EP0896739A1 - Diodenadressiertes farbdisplay mit lanthanoidphosphoren - Google Patents
Diodenadressiertes farbdisplay mit lanthanoidphosphorenInfo
- Publication number
- EP0896739A1 EP0896739A1 EP98904317A EP98904317A EP0896739A1 EP 0896739 A1 EP0896739 A1 EP 0896739A1 EP 98904317 A EP98904317 A EP 98904317A EP 98904317 A EP98904317 A EP 98904317A EP 0896739 A1 EP0896739 A1 EP 0896739A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diode
- carboxylic acid
- phenanthroline
- oxide
- acetylacetonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/20—Luminescent screens characterised by the luminescent material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/182—Metal complexes of the rare earth metals, i.e. Sc, Y or lanthanide
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Definitions
- Diode-addressed color display with lanthanide phosphors Diode-addressed color display with lanthanide phosphors.
- the invention relates to a diode-addressed color display with a UV diode and a phosphor for illuminated displays, lights, solid-state image intensifiers, screens and monitors and others.
- Color displays for illuminated displays, luminaires, solid state amplifiers, screens and monitors are intended to reproduce color images in true color.
- this object is achieved in that the entire color information of a colored image is represented by information about the three primary colors red, green and blue.
- Additive color mixing can be used to produce any color or white from the three primary colors. This principle is used both by the conventional color television set with a tube from Braunschweig and by the various flat screen technologies such as plasma screens,
- Electroluminescent screen and LCD displays There are also color displays on the market in which the triple color red, green, blue is generated by diode arrays with red, green and blue emitting semiconductor diodes.
- the color-true image reproduction in particular the color-pure reproduction of green and blue, is problematic.
- the development of UV-emitting semiconductor diodes has expanded the possibilities for true-color image reproduction for diode-addressed color displays, since theoretically any color of visible light can be generated from UV light.
- phosphors are used which absorb the UV light and emit it again with a wavelength in the visible range. For this conversion of the UV light into the visible range, it is known to use inorganic pigments as phosphors. For example, it's off
- Such a color display is characterized by a high intrinsic emission quantum yield and a ligand-centered absorption in the near UV and the short-wave visible range between 320 and 450 nm with high extinction coefficients.
- the UV absorption has its maximum at 390 to 320 nm. According to photophysical considerations, these two phosphor properties are actually mutually exclusive. Surprisingly, however, it has been shown that phosphors of the composition LnL 3 X 2 meet both criteria.
- the phosphors according to the invention with the "antenna molecules" L which contain benzophenone or acetophenone as structural elements, have many times higher absorptions than classic phosphors.
- a variation of the ligands L allows the almost linear, independent introduction of high absorptions at different wavelengths into the lanthanoid compounds. Concentration quenching, a general problem with classic phosphors with a high activator concentration, is not observed with the phosphors according to the invention.
- the phosphors according to the invention are molecular compounds and therefore generally readily soluble in polar organic solvents. Their properties can therefore be easily examined in solution and the test results can be transferred to the solid state. The solubility in organic solvents also allows new design concepts for diode-addressed color displays.
- the diode-addressed color display comprises a transparent polymeric coating which contains the phosphorus of the composition LnL 3 X 2 in solid solution.
- the coating is transparent because the light is not scattered on the dissolved phosphor particles.
- the phosphors containing europium or samarium convert the UV radiation into visible red light.
- the terbium-containing phosphor converts to green light, the thulium-containing to blue and the dysprosium-containing to blue-yellow mixed light.
- a color display according to the invention consists of the
- the transparent coating can contain, for example, the phosphorus in a solid solution in a transparent matrix made of polyacrylate, polystyrene, epoxy resin or another polymer.
- LEDs are usually cast in epoxy housings, with the cast-on lens made of epoxy resin serving to improve the coupling out of the light from the diode.
- the phosphor can be applied as a contact layer between the actual diode and the epoxy resin dome. It can also be applied as a coating on the outside of the epoxy resin dome.
- the phosphorus is mixed with the epoxy resin and forms a solid solution with it.
- the diode array can be covered by a glass plate which is printed with fluorescent triplets, each with a red, green and blue glowing dot.
- the red glowing dot contains LnL 3 X 2 as phosphor.
- the UV diode is in particular a UV diode made of InGaN or GaN and has its emission maximum between 370 and 410 nm with a half width FWHM ⁇ 50 nm.
- These complex coordination compounds of the lanthanoids europium, terbium, thulium, dysprosium and samarium contain Eu 3 + , Tb 3 + , Tm 3 + , Dys 3 + and Sm 3 + as the metal center, benzophenone-4-carboxylic acid or its derivatives or benzophenone-4 -acety lacetonate or its derivatives as charged ligands and phenanthroline, 1/2 diphenylphenanthroline, 1/2 4-Cl-phenanthroline, 1/2 bipyridine, 1/2 ethylenediamine, triphenylphosphine oxide, trimethylphosphine oxide, triethylphosphine oxide, 1/2 diethylene glycol dimethyl ether ( diglyme) or ethanol as neutral ligands.
- These coordination compounds have strong optical intraligand transitions and, in addition to absorbing the chelate ligands, are also effective as light antennas.
- the primary excitation by UV radiation leads to a ligand-centered excited state, the energy of which is transferred to the lanthanide ion in a subsequent step and leads to light emission there.
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19708562 | 1997-03-04 | ||
DE19708562 | 1997-03-04 | ||
DE19800983A DE19800983A1 (de) | 1997-03-04 | 1998-01-14 | Diodenadressiertes Farbdisplay mit Lanthanoidphosphoren |
DE19800983 | 1998-01-14 | ||
PCT/IB1998/000268 WO1998039807A1 (de) | 1997-03-04 | 1998-03-03 | Diodenadressiertes farbdisplay mit lanthanoidphosphoren |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0896739A1 true EP0896739A1 (de) | 1999-02-17 |
Family
ID=26034454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98904317A Withdrawn EP0896739A1 (de) | 1997-03-04 | 1998-03-03 | Diodenadressiertes farbdisplay mit lanthanoidphosphoren |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0896739A1 (de) |
WO (1) | WO1998039807A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6165631A (en) * | 1997-03-04 | 2000-12-26 | U.S. Philips Corporation | Diode-addressed color display with lanthanoid phosphors |
US7871713B2 (en) | 1998-12-25 | 2011-01-18 | Konica Corporation | Electroluminescent material, electroluminescent element and color conversion filter |
US6656608B1 (en) | 1998-12-25 | 2003-12-02 | Konica Corporation | Electroluminescent material, electroluminescent element and color conversion filter |
DE10036940A1 (de) | 2000-07-28 | 2002-02-07 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Lumineszenz-Konversions-LED |
DE10105800B4 (de) | 2001-02-07 | 2017-08-31 | Osram Gmbh | Hocheffizienter Leuchtstoff und dessen Verwendung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5006503A (en) * | 1990-03-13 | 1991-04-09 | Eastman Kodak Company | Thermally-transferable fluorescent europium complexes |
JPH05152609A (ja) * | 1991-11-25 | 1993-06-18 | Nichia Chem Ind Ltd | 発光ダイオード |
-
1998
- 1998-03-03 EP EP98904317A patent/EP0896739A1/de not_active Withdrawn
- 1998-03-03 WO PCT/IB1998/000268 patent/WO1998039807A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9839807A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998039807A1 (de) | 1998-09-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0907970B1 (de) | Weisse lumineszenzdiode | |
DE60312733T2 (de) | Beleuchtungsvorrichtung mit strahlungsquelle und fluoreszenzmaterial | |
EP1699899B9 (de) | Leuchtstoff und lichtquelle mit derartigem leuchtstoff | |
DE60130762T2 (de) | Elektrolumineszierende materialien und gegenstände aus einer polymermatrix | |
EP1123337B1 (de) | Konjugierte polymere enthaltend 2,7-fluorenyleinheiten mit verbesserten eigenschaften | |
EP1970970B1 (de) | Beleuchtungseinheit mit mindestens einer LED als Lichtquelle | |
DE112007000656B4 (de) | Leuchtstoff, Verfahren zur Herstellung desselben und lichtemittierende Vorrichtungen unter Verwendung desselben | |
DE112009000181B4 (de) | Verfahren zur Herstellung Weißlicht emittierenden Materials | |
KR20170069211A (ko) | 화상 표시 장치용 모듈 및 화상 표시 장치 | |
DE112005002737T5 (de) | Neue Klasse überbrückter Biphenylenpolymere | |
DE10259945A1 (de) | Leuchtstoffe mit verlängerter Fluoreszenzlebensdauer | |
DE60014038T2 (de) | Elektrolumineszenzmaterialen | |
DE112007002622T5 (de) | Aluminat-Leuchtstoff, der zweiwertige Metallelemente enthält, Herstellung desselben und lichtemittierende Vorrichtungen unter Verwendung desselben | |
DE102008038249A1 (de) | alpha-Sialon-Leuchtstoff | |
TWI642757B (zh) | 液晶顯示裝置及其製造方法 | |
DE112007001712T5 (de) | Siliciumhaltiger Leuchtstoff für LED, seine Herstellung und lichtemittierende Vorrichtungen unter Verwendung desselben | |
DE19802046A1 (de) | Diodenadressiertes Farbdisplay mit molekularem Phosphor | |
DE112011104395T5 (de) | Weiß nachleuchtende Leuchtstoffmischung oder Schichtstruktur | |
US6165631A (en) | Diode-addressed color display with lanthanoid phosphors | |
EP0227980A2 (de) | Fluoreszierende aroxysubstituierte Perylen-3,4,9,10-tetracarbonsäurediimide und ihre Verwendung zur flächenmässigen Konzentrierung von Licht | |
JP2007096133A (ja) | 白色ledの製造方法およびそれを用いたバックライトの製造方法並びに液晶表示装置の製造方法 | |
WO1998039807A1 (de) | Diodenadressiertes farbdisplay mit lanthanoidphosphoren | |
DE19800983A1 (de) | Diodenadressiertes Farbdisplay mit Lanthanoidphosphoren | |
CN109096489A (zh) | 一种有机硅超支化荧光材料及其应用 | |
DE102004060708A1 (de) | Rotes Fluoreszenz-Material, Weißlicht emittierende Diode, die rotes Fluoreszenz-Material verwendet und Beleuchtungssystem, das eine Weißlicht emittierende Diode verwendet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
17P | Request for examination filed |
Effective date: 19990311 |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V. |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V. |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V. |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20070927 |