BE880927A - HIGH CONTRAST VIEWING DEVICE WITH A DARK LAYER - Google Patents

HIGH CONTRAST VIEWING DEVICE WITH A DARK LAYER

Info

Publication number
BE880927A
BE880927A BE2/58307A BE2058307A BE880927A BE 880927 A BE880927 A BE 880927A BE 2/58307 A BE2/58307 A BE 2/58307A BE 2058307 A BE2058307 A BE 2058307A BE 880927 A BE880927 A BE 880927A
Authority
BE
Belgium
Prior art keywords
high contrast
viewing device
dark layer
contrast viewing
dark
Prior art date
Application number
BE2/58307A
Other languages
French (fr)
Inventor
J M Lo
D M Ayyagari
M S Ayyagari
M P Schrank
Original Assignee
Gte Sylvania Inc
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 Gte Sylvania Inc filed Critical Gte Sylvania Inc
Publication of BE880927A publication Critical patent/BE880927A/en

Links

Classifications

    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
BE2/58307A 1978-12-29 1979-12-28 HIGH CONTRAST VIEWING DEVICE WITH A DARK LAYER BE880927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US97427978A 1978-12-29 1978-12-29

Publications (1)

Publication Number Publication Date
BE880927A true BE880927A (en) 1980-04-16

Family

ID=25521840

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/58307A BE880927A (en) 1978-12-29 1979-12-28 HIGH CONTRAST VIEWING DEVICE WITH A DARK LAYER

Country Status (6)

Country Link
BE (1) BE880927A (en)
CA (1) CA1144265A (en)
DE (1) DE2952585A1 (en)
FR (1) FR2445571A1 (en)
GB (1) GB2039146A (en)
NL (1) NL7909342A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6016078B2 (en) * 1980-09-17 1985-04-23 シャープ株式会社 thin film light emitting device
US4455506A (en) * 1981-05-11 1984-06-19 Gte Products Corporation Contrast enhanced electroluminescent device
DE3231727A1 (en) * 1981-09-21 1983-04-07 Sun Chemical Corp., New York, N.Y. ELECTROLUMINESCENT DISPLAY DEVICE
DE3371578D1 (en) * 1982-05-19 1987-06-19 Matsushita Electric Ind Co Ltd Electroluminescent display unit
EP0109589A1 (en) * 1982-11-15 1984-05-30 GTE Products Corporation Electroluminescent thin film display device
CA1243762A (en) * 1983-10-11 1988-10-25 Martin P. Schrank Thin film electroluminescent display device
US4547702A (en) * 1983-10-11 1985-10-15 Gte Products Corporation Thin film electroluminscent display device
US4602189A (en) * 1983-10-13 1986-07-22 Sigmatron Nova, Inc. Light sink layer for a thin-film EL display panel
JPS60180093A (en) * 1984-02-24 1985-09-13 ホ−ヤ株式会社 Thin film el element
US4672264A (en) * 1985-01-08 1987-06-09 Phosphor Products Company Limited High contrast electroluminescent display panels
GB2176340B (en) * 1985-06-04 1989-07-05 Phosphor Prod Co Ltd High contrast electroluminescent displays
GB2176341B (en) * 1985-06-04 1989-07-05 Phosphor Prod Co Ltd High contrast electroluminescent displays
JPH0679513B2 (en) * 1985-12-25 1994-10-05 株式会社日本自動車部品総合研究所 Method for manufacturing thin film electroluminescent device
DE19825371A1 (en) * 1998-06-06 1999-12-09 Bayer Ag Electrochromic display device with insulated leads

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3560784A (en) * 1968-07-26 1971-02-02 Sigmatron Inc Dark field, high contrast light emitting display
US4099091A (en) * 1976-07-28 1978-07-04 Matsushita Electric Industrial Co., Ltd. Electroluminescent panel including an electrically conductive layer between two electroluminescent layers
GB1571620A (en) * 1976-10-29 1980-07-16 Secr Defence Electroluminescent phosphor panels

Also Published As

Publication number Publication date
FR2445571B3 (en) 1981-10-16
DE2952585A1 (en) 1980-07-10
CA1144265A (en) 1983-04-05
FR2445571A1 (en) 1980-07-25
NL7909342A (en) 1980-07-01
GB2039146A (en) 1980-07-30

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: GTE SYLVANIA INC.

Effective date: 19861231