Display device

Details Display device Display device

2007-03-07

2011-11-15

Awad, Amr (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

Reexamination Certificate

active

08059081

ABSTRACT:
In the display device which is used in a miniaturized portable equipment, when a drive circuit is also connected on the same substrate as pixels, an input signal of low voltage has a level thereof shifted even when the threshold value is large or fluctuated. The display device includes pixel electrodes, switching elements which supply video signals to the pixel electrodes, and a drive circuit which supplies the video signals to the switching elements on the same substrate, wherein the drive circuit includes a level shift circuit, the level shift circuit includes a transistor. In a state that the transistor assumes an ON state, when an input signal is inputted to a source terminal and the input signal is at a low voltage level, a drain terminal assumes a low voltage level. Further, even when the input signal is at a high voltage level equal to or lower than a threshold value, the drain terminal outputs a voltage equal to or more than the threshold value as a high level voltage.

REFERENCES:
patent: 6266040 (2001-07-01), Nagatomo
patent: 7057596 (2006-06-01), Miyazawa
patent: 2002/0135554 (2002-09-01), Yamazaki et al.
patent: 2003/0076149 (2003-04-01), Haga
patent: 2003/0214477 (2003-11-01), Murakami et al.
patent: 2003-302946 (2003-10-01), None

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