WO2016084952A1 - 液晶ディスプレイパネル - Google Patents
液晶ディスプレイパネル Download PDFInfo
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- WO2016084952A1 WO2016084952A1 PCT/JP2015/083464 JP2015083464W WO2016084952A1 WO 2016084952 A1 WO2016084952 A1 WO 2016084952A1 JP 2015083464 W JP2015083464 W JP 2015083464W WO 2016084952 A1 WO2016084952 A1 WO 2016084952A1
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- liquid crystal
- crystal display
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- alkali
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3605—Coatings of the type glass/metal/inorganic compound
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3626—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer one layer at least containing a nitride, oxynitride, boronitride or carbonitride
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3636—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer one layer at least containing silicon, hydrogenated silicon or a silicide
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3649—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer made of metals other than silver
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3668—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties
- C03C17/3671—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties specially adapted for use as electrodes
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
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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
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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
- G02F1/133302—Rigid substrates, e.g. inorganic substrates
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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
- G02F1/1343—Electrodes
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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
- G02F1/133345—Insulating layers
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
- G02F1/136295—Materials; Compositions; Manufacture processes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/673—Thin-film transistors [TFT] characterised by the electrodes characterised by the shapes, relative sizes or dispositions of the gate electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/441—Interconnections, e.g. scanning lines
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
Definitions
- the present invention relates to a liquid crystal display panel. Specifically, the present invention relates to a liquid crystal display panel in which a pixel array is formed on a substrate made of a predetermined alkali-free glass.
- liquid crystal display panels are becoming larger and higher in definition, and suppression of pixel array pattern displacement due to heat treatment during the manufacturing process is one of the most important issues. Due to the demand for higher definition, the metal wiring of the semiconductor element array formed on the substrate is becoming thinner, so that the tolerance for pattern deviation is becoming smaller.
- the pattern shift is considered to be caused by thermal contraction due to the structural relaxation of the glass substrate in the liquid crystal display panel manufacturing process.
- the 1st method proposed in order to suppress this is to make the average coefficient of thermal expansion of glass small.
- alkali-free glass Patent Document 1 having an average coefficient of thermal expansion at 30 to 380 ° C. of 25 ⁇ 10 ⁇ 7 to 36 ⁇ 10 ⁇ 7 / ° C., average coefficient of thermal expansion at 50 to 300 ° C.
- Patent Document 2 having a temperature of 30 ⁇ 10 ⁇ 7 to 43 ⁇ 10 ⁇ 7 / ° C.
- a glass having an average thermal expansion coefficient close to that of a-Si, p-Si, or the like formed on a glass substrate has been proposed (Patent Document 3).
- Patent Document 1 proposes to set the strain point to 640 ° C. or higher
- Patent Document 2 proposes to set 710 ° C. or higher and lower than 725 ° C.
- Patent Document 3 proposes to set 680 ° C. or higher and lower than 740 ° C., respectively. .
- Patent Documents 1 and 2 Other proposals have been made to reduce the glass density (Patent Documents 1 and 2), increase the Young's modulus (Patent Document 3), and the like in order to suppress the bending of the glass.
- the pattern shift when the maximum temperature in the manufacturing process, such as heat treatment, is relatively low, about 200 to 450 ° C., due to the relaxation of the glass structure. In fact, when the average coefficient of thermal expansion of the substrate glass is lowered, the pattern shift may increase.
- an object of the present invention is to suppress pattern deviation of a large-sized liquid crystal display panel having a relatively low maximum temperature in the manufacturing process.
- the present invention is an active matrix driving type liquid crystal display panel,
- a film made of metal is formed on at least one surface of an alkali-free glass substrate, and the resulting metal film is patterned to form a wiring film, and then a gate insulating film made of an inorganic substance is formed.
- a liquid crystal display panel manufactured by a manufacturing process including a step of forming a film, wherein the wiring film made of the metal and the insulating film made of the inorganic substance are provided on at least one surface of the alkali-free glass substrate.
- the present invention is an active matrix drive type liquid crystal display panel
- the liquid crystal display panel comprises a wiring film in which a metal film made of metal is patterned on at least one surface of a non-alkali glass substrate, and a gate insulating film made of an inorganic substance.
- the wiring film has a thickness of 0.1 ⁇ m or more
- the insulating film has a thickness of 100 nm or more
- the substrate has a long side of 1800 mm or more, a short side of 1500 mm or more, and a thickness of 0.5 mm or less.
- the metal has a product of Young's modulus and thermal expansion coefficient at room temperature of 10,000 ⁇ 10 ⁇ 7 GPa / ° C.
- the inorganic substance has an average coefficient of thermal expansion (50 ° C. to 350 ° C.) smaller than the alkali-free glass,
- the alkali-free glass has a Young's modulus (E) of 70 to 95 GPa, an average coefficient of thermal expansion (50 ° C.
- the present inventors have found that, in a large-sized liquid crystal display panel in which the maximum temperature of heat treatment in the manufacturing process is relatively low (for example, 450 ° C. or less), the influence of the combination of wiring film metal and insulating film derivative and substrate glass is affected. I found that it cannot be ignored.
- the maximum temperature of the heat treatment in the manufacturing process is relatively low, it is considered that the warpage of the glass substrate is a major factor causing pattern deviation rather than the structural relaxation conventionally considered.
- the pattern deviation is remarkably suppressed by combining the glass constituting the substrate, the metal constituting the wiring, the dielectric constituting the insulating film, and the design form of the display panel with a predetermined combination. Has been.
- FIG. 1 (a) to 1 (c) are diagrams showing a deformation state of the glass substrate in Example 1, FIG. 1 (a) is Step 1, FIG. 1 (b) is Step 2, and FIG. 1 (c) is Step.
- FIG. FIG. 2 simulates the warpage of a substrate when the glass prepared in the example is used as a substrate and a copper pattern with a predetermined thickness and a silicon nitride film with a predetermined thickness covering the copper pattern are formed thereon. Is a graph plotted.
- alkali-free glass means glass that does not substantially contain alkali metal oxides such as Na 2 O and K 2 O.
