WO2013187683A1 - 강화유리 커팅 방법 및 커팅 장치 - Google Patents
강화유리 커팅 방법 및 커팅 장치 Download PDFInfo
- Publication number
- WO2013187683A1 WO2013187683A1 PCT/KR2013/005159 KR2013005159W WO2013187683A1 WO 2013187683 A1 WO2013187683 A1 WO 2013187683A1 KR 2013005159 W KR2013005159 W KR 2013005159W WO 2013187683 A1 WO2013187683 A1 WO 2013187683A1
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- WIPO (PCT)
- Prior art keywords
- glass
- cutting
- compressive stress
- tempered glass
- cut
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/09—Severing cooled glass by thermal shock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
- B28D1/221—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising by thermic methods
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
- C03B25/02—Annealing glass products in a discontinuous way
- C03B25/025—Glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
- C03B33/033—Apparatus for opening score lines in glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/07—Cutting armoured, multi-layered, coated or laminated, glass products
- C03B33/072—Armoured glass, i.e. comprising reinforcement
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/09—Severing cooled glass by thermal shock
- C03B33/091—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/09—Severing cooled glass by thermal shock
- C03B33/091—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam
- C03B33/093—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam using two or more focussed radiation beams
-
- 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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- 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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/008—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in solid phase, e.g. using pastes, powders
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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
- G02F1/133351—Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- the present invention relates to a tempered glass cutting method and a cutting device, and more particularly, to a tempered glass cutting method and cutting device for subdividing the tempered disc glass into unit glass.
- Glass products are treated as essential components in a wide range of technologies and industries, such as monitors, cameras, VTRs, mobile phones, video and optical equipment, automobiles, transportation equipment, various tableware, and construction facilities. According to the present invention, glass having various physical properties is manufactured and used.
- OLED organic light emitting display
- LCD liquid crystal display
- PDP plasma display
- FED field emission display
- Glass reinforcement methods include physical reinforcement and chemical reinforcement, commonly referred to as wind-cooling reinforcement, which are mainly applied to automobile safety glass.
- Chemical reinforcement is a technique that can be usefully applied to thin glass having a complex shape or a thickness of about 2 mm or less.
- This chemical strengthening is a technique in which small alkali ions (mainly Na ions) existing in the glass are exchanged with large alkali ions (mainly K ions) under predetermined conditions, and a large compressive stress is applied to the glass surface by ion exchange. Resulting in increased strength and hardness.
- the original glass is subjected to a flattening step, and then a step of cutting the original glass to a shape and size using a cutter is performed.
- a cutting process may cause deformation or stress due to mechanical processing or the like in the glass, which may adversely affect the reliability of the product, and also may cause waste to be discarded due to poor cutting, thereby lowering the yield. It is becoming.
- the unit glass is immersed in a working tank containing potassium nitrate (KNO3) solution heated to a temperature of 450 °C to 500 °C, and the unit glass is immersed for more than 3 hours in the working tank is strengthened by ion substitution.
- KNO3 potassium nitrate
- the unit glass withdrawn from the work tank is subjected to a cleaning process and a drying process.
- the method of manufacturing such chemically strengthening unit glass has a disadvantage in that the production efficiency of the tempered glass is low by chemically strengthening after cutting in advance to the desired size before strengthening the glass.
- the glass is chemically strengthened and then cut into unit glass using a water jet, a scribe device, or a laser, but this method is also used for deformation or stress caused by mechanical processing in the glass in the cutting process.
- this method is also used for deformation or stress caused by mechanical processing in the glass in the cutting process.
- the presence of the product can adversely affect the reproducibility of the product, and also due to the generation of the part discarded by the cutting failure, the production efficiency of the tempered glass is low.
- a photoresist pattern is formed on a portion of the tempered disc glass except for a portion to be cut, and the cut portion is cut by wet etching with acid and the photoresist is removed again.
- a method is disclosed. However, the method not only increases the manufacturing cost of tempered glass by having additional processes such as a photoresist process and an etching process for cutting the original glass, but also removes hydrofluoric acid (HF), sulfuric acid (H 2 SO 4 ), etc. during etching. There is a problem that environmental pollution occurs by using.
- Patent No. 10-1022591 discloses a method of cutting a disc glass by patterning both sides of the disc glass into a chemically strengthened region and a non-chemically strengthened region, followed by ion exchange, and then cutting a portion that is not ion exchanged. Doing.
