Plasma display device and driving method thereof

• US 20030080926A1
• Filed: 10/16/2002
• Published: 05/01/2003
• Est. Priority Date: 10/30/2001
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Morimoto, Takashi
• Granted Patent: US 7,068,243 B2
• Time in Patent Office: Days
• US Class Current: 345/60
• CPC Class Codes: G09G 2310/0205 Simultaneous scanning of several lines in flat panels
• CPC Class Codes: G09G 2330/045 Protection against panel overheating
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/2025 the sub-frames having all the same time duration
• CPC Class Codes: G09G 3/2037 with specific control of sub-frames corresponding to the least significant bits
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/2077 by a combination of two or more gradation control methods
• CPC Class Codes: G09G 3/293 for address discharge
• CPC Class Codes: G09G 3/2948 by increasing the total sustaining time with respect to other times in the frame
• CPC Class Codes: G09G 3/2983 using non-standard pixel electrode arrangements
• CPC Class Codes: H01J 11/12 with main electrodes provided on both sides of the discharge space
• CPC Class Codes: H01J 11/26 Address electrodes
• CPC Class Codes: H01J 11/28 Auxiliary electrodes, e.g. priming electrodes or trigger electrodes

Abstract

The plasma display device has pixels each formed by a plurality of sub pixels of the same color provided in an address-electrode direction, and provides gray-scale display by controlling the number of sub pixels to be turned ON. A plurality of address electrodes are provided for each sub pixels. Each sub pixel is addressed by a conductive layer which is electrically connected to one of the plurality of address electrodes.

Claims

1. A plasma display device having pixels each formed by a plurality of sub pixels of the same color provided in an address-electrode direction, for providing gray-scale display by controlling the number of sub pixels to be turned ON, wherein

a plurality of address electrodes are provided for each sub pixel, and

each sub pixel is addressed by a conductive layer which is electrically connected to one of the plurality of address electrodes.

2. The plasma display device according to claim 1, wherein the gray-scale display provided by controlling the number of sub pixels to be turned ON is provided by controlling the number of sub pixels of an X-electrode direction to be turned ON and the number of sub pixels of the address-electrode direction to be turned ON.

3. The plasma display device according to claim 1, wherein gray-scale display is performed according to input data in combination with the gray-scale display provided by controlling the number of sub pixels to be turned ON in each pixel formed by a plurality of sub pixels and gray-scale display based on a time dither method in which each filed is divided into a plurality of sub frames and each sub pixel is controlled to be or not to be turned ON in each sub frame.

4. A plasma display device having pixels each formed by a plurality of sub pixels of the same color provided in an X-electrode direction, for providing gray-scale display by controlling the number of sub pixels to be turned ON, wherein

a plurality of address electrodes are provided for each sub pixel, and

each sub pixel is addressed by a conductive layer which is electrically connected to one of the plurality of address electrodes.

5. The plasma display device according to claim 4, wherein the gray-scale display provided by controlling the number of sub pixels to be turned ON is provided by controlling the number of sub pixels of the X-electrode direction to be turned ON and the number of sub pixels of an address-electrode direction to be turned ON.

6. The plasma display device according to claim 4, wherein gray-scale display is performed according to input data in combination with the gray-scale display provided by controlling the number of sub pixels to be turned ON in each pixel formed by a plurality of sub pixels and gray-scale display based on a time dither method in which each filed is divided into a plurality of sub frames and each sub pixel is controlled to be or not to be turned ON in each sub frame.

7. A plasma display device, comprising:

a plurality of sub pixels provided adjacent to each other, wherein

the plurality of sub pixels include two types of sub pixels in which an electrode extends with different lengths in a direction in which the plurality of sub pixels are arranged.

8. The plasma display device according to claim 7, wherein gray-scale display provided by controlling the number of sub pixels to be turned ON is provided by controlling the number of sub pixels of an X-electrode direction to be turned ON and the number of sub pixels of an address-electrode direction to be turned ON.

9. The plasma display device according to claim 7, wherein gray-scale display is performed according to input data in combination with the gray-scale display provided by controlling the number of sub pixels to be turned ON in each pixel formed by a plurality of sub pixels and gray-scale display based on a time dither method in which each filed is divided into a plurality of sub frames and each sub pixel is controlled to be or not to be turned ON in each sub frame.

10. A plasma display device, comprising:

a plurality of sub pixels provided adjacent to each other, wherein

an electrode extends with the same length in each of the plurality of sub pixels in a direction in which the plurality of sub pixels are arranged.

11. The plasma display device according to claim 10, wherein gray-scale display provided by controlling the number of sub pixels to be turned ON is provided by controlling the number of sub pixels of an X-electrode direction to be turned ON and the number of sub pixels of an address-electrode direction to be turned ON.

12. The plasma display device according to claim 10, wherein gray-scale display is performed according to input data in combination with the gray-scale display provided by controlling the number of sub pixels to be turned ON in each pixel formed by a plurality of sub pixels and gray-scale display based on a time dither method in which each filed is divided into a plurality of sub frames and each sub pixel is controlled to be or not to be turned ON in each sub frame.

13. A plasma display device having pixels each formed by a plurality of sub pixels provided in an address-electrode direction, for providing gray-scale display by controlling the number of sub pixels to be turned ON, wherein

a difference in bright level is provided by two types of sub pixels having different electrode structures, i.e., a sub pixel having a single X-electrode and a single Y-electrode and a sub pixel having two X-electrodes and a single Y-electrode.

14. The plasma display device according to claim 13, wherein the gray-scale display provided by controlling the number of sub pixels to be turned ON is provided by controlling the number of sub pixels of an X-electrode direction to be turned ON and the number of sub pixels of the address-electrode direction to be turned ON.

15. The plasma display device according to claim 13, wherein gray-scale display is performed according to input data in combination with the gray-scale display provided by controlling the number of sub pixels to be turned ON in each pixel formed by a plurality of sub pixels and gray-scale display based on a time dither method in which each filed is divided into a plurality of sub frames and each sub pixel is controlled to be or not to be turned ON in each sub frame.

16. A method for driving a plasma display device, wherein

the plasma display device has picture elements each formed by first and second pixels provided adjacent to each other in an X-electrode direction,

each of the first and second pixels is formed by sub pixels of R (red), G (green), B (blue) provided adjacent to each other in the X-electrode direction,

a gray-scale signal corresponding to a first pixel of a picture element is applied to a plurality of sub pixels in the first pixel of the picture element, and

a gray-scale signal of a function of the gray-scale signal corresponding to the first pixel of the picture element and a gray-scale signal corresponding to a first pixel of an adjacent picture element, i.e., a picture element located adjacent to a second pixel of the picture element, is applied to a plurality of sub pixels in the second pixel of the picture element.

17. A method for driving a plasma display device, wherein

the plasma display device has picture elements each formed by first and second pixels provided adjacent to each other in an X-electrode direction,

each of the first and second pixels is formed by sub pixels of R, G, B provided adjacent to each other in the X-electrode direction, and

sub pixels of R, G, B are turned ON/OFF by applying a gray-scale signal corresponding to a position of a first pixel of a picture element to each of sub pixels of R, G, B in the first pixel of the picture element, and applying to each of sub pixels of R, G, B in a second pixel of the picture element an average of a gray-scale signal which is applied to a corresponding one of the sub pixels of R, G, B in the first pixel of the picture element and a gray-scale signal which is applied to a corresponding one of sub pixels of R, G, B in a first pixel of an adjacent picture element, i.e., a picture element located adjacent to the second pixel.