WO2007018028A1 - 薄板ガラス積層体及び薄板ガラス積層体を用いた表示装置の製造方法 - Google Patents
薄板ガラス積層体及び薄板ガラス積層体を用いた表示装置の製造方法 Download PDFInfo
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- WO2007018028A1 WO2007018028A1 PCT/JP2006/314525 JP2006314525W WO2007018028A1 WO 2007018028 A1 WO2007018028 A1 WO 2007018028A1 JP 2006314525 W JP2006314525 W JP 2006314525W WO 2007018028 A1 WO2007018028 A1 WO 2007018028A1
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- glass substrate
- thin glass
- silicone
- resin layer
- silicone resin
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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
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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
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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
- 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
- B32B17/10036—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 comprising two outer glass sheets
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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
- 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
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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- 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
-
- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/748—Releasability
-
- 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
- B32B2319/00—Synthetic rubber
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/05—Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
- C09K2323/053—Organic silicon compound, e.g. organosilicon
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- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/11—Methods of delaminating, per se; i.e., separating at bonding face
- Y10T156/1168—Gripping and pulling work apart during delaminating
- Y10T156/1189—Gripping and pulling work apart during delaminating with shearing during delaminating
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- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/19—Delaminating means
- Y10T156/1961—Severing delaminating means [e.g., chisel, etc.]
- Y10T156/1967—Cutting delaminating means
- Y10T156/1972—Shearing delaminating means
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- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Definitions
- the present invention relates to a glass substrate used in a display device such as a liquid crystal display or an organic EL display, and more specifically, the thin plate used when manufacturing a display device using a thin glass substrate.
- the present invention relates to a laminate of a glass substrate and a supporting glass substrate, a method for producing a display device using the laminate, and silicone for release paper for the thin glass laminate.
- LCD liquid crystal display devices
- OLED organic EL display devices
- weight reduction and thinning of display devices are important issues.
- the thin glass substrate is supported by other supports.
- a predetermined process for manufacturing a display device is performed in a state of being laminated with a holding glass substrate to form a laminated body (thin glass laminated body), and the thin glass substrate and the supporting glass substrate are separated after the processing is completed.
- a method for manufacturing a display device has been proposed (see Patent Documents 1 to 6).
- the glass substrates are fixed to each other by electrostatic adsorption force or vacuum adsorption force, the both ends of the glass substrate are fixed using glass frit, or the laser beam is irradiated to the vicinity of the end face of the peripheral part.
- the method of fusing together two glass substrates it is difficult to avoid the inclusion of bubbles and convex defects that are interspersed with foreign matter such as dust in the process of laminating and adhering the glass substrates together without any intermediate layer. It is difficult to obtain a glass substrate laminate having a smooth surface.
- the manufacturing process of the display device includes a process that requires processing at a high temperature such as the baking process of the insulating film and the alignment film in the manufacturing process of the liquid crystal display device.
- the sheet is required to have heat resistance for a display device, but a method for achieving both heat resistance and removability has been proposed.
- Patent Document 1 JP 2000-241804 A
- Patent Document 2 JP-A-58-54316
- Patent Document 3 Japanese Patent Laid-Open No. 2003-216068
- Patent Document 4 JP-A-8-86993
- Patent Document 5 JP-A-9-105896
- Patent Document 6 Japanese Patent Laid-Open No. 2000-252342
- the present invention provides a thin glass substrate and a supporting glass substrate that support the thin glass substrate by suppressing the occurrence of convex defects due to air bubbles and foreign matters.
- a thin glass laminate that can be easily separated from a glass substrate and has excellent heat resistance, a method for producing a display device using the thin glass laminate, and peeling for the thin glass laminate An object is to provide silicone for paper.
- the present invention provides a thin glass laminate obtained by laminating a thin glass substrate and a supporting glass substrate,
- a thin glass laminate in which the thin glass substrate and the supporting glass substrate are laminated through a silicone resin layer having easy peelability and non-adhesiveness.
- the silicone resin layer having easy peelability and non-adhesiveness further has low silicone transferability.
- the silicone resin layer having easy peelability and non-adhesiveness is preferably a layer having a cured product strength of a release paper silicone.
- the cured product of the silicone for release paper is composed of a linear polyorganosiloxane having vinyl groups at both ends and Z or side chains, and a methylnoid diene polysiloxane having hydrosilyl groups in the molecule.
- a cross-linked reaction product is preferred.
- the thin glass laminate of the present invention a thin glass laminate in which a thin glass substrate and a supporting glass substrate are laminated via a silicone resin layer having easy peelability and non-adhesiveness. This is referred to as “the thin glass laminate of the present invention”.
- the thickness of the thin glass substrate is less than 0.3 mm, and the total thickness of the supporting glass substrate and the easily peelable and non-adhesive silicone resin layer is 0.5 mm or more is preferable.
- the linear expansion coefficient of the supporting glass substrate, and the difference of the linear expansion coefficient of the thin glass substrate is less than 15 X 10- 7 / ° C.
- the present invention is a method for manufacturing a display device using a thin glass substrate
- a display device manufacturing method using a body hereinafter referred to as “display device manufacturing method of the present invention”.
- the silicone resin layer having easy peelability and non-adhesiveness is preferably a layer made of a cured product of silicone for release paper.
- the cured product of the silicone for release paper is composed of a linear polyorganosiloxane having vinyl groups at both ends and Z or side chains, and a methylnoid diene polysiloxane having hydrosilyl groups in the molecule.
- a cross-linked reaction product is preferred.
- the step of forming a silicone resin layer having easy peelability and non-adhesiveness on a supporting glass substrate comprises applying release paper silicone on the supporting glass substrate. And then curing the silicone for release paper.
- the release paper silicone is preferably substantially free of non-reactive silicone.
- the silicone for release paper preferably contains a linear polyorganosiloxane having a bur group at both ends and Z or side chain, a methylhydropolysiloxane having a hydrosilyl group in the molecule, and a platinum catalyst. ⁇ .
