CN1497514A - Electronic circuit and its drive method, electro-optic device and its drive metod, electronic instrument - Google Patents
Electronic circuit and its drive method, electro-optic device and its drive metod, electronic instrument Download PDFInfo
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- CN1497514A CN1497514A CNA2003101007156A CN200310100715A CN1497514A CN 1497514 A CN1497514 A CN 1497514A CN A2003101007156 A CNA2003101007156 A CN A2003101007156A CN 200310100715 A CN200310100715 A CN 200310100715A CN 1497514 A CN1497514 A CN 1497514A
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Abstract
Pixel circuits 20 include a driving transistor Qd, a first switching transistor Qs1, a second switching transistor Qs2, a storage capacitor Co, and an organic EL element 21, respectively. Each control circuit TS, which is connected to second electrode E2 of the organic EL element 21 through an electric potential control line Lo and sets the electric potential of the second electrode E2 to a driving voltage Vdd or a cathode voltage Vo, is provided between first and second voltage supply lines La and Lb and the pixel circuits 20 in the rightmost column direction of the pixel circuits arranged on a display panel in a matrix.
Description
Technical field
The present invention relates to driving method, electronic installation, electro-optical device, method of driving electro-optical device and the electronic device of electronic circuit, electronic circuit.
Background technology
In recent years, because organic EL is can realize the electro-optical device of low power consumption, high field angle, high-contrast so wait in expectation with low power-actuated self-emission device.
For example, as one of the type of drive of the electro-optical device with organic EL, electrophoresis element, electronic emission element, there is the driven with active matrix mode.The electro-optical device of driven with active matrix mode is a plurality of pixel circuit configuration rectangular at its display surface board, and each image element circuit has electrooptic cell and is used for supplying with to electrooptic cell the driving transistor of driving electric.
For each image element circuit, there is skew with transistor in described driving in characteristics such as its threshold voltage, so even be provided the data-signal corresponding with same levels, the brightness of electrooptic cell sometimes is also different in each pixel.Particularly when using thin film transistor (TFT) to use transistor as described driving, it is remarkable that the skew of this threshold voltage becomes.Therefore, in image element circuit, be provided with and be used to suppress the transistor (patent documentation 1) of this driving with the characteristics of transistor skew.
[patent documentation 1]
The spy opens the 2001-147659 communique
, if each image element circuit is provided for suppressing the transistor of described driving with the characteristics of transistor skew, decrease in yield then, and also only this also can make the aperture opening ratio of image element circuit.For example when for organic EL, if aperture opening ratio descends, then the part that reduces relatively at aperture opening ratio is necessary to supply with big electric current, thus the power consumption increase, and the lifetime of organic EL.
Summary of the invention
The present invention proposes in order to solve described problem, one of its purpose is: the skew that suppresses transistorized threshold voltage is provided, and can reduces the electronic circuit of the transistorized quantity of using, driving method, electronic installation, electro-optical device, method of driving electro-optical device and the electronic device of electronic circuit.
Electronic circuit of the present invention comprises a plurality of unit circuits that comprise with the lower part: have the first terminal, second terminal and first control the first transistor with terminal; Have the 3rd terminal and the 4th terminal, described the 3rd terminal is connected the transistor seconds on the described the first terminal; Have five terminal and the 6th terminal, described five terminal is connected the electronic component on the described the first terminal; Control described the first terminal and described first control the 3rd transistor with the electrical connection of terminal; Described the 6th terminal can be set at a plurality of current potentials, or can be electrically connected with the current potential of regulation, and disconnected from the current potential TURP of described regulation.
Thus, compared with the past, the transistorized quantity that can cut down the component unit circuit.
Electronic circuit of the present invention comprises a plurality of unit circuits that comprise with the lower part: have the first terminal, second terminal and first control the first transistor with terminal; Have the 3rd terminal and the 4th terminal, described the 3rd terminal is connected the transistor seconds on the described the first terminal; Have five terminal and the 6th terminal, described five terminal is connected the electronic component on the described the first terminal; Control described the first terminal and described first control the 3rd transistor with the electrical connection of terminal; Described the 6th terminal is connected on the control of Electric potentials line, described control of Electric potentials line is set at a plurality of current potentials or controls the electrical connection of current potential and the disconnected control circuit of TURP of described control of Electric potentials line and regulation.
Thus, compared with the past, the transistorized quantity that can cut down the component unit circuit.
In this electronic circuit, wish that the transistor that comprises in the described constituent parts circuit is described the first transistor, described transistor seconds, described the 3rd transistor.
Thus, the transistorized quantity of component unit circuit is compared with the past, can reduce the transistor of a use.
