The key component that connects the whole circuit unit of the mobile phone to each other is the electronic connector, which can realize the connection of wires, cables, printed circuit boards and electronic components. According to the function of the internal and external wiring, the interconnection can be divided into 5 levels.

5 levels of internal and external connection of electronic equipment

1. Chip package internal connection

2.IC package pin and PCB board connection: IC socket

3. Connection of printed circuit to conductor or printed plate: printed circuit connector

4. Connection between backplanes: cabinet connector

5. Connection between devices: circular connector

The board-to-board connector, also known as BTB connector, is currently mainly used in mobile phone display, main and auxiliary boards, fingerprint identification, speakers and headphones. The iphoneXS machine uses 15 pairs and the Android machine uses about 10 pairs.

BTB connector with its high frequency, high stability, small size, easy to plug and unplug and other advantages, will become the mainstream connection mode of smart phones in the future, it is expected that the future demand will be with the increase of mobile phone internal function module and the popularity of wearable devices, BTB connector application will be more extensive.

At present, the development direction of smart phones focuses on multi-penetration, 5GRF, motors and thinness, while wearable devices focus on shipments of VR, AR and smart watches. In addition, the requirements for high-speed and high-frequency transmission shielding performance of connectors are improved, which is expected to enable BTB connectors to enjoy the dividends of rising volume and price.

Why is the BTB connector the mainstream way to connect smartphones?

According to the shape can be divided into external parts and internal parts, internal connectors can be divided into board-to-board, line-to-board, line-to-line and other forms.

The external connector includes an earphone interface, a USB connector, a SIM card connector, a memorycard connector, an antenna, an RF connector, and the like.

Due to the increasing number of smart phone function modules, the number of connectors used in mobile phones has increased from about 12 to more than 20 connectors in 4G smart phones.

Market space performance

The increased penetration of multi-camera technology will drive the market demand for camera-related connectors, and it is expected that the three-camera and four-camera design will add 1 to 3 BTB connectors to a single phone.

The number of 5G mobile phone antennas will increase from the current 2 or 4 to 8 or 16, increasing the BTB connector of a mobile phone by 1-2 pairs.

For mobile phones carrying pressure-sensitive buttons, the flexible circuit board fixes the pressure-sensitive buttons through the BTB connector, which is expected to increase the number of BTB connectors for a single mobile phone by about 2 pairs.