WO2005042421A1 - ガラスの切断方法 - Google Patents
ガラスの切断方法 Download PDFInfo
- Publication number
- WO2005042421A1 WO2005042421A1 PCT/JP2004/015779 JP2004015779W WO2005042421A1 WO 2005042421 A1 WO2005042421 A1 WO 2005042421A1 JP 2004015779 W JP2004015779 W JP 2004015779W WO 2005042421 A1 WO2005042421 A1 WO 2005042421A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- laser
- scribe line
- laser beam
- scribe
- Prior art date
Links
Classifications
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/042—Automatically aligning the laser beam
-
- 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
- C03B33/07—Cutting armoured, multi-layered, coated or laminated, glass products
- C03B33/076—Laminated glass comprising interlayers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/10—Methods
- Y10T225/12—With preliminary weakening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/30—Breaking or tearing apparatus
- Y10T225/304—Including means to apply thermal shock to work
Definitions
- the present invention relates to a method for cutting glass, and more particularly to a method for cutting laminated glass.
- a scribe line (cut line) 62 is put on the surface of the glass 60 with a blade 61 such as a diamond blade or an ultra-high blade, and then from the back surface. It is known to apply a breaking force (impact breaking force) 63 and cut the glass 60 along the scribe line 62.
- a method of cutting glass using a laser is also known.
- an infrared laser 74 having a relatively high absorptivity for glass 60 is irradiated in a shape of an ellipse, and the vicinity of the rear side of the laser irradiation unit is refrigerated 75. Cool with (aqueous coolant). That is, the glass 60 has been cut in advance! An initial crack is manually created in the part, and the laser 74 is irradiated from the part, and the vicinity of the rear side of the irradiated part is made of a liquid (or gas) refrigerant. Scan both on glass 60 while cooling by 75.
- the initial crack progresses in the direction to be cut by the thermal strain inside the glass 60, and the scribe line 72 is formed.
- the glass 60 is cut by applying a breaking force 73 to the back surface force of the glass 60.
- Patent Document 3 proposes to obtain laser beams of various laser oscillator forces in two systems and irradiate the front and back surfaces of the substrate with linear laser beams.
- the substrate is LCD
- the display device is a glass substrate such as a solar cell, a quartz substrate, etc., and the two are bonded together.
- a linear laser beam forms a scribing line, that is, a scribe line, simultaneously or sequentially on two substrates, and the substrate on which the scribe line is formed is heated by irradiating a wide laser beam, causing thermal distortion to the substrate. Let's break along the scribe line. Note that the linear laser light is shaped into a rectangular shape by a cylindrical lens array or the like.
- Patent Document 1 Japanese Patent Laid-Open No. 9 150286
- Patent Document 2 Japanese Patent Laid-Open No. 5-32428
- Patent Document 3 Japanese Patent Laid-Open No. 2001-179473
- the laminated glass In the case of using two systems of laser light, the laminated glass is inverted. However, since laser light is emitted from one side and the other side of the laminated glass, it is necessary to secure optical paths on both the front and back sides of the glass, making the device structure complicated. However, not only does the apparatus become large, but the work of adjusting the irradiation position of the two systems of laser light on the glass must be carried out from both the front and back sides of the glass, which is complicated.
- the present invention has been made in view of such a conventional technical problem, and the configuration thereof is as follows.
- the first glass member 5a and the second glass member 5b are bonded to each other with the spacer 5c interposed therebetween, and a light transmitting substance is accommodated between the two glass members 5a and 5b.
- the first laser beam 2 and the second laser beam 3 which are ultraviolet laser powers are also irradiated with the side force of the second glass member 5b, and the first laser beam 2 is transmitted through the second glass member 5b to be transmitted through the first glass member 5b.
- the first laser beam 2 is transmitted through the second glass member 5b to be transmitted through the first glass member 5b.
- a glass cutting method characterized by cutting a first scribe line 14 and a second scribe line 15 by applying a breaking force.
- the invention of claim 2 is characterized in that the first scribe line 14 is formed first, and then the second scribe line 15 is formed above the first scribe line 14. This is a glass cutting method.
- the invention of claim 3 is characterized in that the first laser beam 2 and the second laser beam 3 are either a linear beam or an elliptical beam. Or 3 is a method of cutting glass.
- the glass cutting method according to the present invention can provide the following effects.
- each laser beam is irradiated from the side of the second glass member, and the first laser beam is irradiated to the second laser beam.
- the first glass member and the light transmitting material are transmitted through the first.
- the first scribe line is formed by focusing on the glass member, the second laser beam is focused on the second glass member to form the second scribe line, and then the breaking force is applied to cut the second scribe line. I refuse. For this reason, the inversion process of a laminated glass becomes unnecessary at the time of a scribe.
- first and second laser beams are irradiated only on one side of the laminated glass, it is only necessary to secure an optical path on only one side of the glass, which simplifies the device structure and reduces the size of the device.
- the work to adjust the irradiation position of the two laser beams on the glass is made only on one side of the glass and can be easily performed.
- the break time can be significantly shortened, and the laminated glass can be cut very efficiently.
- a laser beam is irradiated on the first glass member far from the laser beam to form a scribe line, and the second glass member on the next closest side is formed similarly. Apply the following measures. This ensures that the scribe line is formed on the first glass member as a position overlapping the scribe line of the second glass member without causing light scattering by the scribe line formed on the second glass member. Can do.
- the laser is optimal for scribe without reducing the original output of the ultraviolet laser. It becomes possible to secure a large area having an energy density on the scribe line, to significantly increase the scribe speed, and thus to efficiently cut the glass.
- FIG. 1 is a schematic diagram showing a cutting device used in a glass cutting method according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing the main part of the substrate.
- FIG. 3 shows a linear beam and an elliptical beam
- FIG. 3 (A) shows a linear beam
- FIG. 3 (B) shows an elliptical beam.
- FIG. 4 is an explanatory view showing the laser beam superposition state
- FIG. 3 (A) is a diagram showing the linear beam superposition state
- FIG. 3 (B) is an elliptical beam superposition state
- FIG. 5 is a diagram showing the same wavelength-transmittance characteristics of ultraviolet light.
- FIG. 6 is a perspective view showing a conventional cutting method.
- FIG. 7 is a perspective view showing a conventional cutting method.
- the present invention is a method for cutting glass in which a device that only needs to irradiate the first and second laser beams on one side of the laminated glass and secure an optical path only on one side of the glass is reduced in size and simplified.
- the purpose is to provide the law.
- FIG. 1 and FIG. 4 show one embodiment of a glass cutting device according to the present invention.
- reference numeral 1 denotes a laser oscillation device.
- the first laser beam 2 and the second laser beam 3 which are emitted from the laser oscillation device 1 and have an ultraviolet laser power are scribed on the substrate 5 as scribe lines 14 and 14. 15 is formed, and then the substrate 5 is cut.
- the laser oscillation device 1 may be separately equipped with a laser beam that emits the first laser beam 2 and a laser beam that emits the second laser beam 3, but one laser that is emitted by one laser oscillator force.
- the light may be separated by a noise mirror (not shown), one being the first laser beam 2 and the other being the second laser beam 3. Since this laser oscillation device 1 emits an ultraviolet laser, for example, a device that generates the third harmonic of an Nd: YAG laser can be used.
- the substrate 5 is a flat panel display substrate such as a liquid crystal display, and as shown in FIG. 2, two glass members 5a and 5b are bonded to each other with a spacer 5c interposed therebetween, so that a pair of spacers is provided. Between 5c and the first and second glass members 5a and 5b, there is a cut portion 5d in which a light transmitting material is accommodated. Therefore, the substrate 5 is a laminated glass.
- Both the first laser beam 2 and the second laser beam 3 are guided in parallel to one side (the upper side in the figure) of the substrate 5, and are linearly or elliptically formed by the beam shaping elements 7 and 8, respectively. After shaping, the light is deflected by 90 ° by the mirrors 10 and 11 and collected by the condenser lenses 12 and 13 to irradiate the substrate 5 almost vertically from the 1 side.
- the laser beams 2 and 3 shaped by the beam shaping elements 7 and 8 are the linear beam shown in FIG. 3 (A) or the elliptical beam shown in FIG. 3 (B).
- the first laser beam 2 transmitted through one condenser lens 12 is applied to the substrate 5 from the first side.
- the first scribe line 14 is formed by being transmitted through the second glass member 5b and condensed at a predetermined position of the first glass member 5a located on the lower side. Since the first laser beam 2 that also has an ultraviolet laser power has good glass permeability, when the first laser beam 2 is transmitted through the second glass member 5b well and focused on a predetermined position of the first glass member 5a, the glass Scribe lines 14 are formed by directly breaking internal molecular bonds. The scribe line 14 is formed without making an initial crack.
- the portion where the scribe line 14 is formed that is, the portion where the substrate 5 is cut is the cut portion 5d in which the light transmitting material between the spacers 5c and 5c is accommodated.
- 2 transmits the second glass member 5b located on the upper side and the light transmitting substance, reaches the first glass member 5a located on the lower side well, and collects light according to the focal position of the condenser lens 12. Is done.
- the first laser beam 2 is sufficiently dispersed so as to pass through without causing damage (photochemical reaction due to vaporization, evaporation, dissociation, ionization, etc.) to the second glass member 5b.
- the transmittance 0/0 of the ultraviolet light to a flat panel display glass having a thickness of 0. 7 mm appears to be shown in FIG. 5, a UV laser for example Nd: 3-fold higher tone YAG laser In the wave (wavelength: 355nm), about 85% is transmitted. However, for the 4th harmonic (wavelength: 266 nm), the transmittance is almost 5%, which is inappropriate for the first laser beam 2. Therefore, as the first laser beam 2, an ultraviolet laser having a wavelength with a transmittance of 80% or more, preferably 85% or more is suitable.
- the second laser beam 3 transmitted through the other condenser lens 13 is irradiated onto the substrate 5 from the first side, and is condensed at a predetermined position of the second glass member 5b located on the upper side.
- a second scribe line 15 is formed at the same time.
- the scribe direction X for forming both scribe lines 14 and 15 is the right side in FIG. 1, the first scribe line 14 is formed first, and then the second scribe line 15 is formed.
- the second scribe line 15 is formed so as to overlap the upper side of the first scribe line 14.
- the scribe direction X can be given by giving relative movement to the substrate 5 and the first and second laser beams 2 and 3.
- the substrate 5 is moved by moving a mounting table (not shown) of the substrate 5.
- the first and second laser beams 2 and 3 can be moved by moving the laser oscillation device 1, the beam shaping elements 7 and 8, the mirrors 10 and 11, and the condenser lenses 12 and 13 together.
- the laser beams 2 and 3 which are ultraviolet laser powers, are pulsed and irradiate the substrate 5 while moving it relative to the scribe direction X and properly overlapping it. For this reason, the linear beam shown in FIG. 3 (A) and the elliptical beam shown in (B) are overlapped at predetermined intervals as shown in FIGS. 4 (A) and (B), respectively.
- Set the relative movement speed in the scribe direction X so that.
- Laser energy density optimal for scribing without reducing the original output of the ultraviolet laser emitted from the laser oscillation device 1 by making the irradiation shape of the ultraviolet laser on the glass a linear beam or an elliptical beam It is possible to ensure a long area on the scribe lines 14 and 15 and increase the scribe speed.
- the laser with the maximum output has an appropriate energy density.
- the glass (substrate 5) is irradiated with the optimal energy density to form a scribe line 14, 15 in a large area by shaping into a linear beam or an elliptical beam of the size Form 15 effectively.
- Short-wavelength ultraviolet lasers are capable of photochemical degradation with a large photon energy, and are suitable at an appropriate energy density. If a positive irradiation time is given, precise and fine processing with little influence on the surroundings is possible.
- the first laser beam 2 and the second laser beam 3 which are pulsed ultraviolet laser powers can move a linear beam or an elliptical beam per pulse. Therefore, it is possible to shorten the formation time of the scribe lines 14 and 15 required for cutting the glass.
- the laser beam at the location where the scribe lines 14 and 15 are formed is formed.
- the energy density of about 28jZcm2 is required, and for the same energy density, a linear beam (rectangular beam) of 20 ⁇ ⁇ 40 ⁇ m is twice that of a square beam of 20 m ⁇ 20 m. Scan speed can be obtained.
- the laser beam of the ultraviolet laser that makes one side (upper side in the figure) force incident on the two glasses in the laminated glass 2 , 3 can be simultaneously and efficiently scribed by condensing them at their target locations.
- the inversion process of the laminated glass is not necessary.
- a slight time delay is added to the two laser beams 2 and 3, and the first glass member 5a and the second glass member 5b of the substrate 5 made of laminated glass are purple at the overlapping position. Irradiation with an external laser makes it possible to form scribe lines almost simultaneously and at high speed.
