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 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 switching element of the display part comprises:
a gate electrode;
a gate insulation layer covering the gate electrode;
a source electrode disposed on the gate insulation layer; and
a drain electrode disposed on the gate insulation layer and spaced apart from the source electrode,
wherein the driver part comprises:
a first conductive pattern comprising a gate electrode for the transistors;
a second conductive pattern comprising a source electrode and a drain electrode for the transistors and 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 of one transistor of the driver part to the second conductive pattern of a different transistor of the driver part 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 1 , wherein the insulation layer comprises an organic insulation layer.
8. The liquid crystal display device of claim 1 , 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.
9. The liquid crystal display device of claim 1 , wherein the gate electrode of the driver part overlap the source electrode and the drain electrode of the driver part in a plan view.
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.