Liquid crystal display device
View Patent ↗A liquid crystal display device and a manufacturing method thereof which can suppress chipping of an alignment film or the like are provided. A liquid crystal display device and a manufacturing method thereof which can obviate the complication of manufacturing steps and the increase of a manufacturing cost are also provided. A liquid crystal display device includes: a TFT substrate; a counter substrate; and liquid crystal sandwiched between the TFT substrate and the counter substrate. A plurality of color filters are arranged on the counter substrate, and spacers are formed by stacking the plurality of color filters and by covering a surface of stacked color filters with an overcoat layer. Pedestals are formed on the TFT substrate in a state where the pedestal faces the spacer in an opposed manner. The pedestal is formed by stacking at least a semiconductor layer and a metal layer formed which are simultaneously with a thin film transistor on the TFT substrate. A width of a pedestal portion constituted of the semiconductor layer is substantially equal to a width of the spacer.
1. A liquid crystal display device comprising:
a TFT substrate;
a counter substrate; and
liquid crystal sandwiched between the TFT substrate and the counter substrate,
wherein a plurality of different color filters are arranged on the counter substrate, and
spacers are formed by stacking the plurality of different color filters and by covering a surface of the stacked different color filters with an overcoat layer,
pedestals are formed on the TFT substrate in a state where the pedestal faces the spacer in an opposed manner,
an alignment film is formed between the pedestals and the liquid crystal,
wherein the pedestal is formed by stacking, on a gate scanning line, at least a semiconductor layer and a metal layer which are formed simultaneously with a thin film transistor on the TFT substrate, a width of the semiconductor layer in a direction of extension of the gate scanning line is substantially equal to a largest width of the spacer in the direction of extension of the gate scanning line, and a width of the metal layer in the direction of extension of the gate scanning line is substantially smaller than a largest width of the spacer in the direction of extension of the gate scanning line, and
wherein a width of the semiconductor layer in a direction of extension of a drain signal line is substantially equal to a width of the gate scanning line in the direction of extension of the drain signal line.
2. A liquid crystal display device according to claim 1 , wherein an insulation film and the alignment film are formed on a liquid crystal side of the semiconductor layer and the metal layer of the pedestal, and a width of the semiconductor layer at the pedestal portion is substantially equal to a width of the gate scanning line.
3. A liquid crystal display device according to claim 1 , wherein a portion of the pedestal having a width corresponding to the width of the metal layer is arranged for contact with the spacer formed of the stacked different color filter and a stepped portion of the pedestal is provided at a position corresponding to the width of the semiconductor layer so as to be spaced sufficient distance from the spacer to substantially avoid contact with a surface of the spacer and substantially suppress peeling-off of at least one of the overcoat layer and the alignment film.
4. A liquid crystal display device according to claim 3 , wherein the metal layer is stacked on the semiconductor layer and is disposed closer to the spacer than the semiconductor layer.
5. A liquid crystal display device according to claim 1 , wherein the spacer has an elliptical planar shape.
6. A liquid crystal display device according to claim 1 , wherein the spacer has a rectangular planar shape.