A and 7B, the range of the depression 106 is indicated by a dotted line.
  • a recess 106 may be provided on the entire circumference of the outer peripheral portion of the protective cover glass 100 on the second main surface 102C side. Moreover, as shown in FIG.7 (b), you may provide the hollow part 106 only in the one part edge
  • the depression 106 is provided on one side of the pair of short sides of the smartphone 300 (the upper side of FIG. 7B). The depression 106 may be provided in at least a part of the outer peripheral portion of the protective cover glass 100, such as providing a depression in the shape of a circular arc in plan view, or in a corner portion of the protective cover glass 100 in plan view. .
  • the protective cover glass 100 does not impair the visibility of the display despite the decoration. Therefore, it is possible to give a novel decoration as compared with the conventional case, and the design can be dramatically improved. Furthermore, at least a part of the outer periphery of the second main surface 102C is provided with a recess 106 that is recessed from the end face 102A toward the inner side in the surface direction of the second main surface 102C. Since the protective cover glass 100 can be peeled off by hooking a nail or the like in the gap, it is possible to realize an electronic device cover glass made of glass having good peelability.
  • the decoration 108 is described as being formed on the second main surface 102C of the protective cover glass 100.
  • the decoration may be formed on the first main surface 102B.
  • you may form the decoration 108 in the cover glass 304 for main bodies of the smart phone 300.
  • chamfering may be performed at a boundary portion between the end portion of the cover glass for the main body or the protective cover glass and the main surface on the operation surface side.
  • the chamfered surface formed by the chamfering process may have a curved shape that is convex or concave toward the outside of the glass substrate in addition to a linear shape in the cross-sectional shape.
  • the recess 106 is formed by the position of the outer peripheral end 104A of the sticking portion 104.
  • the protective cover glass 200 according to the second embodiment is the second outer peripheral portion of the glass plate 202. It differs from the protective cover glass 100 according to the first embodiment in that the main surface 102C side is recessed inward and forms a part of the recessed portion 106.
  • FIG. 8 is a view showing an outer peripheral portion of the protective cover glass 200 according to the second embodiment
  • FIG. 9 is a view showing another example of the second embodiment. 8 and 9 are diagrams corresponding to FIG. 4 of the first embodiment.
  • the protective cover glass 200 shown in FIG. 8 between the end surface 202A of the glass plate 202 and the second main surface 202C, it is inclined toward the inner side (the inner side in the plane direction of the second main surface 202C) than the end surface 202A.
  • An intervening surface 202D is formed.
  • the interposed surface 202D may be formed on the entire circumference of the outer periphery of the glass plate 202, or may be formed only on a part of the outer periphery, a part of the outer periphery, or a corner of the glass plate 202 in plan view. May be.
  • the interposed surface 202D constitutes a part of the contour of the recess 106.
  • a gap generated between the protective cover glass 200 and the smartphone 300 can be made larger than the thickness of the pasting portion 104. This makes it easier for the user to hook a nail or the like into the gap of the recess 106. Therefore, the peelability of the protective cover glass 200 can be enhanced as compared with the first embodiment.
  • the glass plate 212 includes a first main surface 212B, a second main surface 212C, an end surface 212E that is a curved surface in a sectional view, and a second main surface 212C.
  • An interposition surface 212D is provided between the end surface 212E and the end surface 212E.
  • the end surface 212E is inclined so as to taper from the second main surface 212C side to the first main surface 212B side.
  • the boundary portion 212F between the first main surface 212B and the end surface 212E of the glass plate 212 has a rounded shape.
  • the boundary portion 212A between the end surface 212E and the interposition surface 212D (the outermost peripheral portion of the end surface 212E) is also rounded.
  • the height of the end surface 212E is higher than the height of the interposition surface 212D. This is because the smoothness when touched is more important than the ease of hooking during normal use (after completion of the pasting operation).
  • the end surface 212E is inclined so as to taper from the second main surface 212C side to the first main surface 212B side, the user's finger etc. Can be prevented. Further, by rounding the boundary portion 212A between the first main surface 212B and the end surface 212E of the glass plate 212, the tactile sensation when the user touches the boundary portion with a finger can be made smoother. Therefore, it is particularly effective in the case of the smartphone 300 having the display 302.
  • FIG. 10 is a diagram illustrating a method for processing the outer peripheral portion of the glass plates 202 and 212 of FIGS. 8 and 9.
  • FIG. 10A is a diagram for processing the glass plate 202 by machining.
  • the machining for example, processing using the rotating grindstone 308 illustrated in FIG. 10A is effective. .
  • FIG. 10B is a diagram for processing the glass plate 212 by etching.
  • the processing by etching illustrated in FIG. 10B is effective.
  • the end surface 212E is formed in addition to the intervening surface 212D and the boundary portion 212F is rounded, it is advantageous because it can be formed at a time by etching.
  • the region other than the region to be etched of the glass plate 212 is masked with the resist material 310, and the surface side is etched more than the second main surface side, whereby the interposition surface 212D of FIG.
  • the shape of the end face 212E and the boundary portions 212A and 212F can be suitably made.
  • the configuration in which the protective cover glasses 100, 200, and 210 are attached to the cover glass 304 for the main body of the smartphone 300 has been described.
  • the present invention is not limited to this, and for example, a configuration in which the smartphone 300 is attached to the back side of the housing 306 may be used.
  • the outer peripheral end 104A of the sticking portion 104 is arranged at a distance from the end face 102A to form the hollow portion 106, and the length L1 of the hollow portion 106 is changed. Then, testing and evaluation were performed.
  • the thickness of the glass plate 102 was 0.3 mm, and the height of the recess 106 was 0.1 mm.
  • each of the protective cover glasses 100 having the length L1 of the hollow portion 106 of Samples 1 to 10 shown in Table 3 was prepared, and the following test was performed. That is, each protective cover glass of samples 1 to 10 was actually attached to the smartphone 300, and it was tested how many times the test subject could peel off the protective cover glass with a finger.
  • the criteria for evaluation are as follows. ⁇ ... Success in one time, ⁇ ... Success in two to three times, ⁇ ... Success in four to five times, ⁇ ... Success in six times
  • the length L1 of the recess 106 (depth dimension from the end face 102A of the recess 106) L1 is preferably 0.04 mm or more, more preferably 0.1 mm to 0. It has been found that a range of 3 mm is preferable. When L1 was larger than 0.3 mm, it was confirmed that the outer periphery of the protective cover glass seemed to be partially discolored due to the accumulation of dust in the recess.
  • a notch structure may be provided between the second main surface and the end surface of the glass plate, and only this notch structure may be used as the depression.
  • the position of the outer peripheral edge of the sticking part and the position of the end face of the glass plate may be matched so that the outer peripheral part of the sticking part follows the inner surface of the notch structure of the glass plate. Good.
  • a clearance gap is formed between the outer peripheral part of a sticking part and the exterior of an electronic device, and this clearance gap can be made into a hollow.
  • a process of reducing the adhesiveness of the outer peripheral portion of the pasting portion may be performed in advance.
  • the protective member transparent plastic or sheet material such as acrylic resin, polyethylene terephthalate, or polycarbonate may be used instead of glass.
  • transparent plastic or sheet material such as acrylic resin, polyethylene terephthalate, or polycarbonate
  • the glass materials exemplified in the above embodiment are advantageous in that they are high in height and are not easily damaged, and are high in texture.
  • the above marking may be formed inside the glass instead of being formed on one main surface of the glass.
  • Various methods can be used as a method for forming the above decoration inside the glass. For example, a method of condensing laser light inside the glass, or a glass in which a marking is formed on one main surface. You may form so that another glass plate may be bonded together so that a marking surface may become an inner side with respect to a plate. Furthermore, a sheet material made of a material other than the decorated glass may be sandwiched between two glass plates.
  • the present invention is for an electronic device arranged so as to cover a display of an electronic device such as a mobile phone (smart phone), a portable game machine, a PDA (Personal Digital Assistant), a digital still camera, a video camera, and a PC (Personal Computer). It can utilize as a cover glass and its manufacturing method.
PCT/JP2014/075233 2013-09-24 2014-09-24 電子機器用カバーガラスおよびその製造方法 WO2015046220A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480047101.2A CN105492221B (zh) 2013-09-24 2014-09-24 电子设备用罩玻璃及其制造方法
JP2015539244A JP6153620B2 (ja) 2013-09-24 2014-09-24 電子機器用カバーガラスおよびその製造方法

