| 发明名称 | LED driver apparatus | ||
| 摘要 | A Light Emitting Diode (LED) driver apparatus is provided. The LED driver apparatus includes: a Pulse Width Modulation (PWM) signal generator configured to generate a PWM signal, a DC-DC converter configured to provide a driving voltage of a plurality of LED arrays by using the generated PWM signal, and a sensor configured to determine whether at least one LED array among the plurality of LED arrays is in an open state in response to the driving voltage being higher than or equal to a preset first reference voltage, and the preset first reference voltage is higher than the driving voltage applied when the plurality of LED arrays are each in a working state. | ||
| 申请公布号 | US8860320(B2) | 申请公布日期 | 2014.10.14 |
| 申请号 | US201213586089 | 申请日期 | 2012.08.15 |
| 申请人 | Magnachip Semiconductor, Ltd. | 发明人 | Kang Tae-kyoung;Lim Chang-sik;Ko Eun-ah;Ryu Beom-seon |
| 分类号 | H05B37/03;H05B33/08;H05B37/02;G09G3/34 | 主分类号 | H05B37/03 |
| 代理机构 | NSIP Law | 代理人 | NSIP Law |
| 主权项 | 1. A Light Emitting Diode (LED) driver apparatus comprising: a Pulse Width Modulation (PWM) signal generator configured to generate a PWM signal; a DC-DC converter configured to provide a driving voltage to LED arrays using the generated PWM signal; and a sensor configured to determine whether an LED array among the LED arrays is in an open state based on the driving voltage being higher than or equal to a preset first reference voltage, wherein the preset first reference voltage is higher than the driving voltage in response to the LED arrays being in a working state. | ||
| 地址 | Cheongju-si KR | ||