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WO2010079688A1 - Stratifié de verre et procédé de fabrication pour celui-ci - Google Patents

Stratifié de verre et procédé de fabrication pour celui-ci Download PDF

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Publication number
WO2010079688A1
WO2010079688A1 PCT/JP2009/071379 JP2009071379W WO2010079688A1 WO 2010079688 A1 WO2010079688 A1 WO 2010079688A1 JP 2009071379 W JP2009071379 W JP 2009071379W WO 2010079688 A1 WO2010079688 A1 WO 2010079688A1
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WO
WIPO (PCT)
Prior art keywords
glass substrate
main surface
resin layer
thin glass
thin
Prior art date
Application number
PCT/JP2009/071379
Other languages
English (en)
Japanese (ja)
Inventor
聡 近藤
智之 清水
Original Assignee
旭硝子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 旭硝子株式会社 filed Critical 旭硝子株式会社
Priority to CN2009801542160A priority Critical patent/CN102271908A/zh
Priority to JP2010545701A priority patent/JPWO2010079688A1/ja
Publication of WO2010079688A1 publication Critical patent/WO2010079688A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10798—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing silicone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133302—Rigid substrates, e.g. inorganic substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

Definitions

  • the present invention relates to a glass laminate including a glass substrate used for a liquid crystal display device, an organic EL display device and the like, and a method for producing the same.
  • the thickness of the glass substrate is reduced by performing an etching process or the like before forming the display device member on the surface of the glass substrate, the strength of the glass substrate is lowered and the amount of deflection is increased. Therefore, there arises a problem that it is difficult to process the existing display device member production line.
  • the glass substrate is thinned by performing an etching process after forming the display device member on the surface of the glass substrate, the fineness formed on the surface of the glass substrate in the process of forming the display device member on the surface of the glass substrate. There arises a problem in that a simple flaw appears, that is, a problem that etch pits occur.
  • a thin glass substrate (hereinafter also referred to as “thin glass substrate”) is bonded to another supporting glass substrate to form a glass laminate, and in that state, A method of performing a predetermined process for manufacturing a display device and then separating the thin glass substrate and the supporting glass substrate has been proposed.
  • Patent Document 1 discloses a thin glass laminate obtained by laminating a thin glass substrate and a supporting glass substrate, and the thin glass substrate and the supporting glass substrate are easily peelable and non-adhesive.
  • Patent Document 1 it is described that the relative size relationship between the thin glass substrate and the supporting glass substrate is preferably the same size as or larger than the thin glass substrate.
  • Patent Document 1 shows that the outer periphery of the first main surface of the thin glass substrate enters the inner peripheral side of the outer periphery of the first main surface of the support glass substrate.
  • the peeling blade is inserted into the boundary between the thin glass substrate and the resin layer, the peeling blade is not inserted into the boundary but inserted into the resin layer. For this reason, the resin layer is partially destroyed by the peeling blade, and a problem that a part of the destroyed resin layer remains attached to the thin glass substrate occurs.
  • FIG. 5 and FIG. 6 are enlarged cross-sectional views showing end portions of a conventional glass laminate.
  • 5 shows the outer periphery of the first main surface 53a of the supporting glass substrate 53 and the first main surface 52a of the thin glass substrate 52 when the glass laminate 50 is viewed from the second main surface 52b side of the thin glass substrate 52.
  • It is an expanded sectional view near the edge part of the glass laminated body 50 of the form which the outer periphery overlaps substantially. That is, the thin glass substrate 52 and the supporting glass substrate 53 have the same size.
  • the outer periphery of the first main surface 63a of the support glass substrate 63 is the first main surface of the thin glass substrate 62 when the glass laminate 60 is viewed from the second main surface 62b side of the thin glass substrate 62. It is an expanded sectional view of the edge part vicinity of the glass laminated body 60 of the form which protrudes outside from the outer periphery of the surface 62a. That is, the supporting glass substrate 63 is larger than the thin glass substrate 62.
  • the tip of the peeling blade 15 is the first of the thin glass substrates. Instead of being inserted at the boundary between the main surfaces 52a, 62a and the resin layers 54, 64, it is inserted so as to bite into the resin layers 54, 64. For this reason, the peeling blade 15 breaks the resin layers 54 and 64 and is peeled from the supporting glass substrates 53 and 63 while a part of the resin layer remains on the first main surfaces 52a and 62a of the thin glass substrate.
  • the present inventor has intensively studied in order to solve the above problems, and has completed the present invention. That is, the present invention relates to the following (1) to (8).
