Encapsulated fluid assembly emissive elements
First Claim
1. An encapsulated emissive element comprising:
- an emissive element having a profile and comprising a top surface, a bottom surface, a keel extending from the bottom surface, sidewall surfaces between the top and bottom surfaces, and a pair of electrical contacts; and
,a fluidic assembly key at least partially encapsulating the emissive element to form a profile, different than the emissive element profile.
1 Assignment
0 Petitions
Accused Products
Abstract
A method is provided for fabricating an encapsulated emissive element. Beginning with a growth substrate, a plurality of emissive elements is formed. The growth substrate top surface is conformally coated with an encapsulation material. The encapsulation material may be photoresist, a polymer, a light reflective material, or a light absorbing material. The encapsulant is patterned to form fluidic assembly keys having a profile differing from the emissive element profiles. In one aspect, prior to separating the emissive elements from the handling substrate, a fluidic assembly keel or post is formed on each emissive element bottom surface. In one variation, the emissive elements have a horizontal profile. The fluidic assembly key has horizontal profile differing from the emissive element horizontal profile useful in selectively depositing different types of emissive elements during fluidic assembly. In another aspect, the emissive elements and fluidic assembly keys have differing vertical profiles useful in preventing detrapment.
35 Citations
41 Claims
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1. An encapsulated emissive element comprising:
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an emissive element having a profile and comprising a top surface, a bottom surface, a keel extending from the bottom surface, sidewall surfaces between the top and bottom surfaces, and a pair of electrical contacts; and
,a fluidic assembly key at least partially encapsulating the emissive element to form a profile, different than the emissive element profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A fluidic assembly emissive display comprising:
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a substrate comprising; a top surface; a plurality of trap sites formed in the substrate top surface, with each trap site having an opening with a horizontal shape, defined from a vantage orthogonal to the substrate top surface, and a bottom surface with at least a first electrical interface connected to a corresponding intersection in an underlying row/column enablement matrix; an encapsulated emissive element occupying each trap site, each encapsulated emissive element comprising; an emissive element comprising a profile, a top surface, a bottom surface, a keel extending from the emissive element bottom surface, sidewall surfaces between the top and bottom surfaces, and a first electrical contact mounted on the emissive element top surface and connected to a corresponding trap site first electrical interface; and
,a fluidic assembly key at least partially encapsulating the emissive element to form a profile, different than the emissive element profile. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An encapsulated emissive element comprising:
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an emissive element having a vertical profile and comprising a top surface, a bottom surface, sidewall surfaces between the top and bottom surfaces, and a pair of electrical contacts, where a vertical profile is defined from a vantage orthogonal to the emissive element sidewalls; a fluidic assembly key at least partially encapsulating the emissive element to form a vertical profile, different than the emissive element vertical profile, the fluidic assembly key having a top surface width greater than or equal to a fluidic assembly key bottom surface width; and
,wherein the fluidic assembly key has a vertical profile slope formed between the fluidic assembly key bottom surface, aligned with the emissive element bottom surface, and the fluidic assembly key top surface aligned with the emissive element top surface. - View Dependent Claims (27, 28, 29)
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30. An encapsulated emissive element comprising:
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a surface mount emissive element having a profile and comprising a top surface, a bottom surface, sidewall surfaces between the top and bottom surfaces, a first electrical contact mounted on the top surface, and a second electrical contact mounted on the top surface; a fluidic assembly key at least partially encapsulating the emissive element to form a profile, different than the emissive element profile; and
,wherein the fluidic assembly key is an electrical insulator isolating the first electrical contact from the second electrical contact. - View Dependent Claims (31, 32, 33, 34)
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35. A fluidic assembly emissive display comprising:
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a substrate comprising; a top surface; a plurality of trap sites formed in the substrate top surface, with each trap site having an opening with a horizontal shape, defined from a vantage orthogonal to the substrate top surface, and a bottom surface with at least a first electrical interface connected to a corresponding intersection in an underlying row/column enablement matrix; an encapsulated emissive element occupying each trap site, each encapsulated emissive element comprising; an emissive element having a vertical profile and comprising a top surface, a bottom surface, sidewall surfaces between the top and bottom surfaces, and a pair of electrical contacts, where a vertical profile is defined from a vantage orthogonal to the emissive element sidewalls; a fluidic assembly key at least partially encapsulating the emissive element to form a vertical profile, different than the emissive element vertical profile, the fluidic assembly key having a top surface width greater than or equal to a fluidic assembly key bottom surface width; and
,wherein the fluidic assembly key has a vertical profile slope formed between the fluidic assembly key bottom surface, aligned with the emissive element bottom surface, and the fluidic assembly key top surface aligned with the emissive element top surface. - View Dependent Claims (36, 37, 38)
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39. A fluidic assembly emissive display comprising:
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a substrate comprising; a top surface; a plurality of trap sites formed in the substrate top surface, with each trap site having an opening with a horizontal shape, defined from a vantage orthogonal to the substrate top surface, and a bottom surface with at least a first electrical interface connected to a corresponding intersection in an underlying row/column enablement matrix; an encapsulated emissive element occupying each trap site, each encapsulated emissive element comprising; a surface mount emissive element having a profile and comprising a top surface, a bottom surface, sidewall surfaces between the top and bottom surfaces, a first electrical contact mounted on the top surface, and a second electrical contact mounted on the top surface; a fluidic assembly key at least partially encapsulating the emissive element to form a profile, different than the emissive element profile; and wherein the fluidic assembly key is an electrical insulator isolating the first electrical contact from the second electrical contact. - View Dependent Claims (40, 41)
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Specification