Global patent index - EP 0978135 A4

EP 0978135 A4 2001-02-07 - PLASMA DISPLAY DEVICE

Title (en)

PLASMA DISPLAY DEVICE

Title (de)

PLASMA ANZEIGEVORRICHTUNG

Title (fr)

ECRAN A PLASMA

Publication

EP 0978135 A4 (EN)

Application

EP 98918705 A

Priority

  • US 9808298 W
  • US 4431097 P
  • US 116797 A

Abstract (en)

[origin: WO9849706A1] A plasma display having a transparent front panel (622) spaced from a back panel (610) which is a metal core (612) having layers of a dielectric material (614) extending over and bonded to the core. Conductive electrodes (620) are on the surface of or embedded in the dielectric layer of the back panel. The materials of which the back panel is made are chosen to form a back panel having a thermal coefficient of expansion (TCE) compatible with that of the front panel. The dielectric material is made from a green ceramic tape which is bonded to the core and cofired with the core to form the back panel. Barrier ribs (616) are formed on the back panel by embossing or scribing the green tape before cofiring the bonded assembly. Slight differences in the TCEs of the front and back panels may be compensated for by heating the panel having the lower TCE to a temperature hotter than the panel having the higher TCE during the frit seal process. Alternatively, the materials for the dieletric (614) may be chosen such that the composite TCE of the cofired assembly (610) matches the TCE of the front panel.

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

H01J 9/00

IPC 8 full level (invention and additional information)

H01J 9/14 (2006.01); H01J 9/20 (2006.01); H01J 9/24 (2006.01); H01J 11/02 (2006.01); H01J 17/16 (2006.01)

CPC (invention and additional information)

H01J 9/20 (2013.01); H01J 9/241 (2013.01); H01J 9/242 (2013.01); H01J 11/34 (2013.01); H01J 11/48 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

WO 9849706 A1 19981105; AU 7158098 A 19981124; CN 1147898 C 20040428; CN 1252888 A 20000510; EP 0978135 A1 20000209; EP 0978135 A4 20010207; JP 2001526822 A 20011218

INPADOC legal status

2008-04-30 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20071101

2004-04-28 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20040311

2001-02-07 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20001227

2001-02-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB NL

2000-02-09 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991011

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB NL