Patents by Inventor Rajiv Pathak

Rajiv Pathak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250221103
    Abstract: AlInGaP LEDs and microLEDs comprise a transparent conductive oxide (TCO) layer disposed on and making Ohmic contact to an n-type AlInGaP layer. The TCO layer may be used to make electrical contact to the n-type side of the diode junction in the LED without obstructing transmission of light out of the LED through the n-type surface on which the TCO layer is disposed. The TCO layer may improve n-side current spreading. The TCO layer may be used to interconnect the n-side contacts of adjacent AlInGaP microLEDs in an array to form a shared n-side electrical contact with little or no optical cross-talk. The TCO layer may improve the reflectivity of an n-side metal contact arranged to direct light out of the LED.
    Type: Application
    Filed: December 27, 2023
    Publication date: July 3, 2025
    Applicant: Lumileds LLC
    Inventors: Zhongmin Ren, Rajiv Pathak
  • Publication number: 20250056921
    Abstract: Micro-light emitting diode (uLED) devices comprise: a source wafer comprising a uLED die bonded to a target wafer. Wafer n-contacts are directly bonded to a plurality of die n-contacts; wafer p-contacts are directly bonded to die p-contacts; and wafer dielectric material is directly bonded to die dielectric material; the wafer dielectric material isolates the wafer n-contacts and the wafer p-contacts.
    Type: Application
    Filed: December 13, 2022
    Publication date: February 13, 2025
    Applicant: Lumileds LLC
    Inventors: Erik William Young, Rajiv Pathak
  • Patent number: 11935987
    Abstract: A light emitting diode (LED) array comprises non-segmented pixels in a light-emitting pixel area providing optical efficiency and minimizing dark-grid appearance. The LED array comprises: a monolithic body, a light-emitting pixel area, a plurality of anodes, a common cathode, and one or more dielectric materials. The light-emitting pixel area is integral to the monolithic body. The light-emitting pixel area includes semiconductor layers comprising: a second portion of an N-type layer, an active region, and a P-type layer. The monolithic body comprises a first portion of an N-type layer, and the second portion of the N-type layer is integral to the first portion of the N-type layer. Each anode comprises a P-contact layer and one or more P-contact materials, each P-contact layer is in contact with the P-type layer. The common cathode comprises one or more N-contact materials in contact with the first portion of the N-type layer.
    Type: Grant
    Filed: October 25, 2022
    Date of Patent: March 19, 2024
    Assignee: Lumileds LLC
    Inventors: Toni Lopez, Erik William Young, Rajiv Pathak
  • Publication number: 20230133315
    Abstract: A light emitting diode (LED) array comprises non-segmented pixels in a light-emitting pixel area providing optical efficiency and minimizing dark-grid appearance. The LED array comprises: a monolithic body, a light-emitting pixel area, a plurality of anodes, a common cathode, and one or more dielectric materials. The light-emitting pixel area is integral to the monolithic body. The light-emitting pixel area includes semiconductor layers comprising: a second portion of an N-type layer, an active region, and a P-type layer. The monolithic body comprises a first portion of an N-type layer, and the second portion of the N-type layer is integral to the first portion of the N-type layer. Each anode comprises a P-contact layer and one or more P-contact materials, each P-contact layer is in contact with the P-type layer. The common cathode comprises one or more N-contact materials in contact with the first portion of the N-type layer.
    Type: Application
    Filed: October 25, 2022
    Publication date: May 4, 2023
    Applicant: Lumileds LLC
    Inventors: Toni Lopez, Erik William Young, Rajiv Pathak