Array substrate for IPS mode liquid crystal display device
View Patent ↗The present invention provides an array substrate for an IPS-LCD device. The array substrate has an image display area and an image non-display area. A plurality of pixels are disposed in the display area. A plurality of switching devices each of that is disposed in each pixel are on the substrate. First and second lines apply signals to each switching device, and a plurality of first electrodes on the substrate are connected to each switching device. A plurality of second electrodes on the substrate are spaced apart from each first electrode. A plurality of electrostatic discharge devices are arranged in the non-display area, and each electrostatic discharge device is at a distance of more than one pixel pitch. A plurality of pads are arranged in the non-display area. A plurality of first connecting lines each of that connects each pixel to each electrostatic discharge device are arranged in the non-display area. A plurality of second connecting lines connect the electrostatic discharge devices to the pads.
1. An in-plane switching liquid crystal display device, comprising:
a substrate having a display region and a non-display region;
a plurality of pixels in the display region;
a plurality of first and second electrodes on the substrate such that an electric field is formed between the first and second electrodes substantially parallel to the substrate when a voltage is applied to the first and second electrodes;
a plurality of electrostatic discharge devices in the non-display region, wherein each electrostatic discharge device is at a distance of more than one pixel pitch from the pixels;
a plurality of first connecting lines in the non-display region, each first connecting line connecting a pixel to one of the electrostatic discharge devices,
a plurality of second connecting lines in the non-display region; and
a plurality of pads in the non-display region,
wherein one electrostatic discharge device is located between one of the first connecting lines and one of the second connecting lines,
wherein each pad is between about 1 to about 2.5 millimeters from each electrostatic discharge device.
2. The device of claim 1 , further comprising a plurality of switching devices on the substrate.
3. The device of claim 2 , wherein each switching device is disposed in each pixel.
4. The device of claim 2 , wherein the switching device includes a thin film transistor.
5. The device of claim 1 , further comprising first and second lines on the substrate.
6. The device of claim 5 , wherein the first and second lines apply signals to each switching device.
7. The device of claim 6 , wherein the first line includes a gate line.
8. The device of claim 6 , wherein the second line includes a data line.
9. The device of claim 1 , wherein the first electrodes include a pixel electrode.
10. The device of claim 1 , wherein the second electrodes includes a common electrode.
11. The device of claim 1 , wherein one pixel pitch is between about 1 mm to about 1.5 mm.
12. The device of claim 1 , wherein each second connecting line connects each electrostatic discharge device to each pad.
13. The device of claim 1 , wherein a voltage of the first connecting lines is different from a voltage of the electrostatic discharge devices.
14. The device of claim 1 , wherein each first connecting line receives signal voltage of inverted phase.
15. The device of claim 1 , further comprising an auxiliary line in the non-display region.
16. The device of claim 15 , wherein the auxiliary line connects each of the electrostatic discharge devices.
17. The device of claim 15 , wherein the auxiliary line receives a signal applied to the second electrode.