Liquid crystal display device and fabricating method thereof
First Claim
1. A method of fabricating a liquid crystal display device, comprising:
- providing first and second substrates;
a first mask process of forming a first mask pattern group including a gate line, a gate electrode, a common line, a common electrode, a data link and a lower pad electrode to be connected to the data line on the first substrate;
a second mask process of forming a gate insulating film and a semiconductor layer on the first mask pattern group formed by the first mask process, defining a pixel hole spaced apart from the common line and a common electrode to pass through the gate insulating film and the semiconductor layer in a pixel area thereby exposing a surface of the first substrate, forming first and second contact holes for exposing the lower pad electrode and the data link and forming an upper pad electrode connected to the lower pad electrode and a contact electrode to be connected to the data link and the data line in the corresponding contact hole, and forming a pixel electrode to be contacted with the surface of the first substrate and a side wall of the gate insulating film exposed through the pixel hole in the pixel hole; and
a third mask process of forming a source and drain metal pattern including a data line crossing the gate line to define the pixel area, a source electrode and a drain electrode on the first substrate, and exposing an active layer of the semiconductor pattern to define a channel between the source electrode and the drain electrode,wherein a portion of the drain electrode covers a part of upper surface of the pixel electrode at bottom part of the pixel hole,wherein the first to third mask processes are sequentially performed, and wherein the second mask process includes;
forming a photo-resist pattern on the semiconductor layer;
forming the pixel hole and the first and second contact holes using the photo-resist pattern as a mask;
forming a transparent conductive film on the photo-resist pattern, and forming transparent conductive patterns in the pixel hole and the first and second contact holes; and
removing the photo-resist pattern with the transparent conductive film formed on the photo-resist pattern.
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Accused Products
Abstract
A liquid crystal display device having first and second substrates; a gate line on the first substrate; a data line crossing the gate line to define a pixel area, the gate line and the data line having a gate insulating film there between; a thin film transistor including a gate electrode, a source electrode, a drain electrode and a semiconductor layer for defining a channel between the source electrode and the drain electrode; a common line in parallel to the gate line on the first substrate; a common electrode extended from the common line in the pixel area; and a pixel electrode spaced apart from the common line and the common electrode in the pixel area to be defined in a pixel hole passing through the gate insulating film, wherein the semiconductor layer overlaps with a source and drain metal pattern including the data line, the source electrode and the drain electrode, and wherein the drain electrode protrudes from the semiconductor layer toward an upper portion of the pixel electrode to be connected to the pixel electrode.
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Citations
32 Claims
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1. A method of fabricating a liquid crystal display device, comprising:
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providing first and second substrates; a first mask process of forming a first mask pattern group including a gate line, a gate electrode, a common line, a common electrode, a data link and a lower pad electrode to be connected to the data line on the first substrate; a second mask process of forming a gate insulating film and a semiconductor layer on the first mask pattern group formed by the first mask process, defining a pixel hole spaced apart from the common line and a common electrode to pass through the gate insulating film and the semiconductor layer in a pixel area thereby exposing a surface of the first substrate, forming first and second contact holes for exposing the lower pad electrode and the data link and forming an upper pad electrode connected to the lower pad electrode and a contact electrode to be connected to the data link and the data line in the corresponding contact hole, and forming a pixel electrode to be contacted with the surface of the first substrate and a side wall of the gate insulating film exposed through the pixel hole in the pixel hole; and a third mask process of forming a source and drain metal pattern including a data line crossing the gate line to define the pixel area, a source electrode and a drain electrode on the first substrate, and exposing an active layer of the semiconductor pattern to define a channel between the source electrode and the drain electrode, wherein a portion of the drain electrode covers a part of upper surface of the pixel electrode at bottom part of the pixel hole, wherein the first to third mask processes are sequentially performed, and wherein the second mask process includes; forming a photo-resist pattern on the semiconductor layer; forming the pixel hole and the first and second contact holes using the photo-resist pattern as a mask; forming a transparent conductive film on the photo-resist pattern, and forming transparent conductive patterns in the pixel hole and the first and second contact holes; and removing the photo-resist pattern with the transparent conductive film formed on the photo-resist pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification