公开(公告)号：US11750906B2

公开(公告)日：2023-09-05

申请号：US17558199

申请日：2021-12-21

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Gang Chen ,  Yuanwei Zheng ,  Qin Wang ,  Cunyu Yang ,  Guannan Chen ,  Duli Mao ,  Dyson H. Tai ,  Lindsay Alexander Grant

IPC: H04N23/55 ,  G02B5/20 ,  G02B7/00 ,  H04N23/54 ,  G02B3/00 ,  H01L27/146

CPC classification number: H04N23/55 ,  G02B5/201 ,  G02B7/006 ,  H04N23/54

Abstract: An image sensor includes a substrate. An array of photodiodes is disposed in the substrate. A plurality of spacers is arranged in a spacer pattern. At least one spacer of the plurality of spacers has an aspect ratio of 18:1 or greater. A buffer layer is disposed between the substrate and the spacer pattern. An array of color filters is disposed in the spacer pattern.

公开(公告)号：US11245823B2

公开(公告)日：2022-02-08

申请号：US16539931

申请日：2019-08-13

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Gang Chen ,  Yuanwei Zheng ,  Qin Wang ,  Cunyu Yang ,  Guannan Chen ,  Duli Mao ,  Dyson H. Tai ,  Lindsay Alexander Grant

IPC: H04N5/225 ,  G02B7/00 ,  G02B5/20 ,  G02B3/00 ,  H01L27/146

Abstract: An image sensor includes a substrate. An array of photodiodes is disposed in the substrate. A plurality of spacers is arranged in a spacer pattern. At least one spacer of the plurality of spacers has an aspect ratio of 18:1 or greater. A buffer layer is disposed between the substrate and the spacer pattern. An array of color filters is disposed in the spacer pattern.

公开(公告)号：US20210051250A1

公开(公告)日：2021-02-18

申请号：US16539931

申请日：2019-08-13

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Gang Chen ,  Yuanwei Zheng ,  Qin Wang ,  Cunyu Yang ,  Guannan Chen ,  Duli Mao ,  Dyson H. Tai ,  Lindsay Alexander Grant

IPC: H04N5/225 ,  G02B5/20 ,  G02B7/00

Abstract: An image sensor includes a substrate. An array of photodiodes is disposed in the substrate. A plurality of spacers is arranged in a spacer pattern. At least one spacer of the plurality of spacers has an aspect ratio of 18:1 or greater. A buffer layer is disposed between the substrate and the spacer pattern. An array of color filters is disposed in the spacer pattern.

公开(公告)号：US20220116516A1

公开(公告)日：2022-04-14

申请号：US17558199

申请日：2021-12-21

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Gang Chen ,  Yuanmei Zheng ,  Qin Wang ,  Cunyu Yang ,  Guannan Chen ,  Duli Mao ,  Dyson H. Tai ,  Lindsay Alexander Grant

IPC: H04N5/225 ,  G02B7/00 ,  G02B5/20

Abstract: An image sensor includes a substrate. An array of photodiodes is disposed in the substrate. A plurality of spacers is arranged in a spacer pattern. At least one spacer of the plurality of spacers has an aspect ratio of 18:1 or greater. A buffer layer is disposed between the substrate and the spacer pattern. An array of color filters is disposed in the spacer pattern.

公开(公告)号：US10964738B2

公开(公告)日：2021-03-30

申请号：US16149544

申请日：2018-10-02

Applicant: OmniVision Technologies, Inc.

Inventor： Gang Chen ,  Yuanwei Zheng ,  Qin Wang ,  Cunyu Yang ,  Guannan Chen ,  Duli Mao ,  Dyson Tai ,  Lindsay Grant ,  Eric Webster ,  Sing-Chung Hu

IPC: H01L27/146 ,  H04N5/378 ,  H04N9/04

Abstract: An image sensor includes one or more photodiodes disposed in a semiconductor material to receive image light and generate image charge, and a floating diffusion to receive the image charge from the one or more photodiodes. One or more transfer transistors is coupled to transfer image charge in the one or more photodiodes to the floating diffusion, and a source follower transistor is coupled to amplify the image charge in the floating diffusion. The source follower includes a gate electrode (coupled to the floating diffusion), source and drain electrodes, and an active region disposed in the semiconductor material between the source and drain electrodes. A dielectric material is disposed between the gate electrode and the active region and has a first thickness and a second thickness. The second thickness is greater than the first thickness, and the second thickness is disposed closer to the drain electrode than the first thickness.