KR20130135943A - 강화 유리 기판 및 그 제조방법 - Google Patents
강화 유리 기판 및 그 제조방법 Download PDFInfo
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- KR20130135943A KR20130135943A KR1020137026723A KR20137026723A KR20130135943A KR 20130135943 A KR20130135943 A KR 20130135943A KR 1020137026723 A KR1020137026723 A KR 1020137026723A KR 20137026723 A KR20137026723 A KR 20137026723A KR 20130135943 A KR20130135943 A KR 20130135943A
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- glass substrate
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- compressive stress
- stress value
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- 239000000758 substrate Substances 0.000 title claims abstract description 133
- 239000005341 toughened glass Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims description 35
- 230000008569 process Effects 0.000 title claims description 10
- 238000006124 Pilkington process Methods 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims description 81
- 238000005342 ion exchange Methods 0.000 claims description 43
- 239000000203 mixture Substances 0.000 claims description 21
- 238000005498 polishing Methods 0.000 claims description 20
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 17
- 230000002787 reinforcement Effects 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000005728 strengthening Methods 0.000 claims description 15
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 12
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 10
- 239000006059 cover glass Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 19
- 230000007423 decrease Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 11
- 229910010413 TiO 2 Inorganic materials 0.000 description 10
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 10
- 238000004031 devitrification Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000003426 chemical strengthening reaction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000005816 glass manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229920001690 polydopamine Polymers 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006991 platinum ball pulling-up method Methods 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007088 Archimedes method Methods 0.000 description 1
- -1 B 2 O 3 Inorganic materials 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
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
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
-
- 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
- C03C4/00—Compositions for glass with special properties
- C03C4/18—Compositions for glass with special properties for ion-sensitive glass
-
- 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
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
-
- 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
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31—Surface property or characteristic of web, sheet or block
- Y10T428/315—Surface modified glass [e.g., tempered, strengthened, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims (14)
- 플로트법으로 성형되어서 이루어지는 강화 유리 기판에 있어서,
바텀면의 압축 응력값은 탑면의 압축 응력값보다 큰 것을 특징으로 하는 강화 유리 기판. - 제 1 항에 있어서,
