CN100507995C - Electroluminescent display panel and method for operating the same - Google Patents
Electroluminescent display panel and method for operating the same Download PDFInfo
- Publication number
- CN100507995C CN100507995C CNB2006100984504A CN200610098450A CN100507995C CN 100507995 C CN100507995 C CN 100507995C CN B2006100984504 A CNB2006100984504 A CN B2006100984504A CN 200610098450 A CN200610098450 A CN 200610098450A CN 100507995 C CN100507995 C CN 100507995C
- Authority
- CN
- China
- Prior art keywords
- voltage
- black data
- display panel
- grid line
- data
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention discloses a method for operating an electroluminescent display panel which includes: a plurality of unit pixels; grid lines and source lines are intersectional; a first switch for responsing to the signals provided to the grid line to be converted into data signals; a capacitor for providing and exerting data voltage through the first switch; a second switch connected to the power supply voltage end, being converted by the voltage induced by the capacitor; an electroluminescent part illuminating by the power supply voltage provided by the second switch. The method includes: exerting data voltage on the source lines, dividing each frame into a normal interval and a black data interval, adding real data into the normal interval and adding black data into the black data interval; using grid lines having a plurality of unit pixels in the normal and black data intervals; and exerting black data voltage on the grid lines of the black data interval when using the grid lines and disconnecting the electroluminescent part at a certain interval when displaying images.
Description
The application requires the interests of korean patent application Nos.P2001-86065 that submits in Dec 27 calendar year 2001 and the P2001-87831 that submits to Dec 29 calendar year 2001, in this article by fully with reference in addition combination.
Technical field
The present invention relates to a kind of el light emitting device, the invention particularly relates to a kind of electroluminescence display panel and the method that is used to operate it, in the electroluminescence display panel, the operation of el light emitting device is controlled, and is used to make High Resolution Display.
Background technology
Because with require to receive light and come the passive device of display image to compare, el light emitting device has caused attention as flat-panel monitor of future generation, so that the advantage of el light emitting device is a response speed is fast, the good brightness as active device, the simple structure that is easy to make, in light weight and thin and size is little.
El light emitting device has multiple application, and it is backlight to change LCD (LCD) over to, movement station, auto-navigation system (CNS), notebook computer and wall-hanging TV (TV) machine.
In the el light emitting device,, inorganic EL device, Organnic electroluminescent device are arranged according to the material of el light emitting device.
Organnic electroluminescent device is a kind of like this device, wherein, iunjected charge in the organic thin layer between electron injection electrode and hole injecting electrode, to form a pair of electronics and hole, they subside and are luminous.The inorganic EL device is a kind of like this device, and wherein, the electron collision electroluminescent material by highfield quickens to activate electroluminescent material, makes electroluminescent material send fluorescence when electroluminescent material falls back to ground state.
The electroluminescence display panel of explained later correlation technique.Fig. 1 has illustrated the circuit of unit picture element of the electroluminescence display panel of correlation technique.
With reference to figure 1, unit picture element is provided with: first and second switchgears 11 and 13 of connecting with source line SL are used to respond the conversion of signals data-signal that is added to grid line GL; Capacitor 15 has the first terminal and second terminal, and the first terminal is connected with the lead-out terminal of second switch device 13, and second terminal is connected with power supply terminal Vdd, is used for filling by first and second switchgears 11 and 13 data voltages of receiving to it; The 3rd switchgear 17 is connected between second terminal of the lead-out terminal of first switchgear 11 and capacitor 15, can be controlled by the voltage in the first terminal induction of capacitor 15; With the 4th switchgear 19, be connected between power supply terminal Vdd and the el light emitting device 20, can be by changing at the voltage of the first terminal induction.First to the 4th switchgear 11,13,17 and 19 is PMOS transistors.
The operation of the electroluminescence display panel of explained later correlation technique.
When providing initiating signal, when source line SL provides ABSORPTION CURRENT, fill the data voltage relevant with 13 to capacitor 15 with signal by first and second switchgears 11 to grid line GL.
Below, will provide by the 4th switchgear 19 with current related electric current and offer el light emitting device 20 by the 3rd switchgear 17, make el light emitting device send fluorescence at the time durations of determining.
Then, even cut off the gate signal of controlling first and second switchgears 11 and 13, el light emitting device also keeps sending fluorescence because of the data voltage discharge that is stored in the capacitor.
Yet the el light emitting device display panel of correlation technique has following problem.
The pixel source line that passes through in the whole zone of electroluminescence display panel has resistive component, between grid line and source line, stray capacitance is arranged, cause in the present frame after finishing former frame, provide the data voltage relevant if weak ABSORPTION CURRENT flows to source line SL, data voltage is stored in the capacitor 15 just requires for a long time with weak ABSORPTION CURRENT.Therefore, as shown in Figure 2, occur image blurringly among the present frame 2f after finishing former frame, this has just hindered manufacturing high definition electroluminescence display panel.
Summary of the invention
Therefore, the method that the present invention relates to electroluminescence display panel and be used to operate it has been eliminated the one or more problems that limitation and shortcoming caused because of correlation technique substantially.
An advantage of the invention is the method that electroluminescence display panel is provided and is used to operate it, wherein, data voltage can be charged on the capacitor apace, be used for display high definition images.Explain feature of the present invention and advantage in the following description, the part in them just clearly, perhaps can be understood in practice of the present invention in description.Be used in and particularly point out structure in written description and its claims and the accompanying drawing and realize and obtain purpose of the present invention and other advantage.
In order to realize these and other advantage and purpose according to the invention, such as embodiment and broadly described, a kind of method that is used to operate electroluminescence display panel, described electroluminescence display panel has: a plurality of unit picture elements; All be arranged to grid line intersected with each other and source line; First switchgear is used to respond the conversion of signals data-signal that offers grid line; Capacitor is used for data voltage being provided and applying voltage to it by first switchgear; The second switch device is connected with power supply voltage terminal, by changing at the voltage of capacitor induction; Electroluminescent part uses the supply voltage that provides by the second switch device luminous, and described method comprises: each frame is divided into normal interval and black data interval; During the normal interval, apply data voltage, apply black data voltage to the source line in black data interim to the source line; Enable the grid line of a plurality of unit picture elements in the normal interval gradually, during the normal interval, applying first grid signal, and enable the grid line of a plurality of unit picture elements at interval gradually, to apply second gate signal to grid line in black data interim at black data to grid line; With when enabling grid line, apply black data voltage to the source line at interval at black data, being used for that display image disconnects the second switch device simultaneously so that electroluminescent part repeats to disconnect with fixed intervals, can be the voltage that is used to disconnect the second switch device to the black data voltage of capacitor discharge wherein.
Knowing that general description above and following detailed all are exemplary and indicative, is in order to provide the of the present invention further explanation as claim.
Description of drawings
Description of drawings embodiments of the invention, explained principle of the present invention with describing, comprise accompanying drawing to provide to further understanding of the present invention, it has constituted the part of this instructions.
Among the figure:
Fig. 1 has illustrated the circuit of unit picture element of the electroluminescence display panel of correlation technique;
Fig. 2 has illustrated the time diagram of the problem of the electroluminescence display panel that is used to explain correlation technique;
Fig. 3 has illustrated according to the present invention the circuit of the electroluminescence display panel of first most preferred embodiment;
Figure 4 and 5 have illustrated the running time figure of Fig. 3;
Fig. 6 has illustrated the block diagram that comprises the electroluminescence display panel of unit picture element among Fig. 3;
Fig. 7 has illustrated the circuit according to second embodiment of the invention;
Fig. 8 has illustrated the running time figure of Fig. 7;
Fig. 9 has illustrated the block diagram that comprises the electroluminescence display panel of unit picture element among Fig. 7;
Figure 10-15 explanation is one circuit among the 3rd to the 8th embodiment according to the present invention;
Figure 16 has illustrated and has been used to use the circuit of method of operating according to another embodiment of the present invention; With
Figure 17 has illustrated according to the present invention, is used for explaining the running time figure of the method for using Figure 16 circuit operation electroluminescence display panel.
Embodiment
Now, describe embodiments of the invention in detail, their example has been described in the accompanying drawings.
First embodiment
Fig. 3 has illustrated the circuit according to the electroluminescence display panel of first embodiment of the invention.Figure 4 and 5 have illustrated the block diagram of the electroluminescence display panel of the unit picture element that comprises Fig. 3.
With reference to figure 3, a plurality of unit picture elements are provided, define unit picture element at each cross section of many grid line GL and the source line SL vertical with grid line.Only shown a unit cell among the figure.
