Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1997-05-29
1998-08-11
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313489, H01J 6142
Patent
active
057931585
ABSTRACT:
A gas discharge display panel incorporating phosphor protected by undercoats and overcoats. The device is comprised of a pair of substrates, each of which has an electrode array thereon with the dielectric coating on at least one of the electrode arrays. An array of channels having sidewalls is formed in the dielectric layer with an array of channels corresponding to and aligned with one of the electrode arrays. The channels have sidewalls and lands between channels with a protective undercoat on the channel sidewalls and a photoluminescent phosphor on the protective undercoat. Due to the sloping nature of the sidewalls and the photoluminescent phosphors being sandwiched between the protective undercoat and overcoat and the channel walls in which the phosphor is placed outside the path of charged particles produced on discharge but close or near the site of the UV production, the arrangement significantly enhances the light output because the phosphor surfaces are greater in extent area wise and are closer to the UV sources in the discharge and are not in the path of the discharge products. Since the light is produced in two spaced areas of phosphor by the UV produced on discharge, more light is produced and electrodes have less attenuating effect on visible light emission from each side.
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O'Shea Sandra L.
Patel Vip
Zeeger, Esq. Jim
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