Amorphous silicon thin film transistor-liquid crystal display device and method of manufacturing the same
First Claim
1. A substrate for a display device, comprising:
- a base substrate including a display region and a driving circuit region;
a plurality of switching transistors formed in the display region, each of the switching transistors including amorphous silicon;
a plurality of driving transistors formed in the driving circuit region, each of the driving transistors including amorphous silicon; and
a protection layer formed on the base substrate to cover the switching transistors and the driving transistors; and
an electrode pattern formed on the protection layer, the electrode pattern including a pixel electrode electrically connected to one of the switching transistors, and a connecting electrode electrically connecting two of the driving transistors.
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Accused Products
Abstract
In an amorphous silicon thin film transistor-liquid crystal display device and a method of manufacturing the same, gate patterns including a gate line and a gate electrode are formed on an insulation substrate having a display region and a driving circuit region on which a plurality of shift registers are formed, a gate insulating film, active layer patterns and data patterns including source and drain electrodes are formed successively on the substrate, a passivation layer on the substrate has a first contact hole exposing a drain electrode of the display region and second and third contact holes respectively exposing a gate electrode and source and drain electrodes of a first transistor of each of the shift registers, an electrode patterns on the passivation layer include a first electrode connected to the drain electrode of the display region through the first contact hole and a second electrode connecting the gate electrode to the source and drain electrodes of the first transistor through the second and third contact holes, and the gate driving circuit including the shift registers and the wirings are integrated on the insulating substrate without an additional process, thereby simplifying the manufacturing process.
21 Citations
20 Claims
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1. A substrate for a display device, comprising:
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a base substrate including a display region and a driving circuit region;
a plurality of switching transistors formed in the display region, each of the switching transistors including amorphous silicon;
a plurality of driving transistors formed in the driving circuit region, each of the driving transistors including amorphous silicon; and
a protection layer formed on the base substrate to cover the switching transistors and the driving transistors; and
an electrode pattern formed on the protection layer, the electrode pattern including a pixel electrode electrically connected to one of the switching transistors, and a connecting electrode electrically connecting two of the driving transistors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14)
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8. A liquid crystal display (LCD) device comprising:
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a first substrate including;
a base substrate including a display region and a driving circuit region;
a plurality of switching transistors formed in the display region, each of the switching transistors including amorphous silicon;
a plurality of driving transistors formed in the driving circuit region, each of the driving transistors including amorphous silicon; and
a protection layer formed on the base substrate to cover the switching transistors and the driving transistors; and
an electrode pattern formed on the protection layer, the electrode pattern including a pixel electrode electrically connected to one of the switching transistors, and a connecting electrode electrically connecting two of the driving transistors;
a second substrate facing the first substrate; and
a liquid crystal layer disposed between the first and the second substrates. - View Dependent Claims (9, 10, 11, 12)
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15. A method of manufacturing a substrate for a display device, comprising:
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forming a gate electrode layer on a base substrate having a display region and a driving circuit region;
patterning the gate electrode layer to form gate electrodes of switching transistors in the display region, gate electrodes of driving transistors in the driving circuit region and a main signal line in the driving circuit region;
forming a gate insulation layer on the base substrate to cover the gate electrodes of the driving transistors and the switching transistors, and the main signal line;
forming an active layer pattern on the gate insulation layer;
forming a data electrode layer on the active layer pattern and the gate insulation layer;
patterning the data electrode layer to form drain and source electrodes of the switching transistors in the display region, drain and source electrodes of the driving transistors in the driving circuit region, and a branch signal line extended from one of the drain and source electrodes of the driving transistors;
forming a passivation layer on the base substrate;
forming a first contact hole that exposes a portion of the main signal line, and a second contact hole that exposes a portion of the branch signal line;
forming a electrode layer on the passivation layer; and
patterning the electrode layer to form pixel a electrode electrically connected to one of the drain electrodes of the switching transistors, a first connecting electrode connecting two of the driving transistors, and a second connecting electrode connecting the main signal line and one of the driving transistors. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification