US 2003/0189685 A1Published application

Liquid crystal display of line-on-glass type

AssigneeLG Display Co., Ltd.

InventorsSeung Kyu Choi, Kwang Soon Park, Chul Woo Im, Sang Moo Song, Choel Min Woo

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Abstract

A line-on-glass (LOG) type liquid crystal display device prevents deterioration in picture quality due to line resistances in LOG signal lines includes a display area having liquid crystal cells arranged at crossings of gate and data lines, a storage capacitor arranged within each of the liquid crystal cells for maintaining charged pixel voltages, and a dummy gate line. A line-on-glass type signal line group outside the display area transmits driving signals to the gate driver integrated circuits for driving the gate lines. A first signal line outside the display area is mounted on gate tape carrier packages. A second signal line connects the first gate low voltage and dummy lines, is insulated from, and crosses the gate lines outside the display area. A third signal line connects the first gate low voltage line and the dummy gate line to connect the first and second gate low voltage lines in parallel.

Claims17

Dependent claims

A line-on-glass liquid crystal display device, comprising:

a plurality of data lines;
a plurality of gate lines crossing the plurality of data lines;
a dummy gate line provided as a first one of the plurality of gate lines;
a picture display area;
a plurality of liquid crystal cells arranged within the picture display area at crossings of the plurality of gate lines and the plurality of data lines;
a storage capacitor arranged within each of the liquid crystal cells for maintaining a charged pixel voltage;
a plurality of gate tape carrier packages;
a plurality of gate driver integrated circuits mounted on the gate tape carrier packages for driving the plurality of gate lines;
a line-on-glass signal line group arranged outside the picture display area for transmitting driving signals to the plurality of gate driver integrated circuits, the line-on-glass signal line group including a gate low voltage line for applying a gate low voltage to the dummy gate line and comprising:
a first gate low voltage line provided on the plurality of gate tape carrier package mounted with the plurality of gate driver integrated circuits outside the picture display area;
a second gate low voltage line connected between the first gate low voltage line and the dummy gate line, insulated from the plurality of gate lines;
and arranged to cross the plurality of gate lines outside the picture display area;
and
a third gate low voltage line connected between the first gate low voltage line and the dummy gate line for connecting the first and second gate low voltage lines in parallel.

11 more elements

A line-on-glass liquid crystal display device, comprising:

a plurality of data lines;
a plurality of gate lines crossing the plurality of data lines;
a dummy gate line provided as a first one of the plurality of gate;
a common voltage supply line for supplying a common voltage;
a picture display area;
a plurality of liquid crystal cells arranged within the picture display area at crossings of the plurality of gate lines and the plurality of data lines;
a storage capacitor arranged within each of the liquid crystal cells for maintaining a charged pixel voltage;
a plurality of gate tape carrier packages;
a plurality of gate driver integrated circuits mounted on the gate tape carrier packages for driving the plurality of gate lines;
a line-on-glass signal line group arranged outside the picture display area for transmitting driving signals to the plurality of gate driver integrated circuits;
and
a static electricity prevention circuit arranged outside the picture display area connected to the plurality of gate lines, and the common voltage supply line,
wherein a potential of the dummy gate line is substantially equal to a potential of others of the plurality of gate lines.

10 more elements

Dependencies are inferred from the claim text.