Patents Assigned to Lumileds LLC
  • Publication number: 20230025975
    Abstract: A device is described that includes a carrier that has a plurality of light-emitting diode (LED) mounting areas. Each of the LED mounting areas includes a pair of contact pads, which are electrically coupled to the LED mounting area in a first subset of the plurality of LED mounting areas or electrically connected in series with a shunting element in the respective LED mounting area in a second subset of the plurality of LED mounting areas. In some embodiments, LEDs may be placed in the first subset of the plurality of LED mounting areas.
    Type: Application
    Filed: July 21, 2022
    Publication date: January 26, 2023
    Applicant: LUMILEDS LLC
    Inventors: Chentian FENG, Xiaoke REN, Jun ZHANG
  • Publication number: 20230028468
    Abstract: Systems, devices, and methods are disclosed in which one or more light sources, a detector, a processor and a controller are configured such that light from the one or more light sources can provide illumination or projections that can reduce accidents while the vehicle is in motion and when parked and may also provide information and illumination to the driver and vehicle occupants when entering or exiting the vehicle. These systems may, for example, provide spot illumination to moving objects or pedestrians on the road surface, with the spot illumination following the moving object. Alternatively or in addition these systems may project images on the ground, for example to communicate information to occupants of the vehicle, to occupants of another vehicle, or to pedestrians.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 26, 2023
    Applicant: LUMILEDS LLC
    Inventors: Michael CAMRAS, Jyoti Kiron BHARDWAJ
  • Patent number: 11563148
    Abstract: A semiconductor light-emitting device includes a junction between doped semiconductor layers, a first set of multiple independent contacts connected to a first doped layer and a second set of one or more contacts connected to the second doped layer. Multiple conductive vias connect the independent contacts to the first doped layer, enabling differing corresponding via currents to be applied to the first doped layer through the vias independent of one another. A spatial distribution of via currents among the multiple vias can be selected to yield a corresponding spatial distribution of emission intensity. Alteration of the via current distribution results in corresponding alteration of the emission intensity distribution; such alterations can be implemented dynamically. Multiple devices can be arranged as a light-emitting array.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: January 24, 2023
    Assignee: Lumileds LLC
    Inventors: Toni Lopez, Floris Crompvoets
  • Patent number: 11563141
    Abstract: A method includes mounting a ceramic phosphor on an acrylic-free and metal-containing catalyst-free tacky layer of a dicing tape, dicing the ceramic phosphor from the dicing tape into ceramic phosphor plates, removing the ceramic phosphor plates from the dicing tape, and attaching the ceramic phosphor plates on light-emitting device (LED) dies.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: January 24, 2023
    Assignee: Lumileds LLC
    Inventors: April Schricker, Niek Van Leth, Daniel Roitman
  • Patent number: 11560994
    Abstract: A lighting device includes a carrier having at least one section that has a triangular cross section. The carrier includes at least one mounting portion on an edge of the triangular cross section, and a heat sink body portion adjacent to, and protruding sidewards from, the at least one mounting portion. At least one structure is mounted to the at least one mounting portion. The at least one structure includes at least one mounting face having an arrangement direction. The at least one lighting module is mounted along the arrangement direction on the at least one mounting face. The at least one light guide is optically coupled to the at least one lighting module.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: January 24, 2023
    Assignee: Lumileds LLC
    Inventors: Floris Maria Hermansz Crompvoets, Matthias Epmeier, Florent Monestier
  • Patent number: 11563150
    Abstract: An inorganic coating may be applied to bond optically scattering particles or components. Optically scattering particles bonded via the inorganic coating may form a three dimensional film which can receive a light emission, convert, and emit the light emission with one or more changed properties. The inorganic coating may be deposited using a low-pressure deposition technique such as an atomic layer deposition (ALD) technique. Two or more components, such as an LED and a ceramic phosphor layer may be bonded together by depositing an inorganic coating using the ALD technique.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: January 24, 2023
    Assignee: Lumileds LLC
    Inventors: Michael Camras, Jyoti Bhardwaj, Peter Josef Schmidt, Niels Jeroen Van Der Veen
  • Publication number: 20230020077
    Abstract: A composite array has two two-dimensional arrays on a substrate each having two rows of LEDs. The LEDs in each array have the same orientation as all other LEDs in that array. First electrical traces sequentially couple LEDs in the first string and the second string by beginning at opposite corners of the composite array and alternating between rows of each of the first and second arrays. A second electrical trace couples ends of the first and second strings across rows of the composite array. Third electrical traces route outside the composite array and are coupled, respectively, to a beginning of the first string for the row of the composite array containing the beginning of the first string, a beginning of the second string for the other row, the end of the first LED string for the other row, and electrodes of LEDs in the other row.
