MULTILAYER WIRING SUBSTRATE
    2.
    发明申请

    公开(公告)号:US20200296839A1

    公开(公告)日:2020-09-17

    申请号:US16814902

    申请日:2020-03-10

    IPC分类号: H05K3/24 H01L21/48 H01L23/538

    摘要: A cavity elongated in one direction is formed in a protective film covering the conductive pattern of the topmost conductive layer of a multilayer wiring substrate. The cavity exposes part of the conductive pattern. A first via-conductor extends downward from the conductive pattern of the topmost conductive layer at least until that of a second conductive layer. Second via-conductors extend downward from the conductive pattern of the second or third conductive layer at least until that of a conductive layer one below. As viewed from above, the first via-conductor and the cavity partially overlap each other. At least two second via-conductors are disposed to sandwich the cavity therebetween. The difference between the smallest gap between the cavity and the second via-conductor at one side and that between the cavity and the second via-conductor at the other side is smaller than the smallest gap between the cavity and the second via-conductors.

    POWER AMPLIFIER MODULE
    3.
    发明申请

    公开(公告)号:US20190109066A1

    公开(公告)日:2019-04-11

    申请号:US16153310

    申请日:2018-10-05

    摘要: A power amplifier module includes a substrate including, in an upper surface of the substrate, an active region and an element isolation region. The power amplifier module further includes a collector layer, a base layer, and an emitter layer that are stacked on the active region; an interlayer insulating film that covers the collector layer, the base layer, and the emitter layer; a pad that is thermally coupled to the element isolation region; and an emitter bump that is disposed on the interlayer insulating film, electrically connected to the emitter layer through a via hole provided in the interlayer insulating film, and electrically connected to the pad. In plan view, the emitter bump partially overlaps an emitter region which is a region of the emitter layer and through which an emitter current flows.

    POWER AMPLIFIER MODULE
    6.
    发明申请

    公开(公告)号:US20200186094A1

    公开(公告)日:2020-06-11

    申请号:US16789827

    申请日:2020-02-13

    摘要: A power amplifier module includes an amplifier transistor and a bias circuit. A first power supply voltage based on a first operation mode or a second power supply voltage based on a second operation mode is supplied to the amplifier transistor. The amplifier transistor receives a first signal and outputs a second signal obtained by amplifying the first signal. The bias circuit supplies a bias current to the amplifier transistor. The bias circuit includes first and second resistors and first and second transistors. The first transistor is connected in series with the first resistor and is turned ON by a first bias control voltage which is supplied when the first operation mode is used. The second transistor is connected in series with the second resistor and is turned ON by a second bias control voltage which is supplied when the second operation mode is used.

    AMPLIFIER MODULE
    9.
    发明申请

    公开(公告)号:US20210327775A1

    公开(公告)日:2021-10-21

    申请号:US17224784

    申请日:2021-04-07

    IPC分类号: H01L23/13 H05K1/02 H01L23/00

    摘要: An amplifier IC mounted on a multilayer board includes input, output, and common terminals. The multilayer board includes common, input, and output terminals on board side. These terminals are connected to the corresponding terminals on device side via bumps. On the lower surface of the multilayer board, a lower surface common terminal is arranged at a location overlapping the common terminal in plan view. First, second, and third via conductors are sequentially arranged toward the lower surface common terminal from the common terminal. An input via conductor is connected to the input terminal on board side. In plan view, the area of the first common via conductor is larger than any one of the areas of the second and third common via conductors and the input via conductor. In plan view, the area of bump of the common terminal is larger than the area of bump of the input terminal.

    POWER AMPLIFICATION MODULE
    10.
    发明申请

    公开(公告)号:US20210194444A1

    公开(公告)日:2021-06-24

    申请号:US17123230

    申请日:2020-12-16

    摘要: A semiconductor chip includes a plurality of transistor rows. Corresponding to the plurality of transistor rows, a first bump connected to a collector of the transistor is arranged, and a second bump connected to an emitter is arranged. The transistor rows are arranged along sides of a convex polygon. A first land and a second land provided in a circuit board are connected to the first bump and the second bump, respectively. A first impedance conversion circuit connects the first land and the signal output terminal. A plurality of transistors in the transistor row are grouped into a plurality of groups, and the first impedance conversion circuit includes a reactance element arranged for each of the groups.