![LIGHT EMITTING DIODE DRIVING CIRCUIT, AND DISPLAY DEVICE HAVING THE SAME](/abs-image/US/2012/05/24/US20120126712A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: LIGHT EMITTING DIODE DRIVING CIRCUIT, AND DISPLAY DEVICE HAVING THE SAME
- 专利标题(中):发光二极管驱动电路,以及具有该发光二极管驱动电路的显示装置
- 申请号:US13240616 申请日:2011-09-22
- 公开(公告)号:US20120126712A1 公开(公告)日:2012-05-24
- 发明人: Yong-Hun KIM
- 申请人: Yong-Hun KIM
- 优先权: KR10-2010-0116934 20101123
- 主分类号: H05B37/02
- IPC分类号: H05B37/02
摘要:
Provided are an LED driving circuit capable of preventing distortion of LED currents and having a high operating speed, and a display device including the LED driving circuit. The LED driving circuit includes a current driving circuit, a dynamic headroom controller and a power supply circuit. The current driving circuit controls current signals flowing through LED strings in response to a first control signal that includes information of an LED current and a current-driving-circuit enabling signal. The dynamic headroom controller generates a dynamic headroom control signal having a voltage level that changes according to a logic state of the current-driving-circuit enabling signal. The power supply circuit generates an LED driving voltage that changes according to the dynamic headroom control signal.
摘要(中):
提供一种能够防止LED电流变形并具有高工作速度的LED驱动电路,以及包括LED驱动电路的显示装置。 LED驱动电路包括电流驱动电路,动态裕量控制器和电源电路。 电流驱动电路响应于包括LED电流和电流驱动电路使能信号的信息的第一控制信号来控制流过LED串的电流信号。 动态裕量控制器产生具有根据电流驱动电路使能信号的逻辑状态改变的电压电平的动态裕量控制信号。 电源电路产生根据动态余量控制信号而变化的LED驱动电压。
IPC结构图谱:
H | 电学 |
--H05 | 其他类目不包含的电技术 |
----H05B | 电热;其他类目不包含的电照明 |
------H05B37/00 | 用于一般电光源的电路装置 |
--------H05B37/02 | .控制 |