CN100373436C - Pixel driving circuit and method for driving display assembly - Google Patents
Pixel driving circuit and method for driving display assembly Download PDFInfo
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- CN100373436C CN100373436C CNB2005100892457A CN200510089245A CN100373436C CN 100373436 C CN100373436 C CN 100373436C CN B2005100892457 A CNB2005100892457 A CN B2005100892457A CN 200510089245 A CN200510089245 A CN 200510089245A CN 100373436 C CN100373436 C CN 100373436C
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Abstract
A pixel driving circuit with threshold voltage and EL power compensation. The pixel circuit includes a storage capacitor, a transferring circuit, a driving element, and a switching circuit. The transferring circuit transfers a data signal or a variable reference signal to a first node of the storage capacitor. The driving element has a first terminal coupled to a first fixed potential and a second terminal coupled to a second node of the storage capacitor. The switching circuit is coupled to a third terminal of the driving element and the second node of the storage capacitor. The switching circuit can be controlled to make the driving element diode-connected in one time period and allowing a driving current to be output to a display element in another time period.
Description
Technical field
The invention relates to the circuit of display panel, and particularly relevant for the pixel-driving circuit that can compensate the supply of critical voltage and power supply.
Background technology
The active-matrix formula has the exciting light diode display for just in the flat-panel screens of future generation of rudiment, compare with active-matrix formula LCD, the active-matrix formula has the exciting light diode display that many advantages are arranged, such as higher contrast ratio, the visual angle of broad, do not need backlight and thin module thickness is arranged, lower power consumption and lower cost, active-matrix formula LCD is by driven, and the active-matrix formula has the exciting light diode display to drive electroluminescence part originally by electric current, the brightness of electroluminescence part is proportional to the electric current that passes through, the variation of the magnitude of current has the luminance uniformity of exciting light diode display that negative influence is arranged for the active-matrix formula, therefore, the quality of pixel-driving circuit is extremely important for image quality.
Fig. 1 illustrates a traditional active-matrix formula the pixel-driving circuit of the 2T1C of exciting light diode display (electric capacity of two transistor AND gates), when a signal SCAN conducting one transistor M1, among the figure with V
DataShown data can be loaded the grid of a P transistor npn npn M2, and are stored in capacitor C
StIn, therefore, it is luminous to have a current drives electroluminescence part of fixing, and has in the exciting light diode display in typical active-matrix formula, and current source is a P type thin film transistor (TFT) (as the M2 among Fig. 1) normally, and grid is a data voltage V
DataControl, and drain electrode and source electrode are connected to V respectively
DdWith electroluminescence part, as shown in Figure 1, the brightness of electroluminescence part is with respect to V
DataFollowing relation is arranged:
Brightness ∝ electric current ∝ (vdd-V
Data-Vth)
2
Wherein, Vth is the critical voltage of transistor M2, and Vdd is a power supply supply voltage.
Because in the low temperature polycrystalline silicon manufacturing process; low-temperature polysilicon film transistor has the variation of critical voltage Vth usually; if critical voltage Vth does not pass through suitable compensation; the active-matrix formula has the exciting light diode display just to have uneven phenomenon generation; moreover; also can produce the problem of brightness irregularities in the online pressure drop of power supply,, make up one and can compensate the image element circuit that critical voltage Vth and power supply supply Vdd and become the important topic of improving image quality in order to solve this problem.
Summary of the invention
Embodiment of the invention exposure one can compensate the image element circuit of critical voltage and power supply supply, can influence pixel current the input transformation (such as: switch critical voltage, power supply supply voltage or both) variation can be compensated, and the fewer influence that is subjected to circuit design of drive current meeting, even it is irrelevant with Vth or Vdd, therefore, the brightness of each pixel is all irrelevant with Vth or Vdd.
The image element circuit that can compensate critical voltage and power supply supply according to the present invention comprises a storage capacitors, one carry circuit, one driving transistors and an on-off circuit, carry circuit is transferred to a data-signal or a variable reference signal first node of this storage capacitors, driving transistors has one first end points to be coupled to one first set potential, there is one second end points to be coupled to the Section Point of this storage capacitors, and there is one the 3rd end points to export a drive current, on-off circuit is coupled to the 3rd end points of this driving transistors and the Section Point of this storage capacitors, and can in a period, make this driving transistors become diode to connect, and make a drive current can in another period, export a display module to.
The method of driving display module of the present invention comprises and applies a reference signal in a switchable circuit, and makes storage capacitors discharge by it; One critical voltage of one data-signal and this driving transistors is loaded on this storage capacitors; And this data-signal that will load and this critical voltage be coupled to this driving transistors, with provide one with the irrelevant drive current of critical voltage to this display module.
Beneficial effect of the present invention is, can make drive current and critical voltage or power supply supply irrelevant, so the brightness of each pixel is also just irrelevant with critical voltage or power supply supply.
Description of drawings
Fig. 1 illustrates a traditional active-matrix formula the pixel-driving circuit of the 2T1C of exciting light diode display (electric capacity of two transistor AND gates);
Fig. 2 shows the pixel-driving circuit structural drawing that can compensate critical voltage and power supply supply according to one of embodiment of the invention;
Fig. 3 illustrates first and second scanning-line signal Scan, ScanX and the variable reference signal V of pixel-driving circuit shown in Figure 2
DSequential chart;
Fig. 4 shows traditional ratio synoptic diagram that makes a variation for critical voltage Vth with electrorheological out-phase foundation embodiment of the invention pixel-driving circuit;
Fig. 5 illustrates the method flow diagram according to the driving display module of one embodiment of the invention;
Fig. 6 is the structural block synoptic diagram of a demonstration according to one embodiment of the invention Display Panel;
Fig. 7 shows according to another embodiment of the present invention pixel-driving circuit figure;
Fig. 8 illustrates scanning-line signal Scan, ScanX and the variable reference signal V of pixel-driving circuit shown in Figure 7
DSequential chart;
Fig. 9 is the structural representation according to one embodiment of the invention reference signal generator;
Figure 10 is the structural representation according to another embodiment of the present invention reference signal generator;
Figure 11 one comprises the electronic installation synoptic diagram of display panel that Fig. 6 discloses.
Symbol description:
Cst～storage capacitors
210～carry circuit, 221～driving transistors
220～on-off circuit A～first node
Data～data-signal V
D～variable reference signal
B～Section Point V
DD～power supply supply voltage
EL～display module V
Ss～earthing potential
211～the first transistor, 213～transistor seconds
Scan～first sweep trace the ScanX～second sweep trace
223～the 3rd transistors 225～the 4th transistor
302～discharge mode, 304～scan pattern
306～light-emitting mode
930,950～Sheffer stroke gate 910,970～with the door
The signal that the perpendicular displacement buffer is produced in VSR1, the VSR2～gate driver circuit
911,913,931,933,951,953,955,971,973～input
ENBV1～first enable signal the ENBV2～second enable signal
110,120～Sheffer stroke gate 130～with the door
121,123,125,127,131,133,135～input
510～storage capacitors is discharged
520～this critical voltage of one first regular supply voltage and this data-signal and this driving transistors is loaded on this storage capacitors
530～the first regular supply voltage, this data-signal and this critical voltage that will load be coupled to this driving transistors
610～pel array, 640～controller
700～electronic installation
Embodiment
The present invention is above-mentioned to be become apparent with other purpose, feature and advantage in order to allow, and preferred embodiment cited below particularly and conjunction with figs. are described in detail below.
Fig. 2 shows the pixel-driving circuit structural drawing that can compensate critical voltage and power supply supply according to one of the embodiment of the invention, and pixel-driving circuit comprises a storage capacitors Cst, a carry circuit 210, a driving transistors 221 and an on-off circuit 220.Carry circuit 210 is coupled to the first node A of this storage capacitors Cst, and with a data-signal Data or a variable reference signal V
DBe transferred to the first node of this storage capacitors, variable reference signal V
DIt can be a pulsed reference signal, driving transistors 221 is a P type MOS (metal-oxide-semiconductor) transistor, there is one first end points (source electrode) to be coupled to one first set potential, there is one second end points (grid) to be coupled to the Section Point B of this storage capacitors Cst, more particularly, this first set potential is power supply supply voltage V
DD, on-off circuit 220 is coupled to the 3rd end points (drain electrode) of this driving transistors 221, and on-off circuit 220 can be used to make 221 one-tenth diodes of driving transistors to connect (diode-connected), and just grid communicates with drain electrode; One display module EL is coupled to on-off circuit 220, and is preferable, and display module EL can be an electroluminescence part, and in addition, the negative electrode of display module EL is coupled to one second set potential, and more particularly, this second set potential is an earthing potential V
Ss
On-off circuit 220 according to this embodiment of the present invention comprises the 3rd transistor 223 and the 4th transistor 225, as shown in Figure 2, the the 3rd and the 4th transistor is respectively a N type MOS (metal-oxide-semiconductor) transistor and a P type MOS (metal-oxide-semiconductor) transistor, the 3rd transistor 223 has one first end points (source electrode) to be connected to the anode of this display module EL, and its second end points (grid) and the 3rd end points (drain electrode) are connected to the 3rd end points (drain electrode) of one second sweep trace ScanX and this driving transistors 221 respectively, the 4th transistor has one first end points (drain electrode) to be coupled to these grade in an imperial examination three end points (drain electrode) of this driving transistors 221 and the 3rd transistor 223, its second end points (source electrode) is connected to this Section Point B of this storage capacitors Cst and this second end points (grid) of this driving transistors 221, and there is one the 3rd end points (grid) to be connected to one first sweep trace Scan, more particularly, the 3rd transistor 223 and the 4th transistor 225 are thin film transistor (TFT), preferable, these thin film transistor (TFT)s are polycrystalline SiTFT, higher current driving ability can be provided, when the first sweep trace Scan was pulled to low level, the 4th transistor 225 in the on-off circuit 220 can make driving transistors 221 become the transistor that a diode connects (diode-connected).
Fig. 3 illustrates first and second scanning-line signal Scan, ScanX and the variable reference signal V of pixel-driving circuit shown in Figure 2 200
DSequential chart, the then last light-emitting mode of pixel-driving circuit is as variable reference signal V
DBe pulled to high level and sweep signal Scan and ScanX and maintain high level, the pixel-driving circuit 200 in Fig. 2 can operate in a discharge mode 302, in this discharge mode, and the variable reference signal V of a high level
DCan be input to the first node A of storage capacitors Cst, make transistor 22 3 conductings and transistor 225 is closed, the electric charge that is stored in the storage capacitors Cst just can discharge in discharge mode, and the discharge of storage capacitors Cst can be guaranteed driving transistors 221 and the 4th normal running of transistor 225 in subsequent step that diode connects.
After the discharge of the storage capacitors that continues Cst, sweep trace Scan and ScanX are pulled to low level, pixel-driving circuit 200 can enter scan pattern 304 then, when first and second sweep trace Scan and ScanX are pulled to low level, transistor 211 and 225 conductings and transistor 213 and 223 is closed, because transistor 211 and 225 conductings, the voltage of the first node A of storage capacitors Cst equals the voltage V of data-signal Data
Data, and the voltage of the Section Point B of storage capacitors Cst equals Vdd-Vth, and wherein, Vth is the critical voltage of driving transistors 221, and the cross-pressure that therefore is stored in storage capacitors is V
A-V
B=V
Data-V
Dd+ V
Th
When the first sweep trace Scan and the second sweep trace ScanX were pulled to high level, scan pattern 304 finished, and pixel-driving circuit 200 can enter light-emitting mode 306, in addition, when scan pattern 304 finishes, reference signal V
DBe pulled to low level, because the first sweep trace Scan maintains high level, and the second sweep trace ScanX also is pulled to high level, and transistor 211 and 225 is closed, and transistor 213 and 223 conductings, because V
DBe pulled to low level, transistor 213 meeting conductings, the voltage V of the first node A of storage capacitors Cst
AAlso can be pulled to low level, because the cross-pressure of storage capacitors can't change moment, so the voltage V of the Section Point B of storage capacitors Cst
BAlso just become Vdd-V
Data-Vth, the electric current of the display module of flowing through is proportional to (Vsg-Vth)
2, just be proportional to V
Data 2, the power supply supply Vdd of the electric current of the display module of therefore flowing through and the critical voltage Vth of driving transistors 221 and driving transistors 221 is irrelevant, and the operation meeting of aforementioned pixel-driving circuit repeats again and again, to control the luminous of pixel.
Fig. 4 shows traditional ratio synoptic diagram that makes a variation for critical voltage Vth with electrorheological out-phase foundation embodiment of the invention pixel-driving circuit, with critical voltage be 1.4 volts as benchmark, in traditional pixel-driving circuit, when critical voltage departs from 1.4 volts, the amount of variability highly significant of electric current, and in the pixel-driving circuit of the foundation embodiment of the invention, its electric current amount of variability and traditional pixel-driving circuit compare down can say so very little.
