DISPLAY DEVICE AND DRIVING METHOD THEREOF

• US 20140015820A1
• Filed: 11/05/2012
• Published: 01/16/2014
• Est. Priority Date: 07/12/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Choi, Yong-Jun, Park, Po-Yun, Lee, Min Joo, Cho, Jung-Hwan, Ko, Hyun Seok
• Granted Patent: US 9,305,501 B2
• Time in Patent Office: Days
• US Class Current: 345/211
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2360/10 Display system comprising arrangements, such as a coprocessor, specific for motion video images
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general

Abstract

A method to drive a display device includes: transmitting at least one data voltage to one or more of a plurality of data lines, scanning one or more of a plurality of gate lines to enable transmission of a gate signal in association with a first frame of a first hold section of a first still image section associated with display of a still image, and scanning one or more of the plurality of gate lines to enable transmission of the gate signal every frame of a first refresh section. The first still image section comprises the first refresh section.

Claims

1. A method to drive a display device, the method comprising:

transmitting at least one data voltage to one or more of a plurality of data lines;

scanning one or more of a plurality of gate lines to enable transmission of a gate signal in association with a first frame of a first hold section of a first still image section associated with display of a still image; and

scanning one or more of the plurality of gate lines to enable transmission of the gate signal every frame of a first refresh section,

wherein the first still image section comprises the first refresh section.

2. The method of claim 1, further comprising:

scanning, after the first refresh section, one or more of the plurality of gate lines to enable transmission of the gate signal in association with a first frame of a second hold section, the first still image section further comprising the second hold section,

wherein a polarity of the at least one data voltage in association with the first hold section is opposite of a polarity of the at least one data voltage in association with the second hold section.

3. The method of claim 2, wherein an absolute value of the at least one data voltage between at least some neighboring frames associated with the first refresh section are different.

4. The method of claim 3, wherein an absolute value of the at least one data voltage associated with the first frame of the second hold section is different from an absolute value of the at least one data voltage associated with the first hold section.

5. The method of claim 4, wherein a polarity of the at least one data voltage associated with the first refresh section is reversed every frame.

6. The method of claim 5, further comprising:

scanning one or more of the plurality of gate lines to enable transmission of the gate signal in association with at least one transition frame positioned between the first refresh section and the second hold section, the first still image section further comprising the at least one transition frame,

wherein a polarity of the at least one data voltage associated with the at least one transition frame is reversed with respect to a previous frame.

7. The method of claim 1, further comprising:

scanning, in response to the first hold section comprising a plurality of frames, one or more of the plurality of gate lines in association with at least one of the plurality of frames except for the first frame of the first hold section.

8. The method of claim 1, further comprising:

determining a number of frames associated with the first still image section;

summing polarities of the at least one data voltage;

generating, based on a result of the summing, a data modification signal;

processing a received image signal based on the data modification signal to generate image data; and

converting the image data to the at least one data voltage.

9. The method of claim 8, further comprising:

determining, based on the data modification signal, a polarity of the at least one data voltage corresponding to a first frame associated with a second still image section.

10. The method of claim 9, further comprising:

scanning one or more of the plurality of gate lines to enable transmission of the gate signal in association with a first frame of at least one third hold section, the second still image section comprising the at least one third hold section; and

determining, based on the data modification signal, a number of frames associated with the at least one third hold section.

17. The method of claim 1, wherein the first refresh section occurs after the first hold section.

18. The method of claim 6, wherein the at least one data voltage associated with the at least one transition frame is applied to at least some of a plurality of pixels associated with the display of the still image, the plurality of pixels being connected to the plurality of gate lines.

11. A display device, comprising:

a plurality of gate lines configured to transmit a gate signal;

a plurality of data lines configured to transmit a data voltage;

a plurality of pixels connected to the plurality of gate lines and the plurality of data lines;

a gate driver configured to transmit the gate signal to at least one of the plurality of gate lines;

a data driver configured to transmit the data voltage to at least one of the plurality of data lines; and

a signal controller configured to control the gate driver and the data driver,

wherein the plurality of pixels are configured to display a still image in association with a still image section comprising a first hold section and a first refresh section, and

wherein the gate driver is further configured to;

scan at least some of the plurality of gate lines to enable transmission of the gate signal to at least some of the plurality of pixels in association with a first frame of the first hold section, and

scan at least some of the plurality of gate lines to enable transmission of the gate signal every frame of the first refresh section.

12. The display device of claim 11, wherein:

the still image section further comprises a second hold section after the first refresh section,

the gate driver is further configured to scan at least some of the plurality of gate lines to enable transmission of the gate signal to at least some of the plurality of pixels in association with a first frame of the second hold section, and

a polarity of the data voltage associated with the first hold section is opposite to a polarity of the data voltage associated with the second hold section.

13. The display device of claim 12, wherein an absolute value of the data voltage between at least some neighboring frames associated with the first refresh section is different.

14. The display device of claim 13, wherein an absolute value of the data voltage associated with the first frame of the second hold section is different from an absolute value of the data voltage associated with the first hold section.

15. The display device of claim 14, wherein a polarity of the data voltage associated with the first refresh section is reversed every frame.

16. The display device of claim 15, wherein:

the still image section further comprises at least one transition frame, the gate driver being configured to scan at least some of the plurality of gate lines in association with the at least one transition frame, the at least one transition frame being positioned between the first refresh section and the second hold section, and

a polarity of the data voltage associated with the at least one transition frame is reversed with respect to a previous frame.

19. The display device of claim 11, wherein the first refresh section occurs after the first hold section.

20. A method, comprising:

causing, at least in part, a motion picture section to be displayed based on reception of an image signal transmission, the image signal transmission being associated with display of a still image between motion picture sections;

receiving an indication corresponding to a transition between display of the motion picture section and display of a still image section;

causing, at least in part, the image signal transmission to be halted in response to receiving the indication; and

causing, at least in part, the still image to be displayed in association with the still image section.