| US 7,595,785 B2 | ||
| Display device and driving device for a light source | ||
| Hyeon-Yong Jang, Osan-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., (Korea, Republic of) | ||
| Filed on Jul. 22, 2005, as Appl. No. 11/187,480. | ||
| Claims priority of application No. 10-2004-0057127 (KR), filed on Jul. 22, 2004. | ||
| Prior Publication US 2006/0017404 A1, Jan. 26, 2006 | ||
| Int. Cl. G09G 3/36 (2006.01) | ||
| U.S. Cl. 345—102 [315/291] | 19 Claims |
| 1. A driving device for at least one light source, comprising:
a temperature sensor operable for sensing a surrounding temperature of the light source and outputting a first control signal
in response to the sensed temperature;
a signal output portion operable for receiving a second control signal based on a first brightness control signal applied
from an external source; changing the second control signal based on the first control signal; and outputting the changed
second control signal; and
an inverter controller operable for receiving the changed second control signal and outputting a third control signal based
on the changed second control signal, wherein
the first control signal becomes a low level when the surrounding temperature of the light source is less than a predetermined
temperature of the light source, and the second and third control signals are adjusted based on the first control signal,
and
the second control signal becomes a low level when the first control signal is a low level, and the third control signal is
ramped up to a high level for driving the at least one light source.
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