Transflective type liquid crystal display panel and method of fabricating the same

1. A transflective type liquid crystal display panel comprising:

a gate line on a substrate;

a data line crossing the gate line to define a pixel region comprised of a transmitting part and a reflective part;

a thin film transistor adjacent to a crossing of the gate and data lines;

a first insulation film on a passivation film covering the thin film transistor;

a reflective electrode in the reflective part of the pixel region, for reflecting incident light;

a pixel electrode formed on a second insulation film covering the reflective electrode, and connected to a drain electrode of the thin film transistor via a contact hole; and

a coupling capacitor for matching a reflective curve of the reflective part with a transmitting curve of the transmitting part by normalizing the reflective curve of reflective part according to a data voltage supplied from the drain electrode.

2. The transflective type liquid crystal display panel of claim 1 , wherein the first insulation film is formed of an organic insulation material of photo-acryl.

3. The transflective type liquid crystal display panel of claim 1 , wherein the second insulation film is formed of an inorganic insulation material.

4. The transflective type liquid crystal display panel of claim 1 , wherein the coupling capacitor comprises:

a first coupling capacitor including the reflective electrode, and the drain electrode overlapping with the reflective electrode in state of interposing the first insulation film therebetween; and

a second coupling capacitor including the pixel electrode, and the reflective electrode overlapping with the pixel electrode in state of interposing the second insulation film therebetween.

5. The transflective type liquid crystal display panel of claim 4 , wherein the first and second coupling capacitors are connected in parallel.

6. The transflective type liquid crystal display panel of claim 5 , wherein electric capacity of the second coupling capacitor is varied based on an area of the pixel electrode formed in the reflective part.

7. A method of fabricating a transflective type liquid crystal display panel, comprising:

forming a gate line on a substrate;

forming a data line crossing the gate line to define a pixel region comprised of a transmitting part and a reflective part;

forming a thin film transistor adjacent to a crossing of the gate and data lines;

forming a first insulation film on a passivation film covering the thin film transistor;

forming a reflective electrode in the reflective part of the pixel region, for reflecting incident light;

forming a pixel electrode connected to a drain electrode of the thin film transistor via a contact hole included in the second insulation film covering the reflective electrode; and

forming a coupling capacitor to normalize a reflective curve of the reflective part according to a data voltage supplied from the drain electrode, to be matched up with a transmitting curve of the transmitting part.

8. The method of claim 7 , wherein the first insulation film is formed of an organic insulation material of photo-acryl.

9. The method of claim 7 , wherein the second insulation film is formed of an inorganic insulation material.

10. The method of claim 1 , wherein forming the coupling capacitor comprises:

forming a first coupling capacitor including the reflective electrode, and the drain electrode overlapping with the reflective electrode in state of interposing the first insulation film therebetween; and

forming a second coupling capacitor including the pixel electrode, and the reflective electrode overlapping with the pixel electrode in state of interposing the second insulation film therebetween.

11. The method of claim 10 , wherein the first and second coupling capacitors are connected in parallel.

12. The method of claim 11 , wherein electric capacity of the second coupling capacitor is varied based on an area of the pixel electrode formed in the reflective part.