  • a thin glass substrate having a first main surface and a second main surface, a supporting glass substrate having a first main surface and a second main surface, and an easily peelable resin layer A glass laminate in which the thin glass substrate and the support glass substrate are laminated via the resin layer so that the first main surface and the resin layer fixed to the first main surface of the support glass substrate are in close contact with each other.
  • Body A glass laminate in which the thin glass substrate is laminated such that at least a part of the outer periphery of the first main surface of the thin glass substrate protrudes from the outer periphery of the first main surface of the support glass substrate.
  • the first main surface of the thin glass substrate and the first main surface of the support glass substrate have a rectangular shape, and the longitudinal and / or horizontal lengths of the first main surface of the thin glass substrate
  • the vertical and / or horizontal lengths of the first main surface of the thin glass substrate are 0.2 mm longer than the vertical and / or horizontal lengths of the first main surface of the supporting glass substrate. To 20 mm longer, the glass laminate according to (1) or (2).
  • the entire outer periphery of the first main surface of the thin glass substrate protrudes outward from the outer periphery of the first main surface of the support glass substrate, according to any one of (1) to (3) Glass laminate.
  • the resin forming the resin layer is at least one selected from an acrylic resin, a polyolefin resin, a polyurethane resin, and a silicone resin.
  • the resin layer has a thickness of 5 to 50 ⁇ m.
  • a difference in linear expansion coefficient between the thin glass substrate and the supporting glass substrate is 150 ⁇ 10 ⁇ 7 / ° C.
  • a panel for a display device with a support comprising a display device member on a second main surface of the thin glass substrate in the glass laminate according to any one of (1) to (7).
  • the glass laminate obtained by the present invention does not require special processing on the supporting glass substrate, and in the step of peeling the thin glass substrate from the supporting glass substrate, the thin glass glass adhered without destroying the resin layer
  • the substrate and the resin layer can be peeled easily and in a short time.
  • production of an etch pit can be suppressed.
  • the panel for display apparatuses with a support containing such a glass laminated body can be provided.
  • a display device panel with a support, a display device panel, and a method for manufacturing the display device can be provided.
  • FIG. 1 is a schematic front view showing an embodiment of the glass laminate of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a cross section AA ′ of FIG.
  • FIG. 3 is a schematic cross-sectional view showing an end of an embodiment of the glass laminate of the present invention.
  • 4 (a), (b) and (c) are schematic front views showing another embodiment of the glass laminate of the present invention.
  • FIG. 5 is a schematic cross-sectional view showing an end of an embodiment of a conventional glass laminate.
  • FIG. 6 is a schematic cross-sectional view showing an end portion of an embodiment of a conventional glass laminate.
  • FIG. 1 is a schematic front view showing an embodiment of a glass laminate of the present invention (hereinafter also simply referred to as “laminate”), and FIG. 2 is a cross-sectional view along AA ′ (schematic cross-sectional view) of FIG. is there.
  • the laminated body 10 of this embodiment has the thin glass substrate 12, the support glass substrate 13, and the resin layer 14, and is laminated
  • the laminate 10 of the present embodiment has a thin glass substrate 12, a resin layer 14, and a supporting glass substrate 13 each having a rectangular shape, and the first main body of the thin glass substrate 12. At least a part of the outer periphery of the surface 12 a is positioned so as to protrude outward in the main surface direction from the outer periphery of the first main surface 13 a of the support glass substrate 13.
  • the resin layer 14 is fixed to the first main surface 13 a of the supporting glass substrate 13 and is in close contact with the first main surface 12 a of the thin glass substrate 12. Further, the resin layer 14 is easily peelable from the first main surface 12 a of the thin glass substrate 12.
  • the main surface on the support glass substrate 13 side is the first main surface 12a
  • the opposite main surface is the second main surface. It is the surface 12b.
  • the main surface of the thin glass substrate 12 (the side where the resin layer 14 is present) is the first main surface 13a
  • the main surface on the opposite side is the second main surface. This is the main surface 13b.
  • FIG. 3 shows a laminate according to this embodiment in which a part of the outer periphery of the first main surface 12 a of the thin glass substrate 12 protrudes outward from a part of the outer periphery of the first main surface 13 a of the support glass substrate 13.
  • the tip of the peeling blade 15 is abutted against the first main surface 12a of the thin glass substrate 12 so as not to damage the first main surface 12a toward the boundary between the thin glass substrate 12 and the resin layer 14. You can slide on.
  • the tip of the peeling blade 15 is inserted at the boundary between the thin glass substrate 12 and the resin layer 14 without destroying the resin layer 14, and the thin glass substrate 12 is supported by the supporting glass substrate 13. It becomes possible to peel from.
