Chelating agents for quantum dot precursor materials in color conversion layers for micro-leds
US-2024194836-A1 · Jun 13, 2024 · US
Light emitting device and fabricating method thereof
US10008644B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10008644-B2 |
| Application number | US-201715630286-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 22, 2017 |
| Priority date | May 30, 2005 |
| Publication date | Jun 26, 2018 |
| Grant date | Jun 26, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A light-emitting device includes a light-emitting element for emitting primary light, and a wavelength conversion unit for absorbing part of the primary light and emitting secondary light having a wavelength longer than that of the primary light, wherein the wavelength conversion unit includes plural kinds of phosphors having light absorption characteristics different from each other, and then at least one kind of phosphor among the plural kinds of phosphors has an absorption characteristic that can absorb the secondary light emitted from at least another kind of phosphor among the plural kinds of phosphors.
First claim
Opening claim text (preview).
What is claimed is: 1. A light-emitting device comprising: a light-emitting element mounted on a hard wiring-board, and a wavelength conversion unit comprising plural kinds of phosphors different in light absorption characteristic from each other that are dispersed in a single layer of a transparent binder resin, wherein the phosphor particles are settled such that a particular kind of the phosphor having a greater median value of the particle size has a greater concentration near said light-emitting element. 2. A light-emitting device comprising: a light-emitting element mounted on a bottom surrounded by a reflective surface of an inner wall, and a wavelength conversion unit comprising plural kinds of phosphors different in light absorption characteristic from each other that are dispersed in a single layer of a transparent binder resin, wherein the phosphor particles are settled such that a particular kind of the phosphor having a greater median value of the particle size has a greater concentration near said light-emitting element.
Assignees
Inventors
Classifications
between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title
between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title
comprising gold [Au] · CPC title
Die-attach connectors and bond wires · CPC title
Electricity · mapped topic
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10008644B2 cover?
- A light-emitting device includes a light-emitting element for emitting primary light, and a wavelength conversion unit for absorbing part of the primary light and emitting secondary light having a wavelength longer than that of the primary light, wherein the wavelength conversion unit includes plural kinds of phosphors having light absorption characteristics different from each other, and then …
- Who is the assignee on this patent?
- Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification H01L33/504. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 26 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).