Display device comprising substrates, contrast medium and barrier layers between contrast medium and each of substrates

A display device comprising:

• a first substrate comprising a plastic;
• a first barrier layer comprising an inorganic insulating material over the first substrate;
• a pixel unit over the first barrier layer comprising:
• a thin film transistor comprising:
• an active layer comprising a semiconductor comprising an organic material for forming a channel portion;
• a gate electrode;
• a insulating layer having an opening portion over the first barrier layer;
• and
• an electrode over the insulating layer and electrically connected to the thin film transistor;
• a microcapsule containing electrically charged particles over the electrode;
• a second barrier layer comprising an inorganic insulating material over the contrast media;
• a second substrate comprising a plastic over the second barrier layer,
• wherein the opening portion is overlapped with the gate electrode;
• wherein the active layer is formed in the opening portion;
• and
• wherein the microcapsule containing the electrically charged particles changes the reflectivity thereof upon an application of an electric field.

A display device comprising:

• a first substrate comprising a plastic;
• a first barrier layer comprising an inorganic insulating material over the first substrate;
• a pixel unit over the first barrier layer comprising:
• a thin film transistor comprising:
• an active layer comprising a semiconductor comprising an organic material for forming a channel portion;
• a gate electrode;
• a first insulating layer having an opening portion over the first barrier layer;
• and
• an electrode over the first insulating layer and electrically connected to the thin film transistor;
• a second insulating layer over the first insulating layer, the second insulating layer covering a periphery of the electrode;
• a contrast medium over the electrode and surrounded by the second insulating layer;
• a second barrier layer comprising an inorganic insulating material over the contrast media;
• and
• a second substrate comprising a plastic over the second barrier layer,
• wherein the opening portion is overlapped with the gate electrode,
• wherein the active layer is formed in the opening portion;
• and
• wherein the contrast medium changes the reflectivity thereof upon an application of an electric field.

A display device comprising:

• a first substrate comprising a plastic,
• a first barrier layer comprising an inorganic insulating material over the first substrate;
• a pixel unit over the first barrier layer comprising:
• a thin film transistor comprising:
• an active layer comprising a semiconductor comprising an organic material for forming a channel portion;
• a gate electrode;
• a first insulating layer having an opening portion over the first barrier layer;
• and
• an electrode over the insulating layer and electrically connected to the thin film transistor;
• a second insulating layer over the first insulating layer, the second insulating layer covering a periphery of the electrode;
• a microcapsule containing electrically charged particles over the electrode and surrounded by the second insulating layer;
• a second barrier layer comprising an inorganic insulating material over the contrast media;
• and
• a second substrate comprising a plastic over the second barrier layer,
• wherein the opening portion is overlapped with the gate electrode,
• wherein the active layer is formed in the opening portion;
• and
• wherein the microcapsule containing the electrically charged particles changes the reflectivity thereof upon an application of an electric field.

A display device comprising:

• a first substrate;
• a first barrier layer comprising an inorganic insulating material over the first substrate;
• a pixel unit over the first barrier layer comprising:
• a thin film transistor comprising:
• an active layer comprising a semiconductor comprising an organic material for forming a channel portion;
• a gate electrode;
• an insulating layer having an opening portion over the first barrier layer;
• and
• an electrode over the insulating layer and electrically connected to the thin film transistor;
• a contrast medium over the electrode;
• a second barrier layer comprising an inorganic insulating material over the contrast media;
• a second substrate over the second barrier layer,
• wherein the opening portion is overlapped with the gate electrode;
• wherein the active layer is formed in the opening portion;
• and
• wherein the contrast medium changes the reflectivity thereof upon an application of an electric field.