Liquid crystal display device and its manufacturing method
AssigneeNEC Corporation
InventorsMasanobu Hidehira, Michiaki Sakamoto, Shouichi Kuroha, Mamoru Okamoto
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Abstract
In an active matrix type liquid crystal display device comprising a TFT having gate lines and data lines formed in a matrix manner and being connected to a source line, a contact hole for connecting the source line with a pixel electrode is formed in a position overlapping a disclination line. The contact hole is formed in a position overlapping a capacitance portion of the gate line. The gate line and the source line are provided to oppose to each other, and electrostatic capacitance is stored therebetween.
Claims11
A liquid crystal display device comprising:
- a pair of substrates;
- a liquid crystal sealed between said pair of substrates;
- a plurality of data lines and a plurality of scanning lines, being arranged on one surface of one of said pair of substrates and crossing each other;
- a switching element having one end of a current path connected to the corresponding data line and a control end connected to the corresponding scanning line;
- a wiring connected to the other end of the current path of said switching element;
- an insulating layer, being formed on said wiring and having a contact hole through which an end portion of said wiring is exposed;
- a pixel electrode, being formed on said insulating layer and electrically connected to the end portion of said wiring through the contact hole;
- and
- an alignment film, being formed on said pixel electrode and in contact with said liquid crystal,
- wherein said contact hole is formed at a position overlapping a region where disclination occurs.
A liquid crystal display device manufacturing method, the liquid crystal display device comprising a thin film transistor, a wiring connected to said thin film transistor, a pixel electrode electrically connected to said wiring, and an alignment film formed on said pixel electrode, comprising steps of:
- forming an insulating layer overlying the thin film transistor and the wiring;
- forming a contact hole in the insulating layer through which an end portion of said wiring is exposed;
- forming the pixel electrode on the insulating layer connected electrically with the wiring through the contact hole;
- and
- forming the alignment film on the pixel electrode,
- wherein the step of forming the contact hole comprising a step of forming the contact hole in a position overlapping a region where disclination occurs.
Dependencies are inferred from the claim text.