US 12,757,525 B2 · Light emitting device with LED stack for display and display apparatus having the same

Abstract

A light emitting device including a first LED sub-unit, a second LED sub-unit disposed under the first LED sub-unit, a third LED sub-unit disposed under the second LED sub-unit, a first ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit, and in ohmic contact with the first LED sub-unit, a second ohmic electrode interposed between the second LED sub-unit and the third LED sub-unit, and in ohmic contact with the second LED sub-unit, a third ohmic electrode interposed between the second ohmic electrode and the third LED sub-unit, and in ohmic contact the third LED sub-unit, a plurality of electrode pads disposed on the first LED sub-unit, in which at least one of the first ohmic electrode, the second ohmic electrode, and the third ohmic electrode has a patterned structure.

Claims20

Dependent claims

A light module, comprising:

a circuit substrate;
a first LED sub-unit disposed on the circuit substrate;
a second LED sub-unit disposed on the first LED sub-unit;
a third LED sub-unit disposed on the second LED sub-unit;
an insulator disposed on the third LED sub-unit;
a first electrode interposed between the circuit substrate and the second LED sub-unit, and electrically connected to the first LED sub-unit;
a second electrode interposed between the first LED sub-unit and the third LED sub-unit, and electrically connected to the second LED sub-unit;
a third electrode interposed between the second electrode and the insulator, and electrically connected to the third LED sub-unit;
and
a first bonder disposed between the first LED sub-unit and the third LED sub-unit;
wherein at least one of:
the first electrode, the second electrode, or the third electrode, includes a shaped region, and wherein the first bonder covers the shaped region, and
wherein the shaped region includes a straight region or a curved region.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/218,386Filed 5 Jul 2023 · continuation

Priority

5 Dec 2017

Published

US 2023/0343810 A126 Oct 2023

Granted

6 Oct 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification20 codes

H10H 20/8131
Having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within the…
G02B 5/26
Filters: reflecting filters
H10H 20/813
Bodies: having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within…
H10H 20/82
Characterised by their shape, e.g. curved or truncated substrates: roughened surfaces, e.g. at the interface between epitaxial layers

Family

Application62/594,754Us provisional application · filed 5 Dec 2017

Application62/608,006Us provisional application · filed 20 Dec 2017

Application62/649,500Us provisional application · filed 28 Mar 2018

Application62/650,920Us provisional application · filed 30 Mar 2018

Application62/651,585Us provisional application · filed 2 Apr 2018

Application62/657,575Us provisional application · filed 13 Apr 2018

Application16/207,881Parent of this continuation · filed 3 Dec 2018

Application16/789,877Parent of this continuation · filed 13 Feb 2020

US 10,748,881 B2Parent of this continuation · filed 18 Aug 2020

Application17/521,754Parent of this continuation · filed 8 Nov 2021

US 11,289,461 B2Parent of this continuation · filed 29 Mar 2022