Liquid crystal display device and method of manufacturing liquid crystal display device with color filter layer on thin film transistor
View Patent ↗A method of fabricating a liquid crystal display device is provided. The method of fabricating a liquid crystal display device includes forming a thin film transistor including a source electrode and a drain electrode on a substrate, forming a first passivation layer on the substrate, forming a black matrix on the first passivation layer, forming a color filter layer on the first passivation layer in the pixel region, and forming a pixel electrode above the color filter layer and the black matrix by using a single mask.
1. A liquid crystal display device, comprising:
a substrate;
a gate line and a gate electrode on the substrate;
a gate insulating layer on the gate line and the gate electrode;
an active layer on the gate insulating layer over the gate electrode;
an ohmic contact layer on the active layer;
a source electrode, a drain electrode and a data line on the ohmic contact layer, the data line crossing the gate line to define a pixel region;
a first passivation layer on the source and drain electrodes and the data line;
a black matrix on the first passivation layer over the active layer;
a color filter layer on the first passivation layer in the pixel region;
a second passivation layer on the black matrix and the color filter layer, the second passivation layer exposing the color filter layer in the pixel region; and
a pixel electrode on the exposed color filter layer in the pixel region, the pixel electrode connected to the drain electrode, wherein the pixel electrode is disposed in a region excluding the second passivation layer such that the pixel electrode does not overlap the second passivation layer.
2. The device according to claim 1 , wherein the pixel electrode is disposed on a same layer as the second passivation layer.
3. The device according to claim 1 , further comprising a columnar spacer over the gate and data lines.
4. The device according to claim 1 , wherein the second passivation layer is selectively patterned in the pixel region and selectively exposes the color filter layer.
5. The device according to claim 4 , further comprising a common electrode on the selectively exposed color filter layer in the pixel region, the common electrode spaced apart from and coplanar with the pixel electrode.