  • the thin glass substrate in the present invention will be described.
  • the thickness, shape, size, physical properties (thermal shrinkage, surface shape, chemical resistance, etc.), composition, etc. of the thin glass substrate are not particularly limited.
  • a glass substrate for a display device such as a conventional LCD or OLED It may be the same.
  • the thickness of the thin glass substrate is not particularly limited, but is preferably less than 0.7 mm, more preferably 0.5 mm or less, and further preferably 0.4 mm or less. Further, it is preferably 0.05 mm or more, more preferably 0.07 mm or more, and further preferably 0.1 mm or more.
  • the shape of the thin glass substrate is not limited, but is preferably rectangular.
  • the rectangle is substantially a rectangle and includes a shape in which the corners of the peripheral part are cut off (corner cut).
  • the size of the thin glass substrate is not limited, for example, in the case of a rectangle, it may be 100 to 2000 mm ⁇ 100 to 2000 mm, and preferably 500 to 1000 mm ⁇ 500 to 1000 mm.
  • the laminated body of this embodiment can peel a thin glass substrate and a support glass substrate easily.
  • Properties of the thin glass substrate such as heat shrinkage, surface shape, chemical resistance and the like are not particularly limited, and vary depending on the type of display device to be manufactured.
  • the thermal contraction rate of the thin glass substrate is small.
  • the linear expansion coefficient of the thin glass substrate is preferably 0 / ° C. or higher.
  • a linear expansion coefficient means a thing prescribed
  • the composition of the thin glass substrate may be the same as, for example, conventionally known glass containing alkali metal oxide or non-alkali glass. Among these, alkali-free glass is preferable because of its low thermal shrinkage rate.
  • the supporting glass substrate supports the thin glass substrate through the resin layer and reinforces the strength of the thin glass substrate.
  • the thickness, shape, physical properties (heat shrinkage rate, surface shape, chemical resistance, etc.), composition, etc. of the supporting glass substrate are not particularly limited.
  • the thickness of the supporting glass substrate is not particularly limited, but it is necessary that the thickness of the laminated body of the present embodiment be a thickness that can be processed in the current manufacturing process of a member for a display device.
  • the thickness is preferably 0.1 to 1.1 mm, more preferably 0.3 to 0.8 mm, and still more preferably 0.4 to 0.7 mm.
  • the thickness of the supporting glass substrate and the resin layer The sum with the thickness is 0.4 mm.
  • the current production line is most commonly designed to process a glass substrate having a thickness of 0.7 mm. For example, if the thickness of a thin glass substrate is 0.4 mm, the supporting glass The sum of the thickness of the substrate and the thickness of the resin layer is 0.3 mm.
  • the thickness of the supporting glass substrate is preferably thicker than that of the thin glass substrate.
  • the shape of the supporting glass substrate is not limited, but is preferably rectangular.
  • the rectangle here is substantially a substantially rectangular shape, and includes a shape in which the corners of the peripheral portion are cut off (corner cut).
  • the size of the supporting glass substrate in the present invention is not limited, but is preferably smaller than the thin glass substrate. That is, it is preferable that the vertical and / or horizontal lengths of the first main surface of the supporting glass substrate are shorter than the vertical and / or horizontal lengths of the first main surface of the thin glass substrate.
  • the vertical is the short side direction of the thin glass substrate in FIG. 1 and the direction of the arrow Xa
  • the horizontal is the long side direction of the thin glass substrate and the direction of the arrow Xb in FIG. It means that there is.
  • the range of the difference between the vertical length and / or the horizontal length between the thin glass substrate and the supporting glass substrate is preferably 0.2 mm or more and 20 mm or less.
  • the difference in length is 0.2 mm or more and 20 mm or less because in the step of peeling the thin glass substrate from the supporting glass substrate, the resin layer can be prevented from being broken by the cutting blade. Furthermore, the protruding portion of the thin glass substrate is preferable because it is difficult to bend and break.
  • the difference in length is more preferably 2 mm or more and 15 mm or less.
  • FIGS. 4A to 4C are schematic front views of other embodiments of the laminate of the present invention. In these drawings, for easy understanding, only the first main surface of the thin glass substrate and the first main surface of the supporting glass substrate are shown.
  • FIG. 4A two of the four sides of the first main surface 42a of the thin glass substrate protrude outward from the outer periphery of the first main surface 43a of the support glass substrate.
  • FIG. 4B three sides out of the four sides of the first main surface 42a of the thin glass substrate protrude outward from the outer periphery of the first main surface 43a of the support glass substrate.
