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 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/en
Priority to GB1119073A priority patent/GB1367267A/en
Priority to NL7303189A priority patent/NL7303189A/xx
Application granted granted Critical
Publication of CA943929A publication Critical patent/CA943929A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers 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 having potential barriers 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
    • H01L33/58—Optical field-shaping elements
    • H01L33/60—Reflective elements
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0091—Scattering means in or on the semiconductor body or semiconductor body package
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers 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 having potential barriers 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
    • H01L33/52—Encapsulations

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (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 (en) 1972-03-08 1973-03-05 LIGHT EMITTING DEVICE
GB1119073A GB1367267A (en) 1972-03-08 1973-03-07 Light emitting devices
NL7303189A NL7303189A (en) 1972-03-08 1973-03-07

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 (en)
DE (1) DE2310830A1 (en)
GB (1) GB1367267A (en)
NL (1) NL7303189A (en)

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 (en) * 1989-09-22 1994-12-15 Bodenseewerk Geraetetech Lighting device for display boards

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
DE2310830A1 (en) 1973-09-13
NL7303189A (en) 1973-09-11
GB1367267A (en) 1974-09-18

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 19910319