(EN) The invention discloses a sensor, a preparation method of the sensor, a panel and a recognition device. The sensor comprises a substrate, a first electrode layer, a second electrode layer and a piezoelectric layer, wherein the first electrode layer is arranged on the substrate; the second electrode layer is arranged on the first electrode layer and far away from the substrate; the piezoelectric layer is arranged between the first electrode layer and the second electrode layer and coupled with each of the first electrode layer and the second electrode layer; and positive projection, on the substrate, of the piezoelectric layer is gradually decreased from the side far away from the substrate to the side close to the substrate. According to the sensor provided by the invention, the preparation difficulty is reduced and the service life is prolonged.
(ZH) 一种传感器及其制备方法、面板、识别装置，该传感器包括：衬底、设置于所述衬底上的第一电极层、设置于所述第一电极层远离所述衬底侧的第二电极层、设置于所述第一电极层和所述第二电极层之间且分别与所述第一电极层和第二电极层耦接的压电层，其中：所述压电层从远离所述衬底的一侧至靠近所述衬底的一侧在所述衬底上的正投影依次减小。本发明一实施例提供的传感器，降低了制备难度，提高了寿命。
