Glasses for display panels and photovoltaic devices
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-009/00
C03C-003/087
C03C-003/076
출원번호
US-0141286
(2002-05-08)
발명자
/ 주소
Kohli,Jeffrey T.
출원인 / 주소
Corning Incorporated
인용정보
피인용 횟수 :
19인용 특허 :
21
초록
An aluminosilicate glass having a composition consisting essentially of, as calculated in weight percent on an oxide basis, of 58-70% SiO2, 12-22% Al2O3, 3-15% B2O 3, 2-12% CaO, 0-3% SrO, 0-3% BaO, 0-8% MgO, 10-25% MCSB (i.e., MgO+ CaO+SrO+BaO), and SrO and BaO in combination being less than 3%.
대표청구항▼
What is claimed is: 1. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7/째 C. and a strain point over 600째 C.
What is claimed is: 1. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7/째 C. and a strain point over 600째 C. 650째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70% SiO2 , 12-22% Al2O3, 3 5-15% B2O3, 2 5-12% CaO, 0-3% SrO, 0-3% BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 2. A substrate glass in accordance with claim 1 which wherein the glass is manufactured by the float process, said glass having a liquidus viscosity greater than about 50 MPa쨌s Pa쨌s (500 poises). 3. A substrate according to claim 2, wherein said glass has a CTE of 32-38횞10-7/째 C. and a strain point over 650째 C. 4. A substrate according to claim 3, wherein said glass has a strain point over 675째 C. 5. A substrate according to claim 3, wherein the combined SrO and BaO content of said glass is less than about 1 weight percent. 6. A substrate according to claim 3, wherein said glass is essentially free of SrO and BaO. 7. A flat panel display comprising a substrate in accordance with claim 1. 8. A substrate according to claim 1, wherein said glass consists essentially of a composition, as calculated in weight percent on an oxide basis, of 58-67%, SiO2, 15-20% Al2O3, 5-13% B2O3, 5-12% CaO, 0-3% SrO, 0-3% BaO, 0-8% MgO, and SrO and BaO in combination is less than 3 wt %. 9. A substrate according to claim 3, wherein said glass consists essentially of a composition, as calculated in weight percent on an oxide basis, of 58-67% SiO2, 15-20% Al2O3, 5-13% B2O3, 5-12% CaO, 0-3% SrO, 0-3% BaO, 1-8% MgO, and SrO and BaO in combination is less than 3 wt %. 10. A substrate according to claim 9, wherein said glass has a strain point over 675째 C. 11. A substrate according to claim 9, wherein the combined SrO and BaO content of said glass is less than about 1 weight percent. 12. A substrate according to claim 9, wherein the glass has a weight loss less than 5.0 mg/cm2 when immersed in 5% HCl at 95째 C. for one hour. 13. A substrate according to claim 1, wherein for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7/째 C. and a strain point over 600째 C., said glass consists essentially of an aluminosilicate having a composition, as calculated in weight percent on an oxide basis, of 58-64% SiO2, 16-19% Al2O3, greater than 6 and less than 13% B2O3, 5-11% CaO, 0-3% SrO, 0-3% BaO, 1-8% MgO, and SrO and BaO in combination being less than 3%. 14. A glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7/째 C. and a strain point over 600째 C. 650째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 12-22% Al2O3, 3 5-15% B2O3, 2 5-12% CaO, 0-3% SrO, 0-3% BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 15. A glass in accordance with claim 14 which is manufactured by the float process, said glass having a liquidus viscosity greater than about 50 MPa쨌s Pa쨌s (500 poises). 16. A glass according to claim 14, wherein said glass has a CTE of 32-38횞10-7/째 C. and a strain point over 650째 C. 17. A glass according to claim 16, wherein said glass has a strain point over 675째 C. 18. A photovoltaic device comprising a substrate in accordance with claim 1. 19. A substrate glass according to claim 14, wherein said glass consists essentially of a composition, as calculated in weight percent on an oxide basis, of 58-67% SiO2, 15-20% Al2O3, 5-13% B2O3, 5-12% CaO, 0-3% SrO, 0-3% BaO, 1-8% MgO, and SrO and BaO in combination is less than 3 wt %. 20. A substrate according to claim 1, wherein MgO+CaO+SrO+BaO is 10-25 greater than or equal to 10 and less than 23 weight percent. 21. A substrate according to claim 1, wherein MgO+CaO+SrO+BaO is 8.6-18.2 8.6-14.8 weight percent. 22. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10 -7/째 C. and a strain point of 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70 % SiO2, 12-22% Al2 O3, 6.5-15% B2 O3, 6-12% CaO, 0-1. 9% SrO, 0-3% BaO, 0-8% MgO, SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 23. A glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40 횞10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 12-22 % Al2O3, 6.5-15 % B2O3, 6-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 24. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70% SiO 2, 12-22% Al2O 3, 7.1-15% B2O 3, 6-12% CaO, 0-1.9 % SrO, 0-3% BaO, 0-8% MgO, SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 25. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 12-22 % Al2O3, 7.1-15 % B2O3, 6-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 26. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 60.5-70% SiO2, 12-22% Al2O 3, 7.1-15% B2O 3, 6.1-12% CaO, 0-1. 9% SrO, 0-3% BaO, 0-6 % MgO, SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 27. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 60.5-70% SiO2, 12- 22% Al2O3, 7.1-15% B2O3, 6.1-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-6% MgO, and SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 28. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70% SiO 2, 15-18.9% Al2 O3, 7.1-15% B2 O3, 6-12% CaO, 0-1. 9% SrO, 0-3% BaO, 0-8% MgO, SrO and BaO in combination being less than 3%. 29. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 15-18. 9% Al2O3, 7.1- 15% B2O3, 6-12 % CaO, 0-1.9% SrO, 0-3 % BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%. 30. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 60.5-70% SiO2, 15-18.9% Al 2O3, 7.1-15% B 2O3, 6.1-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-6% MgO, SrO and BaO in combination being less than 3%. 31. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 60.5-70% SiO2, 15- 18.9% Al2O3, 7. 1-15% B2O3, 6. 1-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-6% MgO, and SrO and BaO in combination being less than 3%. 32. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10 -7/째 C. and a strain point over 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70 % SiO2, 15-18.9% Al 2O3, 6.5-15% B 2O3, 6-12% CaO, 0- 1.9% SrO, 0-3% BaO, 0- 8% MgO, SrO and BaO in combination being less than 3 %. 33. A glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40 횞10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 15-18. 9% Al2O3, 6.5- 15% B2O3, 6-12 % CaO, 0-1.9% SrO, 0-3 % BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%. 34. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 25-300째 C. between 30-41.5횞 10-7/째 C. and a strain point over 650째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70% SiO2, 12-22% Al2O3, 3.8-15 % B2O3, 6-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-8% MgO, SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 35. A glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 25-300째 C. between 30-41 .5횞10-7/째 C. and a strain point over 650째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 12-22% Al2O3, 3. 8-15% B2O3, 6- 12% CaO, 0-1.9% SrO, 0- 3% BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%, said glass containing in addition to CaO, at least one of MgO, SrO, and BaO. 36. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 25-300째 C. between 30-41.5횞 10-7/째 C. and a strain point over 650째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70% SiO2, 15-18. 9% Al2O3, 3.8- 15% B2O3, 6-12 % CaO, 0-1.9% SrO, 0-3 % BaO, 0-8% MgO, SrO and BaO in combination being less than 3%. 37. A glass exhibiting a linear coefficient of thermal expansion (CTE) over the temperature range 25-300째 C. between 30-41 .5횞10-7/째 C. and a strain point over 650째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 15-18.9 Al2O3, 3. 8-15% B2O3, 6- 12% CaO, 0-1.9% SrO, 0- 3% BaO, 0-8% MgO, and SrO and BaO in combination being less than 3%. 38. A substrate according to claim 1 or 13, wherein the glass has a density of less than 2.50 g/cm3. 39. A glass according to claim 14, wherein the glass has a density of less than 2.50 g/cm3. 40. A substrate according to claim 1 or 13, wherein the glass has a liquidus temperature below about 1250째 C. 41. A glass according to claim 14, wherein the glass has a liquidus temperature below about 1250째 C. 42. A substrate according to claim 13, 22, 24, 26, 28, 30, 32, 48, 50, 52, or 54 wherein the glass has a strain point over 650째 C. 43. A glass according to claim 23, 25, 27, 29, 31, 33, 49, 51, 53, or 55 wherein the glass has a strain point over 650째 C. 44. A substrate in accordance with claim 1, 13, 22, 24, 26, 28, 30, 32, 34, 36, 48, 50, 52, or 54 wherein the glass is manufactured by the float process. 45. A glass in accordance with claim 14, 23, 25, 27, 29, 31, 33, 35, 37, 49, 51, 53, or 55 which is manufactured by the float process. 46. A flat panel display comprising a substrate in accordance with claim 13, 22, 24, 26, 28, 30, 32, 34, 36, 48, 50, 52, or 54. 47. A photovoltaic device comprising a substrate in accordance with claim 13, 22, 24, 26, 28, 30, 32, 34, 36, 48, 50, 52, or 54. 48. A substrate for a flat panel display or photovoltaic device wherein sad substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 58-70% SiO 2, 15-18.9% Al2 O3, 7.1-15% B2 O3, 6-12% CaO, 0-1. 9% SrO, 0-3% BaO, 0-8% MgO. 49. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 58-70% SiO2, 15-18. 9% Al2O3, 7.1- 15% B2O3, 6-12 % CaO, 0-1.9% SrO, 0-3 % BaO, 0-8% MgO. 50. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass consisting essentially of an aluminosilicate having a composition as calculated in weight percent on an oxide basis, of 60.5-70% SiO2, 15-18.9% Al 2O3, 7.1-15% B 2O3, 6.1-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-6% MgO. 51. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis, consisting essentially of 60.5-70% SiO2, 15- 18.9% Al2O3, 7. 1-15% B2O3, 6. 1-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-6% MgO. 52. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis that comprises 58-70% SiO 2, 15-18.9% Al2O 3, 7.1-15% B2O 3, 6-12% CaO, 0-1.9 % SrO, 0-3% BaO, 0-8% MgO. 53. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis that comprises 58-70% SiO2, 15-18.9% Al2O3, 7.1-15 % B2O3, 6-12% CaO, 0-1.9% SrO, 0-3% BaO, 0-8% MgO. 54. A substrate for a flat panel display or photovoltaic device wherein said substrate is comprised of a flat, transparent glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞10-7 /째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis that comprises 60.5-70% SiO 2, 15-18.9% Al2 O3, 7.1-15% B2 O3, 6.1-12% CaO, 0- 1.9% SrO, 0-3% BaO, 0- 6% MgO. 55. A glass exhibiting a density of less than 2.50 g/cm3, a linear coefficient of thermal expansion (CTE) over the temperature range 0-300째 C. between 30-40횞 10-7/째 C. and a strain point over 600째 C., said glass comprising an aluminosilicate having a composition as calculated in weight percent on an oxide basis that comprises 60. 5-70% SiO2, 15-18. 9% Al2O3, 7.1- 15% B2O3, 6.1- 12% CaO, 0-1.9% SrO, 0- 3% BaO, 0-6% MgO. 56. A substrate in accordance with claim 1, 13, 22, 24, 26, 28, 30, 32, 34, 36, 48, 50, 52, or 54 wherein the glass is essentially free of intentionally added alkali metal oxide. 57. A glass in accordance with claim 14, 23, 25, 27, 29, 31, 33, 35, 37, 49, 51, 53, or 55 wherein the glass is essentially free of intentionally added alkali metal oxide.
Dumbaugh ; Jr. William H. (Painted Post NY) Lapp Josef C. (Corning NY) Moffatt Dawne M. (Corning NY), High liquidus viscosity glasses for flat panel displays.
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