Red phosphor and light emitting device using the same

US2021102118A1 · US · A1

Patent metadata
FieldValue
Publication numberUS-2021102118-A1
Application numberUS-202017033682-A
CountryUS
Kind codeA1
Filing dateSep 26, 2020
Priority dateOct 3, 2019
Publication dateApr 8, 2021
Grant date

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A red phosphor is expressed by a chemical formula of CazO:Cex, Liy, in which a range of x values is 0<x<0.2, a range of y values is 0≤y<0.2, and a range of z values is 1−x−y≤z≤1−x.

First claim

Opening claim text (preview).

What is claimed is: 1 . A red phosphor of a chemical formula Ca z O:Ce x , Li y , wherein a range of values of x is 0<x<0.2, a range of values of y is 0≤y<0.2, and a range of values of z is 1−x−y≤z≤1−x. 2 . A light emitting device comprising: the red phosphor of claim 1 ; and a light source having a light emission peak wavelength in a range of 400 nm to 500 nm, inclusive.

Assignees

Inventors

Classifications

  • of wavelength conversion means · CPC title

  • having two or more wavelength conversion materials · CPC title

  • Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED] · CPC title

  • Wavelength conversion materials · CPC title

  • with alkaline earth metals · CPC title

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What does patent US2021102118A1 cover?
A red phosphor is expressed by a chemical formula of CazO:Cex, Liy, in which a range of x values is 0<x<0.2, a range of y values is 0≤y<0.2, and a range of z values is 1−x−y≤z≤1−x.
Who is the assignee on this patent?
Panasonic Ip Man Co Ltd
What technology area does this patent fall under?
Primary CPC classification C09K11/7718. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Thu Apr 08 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).