Liquid crystal display device
View Patent ↗An LCD device provides enhanced display quality. An insulating layer is formed on a first substrate. The insulating layer covers the contact portion of a switching device in which the switching device is electrically connected to a transparent electrode and has an opening for exposing a portion of the transparent electrode. A reflection electrode is electrically connected to the transparent electrode through the opening. The insulation layer covers a first portion of a driving circuit formed on the first substrate. A sealant is interposed between the first and second substrate to engage the first and second substrate and to cover a second portion of the driving circuit. Therefore, the driver circuit may operate normally, and the distortion of the signal outputted from the driver circuit may be prevented.
1. A liquid crystal display device comprising:
a first substrate comprising a display part comprising a switching element and a pixel electrode electrically connected to the switching element to display an image and a driver part comprising a plurality of transistors configured to output a gate driving signal to the display part to drive the display part;
a second substrate facing the first substrate;
a sealing member disposed between the first and second substrates and covering at least a portion of the driver part; and
a liquid crystal layer disposed between the first and second substrates,
wherein the plurality of transistors configured to output the gate driving signal to the display part comprise:
a first conductive pattern;
a second conductive pattern disposed in a different layer from the first conductive pattern;
an insulation layer that covers the first conductive pattern and the second conductive pattern and comprises a first contact hole overlapping the first conductive pattern and a second contact hole overlapping the second conductive pattern; and
a connection layer electrically connecting the first conductive pattern and the second conductive pattern through the first contact hole and the second contact hole and comprising a transparent conductive material.
2. The liquid crystal display device of claim 1 , wherein the sealing member entirely covers the driver part.
3. The liquid crystal display device of claim 1 , wherein the second substrate further comprises a common electrode facing the pixel electrode.
4. The liquid crystal display device of claim 3 , wherein the common electrode does not overlap the driver part.
5. The liquid crystal display device of claim 1 , wherein the first substrate further comprises a gate line and a data line, which are electrically connected to the switching element.
6. The liquid crystal display device of claim 1 , wherein the driver part is configured to receive an electric power and a clock signal to generate and output a gate driving signal to the gate line.
7. The liquid crystal display device of claim 6 , wherein the insulation layer comprises an organic insulation layer.
8. The liquid crystal display device of claim 7 , wherein the first conduction pattern comprises a gate electrode for the transistors, and the second conduction pattern comprises a source electrode and a drain electrode for the transistors.
9. The liquid crystal display device of claim 8 , wherein the first conduction pattern comprises a gate electrode of a first transistor and an end contacting the connection layer,
and the second conduction pattern comprises a first end contacting the connection layer and a second end, which is a source electrode of a second transistor.
10. The liquid crystal display device of claim 1 , wherein the transparent conductive material comprises indium tin oxide or indium zinc oxide.
11. The liquid crystal display device of claim 1 , wherein the transistors of the driver part and the switching element of the display part are formed in a same process.
12. A liquid crystal display device comprising:
a first substrate comprising a display part comprising a switching element and a pixel electrode electrically connected to the switching element to display an image and a driver part comprising a plurality of transistors configured to output a gate driving signal to the display part to drive the display part;
a second substrate facing the first substrate;
a sealing member disposed between the first and second substrates; and
a liquid crystal layer disposed between the first and second substrates,
wherein the plurality of transistors configured to output the gate driving signal to the display part comprise:
a first conductive pattern;
a second conductive pattern disposed in a different layer from the first conductive pattern;
an insulation layer that covers the first conductive pattern and the second conductive pattern and comprises a first contact hole overlapping the first conductive pattern and a second contact hole overlapping the second conductive pattern; and
a connection layer electrically connecting the first conductive pattern and the second conductive pattern through the first contact hole and the second contact hole and comprising a transparent conductive material.
13. The liquid crystal display device of claim 12 , wherein the sealing member covers the driver part.
14. The liquid crystal display device of claim 12 , wherein the second substrate further comprises a common electrode facing the pixel electrode.
15. The liquid crystal display device of claim 14 , wherein the common electrode does not overlap the driver part.
16. The liquid crystal display device of claim 12 , wherein the first conduction pattern comprises a gate electrode for the transistors, and the second conduction pattern comprises a source electrode and a drain electrode for the transistors.
17. The liquid crystal display device of claim 16 , wherein the first conduction pattern comprises a gate electrode of a first transistor and an end contacting the connection layer,
and the second conduction pattern comprises a first end contacting the connection layer and a second end, which is a source electrode of a second transistor.
18. The liquid crystal display device of claim 12 , wherein the transparent conductive material comprises indium tin oxide or indium zinc oxide.
19. The liquid crystal display device of claim 12 , wherein the transistors of the driver part and the switching element of the display part are formed in a same process.