Thin film transistor display panel and manufacturing method of the same
First Claim
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.
2 Assignments
0 Petitions
Accused Products
Abstract
A TFT display panel having a high charge mobility and making it possible to obtain uniform electric characteristics with respect to a large-area display is provided as well as a manufacturing method thereof. A TFT display panel includes a gate electrode formed on an insulation substrate, a first gate insulting layer formed of SiNx on the gate electrode, a second gate insulting layer formed of SiOx on the first gate insulting layer, an oxide semiconductor layer formed to overlap the gate electrode and having a channel part, and a passivation layer formed of SiOx on the oxide semiconductor layer and the gate electrode, and the passivation layer includes a contact hole exposing the drain electrode. The contact hole has a shape in which the passivation layer of a portion directly exposed together with a metal occupies an area smaller than the upper passivation layer.
-
Citations
10 Claims
-
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, and the contact hole has a shape in which the cross-sectional area increases from the bottom surface at the gate pad part upward. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification