Global Patent Index - EP 1002340 A2

EP 1002340 A2 2000-05-24 - TUNABLE DIELECTRIC FLIP CHIP VARACTORS

Title (en)

TUNABLE DIELECTRIC FLIP CHIP VARACTORS

Title (de)

ABSTIMMBARE DIELEKTRISCHE FLIP-CHIP-VARAKTOREN

Title (fr)

VARACTORS DIELECTRIQUES ACCORDABLES A PUCES A BOSSES

Publication

EP 1002340 A2 (EN)

Application

EP 97946303 A

Priority

  • US 9719334 W
  • US 2916296 P

Abstract (en)

[origin: WO9820606A2] The present invention is directed to a method for forming electrically tunable varactors independently of the circuit in which the varactors are to be incorporated. In the method, a tunable dielectric material is deposited on a substrate, subjected to thermal treatment to reduce crystalline defects, metallized, and the layered structure subdivided into a number of varactors. The varactors are bonded using flip chip techniques to a circuit. The present invention further provides varactors having differing configurations. One varactor configuration includes stacked conductor pairs separated by a nontunable insulating material having a low electric permittivity.

IPC 1-7 (main, further and additional classification)

H01L 29/93; H01G 7/06; H03B 19/05

IPC 8 full level (invention and additional information)

H01L 27/08 (2006.01)

CPC (invention and additional information)

H01L 27/0808 (2013.01)

Designated contracting state (EPC)

BE CH DE DK ES FI FR GB IE IT LI LU NL PT SE

EPO simple patent family

WO 9820606 A2 19980514; WO 9820606 A3 19980625; AU 5150298 A 19980529; EP 1002340 A2 20000524; EP 1002340 A4 20000524

INPADOC legal status


2001-11-28 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010502

2000-05-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990527

2000-05-24 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000211

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): BE CH DE DK ES FI FR GB IE IT LI LU NL PT SE

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): BE CH DE DK ES FI FR GB IE IT LI LU NL PT SE

2000-05-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL PAYMENT 19990527;LT PAYMENT 19990527;LV PAYMENT 19990527;RO PAYMENT 19990527;SI PAYMENT 19990527