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JP2013196567 2013-09-24
JP2013-196567 2013-09-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018040920A (ja) * 2016-09-07 2018-03-15 ス キム，ヨン 着脱層を有するディスプレイ装置、及びその製造方法｛Ａｐｐａｒａｔｕｓ ｏｆ ｄｉｓｐｌａｙ ｈａｖｉｎｇ ｄｅｔａｃｈａｂｌｅ ｌａｙｅｒ ａｎｄ ｍｅｔｈｏｄ ｏｆ ｍａｎｕｆａｃｔｕｒｉｎｇ ｔｈｅ ｄｉｓｐｌａｙ｝
JP2020514777A (ja) * 2017-03-17 2020-05-21 エフジーピー キャピタル エスアー クリスタルガラス又はスクリーンを含む装置
EP3930431A4 (en) * 2019-04-10 2022-04-20 Guangdong Oppo Mobile Telecommunications Corp., Ltd. ELECTRONIC DEVICE HOUSING, METHOD FOR PREPARING IT AND ASSOCIATED ELECTRONIC DEVICE

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JP2018040920A (ja) * 2016-09-07 2018-03-15 ス キム，ヨン 着脱層を有するディスプレイ装置、及びその製造方法｛Ａｐｐａｒａｔｕｓ ｏｆ ｄｉｓｐｌａｙ ｈａｖｉｎｇ ｄｅｔａｃｈａｂｌｅ ｌａｙｅｒ ａｎｄ ｍｅｔｈｏｄ ｏｆ ｍａｎｕｆａｃｔｕｒｉｎｇ ｔｈｅ ｄｉｓｐｌａｙ｝
JP2020514777A (ja) * 2017-03-17 2020-05-21 エフジーピー キャピタル エスアー クリスタルガラス又はスクリーンを含む装置
JP7104077B2 (ja) 2017-03-17 2022-07-20 エフジーピー キャピタル エスアー クリスタルガラス又はスクリーンを含む装置
EP3930431A4 (en) * 2019-04-10 2022-04-20 Guangdong Oppo Mobile Telecommunications Corp., Ltd. ELECTRONIC DEVICE HOUSING, METHOD FOR PREPARING IT AND ASSOCIATED ELECTRONIC DEVICE

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