Guojia Liu

Guojia Liu is a prominent inventor based in Hangzhou, China. He has made significant contributions to the field of semiconductor technology, holding a total of 8 patents. His work focuses on innovative solutions for integrated circuits and LED driving circuits.

Latest Patents

Among his latest patents is an integrated circuit for a dimmable light-emitting diode driving circuit and driving method. This method involves detecting a voltage across an electrolytic capacitor in the LED driving circuit. It determines whether the voltage is less than a predetermined value and charges the electrolytic capacitor by an auxiliary circuit when necessary. This innovation reduces the time required for the voltage to rise to a start-up voltage of an LED load. Another notable patent is a zero-crossing detection circuit. This circuit includes a first detection circuit that detects current through a main transistor of a switching power supply and generates a voltage sense signal. It also features a second detection circuit that detects quasi-resonance in the main circuit and generates pulse signals accordingly.

Career Highlights

Guojia Liu is currently employed at Silergy Semiconductor Technology (Hangzhou) Ltd. His role at the company allows him to apply his expertise in semiconductor innovations and contribute to the development of cutting-edge technologies.

Collaborations

He has collaborated with notable coworkers such as Jian Deng and Xiaoru Xu, further enhancing the innovative environment at Silergy Semiconductor Technology.

Conclusion

Guojia Liu's contributions to semiconductor technology and his innovative patents demonstrate his commitment to advancing the field. His work continues to impact the industry positively, showcasing the importance of innovation in technology.