GB1378589A - Displaying of information - Google Patents

Displaying of information

Info

Publication number
GB1378589A
GB1378589A GB4953372A GB4953372A GB1378589A GB 1378589 A GB1378589 A GB 1378589A GB 4953372 A GB4953372 A GB 4953372A GB 4953372 A GB4953372 A GB 4953372A GB 1378589 A GB1378589 A GB 1378589A
Authority
GB
United Kingdom
Prior art keywords
radicals
illuminated
oct
panel
ceases
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.)
Expired
Application number
GB4953372A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1378589A publication Critical patent/GB1378589A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • F21K2/06—Non-electric light sources using luminescence; Light sources using electrochemiluminescence using chemiluminescence
    • F21K2/08—Non-electric light sources using luminescence; Light sources using electrochemiluminescence using chemiluminescence activated by an electric field, i.e. electrochemiluminescence
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G02F2/02—Frequency-changing of light, e.g. by quantum counters
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0035—Details constructional
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals

Abstract

1378589 Uses of luminescence EASTMAN KODAK CO 26 Oct 1972 [26 Oct 1971] 49533/72 Heading C4S An organic luminescent material is quenched by an applied electric field. The material is a rare earth methyl-#-diketone chelate having a structure where Q<SP>n</SP><SP>+</SP> is a cation of valence n, where n is an integer from 1 to 6, e.g. Li, Na, K, Rb, Cs, Be, Mg, Ca, Si, Ba, NH 4 and substituted amine and ammonium radicals; M is a metal of atomic number 57 to 71 and 89 to 103; R, R<SP>1</SP> and R<SP>11</SP> are alike or different hydrocarbon radicals including fluorocarbons, having up to 12 carbon atoms. R<SP>1</SP> can also be H, Cl, Br, I or cyano radical. The radicals may be substituted with a halogen, ether thioether. The chelate is in solution with, e.g., methanol, benzene or tetrahydrofuran. Salts to increase conductivity may be added, e.g. benzyl trimethyl NH 4 I or tritylium perchlorate. A large number of examples are given including tris- [4,4,4 - trifluoro - 1 - (2 - thienyl) - 1,3 - butanediono]-Eu in dimethylformamide; [C 6 H 5 COCH: C(CH 3 )O] 3 Tb in dichloroethane. Quenching occurs due to electron injection and ceases when the current is removed or the polarity reversed. Recovery after the current ceases can be delayed using viscous materials, e.g. silicone oil, sucrose or cholesteryl oleyl carbonate. In these cases recovery is speeded by reversing the polarity. A non-quenching fluorescent dye may be added to obtain a multicoloured effect, e.g. mono-bromofluorescein Na salt, Eosine. Information is displayed on a panel comprising the material placed between crossed conductor arrays or between a figure of eight array and a continuous conductor and illuminated by an U.V. lamp. To increase contrast only the figure of eight may be illuminated by using an apertured U.V. filter. Images may also be projected on to the panel.
GB4953372A 1971-10-26 1972-10-26 Displaying of information Expired GB1378589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19241471A 1971-10-26 1971-10-26

Publications (1)

Publication Number Publication Date
GB1378589A true GB1378589A (en) 1974-12-27

Family

ID=22709547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4953372A Expired GB1378589A (en) 1971-10-26 1972-10-26 Displaying of information

Country Status (5)

Country Link
JP (1) JPS4852194A (en)
CA (1) CA970065A (en)
DE (1) DE2252398A1 (en)
FR (1) FR2158952A5 (en)
GB (1) GB1378589A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5158703A (en) * 1991-04-03 1992-10-27 Mitsui Toatsu Chemicals Inc. Resin composition for ultraviolet luminescent screen
KR20150042960A (en) * 2013-10-14 2015-04-22 서울바이오시스 주식회사 watch having dectecting function of counterfeit money

Also Published As

Publication number Publication date
JPS4852194A (en) 1973-07-21
CA970065A (en) 1975-06-24
DE2252398A1 (en) 1973-05-03
FR2158952A5 (en) 1973-06-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee