公开(公告)号：US11480836B2

公开(公告)日：2022-10-25

申请号：US16864890

申请日：2020-05-01

Applicant: OmniVision Technologies, Inc.

Inventor： Alireza Bonakdar ,  Libo Weng ,  Badrinath Padmanabhan

IPC: G02F1/1362 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343

Abstract: A liquid crystal on silicon device is described. The liquid crystal on silicon device includes a plurality of mirror electrodes, a transparent electrode, a liquid crystal material, and a plurality of microlenses. The plurality of mirror electrodes are arranged periodically to form an array of pixels, each pixel included in the array of pixels configurable to reflect incident light. The transparent electrode is optically aligned with the plurality of mirror electrodes. The liquid crystal material is disposed between the transparent electrode and the plurality of mirror electrodes. The plurality of microlenses are optically aligned with the plurality of mirror electrodes. Each microlens included in the plurality of microlenses is positioned to focus the incident light on a respective one of the plurality of mirror electrodes.

公开(公告)号：US10429699B2

公开(公告)日：2019-10-01

申请号：US15428307

申请日：2017-02-09

Applicant: OmniVision Technologies, Inc.

Inventor： Christopher Morgan Walker ,  Libo Weng ,  Oray Orkun Cellek ,  Ming Zhang ,  Yin Qian ,  Dyson Hsin-Chih Tai ,  Regis Fan

IPC: G02F1/1337 ,  G02F1/1333 ,  G02F1/1362 ,  G09G3/36

Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.

公开(公告)号：US10317733B2

公开(公告)日：2019-06-11

申请号：US15334488

申请日：2016-10-26

Applicant: OmniVision Technologies, Inc.

Inventor： Ming Zhang ,  Yin Qian ,  Libo Weng ,  Oray Orkun Cellek ,  Dyson Hsin-Chih Tai ,  Lequn Liu ,  Dominic Massetti

IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1362

Abstract: An alignment layer for a liquid crystal on silicon (LCOS) display includes a nano-particle layer. In a particular embodiment the nano-particle layer includes a lower nano-layer and an upper nano-layer, each formed onto oxide layers of the LCOS display. In a more particular embodiment, the lower nano-layer and the upper nano-layer are offset printed onto the oxide layers.

公开(公告)号：US20180113336A1

公开(公告)日：2018-04-26

申请号：US15334488

申请日：2016-10-26

Applicant: OmniVision Technologies, Inc.

Inventor： Ming Zhang ,  Yin Qian ,  Libo Weng ,  Oray Orkun Cellek ,  Dyson Hsin-Chih Tai ,  Lequn Liu ,  Dominic Massetti

IPC: G02F1/1337 ,  G02F1/1335 ,  G02F1/1343

CPC classification number: G02F1/1337 ,  G02F1/1303 ,  G02F1/133553 ,  G02F2001/136281 ,  G02F2202/105 ,  G02F2202/36

Abstract: An alignment layer for a liquid crystal on silicon (LCOS) display includes a nano-particle layer. In a particular embodiment the nano-particle layer includes a lower nano-layer and an upper nano-layer, each formed onto oxide layers of the LCOS display. In a more particular embodiment, the lower nano-layer and the upper nano-layer are offset printed onto the oxide layers.

公开(公告)号：US20210341807A1

公开(公告)日：2021-11-04

申请号：US16864890

申请日：2020-05-01

Applicant: OmniVision Technologies, Inc.

Inventor： Alireza Bonakdar ,  Libo Weng ,  Badrinath Padmanabhan

IPC: G02F1/1362 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1337

Abstract: A liquid crystal on silicon device is described. The liquid crystal on silicon device includes a plurality of mirror electrodes, a transparent electrode, a liquid crystal material, and a plurality of microlenses. The plurality of mirror electrodes are arranged periodically to form an array of pixels, each pixel included in the array of pixels configurable to reflect incident light. The transparent electrode is optically aligned with the plurality of mirror electrodes. The liquid crystal material is disposed between the transparent electrode and the plurality of mirror electrodes. The plurality of microlenses are optically aligned with the plurality of mirror electrodes. Each microlens included in the plurality of microlenses is positioned to focus the incident light on a respective one of the plurality of mirror electrodes.

公开(公告)号：US10739646B1

公开(公告)日：2020-08-11

申请号：US16399373

申请日：2019-04-30

Applicant: OmniVision Technologies, Inc.

Inventor： Ming Zhang ,  Yin Qian ,  Libo Weng ,  Dyson H. Tai ,  Chia-Ying Liu ,  Chia-Jung Liu

IPC: G02F1/1337 ,  G02F1/1335 ,  G02F1/1362

Abstract: A reflective semiconductor device includes integrated circuitry disposed in a semiconductor layer. A first plurality of mirrors is formed in a mirror layer over the semiconductor layer, and each of the first plurality of mirrors is spaced apart from one another by at least a uniform width. A thin dielectric film layer covers sidewalls of the first plurality of mirrors and the semiconductor layer in the regions between the spaced apart first plurality of mirrors. A second plurality of mirrors are formed in the mirror layer between the thin dielectric film layer covered sidewalls of the first plurality of mirrors and over the thin dielectric film layer covering the semiconductor layer. Each one of the first and second plurality of mirrors has the uniform width, and is coupled to the integrated circuitry disposed in the semiconductor layer.

公开(公告)号：US10481439B2

公开(公告)日：2019-11-19

申请号：US15357920

申请日：2016-11-21

Applicant: OmniVision Technologies, Inc.

Inventor： Christopher Morgan Walker ,  Libo Weng ,  Oray Orkun Cellek ,  Ming Zhang ,  Yin Qian ,  Dyson Hsin-Chih Tai ,  Regis Fan

IPC: G09G3/36 ,  G02F1/1337 ,  G02F1/137 ,  G02F1/1333

Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.

公开(公告)号：US20180144710A1

公开(公告)日：2018-05-24

申请号：US15357920

申请日：2016-11-21

Applicant: OmniVision Technologies, Inc.

Inventor： Christopher Morgan Walker ,  Libo Weng ,  Oray Orkun Cellek ,  Ming Zhang ,  Yin Qian ,  Dyson Hsin-Chih Tai ,  Regis Fan

IPC: G09G3/36 ,  G02F1/1337 ,  G02F1/137

Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.

公开(公告)号：US20180143498A1

公开(公告)日：2018-05-24

申请号：US15428307

申请日：2017-02-09

Applicant: OmniVision Technologies, Inc.

Inventor： Christopher Morgan Walker ,  Libo Weng ,  Oray Orkun Cellek ,  Ming Zhang ,  Yin Qian ,  Dyson Hsin-Chih Tai ,  Regis Fan

IPC: G02F1/1337

CPC classification number: G02F1/133753 ,  G02F1/1337 ,  G02F1/133711 ,  G02F1/133719 ,  G02F1/133723 ,  G02F1/133734 ,  G02F1/133788 ,  G02F1/136213 ,  G02F2001/133388 ,  G02F2001/133757 ,  G02F2001/133769 ,  G02F2001/133776 ,  G02F2201/50 ,  G02F2201/501 ,  G02F2202/36 ,  G02F2203/01 ,  G09G3/3655 ,  G09G2300/0426 ,  G09G2310/0232

Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.