公开(公告)号：US20240360991A1

公开(公告)日：2024-10-31

申请号：US18574690

申请日：2022-06-28

申请人： Lumileds LLC

发明人： Rob Jacques Paul Engelen ,  Mehdi Aas

IPC分类号： F21V23/04 ,  F21V5/00 ,  F21V23/00 ,  F21Y113/13 ,  F21Y115/10

CPC分类号： F21V23/0478 ,  F21V5/007 ,  F21V23/005 ,  F21Y2113/13 ,  F21Y2115/10

摘要： A structure and method of operating micro-LEDs are described. The micro-LEDs are arranged in a micro-LED array and have random orientations, distributions, and positions within the array. A lens array includes micro-lenses configured to capture light from the micro-LEDs. The micro-LED array structure is calibrated by capturing light from each of the micro-LEDs at different times and determining characteristics of the light from each of the micro-LEDs. Once image data of an image to be generated by the micro-LED array is received, a combination of the micro-LEDs to activate to produce the image, as well as the characteristics for driving the individual micro-LEDs is determined. The micro-LEDs are then activated to produce the image.

公开(公告)号：US12132161B2

公开(公告)日：2024-10-29

申请号：US18150673

申请日：2023-01-05

申请人： LUMILEDS LLC

发明人： Tze Yang Hin ,  Seng Huat Lau ,  Hideo Kageyama

IPC分类号： H01L33/62 ,  H01L25/075 ,  H01L33/48 ,  H01L33/56 ,  H01L33/64

CPC分类号： H01L33/62 ,  H01L25/0753 ,  H01L33/486 ,  H01L33/56 ,  H01L33/64

摘要： Light-emitting devices are described herein. A device includes a hybridized device having a top surface and a bottom surface and a packaging substrate comprising a metal inlay in an opening on a top surface of the packaging substrate. The metal inlay is thermally coupled to the bottom surface of the hybridized device. The device also includes conductive contacts on the top surface of the packaging substrate and conductive connectors electrically coupled between the top surface of the hybridized device and the top surface of the packaging substrate.

公开(公告)号：US12132151B2

公开(公告)日：2024-10-29

申请号：US16455047

申请日：2019-06-27

申请人： Lumileds LLC

发明人： Aimi Abass ,  Toni Lopez ,  Isaac Wildeson

IPC分类号： H01L33/46 ,  H01L33/04 ,  H01L33/20 ,  H01L33/32

CPC分类号： H01L33/46 ,  H01L33/04 ,  H01L33/20 ,  H01L33/32 ,  H01L2933/0083

摘要： An LED structure includes an epi layer grown on a substrate and a plurality of dielectric nanoantennas positioned within the epi layer. The dielectric antennas can be periodically arranged to reduce reabsorption of light and redirect oblique incident light to improve overall light coupling efficiency. Each of the dielectric nanoantennas can have a top, a bottom, a height less than 1000 nm and greater than 200 nm and a diameter less than 2000 nm and greater than 300 nm.

公开(公告)号：US20240332343A1

公开(公告)日：2024-10-03

申请号：US18742116

申请日：2024-06-13

申请人： LUMILEDS LLC

发明人： Yu-Chen Shen ,  Rohit Modi ,  Gregoire Denis

IPC分类号： H01L27/15 ,  H01L25/075 ,  H01L33/50

CPC分类号： H01L27/156 ,  H01L25/0753 ,  H01L33/502 ,  H01L33/505

摘要： A light emitting device comprises at least two semiconductor LEDs arranged in an array with each semiconductor LED comprising a light emitting surface with boundaries defined by a perimeter, a continuous layer comprising a first surface through which light is emitted from the light emitting device during operation and an oppositely positioned second surface disposed on or adjacent to the array and extending over the light emitting surfaces of the semiconductor LEDs, and a plurality of optical isolation structures arranged in the continuous layer in a discontinuous manner along the perimeters of the light emitting surfaces between adjacent LEDs in the array.

公开(公告)号：US20240327706A1

公开(公告)日：2024-10-03

申请号：US18737215

申请日：2024-06-07

申请人： LUMILEDS LLC

发明人： Tobias GIFTTHALER ,  Philipp-Jean STROBEL ,  Peter Josef SCHMIDT ,  Hans-Helmut BECHTEL ,  Wolfgang SCHNICK

IPC分类号： C09K11/77 ,  C09K11/55 ,  C09K11/63

CPC分类号： C09K11/77928 ,  C09K11/55 ,  C09K11/63 ,  C09K11/7715 ,  C09K11/77347

摘要： A family of optionally substituted oxonitridoberyllosilicate photoluminescent compositions (i.e., phosphors) is characterized by the formula AE1−x−y−uAy+uBe1−y−z−vBy+z+vSi1−z AlzO1−vN2+v: Eux,Ceu, where AE=Ba, Sr, Ca, Mg; A=Li, Na, K, Rb; 0≤x≤0.1; 0≤ u≤0.1; 0

