JPS5340297A - Driving system of liquid crystal display unit - Google Patents

Driving system of liquid crystal display unit

Info

Publication number
JPS5340297A
JPS5340297A JP11505576A JP11505576A JPS5340297A JP S5340297 A JPS5340297 A JP S5340297A JP 11505576 A JP11505576 A JP 11505576A JP 11505576 A JP11505576 A JP 11505576A JP S5340297 A JPS5340297 A JP S5340297A
Authority
JP
Japan
Prior art keywords
liquid crystal
display unit
crystal display
driving system
driving
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
JP11505576A
Other languages
Japanese (ja)
Inventor
Hiroo 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.)
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 JP11505576A priority Critical patent/JPS5340297A/en
Priority to US05/742,971 priority patent/US4100540A/en
Priority to GB47860/76A priority patent/GB1564032A/en
Priority to DE2652576A priority patent/DE2652576C2/en
Priority to CH1454876A priority patent/CH619833B/en
Publication of JPS5340297A publication Critical patent/JPS5340297A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE: To vary the driving effective voltage by changing the driving signal duty of a liquid crystal display unit without changing the line voltage, and thus to ensure a effective display modulation with a low power sunsumption for the matrix driving.
COPYRIGHT: (C)1978,JPO&Japio
JP11505576A 1975-11-18 1976-09-25 Driving system of liquid crystal display unit Pending JPS5340297A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP11505576A JPS5340297A (en) 1976-09-25 1976-09-25 Driving system of liquid crystal display unit
US05/742,971 US4100540A (en) 1975-11-18 1976-11-17 Method of driving liquid crystal matrix display device to obtain maximum contrast and reduce power consumption
GB47860/76A GB1564032A (en) 1975-11-18 1976-11-17 Method and device fordriving liquid crystal display matrix
DE2652576A DE2652576C2 (en) 1975-11-18 1976-11-18 Method of operating a liquid crystal display device
CH1454876A CH619833B (en) 1975-11-18 1976-11-18 METHOD FOR EXCITING A LIQUID CRYSTAL INDICATOR AND CIRCUIT FOR CARRYING OUT THE METHOD.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11505576A JPS5340297A (en) 1976-09-25 1976-09-25 Driving system of liquid crystal display unit

Publications (1)

Publication Number Publication Date
JPS5340297A true JPS5340297A (en) 1978-04-12

Family

ID=14653049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11505576A Pending JPS5340297A (en) 1975-11-18 1976-09-25 Driving system of liquid crystal display unit

Country Status (1)

Country Link
JP (1) JPS5340297A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57196677A (en) * 1981-05-29 1982-12-02 Hitachi Ltd Storage device for character graphic information

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57196677A (en) * 1981-05-29 1982-12-02 Hitachi Ltd Storage device for character graphic information
JPH031876B2 (en) * 1981-05-29 1991-01-11 Hitachi Ltd

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