| 发明名称 |
Overvoltage Protection Method for Backlight Driver |
| 摘要 |
An overvoltage protection method for backlight driver includes: providing an LCD device having 2D and 3D modes, comprising a backlight driver comprising a constant current supplying chip and a dimming control coupled to the constant current supplying chip, the constant current supply chip applying a first overvoltage protection level and a second overvoltage protection level as a overvoltage protection level; detecting a signal of the dimming control by using the constant current flow supplying chip, and applying the first overvoltage protection level as the overvoltage protection level based on the signal of the dimming control when the LCD device is in the 2D mode; and detecting the signal of the dimming control by using the constant current flow supplying chip, and applying the second overvoltage protection level as the overvoltage protection level based on the signal of the dimming control when the LCD device is in the 3D mode. |
| 申请公布号 |
US2014204492(A1) |
申请公布日期 |
2014.07.24 |
| 申请号 |
US201313985916 |
申请日期 |
2013.02.06 |
| 申请人 |
Shenzhen China Star Optoelectronics Technology Co. Ltd. |
发明人 |
Hu Anle;Li Fei |
| 分类号 |
H02H9/04 |
主分类号 |
H02H9/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An overvoltage protection method for a backlight driver, comprising following steps:
Step 100: providing a liquid crystal display (LCD) device having 2D and 3D modes, comprising a backlight driver comprising a constant current supplying chip and a dimming control coupled to the constant current supplying chip, the constant current supply chip applying a first overvoltage protection level and a second overvoltage protection level as a overvoltage protection level, and the second overvoltage protection level being higher than the first overvoltage protection level; Step 200: detecting a signal of the dimming control by using the constant current flow supplying chip, and applying the first overvoltage protection level as the overvoltage protection level of the backlight driver based on the signal of the dimming control when the LCD device is working in the 2D mode; and Step 300: detecting the signal of the dimming control by using the constant current flow supplying chip, and applying the second overvoltage protection level as the overvoltage protection level of the backlight driver based on the signal of the dimming control when the LCD device is working in the 3D mode. |
| 地址 |
Shenzhen, Guangdong CN |
