JPS5470785A - Driving circuit for thin film el element - Google Patents

Driving circuit for thin film el element

Info

Publication number
JPS5470785A
JPS5470785A JP13850377A JP13850377A JPS5470785A JP S5470785 A JPS5470785 A JP S5470785A JP 13850377 A JP13850377 A JP 13850377A JP 13850377 A JP13850377 A JP 13850377A JP S5470785 A JPS5470785 A JP S5470785A
Authority
JP
Japan
Prior art keywords
voltage
erasion
maintenance
writing
driving 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
JP13850377A
Other languages
Japanese (ja)
Inventor
Sumio Kita
Matsuhiko Hirano
Shinobu Shiotani
Kichi Hatta
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP13850377A priority Critical patent/JPS5470785A/en
Publication of JPS5470785A publication Critical patent/JPS5470785A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

PURPOSE: To decrease the dielectric strength request of the driving circuit as well as to share the selective application circuit of the writing/erasion voltage to simplify the circuit constitution, by securing the driving through application of the maintenance voltage, the writing voltage and the erasion voltage to be applied to the thin film EL element from one and the other electrodes by 1/2 each.
CONSTITUTION: Maintenance driving circuit 20 which supplies the maintenance voltage to the X electrode is constituted by four switches S1∼S4, power source- VS/2 of 1/2 maintenance voltage and +VS/2 plus the earth potential. And maintenance driving circuit 30 for the Y electrode is composed of four switches S5∼S8, the similar two positive and negative power sources plus the earth potential. While write- erasion switching circuit 40 to supply both the writing voltage and the erasion voltage to the X electrode consists of power source -VW/2 of 1/2 writing voltage, power source -Ve/2 of 1/2 writing voltage, power souce -Ve of 1/2 erasion voltage plus switch S9 and S10 used for these power sources. Write-erasion switching circuit 70 for the Y electrode consists of power source +VW/2, +VW/2, plus switch S11 and S12.
COPYRIGHT: (C)1979,JPO&Japio
JP13850377A 1977-11-16 1977-11-16 Driving circuit for thin film el element Pending JPS5470785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13850377A JPS5470785A (en) 1977-11-16 1977-11-16 Driving circuit for thin film el element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13850377A JPS5470785A (en) 1977-11-16 1977-11-16 Driving circuit for thin film el element

Publications (1)

Publication Number Publication Date
JPS5470785A true JPS5470785A (en) 1979-06-06

Family

ID=15223638

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13850377A Pending JPS5470785A (en) 1977-11-16 1977-11-16 Driving circuit for thin film el element

Country Status (1)

Country Link
JP (1) JPS5470785A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179682A (en) * 1988-12-29 1990-07-12 Sharp Corp Driving method for display device
US5066893A (en) * 1989-12-08 1991-11-19 Nippon Soken, Inc. Driving circuit for an electroluminescence device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179682A (en) * 1988-12-29 1990-07-12 Sharp Corp Driving method for display device
US5066893A (en) * 1989-12-08 1991-11-19 Nippon Soken, Inc. Driving circuit for an electroluminescence device

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