JPS55126888A - Lighting unit of electronic watch - Google Patents
Lighting unit of electronic watchInfo
- Publication number
- JPS55126888A JPS55126888A JP3408179A JP3408179A JPS55126888A JP S55126888 A JPS55126888 A JP S55126888A JP 3408179 A JP3408179 A JP 3408179A JP 3408179 A JP3408179 A JP 3408179A JP S55126888 A JPS55126888 A JP S55126888A
- Authority
- JP
- Japan
- Prior art keywords
- transparent thin
- film
- lighting unit
- liquid
- light
- 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
Links
Landscapes
- Electric Clocks (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To obtain a surface luminous lighting unit which operates at a low voltage without lessening the contrast of display in the daytime, by using a transparent thin film of an electro-luminescence substance for lighting up a watch display part.
CONSTITUTION: With high-purity zinc sulfide powder, 3.0wt% of manganese powder is mixed and after pressing, the mixture is sintered by heating at 900°C under a vacuum to obtain pellets, which are molten by an electron beam to form transparent thin-film electroluminescence (EL) layer 4. On both side of layer 4, indium oxide is vapor-deposited to form transparent electrodes 3 and 5, thereby obtaining a transparent thin-film EL light. The EL light like this lights up the liquid-crystal panel made of polarizing plates 1a and 1b, liquid-crystal cell 2, and reflecting plate 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3408179A JPS55126888A (en) | 1979-03-23 | 1979-03-23 | Lighting unit of electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3408179A JPS55126888A (en) | 1979-03-23 | 1979-03-23 | Lighting unit of electronic watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55126888A true JPS55126888A (en) | 1980-10-01 |
Family
ID=12404303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3408179A Pending JPS55126888A (en) | 1979-03-23 | 1979-03-23 | Lighting unit of electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55126888A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57108687A (en) * | 1980-12-25 | 1982-07-06 | Seiko Instr & Electronics Ltd | Lighting apparatus for electronic watch |
JPS58195174A (en) * | 1982-05-10 | 1983-11-14 | Seikosha Co Ltd | Timepiece |
US4775964A (en) * | 1988-01-11 | 1988-10-04 | Timex Corporation | Electroluminescent dial for an analog watch and process for making it |
JPH0216299Y2 (en) * | 1988-11-18 | 1990-05-02 |
-
1979
- 1979-03-23 JP JP3408179A patent/JPS55126888A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57108687A (en) * | 1980-12-25 | 1982-07-06 | Seiko Instr & Electronics Ltd | Lighting apparatus for electronic watch |
JPS58195174A (en) * | 1982-05-10 | 1983-11-14 | Seikosha Co Ltd | Timepiece |
US4775964A (en) * | 1988-01-11 | 1988-10-04 | Timex Corporation | Electroluminescent dial for an analog watch and process for making it |
JPH0216299Y2 (en) * | 1988-11-18 | 1990-05-02 |
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