Field sequential liquid crystal colour display
Abstract
The object of this invention is to provide a liquid crystal display that is able to realize a sequential color illumination method, i. e. that can advantageously achieve a high resolution full color display with no need of any color filters. For the purpose of attaining the object above, this invention provides a liquid crystal display characterized by being provided with a display panel in which a phase compensation plate is disposed in front of a bend oriented liquid crystal cell with a cell gap of 7 µm, said cell and phase compensation plate being inserted between two cross polarizers, a TFT active matrix driving each image element by dividing said display panel into elements in a matrix array, and a surface light source sequentially illuminating three color lights of red, green and blue on the rear face of the display panel.

Term
Term ended
Projected expiry passed 15 September 2017, 9 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both waysCites: the store holds 2 of 3
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0539185A1 | Cites | European Patent Office (EPO) | Y | Search report | 2 |
| EP0660297A2 | Cites | European Patent Office (EPO) | XY | Search report | 1,3 |
| PATENT ABSTRACTS OF JAPAN vol. 095, no. 006 31 July 1995 (1995-07-31) | Non-patent | – | – | Search report | – |
13 members in 7 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 11224697 | Japan | – | |
| 11224697 | Japan | A | |
| JP19970112246 | – | – | – |
Members13
| Document | Office | Kind | |
|---|---|---|---|
| CN1197933A | China | A | |
| EP0875880A2 | European Patent Office (EPO) | A2 | |
| EP0875880A3This record | European Patent Office (EPO) | A3 | |
| KR19980079366A | Republic of Korea | A | |
| JPH1114988A | Japan | A | |
| TW388001B | Taiwan Province of China | B | |
| US6108058A | United States of America | A | |
| KR100303369B1 | Republic of Korea | B1 | |
| CN1121628C | China | C | |
| EP0875880B1 | European Patent Office (EPO) | B1 | |
| DE69726836D1 | Germany | D1 | |
| JP3504480B2 | Japan | B2 | |
| DE69726836T2 | Germany | T2 |
30 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 | |
| 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 | |
| Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4 | NLV4 | EP | |
| 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 | |
| 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 | |
| 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 | |
| European patent grantedGrantedFG4D | FG4D | GB | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Designation fees paidDE FR GB NLAKX | AKX | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;RO;SIAX | AX | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;RO;SIAX | AX | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | 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
- 0875880
- Publication, DOCDB
- 0875880
- Publication, EPODOC
- EP0875880
- Application
- 97116026
- Application, DOCDB
- 97116026
- Application, EPODOC
- EP19970116026
Titles3
- German
- Flüssigkristall-Anzeigevorrichtung mit feldsequentieller Farbwiedergabe
- English
- Field sequential liquid crystal colour display
- French
- Ecran à cristaux liquides avec affichage de couleurs en trames séquentielles
Classification
- CPC, 7
- G09G3/3406
- G02F1/1395
- G02F2001/133622
- G09G3/2011
- G09G3/3648
- G09G2310/0235
- G09G2320/0247
- IPC, 5
- G02F1 13357
- G02F1 139
- G09G3 20
- G09G3 34
- G09G3 36
Designated states2
- Contracting states, 1
- Sweden
- Extension states, 1
- Slovenia