公开(公告)号：US11728318B1

公开(公告)日：2023-08-15

申请号：US17739981

申请日：2022-05-09

申请人： Meta Platforms Technologies, LLC

发明人： Gareth John Valentine

IPC分类号： H01L25/075 ,  H01L33/62 ,  H01L33/00 ,  H01L33/58

CPC分类号： H01L25/0753 ,  H01L33/005 ,  H01L33/58 ,  H01L33/62

摘要： A method for assembling an LED apparatus using an epitaxial layered structure comprising a first-type doped semiconductor layer, a second-type doped semiconductor layer, and an active layer between the doped semiconductor layers. The method involves depositing a conductive layer adjacent to and in ohmic contact with the first-type doped semiconductor layer. After forming a pattern masked layer on the conductive layer to expose one or more unprotected mask regions, the unprotected mask region(s) are processed to form a micropixellated structure having micropixel contact areas that are electrically isolated from each other. The method further involves placing a first contact pad over the micropixellated structure to overlap the micropixel contact areas and form a first electrode shared by a set of micro-LEDs. The micropixellated structure is also electrically coupled to a second contact pad that forms a second electrode shared by the set of micro-LEDs.

公开(公告)号：US20240105410A1

公开(公告)日：2024-03-28

申请号：US18476286

申请日：2023-09-27

申请人： Meta Platforms Technologies, LLC

发明人： Afsoon Jamali ,  Arman Boromand ,  Gareth John Valentine ,  Martin Schubert ,  Paul Murray LeFebvre ,  Francis Lawrence Leard ,  Olga Vladimirovna Barykina-Tassa

IPC分类号： H01H61/013 ,  G02B27/01 ,  G02F1/13 ,  H01H61/02

CPC分类号： H01H61/013 ,  G02B27/0172 ,  G02F1/132 ,  H01H61/02 ,  G02B2027/0118

摘要： An optical device includes a first optically dimmable switch for providing a first transmittance while the first optically dimmable switch is in a first state and providing a second transmittance distinct from the first transmittance while the first optically dimmable switch is in a second state distinct from the first state. The optical device also includes a dynamic heat source thermally coupled with the first optically dimmable switch. The dynamic heat source is at a first temperature at a first time and is at a second temperature distinct from the first temperature at a second time mutually exclusive from the first time. The optical device may operate as an optical dimming device, which may be used in head-mounted display devices or as dimmable windows or shutters.

公开(公告)号：US12099192B1

公开(公告)日：2024-09-24

申请号：US17684325

申请日：2022-03-01

申请人： META PLATFORMS TECHNOLOGIES, LLC

发明人： Andrew John Ouderkirk ,  James Hillis ,  Marina Zannoli ,  Jasmine Soria Sears ,  James Ronald Bonar ,  Gareth John Valentine ,  Barry David Silverstein ,  Warren Andrew Hunt

IPC分类号： G02B27/14 ,  G02B27/01 ,  G02B27/10 ,  G02F1/03 ,  G02F1/1335 ,  G03H1/00 ,  G09G5/00 ,  H01L27/15 ,  G09G5/02

CPC分类号： G02B27/0172 ,  G02B27/0101 ,  G02B27/017 ,  G02B27/0179 ,  H01L27/156 ,  G02B2027/0112 ,  G02B2027/0118 ,  G02B2027/0123 ,  G02B2027/0178 ,  G02B2027/0187 ,  G09G5/026 ,  G09G2320/0686 ,  G09G2330/021 ,  G09G2354/00

摘要： A display device includes a display panel having a first emission region and one or more second emission regions disposed adjacent to the first emission region. The display device includes a plurality of light emitters, arranged in the first emission region, corresponding to a first color gamut and a plurality of light emitters, arranged in the one or more second emission regions, corresponding to a second color gamut that is distinct from the first color gamut. A method for making a display device with a plurality of light emitters corresponding to a first color gamut in a first emission region and a plurality of light emitters corresponding to a second color gamut in a second emission region is also described.

公开(公告)号：US20230400748A1

公开(公告)日：2023-12-14

申请号：US17837751

申请日：2022-06-10

申请人： Meta Platforms Technologies, LLC

发明人： Gareth John Valentine ,  Zhimin Shi ,  Xi Wu

IPC分类号： G02F1/35 ,  G02F1/39 ,  G02B27/01 ,  G02B6/12

CPC分类号： G02F1/3546 ,  G02F1/395 ,  G02B27/0172 ,  G02B6/12009 ,  G02B2207/101 ,  B82Y20/00

摘要： According to examples, a tunable visible light source may include a periodically poled lithium niobate (PPLN) waveguide and a control mechanism to optimize the phase-matching of the PPLN waveguide in response to an input signal with a varied wavelength. The control mechanism may include an electro-optic (EO) tuning mechanism, a microheater-based thermo-optic (TO) control mechanism, and/or an acousto-optic (AO) control mechanism. The control mechanisms may, respectively, generate an electric field, heat, or an acoustic wave to affect a change in refractive index of the PPLN waveguide and thereby optimize the conversion efficiency to maximize the output power of the output wavelength of the PPLN waveguide as the input wavelength is tuned.

公开(公告)号：US11563146B1

公开(公告)日：2023-01-24

申请号：US17133421

申请日：2020-12-23

申请人： META PLATFORMS TECHNOLOGIES, LLC

发明人： Gareth John Valentine ,  James Ronald Bonar

IPC分类号： H01L33/10 ,  H01L33/00 ,  H01L33/06 ,  H01L33/32 ,  H01L33/46

摘要： Embodiments of the present disclosure generally relate to light emitting diodes LEDs and methods of manufacturing the LEDs. The LEDs include a mesa-structure that improves light extraction of the LEDs. Furthermore, the process for forming the LEDs refrains from using physical etching to a quantum well active region of the LEDs to prevent compromising performance at the quantum well sidewall.