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US 2003/0117536 A1Published application
Liquid crystal display device
AssigneeLG. Philips LCD Co., Ltd.
InventorJae Young Jeon
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AssigneeLG. Philips LCD Co., Ltd.
InventorJae Young Jeon
Estimating the term…
In a liquid crystal display device that prevents corrosion of a signal line in the device, a plurality of signal lines are provided at the inner side of a cutting line on a substrate. A shorting bar is provided at the outer side of the cutting line. A connection line connects the signal lines to the shorting bar in such a manner to cross the cutting line. Thus, the signal line is connected to the shorting bar with the aid of the connection line formed from a transparent conductive material at an area corresponding to the cutting line of a lower substrate. The connection line is exposed when the lower substrate is cut along the cutting line, so that corrosion of the signal line can be prevented.
A liquid crystal display device, comprising a plurality of signal lines provided at an inner side of a cutting line on a substrate;
A method for preventing corrosion of a liquid crystal display device having a plurality of signal lines, the method comprising:
Dependencies are inferred from the claim text.
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Active matrix addressed cells: wiring, e.g. gate line, drain line
Active matrix addressed cells: arrangements to prevent high voltage or static electricity failures
Active matrix addressed cells: checking; Testing
Optical devices or arrangements for the control of light by modification of
Term end not estimated
1. Field of the Invention
This invention relates to a liquid crystal display, and more particularly to a liquid crystal display device that is adaptive for preventing corrosion of a signal line.
2. Description of the Related Art
These and other objects of the invention will be apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is a plan view showing a configuration of a conventional liquid crystal display device;
FIG. 2 illustrates connection portions between the gate shorting bars and the gate lines shown in FIG. 1;
Referring to FIG. 6, there is shown a COG-type liquid crystal display device according to a first embodiment of the present invention.
The COG-type liquid crystal display device includes first and second data shorting bars 54a and 54b for testing data, lines 72. The first and second data shorting bars 54a and 54b are provided at the lower side of the picture display part (not shown). The first data shorting bar 54a is connected to even-numbered data lines DL2, DL4, . . . , DLn for the purpose of testing the even-numbered data lines DL2, DL4, . . . , DLn. The first data shorting bar 54a is formed from a data metal layer such as chrome (Cr), molybdenum (Mo) or copper (Cu), etc., and a first data test electrode 56 extended from the first data shorting bar 54a is formed at a lower substrate 51 provided with a gate insulating film 82 as shown in FIG. 7. The first data test electrode 56 is connected, via a first data contact hole 80a passing through a protective layer 84, to a transparent metal pattern 90. The transparent metal pattern 90 is connected, via a second data contact hole 80b passing through the protective layer 84, to the even-numbered data line 72.
The second data shorting bar 54b is connected to odd-numbered data lines DL1, DL3, . . . , DL(n-1) for the purpose of testing the odd-numbered data lines DL1, DL3, . . . , DL(n-1). The second data shorting bar 54b is formed from a gate metal layer such as aluminum (Al) or aluminum/neodymium (Al/Nd); and a second data test electrode 58 extended from the second data shorting bar 54b is provided at the lower substrate 51 as shown in FIG. 8. The second data test electrode 58 is connected, via the first data contact hole 80a passing through the gate insulating film 82 and the protective layer 84, to the transparent metal pattern 90. The transparent metal pattern 90 is connected, via a second data contact hole 80b passing through the protective layer 84, to the odd-numbered data line 72.