PIXEL STRUCTURE AND LIQUID CRYSTAL DISPLAY PANEL

Abstract

A pixel structure of an active device array substrate is provided. The pixel structure includes a scan line and a data line; an active device electrically coupled to the scan line and the data line; a pixel electrode electrically coupled to the active device, wherein the pixel electrode has at least one opening therein; and at least one island electrode disposed inside the opening, wherein the island electrode is electrically coupled to a voltage V, and the pixel electrode is electrically coupled to a driving voltage Vd that is different from the voltage V, such that a transverse electric field is formed between the island electrode and the pixel electrode.

Description

BRIEF DESCRIPTION DRAWINGS

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a portion of this specification. The drawings illustrate embodiments of the invention, and together with the description, serve to explain the principles of the invention.

FIG. 1A is a schematic view of the liquid crystal molecules with the splay state in the liquid crystal display panel.

FIG. 1B is a schematic view of the liquid crystal molecules with the bend state in the liquid crystal display panel.

FIG. 2A is a cross-sectional view of a liquid crystal display panel according to the first embodiment of the present invention.

FIG. 2B is a top view of the active device array substrate in the liquid crystal display panel of FIG. 2A.

FIGS. 2C to 2G show the top views of the pixel structure of the active device array substrate according to the embodiments of the present invention, respectively.

FIG. 3A is a top view of a pixel structure of the active device array substrate according to an embodiment of the present invention, and FIG. 3B is a top view of a pixel structure of the color filtering array substrate according to an embodiment of the present invention.

FIGS. 4 to 10 show the top views of the pixel structure of the color filtering array substrate according to the embodiments of the present invention, respectively.

FIG. 11A is a top view of a pixel structure of the active device array substrate according to another embodiment of the present invention, and FIG. 11B is a top view of a pixel structure of the color filtering array substrate according to another embodiment of the present invention.

FIG. 12 is a cross-sectional view of a liquid crystal display panel.

Claims

1. A pixel structure of an active device array substrate, comprising: a scan line and a data line;an active device electrically coupled to the scan line and the data line;a pixel electrode electrically coupled to the active device, wherein the pixel electrode has at least one opening; andat least one island electrode disposed inside the opening, wherein the island electrode is electrically coupled to a voltage V, and the pixel electrode is electrically coupled to a driving voltage Vd, wherein the voltage V is different from the driving voltage Vd, and thus a transverse electric field is formed between the island electrode and the pixel electrode.

2. The pixel structure of the active device array substrate of claim 1, further comprising a capacitance electrode disposed between the substrate and the pixel electrode, wherein the capacitance electrode is electrically coupled to the island electrode.

3. The pixel structure of the active device array substrate of claim 2, wherein the capacitance electrode comprises a common line.

4. The pixel structure of the active device array substrate of claim 2, wherein the capacitance electrode comprises a next scan line adjacent to the scan line.

5. The pixel structure of the active device array substrate of claim 1, further comprising an alignment layer disposed over the pixel electrode and the island electrode, wherein the alignment layer has an alignment direction that is different from the direction of the transverse electric field.

6. The pixel structure of the active device array substrate of claim 1, wherein the pixel electrode is made of a material substantially the same as that for the island electrode.

7. A pixel structure of a color filtering array substrate, comprising: a color filtering layer;a black matrix layer surrounding the color filtering layer; andan electrode layer covering the color filtering layer and the black matrix layer, wherein the electrode layer has at least one opening, and the opening is correspondingly located above the black matrix layer.

8. The pixel structure of the color filtering array substrate of claim 8, further comprising at least one island electrode disposed inside the opening, wherein the island electrode is electrically insulated from the electrode layer.

9. The pixel structure of the color filtering array substrate of claim 8, wherein the electrode layer is electrically coupled to a common voltage Vc, the island electrode is electrically coupled to a voltage V, and the common voltage Vc is different from the voltage V.

10. The pixel structure of the color filtering array substrate of claim 8, wherein the electrode layer is made of a material substantially the same as that for the island electrode.

11. The pixel structure of the color filtering array substrate of claim 8, wherein the opening is further formed in the electrode layer above the color filtering layer, and the island electrode is disposed inside the opening.

12. The pixel structure of the color filtering array substrate of claim 7, wherein the opening is formed in the electrode layer above the color filtering layer.

13. A liquid crystal display panel, comprising: an active device array substrate comprising a plurality of pixel structures, wherein each pixel structure comprises a scan line, a data line, an active device electrically coupled to the scan line and the data line, and a pixel electrode electrically coupled to the active device;a color filtering array substrate comprising a color filtering layer, a black matrix layer surrounding the periphery of the color filtering layer, and an electrode layer covering the color filtering layer and the black matrix layer, wherein the electrode layer has at least one first opening, and the first opening is correspondingly located above the black matrix layer; anda liquid crystal layer disposed between the active device array substrate and the color filtering array substrate.

14. The liquid crystal display panel of claim 13, further comprising at least one first island electrode disposed inside the first opening, wherein the first island electrode is electrically insulated from the electrode layer.

15. The liquid crystal display panel of claim 13, wherein each pixel structure of the active device array substrate further comprises a capacitance electrode, and the first opening located on the color filtering array substrate is aligned with the capacitance electrode.

16. The liquid crystal display panel of claim 15, further comprising at least one first island electrode disposed inside the first opening, wherein the first island electrode disposed in the first opening is aligned with the capacitance electrode.

17. The liquid crystal display panel of claim 13, wherein the pixel electrode has at least one second opening in which a second island electrode is disposed, and a transverse electric field is formed between the second island electrode and the pixel electrode.

18. The liquid crystal display panel of claim 17, wherein each pixel structure of the active device array substrate further comprises a capacitance electrode, wherein the capacitance electrode is electrically coupled to the second island electrode.