Unlock instant, AI-driven research and patent intelligence for your innovation.

Novel aluminate-based green phosphors

A green phosphorescence and phosphor technology, applied in white light lighting systems, signal lights and indicators, and single green LED fields, can solve problems such as unsuitable liquid crystal display, plasma display panel cathode ray tube, insufficient conversion efficiency, etc.

Inactive Publication Date: 2008-03-12
INTEMATIX
View PDF12 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Prior art green phosphors have two disadvantages: 1) Most emit in a broadband spectrum which, while generally desirable for higher color rendition in white lighting sources, is not suitable for liquid crystal display (LCD) backlighting , Plasma Display Panel (PDP) and Cathode Ray Tube (CRT); and 2) The luminous intensity (for example, brightness) and conversion efficiency of prior art green phosphors are insufficient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Novel aluminate-based green phosphors
  • Novel aluminate-based green phosphors
  • Novel aluminate-based green phosphors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Embodiments of the present invention generally relate to novel aluminate-based green phosphors (referred to herein as green phosphors). The novel aluminate-based green phosphors of embodiments of the present invention are particularly useful in various display applications. Such display applications include, but are not limited to, backlighting of Liquid Crystal Display (LCD), Plasma Display Panel (PDP), and Cathode Ray Tube (CRT) displays. In addition, it is suitable for any individual green LED use, for example, in decorative lights, sign system lights, signal lights and indicators, and can likewise be used in white light lighting systems.

[0027] Before discussing in detail the chemistry of the aluminate-based green phosphors of the present invention, it may be useful to discuss in general how the phosphors fit into the RGB display application arena. This can be done schematically with reference to FIGS. 1A-C and FIG. 2 .

[0028] FIG. 1A is a schematic diagram of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Novel aluminate-based green phosphors are disclosed having the formula M1-xEuxAlyO1+3y / 2, where M is at least one of a divalent metal selected from the group consisting of Ba, Sr, Ca, Mg, Mn, Zu, Cu, Cd, Sm, and Tm; 0.1 C09K 11 / 64 7 12 3 2006 / 1 / 17 101142296 2008 / 3 / 12 000000000 Intematix Corp. United Wang Ning Dong Yi Cheng Shifan Li Yi-qun mengdui 11287 United 2005 / 1 / 14 11 / 036,914 2007 / 9 / 13 PCT / US2006 / 002001 2006 / 1 / 17 WO2006 / 076737 2006 / 7 / 20 English

Description

technical field [0001] In general, embodiments of the present invention relate to novel aluminate-based green phosphors (referred to herein as green phosphors). In particular, embodiments of the present invention relate to the use of novel aluminate-based green phosphors in display applications such as liquid crystal displays (LCDs), plasma display panels (PDPs), and cathode ray tubes (CRTs). backlighting in displays), but also about individual green LEDs, white lighting systems, signal lights and indicators. Background technique [0002] Embodiments of the present invention relate to green phosphors, which provide an alternative to green LEDs of the state of the art. Green LEDs have the disadvantage of being notoriously less efficient than their UV, blue and red LED counterparts, and in addition, the radiation emitted by green LEDs can exhibit a wavelength shift with increasing temperature, an undesirable characteristic. However, the use of a green phosphor in combination...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64
CPCH01J1/63C09K11/7734C09K11/773H05B33/14H01L33/502C09K11/7731C09K11/57C09K11/7792C09K11/7785C09K11/7786
Inventor 王宁董翊成世凡李依群
Owner INTEMATIX