Ferroelectric liquid crystal display with a reduced light-transmittance dependency upon a visible angle

An anti-ferroelectric liquid crystal display comprising:

• a pair of first and second substrates placed substantially in parallel to each other to form a space between said first and second substrates;
• a first orientation film extending over an inner surface of said first substrate so that said first orientation film facing to said space;
• a second orientation film extending over an inner surface of said second substrate so that said second orientation film facing to said space;
• and
• an anti-ferroelectric liquid crystal provided in said space between said first and second orientation films,
• wherein said first orientation film is divided into first and second areas in each pixel so that said first area is unidirectionally oriented to have a first orientation direction and said second area is unidirectionally oriented to have a second orientation direction which differs from said first orientation direction by the right angle, and
• wherein said second orientation film is divided into third and fourth areas in each pixel, and said third area is positioned in correspondence to said first area in a plane view and said fourth area is positioned in correspondence to said second area in said plane view so that said third area is unidirectionally oriented to have a third orientation direction being parallel to said first orientation direction and said fourth area is unidirectionally oriented to have a fourth orientation direction being parallel to said second orientation direction whereby said fourth orientation direction differs from said third orientation direction by the right angle.

A ferroelectric liquid crystal display comprising:

• a pair of first and second substrates placed substantially in parallel to each other to form a space between said first and second substrates;
• a first orientation film extending over an inner surface of said first substrate so that said first orientation film facing to said space;
• a second orientation film extending over an inner surface of said second substrate so that said second orientation film facing to said space;
• and
• a ferroelectric liquid crystal provided in said space between said first and second orientation films,
• wherein said first orientation film is divided into first and second areas in each pixel so that said first area is unidirectionally oriented to have a first orientation direction and said second area is unidirectionally oriented to have a second orientation direction which differs from said first orientation direction by the right angle, and
• wherein said second orientation film is divided into third and fourth areas in each pixel, and said third area is positioned in correspondence to said first area in a plane view and said fourth area is positioned in correspondence to said second area in said plane view so that said third area is unidirectionally oriented to have a third orientation direction being parallel to said first orientation direction and said fourth area is unidirectionally oriented to have a fourth orientation direction being anti-parallel to said second orientation direction whereby said fourth orientation direction differs from said third orientation direction by the right angle.

An anti-ferroelectric liquid crystal display comprising:

• a pair of first and second substrates placed substantially in parallel to each other to form a space between said first and second substrates;
• a first orientation film extending over an inner surface of said first substrate so that said first orientation film facing to said space;
• a second orientation film extending over an inner surface of said second substrate so that said second orientation film facing to said space;
• and
• an anti-ferroelectric liquid crystal provided in said space between said first and second orientation films,
• wherein said first orientation film is divided into first and second areas in each pixel so that said first area is unidirectionally oriented to have a first orientation direction and said second area is unidirectionally oriented to have a second orientation direction which differs from said first orientation direction by the right angle, and
• wherein said second orientation film is divided into third and fourth areas in each pixel, and said third area is positioned in correspondence to said first area in a plane view and said fourth area is positioned in correspondence to said second area in said plane view so that said third area is unidirectionally oriented to have a third orientation direction being parallel to said first orientation direction and said fourth area is unidirectionally oriented to have a fourth orientation direction being anti-parallel to said second orientation direction whereby said fourth orientation direction differs from said third orientation direction by the right angle.