US 2016/0103368 A1 · LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Abstract

A liquid crystal display device includes: a TFT substrate formed with an alignment film on a pixel; a counter substrate disposed opposite to the TFT substrate and formed with an alignment film on a top surface on the TFT substrate side; and a liquid crystal sandwiched between the TFT substrate and the counter substrate. In the liquid crystal display device, the alignment film is configured of a first alignment film layer contacting the liquid crystal layer and having at least one kind of polyimide and a second alignment film layer formed below the first alignment film layer and having at least one kind of polyimide, the first alignment film layer is a material that is enabled to provide liquid crystal alignment regulating force by applying polarized light, and the first alignment film layer and the second alignment film layer contain a common polyimide structure.

Claims20

Dependent claims

A liquid crystal display device comprising:

a TFT substrate having a pixel electrode and a TFT and formed with an alignment film on a pixel;
a counter substrate disposed opposite to the TFT substrate and formed with an alignment film on a top surface on the TFT substrate side;
and
a liquid crystal sandwiched between the alignment film of the TFT substrate and the alignment film of the counter substrate,
wherein:
the alignment film is configured of a first alignment film layer contacting the liquid crystal layer and having at least one kind of polyimide and a second alignment film layer formed below the first alignment film layer and having at least one kind of polyimide;
the first alignment film layer is a material that is enabled to provide liquid crystal alignment regulating force by applying polarized light;
and
the first alignment film layer and the second alignment film layer contain a common polyimide structure.

6 more elements

A manufacturing method for a liquid crystal display device including a TFT substrate having a pixel electrode and a TFT and formed with an alignment film on a pixel, a counter substrate disposed opposite to the TFT substrate and formed with an alignment film on a top surface on the TFT substrate side, and a liquid crystal sandwiched between the alignment film of the TFT substrate and the alignment film of the counter substrate, the method comprising the steps of:

preparing the TFT substrate having the pixel electrode and the TFT;
preparing an alignment film material containing a blend of a first polymeric material having a first solubility parameter, a second polymeric material having a second solubility parameter, and a third polymeric material having a third solubility parameter between the first solubility parameter and the second solubility parameter;
subjecting a surface of the TFT substrate or the counter substrate to ozone water processing;
forming an alignment film on the TFT substrate or the counter substrate using the alignment film material after the ozone water processing;
applying a polarized ultraviolet ray to the alignment film to provide a state of liquid crystal alignment regulating force on a top surface layer of the alignment film;
attaching the TFT substrate attached with the alignment film provided with alignment regulating force to the counter substrate;
and
filling a liquid crystal between the TFT substrate and the counter substrate in the attaching step or after the attaching step.

5 more elements

Dependencies are inferred from the claim text.

Liquid crystal display device and manufacturing method thereof

Life of this patent

Liquid crystal display device and manufacturing method thereof

Life of this patent

Abstract

Claims20