Liquid crystal display device having capacitor formed with shorting bar
View Patent ↗There is disclosed a liquid crystal display that is adaptive for improving picture quality by eliminating residual DC components within a horizontal electric field type liquid crystal display panel. A liquid crystal display device according to an embodiment of the present invention includes a substrate defined as a display part and a non-display part; a gate line formed on the substrate; a common line substantially parallel to the gate line; a data line crossing the gate line and the common line while being insulated, to define a pixel area; and at least one capacitor located in the non-display part and connected to at least one of the gate line, the common line and the data line for storing a remaining component of the display part and eliminating the stored component.
1. A liquid crystal display device, comprising:
a substrate of an in-plane switching liquid crystal display device having a display part and a non-display part;
a gate line on the substrate;
a common line substantially parallel to the gate line;
a data line crossing the gate line and the common line while being insulated therefrom, to define a pixel area;
at least one capacitor in the non-display part and connected to at least one of the gate line, the common line and the data line for storing a remaining electric charge component in the display part and eliminating the stored electric charge component;
a common electrode in the display part of the substrate and connected to the common line;
a thin film transistor at a crossing area of the gate line and the data line;
a gate insulating film between the gate line and the data line;
a protective film on the gate insulating film for protecting the thin film transistor; and
a pixel electrode connected to the thin film transistor to form a horizontal electric field with the common electrode,
wherein the component is a remaining electric charge component in the display part not induced from the outside, and
wherein the capacitor includes:
a first capacitor connected to at least one of the gate line and the common line; and
a second capacitor connected to the data line,
a first static electricity prevention means in the non-display part of the substrate and connected to the first capacitor; and
a second static electricity prevention means in the non-display part of the substrate and connected to the second capacitor;
wherein the first capacitor includes:
a first shorting bar connected to the first static electricity prevention means;
at least one layer of insulating film on the first shorting bar; and
a first dummy line to overlap the first shorting bar on the at least one layer of insulating film.
2. The liquid crystal display device according to claim 1 , wherein the first shorting bar includes the same metal as any one of the gate line and the data line.
3. The liquid crystal display device according to claim 1 , wherein the first dummy line includes the same metal as the pixel electrode.
4. The liquid crystal display device according to claim 1 , wherein the at least one layer of insulating film is the gate insulating film and the protective film.
5. The liquid crystal display device according to claim 1 , wherein the at least one layer of insulating film is the protective film.
6. A liquid crystal display device, comprising:
a substrate of an in-plane switching liquid crystal display device having a display part and a non-display part;
a gate line on the substrate;
a common line substantially parallel to the gate line;
a data line crossing the gate line and the common line while being insulated therefrom, to define a pixel area;
at least one capacitor in the non-display part and connected to at least one of the gate line, the common line and the data line for storing a remaining electric charge component in the display part and eliminating the stored electric charge component;
a common electrode in the display part of the substrate and connected to the common line;
a thin film transistor at a crossing area of the gate line and the data line;
a gate insulating film between the gate line and the data line;
a protective film on the gate insulating film for protecting the thin film transistor; and
a pixel electrode connected to the thin film transistor to form a horizontal electric field with the common electrode,
wherein the component is a remaining electric charge component in the display part not induced from the outside, and
wherein the capacitor includes:
a first capacitor connected to at least one of the gate line and the common line; and
a second capacitor connected to the data line,
a first static electricity prevention means in the non-display part of the substrate and connected to the first capacitor; and
a second static electricity prevention means in the non-display part of the substrate and connected to the second capacitor;
wherein the second capacitor includes:
a second shorting bar connected to the second static electricity prevention means;
at least one layer of insulating film on the second shorting bar; and
a second dummy line to overlap the second shorting bar on the at least one layer of insulating film.
7. The liquid crystal display device according to claim 6 , wherein the second shorting bar includes the same metal as any one of the gate line and the data line.
8. The liquid crystal display device according to claim 6 , wherein the second dummy line includes the same metal as the pixel electrode.
9. The liquid crystal display device according to claim 6 , wherein the at least one layer of insulating film is the gate insulating film and the protective film.
10. The liquid crystal display device according to claim 6 , wherein the at least one layer of insulating film is the protective film.
11. A method of fabricating a liquid crystal display device comprising:
providing a substrate of an in-plane switching liquid crystal display device having a display part and a non-display part;
forming a gate line on the substrate;
forming a common line substantially parallel to the gate line;
forming a data line crossing the gate line and the common line while being insulated therefrom, to define a pixel area; and
forming at least one capacitor in the non-display part and connected to at least one of the gate line, the common line and the data line for storing a remaining electric charge component in the display part and eliminating the stored electric charge component,
wherein the component is a remaining electric charge component in the display part not induced from the outside, and
further comprising:
forming a common electrode in the display part of the substrate and connected to the common line;
forming a thin film transistor at a crossing area of the gate line and the data line;
forming a gate insulating film between the gate line and the data line;
forming a protective film on the gate insulating film for protecting the thin film transistor; and
forming a pixel electrode connected to the thin film transistor to form a horizontal electric field with the common electrode,
wherein the capacitor includes:
a first capacitor connected to at least one of the gate line and the common line; and
a second capacitor connected to the data line, and
further comprising:
providing a first static electricity prevention means in the non-display part of the substrate and connected to the first capacitor; and
providing a second static electricity prevention means in the non-display part of the substrate and connected to the second capacitor,
wherein the first capacitor includes:
a first shorting bar connected to the first static electricity prevention means;
at least one layer of insulating film on the first shorting bar; and
a first dummy line to overlap the first shorting bar on the at least one layer of insulating film.
12. The method of fabricating a liquid crystal display device according to claim 11 , wherein the first shorting bar includes the same metal as any one of the gate line and the data line.
13. The method of fabricating a liquid crystal display device according to claim 11 , wherein the first dummy line includes the same metal as the pixel electrode.
14. The method of fabricating a liquid crystal display device according to claim 11 , wherein the at least one layer of insulating film is the gate insulating film and the protective film.
15. The method of fabricating a liquid crystal display device according to claim 11 , wherein the at least one layer of insulating film is the protective film.
16. The method of fabricating a liquid crystal display device according to claim 11 , wherein the second capacitor includes:
a second shorting bar connected to the second static electricity prevention means;
at least one layer of insulating film on the second shorting bar; and
a second dummy line to overlap the second shorting bar on the at least one layer of insulating film.
17. The method of fabricating a liquid crystal display device according to claim 16 , wherein the second shorting bar includes the same metal as any one of the gate line and the data line.
18. The method of fabricating a liquid crystal display device according to claim 16 , wherein the second dummy line includes the same metal as the pixel electrode.
19. The method of fabricating a liquid crystal display device according to claim 16 , wherein the at least one layer of insulating film is the gate insulating film and the protective film.
20. The method of fabricating a liquid crystal display device according to claim 16 , wherein the at least one layer of insulating film is the protective film.