- substantially does not contain means that it is not contained except for inevitable impurities (hereinafter the same).
- the alkali metal inevitably contained is at most about 0.1 mol%.
- the alkali-free glass contains a predetermined amount of an alkaline earth metal oxide and the like in addition to SiO 2 and Al 2 O 3 forming the skeleton of the glass.
- an alkaline earth metal oxide and the like in addition to SiO 2 and Al 2 O 3 forming the skeleton of the glass.
- the content of SiO 2 is 66% or more, preferably 66.5% or more.
- the content of SiO 2 is 74% or less, preferably 73% or less, more preferably 72% or less, and even more preferably 71% or less.
- Al 2 O 3 has the effects of suppressing phase separation, improving the strain point, and increasing the Young's modulus. However, if the content is less than 10%, it is difficult to obtain these effects sufficiently. Therefore, the content of Al 2 O 3 is 10% or more, preferably 11% or more, more preferably 12% or more. On the other hand, when the content exceeds 15%, T 2 increases, the solubility becomes poor, and the devitrification temperature tends to increase. Therefore, the content of Al 2 O 3 is 15% or less, preferably 14% or less, and more preferably 13% or less.
- B 2 O 3 is an essential component that has the effect of improving the solubility of the glass and lowering the devitrification temperature, but if its amount exceeds 5%, the Young's modulus is excessively reduced and the thermal expansion coefficient is low. It tends to be too low. Therefore, the content of B 2 O 3 is 5% or less, preferably 4% or less, more preferably less than 3%, more preferably 2.7% or less, further preferably 2.5% or less, more More preferably, it is 2.0% or less, and particularly preferably 1.5% or less. On the other hand, if the content is less than 0.1%, the solubility deteriorates and it becomes difficult to obtain a homogeneous glass. Therefore, the content of B 2 O 3 is 0.1% or more, preferably 0.2% or more, more preferably 0.3% or more, and further preferably 0.5% or more.
- MgO has the effect of improving the solubility and reducing the specific gravity without excessively increasing the thermal expansion coefficient and without greatly reducing the strain point, but the content is less than 2%. The effect cannot be obtained sufficiently. Therefore, the content of MgO is 2% or more, preferably 3% or more, more preferably 4% or more. On the other hand, when the content exceeds 12%, the devitrification temperature increases. Therefore, the content of MgO is 12% or less, preferably 10% or less, more preferably 9.5% or less, and further preferably 9% or less.
- CaO also has the effect of improving the solubility, increasing the Young's modulus, and lowering the devitrification temperature without increasing the thermal expansion coefficient too much and without greatly reducing the strain point. If it is less than 3%, the effect cannot be sufficiently obtained.
- the content of CaO is 3% or more, preferably 4% or more, more preferably 5% or more. On the other hand, if the content exceeds 11%, the devitrification temperature becomes high, and the amount of phosphorus that is an impurity in limestone (CaCO 3 ) that is a raw material of CaO may increase. Therefore, the CaO content is 11% or less, preferably 10% or less, more preferably 9% or less, and even more preferably 8% or less.
- SrO is not an essential component, it has the effect of improving solubility without increasing the devitrification temperature, and the content of SrO is preferably 0.1 for obtaining an effect of relatively increasing the coefficient of thermal expansion. % Or more, more preferably 1% or more, and further preferably 2% or more. On the other hand, if the content exceeds 10%, the specific gravity and the thermal expansion coefficient tend to be too high. Therefore, the SrO content is 10% or less, preferably 8% or less, more preferably 7% or less, and even more preferably 6% or less.
- BaO is not an essential component, it has an effect of improving solubility and devitrification resistance, so it may be contained at 5% or less. However, when the amount is exceeded, the density tends to increase. It is preferably 4.5% or less, more preferably 4% or less, further preferably 1% or less, particularly preferably 0.5% or less, and most preferably not substantially contained.
- ZrO 2 is not an essential component, it has the effects of lowering the melting temperature and promoting crystal precipitation during firing, so it may be contained at 2% or less. If the amount exceeds this amount, the devitrification resistance of the glass tends to decrease, and the relative dielectric constant ( ⁇ ) tends to increase. Preferably, it is 1.5% or less, more preferably 1% or less, still more preferably 0.5% or less, and most preferably not substantially contained.
- the total amount (mol%) of the alkaline earth metal oxides that is, MgO, CaO, SrO and BaO is less than 15%, the Young's modulus is low and the solubility is low. Tend to get worse. Therefore, the total is preferably 15% or more, more preferably 16% or more, and further preferably 17% or more. On the other hand, if the total exceeds 21%, the thermal expansion coefficient tends to be too large. Preferably it is 20% or less, More preferably, it is 19% or less, and 18% or less is still more preferable.
- the content satisfies the following three conditions between MgO and another alkaline earth metal.
- the strain point can be increased, and the temperature T 4 at which the viscosity of the glass, particularly the glass viscosity becomes 10 4 dPa ⁇ s, can be lowered.
- MgO / (MgO + CaO + SrO + BaO) is preferably 0.20 or more, more preferably 0.25 or more, further preferably 0.3 or more, particularly preferably 0.4 or more, and most preferably 0.45 or more.
- MgO / (MgO + CaO) is 0.3 or more, more preferably 0.4 or more, further preferably 0.52 or more, particularly preferably 0.55 or more, and most preferably 0.6 or more.
- MgO / (MgO + SrO) is 0.6 or more, more preferably 0.63 or more, and further preferably 0.65 or more.
- Al 2 O 3 ⁇ (MgO / (MgO + CaO + SrO + BaO)) is preferably 5.5 or more. If the ratio is less than 5.5, the Young's modulus tends to be low. More preferably, it is 5.75 or more, more preferably 6 or more, and most preferably 6.25 or more.
- the alkali-free glass of the present invention has a relationship of each component, specifically, a composition represented by mol% on the basis of oxide, 759-13.1 ⁇ SiO 2 ⁇ 7.5 ⁇ Al 2 O 3 ⁇ 15. .5 ⁇ B 2 O 3 + 9.7 ⁇ MgO + 21.8 ⁇ CaO + 27.2 ⁇ SrO + 27.9 ⁇ BaO ⁇ 0 makes the range of the thermal expansion coefficient and Young's modulus suitable for suppressing warpage. I found out.
