US 6,982,684 B2 | ||
Brightness compensating low power display device and controller | ||
Moriyuki Tsuchihashi, Sagamihara (Japan) | ||
Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
Filed on Apr. 23, 2003, as Appl. No. 10/421,966. | ||
Claims priority of application No. 2002-121329 (JP), filed on Apr. 23, 2002. | ||
Prior Publication US 2003/0222865 A1, Dec. 04, 2003 | ||
Int. Cl. G09G 3/20 (2006.01) |
U.S. Cl. 345—55 | 11 Claims |
1. An apparatus comprising:
a display panel having a plurality of pixels arranged in a horizontal scanning direction and a vertical scanning direction;
a voltage controller, coupled to said display panel, which outputs a driving voltage to each of the plurality of pixels;
said voltage controller outputting to the plurality of pixels in said display panel a different polarity of the driving voltage
for every predefined line number in the vertical scanning direction; and
a brightness controller, operatively coupled to said display panel, which corrects a brightness for each of the plurality
of pixels dependent on the pixel's position in the vertical scanning direction in said display panel, based on a driving voltage;
said brightness controller correcting the brightness of each of the plurality of pixels depending on the position of the pixel
in the predefined line number.
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