Patents by Inventor Wan Leng LIM

Wan Leng LIM 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).

  • Patent number: 11990574
    Abstract: In an embodiment, a method for producing optoelectronic semiconductor devices includes applying a temporal spacer to protect a light-exit face of an optoelectronic semiconductor chip by applying a photoresist onto a first carrier, subsequently developing the photoresist in places thereby forming the temporal spacer and subsequently mounting the optoelectronic semiconductor chip onto a side of the temporal spacer facing away from the first carrier, forming a reflector in a lateral direction directly around the optoelectronic semiconductor chip and around the temporal spacer, subsequently removing the temporal spacer so that the reflector extends beyond the light-exit face and applying an optical element onto the reflector so that a gap exists between the light-exit face and a light-entrance face of the optical element.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: May 21, 2024
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Choo Kean Lim, Xiao Fen Hoo, Wan Leng Lim, Ai Cheng Chan
  • Publication number: 20220165924
    Abstract: In an embodiment, a method for producing optoelectronic semiconductor devices includes applying a temporal spacer to protect a light-exit face of an optoelectronic semiconductor chip by applying a photoresist onto a first carrier, subsequently developing the photoresist in places thereby forming the temporal spacer and subsequently mounting the optoelectronic semiconductor chip onto a side of the temporal spacer facing away from the first carrier, forming a reflector in a lateral direction directly around the optoelectronic semiconductor chip and around the temporal spacer, subsequently removing the temporal spacer so that the reflector extends beyond the light-exit face and applying an optical element onto the reflector so that a gap exists between the light-exit face and a light-entrance face of the optical element.
    Type: Application
    Filed: March 8, 2019
    Publication date: May 26, 2022
    Inventors: Choo Kean Lim, Xiao Fen Hoo, Wan Leng Lim, Ai Cheng Chan
  • Publication number: 20220109282
    Abstract: The invention refers to electronic devices (D) and to a method for obtaining electronic devices (D) comprising, electronic elements, in particular optoelectronic elements (7), the method comprising the steps of:—providing (S1) a substrate from which first walls (1) protrude along a Z-axis towards an open end side forming at least one rectangle along a X-Y-plane surrounding a respective at least one space(S);—positioning (S2) a respective electronic element (7a), in particular optoelectronic element (7),within the respective space(S)and connecting it to contact pads (9);—attaching (S3) a respective functional element (11a), in particular optical element (11), in particular a lens, at the open end side of respective first wall (1) to cover the respective space (S);—forming a second wall (2) by surrounding (S4) the respective functional element (11a), in particular optical element (11), with a darn material.
    Type: Application
    Filed: January 17, 2019
    Publication date: April 7, 2022
    Inventors: Markus BOSS, Chai Liang LOKE, Zeljko PAJKIC, Wan Leng LIM
  • Publication number: 20210359183
    Abstract: An optoelectronic semiconductor device includes a substrate with a first main side and a second main side. A plurality of light-emitting semiconductor chips is distributed over the first main side and over the second main side. A molding compound encloses the light-emitting semiconductor chips in a lateral direction. The molding compound levels with the light-emitting semiconductor chips in a direction away from the substrate. The molding compound has a top side facing away from the substrate. A plurality of planar electrical interconnects run on the top side and electrically connects the light-emitting semiconductor chips on their radiation exit sides facing away from the substrate.
    Type: Application
    Filed: August 2, 2018
    Publication date: November 18, 2021
    Inventors: Lay Sin KHOO, Choon Keat OR, Choon Sim ONG, Wan Leng LIM, Keng Chong LIM, Choo Kean LIM