  • FIG. 4C all four sides of the first main surface 42a of the thin glass substrate protrude outward from the outer periphery of the first main surface 43a of the support glass substrate.
  • FIGS. 4A to 4C the embodiment shown in FIG. 4C is preferable. The reason is as follows.
  • the linear expansion coefficient of the supporting glass substrate may be substantially the same as or different from the linear expansion coefficient of the thin glass substrate. Substantially the same is preferable in that the thin glass substrate or the supporting glass substrate is less likely to warp when the laminate of this embodiment is heat-treated.
  • the difference in coefficient of linear expansion between the thin glass substrate and the supporting glass substrate is preferably 150 ⁇ 10 ⁇ 7 / ° C. or less, more preferably 100 ⁇ 10 ⁇ 7 / ° C. or less, and 50 ⁇ 10 ⁇ 7 / ° C. More preferably, it is not higher than ° C.
  • the composition of the supporting glass substrate may be the same as, for example, glass containing an alkali metal oxide or non-alkali glass. Among these, alkali-free glass is preferable because of its low thermal shrinkage rate.
  • the resin layer in the present invention will be described.
  • the resin layer is fixed to the first main surface of the support glass substrate. And although the resin layer is closely_contact
  • the resin layer and the thin glass substrate are not attached by the adhesive force that the adhesive has, but are attached by the force caused by van der Waals force between solid molecules, that is, the adhesive force. ing.
  • the thickness of the resin layer is not particularly limited. It is preferably 5 to 50 ⁇ m, more preferably 5 to 30 ⁇ m, and even more preferably 7 to 20 ⁇ m. This is because when the thickness of the resin layer is in such a range, the thin glass substrate and the resin layer are sufficiently adhered. Moreover, even if bubbles or foreign substances are present, it is possible to suppress the occurrence of distortion defects in the thin glass substrate. On the other hand, if the resin layer is too thick, it takes time and materials to form the resin layer, which is not economical.
  • the resin layer may consist of two or more layers.
  • the thickness of the resin layer means the total thickness of all the resin layers.
  • the kind of resin which forms each layer may differ.
  • the resin layer preferably has a surface tension of 30 mN / m or less, more preferably 25 mN / m or less, and even more preferably 22 mN / m or less. This is because such surface tension can be more easily peeled off from the thin glass substrate, and at the same time, the close contact with the thin glass substrate becomes sufficient.
  • the resin layer preferably has a surface tension of 15 mN / m or more.
  • the glass transition point of the resin layer is preferably lower than room temperature (about 25 ° C.) or made of a material having no glass transition point. This is because it becomes a non-adhesive resin layer, is more easily peelable, can be more easily peeled off from the thin glass substrate, and at the same time is sufficiently adhered to the thin glass substrate.
  • the resin layer preferably has heat resistance.
  • the laminate of this embodiment can be subjected to heat treatment.
  • the type of resin that forms the resin layer is not particularly limited.
  • acrylic resin, polyolefin resin, polyurethane resin, and silicone resin can be mentioned.
  • Several types of resins can be mixed and used. Of these, silicone resins are preferred. This is because the silicone resin is excellent in heat resistance and easy to peel from a thin glass substrate. Moreover, it is because it is easy to fix to a support glass substrate by the condensation reaction with the silanol group of the support glass substrate surface. It is also preferable that the silicone resin layer is not easily deteriorated even if it is treated at about 300 to 400 ° C. for about 1 hour, for example.
  • the resin layer is preferably made of silicone for release paper among silicone resins, and is preferably a cured product thereof.
  • the silicone for release paper is mainly composed of silicone containing linear dimethylpolysiloxane in the molecule.
  • the resin layer formed by curing the composition containing the main agent and the crosslinking agent on the surface (first main surface) of the supporting glass substrate using a catalyst, a photopolymerization initiator, etc. has excellent easy peelability. Since it has, it is preferable. Moreover, since the flexibility is high, even if foreign matters such as bubbles and dust are mixed between the thin glass substrate and the resin layer, the occurrence of distortion defects of the thin glass substrate can be suppressed.
  • Such release paper silicones are classified into condensation reaction type silicones, addition reaction type silicones, ultraviolet ray curable silicones, and electron beam curable silicones depending on the curing mechanism, and any of them can be used.
  • addition reaction type silicone is preferable. This is because the curing reaction is easy, the degree of easy peeling is good when the resin layer is formed, and the heat resistance is also high.
  • the silicone for release paper is classified into a solvent type, an emulsion type, and a solventless type, and any type can be used.
  • a solventless type is preferable. This is because productivity, safety, and environmental characteristics are excellent.