- the silicone coating for release paper is preferably performed using a die coating method, a spin coating method, or a screen printing method.
- the silicone for release paper is preferably heated and cured at a temperature of 50 to 250 ° C.
- the step of laminating the thin glass substrate on the surface of the support glass substrate on which the silicone resin layer is formed is preferably performed using a vacuum press or a vacuum laminate.
- the present invention also provides a release paper silicone for a thin glass laminate used for laminating a thin glass substrate and a supporting glass substrate.
- the invention's effect in the thin glass laminate of the present invention since the thin glass substrate and the supporting glass substrate are laminated via a flexible silicone resin layer, it is difficult for bubbles to be mixed during the lamination. Even when mixed, there is an advantage that the bubbles can be easily removed by pressure bonding using a roll or a press.
- a vacuum laminating method or a vacuum pressing method when laminating a thin glass substrate and a supporting glass substrate using a vacuum laminating method or a vacuum pressing method, mixing of bubbles is suppressed and adhesion is good.
- the thin glass substrate and the supporting glass substrate are laminated by using a vacuum laminating method or a vacuum press method, even if minute bubbles remain, the convexity of the thin glass substrate that does not cause the bubbles to grow by heating. There is also an advantage that it is difficult for the force to connect to the defects.
- the layer interposed between the thin glass substrate and the supporting glass substrate is a silicone resin layer having excellent heat resistance, the heat resistance is also good.
- the thin glass substrate and the supporting glass substrate are laminated via a silicone resin layer having easy peelability and non-adhesiveness, and thus the thin glass substrate and the supporting glass substrate are supported.
- the glass substrates can be easily separated from each other, and there is no possibility of damaging the thin glass substrate when separating the glass substrates. This characteristic is also exhibited even after the thin glass laminate is heated in the atmosphere at a temperature of 300 ° C for 1 hour. Therefore, it is suitable for use in a manufacturing process of a display device that involves heat treatment.
- the silicone resin layer has low silicone migration, the components in the silicone resin layer are less likely to migrate to the thin glass substrate when the glass substrates are separated from each other. Therefore, after separation, the supporting glass substrate on which the silicone resin layer is formed can be repeatedly used for lamination with other thin glass substrates. In addition, since the components in the silicone resin layer hardly migrate to the surface of the thin glass substrate after separation, there is no possibility of poor adhesion when a polarizing plate or the like is attached to the surface of the thin glass substrate.
- the method for manufacturing a display device of the present invention uses the thin glass laminate of the present invention to prevent the thin glass substrate from being bent and the thin glass substrate from being damaged during the manufacturing. Therefore, the yield of the manufactured display device can be improved.
- the step of laminating a thin glass substrate on the surface of the supporting glass substrate on which the silicone resin layer is formed is performed using a vacuum press or vacuum lamination, bubbles of the silicone resin layer are formed. Mixing can be suppressed. As a result, in the process of forming a transparent electrode such as ITO under vacuum, there is an advantage that the generation of defects starting from bubbles mixed in the silicone resin layer can be suppressed.
- FIG. 1 is a schematic cross-sectional view of a thin glass laminate of the present invention.
- FIG. 2 is a schematic cross-sectional view of a thin glass laminate for explaining a peel test (1) of the present invention.
- FIG. 3 is a schematic cross-sectional view of a thin glass laminate for explaining the shear strength test of the present invention. Explanation of symbols
- the thin glass laminate 10 of the present invention has a structure having a silicone resin layer 3 between a supporting glass substrate 1 and a thin glass substrate 2 as shown in FIG.
- the thin glass substrate is a glass substrate for display devices such as LCD and OLED, and has a thickness of less than 0.3 mm.
- the thickness of the thin glass substrate is preferably 0.2 mm or less, more preferably 0.1 mm or less.
- the thickness of the thin glass substrate is preferably 0.05 mm or more.
- the display device targeted by the present invention is a small display device mainly used for a mobile phone or a mopile terminal such as a PDA.
- the display device is mainly an LCD or OLED, and the LCD includes TN type, STN type, FE type, TFT type, and MIM type.
- the thin glass substrate may be made of alkali glass. However, non-alkali glass is preferred as the thin glass substrate because of its low thermal shrinkage.
- the thin glass substrate preferably has a low thermal shrinkage rate.
- the linear expansion coefficient defined in JIS R3102 (1995) is used as an index of thermal expansion and contraction. It thin glass substrate is preferably from it is good Mashigu linear expansion coefficient is less than at 50 X 10- Seo or less 45 X 10- 7 Z ° C, or less 40 X 10- 7 Z ° C it is most preferably more or less more preferred instrument 20 X 10- 7 / ° C Shi favored Gasara or less immediately 30 X 10- 7 / ° C.
- the thickness of the supporting glass substrate is preferably such a thickness that the laminate with the thin glass substrate can be flowed in the current production line. For example, if the current production line is designed to flow a substrate with a thickness of 0.5 mm and the thickness of the thin glass substrate is 0.1 mm, the thickness of the supporting glass substrate is easy. Together with the thickness of the silicone resin layer having peelability and non-adhesiveness, it is preferably 0.4 mm. As described above, the thickness of the thin glass substrate is preferably 0.2 mm or less.
- the total thickness of the supporting glass substrate and the silicone resin layer having easy peelability and non-adhesiveness is 0.5 mm or more.
- the production line is not limited to one designed to flow a glass substrate having a thickness of 0.5 mm or 0.7 mm, and is designed to flow a glass substrate having a thickness other than these. There may be.
- a glass substrate having a thickness of less than 0.5 mm may be designed to flow, and a glass substrate having a thickness of more than 0.7 mm may be designed to flow.
- the thickness of the supporting glass substrate is preferably 0.3 to 0.8 mm.
- the total thickness of the supporting glass substrate and the easily peelable and non-sticky silicone resin layer is preferably 0.5 mm or more.
- the supporting glass substrate reinforces the strength of the thin glass substrate, the material thereof is not particularly limited and may be either alkali glass or non-alkali glass.
- the support glass substrate preferably has a linear expansion coefficient substantially the same as that of the thin glass substrate.
- the linear expansion coefficient of the supporting glass substrate When the linear expansion coefficient of the supporting glass substrate is larger than the linear expansion coefficient of the thin glass substrate, the expansion of the supporting glass substrate is suppressed by the thin glass laminate in the heating process in the display device manufacturing process. If the linear expansion coefficient of the supporting glass substrate is smaller than the linear expansion coefficient of the thin glass substrate, the thin glass substrate is expanded by the silicone resin due to the expansion of the thin glass substrate. This is because inconvenience of peeling from the layer occurs.
- linear expansion coefficients when the linear expansion coefficients are substantially the same, it does not mean that the linear expansion coefficient of the thin glass substrate and the linear expansion coefficient of the supporting glass substrate completely coincide with each other. There may be some differences. More preferably it is preferred instrument difference in linear expansion coefficient between the thin glass substrate and supporting glass substrate is less than 35 X 10- 7 / ° C or less 25 X 10_ 7 Z ° C, more preferably 15 X or less 10- 7 Z ° C.
- the supporting glass substrate reinforces the thin glass substrate, and when the thin glass laminate moves on the production line, it serves as a base for holding the thin glass substrate, so that the size of the supporting glass substrate is thin glass. It is preferably equal to or larger than the size of the substrate.
- a silicone resin layer having easily peelable and non-adhesive properties is formed on a supporting glass substrate, and then the silicon resin layer of the supporting glass substrate is formed.
- a thin glass substrate is laminated on the formation surface.
- An easily peelable and non-adhesive silicone resin layer is a silicone resin layer with moderate flexibility, which is very difficult to fix a thin glass substrate by adhesive force like an adhesive. This refers to the one that fixes a thin glass substrate by the force caused by the van der Waals force between adjacent solid molecules, that is, the adhesion force. Specific embodiments of the silicone resin layer having easy peelability and non-adhesiveness will be described later.
- the silicone resin layer having easy peelability and non-adhesiveness fixes the thin glass substrate by adhesion
- the thin glass substrate and the supporting glass substrate are shifted in parallel to the lamination interface.
- the shearing force that is, the shearing force shows a high value.
- the thin glass substrate is not damaged during the manufacturing process of the display device. Therefore, there is no possibility that the substrates are separated from each other due to the deviation.
- the shearing force is the point that the thin glass substrate cannot be displaced during the manufacturing process of the display device, and the glass substrate is cracked in the shear strength test described later. without load when the supporting glass substrate is peeled off is 0. 1 kg heavy ZCM 2 or more, particularly 0. 5 kg heavy ZCM 2 or more, more lkg heavy ZCM 2 or der Rukoto are preferred.
- the force to separate the thin glass substrate in the direction perpendicular to the supporting glass substrate force that is, the releasability is remarkably low. For this reason, it is possible to easily separate the supporting glass substrate from the thin glass substrate after performing a predetermined process for manufacturing the display device on the thin glass substrate.
- the peeling force means that the supporting glass substrate can be easily separated from the thin glass substrate force.
- the load at which the supporting glass substrate peels without breaking the glass substrate 2kg heavy ZCM 2 or less, especially 1. 5 kg heavy ZCM 2 or less, further lkg heavy Z cm 2 or less, preferably 0. 5 kg heavy ZCM 2 below.
- the peel force should be evaluated by an angled peel test such as 90 ° peel test and 180 ° peel test. It is.
- the silicone resin layer Since the silicone resin layer is excellent in heat resistance, it has the above-mentioned characteristics that it has a high shearing force but a remarkably low peeling force even after heat treatment, for example, after heating at a temperature of 300 ° C in the atmosphere for 1 hour. Can be demonstrated.
- the silicone resin layer after the heat treatment for example, after heating for 1 hour at a temperature of 300 ° C. in the atmosphere, has the above characteristics, that is, the shearing force is high, but the peeling force is remarkably high. Low is called “excellent peelability after heat treatment”.
- the silicone resin layer having easy peelability and non-adhesiveness is preferably a cured product of silicone for release paper.
- the silicone for release paper is mainly composed of silicone containing in its molecule linear dimethylpolysiloxane with excellent releasability.
- the silicone for release paper contains the above-mentioned main agent and a crosslinking agent, and is fixed to the substrate surface by curing using a catalyst, a photopolymerization initiator, and the like.
- the cured silicone product (cured coating film) for release paper has excellent releasability and moderate flexibility.
- the surface energy of the silicone resin layer having easy peelability and non-adhesiveness is because the support glass substrate can be easily separated from the thin glass substrate easily by removing bubbles mixed in during the lamination. 16-21 ergZcm 2 is preferable. If silicone for release paper having such characteristics is used as a silicone resin layer, a silicone resin layer having appropriate flexibility and easy peelability and non-adhesiveness can be obtained. Whether or not the resin layer contains silicone for release paper can be estimated to some extent from IR (infrared spectroscopy) and the strength and adhesiveness of the resin layer.
- 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. Any of these can be used in the present invention. However, among these, an addition reaction type silicone is used from the viewpoint of easy curing reaction and forming a silicone resin layer that is easily peelable and non-adhesive when a cured film is formed, and the heat resistance of the cured product is excellent. Is most preferred.
- the addition reaction type silicone is composed of a main component having a linear polyorganosiloxane power having a bur group at both ends and Z or side chain, and a methylnodyl polysiloxane having a hydrosilyl group in the molecule.
- Linear polyorganosiloxane having a bur group in both ends and Z or side chain It is a compound represented by the following [i ⁇ 1] and [ii ⁇ 2].
- m and n represent an integer and may be 0.
- m a linear polyorganosiloxane having a bur group at both ends is obtained.
- m an integer of 1 or more, it becomes a linear polyorganosiloxane having a bur group at both ends and side chains.
- m in the formula [ii ⁇ 2] represents an integer of 2 or more
- n represents an integer, and may be 0. In this case, a linear polyorganosiloxane having a vinyl group in the side chain is obtained.
- the methyl hydrogen polysiloxane having a hydrosilyl group in the molecule is a compound represented by the following formula, in which a represents an integer and b represents an integer of 1 or more.
- a part of the methyl group at the terminal of the methylnodrodiene polysiloxane may be a hydrogen atom or a hydroxyl group.
- the mixing ratio of the main agent composed of linear polyorganosiloxane having a bur group in both ends and Z or side chain and the crosslinking agent composed of methylhydrogen polysiloxane having hydrosilyl group in the molecule It is preferable to adjust the mixing ratio so that the molar ratio of the group to the bur group is 1.3 / 1 to 0.7Z1. In particular, 1.2Zl ⁇ 0. It is preferable to adjust the mixing ratio to 8Z1.
- the peel strength after heat treatment will increase and the peelability may not be sufficient.
- the support glass substrate is often peeled after the heat treatment, and the peelability after the heat treatment is a big problem.
- the molar ratio of hydrosilyl group to vinyl group is less than 0.7Z1, the crosslink density of the cured product is lowered, which may cause a problem in chemical resistance.
- the cause of the increase in peel strength after heat treatment is not clear, but heat treatment causes unreacted hydrosilyl groups in the cured product. It is thought that some reaction with the silanol group on the glass surface is involved.
- a platinum-based catalyst is preferably used, and a known catalyst can be used as the platinum-based catalyst.
- a known catalyst can be used as the platinum-based catalyst.
- Specific examples include chloroplatinic acid such as chloroplatinic acid and salt and diplatinic acid, alcohol compounds of chloroplatinic acid, aldehyde compounds, and chain salts of chloroplatinic acid and various olefins. can give.
- the platinum-based catalyst is preferably used in an amount of 0.1 to 20 parts by mass, more preferably 1 to: LO parts by mass, with respect to 100 parts by mass of silicone for release paper.
- Silicone for release paper may be any of a solvent type, an emulsion type, and a solventless type.
- the solvent-free type is preferred in terms of productivity, safety, and environmental characteristics.
- bubbles do not easily remain in the resin layer because it does not contain a solvent that causes foaming during curing, that is, heat curing, ultraviolet curing, or electron beam curing.
- the silicone resin layer having easy peelability and non-adhesiveness may be formed of only one type of release paper silicone, but may be formed using two or more types of release paper silicone. It may be done. When two or more types of release paper silicone are used, the silicone resin layer may have a multilayer structure in which two or more types of release paper silicone are laminated together. It may be a mixed silicone resin layer containing two or more types of release paper silicone.
- the silicone resin layer having easily peelable and non-adhesive properties separated the glass substrates from each other. At this time, it is preferable that the components in the silicone resin layer hardly migrate to the thin glass substrate, that is, have a low silicone migration property.
- the ease of migration of components in the silicone resin layer can be determined using the residual adhesion rate of the silicone resin layer as an index.
- the residual adhesion rate of the silicone resin layer can be determined by the following method.
- a 15 mm wide standard adhesive tape (Cellotape CT405A—15 (manufactured by Nichiban Co., Ltd.)) is pressure-bonded to the surface of the silicone resin layer with the help of human hands, and heated in the atmosphere at 70 ° C for 20 hours. After 20 hours, the standard adhesive tape is peeled off from the silicone resin layer. Affix the peeled standard adhesive tape to the surface of a clean glass substrate (eg, AN100 (Asahi Glass Co., Ltd.)), and then measure the 180 ° peel strength (300 mmZmin) (peel strength (A)).
- a clean glass substrate eg, AN100 (Asahi Glass Co., Ltd.
- the residual adhesion rate is obtained by the following formula.
- Residual adhesion rate peel strength (A) Z peel strength (B) X 100
- the silicone resin layer having easy peelability and non-adhesiveness preferably has a residual adhesion ratio determined by the above-described measurement method of 95% or more, more preferably 98% or more. Yes. If the residual adhesion rate is 95% or more, the migration of the components in the resin layer from the silicone resin layer to the surface of the thin glass substrate is considered to be extremely low. Therefore, after separating the glass substrates, the supporting glass substrate on which the silicone resin layer is formed can be repeatedly used for lamination with other thin glass substrates. In addition, since the components in the silicone resin layer hardly migrate to the surface of the thin glass substrate after separation, there is no possibility of poor adhesion when a polarizing plate or the like is attached to the surface of the thin glass substrate.
- a silicone for release paper that does not contain a component having high migration may be used.
- release paper A non-reactive silicone may be blended in order to easily release the corn.
- a non-reactive silicone a linear dimethylpolysiloxane with a very high molecular weight, a vinyl group or a higher alkyl group was introduced to reduce the compatibility with the cured film. Is used. Since such a non-reactive silicone is a component having a high migration property, the silicone for release paper used in the present invention preferably has a non-reactive silicone content of 5% by mass or less. More preferably, it is substantially free of non-reactive silicone.
- silicones for release paper include, specifically, KNS-320A, KS-847 (all manufactured by Shin-Etsu Silicone Co., Ltd.), TPR6700 (manufactured by GE Toshiba Silicone Co., Ltd.), bur silicone A combination of “8500” (Arakawa Chemical Industries, Ltd.) and methylhydrogen polysiloxane “12031” (Arakawa Chemical Industries, Ltd.), berylsilicone “11364” (Arakawa Chemical Industries, Ltd.) and methyl Examples include a combination with hydrogenpolysiloxane ‘12031’ and a combination of butyl silicone “11365” and methylhydrogenpolysiloxane “12031”.
- KNS-320A, KS-847 and TPR6700 are silicones that already contain a main agent and a crosslinking agent.
- the thickness of the silicone resin layer having easy peelability and non-adhesiveness is preferably 1 to: L00 ⁇ m.
- the thickness of the silicone resin layer is less than: m, the thin glass substrate and the silicone resin layer may be insufficiently adhered. In addition, even when foreign matter is present, it tends to lead to a convex defect of the thin glass substrate.
- the thickness of the silicone resin layer is more preferably 5 to 20 ⁇ m. If the thickness of the silicone resin layer is 5 to 20 m, good adhesion to a wide range of thin glass substrates can be achieved.
- the method of forming a silicone resin layer having easy peelability and non-adhesiveness on a supporting glass substrate is not particularly limited, and a known method force can be appropriately selected.
- silicone for release paper is used for the silicone resin layer
- the silicone for release paper is cured after laminating the thin glass after coating the silicone paper for release paper on the support glass substrate surface.
- known methods can be used. Specifically, for example, spray coating, die coating, spin coating, dip coating, roll coating, bar coating, and the like. Examples include coating methods, screen printing methods, and gravure coating methods.
- These coating methods can be appropriately selected according to the type of silicone for release paper.
- the silicone for release paper is a solventless type
- a die coating method, a spin coating method, and a screen printing method are suitable.
- the coating amount is preferably lg / m 2 to: LOOg / m 2 , more preferably 5 gZm 2 to 20 gZm 2 .
- a mixture of a release paper silicone containing a main agent and a crosslinking agent and a catalyst is applied on a supporting glass substrate by any of the methods described above and then heated. Harden.
- the heat-curing conditions vary depending on the amount of the catalyst. For example, when 2 parts by mass of a platinum-based catalyst is blended with 100 parts by mass of the release paper silicone, 50 ° C to 250 ° C in air. Preferably, the heat curing is performed at 100 ° C to 200 ° C for 5 to 60 minutes, preferably 10 to 30 minutes.
- the curing reaction In order to obtain a silicone resin layer having a low silicone migration property, it is preferable to proceed the curing reaction as much as possible so that an unreacted silicone component does not remain in the silicone resin layer. If heat-cured under the above conditions, it is possible to prevent unreacted silicone components from remaining in the silicone resin layer. Compared to the above conditions, if the heating time is too long or the heating temperature is too high, the acid degradation of the silicone resin occurs at the same time, and a low molecular weight silicone component is produced. I'll end up. It is also preferable to allow the curing reaction to proceed as much as possible so that an unreacted silicone component remains in the silicone resin layer, in order to improve the peelability after heat treatment.
- a thin glass substrate is laminated on the silicone resin forming surface of the supporting glass substrate.
- silicone for release paper is used for the silicone resin layer
- the silicone resin layer coated on the support glass substrate is heated and cured to form a silicone resin layer, and then the silicone resin formation surface of the support glass substrate Laminate a thin glass substrate.
- the release paper silicone By curing the release paper silicone with heat, the cured silicone resin is chemically bonded to the support glass, and the silicone resin layer is bonded to the support glass by an anchor effect. By these actions, the silicone resin layer is fixed to the supporting glass substrate.
- the thin glass substrate is fixed to the silicone resin layer by the force caused by the van der Waalska between the adjacent solid molecules, that is, the adhesion force, which is very close to the silicone resin layer of the supporting glass substrate.
- the adhesion force which is very close to the silicone resin layer of the supporting glass substrate.
- the release paper silicone by using the release paper silicone, the supporting glass substrate and the thin glass substrate can be held in a laminated state, and when the thin glass substrate is separated, the silicone is applied to the surface of the thin glass substrate. It is possible to prevent migration of the components of the resin layer, and as a result, the object of the present invention can be achieved.
- the procedure for laminating the thin glass substrate on the silicone resin-forming surface of the supporting glass substrate can be carried out using a known method.
- the thin glass glass is formed on the silicone resin-forming surface under a normal pressure environment.
- the laminate may be pressure-bonded using a roll or a press. By pressing with a roll or a press, the silicone resin layer and the thin glass substrate are more closely attached.
- bubbles mixed in the silicone resin layer can be easily removed by pressure bonding with a roll or a press.
- a method for manufacturing the display device of the present invention will be described.
- a predetermined process for manufacturing the display device is performed on the thin glass substrate of the laminate.
- the term “predetermined process for manufacturing a display device” includes a wide variety of processes performed in the manufacturing process when manufacturing a display device with LCD or OLED.
- processing performed here in the case of manufacturing an LCD, for example, a process of forming an array on a thin glass substrate, a color filter is formed on a thin glass substrate different from the thin glass substrate.
- various processes such as a process of laminating a thin glass substrate on which an array is formed and a thin glass substrate on which a color filter is formed (array 'color filter laminating process).
- the treatment include pure water cleaning, drying, film formation, resist coating, exposure, development, etching, and resist removal.
- the process performed after the array color filter bonding process includes a liquid crystal injection process and an injection port sealing process performed after the process, and includes processes performed in these processes.
- both the glass substrate forming the array and the glass substrate forming the color filter may not be the thin glass substrate.
- a thin glass substrate on which an array is formed and a normal thickness glass substrate on which a color filter is formed may be bonded together, or a normal thickness glass substrate on which an array is formed, and a color filter.
- the normal thickness of the glass substrate here is 0.3 mm or more. This means a glass substrate.
- the thin glass substrate and the supporting glass substrate are separated. Separation can be performed by manual peeling, but it can be more easily peeled off by giving an edge to the edge with a razor blade or by injecting air into the layer interface. Since the peeled supporting glass substrate is in a state in which a silicone resin layer having easy peelability and non-adhesiveness is still formed, it can be used again for lamination with another thin glass substrate. . If the silicone resin layer has low silicone migration, the silicon resin layer after separation has a high residual adhesion rate. Therefore, the supporting glass on which the silicone resin layer is formed is used. The substrate can be used repeatedly for lamination with other thin glass substrates.
- a display device having the thin glass substrate is obtained through a desired process.
- the steps carried out here are, for example, a step of dividing into cells of a desired size, a step of injecting liquid crystal and then sealing the inlet, a step of attaching a polarizing plate, a module formation Process.
- a process of assembling a thin glass substrate on which an organic EL structure is formed and a counter substrate is included. In the process of dividing into cells of a desired size, the strength of the thin glass substrate is not reduced by the cutting process, and no cullet is produced, so cutting with a laser cutter is preferred.
- the present invention also provides a release paper silicone for a thin glass laminate described above, which is used for laminating a supporting glass substrate and a thin glass substrate.
- the thin glass substrate was in close contact with the silicone resin layer without generating bubbles, and had no convex defects and good smoothness.
- the formed thin glass laminate A was evaluated as follows.
- the thin glass laminate A was placed so that the thin glass substrate was on the upper side, and the supporting glass substrate was fixed using a jig. In this state, a part of the peripheral portion of the thin glass substrate was peeled off with the razor blade, and the thin glass substrate was further separated by hand from the support glass substrate cover.
- the above-mentioned peel test was performed on the thin glass laminate A after heat treatment in the atmosphere at 300 ° C for 1 hour.
- the support glass substrate can be peeled off without destroying the thin glass substrate.
- the heat resistance was also good.
- the test was carried out using a jig as shown in Fig. 2.
- Thin glass laminate A is cut to a size of 50 mm x 50 mm, and the glass (supporting glass substrate 40 and thin glass substrate 50) on both sides of the thin glass laminate A is 50 mm long x 50 mm wide x 5 mm thick.
- Polycarbonate 20 was bonded together with an epoxy two-component glass adhesive.
- polycarbonate 25 having a length of 50 mm, a width of 50 mm, and a thickness of 5 mm was further vertically bonded to the surfaces of both the bonded polycarbonates 20. As shown in Fig. 2, the polycarbonate 25 is bonded in the vertical direction. The horizontal direction was the position parallel to the side of the polycarbonate 20 at the position of the end of the G-20.
- a thin glass laminate A in which polycarbonates 20 and 25 were bonded together was placed so that the supporting glass substrate was on the lower side.
- the polycarbonate 25 affixed to the thin glass substrate side is fixed with a jig, and the polycarbonate 25 affixed to the support glass substrate side is pulled vertically downward at a speed of 30 OmmZmin. supporting glass substrate when heavy ZCM 2) painters mosquitoes ⁇ one was was peeling. There were no cracks in the supporting glass substrate or thin glass substrate.
- Peeling test (1) instead of using the thin glass laminate A (before heating), the peeling test (1) was conducted except that the thin glass laminate A after heat treatment in the atmosphere at 300 ° C for 1 hour after lamination was used. ) A peel test (1) (after heating) was performed in the same manner as (before heating). The supporting glass substrate peeled off when a load of 45 kg was applied (1.8 kg of weight Zcm 2 ). The supporting glass substrate and the thin glass substrate were not cracked.
- the test was carried out using a jig as shown in Fig. 3.
- Sheet glass laminate A is cut into a size of 25 mm x 25 mm, and the glass (supporting glass substrate 40 and thin glass substrate 50) on both sides of the thin glass laminate A is 25 mm long x 50 mm wide x 3 mm thick.
- Polycarbonate 30 was bonded together with an epoxy two-component glass adhesive. As shown in Fig. 3, the area of the place where the shells are used is 25 mm long x 25 mm wide.
- the lower surface portion of the supporting glass substrate and the right half portion of the polycarbonate 30 were used, and the upper surface portion of the thin glass substrate and the left half portion of the polycarbonate 30 were used.
- the polycarbonate 30 bonded to the thin glass substrate was fixed with a jig, and the polycarbonate 30 bonded to the supporting glass substrate was pulled in the horizontal direction (the length direction of the polycarbonate 30) in FIG.
- the support glass substrate peeled off when the load of 13 kg weight (2.1 kg weight Zcm 2 ) was heavy.
- the supporting glass substrate and the thin glass substrate were not cracked.
- the thin glass laminate A after firing also had the same value as before firing. (5) Residual adhesion rate measurement
- Solvent-free addition reaction type silicone for release paper KNS 320 A manufactured by Shin-Etsu Silicone Co., Ltd.
- platinum catalyst CAT-PL-56 manufactured by Shin-Etsu Silicone Co., Ltd. 2 parts by mass Linear polyorganosiloxane having a vinyl group (“8500” manufactured by Arakawa Chemical Industries, Ltd.), methylidogen polysiloxane having a hydrosilyl group in the molecule (“12031” manufactured by Arakawa Chemical Industries, Ltd.), and platinum-based A thin glass laminate (thin glass laminate B) of the present invention was obtained in the same manner as in Example 1 except that a mixture with a catalyst (“CAT12070” manufactured by Arakawa Chemical Industries, Ltd.) was used.
- the mixing ratio of the linear polyorganosiloxane and the methyl nodrodiene polysiloxane was adjusted so that the molar ratio of the hydrosilyl group to the bur group was 1.5Z1.
- the platinum-based catalyst was added in an amount of 5 parts by mass with respect to 100 parts by mass in total of the linear polyorganosiloxane and the methyl nodrodiene polysiloxane.
- the thin glass substrate was in close contact with the silicone resin layer without generating bubbles, and had no convex defects and good smoothness.
- the formed thin glass laminate B was evaluated as follows.
- the thin glass laminate B was placed so that the thin glass substrate was on the upper side, and the supporting glass substrate was fixed using a jig. In this state, a part of the periphery of the thin glass substrate was peeled off with a razor, and the thin glass substrate was further separated from the support glass substrate by hand, and it was easily peeled off.
- the above peel test was performed on the thin glass laminate B after heat treatment in the atmosphere at 300 ° C for 1 hour.
- the support glass substrate can be peeled off without destroying the thin glass substrate.
- the heat resistance was also good.
- the thin glass laminate B was used instead of using the thin glass laminate A in Example 1, the thin glass laminate B was used.
- a peel test (1) (before heating) was carried out in the same manner as in the peel test (1) (before heating) of Example 1 except that the above test was performed.
- the supporting glass substrate was peeled off when a 9 kg load (0.36 kg Zcm 2 ) was applied. No cracking or the like occurred in the supporting glass substrate or the thin glass substrate.
