WO2004009504A1 - レーザ加工用ガラス - Google Patents
レーザ加工用ガラス Download PDFInfo
- Publication number
- WO2004009504A1 WO2004009504A1 PCT/JP2003/009227 JP0309227W WO2004009504A1 WO 2004009504 A1 WO2004009504 A1 WO 2004009504A1 JP 0309227 W JP0309227 W JP 0309227W WO 2004009504 A1 WO2004009504 A1 WO 2004009504A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- laser
- laser processing
- mol
- processing
- Prior art date
Links
Classifications
-
- 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
-
- 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
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0005—Other surface treatment of glass not in the form of fibres or filaments by irradiation
- C03C23/0025—Other surface treatment of glass not in the form of fibres or filaments by irradiation by a laser beam
-
- 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
Definitions
- the present invention relates to a laser processing glass capable of laser processing by laser beam irradiation, and more particularly to a laser processing glass having a composition suitable for laser processing.
- the processable length is now in the nanometer range, which is shorter than micrometer due to the development of patterning technology and shorter wavelength laser.
- Processing such as drilling using lasers is progressing from thermal processing to abrasion processing.
- Ablation is the phenomenon of irradiating a laser beam with a very narrow pulse width to cause the material at the irradiated part to transition from melting to evaporation in a short time.
- the degree of thermal influence on the beam irradiation area differs.
- Processing with an ultrashort pulse laser, in which the beam irradiation ends before thermal diffusion occurs enables precise and fine drilling with almost no heat-affected layer.
- the glass for laser processing manufactured by silver ion exchange has a large coefficient of thermal expansion because it contains a large amount of alkali metal alkaline earth metal.
- heat since heat is generated in the laser-irradiated part, stress is generated in the laser-irradiated part and its vicinity due to a difference in thermal expansion, and deformation occurs. If the coefficient of thermal expansion is large, the size of the processed part changes during and after laser irradiation, and the dimensional accuracy of the processed part may be degraded.
- the optical element has a small dimensional change caused by a temperature change.
- the dimensional change as described above causes a change in the characteristics of the optical element.
- an object of the present invention is to provide a glass for laser processing that has a low threshold value for laser processing and a small coefficient of thermal expansion.
- the glass for laser processing according to the present invention is characterized in that the composition satisfies the following conditions in a glass that can be laser-processed by abrasion or evaporation by absorbed laser light energy.
- FIG. 1 is a schematic diagram showing an optical system for measuring a laser processing threshold value according to one embodiment of the present invention.
- FIG. 2 is a diagram showing a composition range in which a uniform glass according to one embodiment of the present invention can be produced.
- the glass of the present invention can be processed by absorption or evaporation of the glass by the absorbed laser light energy.
- absorption refers to a phenomenon in which a laser beam having an extremely narrow pulse width is irradiated to shift the material at the irradiated portion from melting to evaporation within a short time.
- the glass composition of the present invention satisfies the following conditions.
- This glass for laser processing preferably contains titanium in the form of atoms, colloids or ions.
- Si0 2 or B 2 0 3 is a network-forming glass It is an oxide and forms a skeleton as glass. Si0 2 and so the total amount of B 2 0 3 7 9 exceeds mol%, the melting of the glass becomes difficult, the total content is preferably 7-9 mol%.
- Li 2 0 is a modified oxide, Na 2 0, LO, Rb 2 0, Cs 2 0, MgO, CaO, SrO or BaO, since partially breaking the network structure of the glass, the viscosity at a high temperature It is used to weaken or moderate the temperature gradient of viscosity.
- the total amount of the modified oxide is preferably 5 mol% or more.
- A1 2 0 3 or Ti0 2 is an intermediate oxide, a network forming oxide Si0 2 or the B 2 0 3, L i 2 0 is a modified oxide, Na.O, LO, Rb 2 0 , Depending on the balance of Cs 20 , MgO, CaO, SrO or BaO, it can be present in the glass either as a network-forming oxide or as a modifying oxide.
- Particularly Ti0 2 is a component required for lowering gastric value Ki processed by the laser, it is necessary to 5 mol% or more 2 0 mol% or less.
- Ti0 2 threshold is higher for connexion undesirable laser processing is less than 5 mol%. Also, Ti0 2 2 0 exceeds mol%, the thermal expansion coefficient is increased undesirably.
- the total content of the A 1 2 0 3 and Ti0 2 is be 2 0 mol% It is good.
