← Back to Patent Explorer
DE3340468A1 Expired / Lapsed DE ⏱️ 0.0 years remaining

Liquid crystal display

Assignee: Robert Bosch GmbH
•
Filing: 1983-11-09
•
Granted: —
•
Expires: 2003-11-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A colour switchable liquid crystal display is proposed which manages without coloured light sources, light guides or focusing hoods. It is possible to produce arbitrary colours and mixed colours by using selective polarisers and suitable control parameters. The liquid crystal display has two liquid crystal cells which are separated from one another by coloured polarisers. A maximum of four different colours can be set depending on the switching state of the two liquid crystal cells. <IMAGE>

Inventors

  • 👤 Peter 7505 Ettlingen Knoll
  • 👤 Winfried Dipl.-Ing. 7507 Pfinztal König
  • 👤 Peter 7500 Karlsruhe Rapps

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-24 21:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1347; G02F1/13471; G02F1/13473; G02F1/1335; G02F1/133528; G02F1/133533; G02F1/137; G02F1/139; G02F1/1396

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag