论文部分内容阅读
提到LED驱动,大家会想到什么?小到手机的屏幕背光、键盘背光、闪光灯或者电筒灯(手机上照明用的),LED照明,大到LCDTV背光等等。对于屏幕背光而言,屏幕大小不同就需要不同数目的LED,例如,3英寸屏幕一般需要的背光LED数量是2个￣4个。屏幕要达到显示的亮度均衡就要让这些不同数量的LED保证发光一致,而LED的发光亮度是与其驱动电流相关,因此,LED驱动需要保证流经LED的电流一致。
Mention LED driver, what would you think of? As small as the phone’s screen backlight, keyboard backlight, flash or flashlight (mobile phone lighting), LED lighting, large LCDTV backlight and so on. For the screen backlight, the screen size requires a different number of different LED, for example, 3-inch screen generally need to backlight the number of LED is 2 ~ 4. The brightness of the screen to achieve a balanced display will allow these different numbers of LEDs to ensure consistent light, and LED light emission brightness is related to its drive current, therefore, LED drivers need to ensure that the current flowing through the LED consistent.