IP Library › Patent Application 13935565

Patent Application

App. No. 13/935,565

ELECTROLUMINESCENT DISPLAY PANEL AND DRIVING METHOD THEREOF

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Patent No.: US None
App. No.: 13/935,565

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Abstract

An electroluminescent display panel includes a plurality of sub-pixels; a plurality of scan lines, each of the scan lines being electrically connected to a first row of sub-pixels and a second row of sub-pixels of two adjacent rows; a plurality of first data lines electrically connected to the first rows of sub-pixels of corresponding columns respectively; a plurality of second data lines electrically connected to the second rows of sub-pixels of corresponding columns respectively; a scan driving unit for outputting a plurality of scanning signals; and a data driving unit for outputting a plurality of dada signals; wherein the scanning signals sequentially turn on two adjacent rows of sub-pixels via the scan lines, the data signals on the first data lines charge the first rows of sub-pixels of the corresponding columns, and the data signals on the second data lines charge the second rows of sub-pixels of the corresponding columns.

Claims (49)

1 . An electroluminescent display panel, comprising:

a plurality of pixels, respectively comprising a plurality of sub-pixels;

a plurality of scan lines, each of the scan limes being electrically connected to a first row of sub-pixels and a second row of sub-pixels of two adjacent rows of sub-pixels;

a plurality of first data lines, each of the first data lines being electrically connected to the first rows of sub-pixels of a corresponding column of sub-pixels;

a plurality of second data lines, each of the second data lines being electrically connected to the second rows of sub-pixels of a corresponding column of sub-pixels;

a scan driving unit, coupled to the plurality of scan lines for outputting a plurality of scanning signals; and

a data driving unit, coupled to the first data lines and the second data lines for outputting a plurality of data signals;

wherein the scanning signals sequentially turn on two adjacent rows of sub-pixels via the scan lines, the data signals on the first data lines charge the first rows of sub-pixels of the corresponding columns of sub-pixels, and the data signals on the second data lines charge the second rows of sub-pixels of the corresponding columns of sub-pixels.

2 . The electroluminescent display panel of claim 1 further comprising a multiplexer configured to control conduction statuses between the data driving unit and the first and second data lines.

3 . The electroluminescent display panel of claim 2 , wherein the multiplexer comprises a plurality of first switches and a plurality of second switches respectively and interlacedly coupled between pins of the data driving unit and the first or second data lines, and the first switches are conducted during a first enable period of a scanning period of each of the scan lines, the second switches are conducted during a second enable period of the scanning period, the first enable period is different from the second enable period.

4 . The electroluminescent display panel of claim 3 , wherein each of the first enable period and the second enable period is not shorter than a charging time of each of the sub-pixels.

5 . The electroluminescent display panel of claim 4 , wherein the scanning period further comprises a disable period when the data driving unit and the data lines are disconnected, and the disable period is different from and later than the first and second enable periods.

6 . The electroluminescent display panel of claim 2 , wherein the multiplexer comprises:

a plurality of first switches respectively coupled between pins of the data driving unit and the corresponding first data lines;

a plurality of second switches respectively coupled between pins of the data driving unit and the corresponding second data lines;

wherein the multiplexer conducts the first switches during a first enable period of a scanning period of each of the scan lines, and conducts the second switches during a second enable period of the scanning period, the first enable period is different from the second enable period.

7 . The electroluminescent display panel of claim 6 , wherein each of the first enable period and the second enable period is not shorter than a charging time of each of the sub-pixels.

8 . The electroluminescent display panel of claim 7 , wherein the scanning period further comprises a disable period when the data driving unit and the data lines are disconnected, and the disable period is different from the first and second enable periods.

9 . The electroluminescent display panel of claim 2 , wherein each of the pixels comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, and one of any three adjacent columns of sub-pixels is a column of green sub-pixels, the multiplexer comprises:

a plurality of first switches, each of the first switches being coupled to one of a first data line and a second data line corresponding to the column of green sub-pixels;

a plurality of second switches respectively coupled to a second data line corresponding to a column of red sub-pixels and a first data line corresponding to a column of blue sub-pixels; and

a plurality of third switches respectively coupled to a first data line corresponding to the column of red sub-pixels and a second data line corresponding to the column of blue sub-pixels;

wherein the multiplexer conducts the first switches during a first enable period of a scanning period of each of the scan lines, conducts the second switches during a second enable period of the scanning period, and conducts the third switches during a third enable period of the scanning period.

10 . The electroluminescent display panel of claim 2 , wherein each of the pixels comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, and one of any three adjacent columns of sub-pixels is a column of green sub-pixels, the multiplexer comprises:

a plurality of first switches respectively coupled to a first data line and a second data line corresponding to the column of green sub-pixels;

a plurality of second switches respectively coupled to a first data line corresponding to a column of red sub-pixels and a second data line corresponding to a column of blue sub-pixels; and

a plurality of third switches respectively coupled to a second data line corresponding to the column of red sub-pixels and a first data line corresponding to the column of blue sub-pixels;

11 . The electroluminescent display panel of claim 2 , wherein each of the pixels comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, and one of any two adjacent columns of sub-pixels is a column of green sub-pixels, the multiplexer comprises:

a plurality of first switch sets, comprising a first set of first switches and a second set of first switches; and

a plurality of second switch sets, comprising a first set of second switches and a second set of second switches;

wherein the first set of first switches are respectively coupled to first data lines of corresponding columns of green sub-pixels, the second set of first switches are coupled to second data lines of corresponding columns of green sub-pixels, the first set of second switches are respectively coupled to second data lines of corresponding columns of sub-pixels adjacent to the first data lines of the columns of green sub-pixels, and the second set of second switches are respectively coupled to first data lines of corresponding columns of sub-pixels adjacent to the second data lines of the columns of green sub-pixels;

12 . The electroluminescent display panel of claim 2 , wherein each of the pixels comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, and one of any three adjacent columns of sub-pixels is a column of green sub-pixels, the multiplexer comprises:

a plurality of first switch sets, comprising a first set of first switches and a second set of first switches;

a plurality of second switch sets, comprising a first set of second switches and a second set of second switches; and

a plurality of third switch sets, comprising a first set of third switches and a second set of third switches;

wherein the first set of first switches are respectively coupled to first data lines of corresponding columns of green sub-pixels, the second set of first switches are respectively coupled to second data lines of corresponding columns of green sub-pixels, the first set of second switches are respectively coupled to first data lines of corresponding columns of sub-pixels adjacent to the first data lines of the columns of green sub-pixels, the first set of third switches are respectively coupled to second data lines of corresponding columns of sub-pixels adjacent to the first data lines of the columns of green sub-pixels, the second set of second switches are respectively coupled to first data lines of corresponding columns of sub-pixels adjacent to the second data lines of the columns of green sub-pixels, and the second set of third switches are respectively coupled to second data lines of corresponding columns of sub-pixels adjacent to the second data lines of the columns of green sub-pixels;

13 . The electroluminescent display panel of claim 1 , wherein a number of the scan lines is half of a number of the rows of sub-pixels, and a total number of the first and second data lines is double of a number of the columns of the sub-pixels.

14 . A driving method of an electroluminescent display panel, the electroluminescent display panel comprising a plurality of pixels, a plurality of scan lines, a plurality of first data lines, and a plurality of second data lines, each of the pixels comprising a plurality of sub-pixels, each of the scan limes being electrically connected to a first row of sub-pixels and a second row of sub-pixels of two adjacent rows of sub-pixels, each of the first data lines being electrically connected to the first rows of sub-pixels of a corresponding column of sub-pixels, each of the second data lines being electrically connected to the second rows of sub-pixels of a corresponding column of sub-pixels, the driving method comprising:

applying a plurality of scanning signals to the plurality of scan lines for sequentially turning on two adjacent rows of sub-pixels during a scanning period, the plurality of scanning signals being not overlapped with each other; and

applying a plurality of data signals for charging a first row of sub-pixels of turned-on two adjacent rows of sub-pixels via the first data lines, and charging a second row of sub-pixels of the turned-on two adjacent rows of sub-pixels via the second data lines.

15 . The driving method of claim 14 , wherein charging the first row of sub-pixels of the turned-on two adjacent rows of sub-pixels via the first data lines, and charging the second row of sub-pixels of the turned-on two adjacent rows of sub-pixels via the second data lines is charging the first row of sub-pixels of the turned-on two adjacent rows of sub-pixels via the first data lines, and charging the second row of sub-pixels of the turned-on two adjacent rows of sub-pixels via the second data lines simultaneously.

16 . The driving method of claim 14 further comprising a multiplexer with a plurality of first switches and a plurality of second switches controlling conduction statuses between a data driving unit and the first and second data lines, wherein the first switches are conducted during a first enable period of a scanning period of each of the scan lines, and the second switches are conducted during a second enable period of the scanning period, the first enable period is different from the second enable period.

17 . The driving method of claim 16 further comprising disconnecting the data driving unit and the data lines during a disable period of the scanning period, wherein the disable period is different from the first and second enable periods.

18 . The driving method of claim 17 , wherein each of the first enable period, the second enable period and the disable period is not shorter than a charging time of each of the sub-pixels.

19 . The driving method of claim 16 , further comprising applying a pre-charge signal to the sub-pixels during a reset period before the scanning period.

20 . The driving method of claim 19 , wherein the multiplexer is conducted during the reset period.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 5, 2013

From: WANG, TSANG-HONG; LAU, CHEE-WAI

To: AU OPTRONICS CORP.

Reel/Frame 030741/0087 →