Double sided liquid crystal display unit and portable...

Details Double sided liquid crystal display unit and portable... Double sided liquid crystal display unit and portable...

2010-07-01

2010-11-09

Robinson, Mark A (Department: 2883)

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

C349S074000

Reexamination Certificate

active

07830475

ABSTRACT:
A liquid crystal display device including two liquid crystal display panels located back to back is made thinner. A liquid crystal display device includes first and second liquid crystal display panels located back to back. The liquid crystal display device further includes a light source provided to a side of a rear substrate of the first liquid crystal display panel, a light source provided to a side of a rear substrate of the second liquid crystal display panel, and a polarizing element provided between the first and second liquid crystal display panels. The rear substrate of the first liquid crystal display panel includes a light guide layer for directing light, incident on the rear substrate from the light source and propagating inside the rear substrate, toward the second liquid crystal display panel. The rear substrate of the second liquid crystal display panel includes a light guide layer for directing light, incident on the rear substrate from the light source and propagating inside the rear substrate, toward the first liquid crystal display panel.

REFERENCES:
patent: 6028649 (2000-02-01), Faris et al.
patent: 7210838 (2007-05-01), Sakurai
patent: 2004151560 (2004-05-01), None
Misono et al.; “Double Sided Liquid Crystal Display Unit and Portable Electronic Apparatus Comprising a Polarizing Element Between Two Liquid Crystal Display Panels”; U.S. Appl. No. 12/089,089; filed Apr. 3, 2008.

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