Driving method and device for a display

1. A driving device for a display for driving a pixel matrix containing N×M pixel units, comprising:

a first vertical driver generating N first vertical driving signals in sequence each having a function period of T, each of said N first vertical driving signals being used to drive the first through the K-th pixel units on each row of said pixel matrix;

a second vertical driver generating N second vertical driving signals in sequence each having a function period of T, each of said N second vertical driving signals being used to drive the (K+1)-th through the M-th pixel units on each row of said pixel matrix, wherein the M-th pixel unit is located at a right side of said pixel matrix; and

a horizontal driver having M data lines providing data signals to said M pixel units on each row of said pixel matrix, respectively,

wherein each of said second vertical driving signal has a start time ranged between that of a corresponding first vertical driving signal and (K/M)T, but said start time of said second vertical driving signal is not simultaneous to that of said corresponding first vertical driving signal,

whereby said first and second vertical drivers extend a time period for charging said pixel units with said data lines from said horizontal driver to thereby avoiding mura effect at the right side of said pixel matrix otherwise caused by said horizontal driver under a low temperature condition.

2. The driving device according to claim 1 , wherein said N first vertical driving signals are sequentially connected to each other.

3. The driving device according to claim 2 , wherein said N second vertical driving signals are sequentially connected to each other.

4. The driving device according to claim 1 , wherein M is 2K, and the function period of each of said second vertical driving signals begins at half of said function period of a corresponding first vertical driving signal.

5. The driving device according to claim 1 , wherein said M data lines of said horizontal driver transmit M data signals to M pixel units on each row of said pixel matrix corresponding to each of said first vertical driving signals within the function period thereof.

6. A driving method for a display for driving a pixel matrix containing N×M pixel units, comprising the steps of:

sequentially providing N first vertical driving signals, each having a function period of T, to the first through the K-th pixel units on each of N rows of said pixel matrix;

sequentially providing N second vertical driving signals, each having a function period of T, to the (K+1)-th through the M-th pixel units on each of N rows of said pixel matrix, wherein the M-th pixel unit is located at a right side of said pixel matrix; and

providing M data signals to M pixel units on each row of said pixel matrix, respectively,

wherein each of said second vertical driving signal has a start time ranged between that of a corresponding first vertical driving signal and (K/M)T, but said start time of said second vertical driving signal is not simultaneous to that of said corresponding first vertical driving signal,

whereby said first and second vertical driving signals extend a time period for charging said pixel units with said data signals to thereby avoiding mura effect at the right side of said pixel matrix otherwise caused by data signals provided under a low temperature condition.

7. The driving method according to claim 6 , wherein said N first vertical driving signals are sequentially closely connected to each other.

8. The driving method according to claim 7 , wherein said N second vertical driving signals are sequentially closely connected to each other.

9. The driving method according to claim 6 , wherein M is 2K, and said function period of each of said second vertical driving signals begins at half of said function period of a corresponding first vertical driving signal.

10. The driving method according to claim 6 , wherein M data signals are provided to M pixel units on each row of said pixel matrix corresponding to each of said first vertical driving signals within the function period thereof.

11. An image display system, comprising:

a pixel matrix containing N×M pixel units; and

a driving device for a display for driving said pixel matrix, said driving device for a display comprising:

a first vertical driver generating N first vertical driving signals, each having a function period of T, each of said N first vertical driving signals being used to drive the first through the K-th pixel units on each row of said pixel matrix;

a second vertical driver generating N second vertical driving signals, each having a function period of T, each of said N second vertical driving signals being used to drive the (K+1)-th through the M-th pixel units on each row of said pixel matrix, wherein the M-th pixel unit is located at a right side of said pixel matrix; and

a horizontal driver having M data lines providing data signals to said M pixel units on each row of said pixel matrix, respectively,

wherein each of said second vertical driving signal has a start time ranged between that of a corresponding first vertical driving signal and (K/M)T, but said start time of said second vertical driving signal is not simultaneous to that of said corresponding first vertical driving signal,

whereby said first and second vertical drivers extend a time period for charging said pixel units with said data lines from said horizontal driver to thereby avoiding mura effect at the right side of said pixel matrix otherwise caused by said horizontal driver under a low temperature condition.

12. The image display system according to claim 11 , wherein said image display system is one selected from a group consisting of a mobile phone, a digital camera, a personal digital assistant (PDA), a laptop computer, a desktop computer, a television, an automotive display, an aerial display, a global positioning system (GPS) and a portable digital versatile disc (DVD) player.