JPS5453981A - Driving unit for thin film el display unit - Google Patents

Driving unit for thin film el display unit

Info

Publication number
JPS5453981A
JPS5453981A JP12121377A JP12121377A JPS5453981A JP S5453981 A JPS5453981 A JP S5453981A JP 12121377 A JP12121377 A JP 12121377A JP 12121377 A JP12121377 A JP 12121377A JP S5453981 A JPS5453981 A JP S5453981A
Authority
JP
Japan
Prior art keywords
video
voltage
write
turned
vth
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
JP12121377A
Other languages
Japanese (ja)
Other versions
JPS6015078B2 (en
Inventor
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 JP12121377A priority Critical patent/JPS6015078B2/en
Priority to DE19782843801 priority patent/DE2843801C2/en
Priority to FR7828675A priority patent/FR2405604A1/en
Priority to GB8032430A priority patent/GB2057743B/en
Priority to GB7839702A priority patent/GB2008303B/en
Publication of JPS5453981A publication Critical patent/JPS5453981A/en
Publication of JPS6015078B2 publication Critical patent/JPS6015078B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Transforming Electric Information Into Light Information (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

PURPOSE: To display the intermediate tone by changing the charge charged up in advance in the thin film display unit depending on the amplitude of the video signal through the control of it with the current value of operation time of constant current element with video signal.
CONSTITUTION: With all the OFF condition of the gate 13 at the data side, when the signal S1 is inputted to the driving circuit 11, the circuit 11 is turned on an Vp(light emission voltage Vw- threshold voltage Vth) is fed to all the video elements. The gate 14 is turned off and the element selected to non-illuminated video element of the modulation side gate 13 is selected, performing constant current driving so that SD1 to SDm have a given relation for the input voltage and the output current and the current already charged up is discharged with a constant current; At this stage, the voltage depending on the amplitude of the video signal is preliminarily charged to the write-in video elements. All the gates at the data side 13 and the next scanning side 14 ae turned off. When turning on only SSj, all the scanning electrode except the scanning electrode Yj selected with the write-in circuit 20 are raised to Vth, and the video element (i,j) is illuminated corresponding to the write-in voltage Vw(i)=V(i)+Vth
COPYRIGHT: (C)1979,JPO&Japio
JP12121377A 1977-10-07 1977-10-07 Drive device for thin film EL display device Expired JPS6015078B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP12121377A JPS6015078B2 (en) 1977-10-07 1977-10-07 Drive device for thin film EL display device
DE19782843801 DE2843801C2 (en) 1977-10-07 1978-10-06 Circuit arrangement for controlling a thin-film electroluminescent video display panel with a matrix structure
FR7828675A FR2405604A1 (en) 1977-10-07 1978-10-06 THIN-LAYER ELECTRO-LUMINESCENT DISPLAY PANEL
GB8032430A GB2057743B (en) 1977-10-07 1978-10-06 Video display device
GB7839702A GB2008303B (en) 1977-10-07 1978-10-06 Image display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12121377A JPS6015078B2 (en) 1977-10-07 1977-10-07 Drive device for thin film EL display device

Publications (2)

Publication Number Publication Date
JPS5453981A true JPS5453981A (en) 1979-04-27
JPS6015078B2 JPS6015078B2 (en) 1985-04-17

Family

ID=14805667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12121377A Expired JPS6015078B2 (en) 1977-10-07 1977-10-07 Drive device for thin film EL display device

Country Status (1)

Country Link
JP (1) JPS6015078B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635188A (en) * 1979-08-29 1981-04-07 Sharp Kk Thin film el display unit drive circuit
US6121943A (en) * 1995-07-04 2000-09-19 Denso Corporation Electroluminescent display with constant current control circuits in scan electrode circuit
JP2002282112A (en) * 2001-03-22 2002-10-02 Pigeon Corp Tableware

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635188A (en) * 1979-08-29 1981-04-07 Sharp Kk Thin film el display unit drive circuit
JPS6315588B2 (en) * 1979-08-29 1988-04-05 Sharp Kk
US6121943A (en) * 1995-07-04 2000-09-19 Denso Corporation Electroluminescent display with constant current control circuits in scan electrode circuit
JP2002282112A (en) * 2001-03-22 2002-10-02 Pigeon Corp Tableware

Also Published As

Publication number Publication date
JPS6015078B2 (en) 1985-04-17

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