In this electronic circuit, can connect capacity cell on terminal in described first control.
Thus, can flow to the levels of current of electronic component according to charge stored amount control in the capacity cell.
In this electronic circuit, described control circuit is the 4th transistor with the 9th terminal and the tenth terminal; Described the 9th terminal is connected on described the 6th terminal by described control of Electric potentials line, and described the tenth terminal is connected on the supply line of the current potential of supplying with described a plurality of current potentials or described regulation.
Thus, can constitute control circuit easily.
In this electronic circuit, described electronic component can be a current driving element.
Thus, can cut down the transistorized quantity that constitutes unit circuit with current driving element.
Electronic circuit of the present invention comprises: electronic component; Have the first terminal and second terminal and control and use terminal, described the first terminal to be connected an end of described electronic component, control the first transistor of the levels of current that offers described electronic component by conducting state; Be connected the transistor seconds on the described the first transistor; It is the control circuit that is connected on the other end of described electronic component, promptly control, stream flow through the first electric current route that comprises described the first transistor and described transistor seconds during in, do not flow to described electronic component, under the state that described transistor seconds ends, electric current flows through the control circuit of the second electric current route that comprises described the first transistor and described electronic component.
Thus, can cut down the transistorized quantity of component unit circuit.
In this electronic circuit, can also comprise: be connected described control with on the terminal, keep the capacity cell of the quantity of electric charge corresponding with the levels of current of the electric current that flows through the described first electric current route.
In the driving method of electronic circuit of the present invention, this electronic circuit has: electronic component; Have the first terminal and second terminal and use terminal with control, described the first terminal is connected the first transistor on the described electronic component; Be connected the transistor seconds on the prime number the first terminal; Comprise: is the other end potential setting of described electronic component the current potential that electric current does not flow to described electronic component, and, the levels of current corresponding charge amount with electric current by the described first electric current route is stored into step in the described capacity cell at least to the first electric current route supplying electric current that comprises described the first transistor and described transistor seconds; Is the potential setting of the other end of described electronic component the current potential that electric current flows through this electronic component, and supplies with the step of the electric current of the levels of current corresponding with the described quantity of electric charge to described electronic component.
Thus, can drive the electronic circuit of the number of transistors that can cut down the component unit circuit.
Electronic installation of the present invention has many first signal wires, many secondary signal lines and a plurality of unit circuit, described a plurality of unit circuit comprises respectively: have first electrode and second electrode, according to the electronic component of the levels of current driving of flowing through described first electrode and the described second interelectrode electric current; Be connected on described first electrode, control the first transistor of described levels of current by conducting state; Be connected with described the first transistor, and by the control signal of supplying with according to one first signal wire from described many first signal wires, become conducting state, be electrically connected the secondary signal line in the described many secondary signal lines and the transistor seconds of described the first transistor; Keep and the corresponding quantity of electric charge of supplying with from described first signal wire of current signal, determine the capacity cell of the conducting state of described the first transistor; At least described transistor seconds be conducting state during be the potential setting of described second electrode that electric current does not flow to described electronic component, perhaps described second electrode from the power supply potential TURP from.
Thus, can provide and to have a plurality of electronic installations of having cut down the unit circuit of the number of transistors of using compared with the past.
Electro-optical device of the present invention has multi-strip scanning line, many data lines, a plurality of unit circuit and many power leads, described a plurality of unit circuit comprises respectively: have the first terminal, second terminal and first control and use terminal, described second terminal to be connected the first transistor on the power lead in described many power leads; Have the 3rd terminal and the 4th terminal and the second control terminal, described the 3rd terminal is connected on the described the first terminal, described the 4th terminal is connected on the data line in described many data lines, and described second control is connected transistor seconds on the sweep trace in the described multi-strip scanning line with terminal; Have five terminal and the 6th terminal, described five terminal is connected the electrooptic cell on the described the first terminal; Have the 7th terminal and the 8th terminal, described the 7th terminal is connected described first and controls with the capacity cell on the terminal; Control described the first terminal and described first control the 3rd transistor with the electrical connection of terminal; The control of Electric potentials line that is connected with described the 6th terminal of the other unit circuit of described a plurality of unit circuits with described the 6th terminal; Described control of Electric potentials line is set at a plurality of current potentials or controls the electrical connection and the disconnected control circuit of TURP of the current potential of described control of Electric potentials line and regulation.
Thus, can provide and to have a plurality of electro-optical devices of having cut down the unit circuit of the number of transistors of using compared with the past.Thus, can improve the aperture opening ratio of image element circuit, thus the power consumption of electro-optical device can be reduced, and can reduce to offer the electric current of electrooptic cell, so can prolong the life-span of electrooptic cell.
In this electro-optical device, wish that the transistor that comprises in the described constituent parts circuit is described the first transistor, described transistor seconds, described the 3rd transistor.
Thus, can provide and to have a plurality of electro-optical devices of having cut down the unit circuit of the number of transistors of using compared with the past.
In this electro-optical device, described control circuit is the 4th transistor with the 9th terminal and the tenth terminal; Described the 9th terminal is connected on described the 6th terminal by described control of Electric potentials line, and described the tenth terminal is connected on the supply line of the current potential of supplying with described a plurality of current potentials or described regulation.
Thus, can constitute control circuit easily.
In this electro-optical device, described electrooptic cell is the EL element that luminescent layer is made of organic material.
Thus, can cut down the number of transistors of the unit circuit that constitutes electro-optical device with organic EL.
In this electro-optical device, a sweep trace in described multi-strip scanning line has disposed homochromy electrooptic cell.
Thus, can provide the electro-optical device that can carry out colored demonstration that lacks more in the past than the transistor that uses.
In the method for driving electro-optical device of the present invention, this electro-optical device comprises multi-strip scanning line, many data lines, a plurality of unit circuit and many power leads; Described a plurality of unit circuit comprises respectively: according to first electrode and the second interelectrode potential difference (PD), and the electrooptic cell of performance optical function; Having the first terminal, second terminal and first control uses terminal, described the first terminal to be connected the first transistor on described first electrode; Being connected described first controls with the capacity cell on the terminal; Have the 3rd terminal and the 4th terminal and the second control terminal, described the 3rd terminal is connected on the described the first terminal, described the 4th terminal is connected on the data line in described many data lines, and described second control is connected transistor seconds on the sweep trace in the described multi-strip scanning line with terminal; Comprise: the potential setting of described second electrode is the current potential that described electrooptic cell does not show optical function, and use the terminal feeding sweep signal to described second control by a sweep trace in the described multi-strip scanning line, making described transistor seconds is conducting state, supply with the data-signal that as electric current provide by described transistor seconds to described the first transistor from a described data line, storing first step in the described capacity cell into described data-signal corresponding charge amount; Provide sweep signal to described second control with terminal by described sweep trace, making described transistor seconds is cut-off state, and is the potential setting of described second electrode current potential of described electrooptic cell performance optical function, according to being stored in the described quantity of electric charge in described capacity cell voltage or the electric current of levels of current second step that offers described electrooptic cell by described first electrode with conducting state correspondent voltage level described the first transistor setting.
Thus, can drive the electro-optical device of the number of transistors that can cut down the component unit circuit.
In this method of driving electro-optical device, described a plurality of unit circuits also comprise the described the first terminal of control and described first control electrical connection of terminal and the 3rd transistor that TURP breaks respectively; Carry out described first step during at least a portion during in, be conducting state by making described the 3rd transistor, be electrically connected described the first terminal and terminal is used in described first control; Carry out described second step during at least a portion during in, be cut-off state by making described the 3rd transistor, TURP is used terminal from described the first terminal and described first control.
Thus, in first step, can make the maintenance quantity of electric charge corresponding in the capacity cell with data-signal, and in second step, can be according to the quantity of electric charge that keeps in the described capacity cell, to the electrooptic cell supplying electric current.
In this method of driving electro-optical device, described electrooptic cell is an organic EL.
Thus, in the electro-optical device with unit circuit of having cut down the number of transistors of using compared with the past, to drive the electrooptic cell that is provided with in its unit circuit be the electro-optical device of organic EL.
Electronic device of the present invention has been installed described electro-optical device.
Thus, supply with the electro-optical device of unit circuit of the electric current corresponding having, can provide to have the electronic device that the transistor that constitutes its unit circuit compares the electro-optical device of in the past having cut down with the data-signal of supplying with from the outside to electronic component.Thus, can reduce the occupied area of transistor, so can realize the electro-optical device that aperture opening ratio is high to electronic circuit.Therefore, the power consumption of electronic device can be further reduced, and the yield rate of electronic device can be improved.
Description of drawings
Fig. 1 is the circuit block diagram of circuit structure of the OLED display of expression present embodiment.
Fig. 2 is the display panel of expression embodiment 1 and the circuit block diagram of data line drive circuit inner structure.
Fig. 3 is the circuit diagram of the image element circuit of embodiment 1.
Fig. 4 is the sequential chart that is used to illustrate the image element circuit driving method of embodiment 1.
Fig. 5 is the display panel of expression embodiment 2 and the circuit block diagram of data line drive circuit inner structure.
Fig. 6 is the stereographic map that expression is used to illustrate the portable personal computer structure of embodiment 3.
Among the figure: Co-as the maintenance capacitor of capacity cell; Qs1-as the first switch transistor of transistor seconds; Qs2-as the 3rd transistorized second switch transistor; Qd-as the driving transistor of the first transistor; Qo-as the 4th transistorized cathode voltage transistor; Lo-control of Electric potentials line; TS-control circuit; Xm-data line; Yn-sweep trace; 10-as the OLED display of electro-optical device; 20-as the image element circuit of unit circuit; 21-as the organic EL of electronic component, electrooptic cell or current driving element; 70-as the personal computer of electronic device.
Embodiment
(embodiment 1)
Below, with reference to the embodiment 1 that Fig. 1～the present invention is specialized in 4 explanations.Fig. 1 is the circuit block diagram of expression as the OLED display circuit structure of electro-optical device.Fig. 2 is that expression is as the display surface board of electronic circuit and the circuit block diagram of data line drive circuit inner structure.Fig. 3 is the circuit diagram of image element circuit.Fig. 4 is the sequential chart that is used for the pixels illustrated circuit drive method.
OLED display 10 has signal generating circuit 11, display surface board 12, scan line drive circuit 13, data line drive circuit 14 and power source line control circuit 15.The signal generating circuit 11 of OLED display 10, scan line drive circuit 13, data line drive circuit 14 and power source line control circuit 15 can be respectively be made of electronic component independently.For example, signal generating circuit 11, scan line drive circuit 13, data line drive circuit 14 and power source line control circuit 15 can be respectively be made of the semiconductor device of 1 chip.In addition, all or part of of signal generating circuit 11, scan line drive circuit 13, data line drive circuit 14 and power source line control circuit 15 can be made of programmable I C chip, and its function can be realized on software by the program that writes in the IC chip.
Signal generating circuit 11 generates the scan control signal and the data controlling signal that are used for display image on display surface board 12 according to the view data from not shown external device (ED).Signal generating circuit 11 is exported scan control signal scan line drive circuit 13 then, and data controlling signal is exported to data line drive circuit 14.In addition, 11 pairs of power source line control circuits of signal generating circuit, 15 output timing control signals.
Power lead VLd is connected with the first voltage supply line La that the column direction at image element circuit 20 that is configured in display surface board 12 right-hand members extends.The first voltage supply line La is connected on the not shown power supply unit of supplying with driving voltage.Therefore, supply with driving voltage Vdd by the first voltage supply line La and power lead VLd to each image element circuit 20.
Control of Electric potentials line Lo is connected on the control circuit TS.Control circuit TS is connected with the second voltage supply line Lb that the column direction at image element circuit 20 that is configured in display surface board 12 right-hand members extends.The second voltage supply line Lb is connected on the not shown described power supply unit of supplying with cathode voltage Vo.In addition, control circuit TS is connected the power source line control circuit 15 of supplying with the power lead control signal SCn that describes later be used to control control circuit TS by power lead control line F.Driving voltage Vdd is redefined for bigger than cathode voltage Vo.
Scan line drive circuit 13 selects to be configured in a sweep trace among the N bar sweep trace Yn on the display surface board 12 according to the scan control signal from signal generating circuit 11 outputs, to the sweep trace output scanning signal SY1, the SY2 that select ... SYn.
Data line drive circuit 14 has a plurality of single line drives 23 as shown in Figure 2.Each single line drive 23 respectively be configured in display surface board 12 on respective data lines Xm be connected.Data line drive circuit 14 is according to the described data controlling signal from signal generating circuit 11 outputs, generate respectively data current Idata1, Idata2 ... IdataM.Then, data line drive circuit 14 by data line Xm to data current Idata1, the Idata2 of image element circuit 20 these generations of output ... IdataM.Then, if according to data current Idata1, Idata2 ... IdataM has set the internal state of image element circuit 20, this image element circuit 20 just according to this electric current I data1, Idata2 ... the levels of current of IdataM, control offers the drive current Iel of organic EL 21.
As mentioned above, power source line control circuit 15 is connected by power lead control line F with control circuit TS.Power source line control circuit 15 generates the status of electrically connecting (conducting state) of the decision control of Electric potentials line Lo and the first voltage supply line La or the power lead control signal SCn of the disconnected state (cut-off state) of TURP according to the timing control signal from signal generating circuit 11 outputs.In addition, power source line control circuit 15 generates the status of electrically connecting (conducting state) of the decision control of Electric potentials line Lo and the second voltage supply line Lb or the power lead control signal SCn of the disconnected state (cut-off state) of TURP according to the timing control signal from signal generating circuit 11 outputs.
