公开(公告)号：US20190006536A1

公开(公告)日：2019-01-03

申请号：US16042020

申请日：2018-07-23

Applicant: Texas Instruments Incorporated

Inventor： James Becker ,  Henry Litzmann Edwards

IPC: H01L31/0232 ,  H01L31/103 ,  H01L31/02

Abstract: An optical sensor includes a semiconductor substrate having a first conductive type. The optical sensor further includes a photodiode disposed on the semiconductor substrate and a metal layer. The photodiode includes a first semiconductor layer having the first conductive type and a second semiconductor layer, formed on the first semiconductor layer, including a plurality of cathodes having a second conductive type. The first semiconductor layer is configured to collect photocurrent upon reception of incident light. The cathodes are configured to be electrically connected to the first semiconductor layer and the second semiconductor layer is configured to, based on the collected photocurrent, to track the incident light. The metal layer further includes a pinhole configured to collimate the incident light, and the plurality of cathodes form a rotational symmetry of order n with respect to an axis of the pinhole.

公开(公告)号：US11563130B2

公开(公告)日：2023-01-24

申请号：US16867309

申请日：2020-05-05

Applicant: Texas Instruments Incorporated

Inventor： James Becker ,  Henry Litzmann Edwards

IPC: H01L31/0232 ,  H01L31/02 ,  H01L31/103

Abstract: An optical sensor includes a semiconductor substrate having a first conductive type. The optical sensor further includes a photodiode disposed on the semiconductor substrate and a metal layer. The photodiode includes a first semiconductor layer having the first conductive type and a second semiconductor layer, formed on the first semiconductor layer, including a plurality of cathodes having a second conductive type. The first semiconductor layer is configured to collect photocurrent upon reception of incident light. The cathodes are configured to be electrically connected to the first semiconductor layer and the second semiconductor layer is configured to, based on the collected photocurrent, to track the incident light. The metal layer further includes a pinhole configured to collimate the incident light, and the plurality of cathodes form a rotational symmetry of order n with respect to an axis of the pinhole.

公开(公告)号：US20200266306A1

公开(公告)日：2020-08-20

申请号：US16867309

申请日：2020-05-05

Applicant: Texas Instruments Incorporated

Inventor： James Becker ,  Henry Litzmann Edwards

IPC: H01L31/0232 ,  H01L31/103 ,  H01L31/02

Abstract: An optical sensor includes a semiconductor substrate having a first conductive type. The optical sensor further includes a photodiode disposed on the semiconductor substrate and a metal layer. The photodiode includes a first semiconductor layer having the first conductive type and a second semiconductor layer, formed on the first semiconductor layer, including a plurality of cathodes having a second conductive type. The first semiconductor layer is configured to collect photocurrent upon reception of incident light. The cathodes are configured to be electrically connected to the first semiconductor layer and the second semiconductor layer is configured to, based on the collected photocurrent, to track the incident light. The metal layer further includes a pinhole configured to collimate the incident light, and the plurality of cathodes form a rotational symmetry of order n with respect to an axis of the pinhole.

公开(公告)号：US10069023B2

公开(公告)日：2018-09-04

申请号：US14157891

申请日：2014-01-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： James Becker ,  Henry Litzmann Edwards

IPC: H01L27/148 ,  H01L31/00 ,  H01L31/0232 ,  H01L31/02 ,  H01L31/103

Abstract: An optical sensor includes a semiconductor substrate having a first conductive type. The optical sensor further includes a photodiode disposed on the semiconductor substrate and a metal layer. The photodiode includes a first semiconductor layer having the first conductive type and a second semiconductor layer, formed on the first semiconductor layer, including a plurality of cathodes having a second conductive type. The first semiconductor layer is configured to collect photocurrent upon reception of incident light. The cathodes are configured to be electrically connected to the first semiconductor layer and the second semiconductor layer is configured to, based on the collected photocurrent, to track the incident light. The metal layer further includes a pinhole configured to collimate the incident light, and the plurality of cathodes form a rotational symmetry of order n with respect to an axis of the pinhole