Abstract: An electronic device with a fingerprint sensor and a high resolution display adapted to each other includes a display and a fingerprint sensor. The display has display pixels. A transversal pitch P is formed between adjacent two of the display pixels. The fingerprint sensor senses a fingerprint of a finger disposed on or above the display. The fingerprint sensor is a BSI fingerprint sensor and includes a sensing chip and an optical module. The sensing chip has sensing cells each having a transversal dimension A. The optical module disposed between the sensing chip and the display has a magnification power M, where A x M ? P, and A > 5 µm.

Abstract: A vertical cavity surface emitting laser includes an active area, an inner trench, an outer trench, and a first implantation region. The active area includes a first mirror, an active region, a second mirror, and an etch stop layer. The first mirror is formed over a substrate. The active region is formed over the first mirror. The second mirror is formed over the active region. The etch stop layer with an aperture is formed between the active region and the second mirror. The inner trench surrounds the active area in a top view. The outer trench if formed beside the inner trench. The first implantation region is formed below the inner trench.