Laser etching of electroluminescent lamp electrode structures, a

Details Laser etching of electroluminescent lamp electrode structures, a Laser etching of electroluminescent lamp electrode structures, a

1998-06-04

2000-05-23

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

21912176, 2191218, 313506, B23K 2600, H05B 3312, H05B 3322

Patent

active

06066830&

ABSTRACT:
A process for manufacturing electroluminescent lamps using a laser beam to remove a material layer of a multi-layer material structure, in which the laser beam has a first energy level directed at a first material layer, e.g., a conductor, laid over a second material layer, e.g., an insulator/substrate. The laser beam is moved in an overlapping fashion such as spiral pattern motion across the first material layer. A part of the first material layer is sublimed exposing a region of the second material under the area where the spiral pattern was applied. Additionally, a second laser beam having a second energy level, e.g., higher than the first energy level, is moved along a path over the exposed second material layer subliming the remaining underlying layers to form the final lamp shape.

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