Liquid crystal display and fabrication method thereof
View Patent ↗A liquid crystal display employs an on-common storage capacitor which includes a lower storage electrode of a predetermined size provided in the same layer that a signal line is formed, and a pixel electrode provided on the lower storage electrode, and functioning as an upper storage electrode. A method of fabricating the liquid crystal display is also provided.
1. A liquid crystal display comprising:
a substrate;
a data line on the substrate;
a lower storage electrode of a storage capacitor of a pixel, the lower storage electrode being spaced apart from the data line and having a first portion extending parallel to the data line and a second portion extending perpendicular to the data line, said first portion and said second portion being a single piece structure of uniform thickness, said first portion being formed of the same material as said second portion;
a lower insulating layer on the substrate, the lower storage electrode and the data line being directly on an upper surface of the lower insulating layer; and
a pixel electrode provided over the lower storage electrode, and functioning as an upper storage electrode of the storage capacitor of the pixel.
2. The liquid crystal display of claim 1 , wherein the lower storage electrode is formed of the same material as the data line.
3. The liquid crystal display of claim 1 , wherein the first portion of the lower storage electrode is formed to cross the pixel electrode at a right angle.
4. The liquid crystal display of claim 1 , wherein a longest portion of the lower storage electrode is in parallel with the data line.
5. The liquid crystal display of claim 1 , wherein the lower storage electrode forms the storage capacitor with the pixel electrode in a vertical direction.
6. The liquid crystal display of claim 1 , wherein the second portion comprises a predetermined size of a wing in parallel with a scanning line that is provided to cross the data line at a right angle.
7. The liquid crystal display of claim 1 , wherein the lower insulating Layer is located between the lower storage electrode and the substrate.
8. The liquid crystal display of claim 7 , further comprising at least one scanning line on the substrate, the lower insulating layer covering a top surface of the at least one scanning line.
9. A liquid crystal display comprising:
a substrate;
a plurality of scanning lines formed on the substrate;
a plurality of data lines formed on the substrate to cross the plurality of scanning lines at a right angle;
a thin film transistor formed on the cross portion of one of said scanning lines and one of said data lines;
an on-common lower storage electrode of an on-common storage capacitor of a pixel, the lower storage electrode being spaced apart from the data line and being provided to cross the scanning lines at a right angle and be in parallel with the data lines, said lower storage electrode having a first portion extending parallel to the data lines and a second portion extending perpendicular to the data lines, said first portion and said second portion being a single piece structure of uniform thickness, said first portion being formed of the same material as said second portion;
a lower insulating layer on the substrate, the lower storage electrode and the data lines being directly on an upper surface of the lower insulating layer; and
a pixel electrode provided at a matrix region defined by the crossing of the scanning lines and the data lines, and functioning as an on-common upper storage electrode of the on-common storage capacitor of the pixel.
10. The liquid crystal display of claim 9 , wherein the lower storage electrode is formed of the same material as the data line.
11. The liquid crystal display of claim 9 , wherein the first portion of the lower storage electrode is formed to cross the pixel electrode at a right angle.
12. The liquid crystal display of claim 9 , wherein a longest portion of the lower storage electrode is in parallel with one of said data lines.
13. The liquid crystal display of claim 9 , wherein the lower storage electrode forms the on-common storage capacitor with the pixel electrode in a vertical direction.
14. The liquid crystal display of claim 9 , wherein the second portion comprises a predetermined size of a wing in parallel with one of said scanning lines, which is provided to cross one of said data lines at a right angle.
15. The liquid crystal display of claim 9 , wherein the insulating layer is located between the lower storage electrode and the substrate.
16. The liquid crystal display of claim 15 , wherein the lower insulating layer covers a top surface of the plurality of scanning lines.
17. A liquid crystal display comprising:
a substrate;
a data line on the substrate;
a lower storage electrode of a storage capacitor of a pixel, the lower storage electrode being spaced apart from the data line and having a first portion extending parallel to the data line and a second portion extending perpendicular to the data line, said first portion and said second portion being a single piece structure of uniform thickness, said first portion being formed of the same material as said second portion, the lower storage electrode being above a lower insulating layer;
the lower insulating layer on the substrate, the lower storage electrode and the data line being directly on an upper surface of the lower insulating layer; and
a pixel electrode provided over the lower storage electrode, and functioning as an upper storage electrode of the storage capacitor of the pixel.
18. The liquid crystal display of claim 17 , wherein the insulating layer is located between the lower storage electrode and the substrate.
19. The liquid crystal display of claim 18 , further comprising at least one scanning line on the substrate, the lower insulating layer covering a top surface of the at least one scanning line.