U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Large area display

Patent 4320418 Issued on March 16, 1982. Estimated Expiration Date: Icon_subject May 13, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Inventor

Application

No. 06/149415 filed on 05/13/1980

US Classes:

348/797, Gas discharge313/584, Having intersecting electrode sets315/169.4, Gas display panel device345/41, Fluid light-emitting display elements (e.g., gas, plasma)345/60Fluid light emitter (e.g., gas, liquid, or plasma)

Examiners

Primary: Richardson, Robert L.

International Classes

H04N 9/12 (20060101)
G09G 3/28 (20060101)

Abstract

A display device is described with a large active viewing area having a high resolution electrode matrix of light emitting cells or pixels. The electrode matrix area is divided into at least two distinct sections by dividing each electrode along at least one axis into at least two separated electrode lengths, each length containing only a portion of the total number of light emitting pixels contained by the total unseparated length of the electrode. In the preferred practice, the electrode matrix area is divided into at least four distinct sections so as to divide each electrode along each axis into at least two lengths. Thus, the electrode matrix area is divided into at least two, preferably at least four, distinct sections of light emitting cells or pixels. Each area of the matrix can be electrically driven by the same or different electrical circuits. Each separated electrode length has decreased electrical resistance, decreased electrical capacitance and requires less electrical current. This results in the more uniform operation of each cell or pixel relative to other cells along each electrode length, particularly less variations in the operating conditions and performance of each cell relative to other cells such as more uniform operating voltages, light emission, and brightness. The device may be used as a computer terminal, especially in a military tactical situation, with or without television or video application.

Other References

  • IBM Technical Note, vol. 12, No. 11, p. 1956, Apr. 1970
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