| 发明名称 | Drive voltage generation circuit for light emitting diode display device and method for driving the same | ||
| 摘要 | A drive voltage generation circuit for an LED display device capable of increasing the input voltage range thereof is disclosed. The drive voltage generation circuit includes a booster that boosts an input voltage from an external source, to generate a boosted voltage, a protection switching element that controls whether or not the boosted voltage generated from the booster is to be output, in accordance with a switch control signal, a protection circuit that compares a level of the boosted voltage output from the booster via the protection switching element with a predetermined threshold voltage, selects one of a high voltage and a low voltage, based on a result of the comparison, and outputs the selected voltage as the switch control signal, and a discharger that discharges a low voltage node, to which the low voltage is applied. | ||
| 申请公布号 | US8988007(B2) | 申请公布日期 | 2015.03.24 |
| 申请号 | US201213705931 | 申请日期 | 2012.12.05 |
| 申请人 | LG Display Co., Ltd. | 发明人 | Kim Byeong-Hee |
| 分类号 | H05B37/02;G09G3/32;H05B33/08 | 主分类号 | H05B37/02 |
| 代理机构 | Brinks Gilson & Lione | 代理人 | Brinks Gilson & Lione |
| 主权项 | 1. A drive voltage generation circuit for a light emitting diode (LED) display device comprising: a booster that boosts an input voltage from an external source, to generate a boosted voltage; a protection switching element that controls whether or not the boosted voltage generated from the booster is to be output, in accordance with a switch control signal; a protection circuit that compares a level of the boosted voltage output from the booster via the protection switching element with a predetermined threshold voltage, selects one of a high voltage and a low voltage, based on a result of the comparison, and outputs the selected voltage as the switch control signal; and a discharger that discharges a low voltage node, to which the low voltage is applied. | ||
| 地址 | Seoul KR | ||