DISPLAY SUBSTRATE, DISPLAY DEVICE HAVING THE SAME AND METHOD OF MANUFACTURING THE SAME
First Claim
1. A display substrate, comprising:
- an insulating substrate;
a thin film transistor arranged on the insulating substrate, the thin film transistor comprising a control electrode, a semiconductor pattern, a first electrode, and a second electrode spaced apart from the first electrode;
a contact electrode, the contact electrode comprising;
a contact portion electrically connected to the second electrode, the contact portion exposing a portion of the semiconductor pattern; and
an undercut portion electrically connected to the contact portion, the undercut portion extending beyond an edge of the semiconductor pattern; and
a pixel electrode electrically connected to the contact portion of the contact electrode.
1 Assignment
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Accused Products
Abstract
A display substrate includes an insulating substrate, a thin film transistor, a contact electrode, and a pixel electrode. The thin film transistor includes a control electrode, a semiconductor pattern, a first electrode, and a second electrode. The control electrode is on the insulating substrate. The semiconductor pattern is on the control electrode. The first electrode is on the semiconductor pattern. The second electrode is spaced apart from the first electrode on the semiconductor pattern. The contact electrode includes a contact portion and an undercut portion. The contact portion is electrically connected to the second electrode to partially expose the semiconductor pattern. The undercut portion is electrically connected to the contact portion to cover the semiconductor pattern. The pixel electrode is electrically connected to the second electrode through the contact portion of the contact electrode.
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Citations
10 Claims
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1. A display substrate, comprising:
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an insulating substrate; a thin film transistor arranged on the insulating substrate, the thin film transistor comprising a control electrode, a semiconductor pattern, a first electrode, and a second electrode spaced apart from the first electrode; a contact electrode, the contact electrode comprising; a contact portion electrically connected to the second electrode, the contact portion exposing a portion of the semiconductor pattern; and an undercut portion electrically connected to the contact portion, the undercut portion extending beyond an edge of the semiconductor pattern; and a pixel electrode electrically connected to the contact portion of the contact electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A liquid crystal display device, comprising:
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a display substrate, the display substrate comprising; an insulating substrate; a thin film transistor comprising a control electrode on the insulating substrate, a semiconductor pattern on the control electrode, a first electrode on the semiconductor pattern, and a second electrode on the semiconductor pattern and spaced apart from the first electrode; a contact electrode comprising a contact portion electrically connected to the second electrode and exposing a portion of the semiconductor pattern, and an undercut portion electrically connected to the contact portion extending beyond an edge of the semiconductor pattern; and a pixel electrode electrically connected to the contact portion of the contact electrode; an opposite substrate, the opposite substrate comprising; an insulating substrate; and a common electrode on the insulating substrate and arranged corresponding to the pixel electrode; and a liquid crystal layer interposed between the display substrate and the opposite substrate.
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Specification