Fig. 7 shows the pixel-driving circuit according to the present invention one second embodiment, its structure is similar to pixel-driving circuit shown in Figure 2, the first sweep trace Scan and the second sweep trace ScanX that difference is in Fig. 7 are connected to each other, and controlled by same signal Scan, Fig. 8 illustrates scanning-line signal Scan, ScanX and the variable reference signal V of pixel-driving circuit shown in Figure 7
DSequential chart.
Herein, the invention provides the embodiment of reference signal generator, one embodiment of reference signal generator comprises two Sheffer stroke gates 930,950 and two and door 910,970, as shown in Figure 9, signal VSR1 and VSR2 be admitted to first with the door 910 two the input 911 and 913, wherein VSR1 and VSR2 represent the signal that the perpendicular displacement buffer is produced in the gate driver circuit, this first imports 933 with door 910 output signal and first input 931 and second that the first enable signal ENBV1 is sent to first Sheffer stroke gate 930 respectively, and produce the first sweep signal ScanX, first with door 910 output signal and enable signal ENBV1, ENBV2 is sent to the input 953 of second Sheffer stroke gate 950,951 and 955, therefore second Sheffer stroke gate 950 produces one second sweep signal Scan, first is sent to second respectively with door 910 output signal and the second enable signal ENBV imports 971 with first input 973 and second of door 970, thereby a reference signal V can be provided
D
Figure 10 shows another embodiment of reference signal generator, this reference signal generator embodiment comprise two Sheffer stroke gates 110,120 and one and the door 130, signal VSR1, VSR2, ENBV1 and ENBV2 are sent to the input 123,125,121 and 127 of second Sheffer stroke gate 120 respectively, therefore second Sheffer stroke gate produces one second sweep signal Scan, signal VSR1, VSR2 and ENBV2 are sent to the input 131,133 and 135 with door 1 30 respectively, therefore produce reference signal V
D
In addition, embodiments of the invention provide a display panel, as shown in Figure 6, display panel 600 comprises a pel array 610 and a controller 640, and pel array comprises a plurality of aforesaid pixel-driving circuits, controller is coupled to this pel array, and the operation of control storage capacitors, carry circuit, driving transistors and on-off circuit, in addition, as shown in figure 11, the present invention also provides an electronic installation 700, comprises display panel as shown in Figure 6.
Fig. 5 illustrates the method according to the driving display module of one embodiment of the invention, and this driving method originates in the discharge mode storage capacitors is discharged step 510; Discharge mode betides before the scan pattern, and when reference signal is switched for the first time, and when the one scan pattern begins, finish.Thereafter, a critical voltage of a data-signal, this driving transistors 221 and a fixed voltage are loaded in this storage capacitors in scan pattern, step 520.Then, this data-signal, this critical voltage and the fixed voltage that loads is coupled to this driving transistors, to provide a drive current that has nothing to do with critical voltage to this display module, step 530.More particularly, be an electroluminescence part according to the display module of the embodiment of the invention, to switch when taking place when the second time of reference signal, scan pattern finishes, and pixel-driving circuit just enters light-emitting mode.
Preferable, the switching second time of reference signal betides before the scan pattern end, to obtain preferable image quality, in addition, the grid of driving transistors is connected to storage capacitors, and its source electrode is connected to set potential, more particularly, this set potential is a power supply supply current potential.
The embodiment of the invention provides a pixel-driving circuit that can compensate the supply of critical voltage and power supply, critical voltage, power supply supply or both variation can be compensated, beneficial effect is, make drive current and critical voltage or power supply supply irrelevant, so the brightness of each pixel is also just irrelevant with critical voltage or power supply supply.
Though the present invention has done explanation as above with preferred embodiment; but it is not in order to limit the present invention; any those skilled in the art; in not breaking away from method of the present invention and scope; can do various replacements and modification, so protection domain of the present invention being as the criterion with defined in claims.
