Multidirectional electroluminescent lamp structures
First Claim
Patent Images
1. An electroluminescent lamp that emits light from the lamp in more than one direction comprising:
- a single dielectric film having a front surface and a back surface;
a phosphor layer on a discrete portion of the front surface of the dielectric film;
a front transparent electrode layer on the phosphor layer;
a front bus bar on the front transparent electrode layer for electrically connecting the front transparent electrode; and
a rear transparent electrode on the back surface of the dielectric film;
wherein the front electrode layer together with the rear electrode provide two parallel conductive electrodes that create the capacitance required for the excitation of the phosphor layer during operation of the lamp;
wherein emitted light is visible through both the front and rear transparent electrodes.
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Abstract
The present invention is an EL lamp structure that provides multidirectional light emission from the structure through the use of transparent front and rear electrode layers in the EL lamp structure. By utilizing various printing and depositing methods for the structural component layers of the EL lamp, light emission can be provided from the front and back surfaces of an EL lamp structure as well as a surface of a three-dimensional object.
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Citations
13 Claims
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1. An electroluminescent lamp that emits light from the lamp in more than one direction comprising:
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a single dielectric film having a front surface and a back surface;
a phosphor layer on a discrete portion of the front surface of the dielectric film;
a front transparent electrode layer on the phosphor layer;
a front bus bar on the front transparent electrode layer for electrically connecting the front transparent electrode; and
a rear transparent electrode on the back surface of the dielectric film;
wherein the front electrode layer together with the rear electrode provide two parallel conductive electrodes that create the capacitance required for the excitation of the phosphor layer during operation of the lamp;
wherein emitted light is visible through both the front and rear transparent electrodes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electroluminescent lamp that emits light from the lamp in more than one direction comprising:
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a single film having a front surface and a back surface with a sputtered indium tin oxide layer;
a phosphor layer on a discrete portion of the front surface of the film;
a front transparent electrode on the phosphor layer; and
a front bus bar in a pattern on the front transparent electrode layer for electrically connecting the front transparent electrode;
wherein the front electrode together with the sputtered indium tin oxide provide two parallel conductive electrodes that create the capacitance required for the excitation of the phosphor layer during operation of the lamp.
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8. A series of electroluminescent lamps that emit light from the lamps in more than one direction comprising:
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a strip of dielectric film having a front surface and a back surface;
a front electrical trace and a rear electrical trace that both run along the dielectric film strip;
a series of lamps are disposed at discrete portions along the dielectric film strip;
each lamp includinga phosphor layer on the front surface of the dielectric film;
a front transparent electrode on the phosphor layer; and
a rear transparent electrode on the back surface of the dielectric film;
wherein each front electrode together with each rear electrode provide two parallel conductive electrodes that create the capacitance required for the excitation of the phosphor layer;
wherein the front and rear electrodes of the lamps are connected in parallel across the front electrical trace and the rear electrical trace;
wherein emitted light is visible through both the front and rear transparent electrodes. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification