IP Library › Granted Patent US 7,551,157
Granted Patent B2
US 7,551,157 · App. 11/360,692 · Granted Jun 23, 2009

Display device and driving method thereof

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Quick Facts
Patent No.
US 7,551,157
App. No.
11/360,692
Granted
Jun 23, 2009
Kind
B2
Abstract

A display device includes a plurality of gate lines, at least one data line, and a plurality of pixels connected to the plurality of gate lines and the at least one data line. The display device is configured to perform a first step of sequentially selecting N lines of the plurality of gate lines, and sequentially outputting N times display signals to the data line, and to perform a second step of selecting Z lines of the plurality of gate lines at one time, and outputting one time a blanking signal, where N and Z are natural numbers at least equal to 2. The Z lines are separate from the N lines, and the first step and the second step are repeatedly performed.

Claims (33)

1. A display device comprising:

a plurality of gate lines;

at least one a data line; and

a plurality of pixels connected to the plurality of gate lines and the at least one data line;

wherein the display device is configured to enable a first step of sequentially selecting N lines of the plurality of gate lines, and sequentially outputting N times display signals to the at least one data line, where N is a natural number of at least 2;

wherein the display device is configured to enable a second step of selecting Z lines of the plurality of gate lines at one time, and outputting one time a blanking signal, where Z is a natural number of at least 2;

wherein the Z lines are separate from the N lines, and the first step and second step are repeated; and

wherein a display signal polarity of the blanking signal is different from a display signal polarity of a first outputted display signal of the beginning time of the N times of the next first step.

2. A display device according to claim 1 , wherein the number N and the number Z are the same.

3. A display device according to claim 2 , wherein the number N and the number Z are set to 4.

4. A display device according to claim 1 , wherein the number N is set to 4.

5. A display device according to claim 1 , wherein the display signal polarity of the blanking signal of the second step is the same as a display signal polarity of a last display signal of the N times of previous first step.

6. A display device according to claim 5 , wherein the number N and the number Z are same.

7. A display device according to claim 6 , wherein the number N and the number Z are set to 4.

8. A display device according to claim 5 , wherein the Number N is set to 4.

9. A display device according to claim 1 , wherein a gate line selected at a last time and receiving a last display signal of the N times in a first frame is different from a pixel receiving a last display signal of the N times in a second frame.

10. A display device comprising:

a plurality of gate lines;

at least one a data line; and

a plurality of pixels connected to the plurality of gate lines and the at least one data line;

wherein the display device is configured to enable a first step of sequentially selecting N lines of the plurality of gate lines, and sequentially outputting N times display signals to the at least one data line, where N is a natural number of at least 2;

wherein the display device is configured to enable a second step of selecting Z lines of the plurality of gate lines at one time, and outputting one time a blanking signal, where Z is a natural number of at least 2;

wherein the display device comprises a normally black display portion;

wherein the Z lines are separate from the N lines, and the first step and second step are repeated; and

wherein a display signal polarity of the blanking signal is different from a display signal polarity of a first outputted display signal of the beginning time of the N times of the next first step.

11. A display device according to claim 10 , wherein the number N and the number Z are the same.

12. A display device according to claim 11 , wherein the number N and the number Z are set to 4.

13. A display device according to claim 10 , wherein the number N is set to 4.

14. A display device according to claim 10 , wherein the display signal polarity of the blanking signal of the second step is the same as a display signal polarity of a last display signal of the N times of previous first step.

15. A display device according to claim 14 , wherein the number N and the number Z are same.

16. A display device according to claim 15 , wherein the number N and the number Z are set to 4.

17. A display device according to claim 14 , wherein the Number N is set to 4.

18. A display device according to claim 10 , wherein a gate line selected at a last time and receiving a last display signal of the N times in a first frame is different from a pixel receiving a last display signal of the N times in a second frame.