Patent · US Active

Device for backlighting a liquid-crystal display facility for a display and/or control unit, in particular in a household appliance

US7959340B2 · kind B2 · utility

2Cited by

8References

14Claims

0Family size

Assignee

BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

Georgios Kofidis · Koblenzer Straße, DE
Gerhard Mager · Bad Homburg vor der Höhe, DE
Bernhard Siegmar · Roding, DE

Key dates

Filing date	Jan 9, 2007
Grant date	Jun 14, 2011
Priority date	—
Expiry date	Sep 24, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0068
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The aim is to provide backlighting in a liquid-crystal display unit for a display and/or operator control unit, in particular on a domestic appliance. To achieve this, a backlighting layer, to which at least one backlighting source can be coupled, is located beneath an LCD layer and at least one supplementary backlighting layer is located beneath the backlighting layer. The supplementary layer can be coupled to at least one additional backlighting source assigned to the layers and permits the respective supplementary backlighting layer to emit light from the additional backlighting source(s) in respective defined masked zones through the backlighting layer and through the LCD layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.