Active matrix display device

Details Active matrix display device Active matrix display device

1994-06-29

1997-04-29

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345197, G09G 500

Patent

active

056253761

ABSTRACT:
An active matrix display device is disclosed which realizes changing over between a wide display and a normal display with a simple construction. The active matrix display device includes picture elements disposed in rows and columns on a horizontally elongated screen. A gate line is connected to each picture element row, while a data line is connected to each picture element column. A signal line for supplying a video signal and data lines are connected by way of sampling switches. A horizontal shift register controls sequential opening and closing operations of the sampling switches. The picture element columns of the horizontally elongated screen are divided into a predetermined area allocated to a normal display and a pair of expansion areas included in a wide display. The horizontal shift register is divided into a predetermined stage section corresponding to the predetermined area and expansion stage sections corresponding to the expansion areas. For a wide display, the predetermined and expansion stage sections of the horizontal shift register are interconnected serially into an integrated condition, but upon normal display, the expansion stage sections are disconnected from the predetermined stage section.

REFERENCES:
patent: 4998100 (1991-03-01), Ishii
patent: 5442372 (1995-08-01), Shiki
Patent Abstracts of Japan, No. JP 02-143 781, vol. 14, No. 391, Jun. 1, 1990 entitled "Matrix Display Panel Driving DEvice.".

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