Unit cell according to the electroluminescence display panel of first embodiment of the invention comprises: first switchgear 100 is used to respond the conversion of signals data-signal that offers grid line GL; Capacitor 110 has the first terminal and second terminal, and the first terminal is connected with the output of first switchgear 100, and second terminal is connected with power supply terminal Vdd, is used to make the data voltage of receiving by first switchgear 100 to charge to it; Second switch device 120 is connected with power supply terminal, is used for being changed by the voltage of responding at the first terminal of capacitor; Electroluminescent part 130 is used and is come luminous by second switch device 120 from power source voltage; With luminous inhibition part 140, disconnect electroluminescent part 130 by receiving initiating signal E ' at preset time, capacitor 110 is discharged during the preset time before the present frame, and discharge the electric charge in the capacitor that is stored in former frame.
First and second switchgears 100 and 120 and luminous inhibition part 140 comprise PMOS transistor P1, P2 and P3 respectively.
Reference time figure explains the operation of the electroluminescence display panel that above-mentioned unit picture element is arranged.
With reference to Figure 4 and 5, before the operation of present frame, promptly, before the starting gate signal, if luminous inhibition drive part (not shown) provides enable signal E in the luminous inhibition part 140 of two side direction of capacitor 110, just will discharge fully, make electroluminescent part 130 no longer luminous from luminous inhibition part 140 at the voltage that former frame is filled in capacitor 110.
Then, when the operation present frame, promptly, when initiating signal being offered grid line GL, when data voltage is offered source line SL, make up the number according to voltage in capacitor 110 and connect second switch device 120 by first switchgear 100, making provides power from power supply terminal Vdd to electroluminescent part 130, makes electroluminescent part 130 luminous.
With reference to figure 5, according to aforesaid operations, after the operation of former frame 1f but during fixing time really before the operation of present frame 2f, the data voltage that is stored in the capacitor 110 among the former frame 1f is discharged fully, luminous to prevent electroluminescent part 130, thereby suppress the fuzzy of image, improve picture quality.
When providing time durations between moment of enable signal E to be t1 before when hypothesis is luminous from electroluminescent part 130 beginning, being carved into next frame, regulate brightness by regulating t1, thereby regulate between the light emission period of electroluminescent part 130.
In addition, when requiring with low-power mode driving electroluminescent part 130, t1 is very short, is used for the efficient low power pattern that conforms to whole grey balance.
The total system of the electroluminescence display panel of the above-mentioned unit picture element of explained later.
With reference to figure 6, electroluminescence display panel comprises: system interface part 203, be used to introduce red, green, blue (R, G, the B) signal that is applied to electroluminescence display panel 210, and these signals are the data-signals from drive system 200; Timing controller part 205 is used for receiving data-signal and producing different control signals and the data that are used for stable operation electroluminescence display panel 210 from system interface part 203; Source drive part 207, the data-signal that is used for the controller of self-timing in the future part 205 is converted to simulating signal, data-signal is applied to the source line SL of electroluminescence display panel 210; Grid drive part 209 is used for receiving display control signal from timing controller part 205, and pulse voltage is added to grid line; Power section 211 is used for applying desired power from drive system 200 received powers to various piece; Gamma power unit 213 is used to receive the power from power section 211 branches, is used to produce the desired reference voltage of D/A switch of source drive part 207; With luminous inhibition drive part 220, be used to control luminous inhibition part 140, luminous inhibition part 140 disconnects the electroluminescent part 130 in the above-mentioned unit picture element during preset time under the control of timing controller part 205.
Second embodiment
Fig. 7 has illustrated the circuit according to second embodiment of the invention.Fig. 8 has illustrated the running time figure of Fig. 7.Fig. 9 has illustrated the block diagram that comprises the electroluminescence display panel of unit picture element among Fig. 7.
Second embodiment of the invention is characterised in that: enable signal E is started by the preceding grid line GL (N-1) of many grid line GL (N), and enable signal E is the initiating signal of luminous inhibition part 140.That is, do not require the luminous inhibition part 140 of luminous inhibition drive part 220 controls, make capacitor 110 initialization but draw oneself up by luminous inhibition part 140.
With reference to figure 8, explain the operation of electroluminescence display panel of the present invention.
With reference to figure 8, when starting the grid line GL (N-1) of previous stage, the vision signal storage is in the pixel of grid line GL (N-1) connection.
Then, with reference to figure 8, the luminous inhibition part 140 of pixel drive that is connected with grid line GL (N) is discharged the voltage in the capacitor 110 that is stored in former frame fully, makes capacitor 110 initialization.
Then, as starting grid line GL (N) and when source line SL provides data voltage, make up the number according to voltage to capacitor 110 by first switchgear 100, simultaneously, connect second switch device 120, so that electroluminescent part 130 is along with providing power and a luminous time durations from power supply terminal VDD to it.
Fig. 9 has illustrated the block diagram of the electroluminescence display panel of unit picture element among Fig. 7, has omitted the luminous inhibition drive part 220 Fig. 6 from it.That is, enable signal ' E ' is started by the front end grid line GL (N-1) of many grid line GL (N), and enable signal ' E ' comes the autoluminescence suppressing portion to divide 140 initiating signal not require luminous inhibition drive part 220 shown in Figure 6.
The 3rd embodiment
Figure 10 has illustrated the circuit according to third embodiment of the invention, and its time diagram is identical with Fig. 4.
With reference to Figure 10, except luminous inhibition part 140 is connected between the lead-out terminal of the lead-out terminal of first switchgear 100 and second switch device 120, consistent with first embodiment according to the electroluminescence display panel of third embodiment of the invention.
In electroluminescence display panel, before the operation present frame, promptly, before the starting gate signal, if luminous inhibition drive part (not shown) provides enable signal E to luminous inhibition part 140, suppress part 140 with regard to operating light-emitting, make data voltage in the capacitor 110 that is stored in former frame be initialized as near the threshold voltage of second switch device 120 value, thereby it is luminous to suppress electroluminescent part 130.
Then, when the operation present frame, provide data voltage as starting grid line GL and to source line SL, when for example having the vision signal of low-light level, though changing capacitor will spend during the long time in correlation technique, but, make up the number according to voltage to capacitor 110 rapidly in an embodiment of the present invention, thereby can make the electroluminescence display panel of high definition.
The electroluminescence display panel that can be used for having the correlation technique of 4 TFT structures according to the luminous inhibition part 140 of third embodiment of the invention.
The 4th embodiment
Figure 11 has illustrated the circuit according to fourth embodiment of the invention, and its time diagram is identical with Fig. 8.
With reference to Figure 11, the 4th embodiment is the combination of a plurality of embodiment of related explanation with Fig. 7 and 10.
Promptly, luminous inhibition part 140 is connected between the lead-out terminal of the lead-out terminal of first switchgear 100 and second switch device 120, enable signal E is started by the front end grid line GL (N-1) of many grid line GL (N), and enable signal E comes the initiating signal of luminous inhibition part 140.
The the 5th to the 8th embodiment
Figure 12-15 has illustrated according to the present invention the circuit diagram of the 5th to the 8th embodiment respectively.
The electroluminescence display panel of the 5th to the 8th embodiment also is included in the 3rd switchgear the electroluminescence display panel of the 5th to the 8th embodiment according to the present invention respectively according to the present invention.
Response and luminous inhibition part 140 identical signal ' E ' or GL (N-1) ' drive the 3rd switchgear 150, and the 3rd switchgear 150 is contained between second switch device 120 and the electroluminescent part 130.
The 3rd switchgear 150 is nmos pass transistors, when the timesharing of driven for emitting lights suppressing portion disconnects, connects when driven for emitting lights does not suppress part 140, is used for more effectively controlling electroluminescent part 130.
The 3rd switchgear of luminous inhibition part 140 and the 5th to the 8th embodiment also can be used for having the electroluminescence display panel of the correlation technique of 4 TFT.
Another embodiment of method of operating
Figure 16 has illustrated the circuit that is used to use method of operating according to another embodiment of the present invention.Figure 17 has illustrated a running time figure, and it is used to explain a kind of method, and this method is used for using the circuit according to Figure 16 of the present invention to operate electroluminescence display panel.
With reference to Figure 16, the electroluminescence display panel that is used to use method of operating according to another embodiment of the present invention comprises: the matrix of a plurality of unit picture elements, the source line SL of many vertical direction that unit picture element intersects by many grid line GL of horizontal direction with grid line GL limits.
Only shown a unit picture element among the figure.Though it is not shown,, in a side of electroluminescence display panel a grid drive part is arranged, be used to start grid line GL, the data-driven part is arranged on panel, be used for starting source line SL, the timing controller part is arranged, be used to provide signal to play moving grid drive part and data-driven part.
Electroluminescence display panel comprises: first switchgear 100 is used for responding the conversion of signals data-signal of the grid line GL that offers unit picture element; Capacitor 110 has the first terminal and second terminal, and the first terminal is connected with the lead-out terminal of first switchgear 100, and second terminal is connected with power supply terminal Vdd, uses the data voltage of receiving by first switchgear 100 to charge; Second switch device 120 is connected with power supply terminal, and the voltage that is used in the first terminal induction of capacitor 110 is changed; Electroluminescent part 130 uses the voltage by second switch device 120 to come luminous.
First and second switchgears 100 and 200 are respectively PMOS transistor P1 and P2.
Explain the method that is used to operate electroluminescence display panel of the present invention with the circuit among Figure 16 below, described circuit does not have light separately to suppress part.Reference time figure explains the operation of the electroluminescence display panel with unit picture element shown in Figure 16.
With reference to Figure 17, applying data voltage to source line SL, promptly, during video signal, specify between normal epoch during ' N ' and black data ' B ', True Data voltage " D " is applied to ' N ' between normal epoch, black data voltage ' Z ' is applied to ' B ' during the black data.
Can set up between normal epoch during ' N ' and black data ' B ' by the timing controlled of timing controller (not shown), timing controller provides grid drive part and the desired signal of data-driven part.
The black data voltage ' Z ' that is used to disconnect second switch device 120 is to make the voltage of capacitor 110 with the fixed intervals discharge, is preferably in from (threshold voltage of supply voltage-second switch device) in the scope of (supply voltage).
Interpreter operation in more detail below.The grid drive part provides gate signal G1-G5 to many grid line GL gradually, is used to connect first switchgear 100, and the data-driven part provides True Data signal ' D ' by first switchgear 100 that is driven by gate signal G1-G5 to electroluminescence display panel.Then, along with the electric charge of True Data signal D is capacitor 110 chargings, second switch device 120 is connected, and makes electroluminescent part 130 luminous time durations.
In that most preferred embodiment is used for operating the method for electroluminescence display panel according to the present invention, each frame is divided between normal epoch during ' N ' and black data ' B ', apply True Data voltage ' D ' and black data voltage ' Z ' to it.
Each gate signal G1-G5 is divided into the first grid signal 200 and second gate signal 300, is loaded on the grid line GL, first grid signal 200 is applied to ' N ' between normal epoch, and second gate signal 300 is applied to ' B ' during the black data.
True Data voltage D is applied on the source line of N between normal epoch, and black data voltage Z is applied on the source line of B during the black data.The electroluminescence display panel display image repeats to disconnect electroluminescent part 130 with fixed intervals simultaneously.
When hypothesis begins the luminous moment from electroluminescent part 130, promptly, apply the moment of first grid signal 200, to the moment that electroluminescent part 130 disconnects, that is, apply the moment of second gate signal, this time durations is the words of t2, might carry out brilliance control by t2 during the control time, thereby during the fluorescent lifetime of control electroluminescent part 130.
When requiring with low-power mode driving electroluminescent part 130, control the t2 time durations short, drive with effective low-power mode and mate with the whole gray level balance simultaneously.
As mentioned above, electroluminescence display panel of the present invention and be used for its method of operation and have following excellent The point.
The first, by after the operation of former frame 1f, but the time before the operation of present frame 2f The data voltage that will be stored in during this time in the capacitor 110 of former frame discharges fully, prevents electroluminescent Part 130 is luminous, can suppress bluring on the screen, thereby improves picture quality.
The second, by t1 during the control time until enable signal E was provided before next frame, the control electricity Between the light emission period of photoluminescence part 130, allow control brightness.
The 3rd, when requiring the low-power mode driver of electroluminescent part 130, with the t1 time durations Control shortly, carry out effective low-power mode and drive while and whole gray level balance coupling.
Can make the fine definition electroluminescence display panel, it can promptly make up the number according to electricity to capacitor Press, and be presented at whether provide the vision signal with low-light level in the present frame.
To those skilled in the art, obviously can carry out numerous modifications and variations, and not deviate from the spirit or scope of the present invention in the method that the device neutralization that is used for controlling the liquid crystal expansion is used to make LCD of the present invention.Like this, the present invention can cover all modifications of the present invention and variation, as long as in the scope of appending claims and content of equal value.
