Glass composition for bonding a phosphor and a fluorescent lamp
US5665660A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1996 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Jan 2, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/302
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The object of the present invention is to provide a glass composition which has a sufficient bonding strength for bonding a fluorescent film with a glass tube, does not hinder decomposition of the binder and is effective as an adhesive material, and to provide a fluorescent lamp using the glass composition. The object can be achieved by a glass composition, represented by the general formula, EQU xMO.yB.sub.2 O.sub.3.zM'.sub.2 O.sub.3.uM"O.sub.2.vM'".sub.2 O.sub.5 in which M is at least one element of Mg, Ca, Sr, Ba and Zn, M' is at least one element of Al, Sc, Y and lanthanoid elements, M" is at least one element of Ti, Zr, Hf, Th and Si, M'" is at least one element of Nb and Ta, x, y, z, u and v satisfy the relationships of 0<x.ltoreq.70, 15.ltoreq.y.ltoreq.80, 0.ltoreq.z.ltoreq.50, 0.ltoreq.u.ltoreq.30, 0.ltoreq.v.ltoreq.30, 0.5.ltoreq.u+v.ltoreq.50 and x+y+z+u+v=100, represented by mol %, and by a fluorescent lamp, in which the glass composition is incorporated in a phosphor layer in a proportion of 0.1 to 10 weight %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.