- a composition that satisfies the above condition is particularly desirable from the viewpoints of both reducing the coefficient of thermal expansion and improving laser workability.
- a is the component [pi 0 2 required to lower the processing threshold by laser by a 1 0 mol% or more, it is possible to further improve the laser processability.
- Ti0 2 is larger than the Na 2 0 is a modified oxide
- T i or 1 5 mol% or less.
- S i 0 2 and a network forming oxide due to the B 2 0 3 of the total amount of 7 0 mol% or more, by the Na 2 0 is a modified oxide be 1 0 mol% or more to increase the good preferable.
- modifying oxide, at elevated temperature This is to reduce the viscosity of the material and to reduce the temperature gradient of the viscosity.
- the glass having the composition of the present invention described above the energy required for producing the phenomenon and performing the processing is small, and the processing threshold value is low.
- the glass for laser processing of the present invention does not modify the glass by ion exchange or the like, and melts the necessary composition by melting. It is substantially uniform in the thickness direction. For this reason, not only processing near the surface of the glass, but also processing inside the glass, such as forming a through hole in the glass plate, can be easily performed. In the above, “substantially uniform in the thickness direction” means that the glass composition is uniform enough to enable laser processing to the inside of the glass.
- the glass of the present invention the thermal expansion coefficient of 1 0 0 X 1 o - 7 ⁇ - 1 or less der Rukoto is preferred.
- the glass of the present invention uses ultraviolet light of Nd: YAG laser wavelengths of 2666 nm and 365 nm as laser light, a frequency of 20 Hz, a pulse width of 5 to 8 nm, and a focal length of 10 nm. Focusing with a 0 mm lens and irradiating the glass with the limit energy at which ablation occurs as the processing threshold value, the processing threshold value is 6 OmW or less at a wavelength of 266 nm, and 50 at a wavelength of 355 nm. It is preferable that it is 0 mW or less and the coefficient of thermal expansion is 100 0 X 1 ⁇ - 7 ⁇ -1 or less.
- the raw materials were blended so that the glass to be produced was 200 g. After transferring this to a platinum crucible, it was put into a melting furnace heated to about 150 ° C. and held for 6 hours. During this 6 hours, stirring was performed several times. Casting is performed by pouring glass onto an iron plate, immediately put into a lehr where the temperature has been raised to about 500 ° C, and after maintaining at a predetermined temperature for 30 minutes, gradually cooling to room temperature over 16 hours did. The glass block thus obtained was cut and polished by a general method to prepare a glass sample for laser processing having a plate-like and smooth surface. (2) Measurement of processing threshold value by laser irradiation
- the processing of the glass substrate by laser light irradiation was performed as follows using a laser light irradiation device 1 as shown in FIG.
- the laser light 10 emitted from the laser light source 12 is squeezed by a lens (not shown) and irradiates the glass sample 20 fixed to the sample holder 22 on the sample stage 24.
- the attenuator 50 is a device for changing the energy of the laser light passing therethrough, and the energy of the passing laser light 10 can be adjusted by operating a microscope (not shown). .
- the glass sample 20 is irradiated with the laser beam 10 whose energy has been adjusted by the Athens 50.
- the sample stage 24 is a stage that can be freely moved three-dimensionally, with one axis parallel to the optical axis of the laser beam 10 and two axes in a plane perpendicular to the optical axis of the laser beam 10. It is.
- the movement of the sample stage 24 can be performed by an electric signal, and can be controlled as predetermined.
- the sample holder 22 can be freely tilted with respect to the optical axis direction of the laser beam 10.
- the type of laser light 10 can be changed by changing the laser light source 12 so that the third harmonic (wavelength: 355 nm), the fourth harmonic (wavelength: 266 nm), and KrF of the Nd: YAG laser Excimer laser (wavelength 248 nm) laser light can be selected.
- the diameter or size of the laser beam was changed by inserting a mask (not shown) on the optical axis near the glass sample 20 as necessary.
- the measurement of the processing threshold value by the laser was performed as follows.
- the laser light 10 ultraviolet light having a wavelength of Nd: YAG laser at 2666 nm and 365 nm was used.
- the repetition frequency of this laser is 20 Hz and the pulse width is 5-8 nm.
- the laser beam 10 is focused by a 100 mm focal length lens (not shown) and fixed to the sample holder 22 on the sample stage 24
- the irradiated glass sample 20 was irradiated.
- the irradiation time was controlled at 30 on the irradiation shirt, and was set to 2 seconds.
- the energy of the laser beam 10 was measured with the irradiation shirt 30 closed and a power meter 40 inserted into the optical path of the laser beam 10.
- the sample was irradiated with this energy while changing it variously in Athens 50, and the limit energy at which abrasion occurred was determined and used as the processing threshold.
- the laser light source 12 Since the laser light source 12 generates a high energy beam, it can be remotely operated to ensure safety, and the power supply / cooling water supply device 14 for the laser light source 12 is operated by the remote controller 16. Although not specifically shown, the laser light source 12 itself also has a built-in shirt and can be operated remotely. The laser beam transmitted through the glass sample 20 is absorbed by the beam damper 18.
- compositions of Examples 1 to 12 of the glass for laser processing of the present invention are as shown in Table 1.
- the composition of each component is in the following range.
- T i0 2 is essential to contain 5 to 2 0 mole%.
- Modified oxide ( 20 , ⁇ 20 , 1 ( 20 , 3 ⁇ 4 ⁇ 0, & 0, 3] "0, 8 & 0): 5 to 20 mol%
- the glass for laser processing of the present invention has a small amount of impurities. Excluding, it consists essentially of the above composition only.
- Figure 2 for the various compositions which we have tested, by plotting the relationship between A1 2 0 3 and Ti0 2 in a total amount of the Na 2 0 in the amount shows a vitrified state of each composition. From the figure, it can be seen that if the amount of the modified oxide typified by Na 20 is too small, phase separation and devitrification occur, so that a uniform glass cannot be produced. That is, as shown in Fig. 2, to produce a uniform glass,
- Comparative Example 1 is a so-called soda-lime glass used for a normal window glass or the like.
- the maximum power is 1.10 W when the wavelength of the laser beam is 266 nm, and the maximum power when the wavelength of the laser beam is 365 nm 2. Neither abrasion nor evaporation occurred at any of the 10 W, and there was no change in the sample.
- Ti0 2 or processing threshold is a composition in which the concentration of A1 2 0 3 does not contain or or very low intermediate oxide becomes extremely high.
- Comparative Example 2 As shown in Table 1, a material containing a high concentration of both exceeding 20 mol% of Na 2 0 of Ti0 2 with the modified oxide of the intermediate oxide.
- the processing threshold value was determined in the same manner as in the example, the laser light wavelength was extremely low, 15 mW at 266 nm, and the laser light wavelength was 20 OmW at 365 nm.
- the glass of the composition of the present example had a coefficient of thermal expansion of less than 100 X 1 o- ⁇ c- 1
- the glass of the composition of the comparative example had a coefficient of thermal expansion of 1 1 8 X 1 O— ⁇ C— 1
- a laser processing glass having a low laser processing threshold value and a small thermal expansion coefficient can be provided. That is, the glass for laser processing of the present invention requires less laser light energy for processing and is less affected by heat, so that more precise processing can be performed.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10392962T DE10392962T5 (de) | 2002-07-24 | 2003-07-22 | Glas zur Laser-Behandlung |
US10/522,046 US7399721B2 (en) | 2002-07-24 | 2003-07-22 | Glass for laser processing |
AU2003281628A AU2003281628A1 (en) | 2002-07-24 | 2003-07-22 | Glass capable of being machined by laser |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002214983 | 2002-07-24 | ||
JP2002-214983 | 2002-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004009504A1 true WO2004009504A1 (ja) | 2004-01-29 |
Family
ID=30767906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/009227 WO2004009504A1 (ja) | 2002-07-24 | 2003-07-22 | レーザ加工用ガラス |
Country Status (4)
Country | Link |
---|---|
US (1) | US7399721B2 (ja) |
AU (1) | AU2003281628A1 (ja) |
DE (1) | DE10392962T5 (ja) |
