JPS5453981A - Driving unit for thin film el display unit - Google Patents
Driving unit for thin film el display unitInfo
- 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
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
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)
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 |
-
1977
- 1977-10-07 JP JP12121377A patent/JPS6015078B2/en not_active Expired
Cited By (4)
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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