EP0469321A3
Back-light type liquid crystal display
Abstract
A liquid crystal display includes a fixing frame (11) having a display window, a liquid crystal panel device (12) received in the frame in facing relation to the window, and a back lighter (14) received in the frame and stacked to the panel device on the side thereof away from the window. The back lighter has a light guide having a marginal edge provided with a fluorescent lamp (14b) which is arranged outwardly of a corresponding marginal edge of the panel device and offset toward the panel device, so that the lamp does not project beyond the rear surface of the light guide.
Term
Term ended
Projected expiry passed 3 July 2011, 15.2 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both waysCites: the store holds 3 of 4
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0289197A2 | Cites | European Patent Office (EPO) | Y | Search report |
| FR2514536A1 | Cites | France | A | Search report |
| US4909604A | Cites | United States of America | X | Search report |
| TECHNICAL DEVELOPMENTS vol. 2, January 1982, SCHAUMBURG, ILL. USA pages 51 - 52; S.P.KOPISH & R.E.PETERSEN: 'An LCD Display Assembly' | Non-patent | – | – | Search report |
6 priority claims, no other members on record
Priority claims6
| Document | Office | Kind | Date |
|---|---|---|---|
| 8303890 | Japan | – | |
| 8303890 | Japan | U | |
| 8304090 | Japan | – | |
| 8304090 | Japan | U | |
| JP19900083038U | – | – | – |
| JP19900083040U | – | – | – |
28 legal events, as 3 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Fr: translation filedET | ET | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0469321
- Publication, DOCDB
- 0469321
- Publication, EPODOC
- EP0469321
- Application
- 111015
- Application, DOCDB
- 91111015
- Application, EPODOC
- EP19910111015
Titles3
- English
- BACK-LIGHT TYPE LIQUID CRYSTAL DISPLAY
- German
- Hinterbeleuchtete Flüssigkristallanzeigevorrichtung
- French
- Dispositif d'affichage à cristaux liquides à éclairage par l'arrière
Classification
- CPC, 3
- G02B6/0091
- G02F1/133615
- G09F2013/0463
- IPC, 3
- F21V8 00
- G02F1 13357
- G09F13 04
Designated states1
- Contracting states, 1
- Italy