Electronic shelf label

Details Electronic shelf label Electronic shelf label

2005-07-05

2005-07-05

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Interconnection of plural cells in series

C106S169010, C106S001150, C106S001150, C106S172100

Reexamination Certificate

active

06914648

ABSTRACT:
There are provided at least two liquid crystal panels10, 20including the liquid crystals developing a memory effect, the liquid crystal developing a memory effect on a side opposite to a viewer side has a selective reflection wavelength set at 615-665 nm, the liquid crystal developing a memory effect on the viewer side has a selective reflection wavelength set at 490-540 nm, and a color filter having a certain transmission property is provided between the liquid crystal developing a memory effect on the viewer side and the liquid crystal developing a memory effect on the side opposite to the viewer side.

REFERENCES:
patent: 6806924 (2004-10-01), Niiyama et al.

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