Nonlinear element, element substrate including the nonlinear element, and display device

A nonlinear element comprising:

• a first electrode;
• a first layer including a first composite material containing an organic compound and an inorganic compound, formed over the first electrode;
• a second layer including a second composite material containing an organic compound and an inorganic compound, formed over the first layer;
• and
• a second electrode formed over the second layer,
• wherein a concentration ratio between the organic compound and the inorganic compound of the second layer is different from a concentration ratio between the organic compound and the inorganic compound of the first layer.

A display device comprising:

• an insulating substrate;
• a nonlinear element formed over the insulating substrate;
• a counter substrate formed over the nonlinear element so as to face the insulating substrate;
• and
• a liquid crystal interposed between the insulating substrate and the counter substrate,
• wherein the nonlinear element comprises:
• a first electrode formed over the insulating substrate,
• a first layer including a first composite material containing an organic compound and an inorganic compound, formed over the first electrode,
• a second layer including a second composite material containing an organic compound and an inorganic compound, formed over the first layer, and
• a second electrode formed over the second layer,
• wherein a concentration ratio between the organic compound and the inorganic compound of the second layer is different from a concentration ratio between the organic compound and the inorganic compound of the first layer.

A display device comprising:

• an insulating substrate;
• a nonlinear element formed over the insulating substrate;
• a counter substrate provided over the nonlinear element so as to face the insulating substrate;
• and
• a liquid crystal interposed between the insulating substrate and the counter substrate,
• wherein the nonlinear element comprises:
• a first electrode formed over the insulating substrate;
• a first layer including a first composite material containing an organic compound and an inorganic compound, formed over the first electrode;
• a second layer including a second composite material containing an organic compound and an inorganic compound, formed over the first layer,
• a second electrode formed over the second layer,
• wherein a concentration ratio between the organic compound and the inorganic compound of the second layer is different from a concentration ratio between the organic compound and the inorganic compound of the first layer.