Solder joint
    1.
    发明授权

    公开(公告)号:US11628519B2

    公开(公告)日:2023-04-18

    申请号:US17357443

    申请日:2021-06-24

    摘要: A solder joint, for bonding an electrode of a circuit board to an electrode of an electronic component, that includes: an Sn—Bi-based solder deposited on the electrode of the circuit board; and a solder alloy deposited on the electrode of the electronic component. The Sn—Bi-based solder alloy has a lower melting point than the solder alloy deposited on the electrode of the electronic component. Fine Bi phases in the solder joint each have an area of less than or equal to 0.5 μm2. Coarse Bi phases in the solder joint each have an area of greater than 0.5 μm2 and less than or equal to 5 μm2. A proportion of the fine Bi phases among the fine Bi phases and the coarse Bi phases is greater than or equal to 60%.

    Device for manufacturing electric component and method for manufacturing electric component

    公开(公告)号:US11618107B2

    公开(公告)日:2023-04-04

    申请号:US16941125

    申请日:2020-07-28

    摘要: An electric component manufacturing device includes a preheater that contacts and preheats a transported work, a melting heater that is downstream of the preheater in a transport direction of the work and contacts and heats the work at a temperature which is higher than a temperature of the preheater and at which a solder melts, a cooler that is downstream of the melting heater in the transport direction and contacts and cools the work, and a transporter that supports and transports the work to sequentially contact the preheater, the melting heater, and the cooler in this order. The transporter performs intermittent transport in which the work is transported from the preheater to the melting heater without stopping to contact both the preheater and the melting heater at the same time, and then the work stops on the melting heater.

    Joining device and joining method

    公开(公告)号:US11612955B2

    公开(公告)日:2023-03-28

    申请号:US17120542

    申请日:2020-12-14

    摘要: A joining device and method for laser-based joining of two components includes a first laser radiation source, a first radiation guide connected to the first radiation source to couple first laser radiation into the first radiation guide, a second laser radiation source, at least one second radiation guide connected to the second radiation source to couple second laser radiation into the second radiation guide, and a focusing device coupled to the laser radiations and focusing them at a distance from each other into a joining zone of the components. To reduce installation effort, the focusing device focuses the first and second laser radiations through a common beam path and a coupling device is connected on its input side to the first and second radiation guides and on its output side to the focusing device. The coupling device couples the first and second laser radiations into the common beam path.

    SEMICONDUCTOR DIE DIPPING STRUCTURE

    公开(公告)号:US20230023353A1

    公开(公告)日:2023-01-26

    申请号:US17677702

    申请日:2022-02-22

    摘要: A die dipping structure includes a plate including a first recessed portion having a first depth and filled with a first flux material. The plate further includes a second recessed portion, isolated from the first recessed portion, with a second depth and filled with a second flux material. The second depth is different from the first depth. The die dipping structure further includes a motor configured to move the plate so as to simultaneously dip a first die and a second die into the flux of the first recessed portion and the flux of the second recessed portion, respectively.

    CERAMIC SUBSTRATE AND CERAMIC SUBSTRATE MANUFACTURING METHOD

    公开(公告)号:US20220316071A1

    公开(公告)日:2022-10-06

    申请号:US17607996

    申请日:2020-03-25

    发明人: Ji-Hyung LEE

    IPC分类号: C23F1/02 B23K1/20

    摘要: The present invention is a method of manufacturing a ceramic substrate, the method including forming a mask on one surface of a metal layer, forming an inclined protrusion by etching the metal layer exposed by the mask, and bonding the metal layer on which the inclined protrusion is formed to a ceramic base material, and according to the present invention, the inclined protrusion is formed on an outer perimeter of the metal layer bonded to the ceramic base material to increase a bonding strength between the ceramic base material and the metal layer and facilitate a metal layer etching process.