- the peel test (1) (after heating) was performed in the same manner as the peel test (1) (after heating) in Example 1 except that the thin glass laminate B was used.
- the supporting glass substrate peeled off when a 15 kg weight (0.6 lkg weight Zcm 2 ) was applied. No cracking or the like occurred in the supporting glass substrate or the thin glass substrate.
- Example 1 a shear strength test was conducted in the same manner as in the shear strength test of Example 1 except that the thin glass laminate B was used.
- the supporting glass substrate was peeled off when a 9 kg weight load (1.4 kg weight / cm 2 ) was applied.
- the supporting glass substrate and the thin glass substrate were not cracked.
- the thin glass laminate B after firing had the same value as before firing.
- the residual adhesion rate of the silicone resin layer of the thin glass laminate B was measured, and the residual adhesion rate was 108%.
- Example 2 the molar specific force of hydrosilyl group and bur group was 1.
- Example 2 except that the mixing ratio of linear polyorganosiloxane and methylnodrodiene polysiloxane was adjusted to OZ1.
- a thin glass laminate thin glass laminate C was obtained.
- the thin glass substrate was in close contact with the silicone resin layer without generating bubbles, had no convex defects, and had good smoothness.
- the formed thin glass laminate C was evaluated as follows.
- the thin glass laminate C was placed so that the thin glass substrate was on the upper side, and the supporting glass substrate was fixed using a jig. In this state, a part of the periphery of the thin glass substrate is supported with a razor. When the glass substrate was peeled off, and the thin glass substrate was further separated from the supporting glass substrate by hand, it could be easily peeled off.
- the above peel test was performed on the thin glass laminate C after heat treatment in the atmosphere at 300 ° C for 1 hour.
- the thin glass substrate was easily peeled off without destroying the thin glass substrate.
- the heat resistance was also good.
- the peel test (1) (before heating) was performed in the same manner as in the peel test (1) (before heating) of Example 1 except that the thin glass laminate C was used.
- the supporting glass substrate peeled off when a load of 12 kg weight (0.47 kg weight Zcm 2 ) was applied. No cracking or the like occurred in the supporting glass substrate or the thin glass substrate.
- Peel test (1) (after heating) in the same manner as the peel test (1) (after heating) of Example 1 except that the thin glass laminate C is used instead of the thin glass laminate A in Example 1.
- 12kg heavy load (0. 47kg heavy ZCM 2) is the support glass substrate when bought forces peeled. No cracking or the like occurred in the supporting glass substrate or the thin glass substrate.
- a shear strength test was conducted in the same manner as the shear strength test of Example 1 except that the thin glass laminate C was used instead of the thin glass laminate A in Example 1. 12 kg supporting glass substrate when the heavy load (1. 9 kg weight / cm 2) is applied is peeled. The supporting glass substrate and the thin glass substrate were not cracked. The thin glass laminate C after firing also had the same value as before firing.
- the residual adhesion rate of the silicone resin layer of the thin glass laminate C was measured, and the residual adhesion rate was 105%.
- Solvent-free addition reaction type release paper silicone (Shin-Etsu Silicone Co., Ltd. KNS 320 A) instead of solvent-type addition reaction type release paper silicone (Shin-Etsu Silicone Co., Ltd. KS-847) and platinum catalyst (Shin-Etsu Silicone Co., Ltd.) Instead of company-made CAT— PL— 56)
- the thin glass laminate (thin glass laminate D) of the present invention was obtained by carrying out the same procedure as in Example 1 except that a platinum-based catalyst (CAT-PL-50T manufactured by Shin-Etsu Silicone Co., Ltd.) was used. It was.
- the thin glass substrate was in close contact with the silicone resin layer without generating bubbles, and had no convex defects and good smoothness.
- an LCD is manufactured using the thin glass laminate A obtained in Example 1.
- Two sheet glass laminates A are prepared, and one is subjected to an array forming process to form an array on the surface of the sheet glass substrate.
- the remaining one sheet is subjected to a color filter forming process to form a color filter on the surface of the thin glass substrate.
- the edge of peeling is given to the end with a razor blade to separate the supporting glass substrate.
- the thin glass substrate is cut using a laser cutter and divided into 28 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 process of attaching a polarizing plate to the formed liquid crystal cell is performed, and then a module forming process is performed to obtain an LCD.
- the resulting LCD has no problems in terms of characteristics.
- an LCD is manufactured using the thin glass laminate A obtained in Example 1 and a 0.7 mm thick glass-free glass substrate.
- a thin glass laminate A is prepared, and a color filter forming process is performed to form a color filter on the surface of the thin glass substrate.
- an array forming step is performed on a non-alkali glass substrate having a thickness of 0.7 mm (AN-100 manufactured by Asahi Glass Co., Ltd.) to form an array on the surface of the non-alkali glass substrate having a thickness of 0.7 mm.
- the edge is peeled off at the end with a razor blade.
- the supporting glass substrate is separated from the glass laminate.
- the thin glass substrate-an alkali-free glass substrate bonded body is divided into 28 cells measuring 51 mm long by 38 mm wide.
- the thin glass substrate is cut with a laser cutter.
- the alkali-free glass substrate is cut using a laser-powered cutter or a scribe-break method.
- a liquid crystal injection step and an injection port sealing step are performed to form a liquid crystal cell.
- a process of attaching a polarizing plate to the formed liquid crystal cell is performed, and then a module forming process is performed to obtain an LCD.
- the resulting LCD has no problems in terms of characteristics.
- an LCD is manufactured using the thin glass laminate B obtained in Example 2.
- Two sheet glass laminates B are prepared, and an array is formed on one sheet to form an array on the surface of the sheet glass substrate.
- the remaining one sheet is subjected to a color filter forming process to form a color filter on the surface of the thin glass substrate.
- the edge of peeling is given to the end with a razor blade to separate the supporting glass substrate.
- the thin glass substrate is cut using a laser cutter and divided into 28 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 process of attaching a polarizing plate to the formed liquid crystal cell is performed, and then a module forming process is performed to obtain an LCD.
- the resulting LCD has no problems in terms of characteristics.
- an OLED is manufactured using the thin glass laminate D obtained in Example 4.
- a thin glass laminate by carrying out a 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 a thin glass substrate of D.
- the supporting glass substrate is separated.
- the thin glass substrate was cut using a laser cutter and divided into 40 cells of 41 mm in length x 30 mm in width, and then the thin glass substrate on which the organic EL structure was formed and the counter substrate were assembled. Implement the module formation process to make the OLED.
- the OLED obtained in this way has no problem in terms of characteristics.
- a silicone resin (SH805 manufactured by Toray Dow Coung Co., Ltd.) is coated on a support glass substrate with a spin coater, and heat cured at 250 ° C for 1 hour to form a silicone resin layer with a thickness of 16 ⁇ m.
- a thin glass laminate E of Comparative Example was obtained by carrying out the same procedure as in Example 1 except that it was obtained.
- the silicone resin layer and the supporting glass substrate were not sufficiently adhered, and the laminate was not constituted.
- a silicone adhesive (YR3340 manufactured by GE Toshiba Silicone Co., Ltd.) was applied on a support glass substrate with a spin coater, and heat cured at 150 ° C for 10 minutes in the air to form a silicone resin with a film thickness of 16 ⁇ m. Except for obtaining the layer, the same procedure as in Example 1 was performed to obtain a thin glass laminate F of Comparative Example.
- the thin glass substrate was sufficiently adhered to the silicone resin layer and had good smoothness, but air bubbles were found in the silicone resin layer, and the mixed air bubbles were removed. I didn't do it.
- a peel test (1) before heating
- a peel test (1) after heating
- a shear strength test were conducted in the same manner as in Example 1.
- the lath substrate did not peel off, and peeling occurred at the interface between the polycarbonate and the glass substrate. Therefore, the supporting glass substrate and the thin glass substrate could not be peeled off.
- the thin glass laminate obtained by the present invention can be used as a glass substrate for various display devices. It should be noted that the entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2005-230434, filed on August 9, 2005, are incorporated herein by reference. It is included as an indication.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020087002928A KR101285442B1 (ko) | 2005-08-09 | 2006-07-21 | 박판 유리 적층체 및 박판 유리 적층체를 이용한 표시장치의 제조 방법 |
CN2006800296381A CN101242951B (zh) | 2005-08-09 | 2006-07-21 | 薄板玻璃层压体以及利用薄板玻璃层压体的显示装置的制造方法 |
EP06781447.5A EP1914066B1 (en) | 2005-08-09 | 2006-07-21 | Thin sheet glass laminate and method for manufacturing display using thin sheet glass laminate |
JP2007529473A JP5200538B2 (ja) | 2005-08-09 | 2006-07-21 | 薄板ガラス積層体及び薄板ガラス積層体を用いた表示装置の製造方法 |
US12/028,943 US8652643B2 (en) | 2005-08-09 | 2008-02-11 | Thin plate glass laminate and process for producing display device using thin plate glass laminate |
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JP2005230434 | 2005-08-09 | ||
JP2005-230434 | 2005-08-09 |
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US12/028,943 Continuation US8652643B2 (en) | 2005-08-09 | 2008-02-11 | Thin plate glass laminate and process for producing display device using thin plate glass laminate |
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WO2007018028A1 true WO2007018028A1 (ja) | 2007-02-15 |
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EP (1) | EP1914066B1 (ja) |
JP (1) | JP5200538B2 (ja) |
KR (1) | KR101285442B1 (ja) |
CN (1) | CN101242951B (ja) |
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KR20230006768A (ko) | 2016-12-28 | 2023-01-11 | 에이지씨 가부시키가이샤 | 적층체, 실리콘 수지층이 부착된 지지 기재, 실리콘 수지층이 부착된 수지 기판, 및 전자 디바이스의 제조 방법 |
KR20230002139A (ko) | 2016-12-28 | 2023-01-05 | 에이지씨 가부시키가이샤 | 적층체, 실리콘 수지층이 부착된 지지 기재, 실리콘 수지층이 부착된 수지 기판, 전자 디바이스의 제조 방법 |
KR20240017037A (ko) | 2016-12-28 | 2024-02-06 | 에이지씨 가부시키가이샤 | 적층체, 실리콘 수지층이 부착된 지지 기재, 실리콘 수지층이 부착된 수지 기판, 전자 디바이스의 제조 방법 |
KR20180077062A (ko) | 2016-12-28 | 2018-07-06 | 아사히 가라스 가부시키가이샤 | 적층체, 실리콘 수지층이 부착된 지지 기재, 실리콘 수지층이 부착된 수지 기판, 전자 디바이스의 제조 방법 |
US11999135B2 (en) | 2017-08-18 | 2024-06-04 | Corning Incorporated | Temporary bonding using polycationic polymers |
US11331692B2 (en) | 2017-12-15 | 2022-05-17 | Corning Incorporated | Methods for treating a substrate and method for making articles comprising bonded sheets |
KR20230024273A (ko) | 2020-06-11 | 2023-02-20 | 에이지씨 가부시키가이샤 | 적층체, 전자 디바이스용 부재를 구비하는 적층체, 전자 디바이스의 제조 방법 |
Also Published As
Publication number | Publication date |
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US8652643B2 (en) | 2014-02-18 |
TWI411984B (zh) | 2013-10-11 |
TW200715230A (en) | 2007-04-16 |
US20080135175A1 (en) | 2008-06-12 |
JP5200538B2 (ja) | 2013-06-05 |
JPWO2007018028A1 (ja) | 2009-02-19 |
EP1914066A4 (en) | 2010-06-02 |
KR101285442B1 (ko) | 2013-07-12 |
EP1914066A1 (en) | 2008-04-23 |
CN101242951B (zh) | 2012-10-31 |
KR20080036069A (ko) | 2008-04-24 |
CN101242951A (zh) | 2008-08-13 |
EP1914066B1 (en) | 2016-09-07 |
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