[PDF] Study Of Electroluminescent Display Techniques And Evaluation Of A Thin Film Cross Grid Display Panel eBook

Author : T. K. Lakshmanan
Publisher :
Page : 53 pages
File Size : 44,52 MB
Release : 1965
Category :
ISBN :

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A study was conducted of the state-of-the-art of electroluminescent display techniques applicable to simulation of on-board displays of future vehicles and displaying computer and/or video information for use in training devices. An evaluation was made of the various fabrication techniques to determine the one with greatest potential for producing a high resolution, bright cross-grid type panel display. A thin film cross-grid panel, 9 in. x 9 in. with 258 x 258 lines was fabricated and evaluated to determine operational characteristics and limitations. Some basic considerations were given to driving electronics to determine designs for maximum flexibility for computer generated inputs. (Author).

Author : E. J. Soxman
Publisher :
Page : 36 pages
File Size : 44,48 MB
Release : 1967
Category : Electroluminescent display systems
ISBN :

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An electroluminescent display panel of the cross-grid-matrix-type was fabricated on a 10-3/4 x 10-3/4-inch glass substrate using improved vacuum deposition procedures and a high brightness manganese-doped ZnS phosphor. This panel contained 256 x 256 active elements within an area of approximately 7 x 7 inches. Linear resolution was 36 elements per inch with a cross-conductor width of 0.020 inch and a separation of 0.007 inch. The display panel was successfully used as a viewing screen for rear-projected images. The brightness-voltage relationship of the thin film phosphor was such that a cross-suppression ratio in excess of 10,000 to 1 was achieved with an excited element brightness of 100 ft-L. Performance measurements indicated that the optimum drive frequency was about 15 kHz. For pulsed operation, a burst frequency of 37.5 Hz, a carrier frequency of 15 kHz, and a duty cycle of 0.25 percent gave an average brightness of a few foot-Lamberts. Useful operating lifetime of several hundred hours under the above conditions was indicated by preliminary data. The variation in brightness uniformity over a group of cells near the center of the panel was less than 7 percent at an average brightness level of 16 ft-L.A brightness reduction of about 12 percent was observed at a single cell when the contacting configuration was varied on the stannic oxide electrode. (Author).

Author :
Publisher :
Page : 456 pages
File Size : 41,61 MB
Release : 1995
Category : Aeronautics
ISBN :

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