AVS 47th International Symposium
    Flat Panel Displays Tuesday Sessions
       Session FP-TuP

Paper FP-TuP1
Fabrication and Characterization of Blue Light Emission from a Well-Type Field Emitter Device Implementing a Thin Film ZnO:W Phosphor

Tuesday, October 3, 2000, 5:30 pm, Room Exhibit Hall C & D

Session: Poster Session
Presenter: V. Bhatia, Texas A&M University
Authors: V. Bhatia, Texas A&M University
H.R. Kim, Texas A&M University
M.H. Weichold, Texas A&M University
Correspondent: Click to Email
Flat panel displays based on the principals of field emission, in theory, can delivery a picture quality comparable to a cathode ray tube at lower voltages with efficient phosphors. Microtip fabrication and availability of low voltage blue light emitting phosphors have been some of the key issues of research for the commercialization of these displays. This paper presents the fabrication of lateral edges as electron sites to produce blue light from the co-deposited thin film of zinc oxide and tungsten. The phosphor used in the lateral edge field emitter device has been fabricated at Texas A&M University@footnote 1@ by co-depositing zinc oxide and tungsten and annealing the thin film under appropriate annealing conditions. Phosphor emits blue light (490nm) at voltages as low as 300 V. It has been determined that the formation of ZnWO@sub 4@ was responsible for the emission of blue light.@footnote 2@ The device design to implement the blue phosphor is based on the design provided by L. D. Karpov.@footnote 3@ For the emission of electrons to excite phosphors, emitters have been fabricated by a combination of metal-carbon-metal layers as the lateral edges of wells formed in a dielectric material. Phosphors are fabricated at the bottom of the wells above anode lines. The fabrication steps of the blue light emitting lateral edge emitter along with phosphor characterization, efficiency measurements, and current-voltage characterization are presented in this paper. @FootnoteText@@footnote 1@Technology Disclosure to TAMU Technical Licensing Office (1993). @footnote 2@J. B. Sobti, P. M. Babuchna, V. Bhatia, M. H. Weichold. Paper presented at Spring, 1999, MRS meeting. @footnote 3@L. D. Karpov, V. A. Dratch, V. S. Zasemkov, A. P. Genelyev, Y. V. Migorodsky, and S. B. Proskournin. Technical digest of the 6th International vacuum Microelectronics Conference, Newport, RI, 1993.