公开(公告)号：US12099286B2

公开(公告)日：2024-09-24

申请号：US17496424

申请日：2021-10-07

申请人： Lumileds LLC

发明人： Frederic Stephane Diana ,  Nicola Bettina Pfeffer ,  Arjen Gerben Van der Sijde

IPC分类号： G03B21/20 ,  G02B27/14 ,  G02B27/28

CPC分类号： G03B21/2033 ,  G02B27/149 ,  G02B27/283 ,  G02B27/286 ,  G03B21/2073 ,  G03B21/208

摘要： In a projection display system, a polarizing beamsplitter can split an unpolarized light beam into a first internal beam and a second internal beam, which can have polarization states that are orthogonal. A polarization rotator, such as a half-wave plate, can rotate a plane of polarization of at least one of the first internal beam or the second internal beam. A beam aligner, such as a second polarizing beamsplitter, can change a propagation direction of at least one of the first internal beam or the second internal beam. The polarization rotator and the beam aligner each can adjust at least one of the first or second internal beams such that the first internal beam forms a first exiting beam and the second internal beam forms a second exiting beam. The first exiting beam and the second exiting beam can be adjacent and parallel and have parallel polarization states.

公开(公告)号：US20240297270A1

公开(公告)日：2024-09-05

申请号：US18280974

申请日：2022-03-16

申请人： Lumileds LLC

发明人： Robert Armitage

IPC分类号： H01L33/32 ,  H01L33/06

CPC分类号： H01L33/325 ,  H01L33/06

摘要： Described are light emitting diode (LED) devices including a quantum well on a superlattice structure. The LED device has a dominant wavelength greater than 520 nm. The dominant wavelength changes less than 7 nm when the current density increases from 10 A/cm2 to 100 A/cm2 and a junction temperature of the device changes less than 20° C.

公开(公告)号：US20240290928A1

公开(公告)日：2024-08-29

申请号：US18584459

申请日：2024-02-22

申请人： Lumileds LLC

发明人： Mukul Agrawal ,  Zhongmin Ren ,  Grigoriy Basin

IPC分类号： H01L33/62 ,  H01L25/075

CPC分类号： H01L33/62 ,  H01L25/0753

摘要： A method of forming one or more transparent microLED light sources comprises preparing or obtaining a flexible transparent sheet on which are disposed a plurality of inorganic microLEDs and conductive paths configured to power the plurality of inorganic microLEDs, positioning a solid transparent sheet of adhesive between the flexible transparent sheet and a transparent substrate, and bonding the transparent sheet of adhesive to the flexible transparent sheet and to the transparent substrate to form a laminated structure. The conductive paths and the microLEDs are arranged to form at least one sparse microLED array.

公开(公告)号：US12033990B2

公开(公告)日：2024-07-09

申请号：US17846616

申请日：2022-06-22

申请人： Lumileds LLC

发明人： Wouter Soer ,  Gregory Tashjian

IPC分类号： H01L25/075

CPC分类号： H01L25/0753

摘要： A lighting device includes a first LED configured to emit a first light, a second LED configured to emit a third light, a first phosphor disposed over the first LED and second LED, and arranged to absorb a portion of the first light and in response emit a second light of a longer wavelength than the first light, and a second phosphor disposed over the second LED, the second phosphor arranged to absorb a portion of the third light and in response emit a fourth light of a longer wavelength than the third light, and the fourth light exits the second phosphor into the first phosphor, and both the second light and fourth light exit the lighting device though the first phosphor.

公开(公告)号：US12019264B2

公开(公告)日：2024-06-25

申请号：US18198554

申请日：2023-05-17

申请人： Lumileds LLC

发明人： Frederic Stephane Diana

IPC分类号： F21V8/00 ,  G02F1/01 ,  G02F1/13357

CPC分类号： G02B6/0038 ,  G02B6/0056 ,  G02B6/0083 ,  G02F1/0136 ,  G02F1/13362

摘要： In a projection display system, a light-emitting diode (LED) can generate unpolarized light. A light guide can receive the unpolarized light from a perimeter of the light guide and guide the unpolarized light between a light emission surface and an opposing surface as guided light. The light guide can include a plurality of light-extraction features that can direct a portion of the guided light out of the light guide through the light emission surface as unpolarized emitted light. A polarizing film can reflect at least some of a first polarization state of the unpolarized emitted light into the light guide through the light emission surface and can transmit at least some of a second polarization state of the unpolarized emitted light through the polarizing film to form a polarized light beam. An angular reduction film can reduce a range of propagation angles of the polarized light beam.