公开(公告)号：US20220291551A1

公开(公告)日：2022-09-15

申请号：US17650856

申请日：2022-02-14

Applicant: Lextar Electronics Corporation

Inventor： Yi-Ting TSAI ,  Hung-Chia WANG ,  Chia-Chun HSIEH ,  Pei-Cong YAN ,  Hung-Chun TONG ,  Yu-Chun LEE ,  Tzong-Liang TSAI

IPC: G02F1/1335 ,  G02F1/13357

Abstract: A wavelength conversion material comprises a luminous core and a covering layer. The luminous core comprises a quantum dot or a fluorescent powder. The covering layer covers the luminous core. The covering layer is an amorphous material, and an outer surface of the covering layer has at least one sharp corner.

公开(公告)号：US20240150652A1

公开(公告)日：2024-05-09

申请号：US18498271

申请日：2023-10-31

Applicant: Lextar Electronics Corporation

Inventor： Pei Cong YAN ,  Chia-Chun HSIEH ,  Huei Ping WANG ,  Hung-Chun TONG ,  Yu-Chun LEE

IPC: C09K11/88 ,  C09K11/02 ,  H01L33/50

CPC classification number: C09K11/883 ,  C09K11/025 ,  H01L33/502 ,  B82Y20/00

Abstract: The disclosure relates to a quantum dot structure. The quantum dot structure includes a quantum dot and a cloud-like shell covering a portion of the quantum dot and having an irregular outer surface. The quantum dot includes: a core; a first shell discontinuously around a core surface of the core; and a second shell between the core and the first shell and encapsulating the core surface of the core, wherein the second shell has an irregular outer surface.

公开(公告)号：US20220029067A1

公开(公告)日：2022-01-27

申请号：US17083329

申请日：2020-10-29

Applicant: Lextar Electronics Corporation

Inventor： Yi-Ting TSAI ,  Hung-Chia WANG ,  Chia-Chun HSIEH ,  Hung-Chun TONG ,  Yu-Chun LEE ,  Tzong-Liang TSAI

IPC: H01L33/50

Abstract: A light-emitting diode device is provided. First and second green conversion materials are respectively configured to convert a blue light emitted from a blue light-emitting diode to generate a first green light with a first wavelength range and a first wavelength FWHM, and a second green light with a second wavelength range and a second wavelength FWHM. The second wavelength FWHM is smaller than the first wavelength FWHM. A lower bound of the first wavelength range is smaller than a lower bound of the second wavelength range, and an upper bound of the second wavelength range is greater than an upper bound of the first wavelength range. An output light emitted from the light-emitting diode device has a spectral characteristic of less than 50% of TÜV Rheinland and more than 90% of wide color gamut.

公开(公告)号：US20210288227A1

公开(公告)日：2021-09-16

申请号：US17033699

申请日：2020-09-26

Applicant: Lextar Electronics Corporation

Inventor： Yi-Ting TSAI ,  Hung-Chia WANG ,  Chia-Chun HSIEH ,  Hung-Chun TONG ,  Yu-Chun LEE ,  Tzong-Liang TSAI

IPC: H01L33/50 ,  H01L33/18

Abstract: The wavelength conversion material includes a general formula (I) MmAaBbCcDdEe:ESxREy and satisfies a condition (II) that a proportion of D for the wavelength conversion material greater than or equal to 50%. M is selected from a group consisting of Ca, Sr and Ba. A is selected from a group consisting of elements Mg, Mn, Zn and Cd. B is selected from a group consisting of elements B, Al, Ga and In. C is selected from a group consisting of Si, Ge, Ti and Hf. D is selected from a group consisting of elements O, S and Se. E is selected from a group consisting of elements N and P. ES is selected from a group consisting of divalent Eu, Sm and Yb. RE is selected from a group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm.