Light emission device comprising light emitting organic material

Details Light emission device comprising light emitting organic material Light emission device comprising light emitting organic material

1996-09-27

1997-09-30

Patel, Ashok

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313505, 313506, 313336, 313351, 313309, 428690, 428917, 3151693, H01J 3314, B32B 900

Patent

active

056729383

ABSTRACT:
A light emission device including (i) a light emitting organic material, i.e., an organic material which in response to an applied voltage thereon emits light in the visible spectrum; (ii) an array of emitter tip elements in contact with the light emitting organic material; (iii) the first conductor coupled to the emitter tip elements in the array to stimulate emission of electrons from the emitter tip elements when the first conductor is connected to a power supply; (iv) a second conductor contacting the organic material and in depart relationship to the array of emitter tip elements, the second conductor being arranged in relation to the first conductor, to impose an applied voltage on the organic material when the first conductor is connected to the power supply, and electrons are emitted from the emitter tip elements into the light emitting organic material. The light emission devices of the invention may be employed in applications such as electroluminiscent lamps, liquid crystal technologies, field emitter devices, micro-cathode ray tubes, light emitting diode particles, and the like.

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patent: 4940916 (1990-07-01), Borel et al.
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patent: 5347489 (1994-09-01), Imai et al.
patent: 5405709 (1995-04-01), Littman et al.
"Microcavity Effects In Organic Semiconductors," A. Dodabalapur, et al., Appl. Phys. Lett. 64(19), 9 May 1994, pp. 2486-2488.
"Electroluminescence of Doped Organic Thin Films, " C.W. Tang, et al., J. Appl. Phys. 65(9), 1 May 1989, pp. 3610-3616.
"Visible Light Emission From Semiconducting Polymer Diodes," D. Braun, et al., Appl. Phys. Lett. 58(18), 6 May 1991, pp. 1982-1984.

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