WO2014013996A1 - Procédé de fabrication pour lamelle couvre-objet renforcée, et lamelle couvre-objet renforcée - Google Patents

Procédé de fabrication pour lamelle couvre-objet renforcée, et lamelle couvre-objet renforcée Download PDF

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Publication number
WO2014013996A1
WO2014013996A1 PCT/JP2013/069324 JP2013069324W WO2014013996A1 WO 2014013996 A1 WO2014013996 A1 WO 2014013996A1 JP 2013069324 W JP2013069324 W JP 2013069324W WO 2014013996 A1 WO2014013996 A1 WO 2014013996A1
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Prior art keywords
cover glass
reinforced cover
glass plate
polishing
glass
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PCT/JP2013/069324
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English (en)
Japanese (ja)
Inventor
出 鹿島
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旭硝子株式会社
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Publication of WO2014013996A1 publication Critical patent/WO2014013996A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/065—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of thin, brittle parts, e.g. semiconductors, wafers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
    • 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Definitions

  • the present invention relates to a method for producing a reinforced cover glass, a reinforced cover glass, a method for producing a reinforced cover glass with an integrated touch sensor, and a reinforced cover glass with an integrated touch sensor.
  • Capacitive touch panels used in electronic terminal devices such as smartphones and tablet computers have touch sensor wiring, such as translucent input position detection electrodes, formed on a glass plate and reinforced on the upper surface of the touch sensor wiring. It is constituted by arranging a cover glass.
  • Patent Document 1 proposes a touch sensor-integrated reinforced cover glass in which touch sensor wiring is directly formed on the reinforced cover glass without using the glass plate. According to the touch sensor integrated reinforced cover glass of Patent Document 1, the number of parts can be reduced and the thickness can be reduced.
  • one large-sized glass plate (hereinafter, in this specification, a large-sized glass plate for cutting out product-sized glass plates of various electronic device products).
  • the base plate which is a glass plate is referred to as “first glass plate”.
  • a base plate is made of a glass plate of a product size of a desired dimension (hereinafter referred to as a product size glass plate in this specification).
  • a method of taking a large number of touch sensor-integrated reinforced cover glasses by cutting into “second glass plate”) is preferable.
  • Patent Documents 2 and 3 propose a reinforced cover glass suitable for a touch sensor integrated reinforced cover glass. Its contents are measured by the method specified in JIS R1601: 2008 by specifying the composition of the glass and chamfering or etching the end face of the chemically strengthened reinforced cover glass. 4 point bending strength: also called end face strength).
  • Patent Documents 2 and 3 do not specify a manufacturing process for increasing the bending strength of the reinforced cover glass. Moreover, since the processing methods of Patent Documents 2 and 3 for increasing the bending strength only perform chamfering or etching on the end face of the reinforced cover glass, the bending strength cannot be sufficiently increased.
  • the bending strength of the reinforced cover glass currently on the market is approximately 600 to 700 MPa. Also, there is a correlation between bending strength and impact strength. In the market, a reinforced cover glass having high bending strength, that is, high impact strength is desired.
  • the present invention has been made in view of such circumstances, and a method for manufacturing a reinforced cover glass and a reinforced cover glass having unprecedented bending strength, a method for manufacturing a reinforced cover glass integrated with a touch sensor, and a touch sensor.
  • An object is to provide a body-type reinforced cover glass.
  • a first glass plate having two opposing main planes that is, main surfaces
  • the first glass plate having two opposing main planes is chemically strengthened to at least one of the two main planes.
  • a polishing step for polishing the end face to be connected and an etching step for etching the end face of the second glass plate are provided.
  • the manufacturing method of an above-described reinforced cover glass is implemented according to the order of an above-described process.
  • One aspect of the reinforced cover glass of the present invention is characterized by being manufactured by the method for manufacturing a reinforced cover glass of one aspect of the present invention in order to achieve the above object.
