JPS54137374A - Illuminator for electronic watch - Google Patents

Illuminator for electronic watch

Info

Publication number
JPS54137374A
JPS54137374A JP4559478A JP4559478A JPS54137374A JP S54137374 A JPS54137374 A JP S54137374A JP 4559478 A JP4559478 A JP 4559478A JP 4559478 A JP4559478 A JP 4559478A JP S54137374 A JPS54137374 A JP S54137374A
Authority
JP
Japan
Prior art keywords
cell
illuminator
light source
plane light
drive circuit
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.)
Pending
Application number
JP4559478A
Other languages
Japanese (ja)
Inventor
Shingo Ichikawa
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP4559478A priority Critical patent/JPS54137374A/en
Publication of JPS54137374A publication Critical patent/JPS54137374A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0035—Details constructional

Abstract

PURPOSE:To raise the sufficient illuminating effect with the use of a thin plane light source by making an EL cell and a cell drive circuit integrally on an identical substrate. CONSTITUTION:A glass substrate 22, which is semitransparent and which has optical diffusivity, is formed on its lower side with both an upper electrode film 23 under the condition having a transparent portion corresponding to an EL cell 21 and a portion of a circuit pattern on which a cell drive ciruict 35 is mounted. After that, the contact of a metal plate 26, which is coated with an insulating surface film 24 of barium titanate and an EL substance, the seal by a moisture preventing sheal 27 and the forming of a shield electrode 28 are accomplished to constitute the EL cell 21. Thus, the cell drive circuit 35 is mounted thereon. As a result, the liquid crystal cell, which is arranged above the illuminator 20, is irradiated uniformly all over the surface by a thin plane light source, and the connection between the illuminator 20 and the watch module can be performed by a low voltage system of 1.5 V.
JP4559478A 1978-04-18 1978-04-18 Illuminator for electronic watch Pending JPS54137374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4559478A JPS54137374A (en) 1978-04-18 1978-04-18 Illuminator for electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4559478A JPS54137374A (en) 1978-04-18 1978-04-18 Illuminator for electronic watch

Publications (1)

Publication Number Publication Date
JPS54137374A true JPS54137374A (en) 1979-10-25

Family

ID=12723666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4559478A Pending JPS54137374A (en) 1978-04-18 1978-04-18 Illuminator for electronic watch

Country Status (1)

Country Link
JP (1) JPS54137374A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775964A (en) * 1988-01-11 1988-10-04 Timex Corporation Electroluminescent dial for an analog watch and process for making it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775964A (en) * 1988-01-11 1988-10-04 Timex Corporation Electroluminescent dial for an analog watch and process for making it

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