Liquid crystal display device

A liquid crystal display device where a liquid crystal layer is held between a TFT substrate over which a pixel area and a pixel provided with a TFT are formed in a matrix and a counter substrate arranged opposite to the TFT substrate,

• wherein an organic passivation film is formed in the pixel area, a counter electrode is formed on the organic passivation film, an insulating film is formed on the counter electrode, a pixel electrode having a slit is formed on the insulating film, and an alignment film is formed over the pixel electrode;
• an optical orientation process is applied to the alignment film;
• a contact hole for connecting the pixel electrode with a source electrode of the TFT is formed in the organic passivation film and is provided with a lower hole having a contact portion, an upper hole larger than the lower hole and an inner wall that fastens the lower hole and the upper hole;
• and
• a diameter of the upper hole in the contact hole is larger than a diameter of the source electrode in a part corresponding to the contact hole.

A liquid crystal display device where a liquid crystal layer is held between a TFT substrate over which a pixel area and a pixel provided with a TFT are formed in a matrix and a counter substrate arranged opposite to the TFT substrate,

• wherein an organic passivation film is formed in the pixel area, a pixel electrode is formed on the organic passivation film, an insulating film is formed on the pixel electrode, a counter electrode having a slit is formed on the insulating film, and an alignment film is formed over the counter electrode;
• an optical orientation process is applied to the alignment film;
• a contact hole for connecting the pixel electrode with a source electrode of the TFT is formed in the organic passivation film and is provided with a lower hole having a contact portion, an upper hole larger than the lower hole and an inner wall that fastens the lower hole and the upper hole;
• and
• at least a part of the inner wall in the contact hole functions as a transmissible area for forming an image.

A liquid crystal display device where a liquid crystal layer is held between a TFT substrate over which a pixel area and a pixel provided with a TFT are formed in a matrix and a counter substrate arranged opposite to the TFT substrate,

• wherein an organic passivation film is formed in the pixel area, a pixel electrode is formed on the organic passivation film, an insulating film is formed on the pixel electrode, a counter electrode having a slit is formed on the insulating film, and an alignment film is formed over the counter electrode;
• an optical orientation process is applied to the alignment film;
• a contact hole for connecting the pixel electrode over a source electrode of the TFT is formed in the organic passivation film and is provided with a lower hole having a contact portion, an upper hole larger than the lower hole and an inner wall that fastens the lower hole and the upper hole;
• and
• a diameter of the upper hole in the contact hole is larger than a diameter of the source electrode in a part corresponding to the contact hole.

A liquid crystal display device where a liquid crystal layer is held between a TFT substrate over which a pixel area and a pixel provided with a TFT are formed in a matrix and a counter substrate arranged opposite to the TFT substrate,

• wherein an inorganic passivation film is formed in the pixel area, a pixel electrode is formed on the inorganic passivation film, an insulating film is formed on the pixel electrode, a counter electrode having a slit is formed on the insulating film, and an alignment film is formed over the counter electrode;
• an optical orientation process is applied to the alignment film;
• a contact portion for connecting the pixel electrode with a source electrode of the TFT is formed in the inorganic passivation film and a stepped inclined area is provided on the upside of the contact portion;
• and
• at least a part of the inclined area functions as a transmissible area for forming an image.

A liquid crystal display device where a liquid crystal layer is held between a TFT substrate over which a pixel area and a pixel provided with a TFT are formed in a matrix and a counter substrate arranged opposite to the TFT substrate,

• wherein a counter electrode is formed in the pixel area, an insulating film and/or an inorganic passivation film are/is formed on the counter electrode, a pixel electrode having a slit is formed on the insulating film and/or the inorganic passivation film, and an alignment film is formed over the pixel electrode;
• an optical orientation process is applied to the alignment film;
• a contact portion for connecting the pixel electrode with a source electrode of the TFT is formed in the insulating film and a stepped inclined area is provided on the upside of the contact portion;
• and
• at least a part of the inclined area functions as a transmissible area for forming an image.

A liquid crystal display device where a TFT substrate on which a pixel electrode and a pixel provided with a TFT are formed in a matrix and a counter substrate arranged opposite to the TFT substrate and provided with a counter electrode are arranged and a liquid crystal layer is held between the TFT substrate and the counter substrate,

• wherein an alignment material layer is formed between the pixel electrode and the liquid crystal layer;
• in a state in which no electric field exists between the pixel electrode and the counter electrode, a liquid crystal molecule in the liquid crystal layer has the negative anisotropy of the dielectric constant and is oriented in a substantially perpendicular direction to a principal plane of the TFT substrate or a principal plane of the counter electrode, and the alignment material layer is made of photo-curing material;
• a contact hole for connecting the pixel electrode with a source electrode of the TFT is formed in an organic passivation film and is provided with a lower hole having a contact portion, an upper hole larger than the lower hole and an inner wall that fastens the lower hole and the upper hole;
• and
• at least a part of the inner wall in the contact hole functions as a transmissible area for forming an image.

A liquid crystal display device where a TFT substrate over which a pixel electrode and a pixel provided with a TFT are formed in a matrix and a counter substrate arranged opposite to the TFT substrate and provided with a counter electrode are arranged and a liquid crystal layer is held between the TFT substrate and the counter substrate,

• wherein an alignment material layer is formed between the pixel electrode and the liquid crystal layer;
• in a state in which no electric field exists between the pixel electrode and the counter electrode, a liquid crystal molecule in the liquid crystal layer has the negative anisotropy of the dielectric constant and is oriented in a substantially perpendicular direction to a principal plane of the TFT substrate or a principal plane of the opposite electrode, and the alignment material layer is made of photo-curing material;
• a contact hole for connecting the pixel electrode with a source electrode of the TFT is formed in an organic passivation film and is provided with a lower hole having a contact portion, an upper hole larger than the lower hole and an inner wall that fastens the lower hole and the upper hole;
• and
• a diameter of the upper hole in the contact hole is larger than a diameter of the source electrode in a part corresponding to the contact hole.