US Patent 10162237 Display device being resistant to short-circuiting

A display device includes a first substrate including a display area and a peripheral area disposed in a periphery of the display area. A gate line is disposed in the display area. A data line is insulated from the gate line and intersects the gate line. The data line includes a first portion and a second portion. The first portion is disposed in the display area, and the second portion is connected to the first portion and is disposed in the peripheral area. A thin-film transistor (TFT) is disposed in the display area of the first substrate and is connected to the gate and data lines. A first insulating pattern is disposed on the TFT. A second insulating pattern is disposed in the peripheral area and covers a part of the second portion of the data line. The second insulating pattern includes a same material as the first insulating pattern.