Driving device of flat display panel and method thereof

• US 7,382,346 B2
• Filed: 04/16/2004
• Issued: 06/03/2008
• Est. Priority Date: 04/18/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Moon, Seong-Hak
• Primary Examiner(s): LEWIS, DAVID LEE
• Application Number:
  US10/825,368
• Publication Number:
  US 20040207612A1
• Time in Patent Office: 1,509 Days
• Field of Search: 345 55-100, 345204-214
• US Class Current: 345/100
• CPC Class Codes: G09G 2310/0251 Precharge or discharge of pixel before applying new pixel voltage
• CPC Class Codes: G09G 2310/0267 Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
• CPC Class Codes: G09G 2310/0275 Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
• CPC Class Codes: G09G 2310/063 Waveforms for resetting the whole screen at once
• CPC Class Codes: G09G 2320/0223 Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
• CPC Class Codes: G09G 3/22 using controlled light sources

Abstract

A driving device of a flat display panel and its method are disclosed. The driving device includes a scan driving unit for applying scan pulses to both ends of each scan line of the flat display panel

Claims

1. A driving device of a flat display panel comprising:

a scan driving circuit for simultaneously applying scan pulses to both ends of each scan line of the flat display panel;

a first data driving circuit for applying data pulses to odd numbered data lines among data lines of the flat display panel; and

a second data driving circuit for applying data pulses to even numbered data lines of the data lines, wherein the scan pulses have a same voltage, a same phase and a same pulse width.

2. The device of claim 1, further comprising a controller for outputting a control signal for controlling the scan driving circuit.

3. The device of claim 2, wherein the controller outputs a control signal for simultaneously applying the scan pulses.

11. The device of claim 1, wherein the odd numbered data lines extend from the first data driving circuit on a first side of the panel to a second side of the panel, and the even numbered data lines extend from the second data driving circuit on the second side of the panel to the first side of the panel.

12. The device of claim 11, wherein data pulses for the odd numbered data lines are applied by only the first data driving circuit, and data pulses for the even numbered data lines are applied by only the second data driving circuit.

13. The device of claim 1, wherein the first data driving circuit applies data pulses to only odd numbered data lines, and the second data driving circuit applies data pulses to only even numbered data pulses.

4. A driving device of a flat display panel comprising:

a first scan driving circuit for applying scan pulses to one side of each scan line of the flat display panel;

a second scan driving circuit for applying the scan pulses to the other side of each scan line;

a first data driving circuit for applying data pulses to odd numbered data lines among data lines of the flat display panel; and

a second data driving circuit for applying data pulses to even numbered data lines of the data lines, wherein the scan pulses have a same voltage, a same phase and a same pulse width.

5. The device of claim 4, further comprising a controller for outputting a control signal to control the first and second scan driving circuits.

6. The device of claim 5, wherein the controller outputs a control signal to simultaneously apply the scan pulses.

14. The device of claim 4, wherein the odd numbered data lines extend from the first data driving circuit on a first side of the panel to a second side of the panel, and the even numbered data lines extend from the second data driving circuit on the second side of the panel to the first side of the panel.

15. The device of claim 14, wherein data pulses for the odd numbered data lines are applied by only the first data driving circuit, and data pulses for the even numbered data lines are applied by only the second data driving circuit.

7. A driving method of a flat display panel comprising:

simultaneously applying scan pulses to both ends of each scan line of the flat display panel;

applying data pulses to odd numbered data lines among data lines of the flat display panel; and

applying data pulses to even numbered data lines of the data lines, wherein the scan pulses have a same voltage, a same phase and a same pulse width.

8. The method of claim 7, further comprising outputting a control signal to simultaneously apply the scan pulses.

9. The method of claim 7, wherein applying data pulses to odd numbered data lines includes a first data driving unit applying data pulses to the odd numbered data lines.

10. The method of claim 9, wherein applying data pulses to even numbered data lines includes a second data driving unit applying data pulses to the even numbered data lines.