- the glass has an effect of improving its solubility, clarity, moldability, etc., and ZnO, Fe 2 O 3 , SO 3 , F, Cl, SnO 2 in a total amount of 2% or less,
- the content may be preferably 1% or less, more preferably 0.5% or less.
- the glass does not substantially contain P 2 O 5 in order not to cause deterioration of properties of a thin film such as a metal or an oxide provided on the glass plate surface. Further, in order to facilitate recycling of the glass, it is preferable that PbO, As 2 O 3 , and Sb 2 O 3 are not substantially contained.
- the glass has an average coefficient of thermal expansion ( ⁇ ) at 50 to 350 ° C. of 45 ⁇ 10 ⁇ 7 / ° C. or less. Thereby, the thermal shock resistance is large, and the productivity at the time of panel manufacture can be increased. It is preferably 42 ⁇ 10 ⁇ 7 / ° C. or less, more preferably 41 ⁇ 10 ⁇ 7 / ° C. or less, and further preferably 40 ⁇ 10 ⁇ 7 / ° C. or less. On the other hand, if ⁇ is too small, warpage during film formation increases, and therefore, it is at least 32 ⁇ 10 ⁇ 7 / ° C. 33 ⁇ 10 ⁇ 7 / ° C. or higher is preferable, and 35 ⁇ 10 ⁇ 7 / ° C. or higher is more preferable.
- the glass has a Young's modulus (E) of 70 GPa or more. Due to such a high Young's modulus, the fracture toughness of the glass is high and it is suitable for a large display substrate. Preferably it is 75 GPa or more, More preferably, it is 78 GPa or more, More preferably, it is 80 GPa or more, Most preferably, it is 83 GPa or more. On the other hand, if the Young's modulus is too high, the cutting property of the glass deteriorates, so it is 95 GPa or less. Preferably it is 90 GPa or less, More preferably, it is 88 GPa or less.
- E Young's modulus
- ⁇ and E satisfy the following formula (1). 20 ⁇ + 7E ⁇ 1310 (1)
- the unit of ⁇ is 10 ⁇ 7 / ° C.
- the unit of E is GPa.
- the glass has a temperature T 2 at which the viscosity ⁇ becomes 10 2 poise (dPa ⁇ s) of 1710 ° C. or less, and is relatively easy to melt. More preferably, it is less than 1710 degreeC, More preferably, it is 1700 degrees C or less, More preferably, it is 1690 degrees C or less.
- the glass has a temperature T 4 at which the viscosity ⁇ becomes 10 4 poise is 1320 ° C. or less, and is suitable for float forming. More preferably, it is 1315 degrees C or less, More preferably, it is 1310 degrees C or less, More preferably, it is 1305 degrees C or less.
- the glass has a strain point of 680 ° C. or higher, more preferably 710 ° C. or higher, and further preferably 730 ° C. or higher.
- the glass has a glass transition point of 760 ° C. or higher, more preferably 770 ° C. or higher, and further preferably 780 ° C. or higher for the same reason as the strain point.
- the glass has a specific gravity of 2.65 or less, more preferably 2.64 or less, and even more preferably 2.62 or less.
- the glass has a devitrification temperature of 1350 ° C. or lower, which makes it easier to form by the float process. More preferably, it is 1340 degrees C or less, More preferably, it is 1330 degrees C or less.
- the devitrification temperature in the present invention is such that the crushed glass particles are put in a platinum dish, subjected to heat treatment for 17 hours in an electric furnace controlled at a constant temperature, and the glass surface and the inside are observed by optical microscope observation after the heat treatment. The temperature at which crystals precipitate.
- the glass has a photoelastic constant of 31 nm / MPa / cm or less. Due to the birefringence of the glass substrate due to stress generated during the manufacturing process of the liquid crystal display panel and the liquid crystal display device, a phenomenon in which the black display becomes gray and the contrast of the liquid crystal display decreases may be observed. This phenomenon can be suppressed by setting the photoelastic constant to 31 nm / MPa / cm or less.
- the glass has a photoelastic constant of preferably 23 nm / MPa / cm or more, more preferably 25 nm / MPa / cm or more, considering the ease of securing other physical properties.
- the photoelastic constant can be measured by a disk compression method.
- the glass has a relative dielectric constant of 5.6 or more.
- the sensing sensitivity of the touch sensor is improved, the driving voltage is reduced, From the viewpoint of power saving, it is better that the glass substrate has a higher relative dielectric constant.
- the relative dielectric constant is 5.6 or more, the sensing sensitivity of the touch sensor is improved. More preferably, it is 5.8 or more, More preferably, it is 6.0 or more.
- the relative dielectric constant can be measured by the method described in JIS C-2141.
- the liquid crystal display panel of the present invention is an active matrix drive type panel having a switching element such as a TFT on the substrate made of the alkali-free glass.
- the substrate has a long side of 1800 mm or more and a short side of 1500 mm or more.
- the long side is 2100 mm or more and the short side is 1800 mm or more. More preferably, the long side is 2400 mm or more and the short side is 2100 mm or more.
- the substrate has a thickness of 0.5 mm or less, preferably 0.4 mm or less, and more preferably 0.3 mm or less.
- a long side is 3200 mm or less
- a short side is 2900 mm or less
- board thickness is 0.05 mm or more.
- a wiring film made of metal and an insulating film made of an inorganic material are provided on at least one surface of the substrate.
- the present invention suppresses the pattern shift from the viewpoint of the combination of the various characteristics of these films and alkali-free glass.
- the wiring film constitutes a circuit pattern including a gate electrode, a gate bus line, an auxiliary capacitance wiring, an auxiliary capacitance electrode, and the like.
- the wiring film has a thickness of 0.1 ⁇ m or more.
- the upper limit of the thickness is not particularly limited, but is practically about 0.3 to 0.6 ⁇ m.