Claims (18)
1. pixel-driving circuit is characterized in that comprising:
One storage capacitors has first and second node;
One carry circuit is coupled to the first node of described storage capacitors, and described carry circuit is transferred to a data-signal or a variable reference signal first node of described storage capacitors; Described carry circuit comprises: a first transistor, and there is one first end points to receive described data-signal, there is one second end points to be connected to one first sweep trace, and has one the 3rd end points to be coupled to the described first node of described storage capacitors; And a transistor seconds, there is one first end points to receive described variable reference signal, there is one second end points to be connected to one second sweep trace, and has one the 3rd end points to be coupled to the described first node of described storage capacitors;
One driving transistors has one first end points to be coupled to one first set potential, has one second end points to be coupled to the Section Point of described storage capacitors, and has one the 3rd end points to export a drive current; And
One on-off circuit, be coupled to described the 3rd end points of described driving transistors and the Section Point of described storage capacitors, and can in a period, make described driving transistors become diode to connect, and make a drive current can in another period, export a display module to; Described on-off circuit comprises: one the 3rd transistor, and there is one first end points to be connected to described display module, there is one second end points to be connected to one second sweep trace, and has one the 3rd end points to be connected to the 3rd end points of described driving transistors; And one the 4th transistor, there is one first end points to be coupled to described driving transistors and the described the 3rd transistorized described the 3rd end points, there is one second end points to be connected to the described Section Point of described storage capacitors and described second end points of described driving transistors, and has one the 3rd end points to be connected to one first sweep trace.
2. a kind of pixel-driving circuit according to claim 1 is characterized in that: described variable reference signal is a pulsed reference signal.
3. a kind of pixel-driving circuit according to claim 1 is characterized in that: described first and second transistor is respectively a P type MOS (metal-oxide-semiconductor) transistor and N type MOS (metal-oxide-semiconductor) transistor.
4. a kind of pixel-driving circuit according to claim 1 is characterized in that: described first and second transistor is all P type MOS (metal-oxide-semiconductor) transistor.
5. a kind of pixel-driving circuit according to claim 3 is characterized in that: described first and second sweep trace has the pulse of identical polar.
6. a kind of pixel-driving circuit according to claim 4 is characterized in that: described first and second sweep trace has the pulse of opposed polarity.
7. a kind of pixel-driving circuit according to claim 6 is characterized in that: described second sweep trace has a pulse, and its concluding time is more late than described first sweep trace.
8. a kind of pixel-driving circuit according to claim 1 is characterized in that: the described the 3rd and the 4th transistor is respectively a N type MOS (metal-oxide-semiconductor) transistor and P type MOS (metal-oxide-semiconductor) transistor.
9. a kind of pixel-driving circuit according to claim 1 is characterized in that: the described the 3rd and the 4th transistor is all P type MOS (metal-oxide-semiconductor) transistor.
10. a kind of pixel-driving circuit according to claim 1 is characterized in that also comprising that a reference signal generator is coupled to described carry circuit.
11. a kind of pixel-driving circuit according to claim 10 is characterized in that: described reference signal generator comprises:
One first with door, have two inputs to receive output signal, and described first produces an output signal with door from the perpendicular displacement buffer;
One first Sheffer stroke gate, have one first input receive from described first with the described output signal of door, and have one second input to receive one first enable signal, and described first Sheffer stroke gate produces one first sweep signal and gives second sweep trace;
One second Sheffer stroke gate has three inputs, receive respectively from described first with output signal, described first enable signal and one second enable signal of door, and described second Sheffer stroke gate produces one second sweep signal to first sweep trace; And
One second with door, have one first input receive from described first with the described output signal of door, and have one second input to receive described second enable signal, and described second produces a reference signal with door.
12. a kind of pixel-driving circuit according to claim 10 is characterized in that described reference signal generator comprises:
One first Sheffer stroke gate the signal of two input receptions from the perpendicular displacement buffer is arranged, and have one the 3rd input to receive one first enable signal, and described first Sheffer stroke gate produces one first sweep signal to second sweep trace;
One second Sheffer stroke gate has the signal of two input receptions from the perpendicular displacement buffer, and has two inputs to receive described first enable signal and one second enable signal respectively, and described second Sheffer stroke gate produces one second sweep signal and gives first sweep trace; And
One with door, have two inputs to receive signal, and have one the 3rd input to receive described second enable signal from the perpendicular displacement buffer, describedly produce a reference signal with door.
13. a method that drives display module is characterized in that comprising step:
Apply a reference signal in a switchable circuit, and make storage capacitors discharge by it;
This switchable circuit is a carry circuit, is coupled to the first node of described storage capacitors, and described carry circuit is transferred to a data-signal or a variable reference signal first node of described storage capacitors; Described carry circuit comprises: a first transistor, and there is one first end points to receive described data-signal, there is one second end points to be connected to one first sweep trace, and has one the 3rd end points to be coupled to the described first node of described storage capacitors; And a transistor seconds, there is one first end points to receive described variable reference signal, there is one second end points to be connected to one second sweep trace, and has one the 3rd end points to be coupled to the described first node of described storage capacitors;
One critical voltage of one data-signal and a driving transistors is loaded on described storage capacitors; And
The described data-signal and the described critical voltage that load are coupled to described driving transistors, to provide a drive current that has nothing to do with critical voltage to described display module.
14. a kind of method that drives display module according to claim 13 is characterized in that:
In load step, the described critical voltage of one first regular supply voltage and described data-signal and described driving transistors together is loaded in described storage capacitors; And
In the coupling step, the described first regular supply voltage of loading and the described data-signal and the described critical voltage of loading together are coupled to described driving transistors.
15. a kind of method that drives display module according to claim 14 is characterized in that: before described load step, the reference signal that the discharge step of described storage capacitors originates in a high level puts on described storage capacitors.
16. a kind of method that drives display module according to claim 14 is characterized in that: described load step originates in the one scan signal and puts on a switch module, so that described data-signal is put on described storage capacitors.
17. a kind of method that drives display module according to claim 14 is characterized in that: the step that the described data-signal that will load, described critical voltage and the described first regular supply voltage are coupled to described driving transistors originates in a low level reference signal and puts on after the described storage capacitors step.
18. according to claim 16 or 17 any described a kind of methods that drive display module, its feature is stated from: described reference signal changes its logic state before putting on described storage capacitors by a switch module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59816804P | 2004-08-02 | 2004-08-02 | |
| US60/598,168 | 2004-08-02 | ||
| US60/634,401 | 2004-12-07 | ||
| US11/173,820 | 2005-07-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412935C (en) * | 2006-05-18 | 2008-08-20 | 友达光电股份有限公司 | Organic electroluminescent display device driving circuit and driving method |
| CN101136178B (en) * | 2006-09-01 | 2011-02-16 | 奇美电子股份有限公司 | Image display system |
| KR101407302B1 (en) | 2007-12-27 | 2014-06-13 | 엘지디스플레이 주식회사 | Luminescence dispaly and driving method thereof |
| CN102800273B (en) * | 2011-05-26 | 2015-01-21 | 群创光电股份有限公司 | Pixel structure and display system provided with same |
| TWI471842B (en) * | 2011-10-05 | 2015-02-01 | Wintek Corp | Control circuit for orginic light emitting diode pixel |
| KR101360767B1 (en) | 2012-08-17 | 2014-02-12 | 엘지디스플레이 주식회사 | Organic light emitting diode display device and method for driving the same |
| CN103700342B (en) * | 2013-12-12 | 2017-03-01 | 京东方科技集团股份有限公司 | OLED pixel circuit and driving method, display device |
| CN104978931B (en) | 2015-07-09 | 2017-11-21 | 上海天马有机发光显示技术有限公司 | Load device and method, display panel, the display of data voltage signal |
| CN107424565B (en) * | 2017-08-24 | 2019-11-26 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED pixel circuit and its driving method, OLED display |
| CN109872670B (en) * | 2017-12-05 | 2021-11-05 | 京东方科技集团股份有限公司 | Display screen, display device, display circuit and brightness compensation method thereof |
| CN108538249B (en) * | 2018-06-22 | 2021-05-07 | 京东方科技集团股份有限公司 | Pixel driving circuit and method and display device |
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| US20040080474A1 (en) * | 2001-10-26 | 2004-04-29 | Hajime Kimura | Light-emitting device and driving method thereof |
| EP1441325A2 (en) * | 2003-01-21 | 2004-07-28 | Samsung SDI Co., Ltd. | Luminescent display, driving method and pixel circuit thereof |
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| US20040080474A1 (en) * | 2001-10-26 | 2004-04-29 | Hajime Kimura | Light-emitting device and driving method thereof |
| EP1441325A2 (en) * | 2003-01-21 | 2004-07-28 | Samsung SDI Co., Ltd. | Luminescent display, driving method and pixel circuit thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
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