Packaging method for biological characteristic optical sensor of wearable equipment

Abstract

The invention provides a packaging method for a biological characteristic optical sensor of wearable equipment, and the method comprises the following specific steps: a circuit arrangement step, a wafer welding step, a wire bonding step and a cutting step. The line arrangement is performed around a die bonding function region on a resin substrate copper-clad plate according to the transmitting andreceiving integrated function, and a wafer is welded in the die bonding function region. A chip motor on the wafer is connected with a bonding wire function region on the resin substrate copper-cladplate through the bonding wire, thereby realizing the electrical conduction of the chip. By cutting the resin substrate copper-clad plate into sensor units, each sensor unit includes at least one transmitting window and one receiving window, thereby realizing the integration of transmitting and receiving well, preventing the entire sensor unit from occupying a large space, greatly reducing the space occupancy rate of the sensor and improving the integration. When the sensor unit is mounted on a wearable smart watch or bracelet, the use effect is better.

Description

technical field [0001] The invention relates to the field of optoelectronics, in particular to a packaging method for a biometric optical sensor of a wearable device. Background technique [0002] With the development of technology and the improvement of living standards, people are more and more concerned about their own health and medical measurement methods that can be integrated into so-called wearable gadgets such as watches, smartphones or fitness bands. Interest, which promotes the development of smart health monitoring equipment. The optical approach is economically advantageous because the new technology of high-efficiency LEDs enables more energy-efficient and more compact sensors. At present, optical sensors can directly measure human biological characteristics such as heart rate, blood oxygen saturation, and blood pressure, and are used in modern fitness tracking and health monitoring, so there is a broad market space. [0003] The non-invasive detection of phy...

AI Technical Summary

Problems solved by technology

[0004] For existing optical sensors, in order to obtain a better signal and reduce noise interference, the transmitting and receiving components are separated, resulting in the final module occupying a large space, and there will be problems when installed on a wearable smart watch or bracelet. Some protruding parts, which affect the user experience for smart wear solutions that require close contact with the skin to obtain accurate measurements

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