LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREOF

• US 20140176408A1
• Filed: 11/12/2013
• Published: 06/26/2014
• Est. Priority Date: 12/21/2012
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: PARK, Yong Beom, KANG, Jung Youl, LEE, Kyoung Koo, KIM, Han Su, LEE, Jin Hee
• Granted Patent: US 9,424,787 B2
• Time in Patent Office: Days
• US Class Current: 345/87
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general

Abstract

Discussed is an LCD device. The LCD device according to an embodiment of the present invention includes a liquid crystal panel in which a plurality of pixels are respectively formed in a plurality of areas defined by intersections between a plurality of gate lines and a plurality of data lines, and a driving unit configured to switch inversion systems for driving the liquid crystal panel at predetermined periods.

Claims

1. A liquid crystal display (LCD) device comprising:

a liquid crystal panel in which a plurality of pixels are respectively formed in a plurality of areas defined by intersections between a plurality of gate lines and a plurality of data lines; and

a driving unit configured to switch inversion systems for driving the liquid crystal panel at predetermined periods.

2. The LCD device of claim 1, wherein the inversion systems comprise at least two inversion systems.

3. The LCD device of claim 2, wherein the driving unit sequentially switches the at least two inversion systems in units of at least one frame for each inversion system.

4. The LCD device of claim 2, wherein the driving unit sequentially switches four inversion systems in units of one frame for each inversion system.

5. The LCD device of claim 2, wherein the driving unit sequentially switches four inversion systems in units of four frames for each inversion system.

6. The LCD device of claim 5, wherein the four inversion systems comprise a vertical 1-dot and horizontal 1-dot inversion system (V1H1), a vertical 2-dot and horizontal 1-dot inversion system (V2H1), a vertical 1-dot and horizontal 2-dot inversion system (V1H2), and a vertical 2-dot and horizontal 2-dot inversion system (V2H2).

7. A method of driving a liquid crystal display (LCD) device, the method comprising:

switching inversion systems for driving the LCD device at predetermined periods; and

converting image data into respective data voltages according to the switched inversion system, and outputting the respective data voltages to a plurality of data lines.

8. The method of claim 7, wherein the inversion systems comprise at least two inversion systems.

9. The method of claim 8, wherein the switching of the at least two inversion systems comprises sequentially switching the at least two inversion systems in units of at least one frame for each inversion system.

10. The method of claim 8, wherein the switching of the at least two inversion systems comprises sequentially switching four inversion systems in units of one frame for each inversion system.

11. The method of claim 8, wherein the switching of the at least two inversion systems comprises sequentially switching four inversion systems in units of four frames for each inversion system.

12. The method of claim 11, wherein the four inversion systems comprise a vertical 1-dot and horizontal 1-dot inversion system (V1H1), a vertical 2-dot and horizontal 1-dot inversion system (V2H1), a vertical 1-dot and horizontal 2-dot inversion system (V1H2), and a vertical 2-dot and horizontal 2-dot inversion system (V2H2).

13. A liquid crystal display (LCD) device comprising:

a liquid crystal panel in which a plurality of pixels are respectively formed in a plurality of areas defined by intersections between a plurality of gate lines and a plurality of data lines; and

a driving unit configured to switch from a first inversion system to a second inversion system for driving the liquid crystal panel from a first period to a second period.

14. The LCD device of claim 13, wherein the first period is at least a first frame, and the second period is at least a second frame.