Today’s Patent – Earphone Module

The said invention (US11632618B1) was invented by Jui-Hsien Chien, patented by USPTO on 16-12-2021. Currently, it stands assigned to Merry Electronics Co Ltd.

The disclosure relates to an earphone module and in particular to an earphone module with a slot antenna. Bluetooth earphones generally have an electric antenna framework, and a relative distance is required to be reserved between the touch panel and the electric antenna to reduce the electric coupling between the antenna and the touch panel, but the area of the touch panel is thereby limited.

In addition, since the electric antenna framework is open-circuited at an end, the electric current there is small and the electric field there is strong, so frequency band deviation is likely to occur due to the human body dielectrics, thereby affecting the antenna efficiency.

An earphone module, including a housing, a circuit board, a feeding conductor, a first grounding conductor, and a second grounding conductor, is provided. The housing includes an insulating housing and a metal ring connected thereto. The metal ring serves as an antenna and includes a feeding end, a first ground end, a second ground end, and a slit that splits the metal ring. The slit is located between the feeding end and the first ground end. The second ground end is located between the feeding end and the slit. The circuit board is located in the insulating housing. A slot is formed between the circuit board and the metal ring. The feeding conductor is connected to the feeding end and the circuit board. The first grounding conductor is connected to the first ground end and the circuit board. The second grounding conductor is connected to the second ground end and the circuit board.