WO2014171247A1 - Procédé d'essai de flexion, procédé de fabrication d'article en feuille, dispositif d'essai de flexion, feuille cassante, feuille cassante avec élément fixé à celle-ci, et dispositif électronique - Google Patents

Procédé d'essai de flexion, procédé de fabrication d'article en feuille, dispositif d'essai de flexion, feuille cassante, feuille cassante avec élément fixé à celle-ci, et dispositif électronique Download PDF

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Publication number
WO2014171247A1
WO2014171247A1 PCT/JP2014/057160 JP2014057160W WO2014171247A1 WO 2014171247 A1 WO2014171247 A1 WO 2014171247A1 JP 2014057160 W JP2014057160 W JP 2014057160W WO 2014171247 A1 WO2014171247 A1 WO 2014171247A1
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WO
WIPO (PCT)
Prior art keywords
support plate
sheet
support
brittle
glass sheet
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Application number
PCT/JP2014/057160
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English (en)
Japanese (ja)
Inventor
純一 ▲角▼田
研一 江畑
小池　章夫
裕介 小林
健 山内
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.)
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Application filed by 旭硝子株式会社 filed Critical 旭硝子株式会社
Priority to JP2015512363A priority Critical patent/JP6387958B2/ja
Priority to KR1020157024823A priority patent/KR20150140647A/ko
Priority to CN201480015847.5A priority patent/CN105143848B/zh
Publication of WO2014171247A1 publication Critical patent/WO2014171247A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/006—Crack, flaws, fracture or rupture
    • G01N2203/0062—Crack or flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/006—Crack, flaws, fracture or rupture
    • G01N2203/0062—Crack or flaws
    • G01N2203/0064—Initiation of crack
    • 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
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • 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
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film

Definitions

  • the present invention relates to a bending test method, a sheet manufacturing method, a bending test apparatus, a brittle sheet, a brittle sheet with elements, and an electronic device.
  • Glass substrates are used as substrates for electronic devices such as image display panels, solar cells, and thin film secondary batteries.
  • a flexible glass sheet has been developed as a glass substrate.
  • Patent Document 1 As a test method for examining the durability of a glass sheet, a method of bending the glass sheet along the outer periphery of the roller while conveying the glass sheet with a roller has been proposed (for example, see Patent Document 1). Further, as a glass sheet test method, a method of gradually narrowing the interval between two parallel plates sandwiching a curved glass sheet is also known (see, for example, Non-Patent Document 1).
  • the position where the tensile stress is generated in the sheet does not change. Therefore, if there are no defects (scratches, deposits, inclusions, etc.) that are the starting points of cracks at the position where the tensile stress is generated, the fracture strength is detected to be high and the reliability is low.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a highly reliable bending test method and the like.
  • the first support plate and the second support plate each support a sheet containing a brittle material, Moving the position of the second support plate relative to the first support plate in a state in which the distance between the support surface of the first support plate and the support surface of the second support plate that are parallel to each other is maintained; There is provided a bending test method for examining whether or not a crack is formed in the sheet material to be bent between the first support plate and the second support plate.
  • a highly reliable bending test method is provided.
  • FIG. 1 It is a figure which shows the mode of the test of the bending test apparatus by one Embodiment of this invention. It is a top view of the bending test apparatus of FIG. It is a figure which shows the state at the time of the setting of the sheet
  • FIG. 1 is a diagram showing a test state of a bending test apparatus according to an embodiment of the present invention.
  • FIG. 1 when the lower support plate is moved in the left direction in the figure with respect to the base in the state indicated by the solid line, the state indicated by the alternate long and short dash line is obtained.
  • FIG. 2 is a top view of the bending test apparatus of FIG.
  • FIG. 3 is a diagram illustrating a state when the sheet is set in the bending test apparatus of FIG. 1. In FIG. 1 and FIG. 3, a part of moving part is broken and shown.
  • the bending test apparatus 10 is an apparatus for bending a sheet material including a brittle material.
  • a glass sheet 2 is used as the sheet.
  • the durability of the glass sheet 2 can be understood by examining whether or not a crack is formed in the curved glass sheet 2.
  • the glass sheet 2 may be used as a substrate of an electronic device such as an image display panel, a solar battery, or a thin film secondary battery, and various elements may be formed on the glass sheet 2.
  • the glass type of the glass sheet 2 may be various, for example, soda lime glass, non-alkali glass, or the like.
  • the thickness of the glass sheet 2 is, for example, 200 ⁇ m or less. When the glass sheet 2 has a thickness of 200 ⁇ m or less, it is possible to produce a glass roll by winding the glass sheet 2 in a spiral shape.
  • the thickness of the glass sheet 2 is preferably 150 ⁇ m or less, more preferably 100 ⁇ m or less, and still more preferably 50 ⁇ m or less. Moreover, the thickness of the glass sheet 2 becomes like this. Preferably it is 0.1 micrometer or more, More preferably, it is 1 micrometer or more, More preferably, it is 5 micrometers or more.
  • the long side length may be 150 mm to 3050 mm, and the short side length may be 100 mm to 2850 mm.
  • the bending test apparatus 10 includes, as shown in FIGS. 1 to 3, for example, a base 12, an upper support board 14 as a first support board, a lower support board 16 as a second support board, a moving unit 20, and an adjustment.
  • Unit 30 detection unit 40, support unit 50, and placement unit 60.
  • the upper support plate 14 supports the glass sheet 2.
  • the support surface 14a of the upper support plate 14 may be a flat surface facing downward, and may be a surface that fixes one end of the glass sheet 2 with a tape or the like, for example.
  • the surface of the upper support plate 14 opposite to the support surface 14a may be flat or not flat.
  • the upper support plate 14 may be composed of a resin layer in contact with the glass sheet 2 and a metal main body in order to prevent the glass sheet 2 from being damaged.
  • the resin layer may be separably attached to the metal main body. When fragments or the like of the glass sheet 2 are stuck in the resin layer, the resin layer can be exchanged.
  • the lower support plate 16 supports the glass sheet 2 in the same manner as the upper support plate 14.
  • the support surface 16a of the lower support board 16 may be an upward flat surface, for example, a mounting surface on which the other end of the glass sheet 2 is placed. The other end of the glass sheet 2 is pressed against the support surface 16a of the lower support board 16 by gravity and fixed by a frictional force.
  • a stopper 17 that contacts the other end of the glass sheet 2 may be provided on the support surface 16 a of the lower support board 16 in order to prevent the glass sheet 2 from being displaced.
  • the surface of the lower support plate 16 opposite to the support surface 16a may be flat or not flat.
  • the lower support board 16 may be composed of a resin layer in contact with the glass sheet 2 and a metal main body in order to prevent the glass sheet 2 from being damaged.
  • the resin layer may be separably attached to the metal main body. When fragments or the like of the glass sheet 2 are stuck in the resin layer, the resin layer can be exchanged.
  • the moving unit 20 moves the position of the lower support plate 16 with respect to the upper support plate 14 while maintaining the distance D between the support surface 14a of the upper support plate 14 and the support surface 16a of the lower support plate 16 that are parallel to each other. Let The moving unit 20 moves the lower support plate 16 parallel to the base 12 in order to move the position of the lower support plate 16 with respect to the upper support plate 14.
  • the moving part 20 of this embodiment moves the lower side support board 16 in parallel with respect to the base 12
  • the moving unit 20 includes, for example, a lifting frame 21, a motor 22, a ball screw mechanism 23, a slider block 24, and the like.
  • the lifting frame 21 is movable with respect to the base 12.
  • the motor 22 may be an electric servo motor, for example, and is attached to the lifting frame 21.
  • the ball screw mechanism 23 converts the rotational motion of the motor 22 into a linear motion and transmits it to the slider block 24.
  • the slider block 24 is connected to the lower support plate 16 and moves in parallel with the base 12 together with the lower support plate 16.
  • the motor 22 rotates the ball screw shaft 23a and moves the ball screw nut 23b under the control of a controller constituted by a microcomputer or the like. As the ball screw nut 23 b moves, the slider block 24 and the lower support plate 16 move in parallel to the base 12.
  • the motor 22 of this embodiment is a rotary motor, a linear motor may be sufficient.
  • the linear motor includes a stator and a mover, and a lower support board 16 is attached to the mover. Due to the magnetic force acting between the stator and the mover, the mover moves linearly and the lower support plate 16 moves.
  • the adjusting unit 30 adjusts the distance D between the support surface 14a of the upper support plate 14 and the support surface 16a of the lower support plate 16 that are parallel to each other.
  • the adjustment unit 30 may raise and lower the lower support plate 16 with respect to the base 12 in order to adjust the interval D.
  • the adjustment unit 30 of the present embodiment raises and lowers the lower support plate 16 with respect to the base 12, but may also raise and lower the upper support plate 14 with respect to the base 12. You may raise / lower both of the support boards 14. In any case, the distance D between the upper support plate 14 and the lower support plate 16 can be adjusted.
  • the adjustment unit 30 is constituted by a pantograph jack, for example.
  • the adjusting unit 30 is disposed between the moving unit 20 (specifically, the lifting frame 21) and the base 12, and moves the moving unit 20 up and down with respect to the base 12. As the moving unit 20 moves up and down, the lower support plate 16 moves up and down, and the distance between the lower support plate 16 and the upper support plate 14 can be adjusted.
  • the adjustment part 30 of this embodiment is comprised with the pantograph-type jack and is act
  • the motor of the adjustment unit operates under the control of the controller.
  • the detection unit 40 includes a sensor (for example, an AE sensor) that detects an elastic wave (for example, an AE (Acoustic Emission) wave) generated when a crack is formed in the glass sheet 2. It can be seen whether or not a crack is formed in the glass sheet 2 while being supported by the upper support plate 14 and the lower support plate 16. Cracks in the glass sheet 2 are formed starting from defects (scratches, deposits, inclusions, etc.) present in the glass sheet 2.
