Liquid crystal display device

A liquid crystal display device comprising:

• a thin film transistor comprising:
• a gate electrode;
• a semiconductor layer;
• and
• a gate insulating layer separating the gate electrode and the semiconductor layer;
• a first insulating layer over the thin film transistor;
• a first conductive layer and a second conductive layer over the first insulating layer in direct contact with the semiconductor layer through openings in the first insulating layer;
• a second insulating layer over the first conductive layer and the second conductive layer;
• a common electrode over the second insulating layer;
• a third insulating layer over the common electrode;
• and
• a pixel electrode over the third insulating layer,
• wherein the pixel electrode is in electrical contact with one of first conductive layer and the second conductive layer through an opening in the third insulating layer and an opening in the second insulating layer;
• wherein the common electrode is in electrical contact with a third conductive layer made from a same film as the first conductive layer and the second conductive layer;
• wherein the third conductive layer is in electrical contact with a fourth conductive layer made of the same film as the gate electrode;
• and
• wherein the pixel electrode includes a first plurality of parallel and electrically conductive stripes making a first angle with a scan line and a second plurality of parallel and electrically conductive stripes making a second angle with the scan line.

A liquid crystal display device comprising:

• a thin film transistor comprising:
• a gate electrode;
• a semiconductor layer;
• and
• a gate insulating layer separating the gate electrode and the semiconductor layer;
• a first insulating layer over the thin film transistor;
• a first conductive layer and a second conductive layer over the first insulating layer in direct contact with the semiconductor layer through openings in the first insulating layer;
• a second insulating layer over the first conductive layer and the second conductive layer;
• a common electrode over the second insulating layer;
• a third insulating layer over the common electrode;
• and
• a pixel electrode over the third insulating layer,
• wherein the pixel electrode is in electrical contact with one of first conductive layer and the second conductive layer through an opening in the third insulating layer and an opening in the second insulating layer;
• wherein the common electrode is in electrical contact with a third conductive layer made from a same film as the first conductive layer and the second conductive layer;
• wherein the third conductive layer is in electrical contact with a fourth conductive layer made of the same film as the gate electrode;
• and
• wherein the pixel electrode is comb-shaped.

A liquid crystal display device comprising:

• a thin film transistor comprising:
• a gate electrode;
• a semiconductor layer;
• and
• a gate insulating layer separating the gate electrode and the semiconductor layer;
• a first insulating layer over the thin film transistor;
• a first conductive layer and a second conductive layer over the first insulating layer in direct contact with the semiconductor layer through openings in the first insulating layer;
• a second insulating layer over the first conductive layer and the second conductive layer;
• a common electrode over the second insulating layer;
• a third insulating layer over the common electrode;
• and
• a pixel electrode over the third insulating layer,
• wherein the pixel electrode is in electrical contact with one of first conductive layer and the second conductive layer through an opening in the third insulating layer and an opening in the second insulating layer;
• wherein the common electrode is in electrical contact with a third conductive layer made from a same film as the first conductive layer and the second conductive layer;
• wherein the third conductive layer is in electrical contact with a fourth conductive layer made of the same film as the gate electrode;
• and
• wherein the pixel electrode includes a plurality of openings each having a long and narrow shape.

A liquid crystal display device comprising:

• a thin film transistor comprising:
• a gate electrode;
• a semiconductor layer;
• and
• a gate insulating layer separating the gate electrode and the semiconductor layer;
• a first insulating layer over the thin film transistor;
• a first conductive layer and a second conductive layer over the first insulating layer in direct contact with the semiconductor layer through openings in the first insulating layer;
• a second insulating layer over the first conductive layer and the second conductive layer;
• a common electrode over the second insulating layer;
• a third insulating layer over the common electrode;
• and
• a pixel electrode over the third insulating layer,
• wherein the pixel electrode is in electrical contact with one of first conductive layer and the second conductive layer through an opening in the third insulating layer and an opening in the second insulating layer;
• wherein the common electrode is in electrical contact with a third conductive layer made from a same film as the first conductive layer and the second conductive layer;
• wherein the third conductive layer is in electrical contact with a fourth conductive layer made of the same film as the gate electrode;
• and
• wherein the pixel electrode includes a plurality of openings.