Electro-optical backlighting panel for use in computer-based...

Details Electro-optical backlighting panel for use in computer-based... Electro-optical backlighting panel for use in computer-based...

2005-07-12

2005-07-12

Parker, Kenneth (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal system

Liquid crystal writing tablet

C349S057000, C349S069000

Reexamination Certificate

active

06917391

ABSTRACT:
An electro-optical backlighting panel construction for use in portable computer-based systems having direct and projection viewing modes of operation. In the illustrative embodiments of the present invention, the electro-optical backlighting panel is integrated with a LCD display panel, a micropolarization panel, and a touch-screen writing panel to provide several different types of portable computer-based systems including, for example, a portable notebook computer, a computer-driven image display device, and a portable pen-computing device. In general, each of these computer-based systems are capable of selectively displaying color video images on an actively driven display surface, or projecting such video images onto a wall surface or projection screen. These computer-based systems can be easily reconfigured for projection viewing without any sort of physical modification to the LCD display panel assembly.

REFERENCES:
patent: 4138195 (1979-02-01), Saurer et al.
patent: 4323952 (1982-04-01), Proske

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