- the gate bus line can be formed as a thin line having a width of about 4 to 10 ⁇ m.
- the metal has a product of Young's modulus and thermal expansion coefficient at room temperature of 10,000 ⁇ 10 ⁇ 7 GPa / ° C. to 25,000 ⁇ 10 ⁇ 7 GPa / ° C., preferably 10,000 ⁇ 10 ⁇ 7 GPa / ° C. C. to 24,000 ⁇ 10 ⁇ 7 GPa / ° C., more preferably 10,000 ⁇ 10 ⁇ 7 GPa / ° C. to 22,000 ⁇ 10 ⁇ 7 GPa / ° C.
- the warp of the glass substrate tends to increase after the wiring film is formed.
- the metal examples include copper, aluminum, molybdenum, titanium, chromium, tantalum, tungsten, and alloys thereof.
- the gate electrode may have a structure in which these metals are stacked.
- copper, aluminum, molybdenum or an alloy thereof is used, and more preferably, copper, aluminum, or molybdenum is used.
- the product of Young's modulus and thermal expansion coefficient at room temperature is as follows. Copper: 21,000-23,000 ⁇ 10 ⁇ 7 GPa / ° C. Aluminum: 16,000-17,000 ⁇ 10 ⁇ 7 GPa / ° C. Molybdenum: 15,000 to 17,000 ⁇ 10 ⁇ 7 GPa / ° C.
- the substrate includes an insulating film made of an inorganic material that covers the circuit pattern.
- the insulating film has a thickness of 100 nm or more. The upper limit of the thickness is not particularly limited, but is actually about 300 to 400 nm.
- the inorganic substance has an average thermal expansion coefficient ( ⁇ ) of the alkali-free glass, that is, 32 ⁇ 10 ⁇ 7 to 45 ⁇ 10 ⁇ 7 / ° C., and a smaller average thermal expansion coefficient (50 to 350 ° C.).
- ⁇ average thermal expansion coefficient
- examples of such an inorganic substance include silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, aluminum nitride, aluminum oxynitride, and the like, and these may be a single layer or a stacked structure.
- silicon nitride, silicon oxide, or silicon oxynitride is used.
- Silicon nitride 32 ⁇ 10 ⁇ 7 / ° C
- Silicon oxide 5.5 ⁇ 10 ⁇ 7 / ° C.
- thermal expansion coefficient of silicon oxynitride takes the above intermediate numerical value depending on the oxygen-nitrogen ratio.
- the film stress changes by controlling the film forming conditions, and it is possible to appropriately reduce the warpage of the glass substrate by changing the film stress.
- a metal film for a gate electrode the applied output at the time of film formation becomes too large, and the possibility of abnormal discharge increases.
- a gate insulating film hydrogenation or the like can be used, but a transistor having desired characteristics may not be obtained. Therefore, when there are restrictions on the film forming conditions or when it is desired to further suppress the warpage, the warp can be effectively suppressed by applying the predetermined glass substrate of the present invention.
- the metal wiring film becomes thin, so that the metal wiring film becomes thick to maintain the resistance value.
- a circuit pattern of a metal wiring film is formed on the glass substrate, and an insulating film is formed on almost the entire surface of the glass substrate so as to cover and cover the wiring.
- the glass substrate, the metal wiring film, and the insulating film were integrated during the heat treatment in the manufacturing process.
- warping occurred in the state.
- the circuit pattern of the metal wiring film is biased mainly in the vertical direction or the horizontal direction, the warp tends to be remarkable.
- a pattern shift from the initial design position of the wiring or element is likely to occur.
- a TFT active layer, a passivation film, a planarizing film, and the like are provided on the insulating film to form a TFT substrate.
- the TFT substrate can be manufactured by a known manufacturing process.
- the maximum temperature of the manufacturing process is preferably 450 ° C. or less.
- the maximum temperature is usually the maximum temperature in the TFT active layer formation process.
- the maximum temperature may be more preferably 400 ° C. or lower, more preferably 370 ° C. or lower, and still more preferably 350 ° C. or lower, depending on the type of semiconductor applied and the process. In consideration of the stability of the manufacturing process and TFT performance, it is preferably 200 ° C. or higher, more preferably 250 ° C. or higher, and further preferably 300 ° C.
- the TFT may be a bottom gate type (reverse stagger type) or a top gate type (stagger type).
- a metal film is formed at the initial stage of the TFT manufacturing process. Inverse stagger type, which often takes a process of forming an insulating film, is preferable.
- a known material may be used for the passivation film, the planarization film, and the like.
- the liquid crystal display panel of the present invention is an active matrix drive type liquid crystal display panel, and the liquid crystal display panel is made of, for example, an oxide semiconductor such as amorphous silicon (a-Si) or indium-gallium-zinc.
- a-Si amorphous silicon
- the liquid crystal display panel according to the present invention amorphous silicon (a-Si), indium-gallium-zinc oxide semiconductor, etc.
- the maximum temperature of the manufacturing process of the liquid crystal display panel used is a low-temperature heat treatment temperature, for example, 450 ° C. or less.
- a wiring film made of the metal and an insulating film made of the inorganic material are provided on at least one surface of the alkali-free glass substrate.
- the TFT substrate is combined with a color filter substrate, liquid crystal molecules, a sealing material, a polarizing plate, a light guide plate, various optical films, a backlight and the like to form a liquid crystal display panel.
- the size of the display is appropriately selected depending on the application. For example, a mobile display panel having a diagonal length of about 3 to 10 inches, a 4K television display having a diagonal length of 30 to 70 inches, and the like.
- those having 30 inches or more are preferably 100 pixels per inch (hereinafter referred to as ppi) or more, more preferably 150 ppi or more, and further preferably 200 ppi or more.
- ppi pixels per inch
- 400 ppi or more is more preferable
- 500 ppi or more is more preferable.
- the raw materials of each component were prepared so that the glass composition became the target glass composition (unit: mol%) shown in Table 1, and melted at a temperature of 1500 to 1600 ° C. using a platinum crucible. In melting, the mixture was stirred using a platinum stirrer to homogenize the glass. Next, the molten glass was poured out, formed into a plate shape, and then slowly cooled. Various evaluation was performed using this glass plate.
