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INVENTION
Russian Federation Patent RU2124281
FLEXIBLE LIGHT SOURCE electroluminescent
Name of applicant: Kupriyanov Vladimir Dmitrievich; Sinelnikov Boris
Name of the inventor: Kupriyanov Vladimir Dmitrievich; Sinelnikov Boris
The name of the patentee: Kupriyanov Vladimir Dmitrievich; Sinelnikov Boris
Address for correspondence:
Starting date of the patent: 1996.11.29
This invention relates to electroluminescent light sources and may be used in signaling and pointing device for advertising panels, decorative panels, lamps, etc. The light source consists of two thread-like or wire electrodes, which are successively formed on the filled resin layers: conductive carbon black and graphite in a binder with a high dielectric permittivity of the binder, in EL binder which is applied over the transparent electrically conductive layer common conductive filler in the binder. The dielectric with a high dielectric constant of barium titanate dispersed use or zinc oxide doped with gallium, or indium oxide doped with tin or antimony. The content of doping element is 0.3-1.3 wt. %. As a binder used butadiene rubber. The light source has an envelope made of a flexible optically transparent dielectric material. Use of an electroluminescent light source will increase the brightness and improve uniformity of illumination.
DESCRIPTION OF THE INVENTION
This invention relates to electroluminescent light sources and may be used in signaling and pointing device for advertising panels, decorative panels, lamps, etc.
Known flexible electroluminescent panel (ELP), which contains two electrodes, which are to ensure the transparent double-sided luminescence performed /A.s. USSR N 411672, cl. H 05 B 33/26, BI N 2 1974 /.
The disadvantages of this ELP is low brightness and the breakdown voltage, providing two-way only emission, a weak resistance to kinking.
The closest to the proposed technical solution is a flexible electroluminescent light source (GELIS) having a base with a relief grooves for EL in an epoxy resin, disposed between electrodes, between a dielectric insulated, made of fibers. Fibres embossed base and the electrodes arranged along the axis of symmetry in a sealed flexible envelope made of a transparent dielectric material / RF Patent N 2000678C. Flexible elekrolyuminestsentny light source MKI H 05 B 33/26, 07.09.93 /.
The disadvantages of this are GELIS low brightness and illumination uniformity.
The aim of the proposed technical solution is to increase the brightness and better illumination homogeneity.
The essence of the proposed technical solutions lies in the fact that two wire or thread-like electrodes are formed successively filled polymer layers: conductive carbon black and graphite in a binder with high dielectric permittivity ( 
) In the binder, in EL binder which is applied over the common transparent electrode layer based on an electrically conductive filler in a binder, and as a dielectric with a high dispersed using barium titanate or titanium oxide as conductive filler - zinc oxide doped (doped activated) gallium, or indium oxide doped (activated doped) or antimony tin: doping element content is 0.3 - 1.3 wt .% as a binder used butadiene rubber GELIS has a shell made of a flexible optically transparent dielectric material.
The invention is illustrated by drawings, on which:
 FIG. 1 - a general view of a flexible electroluminescent light source |
 FIG. 2 - a light source circuitry |
The table given physical and technical characteristics GELIS for various exemplary embodiments.
GELIS principle of operation is based on the fact that when an alternating voltage on the aluminum wires (1), an alternating electric field between the conductive damping layer (2) and a transparent electroconductive layer (5), which is amplified by a dielectric layer (3); under the influence of the alternating electric field electroluminescent layer (4) begins to emit light. Transparent electrically conductive layer (5) it is common to two coaxial electroluminescent capacitors.
The possibility of obtaining GELIS functional layers, of uniform thickness, and ensures the absence of non-luminous portions GELIS illumination uniformity and the use of a high dielectric layer and butadiene rubber as a binder increases the brightness.
GELIS received TP of the present can be used in signaling and pointing device, in the manufacture of illuminated signs, decorative panels, etc. GELIS obtained according to the proposed TR brightness is 1.3 - 1.5 times higher than that of the prototype. Heterogeneity of the luminescence is not more than 10% of the prototype - 50%.
example 1
An example of a specific implementation illustrated in FIG.
1 wherein 1 - aluminum wire, 2 - damping electroconductive layer consisting of a mixture of graphite and conductive carbon black nitrile rubber, 3 - barium titanate dispersed in nitrile rubber, 4 - electroluminophor E-515-115 (220) a butadiene rubber, 5 - electrically conductive filler Zn (0,8% Ga) in the nitrile rubber, 6 - flexible transparent airtight envelope, made of high density polyethylene 0.3 mm thick.
Luminescence brightness and uniformity determined by the photocell 10 FES-correlating filter.
example 2
Same as in Example 1, but as the dielectric with a high dielectric constant of titanium oxide used.
example 3
Same as in Example 1 but using as a conductive filler Jn 2 O 3 (0,8% Sb).
example 4
Same as in Example 1 but using as a conductive filler Jn 2 O 3 (0,8% Sn).
example 5
According to the prototype.
CLAIM
Flexible electroluminescent light source comprising two filamentary or wire electrodes EL in a binder and having a sealed casing made of a flexible optically transparent dielectric material, characterized in that each of the electrodes are successively formed filled polymer layers: graphite and conductive carbon black in a binder, dielectric with a high dielectric constant in the binder, in EL binder which is applied over the common transparent electroconductive layer based on an electrically conductive filler in the binder.
A method according to claim 1, characterized in that is used as a dielectric with a high dielectric constant barium titanate or titanium oxide, an electrically conductive filler - indium oxide doped with tin or antimony, or zinc oxide doped with gallium doping element content of 0.3 - 1 ., 3% by weight, and as binder - butadiene rubber.
print version
Publication date 23.11.2006gg
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