US20160244353A1 - Method for producing glass sheet with bent portion and glass sheet with bent portion - Google Patents
Method for producing glass sheet with bent portion and glass sheet with bent portion Download PDFInfo
- Publication number
- US20160244353A1 US20160244353A1 US15/143,868 US201615143868A US2016244353A1 US 20160244353 A1 US20160244353 A1 US 20160244353A1 US 201615143868 A US201615143868 A US 201615143868A US 2016244353 A1 US2016244353 A1 US 2016244353A1
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- United States
- Prior art keywords
- glass sheet
- flattened
- bent
- flattened portion
- bent portion
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- Abandoned
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0307—Press-bending involving applying local or additional heating, cooling or insulating means
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/0066—Re-forming shaped glass by bending
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/025—Re-forming glass sheets by bending by gravity
- C03B23/0256—Gravity bending accelerated by applying mechanical forces, e.g. inertia, weights or local forces
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/025—Re-forming glass sheets by bending by gravity
- C03B23/0258—Gravity bending involving applying local or additional heating, cooling or insulating means
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0302—Re-forming glass sheets by bending by press-bending between shaping moulds between opposing full-face shaping moulds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
- C03B40/005—Fabrics, felts or loose covers
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
- C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
- C03C3/115—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron
- C03C3/118—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron containing aluminium
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- 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
- G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
-
- 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
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
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- 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
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/2419—Fold at edge
- Y10T428/24264—Particular fold structure [e.g., beveled, etc.]
Definitions
- This invention relates to a method for producing a glass sheet with a bent portion and a glass sheet with a bent portion.
- a glass sheet is used as a front surface layer of a mobile flat panel display.
- Patent Literature 1 JP-A-2010-30859
- a conceivable method for producing a glass sheet with a bent portion is a method of press-forming a flat glass sheet as described in, for example, Patent Literature 1.
- press forming is performed by heating the entire flat glass sheet to its softening point or above and pressing the entire glass sheet using forming dies, so that the flattened portion of the resultant glass sheet may be likely to have low flatness and low smoothness.
- a principal object of the present invention is to provide a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness.
- a method for producing a glass sheet with a bent portion according to the present invention is directed to a method for producing a glass sheet including a flattened portion and a bent portion continued to the flattened portion.
- a flat glass sheet is radiationally heated with a first portion of the flat glass sheet held between first and second heat-insulating members. And then, a second portion of the flat glass sheet not held between the first and second heat-insulating members is bent.
- the flat glass sheet is preferably heated so that the first portion thereof has a temperature below the softening point of the flat glass sheet.
- the flat glass sheet is preferably heated so that the second portion of the flat glass sheet reaches a higher temperature than the first portion thereof.
- an entire region of the second portion is preferably heated.
- the flat glass sheet used is preferably a flat glass sheet having a linear coefficient of thermal expansion of 120 ⁇ 10 ⁇ 7 /° C. or less at 30° C. to 380° C.
- the heat-insulating member include a through hole and the heating and bending be performed while a coolant is fed through the through hole.
- the heat-insulating members preferably have a lower thermal conductivity than the flat glass sheet.
- the heat-insulating members are preferably formed of ceramic material.
- the second portion is preferably bent with the flat glass sheet pressed by the first and second heat-insulating members.
- a glass sheet with a bent portion includes: a flattened portion substantially in the shape of a flat sheet; and a bent portion continued to an end region of the flattened portion in a transverse direction thereof.
- a flattened portion substantially in the shape of a flat sheet
- a bent portion continued to an end region of the flattened portion in a transverse direction thereof.
- Front and back surfaces of the flattened portion are preferably unground surfaces.
- a front surface of the end region of the flattened portion in the transverse direction is preferably flush with a front surface of the middle region of the flattened portion in the transverse direction.
- the end region of the flattened portion in the transverse direction may be provided to extend along a direction inclined toward a bent-away side of the bent portion relative to a direction of extension of the middle region of the flattened portion in the transverse direction.
- the back surface of the flattened portion may be formed of a curved surface having a radius of curvature of 1000 mm or more.
- the glass sheet with a bent portion according to the present invention may further includes a flange continued to an opposite end of the bent portion to the flattened portion and having a shape of a substantially flat sheet.
- the angle formed between a direction of extension of a back surface of the flange and a direction of extension of a back surface of the end region of the flattened portion in the transverse direction may be larger than 90°.
- the present invention can provide a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness.
- FIG. 1 is a schematic perspective view of a glass sheet with a bent portion, which has been produced in an embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view for illustrating a production step for the glass sheet with the bent portion in the above embodiment of the present invention.
- FIG. 3 is a schematic cross-sectional view for illustrating another production step for the glass sheet with the bent portion in the above embodiment of the present invention.
- FIG. 4 is a schematic cross-sectional view for illustrating a production step for a glass sheet with a bent portion in a reference example.
- FIG. 5 is a schematic cross-sectional view of a glass sheet with a bent portion, which will be produced in the reference example.
- FIG. 6 is a schematic cross-sectional view of part of the glass sheet with the bent portion, which has been produced in the above embodiment of the present invention.
- FIG. 7 is a schematic cross-sectional view of a glass sheet with a bent portion according to a first modification.
- FIG. 8 is a schematic cross-sectional view of a glass sheet with a bent portion according to a second modification.
- FIG. 9 is a schematic cross-sectional view of a glass sheet with a bent portion according to a third modification.
- FIG. 10 is a schematic cross-sectional view for illustrating a production step for a glass sheet with a bent portion in a fourth modification.
- the glass sheet 1 includes first to third flattened portions 11 to 13 and first and second bent portions 14 , 15 .
- One edge of the first flattened portion 11 in the transverse direction thereof and the second flattened portion 12 are connected by the first bent portion 14 .
- the other edge of the first flattened portion 11 in the transverse direction thereof and the third flattened portion 13 are connected by the second bent portion 15 .
- the first and second bent portions 14 , 15 may have a cross-sectional shape of, for example, an arc or an elliptic arc.
- the thickness of the first and second bent portions 14 , 15 is preferably substantially equal to that of the first to third flattened portions 11 to 13 .
- the glass sheet 1 can be used as a housing of a mobile flat panel display, such as a smartphone or a tablet personal computer (tablet PC).
- the thickness of the glass sheet 1 can be, for example, about 0.2 mm to about 2 mm and preferably about 0.3 mm to about 1.8 mm.
- the glass sheet 1 is a mobile display glass cover for use in a mobile display
- the surface roughness (Ra) of the outside surfaces of the bent portions 14 , 15 and flattened portions 12 , 13 located laterally of the mobile display body is preferably at least partly larger than the surface roughness (Ra) of the outside surface of the first flattened portion 11 located at the top of the display.
- the mobile display can be improved in graspability.
- the surface roughness (Ra) of at least part of the outside surfaces of the bent portions 14 , 15 and the flattened portions 12 , 13 is preferably equal to or more than 100 times the surface roughness (Ra) of the outside surface of the first flattened portion 11 and more preferably equal to or more than 200 times that surface roughness.
- the surface roughness (Ra) of at least part of the outside surfaces of the bent portions 14 , 15 and the flattened portions 12 , 13 is preferably 0.5 ⁇ m or more and more preferably 0.8 ⁇ m or more.
- the surface roughness (Ra) of the first flattened portion 11 is preferably 0.01 ⁇ m or less and more preferably 0.008 ⁇ m or less.
- the surface roughness (Ra) used herein refers to the arithmetic mean roughness (Ra) defined in JIS B0601-2001.
- the graspability of the mobile display may be improved by providing irregularities on at least part of the outside surfaces of the bent portions 14 , 15 and the flattened portions 12 , 13 .
- the distance between the top and foot of the irregularities in the normal direction of the flattened portions 12 , 13 is preferably 50 ⁇ m or more and more preferably 70 ⁇ m or more.
- the distance between the top and foot of the irregularities is preferably not more than 1 ⁇ 2 of the average thickness of the flattened portions 12 , 13 .
- the flattened portions 12 , 13 can be improved in graspability while being prevented from decreasing in rigidity.
- the irregularities may be linear or may be formed in the shape of a pyramid, a cone, a truncated pyramid, a prism or a column.
- the surface roughness (Ra) of at least part of the outside surfaces of the bent portions 14 , 15 and the flattened portions 12 , 13 is larger than the surface roughness (Ra) of the outside surface of the first flattened portion 11 located at the top of the display.
- the glass sheet 1 can be formed of, for example, silicate glass or borosilicate glass. More specifically, a glass sheet 1 can be used which has a composition, in % by mass, of 50 to 80% SiO 2 , 5 to 25% Al 2 O 3 , 0 to 15% B 2 O 3 , 0 to 3.5% Li 2 O, 1 to 20% Na 2 O, 0 to 10% K 2 O, 5 to 25% Li 2 O+Na 2 O+K 2 O, 0 to 12% MgO, 0 to 10% CaO, 0 to 5% SrO, 0 to 5% BaO, 0 to 6% ZnO, 0 to 10% ZrO 2 , 0 to 10% P 2 O 5 , and 0 to 3% As 2 O 3 +Sb 2 O 3 +SnO 2 +F+Cl+SO 3 .
- a flat glass sheet 20 shown in FIG. 2 is prepared.
- the flat glass sheet 20 is a glass sheet for use in forming a glass sheet 1 .
- the thickness of the flat glass sheet 20 is substantially equal to the thickness of the glass sheet 1 .
- the flat glass sheet 20 is radiationally heated with a first portion 21 thereof held between first and second heat-insulating members 31 , 32 . And then, second portions 22 a, 22 b of the flat glass sheet 20 not held between the first and second heat-insulating members 31 , 32 are bent by pressing them using pressing tools 51 , 52 .
- a glass sheet 1 can be obtained which has bent portions 14 , 15 formed at least partly of the second portions 22 a, 22 b, respectively, and a first flattened portion 11 formed of the first portion 21 .
- the method for producing the glass sheet 1 will be described in further detail below. First, a forming apparatus 30 for use in producing the glass sheet 1 is described.
- the forming apparatus 30 includes a forming chamber 33 .
- the forming chamber 33 is internally provided with a heater 41 .
- the heater 41 radiates heat rays. Therefore, the forming apparatus 30 can radiationally heat an object placed in the forming chamber 33 .
- the first and second heat-insulating members 31 , 32 are disposed in the forming chamber 33 .
- the first and second heat-insulating members 31 , 32 are members for reducing the transfer of radiation heat to the first portion 21 of the flat glass sheet 20 .
- the first and second heat-insulating members 31 , 32 preferably have a lower thermal conductivity than the flat glass sheet 20 .
- the first and second heat-insulating members 31 , 32 preferably block heat rays emitted from the heater 41 .
- the first and second heat-insulating members 31 , 32 can be formed of, for example, ceramic material containing as a major ingredient alumina, silicon carbide or diatomite.
- Each of the heat-insulating members 31 , 32 includes at least one through hole 31 a, 32 a.
- a coolant such as air, is fed through these through holes 31 a, 32 a during heating and forming.
- the temperature of the heat-insulating members 31 , 32 can be controlled. For example, an undesirable temperature rise of the heat-insulating members 31 , 32 can be prevented.
- both the two heat-insulating members are provided with their respective through holes through which a coolant is to be fed.
- the present invention is not limited to this configuration. Only one of the two heat-insulating members may be provided with such a through hole or none of the two heat-insulating members may be provided with such a through hole.
- the flat glass sheet 20 In forming the flat glass sheet 20 , first, the flat glass sheet 20 is placed between the first heat-insulating member 31 and the second heat-insulating member 32 and the first portion 21 of the flat glass sheet 20 is held between the first and second heat-insulating members 31 , 32 . Portions of the flat glass sheet 20 other than the first portion 21 , which are not held between the first and second heat-insulating members 31 , 32 , form the second portions 22 a, 22 b.
- the heater 41 is actuated to radiationally heat the flat glass sheet 20 (heating step).
- the second portions 22 a, 22 b are bent by pressing them using the pressing tools 51 , 52 provided on both sides of the first and second heat-insulating members 31 , 32 (forming step).
- the glass sheet 1 shown in FIG. 1 can be obtained.
- Each pressing tool 51 , 52 may be formed of, for example, a rod.
- the second portions 22 a, 22 b may be bent, for example, under their own weights.
- the flat glass sheet 20 is radiationally heated with the first portion 21 thereof held between the first and second heat-insulating members 31 , 32 . Therefore, the temperature rise of the first portion 21 can be reduced. Thus, it can be easily implemented to increase the temperature of the second portions 22 a, 22 b not held between the first and second heat-insulating members 31 , 32 while reducing the temperature rise of the first portion 21 . In addition, even if the second portions 22 a, 22 b reach a deformable temperature, the first portion 21 can be held at a low temperature so as not to change the surface condition. Hence, a glass sheet 1 can be produced in which the first flattened portion 11 has high flatness and high smoothness. Furthermore, since the first flattened portion 11 has high flatness and high smoothness, the front and back surfaces of the first flattened portion 11 can be unground surfaces. Thus, a glass sheet 1 having high mechanical strength can be produced.
- the flat glass sheet 20 is preferably heated so that the first portion 21 thereof reaches a temperature equal to or higher than the strain point of the flat glass sheet 20 .
- the flat glass sheet 20 is preferably heated so that the first portion 21 has a temperature below the softening point of the flat glass sheet 20 and, more preferably, the flat glass sheet 20 is heated so that the first portion 21 has a temperature equal to or lower than the glass transition point of the flat glass sheet 20 plus 100° C.
- the flat glass sheet 20 is preferably heated so that the second portions 22 a, 22 b reach a higher temperature than the first portion 21 .
- the entire regions of the second portions 22 a 22 b are preferably heated.
- the second portions 22 a, 22 b can be bent, using the pressing tools 51 , 52 , at a relatively low temperature within a temperature range in which the flat glass sheet 20 can be deformed. Therefore, it can be prevented that indentations are produced on the second portions 22 a, 22 b by the pressing tools 51 , 52 .
- the time taken for the second portions 22 a, 22 b to reach a deformable temperature is shorter than the time for the first portion 21 to reach a temperature equal to or higher than the strain point of the flat glass sheet 20 . Therefore, it is necessary to continue to heat the flat glass sheet 20 until the first portion 21 reaches a temperature equal to or higher than the strain point of the flat glass sheet 20 .
- a coolant be fed through the through holes 31 a, 32 a to reduce the temperature rise of the first and second heat-insulating members 31 , 32 . This makes it easy to heat the flat glass sheet 20 to avoid that the temperature of the first portion 21 is above the softening point of the flat glass sheet 20 , and thus makes it easy to further increase the flatness and smoothness of the first flattened portion 11 .
- the first portion 21 becomes different in amount of thermal expansion from the second portions 22 a, 22 b.
- the flat glass sheet 20 preferably has a small coefficient of thermal expansion.