- the method is not only difficult to fine process the width of the pattern within 1mm, but also may cause a problem of double-sided pattern matching, the ion exchange liquid flows into the pattern portion during the ion exchange process, causing defects in cutting, and also a large area When applied to glass, there is a problem that warp occurs in the glass due to stress due to local ion exchange.
- an object of the present invention is to prevent a defect in the glass broken when cutting the tempered glass and a method of cutting and tempered glass that can improve the reliability of the product To provide a device.
- the present invention comprises a strengthening step of strengthening the original glass by generating a compressive stress on the original glass; A compressive stress relaxation step of alleviating the compressive stress by applying heat to a cut portion to be cut of the strengthened disc glass; And a cutting step of cutting the cutting unit.
- the compressive stress relaxation step may be performed by applying heat to the cut portion using a hot wire to relax the compressive stress.
- the heat applied to the cut portion in the compressive stress relaxation step may be a temperature below the melting point or more than the transition point of the strengthened disc glass.
- the compressive stress of the cut portion relaxed by the compressive stress relaxation step may be 100Mpa or less.
- the width of the cut portion may be 5 mm or less.
- the strengthening step may be to chemically strengthen or thermally strengthen the original glass.
- the chemical strengthening may be performed by coating the surface of the original glass with an ion exchange solution slurry containing a mixture of potassium nitrate solution and zinc oxide powder, followed by drying and heating.
- the cutting unit may be cut using a laser or a scribe device.
- the present invention is a tempered glass cutting device for cutting the original glass by strengthening the compressive stress, comprising: a substrate having a groove formed on one surface on which the glass is seated; And it provides a tempered glass cutting device comprising a heating wire disposed in the groove.
- the groove may be a plurality.
- the substrate may be a heat resistant glass substrate.
- the present invention after reinforcing the original glass, by cutting only the cut portion by removing the compressive stress, it is possible to prevent the breakage due to deformation or stress of the glass in the cutting process.
- the reliability of the cut glass may be ensured, and cutting defects may be prevented to improve production yield of the unit glass.
- cutting efficiency and productivity can be improved by simply and efficiently relieving the compressive stress of original glass by a hot wire.
- FIG. 1 is a schematic flowchart of a tempered glass cutting method according to an embodiment of the present invention.
- Figure 2 is a schematic cross-sectional view of the tempered glass cutting device according to an embodiment of the present invention.
- Figure 3 is a photograph of the cut surface of the original glass cut without heat treatment by hot wire with a transmission microscope.
- Figure 4 is a photograph of the cut surface cut after the heat treatment of the original glass by hot wire with a transmission microscope.
- FIG. 1 is a schematic flowchart of a tempered glass cutting method according to an embodiment of the present invention.
- the tempered glass cutting method according to the present invention may include a strengthening step (S100), a compressive stress relaxation step (S200), and a cutting step (S300).
- the method of strengthening by generating compressive stress on the original glass may include a chemical strengthening method or a thermal strengthening method.
- the method of generating and compressing the compressive stress on the glass may be applied.
- the strengthening step according to an embodiment of the present invention may be made through a dry chemical strengthening method of coating the surface of the original glass with an ion exchange solution slurry of a mixture of potassium nitrate solution and zinc oxide powder, dried and then heated to strengthen.
- Zinc oxide powder has good spreadability, forms a homogeneous film on the glass surface and easily adheres to the glass, and removes impurities in potassium nitrate salt, and can be easily washed with water after ion exchange treatment.
- productivity of the tempered glass can be improved, and deterioration of ion exchange characteristics due to impurities in potassium nitrate can be prevented.
- the potassium nitrate solution preferably has a concentration in the range of 10 g / water 100 ml to solubility. If the concentration of potassium nitrate is less than 10g / 100ml of water, the concentration of potassium required for ion exchange will not be sufficient, resulting in a slow ion exchange rate and insufficient compressive stress on the glass surface. . On the other hand, if the potassium nitrate concentration is higher than the solubility, potassium nitrate is not sufficiently dissolved, and thus, local ion exchange is performed on the glass surface, thereby preventing the formation of a homogeneous compressive stress on the glass surface. When dissolving potassium nitrate in water, the dissolution temperature is preferably maintained at room temperature to 90 °C.
- the average particle size of the zinc oxide powder is preferably 1 ⁇ m or less in order to achieve uniform ion exchange and to improve fluidity of the mixed solution.
- the zinc oxide powder is preferably mixed at a ratio of 15 g to 50 g with respect to 100 ml of potassium nitrate solution.
- the zinc oxide powder is less than 15 g with respect to 100 ml of potassium nitrate solution, it is impossible to form a large compressive stress on the glass surface.
- the zinc oxide powder is more than 50 g, the viscosity of the solution becomes large, making it difficult to prepare a homogeneous mixed solution. The problem arises that the coating amount becomes excessive.
- the heat applied to the cut will have a temperature below the melting point above the transition point of the tempered disc glass.
- the cut will be heated to a temperature of 300-400 ° C.
- Heat is preferably applied for a short time within 10 seconds.
- the compressive stress of the cut portion relaxed by the compressive stress relaxation step S200 is 100 Mpa or less.
- the width of the cutout may be 5 mm or less, preferably 2 mm or less. The narrower the cut, the higher the yield of unit glass produced by the cut.
- the compressive stress relaxation step may be achieved by applying heat to the cutout by the hot wire.
- the width of the cut portion can be made very thin, whereby the production yield of the unit glass can be improved.
- the above-described compressive stress relaxation step may be made by a tempered glass cutting device as shown in FIG.
- the apparatus for cutting tempered glass includes a substrate 100 having a groove formed on one surface on which tempered disc glass to be cut is mounted, and a heating wire 200 disposed in the groove. Is done.
- the compressive stress of the strengthened disc glass may be easily and efficiently.
- the groove may be a plurality.
- Productivity can be improved by mitigating the compressive stress of the multiple cut
- the substrate 100 since the substrate 100 must withstand the heat generated by the heating wire 200, the substrate 100 may be formed of heat resistant glass.
- the strengthened disc glass is cut into unit glass (S300).
- Cutting of the cutting unit may be performed using a laser or a scribe device, but may be performed by various methods such as, but not limited to, a water jet.
- the disc glass or unit glass is broken by deformation or stress, etc. by mechanical processing during the cutting process to the unit glass Defects can be prevented.
- FIG. 3 is a photograph of the cut surface obtained by cutting the original glass without heat treatment by a heating wire
- FIG. 4 is a photograph of the cut surface obtained after the heat treatment of the original glass by a heating wire with a transmission microscope.
- the cut surface obtained by cutting the original glass without the heat treatment by the hot wire causes a defect such as cracking.
- the cut surface is smooth and there is no defect such as cracking.
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Abstract
Description
Claims (11)
- 원판 유리에 압축 응력을 발생시켜 원판 유리를 강화시키는 강화 단계;
상기 강화된 원판 유리의 절단하고자 하는 절단부에 열을 가해 압축 응력을 완화하는 압축 응력 완화 단계; 및
상기 절단부를 커팅하는 커팅 단계를 포함하는 것을 특징으로 하는 강화유리 커팅 방법. - 제1항에 있어서,
상기 압축 응력 완화 단계는 열선을 이용하여 상기 절단부에 열을 가해 압축 응력을 완화함으로써 이루어지는 것을 특징으로 하는 강화유리 커팅 방법. - 제1항에 있어서,
상기 압축 응력 완화 단계에서 상기 절단부에 가해지는 열은 강화된 상기 원판 유리의 전이점 이상 용융점 미만의 온도를 갖는 것을 특징으로 하는 강화유리 커팅 방법. - 제1항에 있어서,
상기 압축 응력 완화 단계에 의해 완화된 절단부의 압축응력은 100Mpa 이하인 것을 특징으로 하는 강화유리 커팅 방법. - 제1항에 있어서,
상기 절단부의 폭은 5㎜ 이하인 것을 특징으로 하는 강화유리 커팅 방법. - 제1항에 있어서,
상기 강화 단계는,
상기 원판 유리를 화학강화 또는 열강화하는 것을 특징으로 하는 강화유리 커팅 방법. - 제6항에 있어서,
상기 화학강화는,
원판 유리의 표면을 질산칼륨 용액과 산화아연 분말을 혼합한 이온교환용액 슬러리로 피복시켜 건조한 후 가열하여 이루어지는 것을 특징으로 하는 강화유리 커팅 방법. - 제1항에 있어서,
상기 커팅 단계는,
레이저 또는 스크라이브(scribe) 장치를 이용하여 상기 절단부를 커팅하는 것을 특징으로 하는 강화유리 커팅 방법. - 압축 응력을 발생시켜 강화한 원판 유리를 커팅하는 강화유리 커팅 장치에 있어서,
상기 원판 유리가 안착되는 일면에 홈이 형성된 기판; 및
상기 홈에 배치되는 열선을 포함하는 강화유리 커팅 장치. - 제9항에 있어서,
상기 홈은 복수 개인 것을 특징으로 하는 강화유리 커팅 장치. - 제9항에 있어서,
상기 기판은 내열 유리 기판인 것을 특징으로 하는 강화유리 커팅 장치.
