Electric field generating substrate and liquid crystal lens comprising the same

1. An electric field generating substrate, comprising:

a first substrate; and

a first electric field generating unit disposed on the first substrate and comprising:

a first main electrode;

a second main electrode;

a first sub-electrode disposed between the first main electrode and the second main electrode, wherein the first sub-electrode electrically connects to the first main electrode and the second main electrode, a first resistor is disposed between the first main electrode and the first sub-electrode, and a second resistor is disposed between the first sub-electrode and the second main electrode; and

a second sub-electrode disposed between the first sub-electrode and the second main electrode, wherein the second sub-electrode has a first end and a second end, the first end of the second sub-electrode electrically connects to the first sub-electrode and the second main electrode, a third resistor is disposed between the first sub-electrode and the second sub-electrode, the second resistor is disposed between the second sub-electrode and the second main electrode, and the second end of the second sub-electrode does not connect to the first main electrode, the first sub-electrode and the second main electrode;

wherein, the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode are substantially parallel to each other.

2. The electric field generating substrate according to claim 1 , further comprising a second electric field generating unit disposed on the first substrate and comprising:

a third main electrode;

a fourth main electrode; and

a third sub-electrode disposed between the third main electrode and the fourth main electrode, wherein the third sub-electrode electrically connects to the third main electrode and the fourth main electrode, a fourth resistor is disposed between the third main electrode and the third sub-electrode, and a fifth resistor is disposed between the third sub-electrode and the fourth main electrode,

wherein, the first main electrode, the second main electrode, the third main electrode, the fourth main electrode, the first sub-electrode, the second sub-electrode and the third sub-electrode are substantially parallel to each other.

3. The electric field generating substrate according to claim 1 , further comprising a second electric field generating unit disposed on the first substrate and comprising:

a third main electrode;

a fourth main electrode;

a third sub-electrode disposed between the third main electrode and the fourth main electrode, wherein the third sub-electrode electrically connects to the third main electrode, and a fourth resistor is disposed between the third main electrode and the third sub-electrode; and

a fourth sub-electrode disposed between the third sub-electrode and the fourth main electrode, wherein the fourth sub-electrode electrically connects to the third sub-electrode and the fourth main electrode, a fifth resistor is disposed between the third sub-electrode and the fourth main electrode, and a sixth resistor is disposed between the third sub-electrode and the fourth sub-electrode,

wherein, the first main electrode, the second main electrode, the third main electrode, the fourth main electrode, the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode are substantially parallel to each other.

4. The electric field generating substrate according to claim 2 , comprising a plurality of first electric field generating units and a plurality of second electric field generating units, wherein the plurality of first electric field generating units and the plurality of second electric field generating units are alternately arranged.

5. The electric field generating substrate according to claim 4 , wherein the first main electrodes of the plurality of first electric field generating units electrically connect to each other, the second main electrodes of the plurality of first electric field generating units electrically connect to each other, the third main electrodes of the plurality of second electric field generating units electrically connect to each other, and the fourth main electrodes of the plurality of second electric field generating units electrically connect to each other.

6. The electric field generating substrate according to claim 3 , comprising a plurality of first electric field generating units and a plurality of second electric field generating units, wherein the plurality of first electric field generating units and the plurality of second electric field generating units are alternately arranged.

7. The electric field generating substrate according to claim 6 , wherein the first main electrodes of the plurality of first electric field generating units electrically connect to each other, the second main electrodes of the first electric field generating units electrically connect to each other, the third main electrodes of the plurality of second electric field generating units electrically connect to each other, and the fourth main electrodes of the second electric field generating units electrically connect to each other.

8. A liquid crystal lens, comprising:

a first electric field generating substrate, comprising:

a first substrate; and

a first electric field generating unit disposed on the first substrate and comprising:

a first main electrode;

a second main electrode; and

a first sub-electrode disposed between the first main electrode and the second main electrode, wherein the first sub-electrode electrically connects to the first main electrode and the second main electrode, a first resistor is disposed between the first main electrode and the first sub-electrode, and a second resistor is disposed between the first sub-electrode and the second main electrode; and

a second sub-electrode disposed between the first sub-electrode and the second main electrode, wherein the second sub-electrode has a first end and a second end, the first end of the second sub-electrode electrically connects to the first sub-electrode and the second main electrode, a third resistor is disposed between the first sub-electrode and the second sub-electrode, the second resistor is disposed between the second sub-electrode and the second main electrode, and the second end of the second sub-electrode does not connect to the first main electrode, the first sub-electrode and the second main electrode;

wherein, the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode are substantially parallel to each other;

a second electric field generating substrate disposed opposite to the first electric field generating substrate; and

a liquid crystal layer disposed between the first electric field generating substrate and the second electric field generating substrate.

