Optically compensated bend liquid crystal display with controlling apertures and buffer electrodes

A liquid crystal display, comprising:

• a first substrate including wiring that intersects to define unit pixels, and a first electrode provided in each of the unit pixels;
• a second substrate opposing the first substrate and including a second electrode formed over an entire area of the second substrate, the first and second electrodes forming an electric field when a voltage is applied to the first and second electrodes;
• and
• a liquid crystal layer formed by injecting liquid crystal material between the first and second substrates, the liquid crystal material being comprised of liquid crystal molecules that are horizontally oriented in one direction and increasingly bent as approaching an imaginary center plane, wherein the center plane is parallel and equidistant to the first and second substrates, when the electric field is formed between the first and second substrates, thereby being symmetrical about the center plane,
• wherein an aperture is formed in either the first electrode or the second electrode in an area where orientation of the liquid crystal molecules begins in the unit pixels.

A liquid crystal display, comprising:

• a first substrate including wiring that intersects to define unit pixels, and a first electrode provided in each of the unit pixels;
• a second substrate opposing the first substrate and including a second electrode formed over an entire area of the second substrate, the first and second electrodes forming an electric field when a voltage is applied to the first and second electrodes, and also including a black matrix formed in the unit pixel and having an aperture;
• and
• a liquid crystal layer formed by injecting liquid crystal material between the first and second substrates, the liquid crystal material being comprised of liquid crystal molecules that are horizontally oriented in one direction and increasingly bent as approaching an imaginary center plane, wherein the center plane is parallel and equidistant to the first and second substrates, when the electric field is formed between the first and second substrates, thereby being symmetrical about the center plane,
• wherein a pretilt angle of the liquid crystal molecules in a first region of the first electrode that corresponds to the unit pixel is different from that of a second region of the first electrode that corresponds to the wiring or the black matrix.

A method for manufacturing a liquid crystal display, comprising steps of:

• producing a first substrate including wiring that intersects to define unit pixels, and a first electrode provided in each of the unit pixels;
• producing a second substrate including a second electrode formed over an entire area of the second substrate, the first and second electrodes forming an electric field when a voltage is applied to the first and second electrodes, and also including a black matrix formed in the unit pixel and having an aperture;
• performing a first orientation process in the same direction on the first and second substrates such that liquid crystal molecules of liquid crystal material to be provided between the substrates have a particular pretilt angle;
• aligning and connecting the first and second substrates such that a predetermined gap is formed therebetween;
• and
• performing a second orientation process using the black matrix as mask such that the liquid crystal molecules have a different pretilt angle in a first region corresponding to the wiring or black matrix and in a second region corresponding to the unit pixel.

A liquid crystal display, comprising:

• a first substrate including wiring that intersects to define unit pixels, and a first electrode provided in each of the unit pixels;
• a second substrate opposing the first substrate and including a second electrode formed over an entire area of the second substrate, the first and second electrodes forming an electric field with a voltage is applied to the first and second electrodes;
• a protrusion pattern in each unit pixel covering an edge of the first electrode where orientation of the liquid crystal molecules starts;
• and
• a liquid crystal layer formed by injecting liquid crystal material injected between the first and second substrates, the liquid crystal material being comprised of liquid crystal molecules that are horizontally oriented in one direction and increasingly bent as approaching an imaginary center plane, wherein the center plane is parallel and equidistant to the first and second substrates, when the electric field is formed between the first and second substrates, thereby being symmetrical about the center plane,
• wherein a pretilt angle of the liquid crystal molecules is in the range of 10-25°.