公开(公告)号：US20210335524A1

公开(公告)日：2021-10-28

申请号：US17278130

申请日：2019-09-17

Applicant: KOA CORPORATION

Inventor： Homare KANEKO ,  Natsumi SHIOBARA ,  Yasushi HIROSHIMA

IPC: H01C10/10 ,  H01C1/14 ,  G01B7/16

Abstract: A strain sensor resistor includes: a resistive element (thin-film strain-resistive layer) formed nearly at the center of an upper surface of an insulation substrate to be a base; and front surface electrodes layered and formed on either end part of the resistive element and electrically connected to the resistive element. The entire upper part of the resistive element and a part of the front surface electrodes are covered by a protective film (protective coating). Moreover, back surface electrodes electrically connected to the front surface electrodes are formed on either lower end part of the insulation substrate, and end surface electrodes are formed on either longitudinal end surface of the insulation substrate. The strain sensor resistor has a tip shape solder mountable on a circuit board etc. using the back surface electrodes.

公开(公告)号：US20190035520A1

公开(公告)日：2019-01-31

申请号：US16072318

申请日：2017-01-23

Applicant: KOA CORPORATION

Inventor： Yasushi HIROSHIMA

IPC: H01C1/028 ,  H01L49/02 ,  H01C17/16 ,  C23C14/06 ,  H01C7/00 ,  H01L23/522 ,  C23C16/40

CPC classification number: H01C1/028 ,  B23K26/382 ,  C23C14/0652 ,  C23C16/402 ,  H01C1/032 ,  H01C1/14 ,  H01C7/006 ,  H01C7/023 ,  H01C17/02 ,  H01C17/12 ,  H01C17/16 ,  H01L23/5228 ,  H01L28/24

Abstract: Provided is a thin-film chip resistor including an insulating substrate; a thin-film resistive element formed on the substrate; a pair of electrodes connected to the thin-film resistive element; and a protective film covering at least the thin-film resistive element between the pair of electrodes, in which the protective film includes a first protective film and a second protective film, the first protective film containing silicon nitride in contact with the thin-film resistive element, and the second protective film containing silicon oxide in contact with the first protective film.

公开(公告)号：US20170011826A1

公开(公告)日：2017-01-12

申请号：US15201099

申请日：2016-07-01

Applicant: KOA CORPORATION

Inventor： Yasushi HIROSHIMA

IPC: H01C7/06 ,  H01C17/12 ,  H01C7/02 ,  H01C7/00 ,  H01C7/04

CPC classification number: H01C7/06 ,  H01C7/006 ,  H01C7/021 ,  H01C7/022 ,  H01C7/041 ,  H01C7/042 ,  H01C17/12

Abstract: Provided is a thin-film resistor that has a higher resistance value than the conventional thin-film resistors while retaining excellent TCR characteristics. The thin-film resistor includes a substrate, a pair of electrodes formed on the substrate, and a resistive film connected to the pair of electrodes. The resistive film includes a first resistive film and a second resistive film, the second resistive film having a different TCR from that of the first resistive film, and each of the first resistive film and the second resistive film contains Si, Cr, and N as the main components.

Abstract translation: 提供了一种薄膜电阻器，其具有比常规薄膜电阻器更高的电阻值，同时保持优异的TCR特性。 薄膜电阻器包括基板，形成在基板上的一对电极和连接到该对电极的电阻膜。 所述电阻膜包括第一电阻膜和第二电阻膜，所述第二电阻膜具有与所述第一电阻膜不同的TCR，并且所述第一电阻膜和所述第二电阻膜中的每一个包含Si，Cr和N作为 主要组成部分。