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Publication numberUS2730644 A
Publication typeGrant
Publication date10 Jan 1956
Filing date10 Apr 1951
Priority date10 Apr 1951
Publication numberUS 2730644 A, US 2730644A, US-A-2730644, US2730644 A, US2730644A
InventorsMichlin Hyman A
Original AssigneeMichlin Hyman A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electroluminescent light means
US 2730644 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 10, 56 H. A. MICHLIN 2,730,644

ELECTROLUMINESCENT LIGHT MEANS Filed April 10 1951 5 s x T [5 LIT i l'l 1': I 1: i l '1' 0 Iii S E E I I: .I:

ll i 4 9 ELECTROLUMIINESCENT LIGHT MEANS Hyman A. Michlin, New York, N. Y.

Application April 10, 1951, Serial No. 220,173

' 1 Claim. or. sis-nos tric energy applied thereto, such as varying electric energy; and an example of which is the ZnS:Cu phosphor, the activator Cu of which can be varied, as is known to the art, to produce an emission in different parts of the spectrum of visible light.

Referring to the drawing, the combined layers of electroluminescent substances 3, 7 and 8, the transparent electrode layers 1 and 4 and the transparent insulation layers 6 are so thin as to form a controllable light source from a thin electroluminescent unit. Each thin layer of electroluminescent substances 3, 7 or 8 is capable of luminescing in a diiferent part of the visible spectrum on application of varying electric energy thereto, and is sandwiched between a thin transparent electrode layer 1 and a thin transparent electrode layer 4 so as to form separate electroluminescent assemblies, and each of said assemblies is arranged in superimposed relation to each other separated by a'thin transparent layer of insulation 6 so as to form a thin color controllable electroluminescent unit with the transparent insulation layers 9 forming the protecting ends of the said thin electroluminescent unit.

The thin transparent electrode layers 1 are impressed with a potential from electric energy sources 2 and the thin transparent electrode layers 4 are impressed with a difierent potential from electric energy sources so that by varying the potential differences and varying the in- United States Patent 0 tensities of potential difierences transmitted to each electroluminescent assembly there is effected a control of the resultant color emitted from the electroluminescent unit in accordance with the intensities of potential differences transmitted to each electroluminescent assembly. The potential differences between the electric energy sources 2 and 5 to produce electroluminescence to electroluminescent substances are known to the prior art, and which can be produced by varying electric energy. In this embodiment varying potential is used to produce electroluminescence.

Arrow 10 indicates the viewing direction from a viewer.

The drawing and specification are for illustration purposes and are not to be construed as restrictive; and, therefore, While I have disclosed one particular means for practicing my invention, it will be obvious that other structures may be of equal advantage, and, I therefore, do not wish to be limited to the particular method set set forth above except as my invention is so limited by the appended claim.

I claim:

A thin electroluminescent light means capable of being electrically controlled to vary resultant color emitted therefrom comprising a plurality of thin electroluminescent layers, each of said thin electroluminescent layers luminescing in a difierent part of the light spectrum, a thin transparent electrode layer on each side of each of said thin electroluminescent layers to thereby form separate electroluminescent assemblies, each of said electroluminescent assemblies arranged in superimposed relation to each other, and a thin layer of transparent insulation separating each of said electroluminescent assemblies.

References Cited in the file of this patent UNITED STATES PATENTS 2,248,985 Gray July 15, 1941 2,270,373 Kallmann et al. Jan. 20, 1942 2,446,791 Schroeder Aug. 10, 1948 2,455,710 Szegho Dec. 7, 1948 2,516,314 Goldsmith July 25, 1950 2,518,200 Sziklai et a1. Aug. 8, 1950 2,252,386 Sziklai et al. May 8, 1951 2,580,073 Burton Dec. 25, 1951 2,590,018 Koller et al Mar. 18, 1952 2,594,740 DeForest et al Apr. 29, 1952 OTHER REFERENCES Scheraga et 211.: Video Handbook, second printing, 1949, William F. Boyce, publisher, page 61. Copy in Div. 54.

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2795730 *7 Nov 195111 Jun 1957Westinghouse Electric CorpTricolor television picture tube
US2867739 *5 Jan 19566 Jan 1959Michlin Hyman AElectroluminescent color lamp
US2884528 *5 Mar 195628 Apr 1959Rca CorpStereoscopic x-ray intensification
US2915661 *19 Feb 19531 Dec 1959Westinghouse Electric CorpColor television screen
US2918594 *1 Aug 195822 Dec 1959Gen ElectricVariable color electroluminescent lamp
US2924732 *5 Jul 19579 Feb 1960Westinghouse Electric CorpArea-type light source
US2925532 *1 Dec 195516 Feb 1960Rca CorpPolychromatic electroluminescent means
US2926263 *1 Dec 195523 Feb 1960Rca CorpPicture storage device
US2928975 *16 Aug 195615 Mar 1960Gen ElectricColor information presentation system
US2928980 *16 Aug 195615 Mar 1960Gen ElectricColor information presentation system
US2929950 *28 Dec 195622 Mar 1960Electronique & Automatisme SaElectroluminescence devices
US2990473 *4 May 195527 Jun 1961Research CorpMethod for recording, detecting and measuring radiation and for recording and recalling data
US3058003 *8 Apr 19579 Oct 1962Michlin Hyman AFlexibly controlled resultant color display sign
US3103607 *2 Jul 195310 Sep 1963 Electroluminescent lamp with ceramic dielectric
US3185866 *8 Feb 196225 May 1965Harpell George FMagnetic function generator
US3310703 *7 Oct 196421 Mar 1967William BrooksElectroluminescent device and photoresist method for making the same
US5336965 *21 Dec 19909 Aug 1994Ford Motor CompanySolar load reduction glazing unit with electroluminescent element
US5804918 *7 Dec 19958 Sep 1998Nippondenso Co., Ltd.Electroluminescent device having a light reflecting film only at locations corresponding to light emitting regions
US7128439 *23 Dec 200331 Oct 2006Winsor CorporationMulti-use planar photoluminescent lamp and method of making such lamp
US20050135080 *23 Dec 200323 Jun 2005Winsor CorporationMulti-use photoluminescent lamp having integral support structures and method of making the same
DE1123398B *31 Jan 19618 Feb 1962Philips NvElektroleuchtende Lampe
DE1127469B *28 Jul 196012 Apr 1962Owensi Corning Fiberglasi CorpLeuchtstoffplatte
DE3114200A1 *8 Apr 198125 Mar 1982Lohja Ab OyElektrolumineszenzanzeige-komponente
U.S. Classification313/498, 348/E09.24
International ClassificationH04N9/12, H04N9/30, H05B33/00
Cooperative ClassificationH04N9/30, H05B33/00
European ClassificationH04N9/30, H05B33/00