Eliminating silver migration in EL lamps

Details Eliminating silver migration in EL lamps Eliminating silver migration in EL lamps

2007-04-05

2009-10-27

Macchiarolo, Peter J (Department: 2879)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C313S503000

Reexamination Certificate

active

07609004

ABSTRACT:
A net negative charge is used to eliminate silver migration in an EL lamp. An electrode containing silver, either the entire electrode, a bus bar on the electrode, or a contact area on the electrode, receives a net negative charge while the EL lamp is being driven with alternating current. The net negative charge can be provided by the driver itself or by a current source, such as a battery or a charged capacitor; or by asymmetric current means in the current path of the EL lamp, including the lamp itself.

REFERENCES:
patent: 4853594 (1989-08-01), Thomas
patent: 5347198 (1994-09-01), Kimball
patent: 6038153 (2000-03-01), Andersson et al.
patent: 7141825 (2006-11-01), Horio et al.
patent: 2006/0091787 (2006-05-01), Kabay et al.

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