Global Patent Index - EP 1052669 A1

EP 1052669 A1 2000-11-15 - COLOR CATHODE RAY TUBE AND PRODUCTION METHOD THEREFOR

Title (en)

COLOR CATHODE RAY TUBE AND PRODUCTION METHOD THEREFOR

Title (de)

FARBKATHODENSTRAHLRÖHRE UND HERSTELLUNGSVERFAHREN DERSELBEN

Title (fr)

TUBE CATHODIQUE COULEUR ET SON PROCEDE DE FABRICATION

Publication

EP 1052669 A1 (EN)

Application

EP 99972362 A

Priority

  • JP 9906315 W
  • JP 32346298 A

Abstract (en)

A heat absorbing film (14) made of an oxide is formed on a conductive reflecting film (13) by applying and baking a sol containing a material, which is to form the oxide, in a colloidal state. Conditions under which a vacuum evaporation system for forming the conductive reflecting film (13), and an applying/baking system for forming the heat absorbing film (14) are operated need not be changed, and the heat absorbing film (14) having small variations in thickness and quality can be formed on the conductive reflecting film (13). Reflection and radiation of heat from the conductive reflecting film (13) to a color selection electrode are suppressed effectively, so that a color cathode-ray tube in which a decrease in color purity is small can be manufactured. <IMAGE>

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

H01J 9/22

IPC 8 full level (invention and additional information)

H01J 29/28 (2006.01)

CPC (invention and additional information)

H01J 29/28 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 1052669 A1 20001115; EP 1052669 A4 20011017; CN 1288579 A 20010321; WO 0030140 A1 20000525

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB

2003-12-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030531

2003-07-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030528

2001-10-17 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010903

2001-10-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

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

2001-10-17 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 01J 9/22 A, 7H 01J 29/28 B

2000-11-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001002

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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