CA943929A - Light emitting devices - Google Patents

Light emitting devices

Info

Publication number
CA943929A
CA943929A CA136,545A CA136545A CA943929A CA 943929 A CA943929 A CA 943929A CA 136545 A CA136545 A CA 136545A CA 943929 A CA943929 A CA 943929A
Authority
CA
Canada
Prior art keywords
light emitting
emitting devices
devices
light
emitting
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
CA136,545A
Other languages
English (en)
Other versions
CA136545S (en
Inventor
Karel J.W. Kosman
Louis-Philippe Boivin
Dennis Effer
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.)
Nortel Networks Technology Corp
Original Assignee
Bell Canada Northern Electric Research 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
Application filed by Bell Canada Northern Electric Research Ltd filed Critical Bell Canada Northern Electric Research Ltd
Priority to CA136,545A priority Critical patent/CA943929A/en
Priority to DE19732310830 priority patent/DE2310830A1/de
Priority to NL7303189A priority patent/NL7303189A/xx
Priority to GB1119073A priority patent/GB1367267A/en
Application granted granted Critical
Publication of CA943929A publication Critical patent/CA943929A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses
    • H10H20/856—Reflecting means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • 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
    • H05B33/02—Details
    • H05B33/04—Sealing arrangements, e.g. against humidity
    • 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
    • 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
    • H05B33/24—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers of metallic reflective layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/852—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/882—Scattering means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Led Device Packages (AREA)
CA136,545A 1972-03-08 1972-03-08 Light emitting devices Expired CA943929A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA136,545A CA943929A (en) 1972-03-08 1972-03-08 Light emitting devices
DE19732310830 DE2310830A1 (de) 1972-03-08 1973-03-05 Lichtemittierende einrichtung
NL7303189A NL7303189A (enrdf_load_stackoverflow) 1972-03-08 1973-03-07
GB1119073A GB1367267A (en) 1972-03-08 1973-03-07 Light emitting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA136,545A CA943929A (en) 1972-03-08 1972-03-08 Light emitting devices

Publications (1)

Publication Number Publication Date
CA943929A true CA943929A (en) 1974-03-19

Family

ID=4092558

Family Applications (1)

Application Number Title Priority Date Filing Date
CA136,545A Expired CA943929A (en) 1972-03-08 1972-03-08 Light emitting devices

Country Status (4)

Country Link
CA (1) CA943929A (enrdf_load_stackoverflow)
DE (1) DE2310830A1 (enrdf_load_stackoverflow)
GB (1) GB1367267A (enrdf_load_stackoverflow)
NL (1) NL7303189A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414598A (en) * 1992-09-02 1995-05-09 Motorola Inc. Light wedge for distributing light across a display device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931668C2 (de) * 1989-09-22 1994-12-15 Bodenseewerk Geraetetech Beleuchtungsvorrichtung für Anzeigetafeln

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414598A (en) * 1992-09-02 1995-05-09 Motorola Inc. Light wedge for distributing light across a display device

Also Published As

Publication number Publication date
NL7303189A (enrdf_load_stackoverflow) 1973-09-11
GB1367267A (en) 1974-09-18
DE2310830A1 (de) 1973-09-13

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 19910319