Ovonic Imaging Systems, Inc.

Shui-Chih A Lien

Walter E Chapelle

Zvi Yaniv

Clive E Catchpole

Yair Baron

Mohshi Yang

An electronic matrix system and method for rapidly storing and efficiently retaining electric charge in selected ones of a plurality of storage elements are disclosed. Each storage element is addressable through a pair of parallel row select address lines and a column address line. A pair of threshold devices are coupled in nonopposing relation between the row select address lines and the storage element is coupled between the common node of the threshold devices and the column address line to which charging potential is applied. During the charging of the storage element, operating potentials which are substantially equal and opposite in polarity are applied to the row select line pair to forward bias both threshold devices and thereafter operating potentials which are also substantially equal and opposite in polarity are applied to the row select line pair to back bias both threshold devices to provide retention of the charge in the storage element.

Balanced drive electronic matrix system and method of operating the same

A light influencing display is provided which has a plurality of pixel group, each pixel of which includes a first electrode formed on a first surface and an opposing, second electrode formed on a second surface. A separate three terminal control device of deposited semiconductor material is formed on the first surface in association with each pixel. Each control device has a control terminal and two current path terminals, a first of which is connected to the first electrode of the control device's associated pixel. A voltage supply lead is formed on the first surface in association with each pixel group, and is connected to the second current path terminals associated with its pixel group. Similarly, a control lead is formed on the first surface in association with each pixel group, and is connected to the control terminals associated with its pixel group. A plurality of conductive data leads is formed on the second surface, with a data lead being electrically connected to each second electrode of a given pixel group. As a result, a desired voltage can be applied between the electrodes of a given pixel by using a selected control lead to turn on the control devices of that pixel's pixel group, and by using a selected data lead to supply a data voltage to its second electrode. The present invention allows x - y addressing of an active matrix display without crossing address lines on either the first or second surface, avoiding the risk of short circuits between such lines. It also allows the voltage supply and control leads associated with adjacent pixel groups to be combined, greatly reducing the number of lines required in such a display.

Growing community of inventors

Clawson, MI, United States of America

Shui-Chih A Lien