Patent · US Expired

Electronic device

US6667781B2 · kind B2 · utility

2Cited by

5References

6Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Martin Ek · Dalby, SE
Goran Schack · Täby, SE

Key dates

Filing date	Oct 16, 2001
Grant date	Dec 23, 2003
Priority date	—
Expiry date	May 28, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/133626
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An electronic device provided with a front lit LCD (13) having a theoretical viewing area (TVA). The electronic device comprises a transparent front light guiding plate (14) extending between the LCD (13) and a front (11) of said electronic device and the front (11) has an opening (12) through which the LCD (13) can be viewed through the transparent front light guiding plate (14). A masking (20) is provided between the LCD (13) and the front light guiding plate (14), said masking (20) having an opening (21) that substantially corresponds to the theoretical viewing area (TVA) of the LCD (13), and extending outwards from said opening (21). The opening (12) in the front (11) of the electronic device is larger than the opening (21) in the masking (20).

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