- the energy profile of the laser beams 2 and 3 is preferably a flat line beam.
- This type of laser beam 2, 3 is a split superposition of laser beams,
- the laser beam can be formed by shaping with a rectangular kaleidoscope or by shaping with a quinofolum phase control plate.
- the substrate 5 which is the laminated glass on which the scribe lines 14 and 15 are thus formed is cut along the scribe lines 14 and 15 by a breaking process.
- Conventionally known means can be employed as the break means in the break process, and any of mechanical impact, cooling with a liquid or gas refrigerant, and infrared laser irradiation can be used.
- the substrate 5 on which the scribe lines 14 and 15 are formed is subjected to a breaking force by the breaking means from both the front and back surfaces, and the two first and second glass members 5a and 5b are simultaneously cut, whereby the substrate 5 is sliced. Divided into multiples along lines 14, 15. Fortunately, the time required to cut the glass is significantly reduced.
- each laser beam 2 and 3 is condensed on one side (the upper surface in the figure) of the glass members 5a and 5b.
- each laser beam 2 and 3 is condensed on the other side (lower surface in the figure) of each glass member 5a and 5b to form a scribe line (14, 15). It is also possible to cut the substrate 5 by applying a breaking force to the parts 14 and 15).
- the present invention is not limited to two-layer laminated glass, but can be applied to two or more laminated glass.
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- Optics & Photonics (AREA)
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- Health & Medical Sciences (AREA)
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- Plasma & Fusion (AREA)
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- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/551,760 US7423237B2 (en) | 2003-10-31 | 2004-10-25 | Method of cutting laminated glass with laser beams |
DE200411000581 DE112004000581B4 (de) | 2003-10-31 | 2004-10-25 | Verfahren zum Schneiden von Glas |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003372155A JP4175636B2 (ja) | 2003-10-31 | 2003-10-31 | ガラスの切断方法 |
JP2003-372155 | 2003-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005042421A1 true WO2005042421A1 (ja) | 2005-05-12 |
Family
ID=34543993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/015779 WO2005042421A1 (ja) | 2003-10-31 | 2004-10-25 | ガラスの切断方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7423237B2 (ja) |
JP (1) | JP4175636B2 (ja) |
KR (1) | KR100699729B1 (ja) |
DE (1) | DE112004000581B4 (ja) |
WO (1) | WO2005042421A1 (ja) |
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KR102174928B1 (ko) * | 2019-02-01 | 2020-11-05 | 레이저쎌 주식회사 | 멀티 빔 레이저 디본딩 장치 및 방법 |
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KR100701013B1 (ko) * | 2001-05-21 | 2007-03-29 | 삼성전자주식회사 | 레이저 빔을 이용한 비금속 기판의 절단방법 및 장치 |
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- 2003-10-31 JP JP2003372155A patent/JP4175636B2/ja not_active Expired - Fee Related
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2004
- 2004-10-25 KR KR1020057018819A patent/KR100699729B1/ko not_active IP Right Cessation
- 2004-10-25 DE DE200411000581 patent/DE112004000581B4/de not_active Expired - Fee Related
- 2004-10-25 US US10/551,760 patent/US7423237B2/en not_active Expired - Fee Related
- 2004-10-25 WO PCT/JP2004/015779 patent/WO2005042421A1/ja active Application Filing
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US20070272668A1 (en) * | 2006-05-25 | 2007-11-29 | Albelo Jeffrey A | Ultrashort laser pulse wafer scribing |
US8624157B2 (en) * | 2006-05-25 | 2014-01-07 | Electro Scientific Industries, Inc. | Ultrashort laser pulse wafer scribing |
US9221124B2 (en) | 2006-05-25 | 2015-12-29 | Electro Scientific Industries, Inc. | Ultrashort laser pulse wafer scribing |
TWI574767B (zh) * | 2014-07-29 | 2017-03-21 | Improved laser structure |
Also Published As
Publication number | Publication date |
---|---|
DE112004000581T5 (de) | 2006-02-23 |
JP4175636B2 (ja) | 2008-11-05 |
US7423237B2 (en) | 2008-09-09 |
KR20060030017A (ko) | 2006-04-07 |
DE112004000581B4 (de) | 2007-10-18 |
JP2005132694A (ja) | 2005-05-26 |
KR100699729B1 (ko) | 2007-03-28 |
US20060201983A1 (en) | 2006-09-14 |
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