| 发明名称 | LED driver apparatus | ||
| 摘要 | A Light Emitting Diode (LED) driving apparatus and a method of driving a LED backlight unit are provided. An LED driving apparatus includes: an input unit configured to receive a dimming signal, an extension unit configured to extend ON time of the inputted dimming signal, an LED driving unit configured to drive an LED array using the extended dimming signal, and a detection unit configured to detect a degradation of the LED array by measuring a forward voltage between the LED array and the LED driving unit. | ||
| 申请公布号 | US9271369(B2) | 申请公布日期 | 2016.02.23 |
| 申请号 | US201213586059 | 申请日期 | 2012.08.15 |
| 申请人 | Magnachip Semiconductor, Ltd. | 发明人 | Kang Tae-kyoung;Lim Gyo-ho;Kim Hyoung-kyu |
| 分类号 | G09G5/10;G09G3/36;H05B33/08;G09G3/34 | 主分类号 | G09G5/10 |
| 代理机构 | NSIP law | 代理人 | NSIP law |
| 主权项 | 1. A Light Emitting Diode (LED) driving apparatus, comprising: an input unit configured to receive a dimming signal; an extension unit configured to extend an ON time of the dimming signal; an LED driving unit configured to drive an LED array using the extended dimming signal; and a detection unit configured to detect a degradation of the LED array by measuring a forward voltage between the LED array and the LED driving unit, wherein the detection unit is configured to detect the degradation by measuring the forward voltage at a time of a declining edge of the dimming signal. | ||
| 地址 | Cheongju-si KR | ||