ΔCS(바텀면의 압축 응력값-탑면의 압축 응력값)는 5∼39㎫인 것을 특징으로 하는 강화 유리 기판. - 제 1 항 또는 제 2 항에 있어서,
휨률은 0.20% 미만인 것을 특징으로 하는 강화 유리 기판. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
유리 조성으로서 질량%로 SiO2 40∼71%, Al2O3 7∼21%, Li2O 0∼1%, Na2O 7∼20%, K2O 0∼15%를 함유하는 것을 특징으로 하는 강화 유리 기판. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
이온 교환에 의해 강화되어서 이루어지는 것을 특징으로 하는 강화 유리 기판. - 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
응력 두께는 10㎛ 이상인 것을 특징으로 하는 강화 유리 기판. - 제 1 항 내지 제 6 항 중 어느 한 항에 있어서,
내부 인장 응력은 200㎫ 이하인 것을 특징으로 하는 강화 유리 기판. - 제 1 항 내지 제 7 항 중 어느 한 항에 있어서,
판 두께는 1.0㎜ 이하인 것을 특징으로 하는 강화 유리 기판. - 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,
액상점도는 104.0dPa·s 이상인 것을 특징으로 하는 강화 유리 기판. - 제 1 항 내지 제 9 항 중 어느 한 항에 있어서,
디스플레이의 커버 유리로서 사용되는 것을 특징으로 하는 강화 유리 기판. - 플로트법으로 성형되어서 이루어지는 강화용 유리 기판에 있어서,
440℃의 KNO3 용융염에 6시간 침지했을 때에 바텀면의 압축 응력값이 탑면의 압축 응력값보다 커지는 것을 특징으로 하는 강화용 유리 기판. - 플로트법으로 성형되어서 이루어지는 강화용 유리 기판에 있어서,
440℃의 KNO3 용융염에 6시간 침지했을 때에 휨률이 0.20% 미만이 되는 것을 특징으로 하는 강화용 유리 기판. - 플로트법으로 판 형상으로 성형하여 강화용 유리 기판을 얻는 성형 공정과,
강화용 유리 기판의 탑면 및/또는 바텀면을 연마하는 연마 공정과,
강화용 유리 기판을 이온 교환 처리하여 바텀면의 압축 응력값을 탑면의 압축 응력값보다 크게 하는 강화 공정을 갖는 것을 특징으로 하는 강화 유리 기판의 제조방법. - 제 13 항에 있어서,
상기 연마 공정은 탑면만을 연마하는 공정, 또는 탑면 및 바텀면을 연마하고 또한, 탑면의 연마 두께가 바텀면의 연마 두께보다 커지는 공정인 것을 특징으로 하는 강화 유리 기판의 제조방법.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPJP-P-2011-188401 | 2011-08-31 | ||
| JP2011188401A JP5835654B2 (ja) | 2011-08-31 | 2011-08-31 | 強化ガラス基板の製造方法 |
| PCT/JP2012/071884 WO2013031855A1 (ja) | 2011-08-31 | 2012-08-29 | 強化ガラス基板及びその製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20130135943A true KR20130135943A (ko) | 2013-12-11 |
| KR101534178B1 KR101534178B1 (ko) | 2015-07-06 |
Family
ID=47756335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020137026723A Active KR101534178B1 (ko) | 2011-08-31 | 2012-08-29 | 강화 유리 기판 및 그 제조방법 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9156726B2 (ko) |
| JP (1) | JP5835654B2 (ko) |
| KR (1) | KR101534178B1 (ko) |
| CN (1) | CN103476728B (ko) |
| TW (1) | TWI542559B (ko) |
| WO (1) | WO2013031855A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210130293A (ko) * | 2020-04-21 | 2021-11-01 | 삼성디스플레이 주식회사 | 유리 제품 및 그 제조 방법 |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9187365B2 (en) * | 2013-02-25 | 2015-11-17 | Corning Incorporated | Methods for measuring the asymmetry of a glass-sheet manufacturing process |
| JP6311704B2 (ja) * | 2013-04-03 | 2018-04-18 | 旭硝子株式会社 | 建築窓用複層ガラス |
| CN105164081B (zh) * | 2013-05-24 | 2019-07-26 | 日本电气硝子株式会社 | 强化玻璃板的制造方法 |
| WO2014189118A1 (ja) * | 2013-05-24 | 2014-11-27 | 日本電気硝子株式会社 | 強化ガラス板の製造方法 |
| US9938178B2 (en) | 2013-08-15 | 2018-04-10 | Corning Incorporated | Methods of manufacturing glass articles using anisothermal temperature profiles |
| US10273184B2 (en) | 2013-10-14 | 2019-04-30 | Corning Incorporated | Ion exchange processes and chemically strengthened glass substrates resulting therefrom |
| US10442730B2 (en) | 2013-11-25 | 2019-10-15 | Corning Incorporated | Method for achieving a stress profile in a glass |
| JP2017210375A (ja) * | 2014-10-07 | 2017-11-30 | 旭硝子株式会社 | 積層板および積層板の製造方法 |
| JP2016169143A (ja) * | 2015-03-10 | 2016-09-23 | 旭硝子株式会社 | 化学強化ガラス |
| TWI596071B (zh) * | 2015-08-25 | 2017-08-21 | 友達光電股份有限公司 | 顯示面板與其製作方法 |
