Transflective liquid crystal display device and fabricating method thereof

A transflective liquid crystal display device, comprising:

• first and second substrates facing and spaced apart from each other;
• a gate line on an inner surface of the first substrate;
• a data line crossing the gate line to define a pixel region including a reflective portion and a transmissive portion, wherein the transmissive portion has a polygonal shape inscribed in a rectangle, and a circumference of the transmissive portion is less than a circumference of the rectangle;
• a thin film transistor connected to the gate line and the data line;
• a passivation layer on the thin film transistor;
• a reflective layer corresponding to the reflective portion on the passivation layer;
• a transparent electrode corresponding to the pixel region over the reflective layer;
• a buffer layer corresponding to the reflective portion on an inner surface of the second substrate;
• a color filter layer on the buffer layer;
• a common electrode on the color filter layer;
• and
• a liquid crystal layer between the common electrode and the transparent electrode.

A transflective liquid crystal display device, comprising:

• first and second substrates facing and spaced apart from each other;
• a plurality of gate lines on an inner surface of the first substrate;
• a plurality of data lines crossing the gate lines to define pixel regions including a reflective portion and a transmissive portion, wherein a border region between the reflective and transmissive portion overlaps one of the gate lines and the data lines;
• a thin film transistor connected to the gate line and the data line;
• a passivation layer on the thin film transistor, the passivation layer having a opening corresponding to the transmissive portion;
• a reflective layer corresponding to the reflective portion on the passivation layer;
• a transparent electrode corresponding to the pixel region over the reflective layer;
• a color filter layer on an inner surface of the second substrate;
• a common electrode on the color filter layer;
• and
• a liquid crystal layer between the common electrode and the transparent electrode.

A transflective liquid crystal display device, comprising:

• first and second substrates facing and spaced apart from each other;
• a plurality of gate lines on an inner surface of the first substrate;
• a plurality of data lines crossing the gate lines to define pixel regions including a reflective portion and a transmissive portion, wherein a border region between the reflective and transmissive portion overlaps one of the gate lines and the data lines;
• a thin film transistor connected to the gate line and the data line;
• a passivation layer on the thin film transistor;
• a reflective layer corresponding to the reflective portion on the passivation layer;
• a transparent electrode corresponding to the pixel region over the reflective layer;
• a buffer layer corresponding to the reflective portion on an inner surface of the second substrate;
• a color filter layer on the buffer layer;
• a common electrode on the color filter layer;
• and
• a liquid crystal layer between the common electrode and the transparent electrode.

A method of fabricating a transflective liquid crystal display device, comprising:

• forming a gate line on an a first substrate;
• forming a data line crossing the gate line to define a pixel region including a reflective portion and a transmissive portion, wherein a border region between the reflective and transmissive portion overlaps one of the gate line and the data line;
• forming a thin film transistor connected to the gate line and the data line;
• forming a first passivation layer on the thin film transistor, the first passivation layer including an inorganic material;
• forming a second passivation layer on the first passivation layer, the second passivation layer having a opening corresponding to the transmissive portion and including an organic material;
• forming a reflective layer corresponding to the reflective portion on the second passivation layer;
• forming a third passivation layer on the reflective layer;
• forming a transparent electrode corresponding to the pixel region on the third passivation layer;
• forming a color filter layer on a second substrate;
• forming a common electrode on the color filter layer;
• attaching the first and second substrates such that the common electrode faces the transparent electrode;
• and
• forming a liquid crystal layer between the common electrode and the transparent electrode.

A fabricating method of a transflective liquid crystal display device, comprising:

• forming a gate line on a first substrate;
• forming a data line crossing the gate line to define a pixel region including a reflective portion and a transmissive portion, wherein a border region between the reflective and transmissive portion overlaps one of the gate line and the data line;
• forming a thin film transistor connected to the gate line and the data line;
• forming a first passivation layer on the thin film transistor, the first passivation layer having a opening corresponding to the transmissive portion and including an organic material;
• forming a second passivation layer on the first passivation layer;
• forming a reflective layer corresponding to the reflective portion on the second passivation layer;
• forming a third passivation layer on the reflective layer;
• forming a transparent electrode corresponding to the pixel region on the third passivation layer;
• forming a buffer layer corresponding to the reflective portion on a second substrate;
• forming a color filter layer on the buffer layer;
• forming a common electrode on the color filter layer;
• attaching the first and second substrates such that the common electrode faces the transparent electrode;
• and
• forming a liquid crystal layer between the common electrode and the transparent electrode.