JPS643630A - Electro-optic device - Google Patents

Abstract

PURPOSE:To prevent the breakdown of nonlinear elements by static electricity by providing row electrodes which are not connected with picture element electrodes to the outside of row electrode groups connected to the picture element electrodes via the nonlinear elements. CONSTITUTION:The electrodes (dummy electrode 5) which are not connected with the picture element electrodes on the outside of the electrode groups connected with the nonlinear elements are provided. The nonlinear elements are sandwiched in the crossed parts of the row electrodes and the picture element electrodes 2. The dummy electrodes 5 are formed simultaneously of the material similar to the material of the row electrodes 1. Only the dummy electrodes 5 are impressed with such a high voltage as to break down the nonlinear elements and the nonlinear elements connected to the row electrodes 1 on the inside thereof can be protected if the dummy electrodes 5 are provided on the outside of the line electrode groups. The electrostatic breakdown of the nonlinear elements is thus easily prevented simply by partly changing a mask for patterning, by which the production of the active matrix electro-optic device at a high yield is enabled.