- the linear coefficient of thermal expansion of the flat glass sheet 20 at 30° C. to 380° C. is preferably 120 ⁇ 10 ⁇ 7 /° C. or less, more preferably 105 ⁇ 10 ⁇ 7 /° C. or less, still more preferably 100 ⁇ 10 ⁇ 7 /° C. or less, even more preferably 90 ⁇ 10 ⁇ 7 /° C., particularly preferably 85 ⁇ 10 ⁇ 7 /° C., and most preferably 80 ⁇ 10 ⁇ 7 /° C.
- the flat glass sheet 20 placed on the second heat-insulating member 32 is bent using the pressing tools 51 , 52 .
- the flat glass sheet 20 will not be given a shape fully conforming to the second heat-insulating member 32 , because of the rigidity of the flat glass sheet 20 .
- the flat glass sheet 20 will be given a shape in which the ends of the first flattened portion 111 next to the bent portions 114 , 115 are raised from the second heat-insulating member 32 .
- the flat glass sheet 20 is given a shape in which the ends of the first flattened portion 111 next to the bent portions 114 , 115 are raised from the second heat-insulating member 32 , and when the resultant glass sheet 100 is used as a display and the ends of the first flattened portion 111 are located in the display region, the display quality of the display will be decreased. On the other hand, when the ends of the first flattened portion 111 are located outside the display region, the area ratio of the display region in the display will be decreased.
- the second portions 22 a, 22 b of the flat glass sheet 20 are bent with the first portion 21 thereof held between the first and second heat-insulating members 31 , 32 . Therefore, the temperature rise of the first portion 21 is reduced. The first portion 21 is less likely to reach a deformable temperature. In addition, the deformation of the first portion 21 is restricted by the first and second heat-insulating members 31 , 32 . Therefore, the first portion 21 can be held in a shape conforming to the second heat-insulating member 32 . Thus, as shown in FIG.
- the first flattened portion 11 when viewed in cross section along the thickness direction, no gap is created between the imaginary line L tangent to the back surface of a middle region of the first flattened portion 11 in the transverse direction and end regions 11 a of the first flattened portion 11 in the transverse direction.
- the back surface of the middle region of the first flattened portion 11 in the transverse direction is substantially flush with the back surfaces of the end regions 11 a.
- the front surface of the middle region of the first flattened portion 11 in the transverse direction is substantially flush with the front surfaces of the end regions 11 a.
- the first flattened portion 11 has high flatness and high smoothness and, therefore, the front and back surfaces of the first flattened portion 11 can be unground surfaces.
- a glass sheet 1 having high mechanical strength can be provided.
- a display can be obtained which has high mechanical strength and in which even if the end regions 11 a of the first flattened portion 11 are located in the display region, the display quality is less likely to be decreased and superior and the area ratio of the display region is high.
- each end region 11 a of the first flattened portion 11 in the transverse direction is preferably provided to extend along a direction inclined toward a bent-away side of the associated bent portion 14 , 15 (along the direction y inclined downward in FIG. 7 ) relative to the direction x of extension of the middle region of the first flattened portion 11 in the transverse direction.
- the angle formed between the directions x and y is preferably 178° to 180° and more preferably 179° to 180°. If the angle formed between the directions x and y is too large, this makes it less likely to achieve the effect of more reliably avoiding the creation of a gap between the imaginary line L and the end regions 11 a of the first flattened portion 11 in the transverse direction. If the angle formed between the directions x and y is too small, the resultant glass sheet may be inadequate for use as a display.
- the shape of the second heat-insulating member 32 is preferably made different from that in the above embodiment and, for example, as shown in FIG. 8 , the back surface of the first flattened portion 11 is preferably formed of a gently curved surface raised opposite to the direction of extension of the second and third flattened portions 12 , 13 and having a radius of curvature of not less than 1000 mm and more preferably not less than 5000 mm.
- the radius of curvature of the back surface of the first flattened portion 11 is preferably not more than 10000 mm and more preferably not more than 6000 mm.
- a surface having a radius of curvature of not less than 800 mm is considered as a flat surface and a sheet portion whose principal surface has a radius of curvature of not less than 800 mm is considered as a flattened portion.
- the shape of the second heat-insulating member 32 is preferably made different from that in the above embodiment and, for example, as shown in FIG. 9 , the angle ⁇ formed between the direction of extension of each of the back surfaces of the flattened portions 12 , 13 and the direction of extension of the back surface of the associated end region 11 a of the first flattened portion 11 in the transverse direction (the angle formed between the tangent line Z of each of the back surfaces of the second and third flattened portion 12 , 13 and the imaginary line L) is preferably larger than 90° and is more preferably 90.1° or more.
- the angle formed between the direction of extension of each of the back surfaces of the flattened portions (flanges) 12 , 13 and the direction of extension of the back surface of the associated end region 11 a of the first flattened portion 11 in the transverse direction is preferably not more than 95° and more preferably not more than 93°.
- a pressing mechanism 60 be provided and the second portions 22 a, 22 b be deformed with the flat glass sheet 20 pressed by the first and second heat-insulating members 31 , 32 .
- the pressing tools 51 , 52 are preferably made of a heat-insulating material, such as ceramic material. From the viewpoint of preventing breakage due to thermal shock, the pressing tools 51 , 52 are preferably preheated to a temperature near the temperature of the flat glass sheet 20 prior to the pressing.
- the shape of the bent portions 14 , 15 is generally determined depending upon the shape of the corners of the second heat-insulating member 32 . Therefore, the shape of the bent portions 14 , 15 can be easily changed by appropriately changing the shape of the corners of the second heat-insulating member 32 .
- the present invention is not limited to this configuration.
- the glass sheet produced by the present invention may have a single bent portion.
Abstract
Provided is a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness. A flat glass sheet 20 is radiationally heated with a first portion 21 thereof held between first and second heat-insulating members 31, 32. And then, a second portion 22 a, 22 b of the flat glass sheet 20 not held between the first and second heat-insulating members 31, 32 is bent.
Description
- This invention relates to a method for producing a glass sheet with a bent portion and a glass sheet with a bent portion.
- In recent years, mobile flat panel displays, such as smartphones and tablet personal computers (tablet PCs), are rapidly spreading. Generally, a glass sheet is used as a front surface layer of a mobile flat panel display.
- Patent Literature 1: JP-A-2010-30859
- For purposes of esthetic improvement and the like of the mobile flat panel display, there is, for example, a demand to cover the front and side surfaces of the mobile flat panel display with a single glass sheet. In such a case, a glass sheet having at least one flattened portion and bent portions is necessary.
- A conceivable method for producing a glass sheet with a bent portion is a method of press-forming a flat glass sheet as described in, for example,
Patent Literature 1. However, press forming is performed by heating the entire flat glass sheet to its softening point or above and pressing the entire glass sheet using forming dies, so that the flattened portion of the resultant glass sheet may be likely to have low flatness and low smoothness. - A principal object of the present invention is to provide a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness.
- A method for producing a glass sheet with a bent portion according to the present invention is directed to a method for producing a glass sheet including a flattened portion and a bent portion continued to the flattened portion. In the method for producing a glass sheet with a bent portion according to the present invention, a flat glass sheet is radiationally heated with a first portion of the flat glass sheet held between first and second heat-insulating members. And then, a second portion of the flat glass sheet not held between the first and second heat-insulating members is bent.
- In the method for producing a glass sheet with a bent portion according to the present invention, the flat glass sheet is preferably heated so that the first portion thereof has a temperature below the softening point of the flat glass sheet.
- In the method for producing a glass sheet with a bent portion according to the present invention, the flat glass sheet is preferably heated so that the second portion of the flat glass sheet reaches a higher temperature than the first portion thereof.
- In the method for producing a glass sheet with a bent portion according to the present invention, an entire region of the second portion is preferably heated.
- In the method for producing a glass sheet with a bent portion according to the present invention, the flat glass sheet used is preferably a flat glass sheet having a linear coefficient of thermal expansion of 120×10−7/° C. or less at 30° C. to 380° C.
- In the method for producing a glass sheet with a bent portion according to the present invention, it is preferred that the heat-insulating member include a through hole and the heating and bending be performed while a coolant is fed through the through hole.
- In the method for producing a glass sheet with a bent portion according to the present invention, the heat-insulating members preferably have a lower thermal conductivity than the flat glass sheet.
- In the method for producing a glass sheet with a bent portion according to the present invention, the heat-insulating members are preferably formed of ceramic material.
- The second portion is preferably bent with the flat glass sheet pressed by the first and second heat-insulating members.
- A glass sheet with a bent portion according to the present invention includes: a flattened portion substantially in the shape of a flat sheet; and a bent portion continued to an end region of the flattened portion in a transverse direction thereof. When viewed in cross section along a thickness direction of the glass sheet, no gap is created between an imaginary line tangent to a back surface of a middle region of the flattened portion in the transverse direction and the end region of the flattened portion in the transverse direction.
- Front and back surfaces of the flattened portion are preferably unground surfaces.
- A front surface of the end region of the flattened portion in the transverse direction is preferably flush with a front surface of the middle region of the flattened portion in the transverse direction.
- The end region of the flattened portion in the transverse direction may be provided to extend along a direction inclined toward a bent-away side of the bent portion relative to a direction of extension of the middle region of the flattened portion in the transverse direction.
- The back surface of the flattened portion may be formed of a curved surface having a radius of curvature of 1000 mm or more.
- The glass sheet with a bent portion according to the present invention may further includes a flange continued to an opposite end of the bent portion to the flattened portion and having a shape of a substantially flat sheet. In this case, the angle formed between a direction of extension of a back surface of the flange and a direction of extension of a back surface of the end region of the flattened portion in the transverse direction may be larger than 90°.
- The present invention can provide a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness.
-
FIG. 1 is a schematic perspective view of a glass sheet with a bent portion, which has been produced in an embodiment of the present invention. -
FIG. 2 is a schematic cross-sectional view for illustrating a production step for the glass sheet with the bent portion in the above embodiment of the present invention. -
FIG. 3 is a schematic cross-sectional view for illustrating another production step for the glass sheet with the bent portion in the above embodiment of the present invention. -
FIG. 4 is a schematic cross-sectional view for illustrating a production step for a glass sheet with a bent portion in a reference example. -
FIG. 5 is a schematic cross-sectional view of a glass sheet with a bent portion, which will be produced in the reference example. -
FIG. 6 is a schematic cross-sectional view of part of the glass sheet with the bent portion, which has been produced in the above embodiment of the present invention. -
FIG. 7 is a schematic cross-sectional view of a glass sheet with a bent portion according to a first modification. -
FIG. 8 is a schematic cross-sectional view of a glass sheet with a bent portion according to a second modification. -
FIG. 9 is a schematic cross-sectional view of a glass sheet with a bent portion according to a third modification. -
FIG. 10 is a schematic cross-sectional view for illustrating a production step for a glass sheet with a bent portion in a fourth modification. - Hereinafter, a description will be given of an exemplary preferred embodiment for working of the present invention. However, the following embodiment is merely illustrative. The present invention is not at all limited to the following embodiment.
- Throughout the drawings to which the embodiment and the like refer, elements having substantially the same functions will be referred to by the same reference signs. The drawings to which the embodiment and the like refer are schematically illustrated. The dimensional ratios and the like of objects illustrated in the drawings may be different from those of the actual objects. Different drawings may have different dimensional ratios and the like of the objects. Dimensional ratios and the like of specific objects should be determined in consideration of the following descriptions.
- This embodiment relates to a method for producing a
glass sheet 1 shown inFIG. 1 . Theglass sheet 1 includes first to thirdflattened portions 11 to 13 and first andsecond bent portions flattened portion 11 in the transverse direction thereof and the secondflattened portion 12 are connected by thefirst bent portion 14. The other edge of the firstflattened portion 11 in the transverse direction thereof and the thirdflattened portion 13 are connected by thesecond bent portion 15. The first andsecond bent portions second bent portions flattened portions 11 to 13. - No particular limitation is placed on the usage of the
glass sheet 1. For example, theglass sheet 1 can be used as a housing of a mobile flat panel display, such as a smartphone or a tablet personal computer (tablet PC). In using theglass sheet 1 like this, the thickness of theglass sheet 1 can be, for example, about 0.2 mm to about 2 mm and preferably about 0.3 mm to about 1.8 mm. - Furthermore, if the
glass sheet 1 is a mobile display glass cover for use in a mobile display, the surface roughness (Ra) of the outside surfaces of thebent portions flattened portions flattened portion 11 located at the top of the display. In this case, the mobile display can be improved in graspability. From the viewpoint of further improving the graspability of the mobile display, the surface roughness (Ra) of at least part of the outside surfaces of thebent portions portions portion 11 and more preferably equal to or more than 200 times that surface roughness. Specifically, the surface roughness (Ra) of at least part of the outside surfaces of thebent portions portions portion 11 is preferably 0.01 μm or less and more preferably 0.008 μm or less. The surface roughness (Ra) used herein refers to the arithmetic mean roughness (Ra) defined in JIS B0601-2001. - Alternatively, the graspability of the mobile display may be improved by providing irregularities on at least part of the outside surfaces of the
bent portions portions portions portions portions - No particular limitation is placed on the shape of the irregularities. The irregularities may be linear or may be formed in the shape of a pyramid, a cone, a truncated pyramid, a prism or a column.
- Furthermore, if irregularities are provided on at least part of the outside surfaces of the
bent portions portions bent portions portions portion 11 located at the top of the display. - No particular limitation is placed on the composition of glass forming the
glass sheet 1 and it can be appropriately selected depending upon the properties required for theglass sheet 1. Theglass sheet 1 can be formed of, for example, silicate glass or borosilicate glass. More specifically, aglass sheet 1 can be used which has a composition, in % by mass, of 50 to 80% SiO2, 5 to 25% Al2O3, 0 to 15% B2O3, 0 to 3.5% Li2O, 1 to 20% Na2O, 0 to 10% K2O, 5 to 25% Li2O+Na2O+K2O, 0 to 12% MgO, 0 to 10% CaO, 0 to 5% SrO, 0 to 5% BaO, 0 to 6% ZnO, 0 to 10% ZrO2, 0 to 10% P2O5, and 0 to 3% As2O3+Sb2O3+SnO2+F+Cl+SO3. - Next, a description will be given of a method for producing the
glass sheet 1 in this embodiment with reference mainly toFIGS. 2 and 3 . - First, a
flat glass sheet 20 shown inFIG. 2 is prepared. Theflat glass sheet 20 is a glass sheet for use in forming aglass sheet 1. The thickness of theflat glass sheet 20 is substantially equal to the thickness of theglass sheet 1. - In this embodiment, the
flat glass sheet 20 is radiationally heated with afirst portion 21 thereof held between first and second heat-insulatingmembers second portions flat glass sheet 20 not held between the first and second heat-insulatingmembers pressing tools glass sheet 1 can be obtained which has bentportions second portions portion 11 formed of thefirst portion 21. - The method for producing the
glass sheet 1 will be described in further detail below. First, a formingapparatus 30 for use in producing theglass sheet 1 is described. - The forming
apparatus 30 includes a formingchamber 33. The formingchamber 33 is internally provided with aheater 41. Theheater 41 radiates heat rays. Therefore, the formingapparatus 30 can radiationally heat an object placed in the formingchamber 33. - The first and second heat-insulating
members chamber 33. The first and second heat-insulatingmembers first portion 21 of theflat glass sheet 20. In order to reduce the transfer of radiation heat to thefirst portion 21 of theflat glass sheet 20, the first and second heat-insulatingmembers flat glass sheet 20. Furthermore, the first and second heat-insulatingmembers heater 41. The first and second heat-insulatingmembers - Each of the heat-insulating
members hole holes members members - In this embodiment, an example is described in which both the two heat-insulating members are provided with their respective through holes through which a coolant is to be fed. However, the present invention is not limited to this configuration. Only one of the two heat-insulating members may be provided with such a through hole or none of the two heat-insulating members may be provided with such a through hole.