  • one aspect of the reinforced cover glass of the present invention has two opposing principal planes and an end face connecting the two principal planes, and compressive stress is applied to at least one of the principal planes.
  • a layer is formed, the arithmetic average roughness Ra of the end face is 20 nm or less, and the four-point bending strength measured by a method defined in JIS R1601: 2008 is 1000 MPa or more.
  • a compressive stress layer is formed on the main planes on both sides of the reinforced cover glass.
  • the first object has two main planes facing each other and an end face connecting between the two main planes.
  • the manufacturing method of an above-described reinforced cover glass is implemented according to the order of an above-described process.
  • the present invention also provides a touch sensor-integrated reinforced cover glass manufactured by the above-described manufacturing method.
  • One aspect of the reinforced cover glass with an integrated touch sensor according to the present invention has two main planes facing each other and an end face connecting between the two main planes in order to achieve the above object.
  • Compressive stress layer is formed on at least one of them
  • touch sensor wiring is formed on one of the main planes
  • the arithmetic mean roughness Ra of the end face is 20 nm or less, and measured by a test method defined in JIS R1601: 2008
  • the four-point bending strength is 1000 MPa or more.
  • a compressive stress layer is formed on the main planes on both sides of the reinforced cover glass.
  • the present invention also provides a glass plate processing process for further enhancing the bending strength of the glass plate by providing a polishing step before the etching step.
  • the present invention includes a polishing step before the etching step, and polishes the end surface of the second glass plate in the polishing step to remove scratches that cause cracks and reduce the roughness of the end surface. And the end surface is etched in an etching process.
  • “providing a polishing step before the etching step” includes “being equipped with a polishing step immediately before the etching step” as well as “polishing step, chemical strengthening step, and then etching step in that order”.
  • another process for example, a cleaning process may be added between the above-described processes.
  • a reinforced cover glass having a 4-point bending strength of 1000 MPa or more measured by a test method defined in JIS R1601: 2008, and a touch sensor An integrated reinforced cover glass can be provided. This strength is unprecedented.
  • the arithmetic average roughness Ra of the end face is set to 20 nm or less by polishing the end face of the second glass plate in the polishing step.
  • a reinforced cover glass having a four-point bending strength of 1000 MPa or more as measured by a test method defined in JIS R1601: 2008.
  • the polishing step contacts a brush that moves continuously while supplying a polishing liquid containing abrasive grains to the end face of the second glass plate. It is preferable that the end face is polished by the above.
  • the arithmetic average roughness Ra of the end face of the second glass plate can be reduced to 20 nm or less by performing the polishing step and then the etching step.
  • a cutting step of cutting the first glass plate into a desired shape is provided between the chemical strengthening step and the polishing step.
  • the first glass plate is chemically strengthened.
  • the chemically strengthened first glass plate is cut into a desired shape, and a large number of reinforced cover glasses having desired dimensions are taken.
  • “multi-piece” means that a second glass plate having a smaller size (for example, a glass plate having a product size applied to a touch panel product) is cut out from the first glass plate.
  • the end face of the reinforced cover glass is polished to reduce the end face roughness. Thereafter, the end face is etched.
  • the manufacturing process of the reinforced cover glass includes a cutting process
  • the end surface of the reinforced cover glass is polished to reduce the roughness of the end surface because the polishing process is included in the previous process of the etching process.
  • a reinforced cover glass having a bending strength that is not found in the past can be obtained.
  • a cutting step of cutting the first glass plate into a second glass plate having a desired shape is provided as a pre-process of the polishing step.
  • the first glass plate is cut into a desired shape, and a large number of second glass plates having desired dimensions are taken.
  • the end face of the second glass plate is polished to reduce the end face roughness.
  • the second glass plate is chemically strengthened to produce a reinforced cover glass.
  • the end face having a small roughness of the reinforced cover glass is etched.
  • the manufacturing process of the reinforced cover glass includes a cutting process, the end surface of the reinforced cover glass is polished to reduce the roughness of the end surface because the polishing process is included in the previous process of the etching process.
