Micro assembled LED displays and lighting elements
First Claim
Patent Images
1. A display comprising:
- a display substrate;
a first patterned metal layer on and in direct contact with a surface of the display substrate;
a dielectric layer on and in direct contact with the display substrate and the first patterned metal layer;
a polymer layer on and in direct contact with the dielectric layer, the polymer layer comprising a material different from the dielectric layer;
a plurality of light emitters on and in direct contact with a surface of the polymer layer, each light emitter of the plurality of light emitters having a first electrical connection and a second electrical connection on a same side of the respective light emitter, wherein the display substrate is non-native to the plurality of light emitters;
a plurality of vias formed through the polymer layer and dielectric layer, each via associated with a corresponding light emitter of the plurality of light emitters; and
a second patterned metal layer, the second patterned metal layer comprising a plurality of first interconnections and a plurality of second interconnections in a single layer, each first interconnection electrically connecting a first electrical connection of a corresponding light emitter of the plurality of light emitters to the first patterned metal layer through a corresponding via of the plurality of vias and each second interconnection electrically contacting the second electrical connection of the corresponding light emitter.
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Abstract
The disclosed technology provides micro-assembled micro-LED displays and lighting elements using arrays of micro-LEDs that are too small (e.g., micro-LEDs with a width or diameter of 10 μm to 50 μm), numerous, or fragile to assemble by conventional means. The disclosed technology provides for micro-LED displays and lighting elements assembled using micro-transfer printing technology. The micro-LEDs can be prepared on a native substrate and printed to a display substrate (e.g., plastic, metal, glass, or other materials), thereby obviating the manufacture of the micro-LEDs on the display substrate. In certain embodiments, the display substrate is transparent and/or flexible.
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Citations
20 Claims
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1. A display comprising:
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a display substrate; a first patterned metal layer on and in direct contact with a surface of the display substrate; a dielectric layer on and in direct contact with the display substrate and the first patterned metal layer; a polymer layer on and in direct contact with the dielectric layer, the polymer layer comprising a material different from the dielectric layer; a plurality of light emitters on and in direct contact with a surface of the polymer layer, each light emitter of the plurality of light emitters having a first electrical connection and a second electrical connection on a same side of the respective light emitter, wherein the display substrate is non-native to the plurality of light emitters; a plurality of vias formed through the polymer layer and dielectric layer, each via associated with a corresponding light emitter of the plurality of light emitters; and a second patterned metal layer, the second patterned metal layer comprising a plurality of first interconnections and a plurality of second interconnections in a single layer, each first interconnection electrically connecting a first electrical connection of a corresponding light emitter of the plurality of light emitters to the first patterned metal layer through a corresponding via of the plurality of vias and each second interconnection electrically contacting the second electrical connection of the corresponding light emitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification