Liquid crystal display device with improved switching means

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United States of America Patent

PATENT NO 8405591
APP PUB NO 20100007652A1
SERIAL NO

12527416

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Abstract

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The invention relates to a method for controlling a liquid crystal display, comprising a matrix of pixels arranged in crossed lines and columns and in which a switch in the state of the liquid crystal molecules, controlled by application of an electric control signal between two electrodes (50, 52) enclosing each pixel, which brings about a flow in a given direction (18), the pixel addressing being carried out by a line by line addressing either in a single step or in two steps, the first step comprising a collective addressing of at least a part of the screen in a given single texture, followed by a second step of line by line addressing, characterized in comprising, for controlling the switching of at least some of the pixels (P), a step for application to at least one adjacent pixel (58) of auxiliary electric signals wherein, depending on the direction of flow of the pixel (P) the switching of which is to be controlled, the rising or falling fronts of the auxiliary signals are temporally advanced in relation to or simultaneous with the active falling front of the electric control signal with a time offset of between 0 and several tens of microseconds at ambient temperature, such as to promote the switching of said pixel (P) for control, said auxiliary electric signals being applied in the second step when the addressing is in two steps. The invention further relates to a display.

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Patent Owner(s)

Patent OwnerAddress
FRANCE BREVETS47 RUE DE LA VICTOIRE PARIS 75009

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Joly, Stéphane Saint Saturnin, FR 4 1
Laffitte, Jean Denis Leuville sur Orge, FR 2 1
Martinot-Lagarde, Philippe Marcoussis, FR 15 111

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