METHOD FOR DRIVING A DISPLAY PANEL

• US 20080224984A1
• Filed: 05/11/2007
• Published: 09/18/2008
• Est. Priority Date: 03/12/2007
• Status: Active Grant

• Current Assignee: Orise Technology Co., Ltd (FocalTech Systems Co.,Ltd)
• Original Assignee: Orise Technology Co., Ltd (FocalTech Systems Co.,Ltd)
• Inventors: Chang, Kuei-Kai
• Granted Patent: US 7,847,780 B2
• Time in Patent Office: Days
• US Class Current: 345/100
• CPC Class Codes: G09G 2310/02 Addressing, scanning or driving the display screen or processing steps related thereto
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A method for driving a display panel is provided. The display panel includes a first scan line, and the first scan line includes sub-pixels. A first portion of the sub-pixels is controlled by a first gate line, and a second portion of the sub-pixels is controlled by a second gate line. The arrangement of the sub-pixels of the first portion and the second portion are in an interlaced arrangement. The method includes the following steps. First, drive the first gate line and then drive the second gate line in a first image duration. Then, drive the second gate line and then drive the first gate line in a second image duration.

Claims

1. A method for driving a display panel, the display panel comprising a first scan line, the first scan line comprising a plurality of sub-pixels, a first portion of the sub-pixels controlled by a first gate line, a second portion of the sub-pixels controlled by a second gate line, wherein the sub-pixels of the first portion and the sub-pixels of the second portion are in an interlaced arrangement, the method comprising the following steps:

a. during a first image duration, driving the first gate line and then driving the second gate line; and

b. during a second image duration, driving the second gate line first and then driving the first gate line.

2. The method as claimed in claim 1, wherein the polarities of the alternating current common potential of the first scan line during the first and the second image durations are the same.

3. The method as claimed in claim 1, wherein the step a further comprises:

when driving the first gate line, transmitting the frame signals corresponding to the first portion of the sub-pixels to the first portion of the sub-pixels;

when driving the second gate line, transmitting the frame signals corresponding to the second portion of the sub-pixels to the second portion of the sub-pixels.

4. The method as claimed in claim 3, wherein the step b further comprises:

when driving the second gate line, transmitting the frame signals corresponding to the second portion of the sub-pixels to the second portion of the sub-pixels;

when driving the first gate line, transmitting the frame signals corresponding to the first portion of the sub-pixels to the first portion of the sub-pixels.

5. The method as claimed in claim 1, wherein the second image duration follows the first image duration, a third image duration precedes the first image duration, and a fourth image duration follows the second duration, during the third image duration, first driving the first gate line and then driving the second gate line, during the fourth image duration, first driving the second gate line and then driving the first gate line.

6. The method as claimed in claim 5, wherein the polarities of the alternating current common potential of the first scan line during the second and the third image durations are the same, the polarities during the first and the fourth image durations being the same, the polarities during the first and the second image durations being different.

7. The method as claimed in claim 5, during the first image duration, the second image duration, the third image duration and the fourth image duration, when driving the first gate line, transmitting the frame signals corresponding to the first portion of the sub-pixels to the first portion of the sub-pixels, when driving the second gate line, transmitting the frame signals corresponding to the second portion of the sub-pixels to the second portion of the sub-pixels.

8. The method as claimed in claim 1, wherein the second image duration follows the first image duration, a third image duration precedes the first image duration, and a fourth image duration follows the second image duration, during the third image duration, first driving the second gate line then driving the first gate line, during the fourth image duration, first driving the first gate line then driving the second gate line.

9. The method as claimed in claim 8, wherein the polarities of the alternating current common potential of the first scan line during the first and the third image durations are the same, the polarities during the second and the fourth image durations being the same, the polarities during the first and the second image durations being different.

10. The method as claimed in claim 8, during the first image duration, the second image duration, the third image duration and the fourth image duration, when driving the first gate line, transmitting the frame signals corresponding to the first portion of the sub-pixels to the first portion of the sub-pixels, when driving the second gate line, transmitting the frame signals corresponding to the second portion of the sub-pixels to the second portion of the sub-pixels.

11. The method as claimed in claim 5, wherein the display panel further comprises a second scan line and the second scan line comprises a plurality of sub-pixels, the sub-pixels divided into a third portion and a fourth portion, the third portion controlled by a third gate line, the fourth portion controlled by a fourth gate line, the third and the fourth portions of the sub-pixels being in an interlaced arrangement;

during the first and the third image durations, first driving the third gate line and then driving the fourth gate line;

during the second and the fourth image durations, first driving the fourth gate line and then driving the third gate line.

12. The method as claimed in claim 11, wherein the common potential of the first scan line and the second scan line is a direct current common potential;

during the second and the third image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being a first polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being a second polarity;

during the first and the fourth image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being the second polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being the first polarity.

13. The method as claimed in claim 12, wherein the first polarity is the positive polarity and the second polarity is the negative polarity.

14. The method as claimed in claim 11, wherein the common potential of the first scan line and the second scan line is a direct current common potential;

during the first and the second image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being a first polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being a second polarity;

during the third and the fourth image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being the second polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being the first polarity.

15. The method as claimed in claim 14, wherein the first polarity is the negative polarity and the second polarity is the positive polarity.

16. The method as claimed in claim 1, wherein the second image duration follows the first image duration, a third image duration follows the second image duration, and a fourth image duration follows the third image duration;

during the third image duration, first driving the first gate line and then driving the second gate line;

during the fourth image duration, first driving the second gate line and then driving the first gate line.

17. The method as claimed in claim 16, wherein the display panel further comprises a second scan line and the second scan line comprises a plurality of sub-pixels, the sub-pixels divided into a third portion and a fourth portion, the third portion controlled by a third gate line, the fourth portion controlled by a fourth gate line, the third and the fourth portions of the sub-pixels being in an interlaced arrangement;

during the first and the third image durations, first driving the third gate line and then driving the fourth gate line;

during the second and the fourth image durations, first driving the fourth gate line and then driving the third gate line.

18. The method as claimed in claim 17, wherein the common potential of the first scan line and the second scan line is a direct current common potential;

during the first and the fourth image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being a first polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being a second polarity;

during the second and the third image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being the second polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being the first polarity.

19. The method as claimed in claim 18, wherein the first polarity is the positive polarity and the second polarity is the negative polarity.

20. The method as claimed in claim 17, wherein the common potential of the first scan line and the second scan line is a direct current common potential;

during the first and the second image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being a first polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being a second polarity;

during the third and the fourth image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being the second polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being the first polarity.

21. The method as claimed in claim 20, wherein the first polarity is the positive polarity and the second polarity is the negative polarity.

22. The method as claimed in claim 1, wherein the second image duration follows the first image duration, a third image duration follows the second image duration, and a fourth image duration follows the third image duration;

during the third image duration, first driving the second gate line and then driving the first gate line;

during the fourth image duration, first driving the first gate line and then driving the second gate line.

23. The method as claimed in claim 22, wherein the display panel further comprises a second scan line and the second scan line comprises a plurality of sub-pixels, the sub-pixels divided into a third portion and a fourth portion, the third portion controlled by a third gate line, the fourth portion controlled by a fourth gate line, the third and the fourth portions of the sub-pixels being in an interlaced arrangement;

during the first and the fourth image durations, first driving the third gate line and then driving the fourth gate line;

during the second and the third image durations, first driving the fourth gate line and then driving the third gate line.

24. The method as claimed in claim 23, wherein the common potential of the first scan line and the second scan line is a direct current common potential;

during the first and the second image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being a first polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being a second polarity;

during the third and the fourth image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being the second polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being the first polarity.

25. The method as claimed in claim 24, wherein the first polarity is the positive polarity and the second polarity is the negative polarity.

26. The method as claimed in claim 23, wherein the common potential of the first scan line and the second scan line is a direct current common potential;

during the first and the third image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being a first polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being a second polarity;

during the second and the fourth image durations, the frame signals transmitted to the first and the fourth portions of the sub-pixels being the second polarity, the frame signals transmitted to the second and the third portions of the sub-pixels being the first polarity.

27. The method as claimed in claim 26, wherein the first polarity is the positive polarity and the second polarity is the negative polarity.

28. The method as claimed in claim 1, wherein the display panel comprises a liquid crystal display (LCD) panel.

29. The method as claimed in claim 1, wherein the displayed color of each of the sub-pixels is different from the displayed colors of the adjacent sub-pixels.