  • the detection unit 40 is attached to the lower support plate 16 that supports the glass sheet 2, but may be attached to the upper support plate 14.
  • the detection part 40 of this embodiment is comprised by the sensor which detects the elastic wave of the crack which arises in the glass sheet 2, it receives the light source which irradiates light to the glass sheet 2, and the reflected light from the glass sheet 2 And a light receiving element. Based on the amount of light received by the light receiving element, it can be determined whether or not a crack has occurred in the glass sheet 2. Moreover, you may investigate the presence or absence of a crack visually or with a microscope.
  • the support portion 50 is fixed to the base 12 and rotatably supports the upper support plate 14 via a connecting portion 52 such as a hinge.
  • the upper support plate 14 has a test position (first position) where the support surface 14a of the upper support plate 14 is parallel to the support surface 16a of the lower support plate 16, and the support surface 14a of the upper support plate 14 is lower. It is rotatable between a set position (second position) that is inclined with respect to the support surface 16 a of the side support board 16. While the upper support plate 14 rotates from the test position to the set position, the radius of curvature of the curved portion of the glass sheet 2 supported by the upper support plate 14 and the lower support plate 16 gradually increases.
  • a rotation stopper that stops the upper support board 14 at the set position may be attached to the support portion 50.
  • the support part 50 may function as a guide for guiding the elevating frame 21 up and down.
  • the mounting portion 60 is fixed to the base 12 and places the upper support plate 14 disposed above the lower support plate 16.
  • the upper support plate 14 is placed on the upper end surface of the placement unit 60 when it is in the test position (the position in FIG. 1).
  • the upper support plate 14 may be placed on a plurality of placement units 60 as shown in FIG. 2 so that the posture of the upper support plate 14 is stabilized.
  • Each mounting portion 60 is formed with a bolt hole for screwing the shaft portion 62 b of the bolt 62.
  • the upper support plate 14 is formed with a through hole through which the shaft portion 62b of the bolt 62 passes.
  • the upper support plate 14 is sandwiched between the head portion 62a of the bolt 62 and each mounting portion 60, and the posture of the upper support plate 14 can be stabilized.
  • the operator removes the bolt 62, rotates the upper support plate 14 from the test position (position shown in FIG. 1) to the set position (position shown in FIG. 3), and stops at the set position.
  • the worker supports the glass sheet 2 on the upper support plate 14 and the lower support plate 16, respectively.
  • the radius of curvature of the curved portion of the glass sheet 2 during setting is larger than the radius of curvature of the curved portion of the glass sheet 2 during testing. Since the tensile stress generated in the curved portion of the glass sheet 2 is minimized at the time of setting and is maximized at the time of testing, excessive tensile stress exceeding the set value is not generated in the glass sheet 2. At the time of setting, the tensile stress generated in the curved portion of the glass sheet 2 is sufficiently small, and cracks are hardly formed in the curved portion.
  • the operator rotates the upper support plate 14 from the set position to the test position and places it on the placement unit 60. While the upper support plate 14 is rotated from the set position to the test position, the detection unit 40 may monitor the presence or absence of an elastic wave generated when a crack is formed. Subsequently, the operator sandwiches the upper support plate 14 between the placing portion 60 and the head 62 a of the bolt 62. The posture of the upper support board 14 can be stabilized, and the support surface 14a of the upper support board 14 and the support surface 16a of the lower support board 16 can be maintained in parallel.
  • the operator manually operates the adjustment unit 30 to adjust the distance D between the support surface 14a of the upper support plate 14 and the support surface 16a of the lower support plate 16 which are parallel to each other, and the upper support plate.
  • a tensile stress of a set value is generated in the glass sheet 2 that is curved between the lower support plate 16 and the lower support plate 16.
  • the tensile stress ⁇ generated at the top end of the curved portion of the glass sheet 2 (the right end of the glass sheet 2 in FIG. 1) can be calculated based on the following formula (1).
  • ⁇ A ⁇ E ⁇ t / (D ⁇ t) (1)
  • A is a constant (1.198) specific to this test
  • E is the Young's modulus of the glass sheet 2
  • t is the thickness of the glass sheet 2.
  • the lower support board 16 in order to adjust the distance D, the lower support board 16 is moved up and down with respect to the base 12.
  • the lower support plate 16 is closer to the base 12 than the upper support plate 14 and is easily maintained in a posture parallel to the base 12. Therefore, the parallelism between the support surface 14a of the upper support plate 14 and the support surface 16a of the lower support plate 16 can be maintained satisfactorily.
  • the operator operates the moving unit 20 under the control of the controller, and moves the position of the lower support plate 16 with respect to the upper support plate 14 while maintaining the distance D.
  • the lower support plate 16 is moved in the left-right direction in the figure with respect to the base 12.
  • the lower support plate 16 is reciprocated a predetermined number of times.
  • the lower support board 16 may be reciprocated only once, may be moved leftward only once, or may be moved rightward only once. In any case, the generation position of the tensile stress ⁇ of the glass sheet 2 can be moved.
  • defects that are the starting points of cracks in the glass sheet 2 are scattered in the glass sheet 2.
  • the generation position of the tensile stress ⁇ of the glass sheet 2 can be moved and a large area test is possible, the durability of the glass sheet 2 is required with high accuracy.
  • the amount of movement of the lower support plate 16 in the predetermined direction with respect to the upper support plate 14 in a predetermined direction is preferably 100 mm or more, more preferably 200 mm or more, and even more preferably 300 mm or more.
  • the evaluation area of the glass sheet 2 is preferably 100 cm 2 or more, more preferably 300 cm 2 or more, and further preferably 900 cm 2 or more.
  • the “evaluation area” is a one-time movement area in the predetermined direction of the top end of the curved portion in the glass sheet 2 (the right end of the glass sheet 2 in FIG. 1). For example, when the relative movement direction of the lower support plate 16 with respect to the upper support plate 14 is perpendicular to the short side of the rectangular glass sheet 2, the “evaluation area” is the length of the short side of the glass sheet 2 and the above It is the product of the amount of movement.
  • Whether or not a crack is formed in the glass sheet 2 to be curved between the upper support plate 14 and the lower support plate 16 is detected by the detection unit 40 by detecting the presence or absence of an elastic wave generated when the crack is formed. It can be examined at. It can be confirmed whether or not a crack is formed in the glass sheet 2 while being supported by the upper support plate 14 and the lower support plate 16.
  • the operator operates the moving unit 20 under the control of the controller and moves the position of the lower support plate 16 with respect to the upper support plate 14 while maintaining the distance D, so that the upper support plate 14 and the lower support are supported. It is examined whether or not a crack is formed in the glass sheet 2 to be bent with the board 16.
  • the fracture strength of the glass sheet 2 can be determined by gradually decreasing the distance D and increasing the tensile stress ⁇ applied to the glass sheet 2 step by step until cracks are formed in the glass sheet 2.
  • the tensile stress ⁇ when the glass sheet 2 is broken is used as the fracture strength.
  • an anti-scattering film may be bonded to at least a part of the surface opposite to the evaluation surface of the glass sheet 2 (the surface where tensile stress is generated in the bending test). Since the fragments broken in the bending test do not scatter, the transition to the next measurement is accelerated, and analysis of the crack initiation point is also possible.
  • the interval D is narrowed stepwise for the purpose of examining the breaking strength of the glass sheet 2, but when confirming that the breaking strength of the glass sheet 2 is larger than a threshold value (for example, 50 MPa), the threshold value is set. What is necessary is just to test whether the crack was formed by performing the test by the space
  • a threshold value for example, 50 MPa
  • the glass sheet 2 is used as the sheet material including the brittle material, but the type of the sheet material is not particularly limited.
  • the brittle material include ceramics in addition to glass.
  • the sheet material may be a ceramic sheet. Glass sheets and ceramic sheets are collectively referred to as brittle sheets.
  • the sheet may be a composite sheet 6 as shown in FIG.
  • the composite sheet 6 includes a glass sheet 2 and a reinforcing layer 4 formed of a material containing a resin on the glass sheet 2.
  • the composite sheet 6 in FIG. 4 has a reinforcing layer 4 that is bonded to the glass sheet 2 on one side of the glass sheet 2, but has a reinforcing layer that is bonded to the glass sheet 2 on both sides of the glass sheet 2. Also good.
  • the two reinforcing layers disposed across the glass sheet 2 may have the same thickness or different thicknesses, and may have the same physical properties (Young's modulus, thermal expansion coefficient, etc.). It may have different physical properties.
  • the composite sheet of FIG. 4 includes a glass sheet as a brittle sheet, but may include a ceramic sheet.
  • the glass sheet 2 may have a surface treated with a surface treatment agent such as a silane coupling agent on the main surface 2 a bonded to the reinforcing layer 4 in the glass sheet 2.
  • a surface treatment agent such as a silane coupling agent on the main surface 2 a bonded to the reinforcing layer 4 in the glass sheet 2.
  • the change in the thickness of the glass sheet 2 due to the surface treatment is sufficiently small (for example, 10 nm or less) compared to the thickness of the glass sheet 2 before the surface treatment.
  • the reinforcing layer 4 has a binding force that does not peel from the glass sheet 2 when the composite sheet 6 is bent and deformed along a roll such as a winding core, and restricts the glass sheet 2 from being damaged.
  • the reinforcing layer 4 may be peeled off from the glass sheet 2 during the manufacturing process of the electronic device, and may not be a part of the electronic device.
  • the reinforcing layer 4 may cover a portion of the glass sheet 2 where the average breaking strength is desired to be increased, and covers at least a part of one main surface 2a of the glass sheet 2.
  • the reinforcing layer 4 preferably covers the entire main surface 2 a of the glass sheet 2.
  • the reinforcing layer 4 may protrude from one main surface 2a of the glass sheet 2.
