This study is designed to use a bipolar high voltage for LCD panels to develop a DC-to-DC converter that uses a conventional PWM control Boost boost circuit. The boost circuit designed in this study can convert a single input voltage to four bipolar voltage output levels (± 12V and ± 6V) with only a single external inductor, and can be solved by a dynamic charge algorithm The advantages of the traditional PWM control, the characteristics of this boost circuit can be operated in asymmetric load conditions, fast transient response and light load conditions can still maintain high conversion efficiency , this study has been through the CIC chip off the assembly line and Verification, can effectively reduce the cost of LCD panel production and size.