9. The liquid crystal lens according to claim 8 , wherein the second electric field generating substrate comprises: a second substrate and a planar electrode layer, wherein the planar electrode layer is disposed on a side, facing the first substrate, of the second substrate.

10. The liquid crystal lens according to claim 9 , further comprising:

a first alignment layer disposed on the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode; and

a second alignment layer disposed on the planar electrode layer, wherein an alignment direction of the first alignment layer is substantially the same as an alignment direction of the second alignment layer.

11. The liquid crystal lens according to claim 8 , wherein the first electric field generating substrate further comprises a second electric field generating unit disposed on the first substrate and comprising:

a third main electrode;

a fourth main electrode; and

a third sub-electrode disposed between the third main electrode and the fourth main electrode, wherein the third sub-electrode electrically connects to the third main electrode and the fourth main electrode, a fourth resistor is disposed between the third main electrode and the third sub-electrode, and a fifth resistor is disposed between the third sub-electrode and the fourth main electrode,

wherein, the first main electrode, the second main electrode, the third main electrode, the fourth main electrode, the first sub-electrode, the second sub-electrode and the third sub-electrode are substantially parallel to each other.

12. A liquid crystal lens, comprising:

two first electric field generating substrates, wherein the two first electric field generating substrates are disposed opposite to each other, and the two first electric field generating substrates respectively comprise:

a first substrate; and

a first electric field generating unit disposed on the first substrate and comprising:

a first main electrode;

a second main electrode; and

a first sub-electrode disposed between the first main electrode and the second main electrode, wherein the first sub-electrode electrically connects to the first main electrode and the second main electrode, a first resistor is disposed between the first main electrode and the first sub-electrode, and a second resistor is disposed between the first sub-electrode and the second main electrode; and

a second sub-electrode disposed between the first sub-electrode and the second main electrode, wherein the second sub-electrode has a first end and a second end, the first end of the second sub-electrode electrically connects to the first sub-electrode and the second main electrode, a third resistor is disposed between the first sub-electrode and the second sub-electrode, the second resistor is disposed between the second sub-electrode and the second main electrode, and the second end of the second sub-electrode does not connect to the first main electrode, the first sub-electrode and the second main electrode;

wherein, the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode are substantially parallel to each other; and

a liquid crystal layer disposed between the two first electric field generating substrates.

13. The liquid crystal lens according to claim 12 , wherein longitudinal directions of the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode of one of the two first electric field generating substrates are substantially the same as longitudinal directions of the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode of the other of the two first electric field generating substrates.

14. The liquid crystal lens according to claim 12 , further comprising:

a first alignment layer disposed on the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode of one of the two first electric field generating substrates; and

a second alignment layer disposed on the first main electrode, the second main electrode, the first sub-electrode and the second sub-electrode of the other of the two first electric field generating substrates.

15. The liquid crystal lens according to claim 14 , wherein an alignment direction of the first alignment layer is substantially the same as an alignment direction of the second alignment layer.

16. The liquid crystal lens according to claim 14 , wherein an alignment direction of the first alignment layer is substantially perpendicular to an alignment direction of the second alignment layer.

17. The liquid crystal lens according to claim 12 , wherein the two first electric field generating substrates respectively comprise a second electric field generating unit disposed on the first substrate and comprising:

a third main electrode;

a fourth main electrode; and

a third sub-electrode disposed between the third main electrode and the fourth main electrode, wherein the third sub-electrode electrically connects to the third main electrode and the fourth main electrode, a fourth resistor is disposed between the third main electrode and the third sub-electrode, and a fifth resistor is disposed between the third sub-electrode and the fourth main electrode,

wherein, the first main electrode, the second main electrode, the third main electrode, the fourth main electrode, the first sub-electrode, and the third sub-electrode are substantially parallel to each other.