公开(公告)号：US20240120446A1

公开(公告)日：2024-04-11

申请号：US18482554

申请日：2023-10-06

Applicant: Google LLC

Inventor： Benjamin Leung ,  Miao-Chan Tsai ,  Sheila Hurtt ,  Gang He ,  Richard Peter Schneider, JR.

IPC: H01L33/32 ,  G02B3/04 ,  G02B27/30 ,  H01L33/00 ,  H01L33/18 ,  H01L33/60

CPC classification number: H01L33/325 ,  G02B3/04 ,  G02B27/30 ,  H01L33/0008 ,  H01L33/18 ,  H01L33/60

Abstract: The disclosure describes various aspects of using optical elements monolithically integrated with light-emitting diode (LED) structures. In an aspect, a light emitting device includes a single LED structure having an active region and a single optical element disposed on the LED structure and configured to collimate and steer light emitted by the LED structure. One or more additional optical elements may also be disposed on the LED structure. In another aspect, a light emitting device may include multiple LED structures and a single optical element disposed on the multiple LED structures and configured to collimate and steer light emitted by the multiple LED structures. For each of these aspects, the LED structure(s) and the optical element(s) are made of a material that includes GaN, the LED structure(s) has a corresponding active region, and the LED structure(s) has a corresponding reflective contact disposed opposite to the optical element(s).

公开(公告)号：US20240413266A1

公开(公告)日：2024-12-12

申请号：US18742543

申请日：2024-06-13

Applicant: GOOGLE LLC

Inventor： Ying-Lan Chang ,  Benjamin Leung ,  Miao-Chan Tsai ,  Richard Peter Schneider, JR. ,  Sheila Hurtt ,  Gang He

IPC: H01L33/06 ,  H01L27/15 ,  H01L33/00 ,  H01L33/14 ,  H01L33/32 ,  H01L33/46

Abstract: A light-emitting diode (LED) structure includes an active region that has at least one aluminum-containing quantum well (QW) stack that emits light from the LED structure when activated. The LED structure exhibits a modified internal quantum efficiency value, which is higher than a LED structure that does not include aluminum within a QW stack. The LED structure also exhibits a modified peak wavelength, which is longer than an unmodified peak wavelength of the unmodified LED structure.