Claims (3)
1. method that is used to operate electroluminescence display panel, described electroluminescence display panel has: a plurality of unit picture elements; All be arranged to grid line intersected with each other and source line; First switchgear is used to respond the gate signal translation data signal that offers grid line; Capacitor is used for data voltage being provided and applying voltage to it by first switchgear; The second switch device is connected with power supply voltage terminal, by changing at the voltage of capacitor induction; Electroluminescent part uses the supply voltage that provides by the second switch device luminous, and described method comprises:
Each frame is divided into normal interval and black data interval;
During the normal interval, apply data voltage, and apply black data voltage to the source line in black data interim to the source line;
Enable the grid line of a plurality of unit picture elements in the normal interval gradually, during the normal interval, applying first grid signal, and enable the grid line of a plurality of unit picture elements at interval gradually, to apply second gate signal to grid line in black data interim at black data to grid line; With
When enabling grid line, apply black data voltage to the source line at interval at black data, being used for that display image disconnects the second switch device simultaneously so that electroluminescent part repeats to disconnect with fixed intervals, can be the voltage that is used to disconnect the second switch device to the black data voltage of capacitor discharge wherein.
2. method according to claim 1, wherein, gate signal is divided into the first grid signal and second gate signal.
3. according to the process of claim 1 wherein, black data voltage is until the value in the scope of supply voltage from the threshold voltage that is higher than the second switch device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KRP200186065 | 2001-12-27 | ||
| KR10-2001-0086065A KR100434326B1 (en) | 2001-12-27 | 2001-12-27 | Method for operating electroluminescent display panel |
| KRP200187831 | 2001-12-29 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021593345A Division CN1293421C (en) | 2001-12-27 | 2002-12-26 | Electroluminescence display panel and method for operating it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1901015A CN1901015A (en) | 2007-01-24 |
| CN100507995C true CN100507995C (en) | 2009-07-01 |
Family
ID=32214166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100984504A Expired - Lifetime CN100507995C (en) | 2001-12-27 | 2002-12-26 | Electroluminescent display panel and method for operating the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100434326B1 (en) |
| CN (1) | CN100507995C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9921425D0 (en) * | 1999-09-11 | 1999-11-10 | Koninkl Philips Electronics Nv | Active matrix electroluminescent display device |
| KR101019047B1 (en) * | 2003-12-23 | 2011-03-04 | 엘지디스플레이 주식회사 | Organic Electroluminescent Device And Driving Method Thereof |
| KR101068002B1 (en) * | 2004-05-31 | 2011-09-26 | 엘지디스플레이 주식회사 | Driving unit of orgnic electroluminescence display and method of driving the same |
-
2001
- 2001-12-27 KR KR10-2001-0086065A patent/KR100434326B1/en active IP Right Grant
-
2002
- 2002-12-26 CN CNB2006100984504A patent/CN100507995C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1901015A (en) | 2007-01-24 |
| KR20030055933A (en) | 2003-07-04 |
| KR100434326B1 (en) | 2004-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100483495C (en) | Organic electroluminous device and method of driving said device | |
| CN1293421C (en) | Electroluminescence display panel and method for operating it | |
| CN100592363C (en) | Organic light emitting display | |
| CN100444229C (en) | Organic light emitting display | |
| CN100573638C (en) | Display panel, the active display that uses this display panel and driving method thereof | |
| US8199079B2 (en) | Demultiplexing circuit, light emitting display using the same, and driving method thereof | |
| KR100734808B1 (en) | Pixel driving circuit with threshold voltage compensation | |
| EP1274065A2 (en) | Circuit and method for driving display of current driven type | |
| JP5636147B2 (en) | Active matrix display device | |
| KR101674479B1 (en) | Organic Light Emitting Display Device | |
| US20060044236A1 (en) | Light emitting display and driving method including demultiplexer circuit | |
| CN100458501C (en) | LCD device | |
| US20060125738A1 (en) | Light emitting display and method of driving the same | |
| US20070229413A1 (en) | Electro-optical device, method for driving electro-optical device, and electronic apparatus | |
| CN102467872A (en) | Organic light emitting display and method of driving the same | |
| EP2178073A1 (en) | Organic light emitting display | |
| KR101683215B1 (en) | Organic Light Emitting Display Device and Driving Method Thereof | |
| CN100399391C (en) | Method and appts. of driving electroluminescent display device | |
| US8400378B2 (en) | Electro-luminescence pixel, panel with the pixel, and device and method for driving the panel | |
| CN114120904A (en) | Display device | |
| KR20230056076A (en) | Display device and driving method thereof | |
| CN100507995C (en) | Electroluminescent display panel and method for operating the same | |
| CN100507993C (en) | Light emitting system, and electronic equipment | |
| CN102142228A (en) | Display device, method of driving the display device, and electronic device | |
| CN115588410A (en) | Display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |
|
| CX01 | Expiry of patent term |