Reflective and transflective liquid crystal display devices and a fabricating method thereof

A transflective liquid crystal display device, comprising:

• first and second substrates spaced apart and facing each other, the second substrate having a display region and a boundary region;
• a common electrode provided on an inner surface of the first substrate;
• a gate line disposed on an inner surface of the second substrate;
• a first insulating layer disposed on the gate line;
• a data line disposed on the first insulating layer, the data line crossing the gate line and defining a pixel region with the gate line;
• a thin film transistor connected to the gate line and the data line;
• a second insulating layer disposed on the thin film transistor;
• a reflective plate disposed on the second insulating layer at the display region, the reflective plate being extended to the boundary region and having a transmission hole in the pixel region;
• a third insulating layer disposed on the reflective plate;
• a pixel electrode disposed on the third insulating layer at the pixel region, the pixel electrode being connected to the thin film transistor;
• a sealant disposed over the reflective plate at the boundary region;
• and
• a liquid crystal layer interposed between the common and pixel electrodes.

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

• forming a common electrode on a first substrate;
• forming a gate line on a second substrate having a display region and a boundary region;
• forming a first insulating layer on the gate line;
• forming a data line on the first insulating layer, the data line crossing the gate line and defining a pixel region with the gate line;
• forming a thin film transistor connected to the gate line and the data line;
• forming a second insulating layer on the thin film transistor;
• forming a reflective plate on the second insulating layer at the display region, the reflective plate being extended to the boundary region and having
• a transmission hole at the pixel region;
• forming a third insulating layer on the reflective plate;
• forming a pixel electrode on the third insulating layer at the pixel region, the pixel electrode being connected to the thin film transistor;
• forming a sealant over the reflective plate at the boundary region;
• dispensing liquid crystal molecules interiorly of the sealant;
• attaching the first and second substrates;
• and
• hardening the sealant with irradiating light.

An array substrate for a reflective liquid crystal display device, comprising:

• a substrate having a display region and a boundary region;
• a gate line disposed on the substrate;
• a first insulating layer disposed on the gate line;
• a data line disposed on the first insulating layer, the data line crossing the gate line and defining a pixel region with the gate line;
• a thin film transistor connected to the gate line and the data line;
• a second insulating layer disposed on the thin film transistor;
• a reflective plate disposed on the second insulating layer at the display region, the reflective plate being extended to the boundary region and having an open portion over the thin film transistor;
• a third insulating layer disposed on the reflective plate;
• and
• a pixel electrode disposed on the third insulating layer at the pixel region, the pixel electrode being connected to the thin film transistor through the open portion.

A reflective liquid crystal display device, comprising:

• first and second substrates spaced apart and facing each other, the second substrate having a display region and a boundary region;
• a common electrode provided on an inner surface of the first substrate;
• a gate line disposed on an inner surface of the second substrate;
• a first insulating layer disposed on the gate line;
• a data line disposed on the first insulating layer, the data line crossing the gate line and defining a pixel region with the gate line;
• a thin film transistor connected to the gate line and the data line;
• a second insulating layer disposed on the thin film transistor;
• a reflective plate disposed on the second insulating layer at the display region, the reflective plate being extended to the boundary region and having an open portion over the thin film transistor;
• a third insulating layer disposed on the reflective plate;
• a pixel electrode disposed on the third insulating layer at the pixel region, the pixel electrode being connected to the thin film transistor through the open portion;
• a sealant disposed over the reflective plate at the boundary region;
• and
• a liquid crystal layer interposed between the common and pixel electrodes.

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

• forming a common electrode on a first substrate;
• forming a gate line on a second substrate having a display region and a boundary region;
• forming a first insulating layer on the gate line;
• forming a data line on the first insulating layer, the data line crossing the gate line and defining a pixel region with the gate line;
• forming a thin film transistor connected to the gate line and the data line;
• forming a second insulating layer on the thin film transistor;
• forming a reflective plate on the second insulating layer at the display region, the reflective plate being extended to the boundary region and having an open portion over the thin film transistor;
• forming a third insulating layer on the reflective plate;
• forming a pixel electrode on the third insulating layer at the pixel region, the pixel electrode being connected to the thin film transistor through the open portion;
• forming a sealant over the reflective plate at the boundary region;
• dispensing liquid crystal molecules interiorly of the sealant;
• attaching the first and second substrates;
• and
• hardening the sealant with irradiating light.