| JP6066382B2 (ja) * | 2015-09-15 | 2017-01-25 | 日本電気硝子株式会社 | 強化フロートガラス基板及びその製造方法 |
| WO2017116907A1 (en) * | 2015-12-29 | 2017-07-06 | Corning Incorporated | Asymmetric processing method for reducing bow in laminate structures |
| FR3050990B1 (fr) * | 2016-05-03 | 2018-05-18 | Saint-Gobain Glass France | Faconnage de verre apres trempe |
| CN107200469A (zh) * | 2017-06-23 | 2017-09-26 | 四川旭虹光电科技有限公司 | 高透光性玻璃板 |
| US20230416144A1 (en) * | 2017-10-17 | 2023-12-28 | PGBC Intellectual Holdings, LLC | Chemically-strengthened thin glass substrates new paradigms for modified curvature and methods of manufacture |
| WO2020018432A1 (en) | 2018-07-16 | 2020-01-23 | Corning Incorporated | Glass substrates including uniform parting agent coatings and methods of ceramming the same |
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| JP4656863B2 (ja) * | 2003-06-06 | 2011-03-23 | Hoya株式会社 | ジルコニウムを含むガラス組成物、化学強化ガラス物品、磁気記録媒体用ガラス基板、およびガラス板の製造方法 |
| US7273668B2 (en) | 2003-06-06 | 2007-09-25 | Hoya Corporation | Glass composition including zirconium, chemically strengthened glass article, glass substrate for magnetic recording media, and method of producing glass sheet |
| JP2006083045A (ja) | 2004-09-17 | 2006-03-30 | Hitachi Ltd | ガラス部材 |
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| JP5867953B2 (ja) | 2008-06-27 | 2016-02-24 | 日本電気硝子株式会社 | 強化ガラスおよび強化用ガラス |
| KR101245278B1 (ko) * | 2009-08-07 | 2013-03-19 | 주식회사 엘지화학 | 전도성 기판 및 이의 제조 방법 |
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| US8950215B2 (en) * | 2010-10-06 | 2015-02-10 | Apple Inc. | Non-contact polishing techniques for reducing roughness on glass surfaces |
| US8835007B2 (en) * | 2011-01-19 | 2014-09-16 | Nippon Electric Glass Co., Ltd. | Tempered glass and tempered glass sheet |
| US20120196110A1 (en) * | 2011-01-19 | 2012-08-02 | Takashi Murata | Tempered glass and tempered glass sheet |
| KR20140033146A (ko) * | 2011-07-01 | 2014-03-17 | 아사히 가라스 가부시키가이샤 | 화학 강화용 플로트 유리 |
| US9988304B2 (en) * | 2011-09-02 | 2018-06-05 | Guardian Glass, LLC | Method of strengthening glass by plasma induced ion exchanges in connection with tin baths, and articles made according to the same |
-
2011
- 2011-08-31 JP JP2011188401A patent/JP5835654B2/ja active Active
-
2012
- 2012-08-29 KR KR1020137026723A patent/KR101534178B1/ko active Active
- 2012-08-29 CN CN201280018629.8A patent/CN103476728B/zh active Active
- 2012-08-29 WO PCT/JP2012/071884 patent/WO2013031855A1/ja not_active Ceased
- 2012-08-29 US US14/241,125 patent/US9156726B2/en active Active
- 2012-08-30 TW TW101131573A patent/TWI542559B/zh active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210130293A (ko) * | 2020-04-21 | 2021-11-01 | 삼성디스플레이 주식회사 | 유리 제품 및 그 제조 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201321325A (zh) | 2013-06-01 |
| JP5835654B2 (ja) | 2015-12-24 |
| TWI542559B (zh) | 2016-07-21 |
| WO2013031855A1 (ja) | 2013-03-07 |
| US9156726B2 (en) | 2015-10-13 |
| KR101534178B1 (ko) | 2015-07-06 |
| JP2013049603A (ja) | 2013-03-14 |
| CN103476728A (zh) | 2013-12-25 |
| US20140212649A1 (en) | 2014-07-31 |
| CN103476728B (zh) | 2016-04-06 |
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