METHOD OF DRIVING A DISPLAY PANEL AND DISPLAY APPARATUS FOR PERFORMING THE SAME

• US 20100201663A1
• Filed: 07/16/2009
• Published: 08/12/2010
• Est. Priority Date: 02/06/2009
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, Sung-Hun, JEONG, Hyun-Seok, LEE, Doo-Won, LEE, Dong-Gyu
• Application Number:
  US12/503,897
• Publication Number:
  US 20100201663A1
• Time in Patent Office: Days
• US Class Current: 345/207
• CPC Class Codes: G09G 2310/061 for resetting or blanking
• CPC Class Codes: G09G 2320/0238 Improving the black level
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• CPC Class Codes: G09G 2360/145 the light originating from the display screen
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A method of driving a display panel includes; sensing an illumination of a surrounding area which surrounds the display panel, and selectively displaying a black line image on the display panel in accordance with the illumination of the surrounding area.

Claims

1. A method of driving a display panel, the method comprising:

sensing an illumination of a surrounding area which surrounds the display panel; and

selectively displaying a black line image on the display panel in accordance with the illumination of the surrounding area.

2. The method of claim 1, wherein selectively displaying a black line image on the display panel comprises:

comparing the illumination of the surrounding area with a predetermined threshold value; and

inserting the black line image between adjacent normal line images, when the illumination of the surrounding area is less than the predetermined threshold value.

3. The method of claim 2, wherein inserting the black line image between normal line images comprises alternately displaying the normal line images and the black line image in a horizontal direction of the display panel.

4. The method of claim 2, wherein inserting the black line image between normal line images comprises alternately displaying the normal line images and the black line image in a vertical direction of the display panel.

5. The method of claim 2, wherein inserting the black line image between normal line images comprises alternately displaying the normal line images and the black line image in a diagonal direction of the display panel.

6. A display apparatus comprising:

a display panel comprising a plurality of pixels electrically connected to a plurality of gate lines and a plurality of data lines, respectively;

an illumination sensing section which senses an illumination of a surrounding area which surrounds the display panel; and

a panel driving section which drives the display panel to selectively display a black line image on the display panel in accordance with the illumination of the surrounding area.

7. The display apparatus of claim 6, wherein the panel driving section drives the display panel to insert the black line image between adjacent normal line images, when the illumination of the surrounding area is less than a threshold value.

8. The display apparatus of claim 7, wherein the panel driving section drives the display panel to alternately display the normal line images and the black line image in a horizontal direction of the display panel.

9. The display apparatus of claim 7, wherein the panel driving section drives the display panel to alternately display the normal line images and the black line image in a vertical direction of the display panel.

10. The display apparatus of claim 7, wherein the panel driving section drives the display panel to alternately display the normal line images and the black line image in a diagonal direction of the display panel.

11. The display apparatus of claim 7, wherein the panel driving section comprises:

a timing control part which converts gray scale data of an input image signal corresponding to an interval, in which the black line image is inserted, into black data, when the illumination signal is less than the threshold value; and

a data driving part which converts the black data into a black data voltage which is output to the data lines.

12. The display apparatus of claim 11, wherein the panel driving section comprises:

a timing control part which inserts null data to the input image signal corresponding to the interval, in which the black line image is inserted, to output the null data, when the illumination signal is less than the threshold value; and

a data driving part which converts the null data into a black data voltage which is output to the data lines.

13. The display apparatus of claim 7, wherein the panel driving section comprises:

a first gate driving part connected to odd-numbered gate lines and which outputs gate signals to the odd-numbered gate lines;

a second gate driving part connected to even-numbered gate lines and which outputs gate signals to the even-numbered gate lines; and

a timing control part which controls the first gate driving part and the second gate driving part to block the gate signals provided to the gate lines during an interval in which the black line image is inserted.

14. The display apparatus of claim 13, wherein gate signals corresponding to the odd-numbered gate lines are blocked during the interval in which the black line image is inserted.

15. The display apparatus of claim 13, wherein the gate signals corresponding to the even-numbered gate lines are blocked during the interval in which the black line image is inserted.