Electrode plate with two-layer metal electrodes including copper or silver layer, and flattened anti-oxidation and insulating layers

摘要

An electrode plate, suitable for constituting a liquid crystal device, includes at least a light-transmissive substrate, a plurality of metal electrodes disposed on the light-transmissive substrate and with spacings therebetween, and an insulating layer disposed at the spacings. Each of the metal electrodes includes a first layer, disposed on the light-transmissive substrate comprising a metal or alloy selected from the group consisting of titanium, chronium, molybdenum, tungsten, aluminum, tantalum and nickel, a second layer comprising copper or silver dispersed on the first layer; and a third layer comprising a metal or alloy selected from the group consisting of molybdenum, tantalum, tungsten, titanium, chromium, nickel, aluminum and zinc and disposed on the second layer. The electrode plate is effective in providing a liquid crystal device with good display qualities, a durability and a productivity through improvements in an adhesiveness to the light-transmissive substrate and an antioxidizing property of the metal electrodes.