Display device
Disclosed is a display device. The display device includes a panel in which a plurality of pixels are respectively formed in a plurality of pixel areas defined by intersections between a plurality of gate lines and a plurality of data lines, a source driving IC coupled to the plurality of data lines in a first non-display area of the panel and configured to respectively supply data voltages to the plurality of data lines, and an ESD circuit in which, to prevent static electricity from flowing into the plurality of data lines, in the first non-display area, a end of one side of the ESD circuit is coupled to a corresponding data line, a end of the other side is coupled to a power line, and a length of a channel through which a current flows is formed greater than a width of the channel.
1. A display device comprising:
a panel in which a plurality of pixels are respectively formed in a plurality of pixel areas defined by intersections between a plurality of gate lines and a plurality of data lines;
a source driving IC coupled to the plurality of data lines in a first non-display area of the panel, and configured to respectively supply data voltages to the plurality of data lines; and
an electrostatic discharge (ESD) circuit in which, to prevent static electricity from flowing into the plurality of data lines, in the first non-display area, an end of one side of the ESD circuit is coupled to a corresponding data line, and an end of the other side is coupled to a power line,
wherein the ESD circuit comprises a thin film transistor (TFT), and the TFT comprises:
a glass substrate;
a gate deposited on the glass substrate;
a gate insulating layer deposited on the glass substrate;
the channel deposited on the gate insulating layer;
a channel insulating layer deposited on the gate insulating layer comprising the channel;
a first terminal formed at one side of the channel and on the channel insulating layer, and coupled to the channel; and
a second terminal formed at the other side of the channel and on the channel insulating layer, and coupled to the channel,
wherein each of the first and second terminals is formed in a U-shape, and open portions of the U-shape face each other, and
a length of the channel from the first terminal to the second terminal is 1.5 or more times greater than a width of the channel.
2. The display device of claim 1 , wherein,
when the first terminal is coupled to a corresponding data line, the second terminal is coupled to the power line, or
when the second terminal is coupled to the corresponding data line, the first terminal is coupled to the power line.
3. The display device of claim 1 , wherein,
a first capacitor is formed between the first terminal and the gate with the channel insulating layer disposed therebetween, and
a second capacitor is formed between the second terminal and the gate with the channel insulating layer disposed therebetween.
4. The display device of claim 3 , wherein when AC static electricity occurs in the data line, the first and second capacitors allow a current to flow through the channel.
5. The display device of claim 1 , wherein the ESD circuit prevents a leakage current from flowing to the ESD circuit in proportion to a resistance value corresponding to the length.
6. The display device of claim 1 , wherein the ESD circuit is provided in correspondence with each of the plurality of data lines.
7. The display device of claim 1 , wherein the channel comprises:
a first channel terminal coupled to the first terminal through a first contact hole formed at the channel insulating layer;
a second channel terminal coupled to the second terminal through a second contact hole formed at the channel insulating layer; and
a third channel terminal coupled between the first and second channel terminals.
8. The display device of claim 7 , wherein a length of the third channel terminal is greater than a width of the third channel terminal.