  • a reinforced cover glass having a bending strength that is not found in the prior art can be obtained.
  • the arithmetic average roughness Ra of the end surface is 20 nm or less by polishing the end surface of the second glass plate in the polishing step. It is preferable to make it. As described above, if the arithmetic average roughness Ra of the end surface is 20 nm or less by polishing the end surface of the second glass plate in the polishing step, the end surface of the second glass plate is subjected to etching treatment. After that, the arithmetic average roughness Ra of the end surface of the second glass plate subjected to the etching treatment can be set to 20 nm or less.
  • a touch sensor integrated reinforced cover glass having a four-point bending strength of 1000 MPa or more measured by a test method defined in JIS R1601: 2008.
  • the polishing step continuously moves while supplying a polishing liquid containing polishing abrasive grains to the end surface of the second glass plate. It is preferable to polish the said end surface by making the brush to contact.
  • the arithmetic average roughness Ra of the end face of the second glass plate can be 20 nm or less.
  • One embodiment of the present invention is to polish an end face with a polishing liquid containing abrasive grains, preferably so-called free abrasive grains, whereby the end face of a glass plate can be satisfactorily polished.
  • the abrasive grains are not limited to loose abrasive grains, and even if the end face of the glass plate is polished with a fixed abrasive grain (grinding stone) to which a large abrasive grain is fixed, the arithmetic average roughness of the end face Ra can be 20 nm or less.
  • the present invention it is possible to provide a method for manufacturing a reinforced cover glass and a reinforced cover glass having an unprecedented bending strength, a method for manufacturing a touch sensor integrated reinforced cover glass, and a touch sensor integrated reinforced cover glass.
  • the manufacturing method of the reinforced cover glass which comprises the input operation surface of capacitive touch panels, such as a smart phone and a tablet computer, and the manufacturing method of a touch sensor integrated reinforced cover glass are demonstrated to an example.
  • FIG. 1 is an enlarged cross-sectional view of a main part schematically showing the configuration of a reinforced cover glass 1 with an integrated touch sensor.
  • the touch sensor-integrated reinforced cover glass 1 has a function as a cover glass constituting an input operation surface of a capacitive touch panel, and a function as a sensor substrate on which touch sensor wiring such as an input position detection electrode is formed. Have both.
  • the touch sensor integrated reinforced cover glass 1 is configured by providing an input position detecting electrode 12, a black light shielding layer 14, a peripheral wiring 16, a protective layer 18 and the like on one main plane 10A of the reinforced cover glass 10. .
  • the other main plane 10B of the reinforced cover glass 10 is an input operation surface.
  • the thickness of the reinforced cover glass 10 is usually about 0.3 to 1.5 mm, preferably 0.5 to 1.1 mm.
  • the end surface 10C which connects between the two main planes 10A and 10B which oppose is chamfered as needed. That is, the ridge angle part between main plane 10A, 10B and the end surface 10C is ground, and the chamfered surface 11 of predetermined width is formed in the peripheral part of main plane 10A, 10B.
  • the input position detection electrode 12 is made of a light-transmitting conductive film such as an ITO (Indium Tin Oxide) film or the like in the central region of one main plane 10A of the reinforced cover glass 10 (that is, a display such as a liquid crystal display panel). Effective pixel area).
  • the thickness of the translucent conductive film forming the input position detecting electrode 12 is about 20 to 100 nm.
  • the light shielding layer 14 is formed to completely control the light incident on the liquid crystal display panel, and is formed in a region around the central region where the input position detecting electrode 12 is formed, that is, in a peripheral region.
  • the light shielding layer 14 is formed of, for example, a black photosensitive resin (photoresist) containing titanium black or the like.
  • the thickness of the light shielding layer 14 is about 1 to 2 ⁇ m.
  • the light shielding layer 14 can also be formed by a screen printing method or the like. However, when the printing method is used, since the thickness of the light shielding layer 14 is as thick as about 10 to 30 ⁇ m, it is preferable to use a photoresist for the light shielding layer 14.
  • the peripheral wiring 16 is formed on the light shielding layer 14 from a metal such as a laminated structure of Mo—Nb alloy / Al / Mo—Nb alloy or a laminated structure of Mo—Nb alloy / Al—Nd alloy / Mo—Nb alloy. Formed by the film.
  • the thickness of the metal film forming the peripheral wiring 16 is about 0.3 to 0.5 ⁇ m.
  • the protective layer 18 is formed mainly to protect the input position detection electrode 12, the light shielding layer 14, and the peripheral wiring 16, and to cover the input position detection electrode 12, the light shielding layer 14, and the peripheral wiring 16.
  • the protective layer 18 is formed of, for example, a translucent photoresist.
  • the thickness of the protective layer 18 is about 1 to 2 ⁇ m.
  • FIG. 2 is a flowchart showing a manufacturing process of the first manufacturing method of the reinforced cover glass 10, in which a large number of second glass plates having a product size are taken from the base plate which is the first glass plate, and the reinforced cover glass is obtained.
  • 10 is a flowchart of a manufacturing process for manufacturing 10; Hereinafter, this manufacturing process will be described with reference to the structure of the reinforced cover glass of FIG.
  • an unreinforced glass plate that is the same size as the reinforced cover glass 10 that is, the second glass plate
  • the unstrengthened base plate is cut to obtain a plurality of product-sized glass plates 10 (step S40: cutting step).
  • step S41 polishing step
  • the end face 10C of the glass plate 10 is polished by a polishing means to remove scratches on the end face 10C that cause cracks and reduce the roughness of the end face 10C
  • the polishing step it is preferable that the end face 10C is polished by a polishing means so that the arithmetic average roughness Ra of the end face 10C is 20 nm or less.
  • the glass plate 10 is chemically strengthened by a chemical strengthening method (that is, an ion exchange strengthening method) to manufacture the strengthened cover glass 10 (step S42: chemical strengthening step).
  • the chemical strengthening treatment is performed by, for example, immersing the glass plate 10 in a molten salt of an alkali metal salt at 400 ° C. to 550 ° C. for a certain period of time, for example, about 1 to 48 hours, so that alkali metal ions (typically Forms a surface compressive stress layer on the surface of the glass plate 10 by exchanging Na ions) with alkali metal ions (typically K ions) in a molten salt having a larger ion radius than the alkali metal ions. It is a process to strengthen.
  • alkali metal ions typically Forms a surface compressive stress layer on the surface of the glass plate 10 by exchanging Na ions
  • alkali metal ions typically K ions
  • the molten salt used for the chemical strengthening treatment is not particularly limited as long as it contains, for example, potassium ions.
  • a molten salt of potassium nitrate (KNO 3 ) is preferably used.
  • KNO 3 potassium nitrate sodium nitrate
  • KNO 3 potassium nitrate sodium nitrate
  • NaNO 3 sodium nitrate
  • step S43 etching process
  • the entire surface of the end face 10C can be uniformly etched, and the arithmetic average roughness Ra of the end face after the etching process is processed. Can be made 20 nm or less. Therefore, according to the 1st manufacturing method, the reinforced cover glass 10 which has the bending strength which is not in the past can be obtained.
  • FIG. 3 is a flowchart showing a manufacturing process of the second manufacturing method of the reinforced cover glass 10. A chemical strengthening process is performed on the base plate which is the first glass plate, and the reinforced cover glass 10 having a product size is formed from the base plate. It is a flowchart of the manufacturing process which takes many sheets.
  • the base plate is chemically strengthened by a chemical strengthening method to form a base plate size reinforced cover glass (step S30: chemical strengthening step).
  • step S31 cutting step
  • the end face 10C where the tensile stress layer of the reinforced cover glass 10 is exposed is polished by a polishing means to remove scratches on the end face 10C that cause cracks and reduce the roughness of the end face 10C (step S32: polishing step). ).
