Back light unit having a plurality of luminous elements and control method thereof

A back light unit (BLU) having a plurality of luminous elements, the BLU comprising:

• a plurality of brightness detectors, each to respectively detect the brightness of a corresponding luminous element group;
• a temperature detector to detect the temperature of the BLU;
• a voltage supplier to supply the plurality of luminous elements with respective driving voltages;
• and
• a controller to control the driving voltages supplied to the plurality of luminous elements.

A method of controlling a back light unit (BLU) having a plurality of luminous elements, the method comprising:

• detecting a temperature of the BLU;
• detecting a brightness of the plurality of luminous elements;
• performing a first adjustment to adjust the driving voltages supplied to the plurality of luminous elements according to the detected temperature;
• and
• performing a second adjustment to adjust the driving voltages supplied to the plurality of luminous elements according to the detected brightness.

A method of controlling a back light unit (BLU) having a plurality of luminous elements, the method comprising:

• detecting a temperature of the BLU;
• detecting a brightness of the plurality of luminous elements;
• performing a first adjustment to adjust driving voltages supplied to the plurality of luminous elements according to the detected temperature;
• and
• performing a second adjustment to adjust driving voltages supplied to the plurality of luminous elements according to the detected brightness.