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    • 5. 发明专利
    • DE602006011671D1
    • 2010-03-04
    • DE602006011671
    • 2006-04-19
    • TDK CORP
    • ENDOU KENJIHATANAKA KIYOSHIHIRAKAWA MASAHARUNISHINO HARUOFUJIOKA HIDEAKI
    • H01L21/48H01L23/13H01L23/15H05K3/46
    • A multilayer ceramic substrate having a cavity is formed by the steps of laminating a plurality of ceramic green sheets (61-69) including ceramic green sheets (63-69) having through holes corresponding to the cavity (11) to form a multilayer body, pressing the multilayer body and firing the pressed body. At this time, shrinkage suppression green sheets (72,73) are laminated on the surfaces of the ceramic green sheets constituting the outermost layers of the multilayer body, and a shrinkage suppression green sheet piece (70a) is disposed on the ceramic green sheet exposed to the bottom of the cavity in accordance with the shape of the cavity A burnable sheet piece (71a) is further disposed on the shrinkage suppression green sheet piece. Before the pressing step, an embedded green sheet (74) separate from the ceramic green sheets (portion separated by inserting a cut) is disposed on the shrinkage suppression green sheet piece or the burnable sheet piece so that it is filled in the cavity. After the firing step, the embedded green sheet fired (75) is removed.
    • 6. 发明专利
    • DE60217022D1
    • 2007-02-08
    • DE60217022
    • 2002-07-09
    • TDK CORP
    • TASHIRO KOUJITAKUBO OSAMUENDOU KENJI
    • H01P1/20H01P1/205H01P1/213H01P7/04
    • The invention is directed to a dielectric device that comprises a dielectric substrate (1) and at least one resonator unit (Q1). The dielectric substrate (1) comprises an outer surface covered with an external conductor film (3), excluding at least one end surface (21). The resonator unit (Q1) comprises a first hole (41) and a second hole (51). The first hole (41) is provided in said dielectric substrate (1), extending from said end surface (21) to an opposite surface (22) thereto, being open at said end surface (21) and said opposite surface (22), and having a first internal conductor (61) inside thereof. The second hole (51) is provided in said dielectric substrate (1) at a distance from said first hole (41), extending from said end surface (21) toward said opposite surface (22), being open at said end surface (21), closed at a bottom, and having a second internal conductor (81) inside thereof. The second internal conductor (81) is connected to said first internal conductor (61) at said end surface (21). The dielectric device includes at least one portion of external conductor film (301; 302; 303; 304) on said end surface (21) adjacent to said resonator unit (Q1), whereby said resonator unit (Q1) is inductively couplable to a further resonator unit.
    • 7. 发明专利
    • DE60215749D1
    • 2006-12-14
    • DE60215749
    • 2002-09-19
    • TDK CORP
    • TASHIRO KOUJIENDOU KENJITAKUBO OSAMU
    • H01P1/205H01P1/213H01P7/04
    • The present invention relates to a dielectric device that is suitable for miniaturization and height reduction and is surface-mountable. In a resonator unit (Q1), a first hole (41) is provided to a dielectric substarate (1), extends from a surface (21) toward a surface (22) opposite thereto, opens in the surface (21), and has a first internal conductor (61) in the interior. A second hole (51) is provided to the dielectric substarate (1), opens in a surface 23 adjacent to the surface (21), extends from the surface (23) toward a surface (24) opposite thereto, and is connected with the first hole (41) in the interior of the dielectric substarate (1). The second hole (51) has a second internal conductor (81) in the interior, and the second internal conductor (81) is connected to the first internal conductor (61) in the interior of the dielectric substarate (1).
    • 8. 发明专利
    • DE60217022T2
    • 2007-07-05
    • DE60217022
    • 2002-07-09
    • TDK CORP
    • TASHIRO KOUJITAKUBO OSAMUENDOU KENJI
    • H01P1/20H01P1/205H01P1/213H01P7/04
    • The invention is directed to a dielectric device that comprises a dielectric substrate (1) and at least one resonator unit (Q1). The dielectric substrate (1) comprises an outer surface covered with an external conductor film (3), excluding at least one end surface (21). The resonator unit (Q1) comprises a first hole (41) and a second hole (51). The first hole (41) is provided in said dielectric substrate (1), extending from said end surface (21) to an opposite surface (22) thereto, being open at said end surface (21) and said opposite surface (22), and having a first internal conductor (61) inside thereof. The second hole (51) is provided in said dielectric substrate (1) at a distance from said first hole (41), extending from said end surface (21) toward said opposite surface (22), being open at said end surface (21), closed at a bottom, and having a second internal conductor (81) inside thereof. The second internal conductor (81) is connected to said first internal conductor (61) at said end surface (21). The dielectric device includes at least one portion of external conductor film (301; 302; 303; 304) on said end surface (21) adjacent to said resonator unit (Q1), whereby said resonator unit (Q1) is inductively couplable to a further resonator unit.
    • 9. 发明专利
    • DE60215749T2
    • 2007-02-08
    • DE60215749
    • 2002-09-19
    • TDK CORP
    • TASHIRO KOUJIENDOU KENJITAKUBO OSAMU
    • H01P1/205H01P1/213H01P7/04
    • The present invention relates to a dielectric device that is suitable for miniaturization and height reduction and is surface-mountable. In a resonator unit (Q1), a first hole (41) is provided to a dielectric substarate (1), extends from a surface (21) toward a surface (22) opposite thereto, opens in the surface (21), and has a first internal conductor (61) in the interior. A second hole (51) is provided to the dielectric substarate (1), opens in a surface 23 adjacent to the surface (21), extends from the surface (23) toward a surface (24) opposite thereto, and is connected with the first hole (41) in the interior of the dielectric substarate (1). The second hole (51) has a second internal conductor (81) in the interior, and the second internal conductor (81) is connected to the first internal conductor (61) in the interior of the dielectric substarate (1).