GB2306251B - Improved luminous efficiency in a thin film EL device - Google Patents

Improved luminous efficiency in a thin film EL device

Info

Publication number
GB2306251B
GB2306251B GB9624268A GB9624268A GB2306251B GB 2306251 B GB2306251 B GB 2306251B GB 9624268 A GB9624268 A GB 9624268A GB 9624268 A GB9624268 A GB 9624268A GB 2306251 B GB2306251 B GB 2306251B
Authority
GB
United Kingdom
Prior art keywords
thin film
luminous efficiency
improved luminous
improved
efficiency
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 - Fee Related
Application number
GB9624268A
Other versions
GB9624268D0 (en
GB2306251A (en
Inventor
Robert Stevens
Wayne Mark Cranton
Clive Barrington Thomas
Ian Peter Mcclean
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.)
ULTRA SILICON TECHN UK Ltd
Original Assignee
ULTRA SILICON TECHN UK Ltd
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
Priority claimed from GB9416731A external-priority patent/GB9416731D0/en
Priority claimed from GBGB9506328.5A external-priority patent/GB9506328D0/en
Application filed by ULTRA SILICON TECHN UK Ltd filed Critical ULTRA SILICON TECHN UK Ltd
Priority to GB9624268A priority Critical patent/GB2306251B/en
Publication of GB9624268D0 publication Critical patent/GB9624268D0/en
Publication of GB2306251A publication Critical patent/GB2306251A/en
Application granted granted Critical
Publication of GB2306251B publication Critical patent/GB2306251B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00Electroluminescent light sources
    • H05B33/12Light sources with substantially two-dimensional radiating surfaces
    • H05B33/14Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/57Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing manganese or rhenium
    • C09K11/572Chalcogenides
    • C09K11/574Chalcogenides with zinc or cadmium
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7743Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing terbium
    • C09K11/7744Chalcogenides
    • C09K11/7745Chalcogenides with zinc or cadmium
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00Electroluminescent light sources
    • H05B33/12Light sources with substantially two-dimensional radiating surfaces
    • H05B33/18Light sources with substantially two-dimensional radiating surfaces characterised by the nature or concentration of the activator
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B44/00Circuit arrangements for operating electroluminescent light sources
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • G09G2300/0823Several active elements per pixel in active matrix panels used to establish symmetry in driving, e.g. with polarity inversion
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • G09G2300/0842Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
GB9624268A 1994-08-18 1995-08-08 Improved luminous efficiency in a thin film EL device Expired - Fee Related GB2306251B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9624268A GB2306251B (en) 1994-08-18 1995-08-08 Improved luminous efficiency in a thin film EL device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9416731A GB9416731D0 (en) 1994-08-18 1994-08-18 Improvements in and relating to TFEL technology
GBGB9506328.5A GB9506328D0 (en) 1994-08-18 1995-03-28 Improvements in and relating to TFEL technology
GB9516259A GB2294585B (en) 1994-08-18 1995-08-08 Improvements in and relating to electroluminescent devices
GB9624268A GB2306251B (en) 1994-08-18 1995-08-08 Improved luminous efficiency in a thin film EL device

Publications (3)

Publication Number Publication Date
GB9624268D0 GB9624268D0 (en) 1997-01-08
GB2306251A GB2306251A (en) 1997-04-30
GB2306251B true GB2306251B (en) 1998-02-04

Family

ID=27267337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9624268A Expired - Fee Related GB2306251B (en) 1994-08-18 1995-08-08 Improved luminous efficiency in a thin film EL device

Country Status (1)

Country Link
GB (1) GB2306251B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046012A (en) * 1979-03-29 1980-11-05 Timex Corp Electroluminescent backlight for electrooptic displays
US4394601A (en) * 1973-07-05 1983-07-19 Sharp Kabushiki Kaisha ZnS:Mn Thin-film electroluminescent element with memory function
GB2122810A (en) * 1982-06-09 1984-01-18 Secr Defence Electroluminescent device
GB2152751A (en) * 1983-12-08 1985-08-07 Koa Denko Electroluminescent device
GB2271022A (en) * 1992-09-24 1994-03-30 Fuji Electric Co Ltd A method for manufacturing a thin-film el device
GB2278853A (en) * 1993-06-08 1994-12-14 Fuji Electric Co Ltd Method for manufacturing thin-film EL device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394601A (en) * 1973-07-05 1983-07-19 Sharp Kabushiki Kaisha ZnS:Mn Thin-film electroluminescent element with memory function
GB2046012A (en) * 1979-03-29 1980-11-05 Timex Corp Electroluminescent backlight for electrooptic displays
GB2122810A (en) * 1982-06-09 1984-01-18 Secr Defence Electroluminescent device
GB2152751A (en) * 1983-12-08 1985-08-07 Koa Denko Electroluminescent device
GB2271022A (en) * 1992-09-24 1994-03-30 Fuji Electric Co Ltd A method for manufacturing a thin-film el device
GB2278853A (en) * 1993-06-08 1994-12-14 Fuji Electric Co Ltd Method for manufacturing thin-film EL device

Also Published As

Publication number Publication date
GB9624268D0 (en) 1997-01-08
GB2306251A (en) 1997-04-30

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Legal Events

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

Effective date: 20000808