The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1987
Filed:
Feb. 19, 1985
Zvi Yaniv, Southfield, MI (US);
Walter E Chapelle, Southfield, MI (US);
Shui-Chih A Lien, Clawson, MI (US);
Mohshi Yang, Troy, MI (US);
Ovonic Imaging Systems, Inc., Troy, MI (US);
Abstract
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.