公开(公告)号：US12205882B2

公开(公告)日：2025-01-21

申请号：US17754028

申请日：2020-09-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kayla C. Niccum ,  Ankit Mahajan ,  Saagar A. Shah ,  Kara A. Meyers ,  Mikhail L. Pekurovsky ,  Jonathan W. Kemling ,  David C. Mercord ,  Pranati Mondkar

IPC: H01L23/498 ,  H01L23/00 ,  H01L23/31

Abstract: A pattern of microchannels is formed on a major surface of a substrate on the side opposite an adhesive surface thereof. Through holes extend through the substrate and are connected to the pattern of microchannels. Solid circuit dies are adhesively bonded to the adhesive surface of the substrate. The contact pads of the solid circuit dies at least partially overlie and face the through holes. Electrically conductive channel traces are formed to electrically connect to the solid circuit dies via the through holes.

公开(公告)号：US11314008B2

公开(公告)日：2022-04-26

申请号：US16629595

申请日：2018-07-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Yongshang Lu ,  David C. Mercord ,  Brian W. Ostlie

IPC: F21V8/00

Abstract: An optical system includes a lightguide having opposing top and bottom major surfaces. A round through opening extends between the two surfaces of the lightguide. An elongated channel is formed in one of the surfaces and at least partially surrounds and is substantially concentric with the opening. The channel has a depth (d) that varies along its length. Light extractors extract light that would otherwise propagate within and along the lightguide. The features of the lightguide can be varied to optimize performance of the lightguide for various purposes.

公开(公告)号：US20200233135A1

公开(公告)日：2020-07-23

申请号：US16632471

申请日：2018-08-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Yongshang Lu ,  David C. Mercord ,  Brian W. Ostlie

IPC: F21V8/00

Abstract: An optical system comprises a lightguide having an elongated recess formed therein. The recess divides the lightguide into a first lightguide section a second larger lightguide section. Light extractors are disposed in the second, but not the first, lightguide section for extracting light that would otherwise propagate within and along the second lightguide section via total internal reflection (TIR). The depth of the recess varies along its length. The inclusion of a recess having a depth that varies along its length provides design flexibility in the number and location of light source(s) used by the optical system.

公开(公告)号：US20220187500A1

公开(公告)日：2022-06-16

申请号：US17593069

申请日：2020-03-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Steven T. Swartz ,  Keith R. Jacobs ,  David C. Mercord ,  Michael S. Schrack

IPC: G02B1/04 ,  C08J5/18 ,  B23K26/402

Abstract: Overlay is described. In particular, an overlay with integral tabs for a display is described. The integral tabs is made by a laser machining process, to obtain the required thickness of the tabs. The overlay described herein is particularly suitable for display screens of devices such as laptop, tablet computers, cellular phones etc.

公开(公告)号：US20220078373A1

公开(公告)日：2022-03-10

申请号：US17529673

申请日：2021-11-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Brent A. Hedding ,  David C. Mercord ,  Brian W. Ostlie

IPC: H04N7/14 ,  G06K9/00 ,  H04N5/232 ,  H04N5/225

Abstract: An optical imaging system including an elongated lightguide having pluralities of first and second light extractors forming respective first and second patterns along the length of the lightguide is described. Light extracted by the first light extractors exit the lightguide primarily along a first direction toward a target location, and light extracted by the second light extractors exit the lightguide primarily along a second direction different from the first direction. The optical imaging system includes a first reflector for receiving light exiting the lightguide primarily along the second direction and reflecting the received light toward the target location. The first reflector forms a first virtual image of the second pattern behind the first reflector. The first pattern and the first virtual image are visible to a viewer viewing the optical imaging system from the target location.

公开(公告)号：US20210325593A1

公开(公告)日：2021-10-21

申请号：US17159371

申请日：2021-01-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Yongshang Lu ,  David C. Mercord ,  Brian W. Ostlie

IPC: F21V8/00

Abstract: A unitary lightguide including a first lightguide section extending along a first direction and a second lightguide section extending along a second direction is described. The second lightguide section includes a plurality of light extractors for extracting light that would otherwise propagate within and along the second lightguide section. The unitary lightguide includes a boundary region disposed between and joining the first and second lightguide sections and including a plurality of spaced apart light redirecting features. Each light redirecting feature includes a first portion extending substantially parallel to the first direction, and a second portion extending from proximate the first end of the first portion toward the second lightguide section and making an angle with the first portion in a range from about 10 degrees to about 70 degrees.

公开(公告)号：US10509157B2

公开(公告)日：2019-12-17

申请号：US15751213

申请日：2016-08-25

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Brent A. Hedding ,  David C. Mercord ,  Brian W. Ostlie ,  David A. Ender

IPC: F21V7/04 ,  F21V8/00

Abstract: Lightguides including pixelated images, and methods of making the lightguides are provided. The lightguides include an image formed on a major side which is illuminated for directly viewing. The image includes an elongated portion being pixelated into an array of pixels. Each of the pixels includes a single light extracting structure adapted to receive the propagating light within the lightguide along the optical axis and extract the received light transversely out of the lightguide.

公开(公告)号：US11199654B2

公开(公告)日：2021-12-14

申请号：US16632471

申请日：2018-08-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Yongshang Lu ,  David C. Mercord ,  Brian W. Ostlie

IPC: F21V8/00

Abstract: An optical system comprises a lightguide having an elongated recess formed therein. The recess divides the lightguide into a first lightguide section a second larger lightguide section. Light extractors are disposed in the second, but not the first, lightguide section for extracting light that would otherwise propagate within and along the second lightguide section via total internal reflection (TIR). The depth of the recess varies along its length. The inclusion of a recess having a depth that varies along its length provides design flexibility in the number and location of light source(s) used by the optical system.

公开(公告)号：US11125929B2

公开(公告)日：2021-09-21

申请号：US16463078

申请日：2018-01-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Brian W. Ostlie ,  Brent A. Hedding ,  Charlie C. Ho ,  Yongshang Lu ,  Jay M. Jennen ,  David C. Mercord ,  Johnnie L. Williams

IPC: F21V8/00

Abstract: A display system including a lightguide and first and second reflective layers disposed on opposite sides of the lightguide is provided. The lightguide has opposing first and second major surfaces and includes a light extraction pattern for extracting light that would otherwise be confined and propagate within the lightguide primarily by total internal reflection. Light extracted by the light extraction pattern exits the lightguide through at least one of the first and second major surfaces of the lightguide. Each of the first and second reflective layers has an average specular reflectance of at least 50% in a predetermined wavelength range. The light extraction pattern may be repeatedly imaged by the first and second reflective layers to produce three-dimensional stacked images of the light extraction pattern.

公开(公告)号：US20200073041A1

公开(公告)日：2020-03-05

申请号：US16466054

申请日：2017-11-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Brent A. Hedding ,  David C. Mercord ,  Brian W. Ostlie

IPC: F21V8/00

Abstract: An optical imaging system (100) including an elongated lightguide (105) having pluralities of first and second light extractors (110) forming respective first and second patterns along the length of the lightguide is described. Light extracted by the first light extractors exit the lightguide primarily along a first direction toward a target location (150), and light extracted by the second light extractors exit the lightguide primarily along a second direction different from the first direction. The optical imaging system includes a first reflector (114) for receiving light exiting the lightguide primarily along the second direction and reflecting the received light toward the target location. The first reflector forms a first virtual image (132) of the second pattern behind the first reflector. The first pattern and the first virtual image are visible to a viewer (152) viewing the optical imaging system from the target location.