JPS5663286A - Display device of electronic timepiece - Google Patents

Display device of electronic timepiece

Info

Publication number
JPS5663286A
JPS5663286A JP13953579A JP13953579A JPS5663286A JP S5663286 A JPS5663286 A JP S5663286A JP 13953579 A JP13953579 A JP 13953579A JP 13953579 A JP13953579 A JP 13953579A JP S5663286 A JPS5663286 A JP S5663286A
Authority
JP
Japan
Prior art keywords
display
pulse
hour
liquid crystal
electronic timepiece
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
JP13953579A
Other languages
Japanese (ja)
Inventor
Masanori Fujita
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.)
Seikosha KK
Original Assignee
Seikosha KK
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 Seikosha KK filed Critical Seikosha KK
Priority to JP13953579A priority Critical patent/JPS5663286A/en
Publication of JPS5663286A publication Critical patent/JPS5663286A/en
Pending legal-status Critical Current

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  • Electric Clocks (AREA)

Abstract

PURPOSE: To display the voltage drop of the battery power source in an electronic timepiece of analog display, by securing the glowing the second display through the radial liquid crystal unit in the contrast lower than the display of hour and minute.
CONSTITUTION: A logic product is secured through the AND gate 75 between the output pulse y0 of the decoder 20 which is according to the second digit gate open pulse P1 generated from the timing pulse generating circuit and the pulse (m) delivered from the pulse generating circuit. Thus the pulse of 1/2 duty of the pulse P1 is generated to give a control to the time during which the liquid crystal common electrode for second display. Accordingly, the application time of the driving voltage is reduced down to 1/2 compared with the display of hour and minute via the similar liquid crystal, and as a result the contrast of the second display becomes lower than the display of hour and minute. Thus the second display is first turned off in display when the voltage of the battery drops. As a result, the voltage drop of the battery can be displayed at the display part in the front of the watch in a simple and assured way for an electronic timepiece of analog display.
COPYRIGHT: (C)1981,JPO&Japio
JP13953579A 1979-10-29 1979-10-29 Display device of electronic timepiece Pending JPS5663286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13953579A JPS5663286A (en) 1979-10-29 1979-10-29 Display device of electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13953579A JPS5663286A (en) 1979-10-29 1979-10-29 Display device of electronic timepiece

Publications (1)

Publication Number Publication Date
JPS5663286A true JPS5663286A (en) 1981-05-29

Family

ID=15247530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13953579A Pending JPS5663286A (en) 1979-10-29 1979-10-29 Display device of electronic timepiece

Country Status (1)

Country Link
JP (1) JPS5663286A (en)

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