  • the polishing step it is preferable that the end face 10C is polished by a polishing means so that the arithmetic average roughness Ra of the end face 10C is 20 nm or less.
  • the entire surface of the end face 10C can be etched more uniformly, and the arithmetic average roughness Ra of the end face after this etching process can be reduced to 20 nm or less.
  • step S33 etching process
  • the polishing process is provided in the previous process of the etching process, the entire end face 10C can be uniformly etched. Therefore, according to the 2nd manufacturing method, the reinforced cover glass 10 which has the bending strength which is not in the past can be obtained.
  • FIG. 4 is a flowchart showing a manufacturing process of the manufacturing method of the touch sensor-integrated reinforced cover glass 1, which is performed by performing a chemical strengthening process on the base plate, which is the first glass plate, and then performing a wiring forming process. It is a flowchart of the manufacturing process which manufactures the touch sensor integrated reinforced cover glass 1 of a product size from a base plate.
  • the unstrengthened base plate is chemically strengthened to make a base plate-sized reinforced cover glass (step S60: chemical strengthening step).
  • step S61 wiring forming step. Since the method for forming these touch sensor wirings is a known technique, a specific description thereof will be omitted.
  • step S62 cutting step
  • step S63 polishing). Process
  • the end face 10C where the tensile stress layer of the reinforced cover glass 10 is exposed is polished by a polishing means to remove scratches on the end face 10C that cause cracks and reduce the roughness of the end face 10C (step S63: polishing). Process).
  • the polishing step it is preferable that the end face 10C is polished by a polishing means so that the arithmetic average roughness Ra of the end face 10C is 20 nm or less.
  • the entire surface of the end face 10C can be etched more uniformly, and the arithmetic average roughness Ra of the end face after this etching process can be reduced to 20 nm or less.
  • step S64 etching process
  • the touch sensor integrated reinforced cover glass 1 As described above, according to the method of manufacturing the reinforced cover glass 1 with an integrated touch sensor, since the polishing process is provided in the previous process of the etching process, the entire end surface 10C can be uniformly etched. Therefore, according to the manufacturing method of the touch sensor integrated reinforced cover glass 1, the touch sensor integrated reinforced cover glass 1 having a bending strength that has not been conventionally available can be obtained.
  • the thickness of the compressive stress layer on the main planes 10A and 10B of the reinforced cover glass 10 formed in the chemical tempering process and the treatment in the etching process is performed before the chemical strengthening process. Even in the case of the first manufacturing method of FIG.
  • the thickness of the compressive stress layer is preferably 10 ⁇ m or more, and the etching amount is preferably 2 ⁇ m to 10 ⁇ m.
  • the etching amount refers to the thickness at which the surface of the end face of the glass plate is removed by etching.
  • the etching amount is controlled by the immersion time in the mixed aqueous solution containing HF (hydrofluoric acid). Specifically, after performing etching for a predetermined time using glass of the same composition in advance to calculate the etching amount, etching is performed by adjusting the immersion time so that the desired etching amount is obtained. Depending on the type of glass, the hydrofluoric acid concentration may be changed to adjust the etching amount.
  • FIG. 5 is a side view of the brush polishing apparatus 30 that polishes the end face 10 ⁇ / b> C of the reinforced cover glass (glass plate) 10.
  • a brush polishing apparatus 30 shown in FIG. 1 includes a laminated body 20 formed by laminating a plurality of (for example, 200) reinforced cover glasses (glass plates) 10, and a polishing brush that rotates an outer peripheral portion of the laminated body 20.
  • This is an apparatus that polishes the end face 10C of each reinforced cover glass (glass plate) 10 in a lump by polishing by 34.
  • the reinforced cover glass (glass plate) 10 is laminated with the interval adjusting member 22 interposed therebetween, and the interval G in the laminating direction is adjusted to a predetermined value.
  • the brush polishing apparatus 30 includes a laminate holding unit 32, a polishing brush 34, a driving unit (not shown) that drives the polishing brush 34, and a polishing liquid supply unit 36 that supplies a polishing liquid 38.
  • the laminate holder 32 holds the laminate 20 in a detachable manner.
  • the stacked body 20 is held by being sandwiched from both sides in the stacking direction.
  • the polishing brush 34 includes a shaft 34A and a large number of brush hairs 34B provided radially on the outer periphery of the shaft 34A.
  • the shaft 34A is formed in a cylindrical shape having a predetermined outer diameter.
  • the brush bristles 34B are provided on the outer periphery of the shaft 34A by spirally winding the thing implanted in the belt-like body around the outer periphery of the shaft 34A.
  • the brush bristles 34B are made of, for example, a flexible wire made of polyamide resin or the like.
  • the wire may contain particles such as alumina (Al 2 O 3 ), silicon carbide (SiC), and diamond.
  • the polishing liquid supply unit 36 supplies the polishing liquid to the contact portion between the polishing brush 34 and the laminate 20.
  • the polishing liquid 38 contains polishing abrasive grains and a dispersion medium, and is adjusted to a predetermined specific gravity.
  • the abrasive grains for example, cerium oxide, zirconia, or the like is used.
  • the average particle diameter (D50) of the abrasive grains is, for example, 5 ⁇ m or less, preferably 2 ⁇ m or less.
  • the specific gravity of the polishing liquid is preferably 1.1 to 1.4.
  • the polishing brush 34 is rotated at a constant rotation speed.
  • the polishing brush 34 is moved horizontally toward the laminate 20, and the abrasive brush 34 is pressed and brought into contact with the outer peripheral portion of the laminate 20. At this time, the polishing brush 34 is moved horizontally so as to come into contact with a predetermined pushing amount.
  • the polishing liquid is supplied at a predetermined supply amount from the polishing liquid supply unit 36 to the contact portion between the polishing brush 34 and the laminate 20.
  • the polishing brush 34 is reciprocated at a predetermined speed in the axial direction (lamination direction of the glass plate 10).
  • the end surface 10C of the glass plate 10 of several sheets can be grind
  • FIG. 6A is a cross-sectional view of the end face 10C schematically showing the roughness (shape) of the end face 10C immediately after cutting
  • FIG. 6B is the roughness (shape) of the end face 10C after the polishing process.
  • the uneven portion of the scratch on the end surface 10C of the reinforced cover glass (glass plate) 10 is polished and removed by the polishing brush 34, and the arithmetic average roughness Ra of the end surface 10C is 20 nm or less. Became. In addition, arithmetic mean roughness Ra was measured based on JIS0B0601.
  • an etching process for etching the end face 10C of the reinforced cover glass 10 is provided as a subsequent process of the polishing process by the brush polishing apparatus 30. ing.
  • the sharpened portion of the minute uneven portion present on the polished surface of the end surface 10C can be blunted, and the etching process is uniformly performed on the entire surface of the end surface 10C. Therefore, the bending strength of the reinforced cover glass 10 can be further increased.
  • the end face 10C of the reinforced cover glass 10 is immersed in a mixed aqueous solution containing 2 wt% HF (hydrofluoric acid) in 6 mol / L HCl (hydrochloric acid), and the end face 10C is dissolved by about 1 ⁇ m to 5 ⁇ m from the surface layer.
  • a masking film is formed in the required area
  • the masking film is peeled off.
  • the bending strength of the reinforced cover glass 10 was further increased, and the reinforced cover glass 10 having a four-point bending strength of 1000 MPa or more measured by a method defined in JIS R1601: 2008 was obtained.
  • the base plate is cut by a scribe / break method, a laser cutting method, or the like.
  • the scribe break method is a method in which a scribe line (groove line) is formed on a main surface of a glass plate along a planned cutting line with a scribe cutter, and then the glass plate is bent to be cut.
  • the laser cutting method is a method of irradiating the surface of the glass plate with laser light along the planned cutting line and cleaving it with thermal stress.
  • a discharge electrode can be used instead of the laser light source.
  • the individual reinforced cover glasses (glass plates) 10 are cut into the same size.
  • a chamfering process may be provided in the pre-process of the polishing process.
  • a rotating grinding wheel is brought into contact with the end surface of the reinforced cover glass (glass plate) 10, and the ridge angle between the main planes 10A and 10B on the front and back of the reinforced cover glass (glass plate) 10 and the end surface 10C is obtained. This is done by grinding away the part.
  • chamfering can be performed by other methods.
  • the chamfering process is a process that is selectively performed. That is, the chamfering process is not necessarily a process that must be performed, but is a process that is selectively performed as necessary. However, by providing this chamfering step, cracking of the edge portion of the reinforced cover glass (glass plate) 10 can be effectively prevented, and the end face of the reinforced cover glass (glass plate) 10 can be strengthened.
  • the “end face” of the reinforced cover glass (glass plate) 10 means a cut surface when the base plate is cut, and the chamfered surface 11 is included when chamfering is performed after cutting. Shall be.
  • SYMBOLS 1 Touch sensor integrated reinforced cover glass, 10 ... Reinforced cover glass (glass plate), 11 ... Chamfered surface, 12 ... Input position detection electrode, 14 ... Light shielding layer, 16 ... Peripheral wiring, 18 ... Protective layer, 20 ... Laminated body, 22 ... spacing adjusting member, 30 ... brush polishing device, 32 ... laminated body holding section, 34 ... polishing brush, 34A ... shaft, 34B ... brush hair, 36 ... polishing liquid supply section, 38 ... polishing liquid

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Treatment Of Glass (AREA)
  • Position Input By Displaying (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

L'objet de la présente invention est de pourvoir à : un procédé de fabrication pour lamelle couvre-objet renforcée ayant une résistance mécanique supérieure à celle du verre classique ; une lamelle couvre-objet renforcée ; un procédé de fabrication pour lamelle couvre-objet renforcée comportant un capteur tactile intégré ; et une lamelle couvre-objet renforcée comportant un capteur tactile intégré. Pour ce faire, dans le procédé de fabrication pour lamelle couvre-objet renforcée selon la présente invention, une feuille en verre brut est d'abord découpée pour obtenir une feuille en verre (10) de taille souhaitée (étape de découpe) ; la surface d'extrémité (10c) de la feuille en verre est polie par un moyen de polissage (étape de polissage), pour éliminer ainsi les défauts de la surface d'extrémité (10c) qui sont susceptibles de provoquer des fissures, et réduire la rugosité de ladite surface d'extrémité (10c). La feuille en verre (10) est ensuite chimiquement renforcée au moyen d'un procédé de renforcement chimique. Par la suite, la surface d'extrémité (10c) de la feuille en verre (10) est gravée (étape de gravure). Le procédé de fabrication pour lamelle couvre-objet renforcée selon la présente invention comprend une étape de polissage avant l'étape de gravure, et ainsi, toute la surface d'extrémité (10c) peut être gravée de manière uniforme. Le procédé de fabrication pour lamelle couvre-objet renforcée selon la présente invention permet par conséquent d'obtenir une lamelle couvre-objet renforcée ayant une résistance à la flexion supérieure à celle du verre classique.
