公开(公告)号：US20210234076A1

公开(公告)日：2021-07-29

申请号：US16307137

申请日：2018-11-02

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chi Ho Kwok ,  Chi Hin Wong ,  Wing Yin Yung ,  Chenmin Liu

IPC: H01L33/50 ,  C09J11/04 ,  C09J4/00 ,  C09J133/12 ,  C09J5/00 ,  C09K11/88

Abstract: A barrier free quantum dot particles film includes a free standing layer comprising shielded quantum dot particles; wherein the shielded quantum dot particles are formed by shielding quantum dot particles by at least one shielding method; wherein the shielded quantum dot particles are characterized in resisting at least one condition selected from the group consisting of high temperature, high humidity and water; and wherein the shielded quantum dot particles are dispersed in an acrylate adhesive. A method of fabricating a barrier free quantum dot particles free standing film is also disclosed. The method of fabrication of shielded quantum dot particles film on a light emitting diode (LED) lens is also disclosed.

公开(公告)号：US11365347B2

公开(公告)日：2022-06-21

申请号：US16885267

申请日：2020-05-28

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chi Hin Wong ,  Wing Yin Yung ,  Sze Chun Yiu ,  Chi Ho Kwok ,  Chenmin Liu

IPC: C09K11/02 ,  C09K11/06 ,  B82Y40/00 ,  B82Y20/00

Abstract: A method for preparation of perovskite quantum dot (PQD)/polymer/ceramic ternary complex includes encapsulation of bifunctional coating including ceramic and polymer. Encapsulation sequence of polymer and ceramic may be altered according to the application. In one scenario, the perovskite quantum dots may be protected with ceramic coating first and further coated with polymer to obtain the perovskite/ceramic/polymer ternary complex. In another scenario, the perovskite quantum dots may be protected with polymer coating first and followed by ceramic coating to obtain the perovskite/polymer/ceramic ternary complex. The PQD ternary complex may provide synergistic effect on improvement of stability towards heat and moisture when compared to existing technology.

公开(公告)号：US11121290B2

公开(公告)日：2021-09-14

申请号：US16307137

申请日：2018-11-02

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chi Ho Kwok ,  Chi Hin Wong ,  Wing Yin Yung ,  Chenmin Liu

IPC: C09K11/02 ,  C09K11/88 ,  C08K3/30 ,  C08G77/392 ,  C09K11/70 ,  H01L33/50 ,  C09J4/00 ,  C09J5/00 ,  C09J11/04 ,  C09J133/12 ,  B82Y20/00 ,  B82Y40/00

Abstract: A barrier free quantum dot particles film includes a free standing layer comprising shielded quantum dot particles; wherein the shielded quantum dot particles are formed by shielding quantum dot particles by at least one shielding method; wherein the shielded quantum dot particles are characterized in resisting at least one condition selected from the group consisting of high temperature, high humidity and water; and wherein the shielded quantum dot particles are dispersed in an acrylate adhesive. A method of fabricating a barrier free quantum dot particles free standing film is also disclosed. The method of fabrication of shielded quantum dot particles film on a light emitting diode (LED) lens is also disclosed.

公开(公告)号：US11435620B2

公开(公告)日：2022-09-06

申请号：US17137399

申请日：2020-12-30

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Sze Chun Yiu ,  Wing Yin Yung ,  Chi Hin Wong ,  Chi Ho Kwok ,  Chenmin Liu

IPC: G02F1/1335 ,  G02F1/1368 ,  C09K11/02 ,  C09K11/88 ,  C09K11/56 ,  F21V8/00

Abstract: A quantum dot-based color display includes a backlight unit with a light source and light source distribution layer and a photo down-conversion light emissive layer. The photo down-conversion layer has populations of light-emitting Group II-VI core-shell structure quantum dots, the core having an excess amount of a Group II component in a ratio to a Group VI component of approximately 6:1 or greater. The quantum dots include an organic fraction of approximately 20 weight percent to approximately 45 weight percent, the organic fraction including ligands bound to quantum dot surfaces in an as-deposited state and including one or more long-chain fatty acids. Non-barrier polymer films are positioned on either side of the photo down conversion light emissive layer which exhibits photo stability at a light intensity of at least 4000 W/m2. A display panel cooperates with the back light unit to form the display.

公开(公告)号：US20210343909A1

公开(公告)日：2021-11-04

申请号：US17377457

申请日：2021-07-16

Applicant: Nano and Advanced Materials Institute Limited

Inventor： Chi Ho Kwok ,  Chi Hin Wong ,  Wing Yin Yung ,  Chenmin Liu

IPC: H01L33/50 ,  C09J4/00 ,  C09J5/00 ,  C09J11/04 ,  C09J133/12 ,  C09K11/88

Abstract: A barrier free quantum dot particles film includes a free standing layer comprising shielded quantum dot particles; wherein the shielded quantum dot particles are formed by shielding quantum dot particles by at least one shielding method; wherein the shielded quantum dot particles are characterized in resisting at least one condition selected from the group consisting of high temperature, high humidity and water; and wherein the shielded quantum dot particles are dispersed in an acrylate adhesive. A method of fabricating a barrier free quantum dot particles free standing film is also disclosed. The method of fabrication of shielded quantum dot particles film on a light emitting diode (LED) lens is also disclosed.