Patent ID: 8816955
Filing Date: 2014-08-26
Classification: G09G

Abstract:
1. A display apparatus comprising: a liquid crystal panel; a light guide plate disposed at a rear side of the liquid crystal panel; at least one LED module disposed in at least one side of the light guide plate comprising: a plurality of LEDs; a first terminal connected to an anode of a first LED placed at one end of the plurality of LEDs connected in series, a second terminal connected to a cathode of the first LED, and a third terminal connected to a cathode of a last LED placed at the other end of the plurality of LEDs connected in series; a driver which drives the plurality of LEDs comprising: a plus terminal and a minus terminal, wherein the first terminal is connected to the plus terminal, and the third terminal is connected to the minus terminal; an image analyzer which analyzes an input image; and a switch unit which comprises: a first resistor directly connected to the first terminal at one end and to a first node at the other end, a second resistor directly connected to the first node at one end and to a second node at the other end, a third resistor directly connected to the first node at one end and to a third node at the other end, a first transistor directly connected to the third node at a gate terminal, to the first terminal at a source terminal, and to the second terminal at a drain terminal, and a second transistor directly connected to the second node at a drain terminal, an external signal being applied to a gate terminal of the second transistor, and a source terminal of the second transistor being grounded, wherein, according to a result of the analyzing the input image, the switch unit turns off at least one LED among the plurality of LEDs while the driver drives a remainder of the plurality of LEDs, wherein the at least one LED is disposed closer to a corner of the liquid crystal panel than the remainder of the plurality of LEDs.