Multi-LED structures with reduced circuitry
AssigneeX Display Company Technology Limited
InventorsRonald S. Cok, Matthew Alexander Meitl
Life of this patent
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Abstract
A multi-LED structure comprises a first LED and a separate second LED disposed on a common multi-LED native substrate. The LEDs each comprise a common first layer having a cantilever portion and a base portion and a common second layer having a light-emitting emission portion disposed only over the base portion. An LED electrode electrically connects the first LED to the second LED. The cantilever portion extends in a direction different from the base portion or a length of the cantilever portion is less than a distance between the emission portions of the first and second LEDs.
Claims23
A multi-LED structure, comprising:
- a multi-LED native substrate;
- a patterned semiconductor layer native to the multi-LED native substrate comprising semiconductor portions disposed at least partially on or over the multi-LED native substrate, the semiconductor portions defining at least a first LED and a second LED separate from the first LED that are native to the multi-LED native substrate, the first LED and the second LED each comprising (i) a first layer having a cantilever portion and a base portion, and (ii) a second layer disposed only over the base portion of the first layer and comprising an emission portion;
- and
- an LED electrode disposed on at least a portion of the first LED and on at least a portion of the second LED, the LED electrode electrically connecting the first LED to the second LED,
- wherein
- (i) the cantilever portion of the first LED extends in a first direction and the base portion of the first LED extends in a second direction different from the first direction,
- (ii) the cantilever portion of the first LED has a first cantilever length, the cantilever portion of the second LED has a second cantilever length, and an LED emission separation distance between the emission portion of the first LED and the emission portion of the second LED is less than or equal to the first cantilever length and less than or equal to the second cantilever length, or
- (iii) both (i) and (ii).
A multi-LED component structure, comprising:
- a component substrate;
- and
- one or more multi-LED structures, wherein the at least one multi-LED structures comprises a first multi-LED structure disposed on the component substrate and each of the one or more multi-LED structures comprises:
- a multi-LED native substrate,
- a patterned semiconductor layer native to the multi-LED native substrate comprising semiconductor portions disposed at least partially on or over the multi-LED native substrate, the semiconductor portions defining at least a first LED and a second LED separate from the first LED that are native to the multi-LED native substrate, the first LED and the second LED each comprising (i) a first layer having a cantilever portion and a base portion, and (ii) a second layer disposed only over the base portion of the first layer and comprising an emission portion, and
- an LED electrode disposed on at least a portion of the first LED and on at least a portion of the second LED, the LED electrode electrically connecting the first LED to the second LED,
- wherein the multi-LED structure is non-native to the component substrate.
An LED wafer, comprising a wafer comprising sacrificial portions separated by anchors, wherein each of the sacrificial portions has a multi-LED structure disposed entirely and completely over the sacrificial portion and the multi-LED structure is physically connected to an anchor of the anchors with a tether, wherein the multi-LED structure comprises
- a multi-LED native substrate,
- a patterned semiconductor layer native to the multi-LED native substrate comprising semiconductor portions disposed at least partially on or over the multi-LED native substrate, the semiconductor portions defining at least a first LED and a second LED separate from the first LED that are native to the multi-LED native substrate, the first LED and the second LED each comprising (i) a first layer having a cantilever portion and a base portion, and (ii) a second layer disposed only over the base portion of the first layer and comprising an emission portion, and
- an LED electrode disposed on at least a portion of the first LED and on at least a portion of the second LED, the LED electrode electrically connecting the first LED to the second LED.
A multi-LED structure, comprising:
- An electrically conductive semiconductor layer comprising a cantilever portion, two or more spatially separated base portions, and a separate emissive portion comprising a light-emissive semiconductor portion disposed on each base portion;
- and
- an LED contact pad disposed on each emissive portion,
- wherein each emissive portion emits light when electrical power is provided through the cantilever portion and the LED contact pad.
Dependencies are inferred from the claim text.