Patent ID: 9250460
Filing Date: 2016-02-02
CPC Classification: G02F,G09G

Claim Text:
1. A liquid crystal display comprising a matrix of horizontal rows and vertical columns of pixels and, for each pixel, a liquid crystal cell, a pixel electrode controlled by a control transistor and at least two counter-electrodes situated on the same side of the liquid crystal as the pixel electrode, the liquid crystal being composed of molecules having a natural rest orientation in the plane of the display in the absence of a voltage between the pixel electrode and the counter-electrodes and another orientation in the plane of the display in the presence of a voltage between the pixel electrode and the counter-electrodes, this display further comprising an array of erase electrodes, and means for applying between two neighboring erase electrodes, during an erase phase, an erase electric field in a direction tending to return the molecules of the liquid crystal toward their rest orientation, wherein the counter-electrodes are parallel to the pixel electrode and common to all the pixels of a horizontal row, and each erase electrode runs along a vertical column of pixels and is common to the pixels of this vertical column.