  • a solvent that causes foaming is not included at the time of curing when forming the resin layer, that is, at the time of heat curing, ultraviolet curing, or electron beam curing, bubbles are unlikely to remain in the resin layer.
  • KNS-320A, KS-847, and TPR6700 are silicones that contain a main agent and a crosslinking agent in advance.
  • the silicone resin forming the resin layer has a property that the components in the silicone resin layer are difficult to migrate to the thin glass substrate, that is, low silicone migration.
  • a panel for a display device with a support can be obtained by forming a display device member on the second main surface of the thin glass substrate in the laminate of this embodiment.
  • Display device members include various circuits such as a light emitting layer, a protective layer, a color filter, a liquid crystal, and a transparent electrode made of indium tin oxide (ITO) on a surface of a glass substrate for a display device such as a conventional LCD or OLED. Means a pattern.
  • a display device can be obtained from such a display device panel.
  • the display device include an LCD and an OLED.
  • Examples of LCD include TN type, STN type, FE type, TFT type, and MIM type.
  • the manufacturing method of the laminated body of this embodiment is not particularly limited, a resin layer forming step of forming and fixing an easily peelable resin layer on the first main surface of the support glass substrate, and a process for forming the thin glass substrate. It is preferable that it is a manufacturing method of a glass laminated body including the contact
  • the manufacturing method of the present embodiment is also referred to as “the manufacturing method of the present embodiment”.
  • the manufacturing method of the thin glass substrate and the supporting glass substrate itself used in the manufacturing method of the present embodiment is not particularly limited.
  • it can be produced by a conventionally known method.
  • it can be obtained by melting a conventionally known glass raw material to form a molten glass and then forming it into a plate shape by a float method, a fusion method, a down draw method, a slot down method, a redraw method or the like.
  • the resin layer formation process in the manufacturing method of this embodiment is demonstrated.
  • the method for forming the resin layer on the surface (first main surface) of the supporting glass substrate is not particularly limited.
  • a method of adhering a film-like resin to the surface of a supporting glass substrate can be mentioned.
  • a method of performing surface modification treatment (priming treatment) on the surface of the supporting glass substrate and adhering to the first main surface of the supporting glass substrate can be mentioned. .
  • a method of coating a resin composition that becomes a resin layer on the first main surface of the supporting glass substrate by a known method may be mentioned.
  • Known methods include spray coating, die coating, spin coating, dip coating, roll coating, bar coating, screen printing, and gravure coating. From such a method, it can select suitably according to a kind to a resin composition.
  • the coating amount is preferably 1 to 100 g / m 2 , and more preferably 5 to 20 g / m 2 .
  • a resin composition containing a silicone (main agent) containing a linear dimethylpolysiloxane in the molecule, a crosslinking agent and a catalyst is used for the known spray coating method or the like. It is coated on a supporting glass substrate by the method, and then cured by heating.
  • the heating and curing conditions vary depending on the blending amount of the catalyst. For example, when 2 parts by weight of a platinum-based catalyst is blended with respect to 100 parts by weight of the total amount of the main agent and the cross-linking agent, The reaction is preferably carried out at 100 ° C to 200 ° C. In this case, the reaction time is 5 to 60 minutes, preferably 10 to 30 minutes.
  • the reaction temperature and the reaction time are as described above because no unreacted silicone component remains in the silicone resin layer. If the reaction time is too long or the reaction temperature is too high, the oxidative decomposition of the silicone resin occurs at the same time, and a low molecular weight silicone component is produced, which may increase the silicone transferability. It is preferable to allow the curing reaction to proceed as much as possible so that an unreacted silicone component does not remain in the silicone resin layer in order to improve the peelability after the heat treatment.
  • the release paper silicone coated on the support glass substrate is heat-cured to form a silicone resin layer, and then the support glass substrate is bonded in the adhesion step.
  • a thin glass substrate is laminated on the silicone resin forming surface.
  • the adhesion process is a process in which the resin layer fixed on the first main surface of the supporting glass substrate is adhered to the first main surface of the thin glass substrate.
  • the thin glass substrate and the resin layer are brought into close contact with the resin layer by a force caused by van der Waals force between the adjacent solid molecules that are very close to each other, that is, an adhesive force.
  • the support glass substrate, the thin glass substrate, and the resin layer can be held in a laminated state.
  • the method for laminating the thin glass substrate on the surface of the resin layer fixed to the supporting glass substrate is not particularly limited. For example, it can implement using a well-known method. For example, after laminating a thin glass substrate on the surface of the resin layer under a normal pressure environment, a method of pressure bonding the resin layer and the thin glass substrate using a roll or a press can be mentioned. It is preferable because the resin layer and the thin glass substrate are more closely adhered by pressure bonding with a roll or a press. In addition, it is preferable because bubbles mixed between the resin layer and the thin glass substrate are relatively easily removed by pressure bonding with a roll or a press.
  • the surface of the thin glass substrate is sufficiently washed and laminated in a clean environment. Even if a foreign substance enters between the resin layer and the thin glass substrate, the resin layer is deformed, so the flatness of the surface of the thin glass substrate is not affected. However, the higher the cleanness, the better the flatness. Therefore, it is preferable.
  • the glass laminate of this embodiment can be produced by the production method of this embodiment.
  • the manufacturing method further includes a step of forming a member for a display device on the second main surface of the thin glass substrate in the obtained glass laminate of the present embodiment.
  • a panel for a display device with a support can be produced.
  • the display device member is not particularly limited.
  • an array or a color filter included in the LCD can be mentioned.
  • a transparent electrode, a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer included in the OLED can be given.
  • a method for forming such a display device member is not particularly limited, and may be the same as a conventionally known method.
  • a step of forming an array on a conventionally known glass substrate, a step of forming a color filter, a glass substrate on which an array is formed, and a glass substrate on which a color filter is formed May be the same as various steps such as a step of bonding together through a sealing material or the like (array / color filter bonding step). More specifically, examples of the process performed in these steps include pure water cleaning, drying, film formation, resist solution application, exposure, development, etching, and resist removal.
  • a liquid crystal injection process and a liquid crystal injection port sealing process there exist a liquid crystal injection process and a liquid crystal injection port sealing process, and the process implemented by these processes is mentioned.
  • a process for forming an organic EL structure on the second main surface of a thin glass substrate a process of forming a transparent electrode, a hole injection layer, a hole transport layer, Various processes such as a process for depositing a light emitting layer / electron transport layer and the like, a sealing process, and the like are performed. Specifically, for example, a film forming process, a vapor deposition process, and an adhesion of a sealing plate are performed. Processing and the like.
  • the thin glass substrate and the support glass substrate in the obtained panel for a display device with a support are further peeled (peeling step).
  • a panel for a display device can be obtained.
  • the display device panel can be manufactured, for example, by peeling the thin glass substrate and the support glass substrate in the support-equipped display device panel obtained by the manufacturing method of the present embodiment as described above. it can.
  • the method for peeling is not particularly limited. Specifically, for example, the peeling blade is applied to the first main surface of the thin glass substrate that protrudes outside the outer periphery of the first main surface of the support glass substrate. Next, the cutting blade is slid on the first main surface of the thin glass substrate toward the boundary between the thin glass substrate and the resin layer. Then, a peeling blade can be inserted into the boundary to give a trigger for peeling, and then a mixed fluid of water and compressed air is sprayed onto the boundary to peel the thin glass substrate.
  • the supporting glass substrate of the display device-equipped panel is on the upper side and the panel side is on the lower side.
  • the panel-side substrate is vacuum-sucked on the surface plate (if the supporting glass substrates are laminated on both surfaces, the steps are sequentially performed).
  • the peeling blade is abutted against the first main surface of the thin glass substrate, and the first main surface of the thin glass substrate is slid toward the boundary between the thin glass substrate and the resin layer, and is peeled to the boundary. Insert the tool.
  • a mixed fluid of water and compressed air is sprayed on the boundary between the thin glass substrate and the resin layer, and the end portion of the supporting glass substrate is pulled vertically upward.
  • an air layer is formed at the boundary between the resin layer and the thin glass substrate, the air layer spreads over the entire boundary, and the supporting glass substrate can be easily peeled off (the thin plate on the front side and the back side of the display device). If a supporting glass substrate is laminated on both of the glass substrates, repeat this operation one side at a time).
  • a display device can be manufactured by a manufacturing method including a step of obtaining a display device using the obtained display device panel.
  • the operation in the step of obtaining the display device is not particularly limited, and for example, the display device can be produced by a conventionally known method.
  • Example 1 First, a supporting glass substrate (Asahi Glass Co., Ltd., AN100) having a length of 715 mm, a width of 595 mm, a plate thickness of 0.4 mm, and a linear expansion coefficient of 38 ⁇ 10 ⁇ 7 / ° C. is prepared. Cleaned.
  • a supporting glass substrate Asahi Glass Co., Ltd., AN100
  • a mixture of 100 parts by mass of solvent-free addition reaction type release paper silicone and 2 parts by mass of platinum-based catalyst is screen-printed on the first main surface of the supporting glass substrate in a size of 714 mm in length and 594 mm in width.
  • the coating was carried out with a machine (coating amount 30 g / m 2 ). And it heat-hardened in air
  • the first main surface (later contacted with a silicone resin layer) of a thin glass substrate (Asahi Glass Co., Ltd., AN100) having a length of 720 mm, a width of 600 mm, a plate thickness of 0.3 mm, and a linear expansion coefficient of 38 ⁇ 10 ⁇ 7 / ° C.
  • the side surface was cleaned with pure water and UV.
  • the surface of the silicone resin layer on the first main surface of the supporting glass substrate and the first main surface of the thin glass substrate are bonded together at room temperature by a vacuum press so that the centers of gravity of both the substrates overlap, Body A (laminated body A of the present invention) was obtained.
  • the thin glass substrate and the supporting glass substrate were in close contact with the silicone resin layer without generating bubbles, and had no convex defects and good smoothness. .
  • Example 2 was the same as Example 1, but a thin glass substrate with a thinner plate thickness was used.
  • a supporting glass substrate (Asahi Glass Co., Ltd., AN100) having a length of 718 mm, a width of 598 mm, a thickness of 0.6 mm, and a linear expansion coefficient of 38 ⁇ 10 ⁇ 7 / ° C. was cleaned with pure water and UV to clean the surface. .
  • linear polyorganosiloxane having vinyl groups at both ends and methyl hydrogen polysiloxane having hydrosilyl groups in the molecule were used. And this is mixed with a platinum-type catalyst, a mixture is prepared, and it coats with a die coat apparatus with a size of 715 mm in length and 595 mm in width on the first main surface of the supporting glass substrate (coating amount 20 g / m 2). ), And cured by heating in the air at 180 ° C. for 30 minutes to form a silicone resin layer having a thickness of 20 ⁇ m.
  • the mixing ratio of the linear polyorganosiloxane and the methylhydrogen polysiloxane was adjusted so that the molar ratio of hydrosilyl group to vinyl group was 1/1.
  • the platinum-based catalyst was added in an amount of 5 parts by mass with respect to a total of 100 parts by mass of the linear polyorganosiloxane and methyl hydrogen polysiloxane.
  • a glass substrate (AN100 manufactured by Asahi Glass Co., Ltd.) having a length of 720 mm, a width of 600 mm, a thickness of 0.1 mm, and a linear expansion coefficient of 38 ⁇ 10 ⁇ 7 / ° C. is used as a thin glass substrate.
  • the surface of the silicone resin layer on the main surface and the thin glass substrate were bonded to each other so that the centers of gravity of the two substrates overlap each other at room temperature by vacuum pressing to obtain a laminated glass laminate B (laminate B of the present invention).
  • the thin glass substrate and the supporting glass substrate were in close contact with the silicone resin layer without generating bubbles, and had no convex defects and good smoothness. .
  • Example 3 an LCD is manufactured using the glass laminate B obtained in Example 2. Two glass laminates B are prepared, and one is subjected to an array forming process to form an array on the second main surface of the thin glass substrate. The remaining one sheet is subjected to a color filter forming process to form a color filter on the second main surface of the thin glass substrate.
  • a stainless steel cutting blade having a thickness of 0.25 mm is attached to the first support glass substrate. It abuts against the first main surface of the thin glass substrate protruding outward from the outer periphery of the main surface.
  • the first cutting surface of the thin glass substrate is slid toward the boundary between the thin glass substrate and the resin layer, and a peeling blade is inserted into the boundary.
  • a mixed fluid of compressed air and water is sprayed toward the boundary, and each supporting glass substrate is peeled off. There is no scratch on the resin layer fixed on the support glass substrate after peeling, and no resin remains on the thin glass substrate.
  • the glass substrate from which the supporting glass substrate has been peeled is cut and divided into 168 cells of 51 mm in length and 38 mm in width, and then a liquid crystal injection step and an injection port sealing step are performed to form a liquid crystal cell.
  • a step of attaching a polarizing plate to the formed liquid crystal cell is performed, and then a module formation step is performed to obtain an LCD.
  • the LCD obtained in this way does not have a problem in characteristics.
  • Example 4 an LCD is manufactured using the glass laminate A obtained in Example 1. Two glass laminates A are prepared, and one is subjected to an array forming process to form an array on the second main surface of the thin glass substrate. The remaining one sheet is subjected to a color filter forming process to form a color filter on the second main surface of the thin glass substrate.
  • a stainless steel cutting blade having a thickness of 0.25 mm is attached to the first support glass substrate. It abuts against the first main surface of the thin glass substrate protruding outward from the outer periphery of the main surface.
  • the first main surface of the thin glass substrate is slid toward the boundary between the thin glass substrate and the resin layer, and a peeling blade is inserted into the boundary. Then, after spraying the mixed fluid of water and compressed air toward the said boundary, each support glass substrate is peeled. There is no scratch on the resin layer fixed on the support glass substrate after peeling, and no resin remains on the thin glass substrate.
  • each thin glass substrate is set to 0.15 mm by a chemical etching process. Etch pits that cause optical problems are not observed on the surface of the thin glass substrate after the chemical etching treatment.
  • the glass substrate from which the supporting glass substrate has been peeled is cut and divided into 168 cells of 51 mm in length and 38 mm in width, and then a liquid crystal injection step and an injection port sealing step are performed to form a liquid crystal cell.
  • a step of attaching a polarizing plate to the formed liquid crystal cell is performed, and then a module formation step is performed to obtain an LCD.
  • the LCD obtained in this way does not have a problem in characteristics.
  • Example 5 an OLED is manufactured using the glass laminate B obtained in Example 2.
  • Laminated glass substrate for the process of forming a transparent electrode, a process of forming an auxiliary electrode, a process of depositing a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, etc., and a process of sealing them An organic EL structure is formed on the second main surface.
  • a stainless steel cutting blade having a thickness of 0.25 mm is abutted against the first main surface of the thin glass substrate protruding outward from the outer periphery of the first main surface of the supporting glass substrate.
  • the peeling blade is slid on the first main surface of the thin glass substrate toward the boundary between the thin glass substrate and the resin layer of the laminate, and is inserted into the boundary.
  • a mixed fluid of compressed air and water is sprayed toward the boundary, and each supporting glass substrate is peeled off. There is no scratch on the resin layer fixed on the support glass substrate after peeling, and no resin remains on the thin glass substrate.
  • the thin glass substrate is cut using a laser cutter or a scribe-break method, and divided into 288 cells of 41 mm length ⁇ 30 mm width, and then the glass substrate on which the organic EL structure is formed and the counter substrate are separated. Assemble and perform module formation process to create OLED.
  • the OLED obtained in this way does not have a problem in characteristics.
  • Example 1 The laminated body in this example was the same as Example 1 except that the vertical and horizontal sizes of the supporting glass substrate were changed to the same size as the thin glass substrate, that is, 720 mm long and 600 mm wide.
  • the glass substrate was in close contact with the silicone resin layer without generating bubbles, there was no convex defect, and the smoothness was good.
  • two glass laminates C are prepared, and one is subjected to an array forming process to form an array on the second main surface of the thin glass substrate.
  • the remaining one sheet is subjected to a color filter forming process to form a color filter on the second main surface of the thin glass substrate.
  • a stainless steel cutting blade having a thickness of 0.25 mm is applied to the first main surface of the thin glass substrate. Strike. Next, the first main surface of the thin glass substrate is slid toward the boundary between the thin glass substrate and the resin layer, and a peeling blade is inserted into the boundary. Then, after spraying the mixed fluid of water and compressed air toward the said boundary, each support glass substrate is peeled. The resin layer fixed on the supporting glass substrate after peeling is scratched by the cutting blade, and a part of the resin remains on the first main surface of the thin glass substrate. Therefore, in the display device manufacturing process, an extra step of scraping off a part of the resin adhering to the first main surface of the thin glass substrate with a razor or the like is necessary.
  • the thin glass substrate obtained by the present invention can be used as a glass substrate for various display devices.

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Abstract

L'invention porte sur un stratifié de verre, qui comprend un substrat en verre en feuille mince présentant une première surface principale et une seconde surface principale, un substrat en verre de support présentant une première surface principale et une seconde surface principale, et une couche de résine facile à retirer, le substrat en verre en feuille mince et le substrat en verre de support étant stratifiés avec la couche de résine interposée entre ceux-ci, de telle sorte que la première couche principale du substrat en verre en feuille mince et la première couche principale du substrat en verre de support adhèrent étroitement à la couche de résine fixée à ceux-ci, et le substrat en verre en feuille mince étant stratifié de telle sorte qu'au moins une partie de la circonférence de la première surface principale du substrat en verre en feuille mince fait saillie à partir de la circonférence de la première surface principale du substrat en verre de support.
PCT/JP2009/071379 2009-01-09 2009-12-24 Stratifié de verre et procédé de fabrication pour celui-ci WO2010079688A1 (fr)

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CN2009801542160A CN102271908A (zh) 2009-01-09 2009-12-24 玻璃层叠体及其制造方法
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