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    • 2. 发明公开
    • Wiring board and capacitor to be built into wiring board
    • 接线板和电容器要嵌入到接线板中
    • EP1691590A2
    • 2006-08-16
    • EP06002669.7
    • 2006-02-09
    • NGK Spark Plug Co., Ltd.
    • Muramatsu, MasakiYuri, ShinjiUrashima, KazuhiroYamamoto, HiroshiSeki, ToshitakeSato, Motohiko
    • H05K1/14H05K1/18H05K1/02H01G4/224
    • H01G2/06H01L23/49822H01L23/49838H01L23/50H01L24/10H01L2224/0554H01L2224/05568H01L2224/05573H01L2224/16225H01L2224/16235H01L2924/00014H01L2924/01012H01L2924/0102H01L2924/01078H01L2924/01079H01L2924/09701H01L2924/12042H01L2924/14H01L2924/1423H01L2924/15174H01L2924/15311H01L2924/3011H05K1/0231H05K1/185H05K3/4602H05K2201/10674H05K2201/10712H01L2924/00H01L2224/05599H01L2224/0555H01L2224/0556
    • An intermediate board (200) has a board core composed of a core main body (100m) and a sub-core portion (1). The core main body (100m) is formed into a plate shape by a macromolecular material, and is formed with a sub-core housing portion (100h) which is opened and formed on a first main surface by reducing its thickness. The sub-core portion (1) is formed into a plate shape by ceramic, and is housed in the sub-core housing portion (100h) so that its thicknesswise direction matches with that of the core main body (100m). A first terminal array (5) of the board core (100) is formed in a position where it overlaps the sub-core portion (1) in orthographic projection to a reference surface parallel with a plate surface of the board core (100) . The sub-core portion (1) incorporates a laminated ceramic capacitor where a first electrode conductor layer (54), a ceramic layer (52) and a second electrode conductor layer (57) are laminated periodically in this order. The first electrode conductor layer is conductive with a first side first type terminal (5a) and a second side first type terminal (7a). The ceramic layer is composed of a dielectric layer. The second electrode conductor layer is conductive with a first side second type terminal (5b) and a second side second type terminal (7b). In the sub-core housing portion (100h), an inner edge of the cross section along a plane parallel with a plate surface of the sub-core portion (1) has a quadrate shape, and a radius portion with dimension of not less than 0.1 mm to not more than 2 mm is formed on its corners.
    • 中间板(200)具有由芯主体(100m)和子芯部(1)构成的板芯。 芯主体(100m)由高分子材料形成为板状,并且形成有通过减小其厚度而在第一主表面上开口并形成的子芯容纳部(100h)。 子核心部分(1)通过陶瓷形成为板状,并且以其厚度方向与核心主体(100m)的厚度方向相匹配的方式容纳在子核心壳体部分(100h)中。 所述板芯(100)的第一端子阵列(5)以与所述板芯(100)的板面平行的基准面正交投影的方式形成在与所述子芯部(1)重叠的位置。 子核心部分(1)结合了层压陶瓷电容器,其中第一电极导体层(54),陶瓷层(52)和第二电极导体层(57)按此顺序周期性层压。 第一电极导体层与第一侧第一类型端子(5a)和第二侧第一类型端子(7a)导电。 陶瓷层由电介质层构成。 第二电极导体层与第一侧面第二类型端子(5b)和第二侧面第二类型端子(7b)导电。 在子核心容纳部(100h)中,沿着与子核心部(1)的板面平行的平面的截面的内边缘具有方形形状,并且具有不小于 在其角上形成0.1毫米至不大于2毫米。