Phome  makers recognize that there is insufficient space on the front of smartphones for a standard capacitive fingerprint sensor and have turned to in-display fingerprint sensors.

At the end of 2016, Synaptics released UnderGlass, an optical solution of fingerprint sensing, which overcomes the limitation that capacitive solutions cannot sense through the glass panel of phones.

Recently, Synaptics has released in-display fingerprint sensing solutions for AMOLED panels.

Goodix recently sent sample products to major mobile phone vendors for testing.

Qualcomm has cooperated with Vivo in developing ultrasonic fingerprint sensing.

FPC of Sweden has just launched ultrasonic fingerprint sensing technology.

In addition to Samsung and LG which make their own AMOLED panels, Chinese smartphone brands such as OPPO, Vivo, Meizu, Gionee, Xiaomi and Huawei will also have chance to embed in-display fingerprint sensor for AMOLED panels in their 2018 models.