DISPLAY APPARATUS AND OPERATION METHOD THEREOF

• US 20130314389A1
• Filed: 07/24/2012
• Published: 11/28/2013
• Est. Priority Date: 05/22/2012
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: SIAO, Kai-Yuan, WANG, Yi-Hao
• Granted Patent: US 8,767,024 B2
• Time in Patent Office: Days
• US Class Current: 345/211
• CPC Class Codes: G09G 2310/0218 with collection of electrodes in groups for n-dimensional addressing
• 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 display apparatus with a display panel is provided. The display panel is initially driven to have the data voltages on any two consecutive data lines thereon with different polarities. If a to-be-displayed image contains a predetermined pattern constituted by pixels in row and two adjacent pixels therein have a gray-level difference therebetween greater than a predetermined value, a timing control circuit of the display apparatus divides the associated data lines into a plurality of data line groups each constituted by four consecutive data lines and configure the data voltages on the two middle data lines in one data line group to have a first polarity and the data voltages on the rest two data lines in the same data line group to have a second polarity. An operation method of the display apparatus is also provided.

Claims

1. A display apparatus, comprising:

a display panel, comprising;

a plurality of data lines;

a plurality of scan lines; and

a plurality of sub-pixels arranged in a matrix manner, and each sub-pixel being electrically connected to one of the data lines and one of the scan lines;

a data driving circuit electrically connected to the data lines;

a scan driving circuit electrically connected to the scan lines; and

a timing control circuit electrically connected to the data driving circuit and the scan driving circuit, wherein the timing control circuit is configured to control the scan driving circuit to drive the scan lines and control the data driving circuit to output data voltages to the data lines, the data voltages on any two consecutive data lines initially are configured to have different polarities while the data lines are being supplied with data voltages from the data driving circuit;

the timing control circuit is further configured to judge a to-be-displayed image whether or not containing an area for displaying a predetermined pattern constituted by a plurality of pixels in row, wherein at least one of the pixels in the predetermined pattern has a first gray level, another one pixel adjacent to the pixel has a second gray level, and the first and second gray levels have a gray-level difference therebetween greater than or equal to a predetermined value;

the timing control circuit is further configured to, if the to-be-displayed image contains the area corresponding to the predetermined pattern, divide the data lines associated with the area into a plurality of data line groups each constituted by four consecutive data lines and configure, while the data driving circuit outputs the data voltages associated with the area, data voltages on the two middle data lines in one data line group to have a first polarity and the data voltages on the rest two data lines in the same data line group to have a second polarity.

2. The display apparatus according to claim 1, wherein each same-column sub-pixel is configured to be electrically connected to one and the same data line, each same-row sub-pixels is configured to be electrically connected to two of the scan lines, and the sub-pixels electrically connected to the two scan lines are configured to have an intersecting arrangement.

3. The display apparatus according to claim 2, wherein the data voltages, sequentially supplied to any two consecutive sub-pixels in column and electrically connected to one and the same data line, are configured to have different polarities.

4. The display apparatus according to claim 2, wherein the predetermined pattern is constituted by four consecutive pixels in row, the first two pixels each have the first gray level and the following two pixels each have the second gray level.

5. The display apparatus according to claim 4, wherein in the predetermined pattern the first two pixels have a black color and the following two pixels have a white color;

or, the first two pixels have a white color and the following two pixels have a black color.

6. The display apparatus according to claim 1, wherein each same-row sub-pixel is configured to be electrically connected to one and the same scan line, each same-column sub-pixels is configured to be electrically connected to two of the data lines, and the sub-pixels electrically connected to the two data lines are configured to have an intersecting arrangement.

7. The display apparatus according to claim 6, wherein the predetermined pattern is constituted by two consecutive pixels in row, the first pixel has the first gray level and the second pixel has the second gray level.

8. The display apparatus according to claim 7, wherein in the predetermined pattern the first pixel has a black color and the second pixel has a white color;

or, the first pixel has a white color and the second pixel has a black color.

9. An operation method of a display apparatus, the display apparatus comprising a display panel, the display panel comprising a plurality of data lines, a plurality of scan lines and a plurality of sub-pixels, the sub-pixels being arranged in a matrix manner, and each sub-pixel being electrically connected to one of the data lines and one of the scan lines, the operation method comprising:

providing data voltages with specific polarity to the data lines, wherein the data voltages on any two consecutive data lines have different polarities;

determining a to-be-displayed image whether or not having an area for displaying a predetermined pattern constituted by a plurality of pixels in row, wherein in this predetermined pattern at least one pixel has a first gray level, one adjacent pixel has a second gray pixel, and the first and second pixel grays have a gray-level difference therebetween greater than or equal to a predetermined value; and

diving, if the to-be-display image having the area for displaying the predetermined pattern, the data lines associated with the area into a plurality of data line groups each including four consecutive data lines, and supplying first-polarity data voltage to the two middle consecutive data lines and supplying second-polarity data voltage to the rest two data lines in each data line group.

10. The operation method according to claim 9, wherein each same-column sub-pixel is configured to be electrically connected to one and the same data line, each same-row sub-pixels is configured to be electrically connected to two of the scan lines, and the sub-pixels electrically connected to the two scan lines are configured to have an intersecting arrangement.

11. The operation method according to claim 10, wherein the data voltages, sequentially supplied to any two consecutive sub-pixels in column and electrically connected to one and the same data line, are configured to have different polarities.

12. The operation method according to claim 10, wherein the predetermined pattern is constituted by four consecutive pixels in row, the first two pixels each have the first gray level and the following two pixels each have the second gray level.

13. The operation method according to claim 12, wherein in the predetermined pattern the first two pixels have a black color and the following two pixels have a white color;

or, the first two pixels have a white color and the following two pixels have a black color.

14. The operation method according to claim 9, wherein each same-row sub-pixel is configured to be electrically connected to one and the same scan line, each same-column sub-pixels is configured to be electrically connected to two of the data lines, and the sub-pixels electrically connected to the two data lines are configured to have an intersecting arrangement.

15. The operation method according to claim 14, wherein the predetermined pattern is constituted by two consecutive pixels in row, the first pixel has the first gray level and the second pixel has the second gray level.

16. The operation method according to claim 14, wherein in the predetermined pattern the first pixel has a black color and the second pixel has a white color;

or, the first pixel has a white color and the second pixel has a black color.