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公开(公告)号：US10811575B2
公开(公告)日：2020-10-20
申请号：US16049783
申请日：2018-07-30
Applicant: Facebook Technologies, LLC
Inventor： Daniel Brodoceanu , David Massoubre , James Small , Oscar Torrents Abad , Patrick Joseph Hughes
Abstract: Techniques related to laser lift-off masks are disclosed. In some embodiments, masking material is applied to a substrate that is attached to a plurality of semiconductor device sets. More specifically, the masking material is applied to one or more regions of the substrate between the semiconductor device sets. When the semiconductor device sets are embedded in a filling material, the masking material may be situated between the substrate and the filling material. Thus, transmitting light through the substrate toward the semiconductor device sets causes the substrate to become detached from the semiconductor device sets. However, the light is at least partially occluded by the masking material.
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公开(公告)号：US11245055B2
公开(公告)日：2022-02-08
申请号：US16661486
申请日：2019-10-23
Applicant: Facebook Technologies, LLC
Inventor： Daniel Bryce Thompson , James Small
Abstract: Disclosed herein are techniques for reducing the pitch between light-emitting diodes (LEDs) in an array of LEDs. According to an aspect of the invention, a device includes an array having a plurality of LEDs and a reflector that is in Ohmic contact with at least two adjacent LEDs of the plurality of LEDs. Each LED of the plurality of LEDs includes a p contact, and the reflector is physically separated from the p contact of each LED of the plurality of LEDs.
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公开(公告)号：US11275202B1
公开(公告)日：2022-03-15
申请号：US15824972
申请日：2017-11-28
Applicant: Facebook Technologies, LLC
Inventor： James Ronald Bonar , James Small , Gareth John Valentine
IPC: G02B3/00 , H01L21/265 , H01L33/32
Abstract: A GaN layer of micro-LEDs is exposed to ion implantation to amorphize one or more regions of the GaN layer. As a result, the GaN layer through which light rays propagate have non-uniform refractive indexes that modify propagation paths of some light rays. Ions are implanted in a region overlapping an active region that emits light to function as a converging GRIN (gradient-index) lens. The ion implanted regions collimate light rays that propagate along predetermined directions. As such, the light extraction from and the focus of the micro-LEDs is increased.
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公开(公告)号：US10698158B1
公开(公告)日：2020-06-30
申请号：US15824970
申请日：2017-11-28
Applicant: Facebook Technologies, LLC
Inventor： James Ronald Bonar , James Small , Gareth John Valentine
IPC: H01L33/58 , H01L33/06 , H01L29/12 , G02B6/13 , G02B6/12 , G02F1/025 , G02B6/134 , G02B6/122 , G02B6/132
Abstract: Ion implantation is carried out into a GaN layer of mLEDs to partially or fully convert one or more regions of the crystalline GaN layer to amorphous GaN. As a result, the GaN layer through which light rays propagate have non-uniform refractive indexes that modify propagation paths of some light rays. Ions can be implanted in a region around an active region that emits light to function as an optical waveguide. The ion implanted regions direct light rays that propagate along predetermined directions into predetermined propagation paths thereby to modify the angle of incidence of these light rays. As such, the light extraction efficiency of the mLEDs is increased.
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公开(公告)号：US10381513B2
公开(公告)日：2019-08-13
申请号：US15847760
申请日：2017-12-19
Applicant: Facebook Technologies, LLC
Inventor： James Ronald Bonar , Zheng Gong , James Small , Gareth John Valentine , Richard I. Laming
IPC: H01L33/62 , H01L33/60 , H01L33/58 , H01L33/46 , H01L33/42 , H01L33/40 , H01L33/38 , H01L33/32 , H01L33/24 , H01L33/20 , H01L33/08 , H01L33/06 , H01L25/075 , H01L33/00
Abstract: There is herein described light generating electronic components with improved light extraction and a method of manufacturing said electronic components. More particularly, there is described LEDs having improved light extraction and a method of manufacturing said LEDs.
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Patent Agency Ranking
公开(公告)号：US11101418B1
公开(公告)日：2021-08-24
申请号：US16566750
申请日：2019-09-10
Applicant: Facebook Technologies, LLC
Inventor： Daniel Bryce Thompson , James Small
Abstract: Described are light emitting apparatus with self-aligned elements and techniques for manufacturing such light emitting apparatus. In certain embodiments, a light emitting apparatus includes a mesa formed by a plurality of semiconductor layers. The light emitting apparatus further includes an electrical contact on one of the semiconductor layers and a spacer around the electrical contact. The spacer is aligned with respect to the electrical contact, which permits etching around the spacer to define the shape of the mesa in such a way that the mesa is also aligned with respect to the electrical contact. In particular, the electrical contact is substantially centered between opposing sidewalls of the mesa.
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公开(公告)号：US10770634B1
公开(公告)日：2020-09-08
申请号：US16379426
申请日：2019-04-09
Applicant: Facebook Technologies, LLC
Inventor： Daniel Bryce Thompson , James Small
Abstract: Disclosed are techniques related to reflectors having overall mesa shapes. Such a reflector may be formed over an overall mesa-shaped, layered structure of an apparatus for emitting light. The overall mesa-shaped, layered structure may comprise a mesa complement structure, a first-type doped semiconductor, a light emission layer, and a second-type doped semiconductor arranged in layers. Thus, the reflector may be configured to collimate light that emits from the light emission layer and reaches the reflector through the mesa complement structure.
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公开(公告)号：US10694953B2
公开(公告)日：2020-06-30
申请号：US13261923
申请日：2012-12-19
Applicant: Facebook Technologies, LLC
Inventor： James Small , James Ronald Bonar , Zheng Gong , Gareth John Valentine , Erdan Gu , Martin David Dawson
IPC: A61B5/00 , A61N5/06 , A61B5/04 , H01L31/16 , H01L31/18 , H01L33/00 , H01L33/32 , A61B18/00 , A61B17/00
Abstract: There is herein described light emitting medical devices and a method of manufacturing said medical devices. More particularly, there is described integrated light emitting medical devices (e.g. neural devices) capable of being used in optogenetics and a method of manufacturing said medical devices.
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公开(公告)号：US20200035880A1
公开(公告)日：2020-01-30
申请号：US16049783
申请日：2018-07-30
Applicant: Facebook Technologies, LLC
Inventor： Daniel Brodoceanu , David Massoubre , James Small , Oscar Torrents Abad , Patrick Joseph Hughes
Abstract: Techniques related to laser lift-off masks are disclosed. In some embodiments, masking material is applied to a substrate that is attached to a plurality of semiconductor device sets. More specifically, the masking material is applied to one or more regions of the substrate between the semiconductor device sets. When the semiconductor device sets are embedded in a filling material, the masking material may be situated between the substrate and the filling material. Thus, transmitting light through the substrate toward the semiconductor device sets causes the substrate to become detached from the semiconductor device sets. However, the light is at least partially occluded by the masking material.
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公开(公告)号：US10955659B2
公开(公告)日：2021-03-23
申请号：US16058752
申请日：2018-08-08
Applicant: Facebook Technologies, LLC
Inventor： Vincent Brennan , James Small , William Anthony Wall , Stephen Warren Gorton , Wanli Chi , Nicholas Daniel Trail
Abstract: A light assembly can have an array of light sources forming rows and columns, where the array comprises a plurality of chips, and each chip comprises a subarray of light sources forming the rows and columns. A boundary between chips in the array can be configured to extend diagonally across rows and columns of the array such that, for each column across which the boundary extends, the first row of the plurality rows may not have a light source disposed in the respective column, but a second row of the plurality of rows has a light source disposed in the respective column.
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