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US 7,396,786 B2Granted
Glass and glass substrate having high dielectric constant
AssigneeKabushiki Kaisha Ohara
InventorsMasaaki Miyata, Kazuo Ohara
Life of this patent
Estimating the term…
Abstract
A glass containing 5 to 25 mass % of P2O5, 0 to 15 mass % of B2O3, 0 to 5 mass % of SiO2+GeO2, 21 to 50 mass % of BaO+SrO, 0 to 3 mass % of Li2O+Na2O+K2O, and 35 to 65 mass % of Nb2O5, not substantially containing PbO, satisfying Nb2O5/(BaO+SrO)=0.85 to 2.20, having a dielectric constant of 15 or greater, a dielectric loss of 10.0×10−4 or less, and a resistivity of 1.0×1016 Ω·cm or more.
Claims18
A glass comprising following components by mass %:
- P2O5
- 5-25%
- BaO + SrO
- 21-50%
- Nb2O5
- 35-65%
- Li2O + Na2O + K2O
- 0-3%,
- wherein Nb2O5/(BaO + SrO) is 0.85-2.20.
- wherein Nb2O5/(BaO+SrO) is 0.85-2.20.
7 more elements
A glass comprising following components by mass %:
- P2O5
- 5-25%
- B2O3
- 0-15%
- SiO2 + GeO2
- 0-5%
- BaO + SrO
- 21-50%
- MgO + CaO
- 0-25%
- Nb2O5
- 35-65%
- TiO2
- 0-15%
- Ta2O5
- 0-15%
- Bi2O3
- 0-15%
- ZnO
- 0-15%
- WO3
- 0-15%
- Y2O3 + La2O3 + Gd2O3
- 0-15%
- Li2O + Na2O + K2O
- 0-3%
- Al2O3
- 0-5%
- Sb2O3
- 0-0.5%,
- wherein Nb2O5/(BaO + SrO) is 0.85-2.20.
28 more elements
A glass comprising following components by mass %;
- P2O5
- 5-20%
- B2O3
- 0-10%
- SiO2 + GeO2
- 0-5%
- BaO
- 21-50%
- MgO + CaO
- 0-25%
- Nb2O5
- 35-65%
- TiO2
- 0-15%
- Ta2O5
- 0-15%
- Bi2O3
- 0-15%
- ZnO
- 0-15%
- WO3
- 0-15%
- Y2O3 + La2O3 + Gd2O3
- 0-15%
- Li2O + Na2O + K2O
- 0-3%
- Al2O3
- 0-5%
- Sb2O3
- 0-0.5%
- wherein Nb2O5/(BaO + SrO) is 0.85-2.20.
28 more elements
Dependencies are inferred from the claim text.