- Table 1 Examples 1 to 4 and 7 to 12 are glasses as examples of the present invention, and Examples 5 to 6 are glasses as examples for comparison. Parentheses indicate calculated values.
- Table 1 shows the glass composition (unit: mol%), the average thermal expansion coefficient (unit: ⁇ 10 -7 / ° C) at 50 to 300 ° C, the strain point (unit: ° C), the glass transition point (unit: ° C), Specific gravity (unit: g / cm 3 ), Young's modulus (GPa) (measured by ultrasonic method), high-temperature viscosity value, temperature T 2 that is a measure of solubility (temperature at which glass viscosity ⁇ is 10 2 dPa ⁇ s) , Unit: ° C), and temperature T 4 (temperature at which glass viscosity ⁇ becomes 10 4 dPa ⁇ s, unit: ° C), devitrification temperature (unit: ° C), light
- An elastic constant (unit: nm / MPa / cm) (measured by a disk compression method) and a relative dielectric constant (measured by the method described in JIS C-2141) are shown.
- the deformation of the glass substrate was calculated using the finite element method.
- the calculation was performed according to the following procedure using MARC of MSC as calculation software.
- Step 1 the glass of Example 1 was used as a substrate having a substrate size G6 (long side 1800 mm, short side 1500 mm) and thickness 0.5 mm, and a copper film having a thickness of 200 nm was coated thereon at 200 ° C. Then, the substrate deformation when cooled to room temperature (20 ° C.) was calculated.
- step 2 in order to simulate patterning with a width of 7 ⁇ m and a pitch of 70 ⁇ m, an anisotropy such that the Young's modulus in the end axis direction becomes 1/10 with respect to the major axis direction of the substrate at room temperature. Substrate deformation when applied to a copper film was calculated. Further, as step 3, the substrate that has been rendered anisotropic in step 2 is heated to 200 ° C., the silicon nitride film is coated with a film thickness of 200 nm, and the substrate is deformed when cooled to room temperature (20 ° C.). Calculated.
- FIGS. 1 (a) to 1 (c) show the calculated results as a contour diagram for the glass substrate of Example 1 (Young's modulus 84 GPa, thermal expansion coefficient 39 ⁇ 10 ⁇ 7 / ° C.).
- Step 1 FIGS. 1 (a) to 1 (c)
- Step 1 (a) the film is a concentric deformation because of an isotropic film, but in Step 2 (FIG. 1 (b)), a saddle-shaped deformation is observed due to the anisotropy of the copper film. It was. Furthermore, it was found that the deformation was reduced in Step 3 (FIG. 1C) compared to Step 2.
- the glass of Examples 1 to 12 was used as a glass substrate having a substrate size G6 (long side 1800 mm, short side 1500 mm) and thickness 0.5 mm, and a film thickness of 200 nm, width 7 ⁇ m, and pitch 70 ⁇ m.
- a silicon nitride film having a thickness of 200 nm is formed on the entire surface of the glass substrate so as to cover the copper pattern parallel to one direction
- the maximum value of the warp of the substrate after the silicon nitride film is formed is It is calculated and plotted by the above method. In the figure, the warpage is smaller at the upper right and the warpage is larger at the lower left.
- the upper right portion of the straight line is a portion corresponding to 20 ⁇ + 7E ⁇ 1300.
- the glasses of Examples 1 to 4 and 7 to 12 that satisfy the requirements of the present invention are less warped and hardly cause pattern displacement.
- Examples 5 and 6 that do not satisfy the glass composition and the formula (1) it is considered that the warpage is large and the pattern deviation becomes large.
- pattern deviation is remarkably suppressed by a predetermined combination of substrate glass, wiring metal, dielectric, and display panel design.
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Abstract
Description
該液晶ディスプレイパネルは、無アルカリガラスの基板の少なくとも一の表面上に、金属からなる膜を成膜し、得られる金属膜をパターニングして配線膜とし、次いで無機物質からなるゲート絶縁膜を成膜する工程を含む製造プロセスで製造される液晶ディスプレイパネルであって、前記無アルカリガラスの基板の少なくとも一の表面上には、前記金属からなる配線膜と前記無機物質からなる絶縁膜とが備えられて成り、
即ち本発明は、アクティブマトリックス駆動形式の液晶ディスプレイパネルであって、
該液晶ディスプレイパネルは、無アルカリガラスの基板の少なくとも一の表面上に、金属からなる金属膜がパターニングされた配線膜と、無機物質からなるゲート絶縁膜とが備えられて成り、
該配線膜は、厚さが0.1μm以上であり、
該絶縁膜は、厚さが100nm以上であり、
該基板は長辺1800mm以上、短辺1500mm以上、厚さ0.5mm以下であり、
該金属は、その室温でのヤング率と熱膨張係数の積が10,000×10-7GPa/℃~25,000×10-7GPa/℃であり、
該無機物質は、該無アルカリガラスより小さい平均熱膨張係数(50℃~350℃)を有し、
該無アルカリガラスは、ヤング率(E)が70~95GPa、平均熱膨張係数(50℃~350℃)αが32×10-7~45×10-7(1/℃)、且つ下記式(1)を満たし、
20α+7E≧1310 (1)
及び、
酸化物基準のモル%表示で下記組成を有する、
SiO2 66~74、
Al2O3 10~15、
B2O3 0.1~5、
MgO 2~12、
CaO 3~11、
SrO 0~10、
BaO 0~5、
ZrO2 0~2、
好ましくは、酸化物基準のモル%表示で下記組成を有する、
SiO2 66~74、
Al2O3 10~15、
B2O3 0.1~3.0未満、
MgO 2~10、
CaO 3~11、
SrO 0.1~10、
BaO 0~5、
ZrO2 0~2、
液晶ディスプレイパネルである。
MgO/(MgO+CaO+SrO+BaO)が0.20以上であることが好ましく、0.25以上がより好ましく、0.3以上がさらに好ましく、0.4以上が特に好ましく、0.45以上が最も好ましい。
MgO/(MgO+CaO)が0.3以上であり、0.4以上がより好ましく、0.52以上がさらに好ましく、0.55以上が特に好ましく、0.6以上が最も好ましい。
MgO/(MgO+SrO)が0.6以上であり、0.63以上がより好ましく、0.65以上がさらに好ましい。
該ガラスは、50~350℃での平均熱膨張係数(α)が45×10-7/℃以下である。これにより、耐熱衝撃性が大きく、パネル製造時の生産性を高くすることができる。好ましくは42×10-7/℃以下であり、より好ましくは41×10-7/℃以下、さらに好ましくは40×10-7/℃以下である。一方、αが小さすぎると成膜時の反りが大きくなるため、32×10-7/℃以上である。33×10-7/℃以上が好ましく、35×10-7/℃以上がより好ましい。
20α+7E≧1310 (1)
ここで、αの単位は10-7/℃、Eの単位はGPaである。上記式(1)を満たす場合、大型基板であっても加熱による反りが小さい。
好ましくは、該ガラスは、上記歪点と同様の理由で、ガラス転移点が760℃以上であり、より好ましくは770℃以上であり、さらに好ましくは780℃以上である。
銅: 21,000~23,000×10-7GPa/℃
アルミニウム: 16,000~17,000×10-7GPa/℃
モリブデン: 15,000~17,000×10-7GPa/℃
窒化シリコン: 32×10-7/℃
酸化シリコン: 5.5×10-7/℃
なお、酸窒化シリコンの熱膨張率は、酸素窒素比により上記の中間の数値を取ると考えられる。
即ち、本発明の液晶ディスプレイパネルは、アクティブマトリクス駆動形式の液晶ディスプレイパネルであって、該液晶ディスプレイパネルは、例えば非晶質シリコン(a-Si)やインジウム-ガリウム-亜鉛の酸化物半導体等のような、無アルカリガラスの基板の少なくとも一の表面上に、金属からなる膜を成膜して該金属膜をパターニングして配線膜とし、さらに無機物質からなるゲート絶縁膜を成膜する工程を含む製造プロセスで製造される液晶ディスプレイパネルである。即ち、LTPSのような高温熱処理される製造プロセスとは異なるものであり、本発明における液晶ディスプレイパネル(非晶質シリコン(a-Si)やインジウム-ガリウム-亜鉛系の酸化物半導体等をTFTとして用いた液晶ディスプレイパネル)の前記製造プロセスの最高温度は低温熱処理の温度、例えば450℃以下である。前記無アルカリガラスの基板の少なくとも一の表面上には、前記金属からなる配線膜と前記無機物質からなる絶縁膜とが備えられて成る。
図1(a)~図1(c)に、例1のガラス(ヤング率84GPa、熱膨張率が39×10-7/℃)の基板に対して、計算した結果をコンター図として示す。ステップ1(図1(a))では、当方的な膜のため同心円状の変形であるが、ステップ2(図1(b))では銅膜の異方性により、鞍型の変形が見られた。さらに、ステップ3(図1(c))では、ステップ2と比較して、変形が軽減されていることがわかった。
Claims (6)
- アクティブマトリクス駆動形式の液晶ディスプレイパネルであって、
該液晶ディスプレイパネルは、無アルカリガラスの基板の少なくとも一の表面上に、金属からなる膜を成膜し、得られる金属膜をパターニングして配線膜とし、次いで無機物質からなるゲート絶縁膜を成膜する工程を含む製造プロセスで製造される液晶ディスプレイパネルであって、前記無アルカリガラスの基板の少なくとも一の表面上には、前記金属からなる配線膜と前記無機物質からなる絶縁膜とが備えられて成り、
該配線膜は、厚さが0.1μm以上であり、
該絶縁膜は、厚さが100nm以上であり、
該基板は長辺1800mm以上、短辺1500mm以上、厚さ0.5mm以下であり、
該金属は、その室温でのヤング率と熱膨張係数の積が10,000×10-7GPa/℃~25,000×10-7GPa/℃であり、
該無機物質は、該無アルカリガラスより小さい平均熱膨張係数(50℃~350℃)を有し、
該無アルカリガラスは、ヤング率(E)が70~95GPa、平均熱膨張係数(50℃~350℃)αが32×10-7~45×10-7(1/℃)、且つ下記式(1)を満たし、
20α+7E≧1310 (1)
及び、
酸化物基準のモル%表示で下記組成を有する、
SiO2 66~74、
Al2O3 10~15、
B2O3 0.1~5、
MgO 2~12、
CaO 3~11、
SrO 0~10、
BaO 0~5、
ZrO2 0~2、
液晶ディスプレイパネル。 - 前記無アルカリガラスは、酸化物基準のモル%表示で表される組成が、759-13.1×SiO2-7.5×Al2O3-15.5×B2O3+9.7×MgO+21.8×CaO+27.2×SrO+27.9×BaO≧0の関係を満たす請求項1に記載の液晶ディスプレイパネル。
- 該金属が、銅、アルミニウム、又はモリブデンである、請求項1または2に記載の液晶ディスプレイパネル。
- 該無機物質が窒化シリコン、酸窒化シリコン又は酸化シリコンである、請求項1~3のいずれかに記載の液晶ディスプレイパネル。
- 前記液晶ディスプレイパネルの製造プロセスの最高温度が450℃以下である、請求項1~4のいずれかに記載の液晶ディスプレイパネル。
- 請求項1~5のいずれかに記載の液晶ディスプレイパネルに使用される、無アルカリガラスの基板。
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020177014083A KR20170086529A (ko) | 2014-11-28 | 2015-11-27 | 액정 디스플레이 패널 |
| KR1020237035340A KR102714914B1 (ko) | 2014-11-28 | 2015-11-27 | 액정 디스플레이 패널 |
| JP2016561965A JPWO2016084952A1 (ja) | 2014-11-28 | 2015-11-27 | 液晶ディスプレイパネル |
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| CN201580064686.3A CN107003553B (zh) | 2014-11-28 | 2015-11-27 | 液晶显示面板 |
| US15/605,235 US10386686B2 (en) | 2014-11-28 | 2017-05-25 | Liquid crystal display panel |
