Global Patent Index - EP 1254484 A2

EP 1254484 A2 2002-11-06 - PIEZOELECTRIC SUBSTRATE MATERIAL WITH AN INCREASED RESISTANCE TO BREAKING AND METHOD FOR PRODUCING THE SAME

Title (en)

PIEZOELECTRIC SUBSTRATE MATERIAL WITH AN INCREASED RESISTANCE TO BREAKING AND METHOD FOR PRODUCING THE SAME

Title (de)

PIEZOELEKTRISCHES SUBSTRATMATERIAL MIT ERHÖHTER BRUCHFESTIGKEIT UND HERSTELLUNGSVERFAHREN

Title (fr)

MATERIAU SUBSTRAT PIEZO-ELECTRIQUE DE RESISTANCE A LA RUPTURE AMELIOREE ET SON PROCEDE DE PRODUCTION

Publication

EP 1254484 A2 (DE)

Application

EP 01919125 A

Priority

  • DE 0100405 W
  • DE 10005596 A

Abstract (en)

[origin: WO0159853A2] The aim of the invention is to increase resistance to breaking and to prevent optical reflections during structuring for producing components on piezoelectric substrates. To this end, an absorber layer (2) which has high optical absorption, binds particles and seals cracks is provided on the rear side of the substrate (1). The absorber layer (2) is advantageously also electroconductive in order to be able to divert pyroelectric charges.

[origin: WO0159853A2] The aim of the invention is to increase the resistance to breaking of components on piezoelectric substrates. To this end, an absorber layer which has high optical absorption, binds particles and seals cracks is provided on the rear side of the substrate.

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

H01L 41/08; G03F 7/09; H03H 3/08

IPC 8 full level (invention and additional information)

H01L 41/09 (2006.01); H01L 41/04 (2006.01); H01L 41/18 (2006.01); H01L 41/22 (2006.01); H03H 3/08 (2006.01); H03H 9/02 (2006.01); H03H 9/25 (2006.01)

CPC (invention and additional information)

H01L 41/04 (2013.01); H03H 3/08 (2013.01); H03H 9/02622 (2013.01)

Citation (search report)

See references of WO 0159853A3

Designated contracting state (EPC)

AT BE CH CY DE FR GB LI

EPO simple patent family

WO 0159853 A2 20010816; WO 0159853 A3 20020221; CA 2399122 A1 20010816; DE 10005596 A1 20010816; EP 1254484 A2 20021106; JP 2003523117 A 20030729

INPADOC legal status


2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): AT BE CH CY DE FR GB LI

2004-03-03 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030902

2002-11-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020625

2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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