  • the reinforcing layer 4 may be formed by applying a liquid resin composition on the glass sheet 2 and solidifying it, or may be formed by attaching a resin film to the glass sheet 2.
  • the reinforcing layer 4 may be composed of a resin film and an adhesive layer that bonds the resin film and the glass sheet.
  • the surface of the glass sheet for example, silane coupling treatment
  • the surface of the resin film for example, corona treatment
  • the change in the thickness of the resin film due to the surface treatment is sufficiently small (for example, 10 nm or less) compared to the thickness of the resin film before the surface treatment.
  • the reinforcing layer 4 is composed of one layer in FIG. 4, but may be composed of a plurality of layers made of different materials.
  • the surface of the reinforcing layer 4 opposite to the main surface coupled to the glass sheet 2 may be an exposed surface.
  • the reinforcing layer 4 may be formed of only resin, for example.
  • the reinforcement layer 4 should just be formed with the material containing resin, for example, may be formed with resin and a filler.
  • fillers include fibrous or non-fibrous fillers such as plate-like, scale-like, granular, indeterminate shapes, and crushed products.
  • glass fibers PAN-based and pitch-based carbon fibers
  • Stainless steel fiber metal fiber such as aluminum fiber and brass fiber, organic fiber such as aromatic polyamide fiber, gypsum fiber, ceramic fiber, asbestos fiber, zirconia fiber, alumina fiber, silica fiber, titanium oxide fiber, silicon carbide fiber, rock wool , Potassium titanate whisker, barium titanate whisker, aluminum borate whisker, silicon nitride whisker, mica, talc, kaolin, silica, calcium carbonate, glass beads, glass flake, glass microballoon, clay, molybdenum disulfide, wollastonite, oxidation Titanium, zinc oxide, poly Calcium phosphate, graphite, metal powders, metal flakes, metal ribbons, metal oxides, carbon powder, graphite, carbon flake, scaly carbon, and carbon nanotubes.
  • metal species of metal powder, metal flakes, and metal ribbons include silver, nickel, copper, zinc, aluminum, stainless steel, iron, brass, chromium, and tin.
  • the type of glass fiber or carbon fiber is not particularly limited as long as it is generally used for reinforcing a resin, and can be selected from long fiber type, short fiber type chopped strand, milled fiber, and the like.
  • the reinforcing layer 4 may be composed of a woven fabric, a nonwoven fabric or the like impregnated with a resin.
  • the resin of the reinforcing layer 4 may be various, for example, either a thermoplastic resin or a thermosetting resin.
  • a thermoplastic resin for example, polyimide (PI), epoxy (EP), or the like is used.
  • the thermoplastic resin include polyamide (PA), polyamideimide (PAI), polyetheretherketone (PEEK), polybenzimidazole (PBI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyethersal. Hong (PES), cyclic polyolefin (COP), polycarbonate (PC), polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), acrylic (PMMA), urethane (PU) and the like are used.
  • the resin film may be formed of a photocurable resin, and may be a copolymer or a mixture.
  • the manufacturing process of the electronic device by the roll-to-roll method may include a process involving heat treatment, and the heat-resistant temperature (continuous usable temperature) of the resin is preferably 100 ° C. or higher.
  • the resin having a heat resistant temperature of 100 ° C. or higher include polyimide (PI), epoxy (EP), polyamide (PA), polyamideimide (PAI), polyetheretherketone (PEEK), polybenzimidazole (PBI), and polyethylene terephthalate.
  • PET polyethylene naphthalate
  • PES polyethersulfone
  • COP cyclic polyolefin
  • PC polycarbonate
  • PVC polyvinyl chloride
  • PMMA acrylic
  • PU urethane
  • the average thickness of the reinforcing layer 4 is, for example, less than 100 ⁇ m. If the average thickness of the reinforcing layer 4 is less than 100 ⁇ m, the flexibility of the composite sheet 6 can be sufficiently secured. Moreover, if the average thickness of the reinforcement layer 4 is less than 100 micrometers, the curvature by the thermal expansion coefficient difference of resin and glass can be suppressed.
  • the average thickness of the reinforcing layer 4 is preferably 90 ⁇ m or less, more preferably 75 ⁇ m or less.
  • the average thickness of the reinforcing layer 4 is, for example, 0.5 ⁇ m or more. If the average thickness of the reinforcing layer 4 is 0.5 ⁇ m or more, it is possible to limit the opening of the glass sheet 2 due to the presence of the reinforcing layer 4.
  • the average thickness of the reinforcing layer 4 is preferably 1 ⁇ m or more, more preferably 2 ⁇ m or more.
  • the sheet material may be a brittle sheet with elements, an electronic device as a final product, or the like.
  • the brittle sheet with an element and the electronic device include at least a brittle sheet and may further include a reinforcing layer 4 shown in FIG.
  • Examples of the electronic device include an image display panel, a solar battery, a thin film secondary battery, an image sensor (CCD, CMOS, etc.), a pressure sensor, an acceleration sensor, and a biological sensor.
  • Examples of the image display panel include a liquid crystal panel (LCD), a plasma display panel (PDP), an organic EL panel (OLED), and electronic paper.
  • FIG. 5 is a view showing a liquid crystal panel according to an embodiment of the present invention.
  • the liquid crystal panel 70 includes a TFT substrate 72, a CF substrate 74, a liquid crystal layer 76, and the like.
  • the TFT substrate 72 is formed by patterning TFT elements (thin film transistors) 73 on the glass sheet 2.
  • the CF substrate 74 is formed by patterning a color filter element 75 on the glass sheet 2.
  • the TFT substrate 72 and the CF substrate 74 correspond to the brittle sheet with elements described in the claims.
  • FIG. 6 is a diagram showing an organic EL panel (OLED) according to an embodiment of the present invention.
  • the organic EL panel 80 includes, for example, the glass sheet 2, the transparent electrode 82, the organic layer 84, the reflective electrode 86, and the sealing plate 88.
  • the organic layer 84 includes at least a light emitting layer, and includes a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer as necessary.
  • the organic layer 84 includes a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer in this order from the anode side.
  • the transparent electrode 82, the organic layer 84, the reflective electrode 86, and the like constitute a bottom emission type organic EL element 81.
  • the organic EL element may be a top emission type.
  • FIG. 7 is a diagram showing a solar cell according to an embodiment of the present invention.
  • the solar cell 90 includes, for example, a glass sheet 2, a transparent electrode 92, a silicon layer 94, a reflective electrode 96, a sealing plate 98, and the like.
  • the silicon layer includes, for example, a p layer (p-type doped layer), an i layer (light absorption layer), an n layer (n-type doped layer), and the like from the anode side.
  • the transparent electrode 92, the silicon layer 94, the reflective electrode 96, and the like constitute a silicon type solar cell element 91.
  • the solar cell element may be a compound type, a dye sensitized type, a quantum dot type, or the like.
  • FIG. 8 is a view showing a thin film secondary battery according to an embodiment of the present invention.
  • the thin film secondary battery 100 includes, for example, a glass sheet 2, a transparent electrode 102, an electrolyte layer 104, a current collecting layer 106, a sealing layer 108, a sealing plate 109, and the like.
  • the thin-film secondary battery element 101 is configured by the transparent electrode 102, the electrolyte layer 104, the current collecting layer 106, the sealing layer 108, and the like.
  • the thin-film secondary battery element 101 of this embodiment is a lithium ion type, but may be a nickel hydrogen type, a polymer type, a ceramic electrolyte type, or the like.
  • FIG. 9 is a view showing electronic paper according to an embodiment of the present invention.
  • the electronic paper 110 includes, for example, a glass sheet 2, a TFT layer 112, a layer 114 containing an electrical engineering medium (for example, microcapsule), a transparent electrode 116, and a front plate 118.
  • the electronic paper element 111 is constituted by the TFT layer 112, the layer 114 of the electrical engineering medium, the transparent electrode 116, and the like.
  • the electronic paper element may be any of a microcapsule type, an in-plane type, a twist ball type, a particle movement type, an electronic jet type, and a polymer network type.
  • a thin film is formed on at least one side of the glass sheet 2.
  • the tensile stress ⁇ generated at the apex of the curved portion of the thin film forming surface of the glass sheet 2 can be calculated based on the following formula (2).
  • ⁇ A ⁇ E ⁇ t / (D′ ⁇ t) (2)
  • A is a constant (1.198) specific to this test
  • E is the Young's modulus of the glass sheet 2
  • t the thickness of the glass sheet 2
  • D ′ D ⁇ 2 ⁇ It is a value calculated from the equation “u”.
  • u represents the thickness of the thin film.
  • the distance between the upper end and the lower end of the glass sheet is shorter than the distance D by 2 ⁇ u.
  • the neutral surface is a surface in which neither a tensile stress nor a compressive stress is generated, and is a center plane in the thickness direction of the glass sheet 2 when no thin film is present.
  • the displacement amount of the neutral plane can be calculated using a general formula of material mechanics. The tensile stress ⁇ when the glass sheet 2 is broken is used as the fracture strength.
  • the manufacturing method of a sheet has a sheet manufacturing process for manufacturing a sheet, and a test process for bending the sheet manufactured in the sheet manufacturing process.
  • the sheet manufacturing process may be a general process.
  • the sheet manufacturing process may be any of a float method, a fusion method, and a redraw method.
  • a float process molten glass is flowed on molten tin in a bath and formed into a strip shape. After the formed glass is gradually cooled, the gradually cooled glass is cut into a desired size.
  • the fusion method the molten glass overflowing from the left and right sides of the bowl-shaped member is joined at the lower end of the bowl-shaped member to form a strip, and after the formed glass is slowly cooled, the gradually cooled glass is obtained as desired. Cut to size.
  • the redraw method the glass sheet is softened with heat and then stretched to a desired thickness, and the stretched glass sheet is solidified.
  • the test process may be performed using the bending test apparatus 10.
  • the test method has already been described.
  • a sheet having a breaking strength exceeding a predetermined value is determined as a non-defective product, and a sheet having a breaking strength equal to or lower than a predetermined value is determined as a defective product.
  • the glass sheet 2 is preferably such that no cracks are formed when the bending test is performed under the condition of the following formula (3) using the bending test apparatus 10 of FIG.
  • the following formula (3) is a modification of the above formula (1).
  • D (A ⁇ E ⁇ t / ⁇ ) + t (3)
  • D Distance between the support surface 14a of the upper support plate 14 and the support surface 16a of the lower support plate 16 (unit [mm])
  • A 1.198
  • E Young's modulus of glass sheet 2 (unit: [MPa])
  • t thickness of the glass sheet 2 (unit: [mm])
  • ⁇ 50 (unit [MPa]) That is, the glass sheet 2 may have a breaking strength greater than 50 MPa when a bending test is performed using the bending test apparatus 10 of FIG.
  • the glass sheet 2 having a fracture strength greater than 50 MPa hardly breaks when stored in a spiral shape around the core.
  • the ceramic sheet may also have a fracture strength greater than 50 MPa when a bending test is performed using the bending test apparatus 10 of FIG.
  • a rectangular glass sheet (long side 300 mm, short side 200 mm) was prepared as a brittle sheet.
  • the glass sheet was produced by the float process. Specifically, molten glass was flowed on molten tin to form a strip, and the molded glass was slowly cooled, and then the gradually cooled glass was cut into a desired size. In the slow cooling step and the cutting step, the glass was supported by compressed air pressure so that the glass did not come into contact with solid objects. In the cutting process, a laser cutting method which is a non-contact cutting method was used. The prepared glass sheet was subjected to a bending test using the bending test apparatus shown in FIG.
  • Example 5 a glass sheet prepared in the same manner as in Examples 1 to 4 was prepared as a brittle sheet, and the evaluation surface of the glass sheet was previously scratched with a sandpaper to a depth of about 10 ⁇ m. Thereafter, the prepared glass sheet was subjected to a bending test using the bending test apparatus shown in FIG. In the bending test, the composite sheet was bent so that a tensile stress was generated on the scratched surface of the glass sheet.
  • Table 1 shows the test conditions and test results of Examples 1 to 6.
  • T, E, D, and ⁇ in Table 1 have the same meaning as t, E, D, and ⁇ in Equation (1).
  • a strip-shaped glass sheet (long side 30 m, short side 300 mm, thickness 100 ⁇ m) prepared in the same manner as the glass sheet of Example 3 to Example 4 is spirally wound around a core having a diameter of 6 inches (diameter 152.4 mm). When stored for 30 days, no cracks occurred.
  • a belt-like glass sheet (long side 30 m, short side 300 mm, thickness 100 ⁇ m) similar to the glass sheet of Example 6 was spirally wound around a 6-inch diameter core (diameter 152.4 mm) and stored for 30 days. However, cracks occurred. The glass sheet was wound around the core so that a tensile stress was generated on the surface of the glass sheet having scratches.
  • the upper support plate 14 as the first support plate and the lower support plate 16 as the second support plate are arranged at intervals in the vertical direction.
  • the support plate and the second support plate may be disposed at an interval in the horizontal direction.
  • the one end part of the glass sheet 2 is fixed to the upper side support board 14 with a tape
  • the other end part of the glass sheet 2 is mounted in the lower side support board 16
  • FIG. 10 is a diagram showing a state when a sheet is set in a bending test apparatus according to a modification.
  • FIG. 11 is a view of the lower support plate of FIG. 10 as viewed from above.
  • one end portion of the glass sheet 2 is sandwiched between the belt-like upper fixing plate 122 and the upper support plate 14, and the upper fixing plate 122 and the upper support plate 14 are connected by the upper fixing bolt 124. It may be fastened and fixed.
  • the other end portion of the glass sheet 2 is sandwiched between the belt-like lower fixing plate 126 and the lower support plate 16, and the lower fixing plate 126 and the lower support plate 16 are connected by the lower fixing bolt 128. It may be fastened and fixed.
  • the lower support plate 16 may be formed with a long hole 16b through which the shaft portion 128b of the lower fixing bolt 128 is inserted.
  • the position of the lower fixing plate 126 relative to the lower support plate 16 can be adjusted by loosening the lower fixing bolt 128 and moving the lower fixing bolt 128 in the longitudinal direction of the long hole 16b. It can respond to the glass sheet 2 of various sizes.
  • the lower fixing plate 126 may be composed of a resin layer that is in contact with the glass sheet 2 and a metal main body.
  • the upper fixing bolt 124 may be configured not to protrude downward from the upper fixing plate 122.

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Abstract

La solution selon l'invention consiste en un procédé d'essai de flexion pour déterminer si des fissures se forment ou non dans un article en feuille contenant un matériau cassant soutenu par une première plaque d'appui et une seconde plaque d'appui lorsque, avec une séparation maintenue entre la surface d'appui de la première plaque d'appui et la surface d'appui de la seconde plaque d'appui, lesdites surfaces d'appui étant parallèles les unes aux autres, la seconde plaque d'appui est déplacée par rapport à la première plaque d'appui, faisant fléchir l'article en feuille entre elles.
PCT/JP2014/057160 2013-04-15 2014-03-17 Procédé d'essai de flexion, procédé de fabrication d'article en feuille, dispositif d'essai de flexion, feuille cassante, feuille cassante avec élément fixé à celle-ci, et dispositif électronique WO2014171247A1 (fr)

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JP2015512363A JP6387958B2 (ja) 2013-04-15 2014-03-17 曲げ試験方法、シート物の製造方法および曲げ試験装置
KR1020157024823A KR20150140647A (ko) 2013-04-15 2014-03-17 굽힘 시험 방법, 시트물의 제조 방법, 굽힘 시험 장치, 취성 시트, 소자 장착 취성 시트 및 전자 디바이스
CN201480015847.5A CN105143848B (zh) 2013-04-15 2014-03-17 片状件的制造方法、脆性片、带元件的脆性片以及电子器件

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EP3327422A1 (fr) * 2016-11-23 2018-05-30 Samsung Electronics Co., Ltd Dispositif d'évaluation des propriétés de flexion de matériau et procédé d'évaluation l'utilisant
JP2018200205A (ja) * 2017-05-26 2018-12-20 株式会社ディスコ チップの曲率を測定する方法及び測定する装置
CN109612847A (zh) * 2019-01-25 2019-04-12 安阳师范学院 纤维增强再生砖骨料混凝土弯曲性能试验装置及方法
JP2020041885A (ja) * 2018-09-10 2020-03-19 株式会社ディスコ チップ破壊ユニット、チップの強度の比較方法
JP2020051965A (ja) * 2018-09-28 2020-04-02 株式会社ディスコ 破壊試験装置、及び破片回収方法
WO2020085774A1 (fr) * 2018-10-23 2020-04-30 주식회사 제낙스 Procédé permettant d'évaluer la performance d'une batterie souple
WO2021177534A1 (fr) * 2020-03-04 2021-09-10 (주)플렉시고 Appareil d'enroulement et système d'évaluation pour évaluer la durabilité d'un matériau souple
KR20210116037A (ko) * 2020-03-17 2021-09-27 (주)플렉시고 플렉시블 소재의 내구성 평가용 슬라이딩장치 및 평가시스템
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WO2017062437A1 (fr) * 2015-10-06 2017-04-13 Corning Incorporated Appareil pliable, kits d'appareil pliable et procédés de personnalisation d'un appareil pliable
EP3327422A1 (fr) * 2016-11-23 2018-05-30 Samsung Electronics Co., Ltd Dispositif d'évaluation des propriétés de flexion de matériau et procédé d'évaluation l'utilisant
US10444131B2 (en) 2016-11-23 2019-10-15 Samsung Electronics Co., Ltd. Evaluating device of flexural property of material, and evaluation method using the same
JP2018200205A (ja) * 2017-05-26 2018-12-20 株式会社ディスコ チップの曲率を測定する方法及び測定する装置
JP2020041885A (ja) * 2018-09-10 2020-03-19 株式会社ディスコ チップ破壊ユニット、チップの強度の比較方法
JP7134566B2 (ja) 2018-09-10 2022-09-12 株式会社ディスコ チップ破壊ユニット、チップの強度の比較方法
JP7134567B2 (ja) 2018-09-28 2022-09-12 株式会社ディスコ 破壊試験装置、及び破片回収方法
JP2020051965A (ja) * 2018-09-28 2020-04-02 株式会社ディスコ 破壊試験装置、及び破片回収方法
WO2020085774A1 (fr) * 2018-10-23 2020-04-30 주식회사 제낙스 Procédé permettant d'évaluer la performance d'une batterie souple
CN109612847A (zh) * 2019-01-25 2019-04-12 安阳师范学院 纤维增强再生砖骨料混凝土弯曲性能试验装置及方法
CN109612847B (zh) * 2019-01-25 2024-01-26 安阳师范学院 纤维增强再生砖骨料混凝土弯曲性能试验装置及方法
WO2021177534A1 (fr) * 2020-03-04 2021-09-10 (주)플렉시고 Appareil d'enroulement et système d'évaluation pour évaluer la durabilité d'un matériau souple
KR102348743B1 (ko) 2020-03-17 2022-01-07 (주)플렉시고 플렉시블 소재의 내구성 평가용 슬라이딩장치 및 평가시스템
KR20210116037A (ko) * 2020-03-17 2021-09-27 (주)플렉시고 플렉시블 소재의 내구성 평가용 슬라이딩장치 및 평가시스템
KR102400742B1 (ko) * 2021-03-23 2022-05-23 주식회사 도우인시스 파손 시 파티클 제거장치가 갖추어진 utg 폴딩 내구성 평가 장치

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