PCT/JP2013/069324 2012-07-17 2013-07-16 Procédé de fabrication pour lamelle couvre-objet renforcée, et lamelle couvre-objet renforcée WO2014013996A1 (fr)

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JP2012-158818 2012-07-17
JP2012158818A JP2015171956A (ja) 2012-07-17 2012-07-17 強化カバーガラスの製造方法及び強化カバーガラス並びにタッチセンサ一体型強化カバーガラスの製造方法及びタッチセンサ一体型強化カバーガラス

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WO2016126657A1 (fr) * 2015-02-02 2016-08-11 Corning Incorporated Procédés permettant de renforcer des bords d'articles en verre feuilleté et articles en verre feuilleté formés par lesdits procédés
KR101684344B1 (ko) * 2015-09-25 2016-12-08 주식회사 도우인시스 유리의 굴곡강도 향상 방법
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WO2020257034A1 (fr) * 2019-06-20 2020-12-24 Corning Incorporated Procédé et appareil de finition de bord de substrats en verre mince à haute résistance mécanique
CN115650595A (zh) * 2022-10-20 2023-01-31 济宁海富光学科技有限公司 玻璃盖板成型方法、成型设备及可存储介质

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WO2018117078A1 (fr) * 2016-12-22 2018-06-28 日本電気硝子株式会社 Plaque de verre renforcée, dispositif ayant une plaque de verre renforcée fixée à celui-ci, et procédé de fabrication de dispositif ayant une plaque de verre renforcée fixée à celui-ci
CN112125530A (zh) * 2020-09-11 2020-12-25 北京如影智能科技有限公司 一种玻璃开关面板的制作方法和装置

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US10974990B2 (en) 2014-09-12 2021-04-13 Schott Glass Technologies (Suzhou) Co. Ltd. Ultrathin chemically toughened glass article and method for the production of such a glass article
CN107074630A (zh) * 2014-09-12 2017-08-18 肖特玻璃科技(苏州)有限公司 超薄化学钢化玻璃制品和用于生产这种玻璃制品的方法
JP2017529304A (ja) * 2014-09-12 2017-10-05 ショット グラス テクノロジーズ （スゾウ） カンパニー リミテッドＳｃｈｏｔｔ Ｇｌａｓｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ （Ｓｕｚｈｏｕ） Ｃｏ．， Ｌｔｄ． 超薄板化学強化ガラス物品およびそのようなガラス物品の製造方法
CN104308673A (zh) * 2014-11-17 2015-01-28 合肥鑫晟光电科技有限公司 一种显示玻璃的磨边方法及装置
WO2016126657A1 (fr) * 2015-02-02 2016-08-11 Corning Incorporated Procédés permettant de renforcer des bords d'articles en verre feuilleté et articles en verre feuilleté formés par lesdits procédés
US11389919B2 (en) 2015-02-02 2022-07-19 Corning Incorporated Methods for strengthening edges of laminated glass articles and laminated glass articles formed therefrom
CN107428599A (zh) * 2015-02-02 2017-12-01 康宁股份有限公司 强化层压玻璃制品边缘的方法及由此形成的层压玻璃制品
US10384324B2 (en) 2015-02-02 2019-08-20 Corning Incorporated Methods for strengthening edges of laminated glass articles and laminated glass articles formed therefrom
CN107428599B (zh) * 2015-02-02 2020-10-27 康宁股份有限公司 强化层压玻璃制品边缘的方法及由此形成的层压玻璃制品
WO2016194785A1 (fr) * 2015-05-29 2016-12-08 旭硝子株式会社 Verre chimiquement renforcé
KR101684344B1 (ko) * 2015-09-25 2016-12-08 주식회사 도우인시스 유리의 굴곡강도 향상 방법
WO2020257034A1 (fr) * 2019-06-20 2020-12-24 Corning Incorporated Procédé et appareil de finition de bord de substrats en verre mince à haute résistance mécanique
CN114051438A (zh) * 2019-06-20 2022-02-15 康宁公司 用于高机械强度薄玻璃基板的边缘精整的方法和设备
CN115650595A (zh) * 2022-10-20 2023-01-31 济宁海富光学科技有限公司 玻璃盖板成型方法、成型设备及可存储介质
CN115650595B (zh) * 2022-10-20 2024-04-26 济宁海富光学科技有限公司 玻璃盖板成型方法、成型设备及可存储介质

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