Active matrix subtrate, liquid crystal display panel and method of manufacturing the same
View Patent ↗Disclosed is an active matrix substrate including a substrate, a gate wiring formed on the substrate, a data wiring formed on the substrate so as to cross the gate wiring, a common wiring formed on the substrate extending approximately parallel to the gate wiring, a pixel formed in a region surrounded by the gate wiring and the data wiring, and a switching element formed in a vicinity of an intersection of the gate wiring and the data wiring. The pixel includes a pixel electrode, and a counter electrode arranged alternately with the pixel electrode and connected to the data wiring. The switching element includes a first electrode connected to the common wiring, and a second electrode connected to the pixel electrode.
1. An active matrix substrate, comprising:
a substrate;
a gate wiring formed on the substrate;
a data wiring formed on the substrate so as to cross the gate wiring;
a common wiring formed on the substrate extending approximately parallel to the gate wiring;
a pixel formed in a region surrounded by the gate wiring and the data wiring, including:
a pixel electrode; and
a counter electrode arranged alternately with the pixel electrode and connected to the data wiring; and
a switching element formed in a vicinity of an intersection of the gate wiring and the data wiring, including:
a first electrode connected to the common wiring; and
a second electrode connected to the pixel electrode.
2. The active matrix substrate according to claim 1 , wherein the pixel electrode is formed in a same layer as the gate wiring and the common wiring, and
the counter electrode is formed in a same layer as the data wiring.
3. The active matrix substrate according to claim 1 , wherein the pixel electrode is formed in a first layer upper than the gate wiring, the common wiring and the data wiring, and is connected to the second electrode via a first contact hole, and
the counter electrode is formed in a second layer upper than the gate wiring, the common wiring and the data wiring, and is connected to the data wiring via a second contact hole.
4. The active matrix substrate according to claim 3 , further comprising:
a second counter electrode formed in a third layer upper than the data wiring, and in a second region overlapping with the data wiring in a normal direction to the substrate.
5. The active matrix substrate according to claim 1 , wherein the pixel electrode is formed in a layer upper than the gate wiring, the common wiring and the data wiring, and is connected to the second electrode via a contact hole, and
the counter electrode is formed in a same layer as the data wiring.
6. The active matrix substrate according to claim 1 , wherein the common wiring is formed in a layer upper than the gate wiring,
the pixel electrode is formed in a same layer as the common wiring, and
the counter electrode is formed in a same layer as the data wiring.
7. The active matrix substrate according to claim 1 , wherein the common wiring is formed in a first layer upper than the gate wiring;
the pixel electrode is formed in a second layer upper than the gate wiring, the common wiring and the data wiring, and is connected to the second electrode via a first contact hole, and
the counter electrode is formed in a third layer upper than the gate wiring, the common wiring and the data wiring, and is connected to the data wiring via a second contact hole.
8. The active matrix substrate according to claim 7 , wherein the common wirings neighboring each other are connected along the data wiring.
9. The active matrix substrate according to claim 1 , wherein the common wiring is formed in a first layer upper than the gate wiring,
the pixel electrode is formed in a same layer as the common wiring, and
the counter electrode is formed in a second layer upper than the gate wiring, the common wiring and the data wiring, and is connected to the data wiring via a contact hole.
10. A liquid crystal display panel of an in plane switching type, comprising:
an active matrix substrate, including:
a substrate;
a gate wiring formed on the substrate;
a data wiring formed approximately orthogonal to the gate wiring;
a common wiring formed approximately parallel to the gate wiring;
the pixel formed in a region surrounded by the gate wiring and the data wiring, including:
a pixel electrode; and
a counter electrode arranged alternately with the pixel electrode and connected to the data wiring; and
a switching element formed in a vicinity of an intersection of the gate wiring and the data wiring, including:
a first electrode connected to the common wiring; and
a second electrode connected to the pixel electrode;
an opposed substrate opposing to the active matrix substrate; and
a liquid crystal sandwiched between the active matrix substrate and the opposed substrate.
11. A method of manufacturing the active matrix substrate, comprising:
forming a gate wiring including a gate electrode, a common wiring approximately parallel to the gate wiring, and a pixel electrode approximately orthogonal to the common wiring on a substrate; and
forming a data wiring approximately parallel to the pixel electrode and passing a vicinity of the gate electrode, a counter electrode connected to the data wiring and arranged alternately with the pixel electrode, and a switching element having a first electrode connected to the common wiring and a second electrode connected to the pixel electrode.