WO (1) | WO2004009504A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100453484C (zh) * | 2006-03-21 | 2009-01-21 | 武汉理工大学 | 一种在内部能形成紫红色立体图案的无色透明玻璃材料的制备方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4041298B2 (ja) * | 2001-10-05 | 2008-01-30 | 日本板硝子株式会社 | レーザ光照射によるガラスの加工方法 |
DE102006029073B4 (de) * | 2005-07-06 | 2009-07-16 | Schott Ag | Verfahren zum Durchtrennen eines Flachglases unter Verwendung eines Lasertrennstrahls und alkalifreies Flachglas mit besonderer Eignung hierfür |
JP5318748B2 (ja) * | 2007-02-22 | 2013-10-16 | 日本板硝子株式会社 | 陽極接合用ガラス |
DE102009008953B4 (de) * | 2009-02-13 | 2010-12-30 | Schott Ag | Röntgenopakes bariumfreies Glas und dessen Verwendung |
DE102009008951B4 (de) * | 2009-02-13 | 2011-01-20 | Schott Ag | Röntgenopakes bariumfreies Glas und dessen Verwendung |
US8647995B2 (en) | 2009-07-24 | 2014-02-11 | Corsam Technologies Llc | Fusion formable silica and sodium containing glasses |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4444893A (en) * | 1982-06-11 | 1984-04-24 | Schott Glass Technologies, Inc. | Highly refractive, low dispersion, low density optical glass suitable for corrective lenses |
DE4306004A1 (en) * | 1992-03-19 | 1993-09-23 | Horst Hans Juergen | Silicate glass suitable for working with short wave solid body lasers - contains iron oxide and opt. vanadium and titanium oxide(s) |
WO1997035813A1 (en) * | 1996-03-25 | 1997-10-02 | Nippon Sheet Glass Co., Ltd. | Laser-processable glass substrate and laser processing method |
US20030100431A1 (en) * | 2001-10-05 | 2003-05-29 | Hirotaka Koyo | Glass for laser processing |
JP2003246638A (ja) * | 2002-02-22 | 2003-09-02 | Nippon Sheet Glass Co Ltd | ガラス構造物およびその製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4367919A (en) * | 1977-08-01 | 1983-01-11 | Minnesota Mining And Manufacturing Company | Durable glass elements |
US4567104A (en) * | 1983-06-24 | 1986-01-28 | Canyon Materials Research & Engineering | High energy beam colored glasses exhibiting insensitivity to actinic radiation |
US5039631A (en) * | 1990-01-11 | 1991-08-13 | Schott Glass Technologies, Inc. | Strengthenable, high non-nd lanthanoid-containing glasses |
JP2565813B2 (ja) * | 1991-07-05 | 1996-12-18 | 株式会社オハラ | 光学ガラス |
US6562523B1 (en) * | 1996-10-31 | 2003-05-13 | Canyon Materials, Inc. | Direct write all-glass photomask blanks |
DE19917921C1 (de) * | 1999-04-20 | 2000-06-29 | Schott Glas | Gläser und Glaskeramiken mit hohem spezifischen E-Modul und deren Verwendung |
JP2002265233A (ja) * | 2001-03-05 | 2002-09-18 | Nippon Sheet Glass Co Ltd | レーザ加工用母材ガラスおよびレーザ加工用ガラス |
DE10141101C1 (de) * | 2001-08-22 | 2003-07-03 | Schott Glas | Optische Farbgläser, ihre Verwendung und Verfahren zu ihrer Herstellung |
-
2003
- 2003-07-22 WO PCT/JP2003/009227 patent/WO2004009504A1/ja active Application Filing
- 2003-07-22 AU AU2003281628A patent/AU2003281628A1/en not_active Abandoned
- 2003-07-22 DE DE10392962T patent/DE10392962T5/de not_active Ceased
- 2003-07-22 US US10/522,046 patent/US7399721B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4444893A (en) * | 1982-06-11 | 1984-04-24 | Schott Glass Technologies, Inc. | Highly refractive, low dispersion, low density optical glass suitable for corrective lenses |
DE4306004A1 (en) * | 1992-03-19 | 1993-09-23 | Horst Hans Juergen | Silicate glass suitable for working with short wave solid body lasers - contains iron oxide and opt. vanadium and titanium oxide(s) |
WO1997035813A1 (en) * | 1996-03-25 | 1997-10-02 | Nippon Sheet Glass Co., Ltd. | Laser-processable glass substrate and laser processing method |
US20030100431A1 (en) * | 2001-10-05 | 2003-05-29 | Hirotaka Koyo | Glass for laser processing |
JP2003246638A (ja) * | 2002-02-22 | 2003-09-02 | Nippon Sheet Glass Co Ltd | ガラス構造物およびその製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100453484C (zh) * | 2006-03-21 | 2009-01-21 | 武汉理工大学 | 一种在内部能形成紫红色立体图案的无色透明玻璃材料的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
AU2003281628A1 (en) | 2004-02-09 |
DE10392962T5 (de) | 2005-08-18 |
US20050233889A1 (en) | 2005-10-20 |
US7399721B2 (en) | 2008-07-15 |
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