- In forming the
flat glass sheet 20, first, theflat glass sheet 20 is placed between the first heat-insulatingmember 31 and the second heat-insulatingmember 32 and thefirst portion 21 of theflat glass sheet 20 is held between the first and second heat-insulatingmembers flat glass sheet 20 other than thefirst portion 21, which are not held between the first and second heat-insulatingmembers second portions - With the
first portion 21 of theflat glass sheet 20 held between the first and second heat-insulatingmembers heater 41 is actuated to radiationally heat the flat glass sheet 20 (heating step). - And then, as shown in
FIG. 3 , thesecond portions pressing tools members 31, 32 (forming step). Thus, theglass sheet 1 shown inFIG. 1 can be obtained. - No particular limitation is placed on the type of the
pressing tools flat glass sheet 20. Eachpressing tool - Alternatively, without use of the
pressing tools second portions - As thus far described, in this embodiment, the
flat glass sheet 20 is radiationally heated with thefirst portion 21 thereof held between the first and second heat-insulatingmembers first portion 21 can be reduced. Thus, it can be easily implemented to increase the temperature of thesecond portions members first portion 21. In addition, even if thesecond portions first portion 21 can be held at a low temperature so as not to change the surface condition. Hence, aglass sheet 1 can be produced in which the first flattenedportion 11 has high flatness and high smoothness. Furthermore, since the first flattenedportion 11 has high flatness and high smoothness, the front and back surfaces of the first flattenedportion 11 can be unground surfaces. Thus, aglass sheet 1 having high mechanical strength can be produced. - From the viewpoint of reducing the strain of the
flat glass sheet 20, theflat glass sheet 20 is preferably heated so that thefirst portion 21 thereof reaches a temperature equal to or higher than the strain point of theflat glass sheet 20. In addition, from the viewpoint of further increasing the flatness and smoothness of the first flattenedportion 11, theflat glass sheet 20 is preferably heated so that thefirst portion 21 has a temperature below the softening point of theflat glass sheet 20 and, more preferably, theflat glass sheet 20 is heated so that thefirst portion 21 has a temperature equal to or lower than the glass transition point of theflat glass sheet 20 plus 100° C. - Furthermore, from the viewpoint of facilitating the bending of the
second portions flat glass sheet 20 is preferably heated so that thesecond portions first portion 21. - Moreover, the entire regions of the
second portions 22 a 22 b are preferably heated. Thus, thesecond portions pressing tools flat glass sheet 20 can be deformed. Therefore, it can be prevented that indentations are produced on thesecond portions pressing tools - Moreover, the time taken for the
second portions first portion 21 to reach a temperature equal to or higher than the strain point of theflat glass sheet 20. Therefore, it is necessary to continue to heat theflat glass sheet 20 until thefirst portion 21 reaches a temperature equal to or higher than the strain point of theflat glass sheet 20. - Furthermore, it is preferred that a coolant be fed through the through
holes members flat glass sheet 20 to avoid that the temperature of thefirst portion 21 is above the softening point of theflat glass sheet 20, and thus makes it easy to further increase the flatness and smoothness of the first flattenedportion 11. - When a temperature difference is produced between the
first portion 21 and thesecond portions first portion 21 becomes different in amount of thermal expansion from thesecond portions - Specifically, the amount of thermal expansion of the
first portion 21 becomes lower than that of thesecond portions flat glass sheet 20 may cause distortion, such as warpage or waviness. Therefore, from the viewpoint of reducing the distortion of theflat glass sheet 20 to obtain aglass sheet 1 having a high shape accuracy, theflat glass sheet 20 preferably has a small coefficient of thermal expansion. Specifically, the linear coefficient of thermal expansion of theflat glass sheet 20 at 30° C. to 380° C. is preferably 120×10−7/° C. or less, more preferably 105×10−7/° C. or less, still more preferably 100×10−7/° C. or less, even more preferably 90×10−7/° C., particularly preferably 85×10−7/° C., and most preferably 80×10−7/° C. - For example, as shown in
FIG. 4 , it is conceivable that without use of the first heat-insulatingmember 31, theflat glass sheet 20 placed on the second heat-insulatingmember 32 is bent using thepressing tools flat glass sheet 20 will not be given a shape fully conforming to the second heat-insulatingmember 32, because of the rigidity of theflat glass sheet 20. Specifically, as shown inFIG. 5 , theflat glass sheet 20 will be given a shape in which the ends of the first flattenedportion 111 next to thebent portions member 32. If theflat glass sheet 20 is given a shape in which the ends of the first flattenedportion 111 next to thebent portions member 32, and when theresultant glass sheet 100 is used as a display and the ends of the first flattenedportion 111 are located in the display region, the display quality of the display will be decreased. On the other hand, when the ends of the first flattenedportion 111 are located outside the display region, the area ratio of the display region in the display will be decreased. - In contrast, in this embodiment, the
second portions flat glass sheet 20 are bent with thefirst portion 21 thereof held between the first and second heat-insulatingmembers first portion 21 is reduced. Thefirst portion 21 is less likely to reach a deformable temperature. In addition, the deformation of thefirst portion 21 is restricted by the first and second heat-insulatingmembers first portion 21 can be held in a shape conforming to the second heat-insulatingmember 32. Thus, as shown inFIG. 6 , when viewed in cross section along the thickness direction, no gap is created between the imaginary line L tangent to the back surface of a middle region of the first flattenedportion 11 in the transverse direction and endregions 11 a of the first flattenedportion 11 in the transverse direction. The back surface of the middle region of the first flattenedportion 11 in the transverse direction is substantially flush with the back surfaces of theend regions 11 a. Furthermore, the front surface of the middle region of the first flattenedportion 11 in the transverse direction is substantially flush with the front surfaces of theend regions 11 a. In addition, the first flattenedportion 11 has high flatness and high smoothness and, therefore, the front and back surfaces of the first flattenedportion 11 can be unground surfaces. Thus, aglass sheet 1 having high mechanical strength can be provided. Hence, in the case of using theglass sheet 1 as a display, a display can be obtained which has high mechanical strength and in which even if theend regions 11 a of the first flattenedportion 11 are located in the display region, the display quality is less likely to be decreased and superior and the area ratio of the display region is high. - From the viewpoint of more reliably avoiding the creation of a gap between the imaginary line L and the
end regions 11 a of the first flattenedportion 11 in the transverse direction, the shape of the second heat-insulatingmember 32 is preferably made different from that in the above embodiment and, for example, as shown inFIG. 7 , eachend region 11 a of the first flattenedportion 11 in the transverse direction is preferably provided to extend along a direction inclined toward a bent-away side of the associatedbent portion 14, 15 (along the direction y inclined downward inFIG. 7 ) relative to the direction x of extension of the middle region of the first flattenedportion 11 in the transverse direction. The angle formed between the directions x and y is preferably 178° to 180° and more preferably 179° to 180°. If the angle formed between the directions x and y is too large, this makes it less likely to achieve the effect of more reliably avoiding the creation of a gap between the imaginary line L and theend regions 11 a of the first flattenedportion 11 in the transverse direction. If the angle formed between the directions x and y is too small, the resultant glass sheet may be inadequate for use as a display. - Furthermore, from the viewpoint of more reliably avoiding the creation of a gap between the imaginary line L and the
end regions 11 a of the first flattenedportion 11 in the transverse direction, the shape of the second heat-insulatingmember 32 is preferably made different from that in the above embodiment and, for example, as shown inFIG. 8 , the back surface of the first flattenedportion 11 is preferably formed of a gently curved surface raised opposite to the direction of extension of the second and third flattenedportions portion 11 is too large, this may make it less likely to achieve the effect of more reliably avoiding the creation of a gap between the imaginary line L and theend regions 11 a of the first flattenedportion 11 in the transverse direction. Therefore, the radius of curvature of the back surface of the first flattenedportion 11 is preferably not more than 10000 mm and more preferably not more than 6000 mm. - In the present invention, a surface having a radius of curvature of not less than 800 mm is considered as a flat surface and a sheet portion whose principal surface has a radius of curvature of not less than 800 mm is considered as a flattened portion.
- Moreover, from the viewpoint of more reliably avoiding the creation of a gap between the imaginary line L and the
end regions 11 a of the first flattenedportion 11 in the transverse direction, the shape of the second heat-insulatingmember 32 is preferably made different from that in the above embodiment and, for example, as shown inFIG. 9 , the angle θ formed between the direction of extension of each of the back surfaces of the flattenedportions end region 11 a of the first flattenedportion 11 in the transverse direction (the angle formed between the tangent line Z of each of the back surfaces of the second and third flattenedportion end region 11 a of the first flattenedportion 11 in the transverse direction is too large, the resultant glass sheet may be inadequate for use as a display. Therefore, the angle formed between the direction of extension of each of the back surfaces of the flattenedportions end region 11 a of the first flattenedportion 11 in the transverse direction is preferably not more than 95° and more preferably not more than 93°. - Furthermore, from the viewpoint of more reliably avoiding the creation of a gap between the imaginary line L and the
end regions 11 a of the first flattenedportion 11 in the transverse direction, it is preferred that, as shown inFIG. 10 , apressing mechanism 60 be provided and thesecond portions flat glass sheet 20 pressed by the first and second heat-insulatingmembers - From the viewpoint of increasing the flatness and smoothness of the second and third flattened
portions pressing tools pressing tools flat glass sheet 20 prior to the pressing. - The shape of the
bent portions member 32. Therefore, the shape of thebent portions member 32. - Although in the above embodiment an example has been described in which the first flattened
portion 11 is provided on both sides withbent portions -
- 1 . . . glass sheet
- 11 . . . first flattened portion
- 11 a . . . end region of first flattened portion
- 12 . . . second flattened portion
- 13 . . . third flattened portion
- 14 . . . first bent portion
- 15 . . . second bent portion
- 20 . . . flat glass sheet
- 21 . . . first portion
- 22 a, 22 b . . . second portion
- 30 . . . forming apparatus
- 31 . . . first heat-insulating member
- 32 . . . second heat-insulating member
- 31 a, 32 a . . . through hole
- 33 . . . forming chamber
- 41 . . . heater
- 51, 52 . . . pressing tool
- 60 . . . pressing mechanism
Claims (6)
1. A glass sheet with a bent portion, the glass sheet comprising:
a flattened portion substantially in in the shape of a flat sheet; and
a bent portion continued to an end region of the flattened portion in a transverse direction thereof,
wherein when viewed in cross section along a thickness direction of the glass sheet, no gap is created between an imaginary line tangent to a back surface of a middle region of the flattened portion in the transverse direction and the end region of the flattened portion in the transverse direction.
2. The glass sheet with a bent portion according to claim 1 , wherein front and back surfaces of the flattened portion are unground surfaces.
3. The glass sheet with a bent portion according to claim 1 , wherein a front surface of the end region of the flattened portion in the transverse direction is flush with a front surface of the middle region of the flattened portion in the transverse direction.
4. The glass sheet with a bent portion according to claim 1 , wherein the end region of the flattened portion in the transverse direction is provided to extend along a direction inclined toward a bent-away side of the bent portion relative to a direction of extension of the middle portion of the flattened portion in the transverse direction.
5. The glass sheet with a bent portion according to claim 1 , wherein the back surface of the flattened portion is formed of a curved surface having a radius of curvature of 1000 mm or more.
6. The glass sheet with a bent portion according to claim 1 , further comprising a flange continued to an opposite end of the bent portion to the flattened portion and having a shape of a substantially flat sheet,
wherein the angle formed between a direction of extension of a back surface of the flange and a direction of extension of a back surface of the end region of the flattened portion in the transverse direction is larger than 90°.
Priority Applications (1)
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US15/143,868 US20160244353A1 (en) | 2012-06-14 | 2016-05-02 | Method for producing glass sheet with bent portion and glass sheet with bent portion |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
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JP2012-134453 | 2012-06-14 | ||
JP2012134453 | 2012-06-14 | ||
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JP2013108162 | 2013-05-22 | ||
JP2013-108162 | 2013-05-22 | ||
US13/916,686 US9376337B2 (en) | 2012-06-14 | 2013-06-13 | Method for producing glass sheet with bent portion and glass sheet with bent portion |
US15/143,868 US20160244353A1 (en) | 2012-06-14 | 2016-05-02 | Method for producing glass sheet with bent portion and glass sheet with bent portion |
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US13/916,686 Division US9376337B2 (en) | 2012-06-14 | 2013-06-13 | Method for producing glass sheet with bent portion and glass sheet with bent portion |
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US20160244353A1 true US20160244353A1 (en) | 2016-08-25 |
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US15/143,868 Abandoned US20160244353A1 (en) | 2012-06-14 | 2016-05-02 | Method for producing glass sheet with bent portion and glass sheet with bent portion |
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US13/916,686 Active US9376337B2 (en) | 2012-06-14 | 2013-06-13 | Method for producing glass sheet with bent portion and glass sheet with bent portion |
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Families Citing this family (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009012018B4 (en) * | 2009-03-10 | 2018-11-22 | Schott Ag | Process for producing angled glass-ceramic components and glass-ceramic component produced by such a method |
EP2766316B1 (en) * | 2011-10-10 | 2020-04-01 | Corning Incorporated | Apparatus and method for tight bending thin glass sheets |
US8833106B2 (en) * | 2012-09-18 | 2014-09-16 | Corning Incorporated | Thermo-mechanical reforming method and system and mechanical reforming tool |
USD725650S1 (en) | 2012-12-06 | 2015-03-31 | Intel Corporation | Computing device |
KR102157751B1 (en) * | 2013-02-20 | 2020-09-21 | 코닝 인코포레이티드 | Method and apparatus for forming shaped glass articles |
USD747302S1 (en) * | 2013-06-14 | 2016-01-12 | Lg Electronics Inc. | Mobile phone |
USD748082S1 (en) * | 2013-06-14 | 2016-01-26 | Lg Electronics Inc. | Mobile phone |
USD744973S1 (en) * | 2013-06-14 | 2015-12-08 | Lg Electronics Inc. | Mobile phone |
JP1519345S (en) * | 2013-06-28 | 2015-03-16 | ||
USD741281S1 (en) * | 2013-06-28 | 2015-10-20 | Lg Electronics Inc. | Mobile phone |
KR20150001964A (en) * | 2013-06-28 | 2015-01-07 | 삼성디스플레이 주식회사 | Apparatus for forming a glass |
JP5582232B1 (en) * | 2013-07-30 | 2014-09-03 | 日本電気硝子株式会社 | Method for producing glass plate having curved shape, glass plate having curved shape, and apparatus for producing glass plate having curved shape |
USD761786S1 (en) | 2013-08-21 | 2016-07-19 | Intel Corporation | Electronic device |
USD754123S1 (en) * | 2013-08-21 | 2016-04-19 | Intel Corporation | Electronic device |
CN104754897A (en) * | 2013-12-26 | 2015-07-01 | 富泰华精密电子(郑州)有限公司 | Mobile terminal casing and manufacturing method thereof |
CA2876688C (en) | 2014-06-20 | 2018-02-20 | Illen Products Ltd. | Display holder system |
USD778365S1 (en) | 2014-11-21 | 2017-02-07 | Illen Products Ltd. | Display holder cover |
USD840392S1 (en) | 2014-12-27 | 2019-02-12 | Intel Corporation | Computing device |
JP6742593B2 (en) * | 2015-01-05 | 2020-08-19 | 日本電気硝子株式会社 | Method for manufacturing supporting glass substrate and method for manufacturing laminated body |
DE112016000631B4 (en) | 2015-02-05 | 2023-08-31 | AGC Inc. | Cover glass with curved surface, method for the production thereof and vehicle interior display element |
KR20170006900A (en) * | 2015-07-10 | 2017-01-18 | 삼성전자주식회사 | Method and Apparatus For Forming Glass Curve By Laser Local Heating |
KR101584492B1 (en) * | 2015-08-17 | 2016-01-12 | (주)육일씨엔에쓰 | Method for manufacturing touch window glass for smart phone |
KR102432352B1 (en) * | 2015-08-31 | 2022-08-16 | 삼성디스플레이 주식회사 | Apparatus for forming window glass and method for manufacturing electronic device having the window |
KR102368787B1 (en) * | 2015-10-08 | 2022-03-03 | 삼성디스플레이 주식회사 | Thermoforming method and thermoforming apparatus |
USD791111S1 (en) * | 2015-10-29 | 2017-07-04 | Samsung Electronics Co., Ltd. | Electronic device |
KR102541450B1 (en) * | 2015-10-29 | 2023-06-09 | 삼성디스플레이 주식회사 | A apparatus and method for manufacturing a display apparatus |
JP2018535914A (en) * | 2015-10-30 | 2018-12-06 | コーニング インコーポレイテッド | 3D-shaped glass article, method and apparatus for manufacturing the same |
CN106231829A (en) * | 2016-08-03 | 2016-12-14 | 南昌欧菲光学技术有限公司 | Electronic product, glass shell and manufacture equipment thereof and method |
USD862296S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD886815S1 (en) * | 2017-05-04 | 2020-06-09 | Lg Electronics Inc. | Television receiver |
USD862297S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD862303S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD862298S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD863122S1 (en) * | 2017-05-04 | 2019-10-15 | Lg Electronics Inc. | Television receiver |
USD862301S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD862300S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD862304S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD862302S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD886814S1 (en) * | 2017-05-04 | 2020-06-09 | Lg Electronics Inc. | Television receiver |
USD862295S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD862299S1 (en) * | 2017-05-04 | 2019-10-08 | Lg Electronics Inc. | Television receiver |
USD863121S1 (en) * | 2017-05-04 | 2019-10-15 | Lg Electronics Inc. | Television receiver |
JP7110713B2 (en) * | 2017-05-12 | 2022-08-02 | Agc株式会社 | Method for manufacturing bent base material |
US11685684B2 (en) * | 2017-05-15 | 2023-06-27 | Corning Incorporated | Contoured glass articles and methods of making the same |
US20180367182A1 (en) * | 2017-06-20 | 2018-12-20 | Wing Tak Lee Silicone Rubber Technology (Shenzhen) Co., Ltd | Method and device for manufacturing curved glass for screen protector |
CN109422446A (en) * | 2017-08-24 | 2019-03-05 | 秦文隆 | Model solid glass mold and model solid glass forming method |
US11065960B2 (en) | 2017-09-13 | 2021-07-20 | Corning Incorporated | Curved vehicle displays |
KR102461107B1 (en) * | 2017-12-14 | 2022-10-31 | 삼성디스플레이 주식회사 | Cover glass and manufacturing method thereof |
CN108712531A (en) * | 2018-05-25 | 2018-10-26 | Oppo广东移动通信有限公司 | The manufacturing method of shell, electronic device and shell |
CN108737603B (en) * | 2018-05-25 | 2020-09-11 | Oppo广东移动通信有限公司 | Housing and electronic device |
KR102159120B1 (en) * | 2019-02-22 | 2020-09-23 | 코세스지티 주식회사 | Curved glass forming mold and curved glass forming method using the same |
KR20210029942A (en) * | 2019-09-09 | 2021-03-17 | 삼성전자주식회사 | Glass member and electronic device including the same |
KR20220060582A (en) * | 2020-11-04 | 2022-05-12 | 삼성디스플레이 주식회사 | Window molding apparatus and window molding method using the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120279257A1 (en) * | 2011-05-05 | 2012-11-08 | Thierry Luc Alain Dannoux | Methods and Apparatus for Reforming a Glass Sheet |
Family Cites Families (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2338229A1 (en) * | 1976-01-14 | 1977-08-12 | Bfg Glassgroup | PROCESS FOR BENDING GLASS SHEETS, DEVICE AND INSTALLATION FOR IMPLEMENTING THE PROCESS |
US4229200A (en) * | 1979-06-01 | 1980-10-21 | Ppg Industries, Inc. | Drop forming glass sheets with auxiliary shaping means |
JPS61227931A (en) | 1985-04-02 | 1986-10-11 | Nippon Sheet Glass Co Ltd | Forming device for glass article |
JPS61227932A (en) * | 1985-04-02 | 1986-10-11 | Nippon Sheet Glass Co Ltd | Forming method for glass article |
DE3527558A1 (en) * | 1985-08-01 | 1987-02-05 | Ver Glaswerke Gmbh | METHOD AND DEVICES FOR BENDING A GLASS DISC |
JPS62212237A (en) | 1986-03-11 | 1987-09-18 | Nippon Sheet Glass Co Ltd | Forming of glass article |
JPH0649581B2 (en) | 1987-11-06 | 1994-06-29 | 日本板硝子株式会社 | Method for forming glass product having smooth surface |
BE1001883A5 (en) * | 1987-11-06 | 1990-04-03 | Nippon Sheet Glass Co Ltd | Process for making a glass object with smooth surface. |
JPH0649582B2 (en) | 1987-11-06 | 1994-06-29 | 日本板硝子株式会社 | Method for forming deep-drawn glass product having smooth surface |
