Scan method for displaying image

• US 8,896,584 B2
• Filed: 05/29/2012
• Issued: 11/25/2014
• Est. Priority Date: 07/14/2011
• Status: Active Grant

• Current Assignee: Novatek Microelectronics Corporation (Novatek Microelectronics Corp Limited)
• Original Assignee: Novatek Microelectronics Corporation (Novatek Microelectronics Corp Limited)
• Inventors: Liu, Shang-I
• Primary Examiner(s): Sasinowski, Andrew
• Application Number:
  US13/482,970
• Publication Number:
  US 20130016076A1
• Time in Patent Office: 910 Days
• Field of Search: 345/96, 345/204, 345/209, 345/214
• US Class Current: 345/209
• CPC Class Codes: G09G 2310/0213 controlling the sequence of the scanning lines with respect to the patterns to be displayed, e.g. to save power
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A scan method for displaying image, wherein a display panel has N gate lines to display an image, and N≧4. The image is displayed by dot inversion or line inversion. The method includes displaying a first image frame by a first scan sequence. The first frame has multiple first scan-line groups in relative darkness and multiple second scan-line groups in relative brightness, which are alternately displayed. Just after the second frame, a second scan sequence displays a second frame. The second frame has multiple first scan-line groups in relative darkness and multiple second scan-line groups in relative brightness, which are alternately displayed. The first and second scan-line groups of the first frame are complementary to the first and second scan-line groups of the second frame. The first scan-line groups of the first frame and second frame are relatively dark due to the pixels therein with insufficient charge.

Claims

1. A scan method for displaying image, wherein a display panel has N gate lines to display an image, N≧

4, and the image is displayed by dot inversion or line inversion, the scan method comprising;

displaying a first image frame by a first scan sequence, wherein the first image frame has a plurality of first gate-line groups in relative darkness and a plurality of second gate-line groups in relative brightness, and the first gate-line groups and the second gate-line groups are alternately displayed;

just after the first image frame, displaying a second image frame by a second scan sequence, wherein the second image frame has a plurality of first gate-line groups in relative darkness and a plurality of second gate-line groups in relative brightness, and the first gate-line groups and the second gate-line groups are alternately displayed, wherein the first and second gate-line groups of the first image frame are complementary to the first and second gate-line groups of the second image frame; and

cycling the first scan sequence and the second scan sequence,

wherein the first gate-line groups of the first image frame and the second image frame are relatively dark due to a plurality of pixels therein with insufficient charge.

2. The scan method for displaying image as claimed in claim 1, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 3, 2, 4, and 3, 1, 4, 2;

or 3, 1, 4, 2, and 1, 3, 2, 4.

3. The scan method for displaying image as claimed in claim 1, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 3, 2, 4, and 4, 2, 3, 1;

or 4, 2, 3, 1, and 1, 3, 2, 4.

4. The scan method for displaying image as claimed in claim 1, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, the image is in a two-line inversion or a two-dot display mode, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 2, 3, 4, and 2, 1, 4, 3;

or 2, 1, 4, 3, and 1, 2, 3, 4.

5. The scan method for displaying image as claimed in claim 1, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, the image is in the two-line inversion or the two-dot display mode, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 2, 3, 4, and 4, 3, 2, 1;

or 4, 3, 2, 1, and 1, 2, 3, 4.

6. A scan method for displaying image, wherein a display panel has N gate lines to display an image, N≧

4, and the image is displayed by dot inversion or line inversion, the scan method comprising;

displaying a first image frame group by a first scan sequence, the first image frame group having a plurality of first image frames, each of the first image frames having a plurality of first gate-line groups in relative darkness and a plurality of second gate-line groups in relative brightness, and the first gate-line groups and the second gate-line groups are alternately displayed;

just after the first image frame group, displaying a second image frame group by a second scan sequence, the second image frame group having a plurality of second image frames, each of the second image frames having a plurality of third gate-line groups in relative darkness and a plurality of fourth gate-line groups in relative brightness, and the third gate-line groups and the fourth gate-line groups are alternately displayed,

wherein the first and second gate-line groups of the first image frames are complementary to the third and fourth gate-line groups of the second image frames,

wherein a quantity of the second image frames of the second image frame group is equal to a quantity of the first image frames of the first image frame group; and

cycling the first scan sequence and the second scan sequence,

wherein the first gate-line groups and the third gate-line groups of the first image frames and the second image frames are relatively dark due to a plurality of pixels therein with insufficient charge.

7. The scan method for displaying image as claimed in claim 6, wherein a pixel polarity between two image frames of the plurality of first image frames is the same, and a pixel polarity between two image frames of the plurality of second image frames is the same.

8. The scan method for displaying image as claimed in claim 7, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 3, 2, 4, and 3, 1, 4, 2;

or 3, 1, 4, 2, and 1, 3, 2, 4.

9. The scan method for displaying image as claimed in claim 7, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 3, 2, 4, and 4, 2, 3, 1;

or 4, 2, 3, 1, and 1, 3, 2, 4.

10. The scan method for displaying image as claimed in claim 7, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, the image is in a two-line inversion or a two-dot display mode, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 2, 3, 4, and 2, 1, 4, 3;

or 2, 1, 4, 3, and 1, 2, 3, 4.

11. The scan method for displaying image as claimed in claim 7, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, the image is in the two-line inversion or the two-dot display mode, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 2, 3, 4, and 4, 3, 2, 1;

or 4, 3, 2, 1, and 1, 2, 3, 4.

12. The scan method for displaying image as claimed in claim 6, wherein the pixel polarity between two image frames of the plurality of first image frames is inverted, and the pixel polarity between two image frames of the plurality of second image frames is inverted.

13. The scan method for displaying image as claimed in claim 12, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 3, 2, 4, and 3, 1, 4, 2;

or 3, 1, 4, 2, and 1, 3, 2, 4.

14. The scan method for displaying image as claimed in claim 12, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 3, 2, 4, and 4, 2, 3, 1;

or 4, 2, 3, 1, and 1, 3, 2, 4.

15. The scan method for displaying image as claimed in claim 12, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, the image is in a two-line inversion or a two-dot display mode, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 2, 3, 4, and 2, 1, 4, 3;

or 2, 1, 4, 3, and 1, 2, 3, 4.

16. The scan method for displaying image as claimed in claim 12, wherein the order numbers of four consecutive gate lines are defined by 1, 2, 3, and 4, the image is in the two-line inversion or the two-dot display mode, and a turn-on sequence of one of the first scan sequence and the second scan sequence is respectively 1, 2, 3, 4, and 4, 3, 2, 1;

or 4, 3, 2, 1, and 1, 2, 3, 4.

17. The scan method for displaying image as claimed in claim 6, wherein the quantity of the second image frames of the second image frame group and the quantity of the first image frames of the first image frame group are both equal to 2, so as to enable image display by cycling four image frames.