Thin-film transistor liquid crystal display substrate

Details Thin-film transistor liquid crystal display substrate Thin-film transistor liquid crystal display substrate

2006-06-06

2006-06-06

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S139000

Reexamination Certificate

active

07057676

ABSTRACT:
A thin-film transistor liquid crystal display (TFT-LCD) substrate mainly includes a substrate and a planarization layer thereon. The substrate is defined to form a thin-film transistor (TFT) and a contact plug thereon and the source/drain of the TFT is electrically coupled with the contact plug. The planarization layer is disposed on the substrate and the planarization layer has a via hole for penetrating the planarization layer to expose to the contact plug. The configuration of the cross-section of the via hole includes a straight edge so that the via hole is able to be formed with a less steep taper at a lateral view by reflow.

REFERENCES:
patent: 6713825 (2004-03-01), Hwang
patent: 6924863 (2005-08-01), Nishida et al.

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