| US16/454,858 US11586084B2 (en) | 2014-11-28 | 2019-06-27 | Liquid crystal display panel |
| US18/147,767 US20230142463A1 (en) | 2014-11-28 | 2022-12-29 | Liquid crystal display panel |
| US18/147,787 US20230140716A1 (en) | 2014-11-28 | 2022-12-29 | Liquid crystal display panel |
| US18/433,510 US20240176198A1 (en) | 2014-11-28 | 2024-02-06 | Liquid crystal display panel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018172226A (ja) * | 2017-03-31 | 2018-11-08 | Agc株式会社 | 無アルカリガラス基板 |
| JPWO2018123675A1 (ja) * | 2016-12-28 | 2019-10-31 | 日本電気硝子株式会社 | ガラス |
| JP2020063168A (ja) * | 2018-10-17 | 2020-04-23 | 日本電気硝子株式会社 | 無アルカリガラス板 |
| JPWO2019181706A1 (ja) * | 2018-03-20 | 2021-03-25 | Agc株式会社 | 基板、液晶アンテナ及び高周波デバイス |
| JPWO2020162605A1 (ja) * | 2019-02-07 | 2021-12-09 | Agc株式会社 | 無アルカリガラス |
| WO2023084979A1 (ja) * | 2021-11-10 | 2023-05-19 | 日本電気硝子株式会社 | 無アルカリガラス板 |
| JP7585791B2 (ja) | 2019-02-07 | 2024-11-19 | Agc株式会社 | 無アルカリガラス |
| US12448320B2 (en) | 2019-02-07 | 2025-10-21 | AGC Inc. | Alkali-free glass |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240150814A (ko) * | 2014-11-28 | 2024-10-16 | 에이지씨 가부시키가이샤 | 액정 디스플레이 패널 |
| KR102180841B1 (ko) * | 2016-12-21 | 2020-11-19 | 주식회사 엘지화학 | 곡면 접합 유리의 제조 방법 및 곡면 접합 유리 |
| KR101911621B1 (ko) * | 2017-02-27 | 2018-10-24 | 주식회사 엘지화학 | 접합 유리 및 접합 유리의 제조 방법 |
| EP3770129B1 (en) | 2018-03-20 | 2023-07-12 | Agc Inc. | Glass substrate, liquid crystal antenna and high-frequency device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013183539A1 (ja) * | 2012-06-05 | 2013-12-12 | 旭硝子株式会社 | ガラス基板の仕上げ研磨方法、および、該方法で仕上げ研磨された無アルカリガラス基板 |
| WO2015080171A1 (ja) * | 2013-11-28 | 2015-06-04 | 旭硝子株式会社 | 無アルカリガラス基板、および、無アルカリガラス基板の薄板化方法 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4534282B2 (ja) | 1999-12-14 | 2010-09-01 | 旭硝子株式会社 | 液晶ディスプレイ基板用ガラス |
| JP2002308643A (ja) | 2001-02-01 | 2002-10-23 | Nippon Electric Glass Co Ltd | 無アルカリガラス及びディスプレイ用ガラス基板 |
| US6887776B2 (en) * | 2003-04-11 | 2005-05-03 | Applied Materials, Inc. | Methods to form metal lines using selective electrochemical deposition |
| JP4737709B2 (ja) * | 2004-03-22 | 2011-08-03 | 日本電気硝子株式会社 | ディスプレイ基板用ガラスの製造方法 |
| JP5252771B2 (ja) * | 2005-06-15 | 2013-07-31 | Hoya株式会社 | 無アルカリガラス、その製造方法および液晶表示装置のtft形成用ガラス基板 |
| CN101331090B (zh) * | 2005-12-16 | 2014-04-16 | 日本电气硝子株式会社 | 无碱玻璃基板及其制造方法 |
| KR101399745B1 (ko) * | 2006-02-10 | 2014-05-26 | 코닝 인코포레이티드 | 고온 및 화학적 안정성을 갖는 유리 조성물 및 그 제조방법 |
| CN101448753B (zh) * | 2006-05-25 | 2012-07-25 | 日本电气硝子株式会社 | 无碱玻璃及无碱玻璃基板 |
| JP2010118409A (ja) | 2008-11-11 | 2010-05-27 | Ulvac Japan Ltd | レーザアニール装置及びレーザアニール方法 |
| CN102471134B (zh) | 2009-07-02 | 2015-04-15 | 旭硝子株式会社 | 无碱玻璃及其制造方法 |
| US8598056B2 (en) | 2010-10-06 | 2013-12-03 | Corning Incorporated | Alkali-free glass compositions having high thermal and chemical stability |
| CN103261109B (zh) * | 2010-12-07 | 2016-10-12 | 旭硝子株式会社 | 无碱玻璃和无碱玻璃的制造方法 |
| EP2660213A4 (en) * | 2010-12-27 | 2014-07-23 | Asahi Glass Co Ltd | NON-ALKALIC GLASS AND METHOD FOR PRODUCING THE NON-ALKALINE GLASS |
| JP5987836B2 (ja) * | 2011-10-31 | 2016-09-07 | 旭硝子株式会社 | ガラス基板およびその製造方法 |
| WO2013129368A1 (ja) * | 2012-02-27 | 2013-09-06 | 旭硝子株式会社 | 無アルカリガラスの製造方法 |
| CN104271526B (zh) | 2012-04-27 | 2016-12-07 | 旭硝子株式会社 | 无碱玻璃及其制造方法 |
| WO2013183626A1 (ja) | 2012-06-05 | 2013-12-12 | 旭硝子株式会社 | 無アルカリガラスおよびその製造方法 |
| JP2013253309A (ja) | 2012-06-08 | 2013-12-19 | Sh Copper Products Co Ltd | Cu−Mn合金スパッタリングターゲット材、それを用いた半導体素子の積層配線及び積層配線の製造方法 |
| WO2014087971A1 (ja) * | 2012-12-05 | 2014-06-12 | 旭硝子株式会社 | 無アルカリガラス基板 |
| JP6037117B2 (ja) | 2012-12-14 | 2016-11-30 | 日本電気硝子株式会社 | ガラス及びガラス基板 |
| CN105164068A (zh) | 2012-12-21 | 2015-12-16 | 康宁股份有限公司 | 具有改进的总节距稳定性的玻璃 |
| JP5782058B2 (ja) | 2013-02-21 | 2015-09-24 | AvanStrate株式会社 | ガラスシートの製造方法、ガラスシート製造装置、及びガラス積層体 |
| KR20240150814A (ko) * | 2014-11-28 | 2024-10-16 | 에이지씨 가부시키가이샤 | 액정 디스플레이 패널 |
-
2015
- 2015-11-27 KR KR1020247033007A patent/KR20240150814A/ko active Pending
- 2015-11-27 JP JP2016561965A patent/JPWO2016084952A1/ja active Pending
- 2015-11-27 KR KR1020177014083A patent/KR20170086529A/ko not_active Ceased
- 2015-11-27 WO PCT/JP2015/083464 patent/WO2016084952A1/ja not_active Ceased
- 2015-11-27 TW TW104139835A patent/TWI693201B/zh active
- 2015-11-27 KR KR1020237035340A patent/KR102714914B1/ko active Active
- 2015-11-27 CN CN201580064686.3A patent/CN107003553B/zh active Active
- 2015-11-27 TW TW108129622A patent/TWI766182B/zh active
-
2017
- 2017-05-25 US US15/605,235 patent/US10386686B2/en active Active
-
2019
- 2019-06-27 US US16/454,858 patent/US11586084B2/en active Active
- 2019-07-04 JP JP2019125095A patent/JP2019219663A/ja active Pending
- 2019-10-23 JP JP2019192754A patent/JP2020034928A/ja active Pending
- 2019-10-23 JP JP2019192753A patent/JP2020076985A/ja active Pending
-
2021
- 2021-04-09 JP JP2021066554A patent/JP7188487B2/ja active Active
-
2022
- 2022-11-30 JP JP2022191502A patent/JP7496051B2/ja active Active
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- 2022-12-29 US US18/147,767 patent/US20230142463A1/en not_active Abandoned
-
2024
- 2024-02-06 US US18/433,510 patent/US20240176198A1/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013183539A1 (ja) * | 2012-06-05 | 2013-12-12 | 旭硝子株式会社 | ガラス基板の仕上げ研磨方法、および、該方法で仕上げ研磨された無アルカリガラス基板 |
| WO2015080171A1 (ja) * | 2013-11-28 | 2015-06-04 | 旭硝子株式会社 | 無アルカリガラス基板、および、無アルカリガラス基板の薄板化方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022116123A (ja) * | 2016-12-28 | 2022-08-09 | 日本電気硝子株式会社 | ガラス |
| JPWO2018123675A1 (ja) * | 2016-12-28 | 2019-10-31 | 日本電気硝子株式会社 | ガラス |
| JP7121345B2 (ja) | 2016-12-28 | 2022-08-18 | 日本電気硝子株式会社 | ガラス |
| US10640416B2 (en) | 2017-03-31 | 2020-05-05 | AGC Inc. | Alkali-free glass substrate |
| JP2018172226A (ja) * | 2017-03-31 | 2018-11-08 | Agc株式会社 | 無アルカリガラス基板 |
| JPWO2019181706A1 (ja) * | 2018-03-20 | 2021-03-25 | Agc株式会社 | 基板、液晶アンテナ及び高周波デバイス |
| JP2020063168A (ja) * | 2018-10-17 | 2020-04-23 | 日本電気硝子株式会社 | 無アルカリガラス板 |
| JP7478340B2 (ja) | 2018-10-17 | 2024-05-07 | 日本電気硝子株式会社 | 無アルカリガラス板 |
| US12122715B2 (en) | 2018-10-17 | 2024-10-22 | Nippon Electric Glass Co., Ltd. | Alkali-free glass plate |
| JPWO2020162605A1 (ja) * | 2019-02-07 | 2021-12-09 | Agc株式会社 | 無アルカリガラス |
| JP7585791B2 (ja) | 2019-02-07 | 2024-11-19 | Agc株式会社 | 無アルカリガラス |
| JP7593109B2 (ja) | 2019-02-07 | 2024-12-03 | Agc株式会社 | 無アルカリガラス |
| US12448319B2 (en) | 2019-02-07 | 2025-10-21 | AGC Inc. | Alkali-free glass |
| US12448320B2 (en) | 2019-02-07 | 2025-10-21 | AGC Inc. | Alkali-free glass |
| WO2023084979A1 (ja) * | 2021-11-10 | 2023-05-19 | 日本電気硝子株式会社 | 無アルカリガラス板 |
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| TW201625503A (zh) | 2016-07-16 |
| US20170329192A1 (en) | 2017-11-16 |
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| KR102714914B1 (ko) | 2024-10-14 |
| KR20230148860A (ko) | 2023-10-25 |
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| CN107003553B (zh) | 2020-10-27 |
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| JP2023036599A (ja) | 2023-03-14 |
| KR20170086529A (ko) | 2017-07-26 |
| US20190317376A1 (en) | 2019-10-17 |
| JP2019219663A (ja) | 2019-12-26 |
| US20230140716A1 (en) | 2023-05-04 |
| US11586084B2 (en) | 2023-02-21 |
| CN107003553A (zh) | 2017-08-01 |
| JP2024112881A (ja) | 2024-08-21 |
| JP2020076985A (ja) | 2020-05-21 |
| JP2021130604A (ja) | 2021-09-09 |
| JP7188487B2 (ja) | 2022-12-13 |
| TWI766182B (zh) | 2022-06-01 |
| US10386686B2 (en) | 2019-08-20 |
| TWI693201B (zh) | 2020-05-11 |
| JPWO2016084952A1 (ja) | 2017-10-05 |
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