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Thin film transistor display panel and manufacturing method of the same

  • US 9,184,090 B2
  • Filed: 06/01/2011
  • Issued: 11/10/2015
  • Est. Priority Date: 06/04/2010
  • Status: Active Grant
First Claim
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1. A TFT display panel comprising:

  • a gate line having a gate pad part, connected to a gate electrode and disposed on an insulation substrate;

    a first gate insulting layer disposed on the gate line and the gate electrode and comprising silicon nitride(SiNx);

    a second gate insulting layer disposed on the first gate insulting layer and comprising silicon oxide(SiOx);

    an oxide semiconductor layer overlapping the gate electrode and having a channel part;

    a source electrode and a drain electrode disposed on the oxide semiconductor layer to be separated from each other;

    a first passivation layer disposed on the source electrode and the drain electrode and comprising silicon oxide(SiOx); and

    a second passivation layer disposed on the first passivation layer and comprising silicon nitride(SiNx),wherein the second passivation layer, the first passivation layer, the second gate insulating layer, and the first gate insulating layer have a contact hole exposing the gate pad part, andthe contact hole has a shape in which the cross-sectional area increases from the bottom surface at the gate pad part upward.

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