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GB2296378B - Improvements in efficiency of electroluminescent devices - Google Patents

Improvements in efficiency of electroluminescent devices

Info

Publication number
GB2296378B
GB2296378B GB9506336A GB9506336A GB2296378B GB 2296378 B GB2296378 B GB 2296378B GB 9506336 A GB9506336 A GB 9506336A GB 9506336 A GB9506336 A GB 9506336A GB 2296378 B GB2296378 B GB 2296378B
Authority
GB
United Kingdom
Prior art keywords
efficiency
electroluminescent devices
electroluminescent
devices
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
GB9506336A
Other versions
GB9506336D0 (en
GB2296378A (en
Inventor
Robert Stevens
Wayne Mark Cranton
Clive Barrington Thomas
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 GBGB9425693.0A external-priority patent/GB9425693D0/en
Application filed by ULTRA SILICON TECHN UK Ltd filed Critical ULTRA SILICON TECHN UK Ltd
Priority to GB9700131A priority Critical patent/GB2309334B/en
Priority to GB9506336A priority patent/GB2296378B/en
Publication of GB9506336D0 publication Critical patent/GB9506336D0/en
Publication of GB2296378A publication Critical patent/GB2296378A/en
Application granted granted Critical
Publication of GB2296378B publication Critical patent/GB2296378B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/447—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources
    • B41J2/45—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using light-emitting diode [LED] or laser arrays
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/22—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electroluminescent Light Sources (AREA)
GB9506336A 1994-12-20 1995-03-28 Improvements in efficiency of electroluminescent devices Expired - Fee Related GB2296378B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9700131A GB2309334B (en) 1994-12-20 1995-03-28 Guiding light within electroluminescent devices
GB9506336A GB2296378B (en) 1994-12-20 1995-03-28 Improvements in efficiency of electroluminescent devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9425693.0A GB9425693D0 (en) 1994-12-20 1994-12-20 Improvements in and relating to thin-film phospher devices
GB9506336A GB2296378B (en) 1994-12-20 1995-03-28 Improvements in efficiency of electroluminescent devices

Publications (3)

Publication Number Publication Date
GB9506336D0 GB9506336D0 (en) 1995-05-17
GB2296378A GB2296378A (en) 1996-06-26
GB2296378B true GB2296378B (en) 1997-11-19

Family

ID=26306206

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9506336A Expired - Fee Related GB2296378B (en) 1994-12-20 1995-03-28 Improvements in efficiency of electroluminescent devices
GB9700131A Expired - Fee Related GB2309334B (en) 1994-12-20 1995-03-28 Guiding light within electroluminescent devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9700131A Expired - Fee Related GB2309334B (en) 1994-12-20 1995-03-28 Guiding light within electroluminescent devices

Country Status (1)

Country Link
GB (2) GB2296378B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5779924A (en) * 1996-03-22 1998-07-14 Hewlett-Packard Company Ordered interface texturing for a light emitting device
EP0814642A1 (en) * 1996-06-22 1997-12-29 Ultra Silicon Technology (UK) Limited Improvements in efficiency of electroluminescent devices
US8587020B2 (en) 1997-11-19 2013-11-19 Epistar Corporation LED lamps
US6633120B2 (en) 1998-11-19 2003-10-14 Unisplay S.A. LED lamps
GB2331625B (en) * 1997-11-19 2003-02-26 Hassan Paddy Abdel Salam led Lamp
JP4055503B2 (en) 2001-07-24 2008-03-05 日亜化学工業株式会社 Semiconductor light emitting device
US7683386B2 (en) 2003-08-19 2010-03-23 Nichia Corporation Semiconductor light emitting device with protrusions to improve external efficiency and crystal growth

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4774435A (en) * 1987-12-22 1988-09-27 Gte Laboratories Incorporated Thin film electroluminescent device
US5072152A (en) * 1990-02-05 1991-12-10 Planar Systems, Inc. High brightness TFEL device and method of making same
US5124543A (en) * 1989-08-09 1992-06-23 Ricoh Company, Ltd. Light emitting element, image sensor and light receiving element with linearly varying waveguide index
US5131065A (en) * 1991-03-06 1992-07-14 The Boeing Company High luminance and contrast flat display panel
US5142192A (en) * 1988-09-20 1992-08-25 Ricoh Company, Ltd. Thin film electroluminescent element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5336965A (en) * 1990-12-21 1994-08-09 Ford Motor Company Solar load reduction glazing unit with electroluminescent element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4774435A (en) * 1987-12-22 1988-09-27 Gte Laboratories Incorporated Thin film electroluminescent device
US5142192A (en) * 1988-09-20 1992-08-25 Ricoh Company, Ltd. Thin film electroluminescent element
US5124543A (en) * 1989-08-09 1992-06-23 Ricoh Company, Ltd. Light emitting element, image sensor and light receiving element with linearly varying waveguide index
US5072152A (en) * 1990-02-05 1991-12-10 Planar Systems, Inc. High brightness TFEL device and method of making same
US5131065A (en) * 1991-03-06 1992-07-14 The Boeing Company High luminance and contrast flat display panel

Also Published As

Publication number Publication date
GB2309334B (en) 1997-11-19
GB9700131D0 (en) 1997-02-26
GB9506336D0 (en) 1995-05-17
GB2296378A (en) 1996-06-26
GB2309334A (en) 1997-07-23

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Legal Events

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

Effective date: 20010328

728V Application for restoration filed (sect. 28/1977)
728Y Application for restoration allowed (sect. 28/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110328