IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0016301
(2001-10-30)
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발명자
/ 주소 |
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| 출원인 / 주소 |
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
11 인용 특허 :
34 |
초록
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A glass composition suitable for manufacturing plasma displays and large-area displays using the fusion draw process is provided. The glass composition includes 59-66 mol % SiO 2 , 14.5-18.0 mol % Al 2 O 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O, 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-3
A glass composition suitable for manufacturing plasma displays and large-area displays using the fusion draw process is provided. The glass composition includes 59-66 mol % SiO 2 , 14.5-18.0 mol % Al 2 O 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O, 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-3.0 mol % SrO, 0.0-3.0 mol % BaO, and 0.0-5.0 mol % MgO+SrO+BaO.
대표청구항
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1. A glass composition comprising 59-66 mol % SiO 2 , 14.5-18.0 mol % Al 2 O 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O, 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-3.0 mol % SrO, 0.0-3.0 mol % BaO, 0.0-5.0 mol % MgO+SrO+BaO, and 0.0-0.45 mol % B 2 O 3 , the glass composition having a linea
1. A glass composition comprising 59-66 mol % SiO 2 , 14.5-18.0 mol % Al 2 O 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O, 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-3.0 mol % SrO, 0.0-3.0 mol % BaO, 0.0-5.0 mol % MgO+SrO+BaO, and 0.0-0.45 mol % B 2 O 3 , the glass composition having a linear coefficient of thermal expansion of 80 to 95×10 −7 /° C. over a temperature range of 25 to 300° C. 2. The glass composition of claim 1 having a liquidus temperature of 1100° C. or less. 3. The glass composition of claim 1 having a viscosity at a liquidus temperature of at least 10 5 poise. 4. The glass composition of claim 1 having a viscosity at a liquidus temperature in excess of 4×10 5 poise. 5. The glass composition of claim 1 having a linear coefficient of thermal expansion of 87 to 92×10 −7 /° C. over a temperature range of 25 to 300° C. 6. The glass composition of claim 1 having a strain point greater than 580° C. 7. The glass composition of claim 6 having a strain point of at least 640° C. 8. The glass composition of claim 1 further comprising at least one oxide selected from the group consisting of P 2 O 5 , Li 2 O, Y 2 O 3 , La 2 O 3 , and ZnO in a total amount not exceeding 5 mol %. 9. The glass composition of claim 1 wherein a molar ratio of Na 2 O to K 2 O is approximately 1.0. 10. The glass composition of 1 claim wherein a molar ratio of Na 2 O to K 2 O is in a range from 1.2 to 3.0. 11. The glass composition of claim 1 comprising 60-65 mol % SiO 2 , 15.5-17.0 mol % Al 2 O 3 , 9.5-11.0 mol % Na 2 O, 3.5-5.5 mol % K 2 O, 3.5-8.0 mol % CaO, 0.0-2.0 mol % MgO, 0.0-2.0 mol % SrO, 0.0-2.0 mol % BaO, and 0.0-3.0 mol % MgO+SrO+BaO. 12. The glass composition of claim 1 further comprising at least one oxide selected from the group consisting of P 2 O 5 , Li 2 O, Y 2 O 3 , La 2 O 3 , and ZnO in a total amount not exceeding 3 mol %. 13. A glass composition comprising 59-66 mol % SiO 2 , 15.0-18.0 % Al 2 O 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-3.0 mol % SrO, 0.0-3.0 mol % BaO, and 0.0-0.45 mol % B 2 O 3 , the glass composition exhibiting a linear coefficient of thermal expansion of 80 to 95×10 −7 /° C. over a temperature range of 25 to 300° C. 14. The glass composition of claim 13, wherein MgO+SrO+BaO are present in a total amount of 0-5 mol %. 15. The glass composition of claim 13, comprising 60-65 mol % SiO 2 , 15.5-17.0 mol % Al 2 O 3 , 9.5-11.0 mol % Na 2 O, 3.5-5.5 mol % K 2 O, 3.5-8.0 mol % CaO, 0.0-2.0 mol % MgO, 0.0-2.0 mol % SrO, and 0.0-2.0 mol % BaO. 16. The glass composition of claim 15, wherein MgO+SrO+BaO are present in a total amount of 0-3 mol %. 17. A glass substrate for an electronic display device, comprising 59-66 mol % SiO 2 , 15.0-18.0 mol % Al 2 O 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O, 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-3.0 mol % SrO, 0.0-3.0 mol % BaO, 0.0-5.0 mol % MgO+SrO+BaO, and 0.0-0.45 mol % B 2 O 3 , the glass composition exhibiting a linear coefficient of thermal expansion of 80 to 95×10 −7 /° C. over a temperature range of 25 to 300° C. 18. A glass substrate for an electronic display device, comprising:a flat, transparent glass exhibiting a strain point of at least 640° C. and a linear coefficient of thermal expansion of 80 to 95×10 −7 /° C. over a temperature range of 25 to 300C., the glass comprising 59-66 mol % SiO 2 , 14.5-18.0 mol % Al 2 O 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O, 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-0.3 mol % SrO, 0.0-3.0 mol % BaO, 0.0-5.0 mol % MgO+SrO+BaO, and 0.0-0.45 mol % B 2 O 3 . 19. A method of producing a glass panel for an electronic device, comprising:melting a glass batch comprising 59-66 mol % SiO 2 , 15.0-18.0 mol % Al 2 3 , 8.5-12.0 mol % Na 2 O, 2.5-6.5 mol % K 2 O, 2.5-9.0 mol % CaO, 0.0-3 .0 mol % MgO, 0.0-3.0 mol % SrO, 0.0-3.0 mol % BaO, 0.0-5.0 mol % MgO+SrO+BaO, and 0.0-0.45 mol % B 2 O 3 ; anddrawing a thin sheet of molten glass from the melt, the thin sheet exhibiting a linear coefficient of thermal expansion of 80 to 95×10 −7 /° C. over a temperature range of 25 to 300° C. 20. The method of claim 19, wherein the glass sheet is drawn by the fusion draw process.
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