JPS5498598A - Drive method for liquid crystal - Google Patents

Drive method for liquid crystal

Info

Publication number
JPS5498598A
JPS5498598A JP634878A JP634878A JPS5498598A JP S5498598 A JPS5498598 A JP S5498598A JP 634878 A JP634878 A JP 634878A JP 634878 A JP634878 A JP 634878A JP S5498598 A JPS5498598 A JP S5498598A
Authority
JP
Japan
Prior art keywords
liquid crystal
parallel
voltage
capacitor
temperature
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.)
Granted
Application number
JP634878A
Other languages
Japanese (ja)
Other versions
JPS6051718B2 (en
Inventor
Takao Shoda
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP634878A priority Critical patent/JPS6051718B2/en
Publication of JPS5498598A publication Critical patent/JPS5498598A/en
Publication of JPS6051718B2 publication Critical patent/JPS6051718B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE: To prevent cross talk and the adverse effect on the life of liquid crystal due to unnecessary voltage application, by changing the effective voltage applied in matching with the temperature characteristics of liquid crystal display board.
CONSTITUTION: The cell 1 is connected in series with the P-MOSFET 2 and current limit resistor 4 being the switching means, and is connected in parallel with the gate control circuit 3 and the dividing means 5. The voltage dividing means 5 consists of the capacitor C3 connected in parallel with D1 to D6, capacitor C1 in parallel with D1 and D2, and capacitor C2 in parallel with D1 to D4, and diodes D1 to D6. The power supply voltage is split into a plurality to the effective value according to the temperature, and the power supply voltage is fed to the liquid crystal with a distance not remaining DC component, e.g., 3/2T of the drive waveform, with P-MOSFET 2. Thus, the effective voltage is lowered according to the increased temperature even at selection or non-selection, allowing to avoid the cross talk at high temperature and unnecessary voltage application.
COPYRIGHT: (C)1979,JPO&Japio
JP634878A 1978-01-20 1978-01-20 LCD driving method Expired JPS6051718B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP634878A JPS6051718B2 (en) 1978-01-20 1978-01-20 LCD driving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP634878A JPS6051718B2 (en) 1978-01-20 1978-01-20 LCD driving method

Publications (2)

Publication Number Publication Date
JPS5498598A true JPS5498598A (en) 1979-08-03
JPS6051718B2 JPS6051718B2 (en) 1985-11-15

Family

ID=11635857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP634878A Expired JPS6051718B2 (en) 1978-01-20 1978-01-20 LCD driving method

Country Status (1)

Country Link
JP (1) JPS6051718B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132821A (en) * 1984-07-26 1986-02-15 Koito Mfg Co Ltd Temperature compensating circuit
JPS6283724A (en) * 1985-10-09 1987-04-17 Hitachi Ltd LCD display drive circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132821A (en) * 1984-07-26 1986-02-15 Koito Mfg Co Ltd Temperature compensating circuit
JPS6283724A (en) * 1985-10-09 1987-04-17 Hitachi Ltd LCD display drive circuit

Also Published As

Publication number Publication date
JPS6051718B2 (en) 1985-11-15

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