JP2565974B2 (en) * | 1988-03-24 | 1996-12-18 | 日本板硝子株式会社 | Molding method for glass products |
US5176733A (en) * | 1988-12-27 | 1993-01-05 | Ford Motor Company | Method and apparatus for directed energy glass heating |
FR2648803B1 (en) * | 1989-06-22 | 1993-07-16 | Saint Gobain Vitrage | METHOD AND DEVICE FOR CONTACT BOMBING AND TEMPERING |
JPH0753588B2 (en) | 1992-06-12 | 1995-06-07 | 本田工業株式会社 | Flat glass local bending machine and patterned glass machine |
JP2931726B2 (en) * | 1992-09-18 | 1999-08-09 | サンテックコーポレーション株式会社 | Sheet glass molding and method for producing the same |
GB9407609D0 (en) * | 1994-04-15 | 1994-06-08 | Pilkington Glass Ltd | Bending and tempering glass sheets |
FR2777559B1 (en) * | 1998-04-16 | 2000-07-13 | En Nom Collectif Eurokera Soc | MANUFACTURE OF VITROCERAMIC PLATES WITH OPENING (S) WITH A DEFORMED EDGE; DEFORMED VITROCERAMIC PLATES |
JP4111408B2 (en) * | 1998-05-13 | 2008-07-02 | 東ソー・クォーツ株式会社 | Quartz glass bending machine |
ATE244688T1 (en) | 1999-03-23 | 2003-07-15 | Schott Glas | METHOD FOR SHAPING GLASS CERAMIC PARTS AND/OR GLASS PARTS |
KR19990068730A (en) | 1999-06-15 | 1999-09-06 | 성필호 | Cover glass used to plat display |
US20020116951A1 (en) * | 2001-02-27 | 2002-08-29 | Dunifon Thomas A. | Conformally heated male mold |
DE10118260A1 (en) * | 2001-04-11 | 2002-10-24 | Schott Glas | Process for deforming bodies made from glass or glass-ceramic comprises placing the body on a mold, and heating using short wave infrared radiation |
US20050178159A1 (en) | 2002-07-08 | 2005-08-18 | Asahi Glass Company, Limited | Apparatus for manufacturing sheet glass |
JP4178444B2 (en) | 2002-07-08 | 2008-11-12 | 旭硝子株式会社 | Thin glass manufacturing apparatus and manufacturing method |
PL1678091T3 (en) | 2003-10-28 | 2012-02-29 | Schott Ag | Method for the production of a molded glass part comprising at least one bent portion |
FR2877257B1 (en) * | 2004-10-29 | 2008-10-17 | Crea Diffusion Sarl | METHOD AND DEVICE FOR FOLDING A PLATE OF SYNTHETIC MATERIAL CHARGED WITH ALUMINUM TRIHYDRATE |
FR2909372B1 (en) * | 2006-12-05 | 2012-10-19 | Snc Eurokera | METHOD FOR MANUFACTURING NON-PLANT VITROCERAMIC PRODUCTS |
JP2010030859A (en) | 2008-07-30 | 2010-02-12 | Asahi Glass Co Ltd | Bending apparatus and bending method of glass plate |
US20110205485A1 (en) * | 2008-07-31 | 2011-08-25 | Mei S.R.L. | Procedure and equipment for making glass frames and glass frame obtained therefrom |
US20100126222A1 (en) * | 2008-11-25 | 2010-05-27 | Thierry Luc Alain Dannoux | Method and apparatus for forming and cutting a shaped article from a sheet of material |
US8281619B2 (en) * | 2009-05-29 | 2012-10-09 | Corning Incorporated | Stack progressive pressing for making shaped articles |
US20110067450A1 (en) * | 2009-09-23 | 2011-03-24 | Allan Mark Fredholm | Method and apparatus for forming shaped articles from sheet material |
TWI499564B (en) * | 2010-08-30 | 2015-09-11 | Corning Inc | Apparatus and method for shaping a glass substrate |
JP5605176B2 (en) * | 2010-11-10 | 2014-10-15 | 旭硝子株式会社 | Cover glass for flat panel display and manufacturing method thereof |
EP2457881B1 (en) * | 2010-11-30 | 2019-05-08 | Corning Incorporated | Method and apparatus for bending a sheet of material into a shaped article |
US8796165B2 (en) * | 2010-11-30 | 2014-08-05 | Corning Incorporated | Alkaline earth alumino-borosilicate crack resistant glass |
EP2766316B1 (en) * | 2011-10-10 | 2020-04-01 | Corning Incorporated | Apparatus and method for tight bending thin glass sheets |
WO2013055589A2 (en) | 2011-10-10 | 2013-04-18 | Corning Incorporated | Reshaping thin glass sheets |
CN104203847B (en) | 2011-10-13 | 2017-09-22 | 康宁股份有限公司 | Thermomechanical reshaping method and system and mechanical reshaping instrument |
US8816252B2 (en) * | 2011-11-22 | 2014-08-26 | Corning Incorporated | Methods and apparatus for localized heating and deformation of glass sheets |
CN103182894A (en) * | 2011-12-29 | 2013-07-03 | 深圳富泰宏精密工业有限公司 | Glass component and manufacturing method thereof |
US9611165B2 (en) * | 2012-06-08 | 2017-04-04 | Corning Incorporated | Method and apparatus for bending a glass sheet and an electronic device casing |
JP5472521B1 (en) * | 2012-10-10 | 2014-04-16 | 日本電気硝子株式会社 | Manufacturing method of cover glass for mobile display |
JP2014139121A (en) * | 2012-11-07 | 2014-07-31 | Nippon Electric Glass Co Ltd | Method and device for manufacturing cover glass for display |
JP2014139122A (en) * | 2012-11-07 | 2014-07-31 | Nippon Electric Glass Co Ltd | Method and device for manufacturing cover glass for display |
JP5510693B1 (en) * | 2012-12-07 | 2014-06-04 | 日本電気硝子株式会社 | Method for producing tempered glass plate having bent portion and tempered glass plate having bent portion |
KR102157751B1 (en) * | 2013-02-20 | 2020-09-21 | 코닝 인코포레이티드 | Method and apparatus for forming shaped glass articles |
JP6417547B2 (en) * | 2013-05-07 | 2018-11-07 | コーニング インコーポレイテッド | Method and apparatus for forming shaped glass articles |
-
2013
- 2013-05-31 WO PCT/JP2013/065152 patent/WO2013187255A1/en active Application Filing
- 2013-05-31 EP EP13803490.5A patent/EP2865656A4/en not_active Withdrawn
- 2013-05-31 CN CN201380031672.2A patent/CN104364207B/en not_active Expired - Fee Related
- 2013-05-31 JP JP2013115037A patent/JP5435166B1/en not_active Expired - Fee Related
- 2013-06-13 US US13/916,686 patent/US9376337B2/en active Active
- 2013-06-14 TW TW102121238A patent/TWI564259B/en not_active IP Right Cessation
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- 2013-11-15 KR KR1020130139079A patent/KR20140001802A/en not_active Application Discontinuation
-
2016
- 2016-05-02 US US15/143,868 patent/US20160244353A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120279257A1 (en) * | 2011-05-05 | 2012-11-08 | Thierry Luc Alain Dannoux | Methods and Apparatus for Reforming a Glass Sheet |
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JP5435166B1 (en) | 2014-03-05 |
TWI564259B (en) | 2017-01-01 |
EP2865656A1 (en) | 2015-04-29 |
CN104364207A (en) | 2015-02-18 |
CN104364207B (en) | 2017-12-08 |
WO2013187255A1 (en) | 2013-12-19 |
US9376337B2 (en) | 2016-06-28 |
EP2865656A4 (en) | 2016-04-27 |
TW201404730A (en) | 2014-02-01 |
JP2015003854A (en) | 2015-01-08 |
JP2014210692A (en) | 2014-11-13 |
US20130337224A1 (en) | 2013-12-19 |
KR20140001802A (en) | 2014-01-07 |
KR101353756B1 (en) | 2014-01-21 |
KR20130140588A (en) | 2013-12-24 |
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