US 9,812,090 B2
Display device and driving method thereof
Woon Yong Lim, Yongin-si (KR); and Ki Hyun Pyun, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin, Gyeonggi-Do (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si, Gyeonggi-do (KR)
Filed on Feb. 16, 2016, as Appl. No. 15/44,571.
Claims priority of application No. 10-2015-0082016 (KR), filed on Jun. 10, 2015.
Prior Publication US 2016/0365071 A1, Dec. 15, 2016
Int. Cl. G06F 3/038 (2013.01); G09G 5/00 (2006.01); G09G 5/18 (2006.01); G09G 3/20 (2006.01)
CPC G09G 5/18 (2013.01) [G09G 3/20 (2013.01); G09G 5/008 (2013.01); G09G 2310/0294 (2013.01); G09G 2330/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display device comprising:
a display unit configured to display an image using a light emitting device;
a signal controller configured to transmit an image signal and a control signal, the image signal is embedded with a clock signal;
a data driver comprising a clock data recovery (CDR) circuit that extracts from the image signal a first internal reference clock signal during an inactive period of a first frame control signal;
a memory that stores the frequency of a preset reference clock signal;
a comparator that compares the frequency of the recovered first internal reference clock signal with the frequency of the preset reference clock signal, wherein when the frequency of the recovered first internal reference clock signal is within an error range of the frequency of the preset reference clock signal, outputs the recovered first internal reference clock signal, and receives a second frame control signal, and when the second frame control signal corresponds to a previously set CDR circuit operating condition, recovers a second internal reference clock signal.