Liquid crystal display
View Patent ↗A liquid crystal display includes: first and second substrates; a liquid crystal layer; first and second gate lines; a data line and a voltage supplying line disposed on the first substrate; and a pixel. The pixel includes a first switching element connected to the first gate line and the data line, a second switching element connected to the first gate line and the voltage supplying line, a third switching element connected to the second gate line, a first pixel electrode connected to the first switching element, and a separate second pixel electrode connected to the second switching element. The voltage supplying line is supplied with a first voltage, which has a substantially uniform magnitude.
1. A liquid crystal display comprising:
a first substrate;
a second substrate disposed opposite the first substrate;
a liquid crystal layer interposed between the first substrate and the second substrate and including liquid crystal molecules;
a first gate line disposed on the first substrate;
a second gate line disposed on the first substrate;
a data line disposed on the first substrate;
a voltage supplying line disposed on the first substrate; and
a pixel comprising:
a first pixel electrode and a second pixel electrode;
a first switching element including a control terminal connected to the first gate line, an input terminal connected to the data line, and a output terminal connected to the first pixel electrode;
a second switching element including a control terminal connected to the first gate line, an input terminal connected to the voltage supplying line, and a output terminal connected to the second pixel electrode;
a third switching element including a control terminal connected to the second gate line, an input terminal connected to the output terminal of the first switching element, a output terminal connected to the output terminal of the second switching element;
a first sharing capacitor including the first pixel electrode and an output terminal of the second switching element as terminals thereof; and
a second sharing capacitor including the second pixel electrode and an output terminal of the first switching element as terminals thereof;
wherein the voltage supplying line is supplied with a first voltage having a substantially uniform magnitude,
wherein the liquid crystal molecules are arranged substantially parallel to surfaces of the first substrate and the second substrate when an electric field is not applied to the liquid crystal layer, and
wherein, when the first gate line is supplied with a gate-on signal,
the first sharing capacitor is charged with a first charge by the first voltage,
the second sharing capacitor is charged with a second charge by a first data voltage through the data line, and
an amount of the second charge is greater than an amount of the first charge.
2. The liquid crystal display of claim 1 , wherein
the input terminal of the third switching element is connected to the output terminal of the first switching element of the terminals of the second sharing capacitor, and
an output terminal of the third switching element is connected to the output terminal of the second switching element of the terminals of the first sharing capacitor.
3. The liquid crystal display of claim 2 , wherein, when the first gate line is supplied with the gate-on signal,
the first pixel electrode is supplied with the first data voltage through the data line,
the second pixel electrode is applied with the first voltage through the voltage supplying line, and
an absolute value of the first data voltage is greater than an absolute value of the first voltage.
4. The liquid crystal display of claim 1 , wherein, when the second gate line is supplied with the gate-on signal,
the second charge charged to the second sharing capacitor is transferred to the first sharing capacitor by the third switching element.
5. The liquid crystal display of claim 4 , wherein, when the second gate line is supplied with the gate-on signal,
the first pixel electrode and the second pixel electrode are electrically floated.
6. The liquid crystal display of claim 5 , wherein
the second charge charged to the second sharing capacitor is transferred to the first sharing capacitor by the third switching element such that
the voltage of the first pixel electrode increases, and
the voltage of the pixel electrode decreases.
7. The liquid crystal display of claim 6 , wherein
the voltage of the first pixel electrode is greater than the first voltage, and
the voltage of the second pixel electrode is less than the first voltage.
8. The liquid crystal display of claim 7 , further comprising
a common electrode disposed on the second substrate.
9. The liquid crystal display of claim 8 , wherein the liquid crystal molecules have negative dielectric anisotropy.
10. The liquid crystal display of claim 9 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
11. The liquid crystal display of claim 1 , wherein the liquid crystal molecules have negative dielectric anisotropy.
12. The liquid crystal display of claim 11 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
13. The liquid crystal display of claim 1 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
14. The liquid crystal display of claim 7 , wherein the liquid crystal molecules have negative dielectric anisotropy.
15. The liquid crystal display of claim 14 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
16. The liquid crystal display of claim 7 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
17. The liquid crystal display of claim 7 , wherein
the liquid crystal molecules have positive dielectric anisotropy.
18. The liquid crystal display of claim 17 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
19. The liquid crystal display of claim 1 , wherein, when the second gate line is supplied with the gate-on signal,
the first pixel electrode and the second pixel electrode are electrically floated.
20. The liquid crystal display of claim 19 , wherein
the second charge charged to the second sharing capacitor is transferred to the first sharing capacitor by the third switching element such that a voltage of the first pixel electrode increases and a voltage of the pixel electrode decreases.
21. The liquid crystal display of claim 20 , wherein
the voltage of the first pixel electrode is greater than the first voltage, and
the voltage of the second pixel electrode is less than the first voltage.
22. The liquid crystal display of claim 21 , further comprising a common electrode disposed on the second substrate.
23. The liquid crystal display of claim 22 , wherein
the liquid crystal molecules have negative dielectric anisotropy.
24. The liquid crystal display of claim 23 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
25. The liquid crystal display of claim 22 , wherein the liquid crystal molecules have negative dielectric anisotropy.
26. The liquid crystal display of claim 25 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
27. The liquid crystal display of claim 22 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
28. The liquid crystal display of claim 21 , wherein
the liquid crystal molecules have negative dielectric anisotropy.
29. The liquid crystal display of claim 28 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
30. The liquid crystal display of claim 21 , wherein the liquid crystal molecules have negative dielectric anisotropy.
31. The liquid crystal display of claim 30 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
32. The liquid crystal display of claim 21 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
33. The liquid crystal display of claim 21 , wherein
the liquid crystal molecules have positive dielectric anisotropy.
34. The liquid crystal display of claim 33 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
35. The liquid crystal display of claim 1 , wherein, when the second gate line is supplied with the gate-on signal,
the second charge charged to the second sharing capacitor is transferred to the first sharing capacitor by the third switching element.
36. The liquid crystal display of claim 35 , wherein, when the second gate line is applied with the gate-on signal, the first pixel electrode and the second pixel electrode are electrically floated.
37. The liquid crystal display of claim 36 , wherein
the second charge charged to the second sharing capacitor is transferred to the first sharing capacitor by the third switching element such that a voltage of the first pixel electrode increases, and a voltage of the second pixel electrode decreases.
38. The liquid crystal display of claim 37 , wherein
the voltage of the first pixel electrode is greater than the first voltage, and
the voltage of the second pixel electrode is less than the first voltage.
39. The liquid crystal display of claim 1 , further comprising a common electrode disposed on the second substrate.
40. The liquid crystal display of claim 39 , wherein the liquid crystal molecules have negative dielectric anisotropy.
41. The liquid crystal display of claim 40 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
42. The liquid crystal display of claim 39 , wherein the liquid crystal molecules have negative dielectric anisotropy.
43. The liquid crystal display of claim 42 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.
44. The liquid crystal display of claim 39 , wherein
the first pixel electrode and the second pixel electrode include branch electrodes, and
the branch electrodes of the first pixel electrode and the branch electrodes of the second pixel electrode are alternately disposed on the first substrate.