文章提供了一种背光模式转换电路，用于LED液晶显示装置，包括PWM控制电路和电流控制电路两部分。通过文中的电路设计方案，可以实现对背光的控制，完成LED液晶显示装置显示模式的切换，满足用户在多种显示模式下的观看需求。

This paper provides a pattern conversion of backlight circuit applied LED liquid crystal display (LCD) device, which include the PWM control circuit and current control circuit. This design can control the backlight of the device, while it is complete the switchover of the LCD device, which can cater to the need of users when the device is in a variety of mode.