Display Device

• US 20100020116A1
• Filed: 10/01/2009
• Published: 01/28/2010
• Est. Priority Date: 07/30/2004
• Status: Abandoned Application

• Current Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Inventors: ENDO, Kenta, Ooishi, Yoshihisa, Imajo, Yoshihiro, Mori, Ikuko, Katou, Shisei
• Application Number:
  US12/571,564
• Publication Number:
  US 20100020116A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G09G 2310/061 for resetting or blanking
• CPC Class Codes: G09G 2320/02 Improving the quality of display appearance
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0252 Improving the response speed
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general

Abstract

In a display device which displays a black image by periodically inserting a black image, after the display of the black image, a first period in which a video signal different from a video signal for the black image is outputted to video signal lines is made different from a succeeding period in length.

Claims

1-13. -13. (canceled)

14. A display device which displays a black image by periodically inserting the black image, wherein timing that gate signal lines are turned on in response to the black image displayed by insertion is delayed than timing that the gate signal lines are turned on in response to images other than the black image displayed by insertion.

15. A display device which displays a black image by periodically inserting the black image, wherein a period during which gate signal lines are turned on in response to the black image displayed by insertion is shorter than a period during which the gate signal lines are turned on in response to images other than the black image displayed by insertion.

16. A display device which displays a black image by periodically inserting the black image, wherein a voltage of video signal lines which correspond to a black image displayed by insertion is set to a value different from a voltage of the video signal lines at the time of performing a black image display as an image.

17. A display device according to claim 16, wherein the different value is set lower than the voltage of the video signal lines at the time of displaying the black image which constitutes an image when the polarity of a video signal immediately before the black image displayed by insertion assumes a positive polarity and higher than the voltage of the video signal lines at the time of displaying the black image which constitutes an image when the polarity of a video signal immediately before the black image displayed by insertion assumes a negative polarity.

18-19. -19. (canceled)