Global Patent Index - EP 0865066 B1

EP 0865066 B1 2002-12-18 - Method of manufacturing screen of color picture tube

Title (en)

Method of manufacturing screen of color picture tube

Title (de)

Verfahren zur Herstellung eines Phosphorschirm für Farbbildröhren

Title (fr)

Procédé de fabrication d'un écran fluorescent pour tube image couleur

Publication

EP 0865066 B1 (EN)

Application

EP 98104308 A

Priority

  • JP 5669297 A
  • JP 5204998 A

Abstract (en)

[origin: EP0865066A2] In manufacturing a phosphor screen of a color picture tube, a cured resist layer used in a photolithography process for a black matrix pattern may remain on a hole portion of the black matrix pattern formed on the inner surface of a glass panel without being removed completely in the washing process. In such a case, the pigment of a first optical filter layer remains adhered to the surface of the remained resist layer. This adhered pigment degrades substantially the brightness of luminescent colors of two other phosphors. Therefore, among the three color optical filter layers, the green optical filter layer, which has the minimum difference between a peak transmittance and a transmittance in other wavelength regions, is formed first. Accordingly, a level of an adverse effect of the remained green pigment on the emission of the blue and red phosphors can be suppressed to minimum.

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

H01J 9/227; H01J 29/18

IPC 8 full level (invention and additional information)

H01J 9/227 (2006.01); H01J 29/18 (2006.01); H01J 29/32 (2006.01)

CPC (invention and additional information)

H01J 29/327 (2013.01); H01J 9/2271 (2013.01); H01J 29/185 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 0865066 A2 19980916; EP 0865066 A3 19990414; EP 0865066 B1 20021218; DE 69810177 D1 20030130; DE 69810177 T2 20030605; JP H10312746 A 19981124; MY 121753 A 20060228

INPADOC legal status


2009-06-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2008-12-19 [REG FR ST] NOTIFICATION OF LAPSE

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2003-12-10 [26N] NO OPPOSITION FILED

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2003-08-01 [ET] FR: TRANSLATION FILED

2003-01-30 [REF] CORRESPONDS TO:

- Document: DE 69810177 20030130

2003-01-30 [REF] CORRESPONDS TO:

- Document: DE 69810177 P 20030130

2002-12-18 [AK] DESIGNATED CONTRACTING STATES:

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2002-12-18 [REG GB FG4D] EUROPEAN PATENT GRANTED

2002-04-17 [17Q] FIRST EXAMINATION REPORT

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1999-12-29 [AKX] PAYMENT OF DESIGNATION FEES

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1998-09-16 [17P] REQUEST FOR EXAMINATION FILED

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