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公开(公告)号：US11422390B2
公开(公告)日：2022-08-23
申请号：US16849859
申请日：2020-04-15
Applicant: Meta Platforms Technologies, LLC
Inventor： Matthieu Charles Raoul Leibovici , Jasmine Soria Sears , Christophe Antoine Hurni , Nathan Matsuda , Guohua Wei , Yu Shi , John Goward
Abstract: A device includes an optical assembly and a digital projector. The optical assembly is configured to receive visible scene light at a backside of the optical assembly and to direct the visible scene light on an optical path toward an eyeward side. The optical assembly includes a dimming layer disposed on the optical path. The dimming layer includes a photochromic material that is configured to darken in response to exposure to a range of light wavelengths. The digital projector is disposed on the eyeward side of the optical assembly and is configured to selectively emit an activation light within the range of light wavelengths to activate a darkening of a region of the dimming layer to dim the visible scene light within the region.
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公开(公告)号：US12243906B2
公开(公告)日：2025-03-04
申请号：US17525442
申请日：2021-11-12
Applicant: Meta Platforms Technologies, LLC
Inventor： Stephan Lutgen , Markus Broell , Thomas Lauermann , Berthold Hahn , Christophe Antoine Hurni , Guillaume Lheureux
Abstract: A light source includes an epitaxial layer stack that includes an n-type semiconductor layer, a light-emitting layer, and a p-type semiconductor layer. The epitaxial layer stack includes a two-dimensional (2-D) array of mesa structures formed therein. The light source further includes an array of p-contacts electrically coupled to the p-type semiconductor layer of the 2-D array of mesa structures, a metal layer in regions surrounding individual mesa structures of the 2-D array of mesa structures, and a plurality of n-contacts coupling the metal layer to the n-type semiconductor layer at a plurality of locations between the individual mesa structures of the 2-D array of mesa structures.
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Patent Agency Ranking
3.发明申请公开(公告)号：US20250022981A1
公开(公告)日：2025-01-16
申请号：US18765036
申请日：2024-07-05
Applicant: Meta Platforms Technologies, LLC
Inventor： Julia D'Rozario , David Massoubre , Francois Gérard Franck Olivier , Guillaume Lheureux , Christophe Antoine Hurni
Abstract: A method for increasing carrier confinement in light-emitting devices may comprise (1) selectively depositing material over a layered structure of a light-emitting device and (2) defining an emitter size of the light-emitting device by causing the material to disorder regions of a light-emitting layer included in the layered structure. Various other apparatuses, systems, and methods are also disclosed.
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公开(公告)号：US20240081122A1
公开(公告)日：2024-03-07
申请号：US18462477
申请日：2023-09-07
Applicant: Meta Platforms Technologies, LLC
Inventor： Zhimin Shi , Yun Wang , Fenglin Peng , Christophe Antoine Hurni , James Ronald Bonar , Edward Buckley , Andrew John Ouderkirk , Yongdan Hu
CPC classification number: H10K59/38 , H10K59/50 , H10K59/878 , H10K59/879 , H10K59/8793
Abstract: A display system may include a light source that emits input light having a wavelength within a source wavelength range and an array of color conversion units overlapping a display area. A first set of color conversion units of the array of color conversion units may include a first color conversion medium that converts the input light to a first color of light having a wavelength within a first wavelength range that is different than the source wavelength range. The display system may also include a waveguide having an out-coupler that directs the input light from the light source toward the array of color conversion units. Various other devices, systems, and methods are also disclosed.
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公开(公告)号：US20250079791A1
公开(公告)日：2025-03-06
申请号：US18595109
申请日：2024-03-04
Applicant: Meta Platforms Technologies, LLC
Inventor： Chloe Astrid Marie Fabien , Anurag Tyagi , Julia D'Rozario , Christophe Antoine Hurni , Zhimin Shi , Christopher Pynn
Abstract: An optical element includes an active region overlying a substrate and disposed between an n-type layer and a p-type layer, a plurality of n-type contacts each overlying a respective portion of the n-type layer, and a p-type contact overlying the p-type layer and opposing the plurality of n-type contacts.
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公开(公告)号：US12009465B1
公开(公告)日：2024-06-11
申请号：US17681203
申请日：2022-02-25
Applicant: META PLATFORMS TECHNOLOGIES, LLC
IPC: H01L33/62 , G02B27/01 , H01L25/075 , H01L33/00 , H01L33/58
CPC classification number: H01L33/62 , G02B27/017 , H01L25/0753 , H01L33/0095 , H01L33/58 , G02B2027/0178 , H01L2933/0066
Abstract: In a flip-chip LED assembly having an array of LEDs formed on the same substrate, different LEDs of the array have different distances to the n-contacts of the assembly. This may cause current crowding as current has to spread from the n-contacts through the substrate to each the farthest LEDs of the LED array, requiring LEDs that are farther away to be driven with a higher voltage in order to receive a desired amount of current. To spread current more evenly through the LED assembly and reduce a voltage difference between the closest and farthest LEDs of the array, a current spreading layer having a conductive material (e.g., a conductive oxide) is formed on a surface of the substrate of the LED assembly. The current spreading layer may be a bulk layer or be patterned to increase light extraction from the LEDs of the array.
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公开(公告)号：US11764331B1
公开(公告)日：2023-09-19
申请号：US17466380
申请日：2021-09-03
Applicant: META PLATFORMS TECHNOLOGIES, LLC
CPC classification number: H01L33/382 , G02B27/0176 , H01L25/0753 , H01L33/62 , G02B2027/0178 , H01L2933/0016
Abstract: In a flip-chip LED assembly having an array of LEDs formed on the same substrate, different LEDs of the array have different distances to the n-contacts of the assembly. This may cause current crowding as current has to spread from the n-contacts through the substrate to each the farthest LEDs of the LED array, requiring LEDs that are farther away to be driven with a higher voltage in order to receive a desired amount of current. To spread current more evenly through the LED assembly and reduce a voltage difference between the closest and farthest LEDs of the array, one or more additional n-contacts are formed within the LED array. In some embodiments, the n-contacts may replace a pixel of the LED array. In other embodiments, one or more p-contacts of the LED array are resized or repositioned to accommodate the additional n-contacts without sacrificing pixels of the LED array.
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