Full color organic light emitting diode array
First Claim
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1. A full color organic light emitting diode array comprising:
- a semiconductor substrate having a planar surface;
a plurality of laterally spaced, electrically conductive strips arranged in rows on the surface of the substrate with portions of the surface of the substrate exposed therebetween;
a layer of dielectric medium deposited over the conductive strips and the portions of the surface of the substrate;
a plurality of cavity structures defined by the dielectric medium and each cavity structure defining a sub-pixel, the plurality of cavity structures being positioned in rows in overlying relationship to the plurality of conductive strips with individual cavity structures positioned in overlying relationship to an associated conductive strip so as to expose a portion of the conductive strip;
three electroluminescent media, each including at least a layer of active emitter material and a layer of transparent conductive material, laterally and alternatively deposited in the cavity structures on the exposed associated conductive strip, with all cavity structures in each individual row containing only one kind of the three electroluminescent media, the transparent conductive material being connected to form a plurality of laterally spaced, parallel, metallic strips arranged in columns orthogonal to the conductive strips; and
a transparent dielectric material positioned in sealing engagement over the cavity structures.
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Abstract
An organic full color light emitting diode array including a plurality of spaced apart, electrically conductive strips formed on a semiconductor substrate, a plurality of cavities defined on top of the strips and three electroluminescent media designed to emit three different hues deposited, along with light transmissive electrical conductors, in the cavities. A transparent dielectric material is formed to seal each of the cavities. The semiconductor substrate is, for example, a CMOS substrate and drivers for the diode array are formed in the substrate.
88 Citations
17 Claims
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1. A full color organic light emitting diode array comprising:
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a semiconductor substrate having a planar surface; a plurality of laterally spaced, electrically conductive strips arranged in rows on the surface of the substrate with portions of the surface of the substrate exposed therebetween; a layer of dielectric medium deposited over the conductive strips and the portions of the surface of the substrate; a plurality of cavity structures defined by the dielectric medium and each cavity structure defining a sub-pixel, the plurality of cavity structures being positioned in rows in overlying relationship to the plurality of conductive strips with individual cavity structures positioned in overlying relationship to an associated conductive strip so as to expose a portion of the conductive strip; three electroluminescent media, each including at least a layer of active emitter material and a layer of transparent conductive material, laterally and alternatively deposited in the cavity structures on the exposed associated conductive strip, with all cavity structures in each individual row containing only one kind of the three electroluminescent media, the transparent conductive material being connected to form a plurality of laterally spaced, parallel, metallic strips arranged in columns orthogonal to the conductive strips; and a transparent dielectric material positioned in sealing engagement over the cavity structures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification
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Current AssigneeUniversal Display Corporation
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Original AssigneeMotorola, Inc. (Motorola Solutions, Inc.)
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InventorsSo, Franky, Shi, Song Q.
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Primary Examiner(s)Jackson, Jerome
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Assistant Examiner(s)GUAY, JOHN FRANCIS
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Application NumberUS08/560,457Time in Patent Office872 DaysField of Search313/504, 313/509, 313/505, 313/506, 313/500, 257/88, 257/89, 257/40, 257/103, 340/825.81, 340/825.82, 345/45, 345/46, 345/82, 345/83, 345/80, 345/76US Class Current257/89CPC Class CodesH10K 59/17 Passive-matrix OLED displaysH10K 59/35 comprising red-green-blue [...
