JOHN P LEWIS
Paramedic at 14 St, Gainesville, FL
License number
Florida 8520
Issued Date
Dec 1, 1986
Effective Date
Nov 1, 2016
Expiration Date
Dec 1, 2018
Category
Health Care
Type
Paramedic
Address
Address
1026 NE 14Th St, Gainesville, FL 32601
Phone
(352) 334-5078
Professional information
Electroluminescent Phosphor Thin Films With Increased Brightness That Includes An Alkali Halide
US Patent:
6169359, Jan 2, 2001
Filed:
Sep 14, 1998
Appl. No.:
9/153267
Inventors:
Paul H. Holloway - Gainesville FL
Mark Rogers Davidson - Florahome FL
Karen Elizabeth Waldrip - Gainesville FL
John S. Lewis - Gainesville FL
P. Niel Yocom - Princeton NJ
Mark Rogers Davidson - Florahome FL
Karen Elizabeth Waldrip - Gainesville FL
John S. Lewis - Gainesville FL
P. Niel Yocom - Princeton NJ
Assignee:
Planar Systems, Inc. - Portland OR
International Classification:
H01J 162, H01J 6304
US Classification:
313503
Abstract:
The luminance of a phosphor suitable for an alternating current thin-film electroluminescent device is substantially improved according to the present invention by including an alkali halide. The alkali halide included within the bulk of the phosphor material results in providing a significant number of trapping states which trap free electrons within the phosphor material. The addition of the trapping states (added defects) within the bulk tend to control the electrical and optical characteristics of the phosphor material. This reduces asymmetric light output characteristics of traditional phosphor material, reduces asymmetric current movement within the phosphor material, and decreases the influence of the interfaces between the phosphor material and insulating materials resulting in decreased aging and increased brightness.