Multi-domain liquid crystal display device and method for manufacturing the same

1. A method for manufacturing a multi-domain liquid crystal display device comprising:

forming gate and data lines on a first substrate in first and second directions to define a plurality of pixel regions, the data lines being formed to cross the gate lines;

forming a passivation film on the first substrate;

forming a transparent conductive film on the passivation film;

patterning the transparent conductive film to form a single pixel electrode having at least one slit in a pixel region defined by the gate and data lines, the single pixel electrode in each pixel region, wherein each pixel region has first and second sub-pixel region and each of first and second sub-pixel region has at least one slit in the single pixel electrode;

forming a common electrode on the second substrate;

forming a light shielding layer on the common electrode, the light shielding layer serving as a dielectric frame for the multi-domain and substantially surrounding each pixel region as well as the first and second sub-pixel regions;

forming a liquid crystal layer between the first and second substrates, wherein the liquid crystal layer in the first sub-pixel region aligns differently from the liquid crystal layer in the second sub-pixel region when a voltage is applied between the single pixel electrode and the common electrode; and

forming a first electrode and a second electrode on the first substrate, the first and second electrodes forming a storage capacitor,

wherein the step of forming the pixel electrode includes the step of patterning the transparent conductive film using a mask provided with at least one slit, and the single pixel electrode is connected to the second electrode of the storage capacitor via a contact hole, and

wherein the second electrode has a first width and a second width being greater than the first width, and the contact hole is positioned on a region of the second electrode having the second width.

2. The method of claim 1 , wherein the slits are formed in different directions within each domain as the plurality of domains are defined.

3. The method of claim 1 , wherein the dielectric frame is formed of black resin.

4. The method of claim 1 , wherein the dielectric frame includes photoacrylate or benzocyclobutene (BCB).

5. The method of claim 1 , wherein the step of forming the liquid crystal layer includes:

forming a sealing pattern on the first substrate;

selectively dropping a liquid crystal within the sealing pattern;

distributing a spacer on the second substrate;

attaching the first and second substrate to each other; and

hardening the sealing pattern by ultraviolet light.

6. The method of claim 1 , wherein the liquid crystal layer includes a chiral dopant.

7. A method for manufacturing a multi-domain liquid crystal display device comprising:

forming gate and data lines on a first substrate in first and second directions to define a plurality of pixel regions, the data lines being formed to cross the gate lines;

forming a passivation film on the first substrate;

forming a transparent conductive film on the passivation film;

patterning the transparent conductive film to form a single pixel electrode having at least one slit in a pixel region defined by the gate and data lines, the single pixel electrode in each pixel region, wherein each pixel region has first and second sub-pixel region and each of first and second sub-pixel region has at least one slit in the single pixel electrode;

forming a common electrode on the second substrate;

forming a light shielding layer on the common electrode, the light shielding layer serving as a dielectric frame for the multi-domain and substantially surrounding each pixel region as well as the first and second sub-pixel regions;

forming a liquid crystal layer between the first and second substrates, wherein the liquid crystal layer in the first sub-pixel region aligns differently from the liquid crystal layer in the second sub-pixel region when a voltage is applied between the single pixel electrode and the common electrode; and

forming a first electrode and a second electrode on the first substrate, the first and second electrodes forming a storage capacitor,

wherein the step of forming the pixel electrode includes patterning the transparent conductive film using a mask provided with at least one hole, and the single pixel electrode is connected to the second electrode of the storage capacitor via a contact hole, and

wherein the second electrode has a first width and a second width being greater than the first width, and the contact hole is positioned on a region of the second electrode having the second width.

8. The method of claim 7 , wherein the dielectric frame is formed of black resin.

9. The method of claim 7 , wherein the dielectric frame includes photoacrylate or benzocyclobutene (BCB).

10. The method of claim 7 , wherein the step of forming the liquid crystal layer includes:

forming a sealing pattern on the first substrate;

selectively dropping a liquid crystal within the sealing pattern;

distributing a spacer on the second substrate;

attaching the first and second substrate to each other; and

hardening the sealing pattern by ultraviolet light.

11. The method of claim 7 , wherein the liquid crystal layer includes a chiral dopant.

12. A method for manufacturing a multi-domain liquid crystal display device comprising:

forming gate and data lines on a first substrate in first and second directions to define a plurality of pixel regions, the data lines being formed to cross the gate lines;

forming a TFT at a crossing portion of the gate and data lines;

forming a single pixel electrodes having a plurality of holes or slits on an entire surface including the TFT, the single pixel electrode in each pixel region, wherein each pixel region has first and second sub-pixel region and each of first and second sub-pixel region has at least one slit in the single pixel electrode;

forming a common electrode on the second substrate;

forming a light shielding layer on the common electrode, the light shielding layer serving as a dielectric frame for the multi-domain and substantially surrounding each pixel region as well as the first and second sub-pixel regions;

forming a liquid crystal layer between the first and second substrates, wherein the liquid crystal layer in the first sub-pixel region aligns differently from the liquid crystal layer in the second sub-pixel region when a voltage is applied between the single pixel electrode and the common electrode; and

forming a first electrode and a second electrode on the first substrate, the first and second electrodes forming a storage capacitor,

wherein the step of forming the pixel electrode includes patterning the transparent conductive film using a mask provided with at least one hole or slit, and

wherein the step of forming the TFT includes:

forming a gate electrode on the first substrate;

forming a gate insulating film on the first substrate;

forming a semiconductor layer and an ohmic contact layer on the gate insulating film; and

forming a drain electrode on the ohmic contact layer and a source electrode surrounding the drain electrode in a U shape,

wherein the single pixel electrode is connected to the second electrode of the storage capacitor via a contact hole, and

wherein the second electrode has a first width and a second width being greater than the first width, and the contact hole is positioned on a region of the second electrode having the second width.

13. The method of claim 12 , wherein the dielectric frame is formed of black resin.

14. The method of claim 12 , wherein the dielectric frame includes photoacrylate or benzocyclobutene (BCB).

15. The method of claim 12 , wherein the step of forming the liquid crystal layer includes:

forming a sealing pattern on the first substrate;

selectively dropping a liquid crystal within the sealing pattern;

distributing a spacer on the second substrate;

attaching the first and second substrate to each other; and

hardening the sealing pattern by ultraviolet light.

16. The method of claim 12 , wherein the pixel electrode is electrically connected with the second electrode of the storage capacitor.

17. The method of claim 12 , wherein the first electrode is formed with the gate electrode.

18. The method of claim 12 , wherein the step of forming the TFT includes:

forming a gate electrode on the first substrate;

forming a gate insulating film on the first substrate;

forming a semiconductor layer and an ohmic contact layer on the gate insulating film;

forming a drain electrode on the ohmic contact layer and a source electrode surrounding the drain electrode in a U shape; and

wherein the second electrode is formed with the source and drain electrodes.

19. The method of claim 12 , wherein the liquid crystal layer includes a chiral dopant.