Lg Display Co., Ltd.

Bung-Goo Kim

Ka-Kyung Kim

A COG type LCD device includes a first substrate including a display area and first, second, third and fourth non-display areas, gate and data lines in the display area on the first substrate and defining pixel regions, switching thin film transistor at each crossing portion of the gate and data lines and connected to the gate and data lines, a pixel electrode in each pixel region and connected to the thin film transistor, first testing thin film transistors in the second non-display area connected to the data lines and spaced apart from each other with a constant interval therebetween, first, second and third data testing lines connected to one ends of the data lines through the first testing thin film transistors, first, second and third data testing pads connected to the first, second and third data testing lines, respectively, data link lines in the first non-display area and connected to another ends of the data lines, second testing thin film transistors in the first non-display area and connected to the data link lines, gate link lines connected to the gate lines, third testing thin film transistors connected to the gate link lines, gate testing lines connected to the gate lines through the third testing thin film transistors, gate testing pads connected to the gate testing lines, a common testing line and a common pad in the non-display area, a second substrate spaced apart from the first substrate, a color filter layer and a common electrode sequentially formed on the second substrate, wherein the common electrode is connected to the common testing line, and a liquid crystal layer between the first and second substrates, wherein a driving IC is attached in the first non-display area.

Chip on glass type LCD device including testing thin film transistors, testing lines and testing pads and inspecting method of the same

An array substrate for a liquid crystal display device includes a substrate having a display region and a non-display region at a periphery of the display region; a gate line, a data line, a thin film transistor and a pixel electrode on the substrate and in the display region; a drive integrated circuit on the substrate and in the non-display region; first and second test pads at both sides of the drive integrated circuit, respectively; a common voltage line on the substrate and along edges of the non-display region; and first and second static electricity protecting units on the substrate and in the display region, the first static electricity protecting unit connecting the first test pad with the common voltage line, and the second static electricity protecting unit connecting the second test pad with the common voltage line.

Growing community of inventors

Gyeongsangbuk-do, South Korea

Bung-Goo Kim