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JP2015517183A JP6135755B2 (ja) | 2012-06-12 | 2013-06-12 | 強化ガラスのカッティング方法及びカッティング装置 |
US14/407,921 US9896371B2 (en) | 2012-06-12 | 2013-06-12 | Tempered glass cutting method and cutting apparatus |
CN201380036734.9A CN104661973B (zh) | 2012-06-12 | 2013-06-12 | 钢化玻璃切割方法及切割设备 |
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KR1020120062779A KR101681931B1 (ko) | 2012-06-12 | 2012-06-12 | 강화유리 커팅 방법 및 커팅 장치 |
KR10-2012-0062779 | 2012-06-12 |
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US (1) | US9896371B2 (ko) |
JP (1) | JP6135755B2 (ko) |
KR (1) | KR101681931B1 (ko) |
CN (1) | CN104661973B (ko) |
TW (1) | TWI468353B (ko) |
WO (1) | WO2013187683A1 (ko) |
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JP5924489B2 (ja) * | 2012-06-21 | 2016-05-25 | 日本電気硝子株式会社 | 強化ガラスの製造方法 |
KR101521542B1 (ko) * | 2013-09-06 | 2015-05-29 | 주식회사 제우스 | 강화유리 절단장치 및 강화유리 절단방법 |
US11097974B2 (en) | 2014-07-31 | 2021-08-24 | Corning Incorporated | Thermally strengthened consumer electronic glass and related systems and methods |
JP6923555B2 (ja) | 2016-01-12 | 2021-08-18 | コーニング インコーポレイテッド | 薄厚熱強化及び化学強化ガラス系物品 |
WO2021025981A1 (en) | 2019-08-06 | 2021-02-11 | Corning Incorporated | Glass laminate with buried stress spikes to arrest cracks and methods of making the same |
KR20210093051A (ko) * | 2020-01-17 | 2021-07-27 | 코닝 인코포레이티드 | 유리 라미네이트 물품의 제조 방법 |
CN113754262A (zh) * | 2020-06-19 | 2021-12-07 | 江西省亚华电子材料有限公司 | 一种摄像头镜片加工工艺 |
CN115215538A (zh) * | 2021-04-15 | 2022-10-21 | 大族激光科技产业集团股份有限公司 | 一种玻璃的激光切孔方法及激光切割装置 |
CN115140950B (zh) * | 2022-09-05 | 2022-11-08 | 山东中清智能科技股份有限公司 | 一种光电模块用玻璃及其制备方法 |
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- 2013-06-12 JP JP2015517183A patent/JP6135755B2/ja active Active
- 2013-06-12 CN CN201380036734.9A patent/CN104661973B/zh active Active
- 2013-06-12 WO PCT/KR2013/005159 patent/WO2013187683A1/ko active Application Filing
- 2013-06-12 US US14/407,921 patent/US9896371B2/en active Active
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JP2002289899A (ja) * | 2001-03-23 | 2002-10-04 | Mitsubishi Heavy Ind Ltd | 太陽電池パネルの切断装置及び方法 |
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JP2015519290A (ja) | 2015-07-09 |
KR20130139068A (ko) | 2013-12-20 |
US20150166390A1 (en) | 2015-06-18 |
JP6135755B2 (ja) | 2017-05-31 |
CN104661973B (zh) | 2017-08-15 |
KR101681931B1 (ko) | 2016-12-02 |
TW201404731A (zh) | 2014-02-01 |
US9896371B2 (en) | 2018-02-20 |
CN104661973A (zh) | 2015-05-27 |
TWI468353B (zh) | 2015-01-11 |
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