Driving method for eliminating the contamination of displayed images in the vertical direction in driving DC plasma display panels in a DC mode

• US 6,069,450 A
• Filed: 07/24/1997
• Issued: 05/30/2000
• Est. Priority Date: 07/24/1996
• Status: Expired due to Fees

• Current Assignee: Hyundai Plasma Co., Ltd.
• Original Assignee: SK Hynix Inc.
• Inventors: Sakai, Tetsuo, Jung, Byung Moon
• Primary Examiner(s): MIS, DAVID C
• Application Number:
  US08/899,760
• Time in Patent Office: 1,041 Days
• Field of Search: 315/169.1, 315/169.3, 315/169.4, 315/260, 315/261, 315/291, 315/324, 315/334-337
• US Class Current: 315/169.1
• CPC Class Codes: G09G 3/282 using DC panels

Abstract

A method of driving DC plasma display panels according to a DC mode memory system is provided. According to the method, a compensation pulse for eliminating or reducing the contamination of a displayed image resulting from the application of a write pulse is applied to a position close to the write pulse. The method of the present invention has various advantages that the contamination of a displayed image generating in a direction normal to the display screen is eliminated or reduced; when the method is performed according to a DC mode memory system, the light-emission time can be concentrated to reduce the generation of false outlines so that the general image quality can be remarkably improved; and the electrical power required for the application of the maintenance pulse can be saved to thereby improve efficiency.

Claims

1. A method of driving a DC plasma display panel comprising applying a write pulse to the DC plasma display panel to display an image and applying a compensation pulse directly before or after the write pulse so that contamination of the displayed image taking place by the application of said write pulse is reduced.

2. The method of driving a DC plasma display panel according to claim 1, wherein polarity of said compensation pulse is different from polarity of said write pulse.

3. The method of driving a DC plasma display panel according to claim 1, wherein said compensation pulse is applied directly after the applying said write pulse.

4. The method of driving a DC plasma display panel according to claim 1, wherein the level of the amplitude of said compensation pulse is substantially equal to the level of discharge stop of a scanning cell.

5. A method of driving a DC plasma display panel comprising applying a write pulse to the DC plasma display panel to display an image and applying a compensation pulse directly adjacent to the write pulse so that contamination of the displayed image taking place by the application of said write pulse is reduced.

6. The method of driving a DC plasma display panel according to claim 5, wherein polarity of said compensation pulse is different from polarity of said write pulse.

7. The method of driving a DC plasma display panel according to claim 5, wherein said compensation pulse is applied directly after the applying said write pulse.

8. The method of driving a DC plasma display panel according to claim 5, wherein the level of the amplitude of said compensation pulse is substantially equal to the level of discharge stop of a scanning cell.