公开(公告)号：US10296773B2

公开(公告)日：2019-05-21

申请号：US14022058

申请日：2013-09-09

Applicant: Apple Inc.

Inventor： Zhiping Yang ,  Hanfeng Wang

IPC: H03K17/96 ,  G06K9/00

Abstract: A capacitive fingerprint sensor that may be formed of an array of sensing elements. Each capacitive sensing element of the array may register a voltage that varies with the capacitance of a capacitive coupling. A finger may capacitively couple to the individual capacitive sensing elements of the sensor, such that the sensor may sense a capacitance between each capacitive sensing element and the flesh of the fingerprint. The capacitance signal may be detected by sensing the change in voltage on the capacitive sensing element as the relative voltage between the finger and the sensing chip is changed. Alternately, the capacitance signal may be detected by sensing the change in charge received by the capacitive sensing elements as the relative voltage between the finger and the sensing chip is changed.

公开(公告)号：US20190266375A1

公开(公告)日：2019-08-29

申请号：US16412234

申请日：2019-05-14

Applicant: Apple Inc.

Inventor： Zhiping Yang ,  Hanfeng Wang

IPC: G06K9/00

Abstract: A capacitive fingerprint sensor that may be formed of an array of sensing elements. Each capacitive sensing element of the array may register a voltage that varies with the capacitance of a capacitive coupling. A finger may capacitively couple to the individual capacitive sensing elements of the sensor, such that the sensor may sense a capacitance between each capacitive sensing element and the flesh of the fingerprint. The capacitance signal may be detected by sensing the change in voltage on the capacitive sensing element as the relative voltage between the finger and the sensing chip is changed. Alternately, the capacitance signal may be detected by sensing the change in charge received by the capacitive sensing elements as the relative voltage between the finger and the sensing chip is changed.

公开(公告)号：US20150070079A1

公开(公告)日：2015-03-12

申请号：US14022058

申请日：2013-09-09

Applicant: APPLE INC.

Inventor： Zhiping Yang ,  Hanfeng Wang

IPC: H03K17/96

CPC classification number: G06K9/0002

Abstract: A capacitive fingerprint sensor that may be formed of an array of sensing elements. Each capacitive sensing element of the array may register a voltage that varies with the capacitance of a capacitive coupling. A finger may capacitively couple to the individual capacitive sensing elements of the sensor, such that the sensor may sense a capacitance between each capacitive sensing element and the flesh of the fingerprint. The capacitance signal may be detected by sensing the change in voltage on the capacitive sensing element as the relative voltage between the finger and the sensing chip is changed. Alternately, the capacitance signal may be detected by sensing the change in charge received by the capacitive sensing elements as the relative voltage between the finger and the sensing chip is changed.

Abstract translation: 可以由感测元件阵列形成的电容式指纹传感器。 阵列的每个电容感测元件可以记录随电容耦合的电容而变化的电压。 手指可以电容地耦合到传感器的各个电容感测元件，使得传感器可感测每个电容感测元件与指纹的肉体之间的电容。 可以通过感测手指和感测芯片之间的相对电压改变来检测电容感测元件上的电压变化来检测电容信号。 或者，可以通过感测由手指和感测芯片之间的相对电压改变而由电容式感测元件接收的电荷的变化来检测电容信号。