METHOD OF MANUFACTURING SEMICONDUCTOR DEVICES AND CORRESPONDING SEMICONDUCTOR DEVICE

    公开(公告)号:US20220028769A1

    公开(公告)日:2022-01-27

    申请号:US17498328

    申请日:2021-10-11

    摘要: A semiconductor chip is mounted on a leadframe. A first portion of an insulating package for the semiconductor chip is formed from laser direct structuring (LDS) material molded onto the semiconductor chip. A conductive formation (provided by laser-drilling the LDS material and plating) extends between the outer surface of the first portion of insulating package and the semiconductor chip. An electrically conductive clip is applied onto the outer surface of the first portion of the insulating package, with the electrically conductive clip electrically coupled to the conductive formation and the leadframe. A second portion of the insulating package is made from package molding material (epoxy compound) molded onto the electrically conductive clip and applied onto the outer surface of the first portion of the insulating package.

    Conductor trace structure reducing insertion loss of circuit board

    公开(公告)号:US11178773B2

    公开(公告)日:2021-11-16

    申请号:US16949509

    申请日:2020-10-30

    申请人: Sheng-Kun Lan

    发明人: Sheng-Kun Lan

    摘要: A conductor trace structure reducing insertion loss of circuit board, the circuit board laminates an outer layer circuit board, an inner layer circuit board and a glass fiber resin films which arranged between each board; before laminated process, the conductor traces of the inner layers had formed by etching of imaging transfer process and conductor traces had been roughed process for making the glass fiber resin films having good adhesive performance during laminating; before etching of imaging transfer process that forms the conductor traces of the outer layers or solder resist coat process or coating polymer materials, the conductor traces have been roughed process to make insulating resin layer of the solder resist coat or polymer materials to has better associativity; wherein a smooth trench is formed by physical or chemical process constructed on the roughed conductor traces surface to guide electric ions transmitted on these smooth trench surface to enhance electric ions transmission rate, resulting in reducing the impedance so as to achieve reducing insertion loss.

    Method of fastening a semiconductor chip on a lead frame, and electronic component

    公开(公告)号:US11094559B2

    公开(公告)日:2021-08-17

    申请号:US16604252

    申请日:2018-04-18

    申请人: OSRAM OLED GmbH

    摘要: A method of attaching a semiconductor chip on a lead frame includes A) providing a semiconductor chip, B) applying a solder metal layer sequence to the semiconductor chip, wherein the solder metal layer sequence includes a first metallic layer including indium or an indium-tin alloy, C) providing a lead frame, D) applying a metallization layer sequence to the lead frame, wherein the metallization layer sequence includes a fourth layer including indium and/or tin arranged above the lead frame and a third layer including gold arranged above the fourth layer, E) forming an intermetallic intermediate layer including gold and indium, gold and tin or gold, tin and indium, G) applying the semiconductor chip to the lead frame via the solder metal layer sequence and the intermetallic intermediate layer, and H) heating the arrangement produced in G) to attach the semiconductor chip to the lead frame.

    Method for manufacturing semiconductor device

    公开(公告)号:US11075091B2

    公开(公告)日:2021-07-27

    申请号:US16630974

    申请日:2017-10-26

    摘要: In a first step of a method of manufacturing a semiconductor device, a portion to be the first lead frame is formed by selectively punching a metal plate, furthermore, notch portions depressed in the reference direction are formed on both side surfaces of a portion, of the first lead frame where the first bent portion is formed, in line contact with the first conductive layer in the reference direction; in the second step of the method, a first bent portion is formed by bending the one end of the first lead frame so as to protrude downward along the reference direction; and in the third step of the method, the upper surface of the first conductive layer and the lower surface of the first bent portion of the first lead frame are joined at the end of the substrate, by the first conductive bonding material, furthermore, the upper surface of the first conductive layer and the notch portions of the first bent portion are joined, by embedding a part of the first conductive bonding material in the notch portions.