| 发明名称 | Back light unit and display device including the same | ||
| 摘要 | A backlight unit includes a DC-DC converter; a voltage control unit which controls output voltage of the DC-DC converter; a plurality of unit light emitting diode arrays; and current deviation compensating unit in connection with input terminals of the plurality of unit light emitting diode arrays. The current deviation compensating unit receives the controlled voltage of the voltage control unit and transfers a feedback signal to the voltage control unit based on the received voltage, and actively compensates a current deviation generated by electrical characteristics of the plurality of unit light emitting diode arrays and transfers the compensated current deviation to the input terminals of the plurality of unit light emitting diode arrays. | ||
| 申请公布号 | US9030459(B2) | 申请公布日期 | 2015.05.12 |
| 申请号 | US201113240228 | 申请日期 | 2011.09.22 |
| 申请人 | Samsung Display Co., Ltd. | 发明人 | Jang Jin-Won;Choi Min-Soo;Kwon Young Sup |
| 分类号 | G09G5/00;H05B33/08;G09G3/34;G09G3/36 | 主分类号 | G09G5/00 |
| 代理机构 | Cantor Colburn LLP | 代理人 | Cantor Colburn LLP |
| 主权项 | 1. A backlight unit, comprising: a DC-DC converter; a voltage control unit which controls output voltage of the DC-DC converter; a plurality of unit light emitting diode arrays; and a current deviation compensating unit including a plurality of unit circuits in connection with input terminals of the plurality of unit light emitting diode arrays, respectively, wherein the current deviation compensating unit: receives the controlled voltage of the voltage control unit and transfers a feedback signal to the voltage control unit based on the received voltage, andactively compensates a current deviation generated by electrical characteristics of the plurality of unit light emitting diode arrays and transfers the compensated current deviation to the input terminals of the plurality of unit light emitting diode arrays, each of the plurality of unit circuits includes a unit circuit transistor and a unit circuit diode, and an input terminal of the unit circuit transistor receives an input voltage from an input terminal of the current deviation compensating unit, an output terminal of the unit circuit transistor is in direct connection with an anode of the unit circuit diode and an input terminal of a unit light emitting diode array. | ||
| 地址 | KR | ||