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

An electrode plate, comprising:

• a light-transmissive substrate;
• a plurality of metal electrodes disposed on the light-transmissive substrate with spacings therebetween;
• an insulating layer disposed at the spacings;
• and a color filter layer, wherein
• each of the metal electrodes includes a first layer comprising a metal or alloy selected from the group consisting of titanium, chromium, molybdenum, tungsten, aluminum, tantalum and nickel;
• a second layer comprising copper or silver disposed 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 and zinc and disposed on the second layer, wherein
• the metal electrodes and the insulating layer are disposed on the color filter layer, the third layer is an anti-oxidation layer, and the anti-oxidation layer and the insulating layer as a whole form a substantially flat surface.

An electrode plate, comprising:

• a light-transmissive substrate;
• a plurality of metal electrodes disposed on the light-transmissive substrate and with spacings therebetween;
• an insulating layer disposed at the spacings;
• and a color filter layer, wherein
• each of the metal electrodes includes a first layer comprising copper or silver;
• and a second layer comprising a metal or alloy selected from the group consisting of molybdenum, tantalum, tungsten, titanium, chromium, nickel and zinc and disposed on the first layer, wherein
• the second layer is an anti-oxidation layer, and the anti-oxidation layer and the insulating layer as a whole form a substantially flat surface and the metal electrodes and the insulating layer are disposed on the color filter layer.

An electrode plate, comprising:

• a light-transmissive substrate a plurality of metal electrodes disposed on the light-transmissive substrate with spacings therebetween;
• an insulating layer disposed at the spacings;
• and a plurality of transparent electrodes disposed on the metal electrodes and the insulating layer, wherein
• each of the metal electrodes includes a first layer comprising copper or silver;
• and a second layer comprising a metal or alloy selected from the group consisting of molybdenum, tantalum, tungsten, titanium, chromium, nickel and zinc and disposed on the first layer,
• the second layer is an anti-oxidation layer, and
• the anti-oxidation layer and the insulating layer as a whole form a substantially flat surface.

A liquid crystal device, comprising:

• a pair of electrode plates;
• and a liquid crystal disposed between the electrode plates,
• at least one of said pair of electrode plates comprising a light-transmissive substrate;
• a plurality of metal electrodes disposed on the light-transmissive substrate with spacing therebetween;
• and an insulating layer disposed at the spacings, wherein
• each of the metal electrodes includes a first layer comprising a metal or alloy selected from the group consisting of titanium, chromium, molybdenum, tungsten, aluminum, tantalum and nickel;
• a second layer comprising copper or silver disposed on the first layer;
• and an anti-oxidation layer disposed on the second layer, wherein
• the anti-oxidation layer and the insulating layer as a whole form a substantially flat surface.

A liquid crystal device, comprising:

• a pair of electrode plates;
• and a liquid crystal disposed between the electrode plates,
• at least one of said pair of electrode plates comprising at least a light-transmissive substrate;
• a plurality of metal electrodes disposed on the light-transmissive substrate with spacings therebetween;
• and an insulating layer disposed at the spacings, wherein
• each of the metal electrodes includes a first layer comprising a metal or alloy selected from the group consisting of titanium, chromium, molybdenum, tungsten, aluminum, tantalum and nickel;
• a second layer comprising a copper or silver disposed on the first layer;
• and a third anti-oxidation layer comprising a metal or alloy selected from the group consisting of molybdenum, tantalum, tungsten, titanium, chromium, nickel and, said third layer being disposed on the second layer, and wherein
• the anti-oxidation layer and the insulating layer as a whole form a substantially flat surface.

A liquid crystal device, comprising:

• a pair of electrode plates and a liquid crystal disposed between the electrode plates, at least one of said pair of electrode plates comprising a light-transmissive substrate;
• a plurality of metal electrodes disposed on the light-transmissive substrate with spacings therebetween;
• and an insulating layer disposed at the spacings, wherein
• each of the metal electrodes includes a first layer comprising copper or silver;
• and
• a second anti-oxidation layer comprising a metal or alloy selected from the group consisting of molybdenum, tantalum, tungsten, titanium, chromium, nickel and zinc and disposed on the first layer, and wherein
• the anti-oxidation layer and the insulating layer as a whole form a substantially flat surface.

A process for producing an electrode plate comprising a light-transmissive substrate;

• a plurality of metal electrodes each including a first layer and a second layer, said metal electrodes being disposed on the light-transmissive substrate with spacings therebetween;
• and an insulating layer disposed at the spacings;
• said process comprising the steps of:
• forming on the light-transmissive substrate said first layer comprising a metal or alloy selected from the group consisting of titanium, chromium, molybdenum, tungsten, aluminum, tantalum and nickel;
• forming a second layer comprising copper or silver disposed on the first layer;
• forming an anti-oxidation layer on the second layer;
• and
• forming an insulating layer so that the insulating layer and the anti-oxidation layer as a whole form a substantially flat surface.

A process for producing an electrode plate, comprising a light-transmissive substrate;

• a plurality of metal electrodes each including a first layer and a second layer, said metal electrodes being disposed on the light-transmissive substrate with spacings therebetween;
• and an insulating layer disposed at the spacings;
• said process for comprising the steps of:
• forming on the light-transmissive substrate a first layer comprising copper or silver;
• forming on the first layer a second anti-oxidation layer, comprising a metal or alloy selected from the group consisting of molybdenum, tantalum, tungsten, titanium, chromium, nickel, aluminum and zinc;
• and
• forming an insulating layer so that the insulating layer and the anti-oxidation layer as a whole form a substantially flat surface.