Liquid crystal display device

A liquid crystal display device comprising:

• electrodes that are formed on at least one of a pair of substrates, and are used for applying voltage onto liquid crystal molecules;
• a liquid crystal layer formed by sandwiching a liquid crystal composition comprising a liquid crystal and a photopolymerizable compound between the substrates, followed by ultraviolet ray irradiation;
• a first alignment control layer that is formed on at least one of the substrates between the electrodes and the liquid crystal layer, and makes the liquid crystal molecules align vertically;
• a second alignment control layer composed of a UV-cured product formed by the ultraviolet ray irradiation that is formed directly on, and completely covers., the first alignment control layer, such that the second alignment control layer is located between the first alignment control layer and the liquid crystal layer, thereby separating the first alignment control layer from the liquid crystal layer, wherein not less than two domains having different threshold voltages are present in a pixel, and at least one of the domains has a threshold voltage higher than the threshold voltage would be without the second alignment control layer;
• and
• wherein the mutual border between said domains is installed on protrusions formed on a substrate or slits in an electrode.

A liquid crystal display device comprising:

• electrodes that are formed on at least one of a pair of substrates, and are used for applying voltage onto liquid crystal molecules;
• a liquid crystal layer formed by sandwiching a liquid crystal composition comprising a liquid crystal and a photopolymerizable compound between the substrates, followed by ultraviolet ray irradiation;
• and
• a first alignment control layer associated with each of the substrates, such that one of said first alignment control layers is formed between each substrate and the liquid crystal layer, whereby each first alignment control layer makes the liquid crystal molecules align vertically;
• a second alignment control layer formed on, and to completely cover, each of the first alignment control layers, thereby separating the first alignment control layers from the liquid crystal layer, said second alignment control layers being composed of a UV-cured product formed by ultraviolet ray irradiation that is formed so that not less than two domains having different threshold voltages are present in a pixel, and at least one of the domains has a threshold voltage higher than the threshold voltage would be without the second alignment control layer,
• wherein the mutual border between said domains is approximately in parallel with the tilting direction of the liquid crystal molecules.

A liquid crystal display device comprising:

• electrodes that are formed on at least one of a pair of substrates, and are used for applying voltage onto liquid crystal molecules;
• a liquid crystal layer formed by sandwiching a liquid crystal composition comprising a liquid crystal and a photopolymerizable compound between the substrates, followed by ultraviolet ray irradiation;
• and
• a first alignment control layer associated with each of the substrates, such that one of said first alignment control layers is formed between each substrate and the liquid crystal layer, whereby each first alignment control layer makes the liquid crystal molecules align vertically;
• a second alignment control layer formed on each of the first alignment control layers, said second alignment control layers being composed of a UV-cured product formed by ultraviolet ray irradiation that is formed so that not less than two domains having different threshold voltages are present in a pixel, and at least one of the domains has a threshold voltage higher than the threshold voltage would be without the second alignment control layer,
• wherein the mutual border between said domains is approximately in parallel with the tilting direction of the liquid crystal molecules, and
• wherein the second alignment control layers are separated from each other by the liquid crystal layer.