| US 7,570,236 B2 | ||
| Display device and method for driving the same | ||
| Min-Koo Han, Seoul (Korea, Republic of); and Jae-hoon Lee, Seoul (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., (Korea, Republic of); and Seoul National University Industry Foundation, (Korea, Republic of) | ||
| Filed on Nov. 16, 2006, as Appl. No. 11/560,562. | ||
| Claims priority of application No. 10-2005-0117198 (KR), filed on Dec. 02, 2005. | ||
| Prior Publication US 2007/0126680 A1, Jun. 07, 2007 | ||
| Int. Cl. G09G 3/32 (2006.01) | ||
| U.S. Cl. 345—82 [345/204; 345/78; 315/169.3] | 26 Claims |
| 1. A display device comprising:
a light-emitting element which emits light when a driving current is applied thereto;
a driving thin-film transistor controlling the magnitude of the driving current applied to the light-emitting element;
a capacitor charging a voltage which varies depending on a data voltage and a threshold voltage of the driving thin-film transistor
and maintaining a voltage corresponding to a difference between the data voltage and a gate voltage of the driving thin-film
transistor;
a first switching unit supplying the data voltage to the capacitor in response to a scan signal; and
a second switching unit that is diode-connected and applies a light emitting signal to the driving thin-film transistor, wherein
the light emitting signal is not a constant voltage signal.
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