    Type: Application
    Filed: July 11, 2022
    Publication date: January 19, 2023
    Applicant: LUMILEDS LLC
    Inventor: Michael Deckers
  • Patent number: 11557703
    Abstract: A first pixel with a first pixel sidewall is disclosed. A second pixel with a second pixel sidewall facing the first pixel sidewall is also disclosed. A first dynamic optical isolation material between the first pixel sidewall and the second pixel sidewall and configured to change an optical state based on a state trigger such that a light behavior at the first pixel sidewall for a light emitted by one of the first pixel and the second pixel is determined by the optical state, is also disclosed.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: January 17, 2023
    Assignee: Lumileds LLC
    Inventors: Kentaro Shimizu, Marcel Rene Bohmer, Daniel Estrada, Jacobus Johannes Franciscus Gerardus Heuts
  • Patent number: 11553124
    Abstract: An apparatus is disclosed including: a light source, a Fresnel lens, and a lens array. The Fresnel lens is disposed upstream from the light source to collimate light output by the light source. The lens array is disposed upstream from the Fresnel lens to mix collimated light that is output from the Fresnel lens. The lens array includes a plurality of optical elements arranged on a substrate. Each optical element includes a respective first planar surface arranged to face towards a different respective portion of the Fresnel lens and a second convex surface arranged to face away from the Fresnel lens.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: January 10, 2023
    Assignee: Lumileds LLC
    Inventor: Xueqin Lin
  • Patent number: 11553597
    Abstract: Inter-alia, a method for manufacturing a three-dimensional light emitting appliance is disclosed, said method comprising: providing a first data model of a three-dimensional area; arranging a plurality of spots for light emitting devices on the three-dimensional area of the first data model, wherein the plurality of spots is substantially evenly distributed over at least a part of the three-dimensional area; transforming the first data model of the three-dimensional area comprising the spots into a substantially two-dimensional and flat second data model, wherein the position of the spots on the second data model is derived; manufacturing a printed circuit board in accordance with the second data model and arranging pads of the printed circuit board on the spots of the second data model; equipping the pads of the printed circuit board with light emitting devices; and bringing the printed circuit board into the shape of the three-dimensional area.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: January 10, 2023
    Assignee: Lumileds LLC
    Inventor: Barbara Muelders
  • Patent number: 11549653
    Abstract: A lighting device according to the invention comprises at least one semiconductor layer; at least one light emission surface comprising an array of high luminance areas configured to emit light at a first local luminance level and low luminance areas configured to emit no light or to emit light at a second local luminance level lower than the first local luminance level; a plurality of semiconductor light emitting devices formed in the semiconductor layer to define the plurality of high luminance areas; wherein the high luminance areas and the low luminance areas are arranged in accordance with a predefined light emission profile of the light emission surface.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: January 10, 2023
    Assignee: LUMILEDS LLC
    Inventors: Barbara Muelders, Floris Maria Hermansz Crompvoets, Benno Spinger
  • Patent number: 11552225
    Abstract: Embodiments include a device having a micro-LED that includes at least two, individually addressable light emitting diodes on a same substrate; a phosphor converter layer disposed on the micro-LED, the phosphor converter layer including phosphor particles having a D50 of greater than 1 ?m and less than 10 ?m.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: January 10, 2023
    Assignee: Lumileds LLC
    Inventors: Hans-Helmut Bechtel, Jens Meyer, Matthias Heidemann, Petra Huppertz, Joerg Feldmann
  • Publication number: 20230002671
    Abstract: This specification discloses methods of enhancing the stability and performance of Eu2+ doped narrow band red emitting phosphors. In one embodiment the resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr4C4 crystal structure type and having a composition of AE1?xLi3?2yAl1+y?zSizO4?4y?zN4y+z:Eux (AE=Ca, Sr, Ba, or a combination thereof, 0<x<0.04, 0?y<1, 0<z<0.05, y+z?1). It is believed that the formal substitution (Al,O)+ by (Si,N)+ reduces the concentration of unwanted Eu3+ and thus enhances properties of the phosphor such as stability and conversion efficiency.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 5, 2023
    Applicant: LUMILEDS LLC
    Inventors: Peter Josef SCHMIDT, Philipp-Jean STROBEL, Volker WEILER, Andreas TÜCKS
  • Publication number: 20230006093
    Abstract: Described are light emitting diode (LED) devices including a combination of electroluminescent quantum wells and photo-luminescent active regions in the same wafer. A first group of QWs with shortest emission wavelength is placed between the p- and n-layers of a p-n junction. Other groups of QWs with longer wavelengths are placed outside the p-n junction in a part of the LED structure where electrical injection of minority carriers does not occur. Electroluminescence emitted by the first group of QWs is absorbed by other group(s) and re-emitted as longer wavelength light. The color of an individual die made on the wafer can be controlled by either etching away unwanted groups of longer-wavelength QWs at the position of that die, or keeping them intact. Wavelength-selective mirrors that increase down conversion efficiency may be selectively applied to die where longer wavelength emission is desired.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 5, 2023
    Applicant: Lumileds LLC
    Inventors: Isaac Wildeson, Robert Armitage
  • Patent number: 11545597
    Abstract: A light emitting device includes an LED having a (e.g., top) light output surface, a ceramic phosphor, and an adhesive layer positioned to attach the top of the LED to the ceramic phosphor. In one embodiment the adhesive layer is composed of multiple separate patches (regions) that define at least one channel therebetween, with the channel being open to an environment to permit oxygen permeation. The adhesive layer can be applied by a patternable dispensing system.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: January 3, 2023
    Assignee: Lumileds LLC
    Inventors: Daniel Bernardo Roitman, Michael Laughner
  • Publication number: 20220415863
    Abstract: This specification discloses LED arrays comprising a grid structure that physically and optically isolates adjacent LEDs or groups of LEDs in the array from each other. The grid structure comprises an arrangement of walls defining cells. Individual LEDs or groups of LEDs in the array are positioned within different ones of the cells, separated from adjacent LEDs or groups of LEDs by the grid walls. This specification also discloses fabrication processes for such LED arrays. In these fabrication processes, the grid structure is formed as a separate monolithic structure. The LEDs or pcLEDs are arranged on and attached to a substrate (for example, a printed circuit board), after which the grid structure is attached to the substrate in registry with the arrangement of LEDs or pcLEDs.
    Type: Application
    Filed: June 24, 2022
    Publication date: December 29, 2022
    Applicant: LUMILEDS LLC
    Inventors: Hisashi Masui, Franklin Chiang
  • Patent number: 11535798
    Abstract: A wavelength converting structure is disclosed, the wavelength converting structure including an SWIR phosphor material having emission wavelengths in the range of 1000 to 1700 nm, the SWIR phosphor material including at least one of a perovskite type phosphor doped with Ni2+, a perovskite type phosphor doped with Ni2+ and Cr3+, and a garnet type phosphor doped with Ni2+ and Cr3+.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: December 27, 2022
    Assignee: Lumileds LLC
    Inventors: Peter Josef Schmidt, Detlef Wiechert
  • Patent number: 11530797
    Abstract: A lighting device contains light-emitting elements and has an elongated shape. The lighting device has a housing that has reflective side walls extending in a longitudinal direction of the housing; a cavity formed between the reflective side walls; and light-emitting elements arranged at least partially along the longitudinal direction relative to each other in the cavity. An opening of the cavity forms a light-emitting area, A width of the cavity expands from the light-emitting elements towards the opening at least in sections. A reflective element covers at least a section of the opening and reflects a part of light emitted from the light-emitting elements towards the cavity and reduces a width of the light-emitting area compared to a width of the opening.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: December 20, 2022
    Assignee: Lumileds LLC
    Inventors: Christian Kleijnen, Floris Maria Hermansz Crompvoets, Benno Spinger, Thorsten Anger
  • Patent number: D973245
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: December 20, 2022
    Assignee: LUMILEDS LLC
    Inventors: Marcel Borgen, Josef Schug, Wilbert Heffels, Juergen Mertens, Marc Kessels
  • Patent number: D973246
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: December 20, 2022
    Assignee: LUMILEDS LLC
    Inventors: Marcel Borgen, Josef Schug, Juergen Mertens, Wilbert Heffels