JPS54130898A - Driving system of thin film el display device - Google Patents

Driving system of thin film el display device

Info

Publication number
JPS54130898A
JPS54130898A JP3906678A JP3906678A JPS54130898A JP S54130898 A JPS54130898 A JP S54130898A JP 3906678 A JP3906678 A JP 3906678A JP 3906678 A JP3906678 A JP 3906678A JP S54130898 A JPS54130898 A JP S54130898A
Authority
JP
Japan
Prior art keywords
auxiliary charge
picture element
circuit
lighting
write
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
JP3906678A
Other languages
Japanese (ja)
Other versions
JPS62513B2 (en
Inventor
Toshihiro Oba
Shuhei Yasuda
Yoshiharu Kanetani
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 JP3906678A priority Critical patent/JPS54130898A/en
Publication of JPS54130898A publication Critical patent/JPS54130898A/en
Publication of JPS62513B2 publication Critical patent/JPS62513B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Control Of El Displays (AREA)

Abstract

PURPOSE:To reduce considerably an average power consumption by providing a circuit, which discriminates whether lighting data is present or not, in a driving circuit and stopping the application of an auxiliary charge voltage in case that no lighting picture element exists in the scanning line. CONSTITUTION:Orthogonal data-side electrodes X1 to Xm and scanning-side electrodes Y1 to Yn are arranged in parallel respectively, and the intersection of them corresponds to one picture element of thin film EL display device 10. An auxiliary charge voltage is applied to these picture elements from auxiliary charge power source circuits 20 and 110 through diode arrays 30, 60 and 70. Switching element circuits 40 and 50 consisting of MOSFETs discharge the charged charge of write non-selection picture element points and apply the write voltage to selection picture element points, and write driving is performed by write voltage circuits 80 and 90. Lighting data discrimination circuit 120 receives data of character generator 123 through parallel-series converter 124 and does not send auxiliary charge signals to circuit 20 in case that lighting picture elements do not exist at all in the selection scanning line, so that the auxiliary charge voltage is not applied to common bus A of diode array 30.
JP3906678A 1978-03-31 1978-03-31 Driving system of thin film el display device Granted JPS54130898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3906678A JPS54130898A (en) 1978-03-31 1978-03-31 Driving system of thin film el display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3906678A JPS54130898A (en) 1978-03-31 1978-03-31 Driving system of thin film el display device

Publications (2)

Publication Number Publication Date
JPS54130898A true JPS54130898A (en) 1979-10-11
JPS62513B2 JPS62513B2 (en) 1987-01-08

Family

ID=12542746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3906678A Granted JPS54130898A (en) 1978-03-31 1978-03-31 Driving system of thin film el display device

Country Status (1)

Country Link
JP (1) JPS54130898A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148797A (en) * 1981-03-11 1982-09-14 Iwatsu Electric Co Ltd Capacitive matrix display element driving circuit
US4823121A (en) * 1985-10-15 1989-04-18 Sharp Kabushiki Kaisha Electroluminescent panel driving system for driving the panel's electrodes only when non-blank data is present to conserve power

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628913U (en) * 1985-07-01 1987-01-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148797A (en) * 1981-03-11 1982-09-14 Iwatsu Electric Co Ltd Capacitive matrix display element driving circuit
US4823121A (en) * 1985-10-15 1989-04-18 Sharp Kabushiki Kaisha Electroluminescent panel driving system for driving the panel's electrodes only when non-blank data is present to conserve power

Also Published As

Publication number Publication date
JPS62513B2 (en) 1987-01-08

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