Particularly, power lead control signal SCn is when control of Electric potentials line Lo and the first voltage supply line La are status of electrically connecting (conducting state), making the control of Electric potentials line Lo and the second voltage supply line Lb is the disconnected state (cut-off state) of TURP, when control of Electric potentials line Lo and the first voltage supply line La were the disconnected state (cut-off state) of TURP, the control of Electric potentials line Lo and the second voltage supply line Lb were the signal of status of electrically connecting (conducting state).
And control circuit TS supplies with driving voltage Vdd or cathode voltage Vo by control of Electric potentials line Lo to image element circuit 20 according to power lead control signal SCn.
Below, with reference to the image element circuit 20 of Fig. 3 explanation about the OLED display 10 of such formation.In addition, for convenience of explanation, the image element circuit 20 that is configured between sweep trace Yn and the data line Xm is described.
As shown in Figure 3, image element circuit 20 is made of three transistors, capacity cell and organic EL 21.If describe in detail, then image element circuit 20 has driving transistor Qd, first switch is used transistor Qs2 and kept electricity consumption container C o with transistor Qs1, second switch.The conduction type that drives with transistor Qd is p type (a p raceway groove).In addition, first and second switches are respectively n type (n raceway groove) with the conduction type of transistor Qs1, Qs2.
The source electrode that drives with transistor Qd is connected on the power lead VLd.Drive on the first electrode E1 that drain electrode with transistor Qd is connected to the source electrode of first switch usefulness transistor Qs1 and organic EL 21.
In addition, connecting second switch transistor Qs2 driving with the grid of transistor Qd with between draining.On the grid that drives with transistor Qd, connecting the first electrode D1 that keeps electricity consumption container C o.Keep the second electrode D2 of electricity consumption container C o to be connected on the power lead VLd.
First switch is connected on the data line Xm with the drain electrode of transistor Qs1.First switch is connected on the sweep trace Yn with the grid of second switch with transistor Qs2 with the grid of transistor Qs1.The second electrode E2 of organic EL 21 is connected on the control of Electric potentials line Lo.
On the control of Electric potentials line Lo on the image element circuit 20 that is connected such formation, connecting control circuit TS.In display surface board 12, be configured in the rectangular image element circuit 20 to have formed control circuit TS along configuration between the image element circuit 20 of the column direction configuration of the rightmost side and the first and second voltage supply line La, the Lb.
Control circuit TS is made of with transistor QDD with transistor Qo and driving voltage cathode voltage.Cathode voltage is n type (a n raceway groove) with the conduction type of transistor Qo, and driving voltage is p type (a p raceway groove) with the conduction type of transistor QDD.
And cathode voltage is connected in the drain electrode of driving voltage with transistor QDD with the source electrode of transistor Qo, and is connected on the control of Electric potentials line Lo.Cathode voltage is connected on the second voltage supply line Lb that supplies with cathode voltage Vo with the drain electrode of transistor Qo.Driving voltage is connected on the first voltage supply line La that supplies with driving voltage Vdd with the source electrode of transistor QDD.In addition, cathode voltage is connected to each other with transistor Qo and driving voltage each grid with transistor QDD, and is connected on the power lead control line F.And the power lead control signal SCn that is generated by power source line control circuit 15 offers cathode voltage is used transistor QDD with transistor Qo and driving voltage each grid.
That is, control circuit TS shares for the image element circuit on the line direction that is configured in display surface board 12 20.
In addition, at the first transistor described in the scope of protection of present invention, transistor seconds and the 3rd transistor, for example in the present embodiment, corresponding with transistor Qs1 and second switch with driving respectively with transistor Qs2 with transistor Qd, first switch.In addition, at the first terminal described in the scope of protection of present invention and second terminal, for example in the present embodiment, corresponding with the drain electrode and the driving that drive with transistor Qd respectively with the source electrode of transistor Qd.First control at the first transistor described in the scope of protection of present invention is used terminal with terminal or control, and is for example in the present embodiment, corresponding with the grid that drives with transistor Qd.
At the 3rd terminal described in the scope of protection of present invention, the 4th terminal and the second control terminal; for example in the present embodiment, corresponding with the source electrode and first switch of transistor Qs1 with first switch respectively with the grid of transistor Qs1 with drain electrode, first switch of transistor Qs1.At five terminal described in the scope of protection of present invention, the 6th terminal, for example in the present embodiment, the first electrode E1, the second electrode E2 with organic EL 21 is corresponding respectively.At the 4th transistor described in the scope of protection of present invention, for example corresponding with transistor QDD with cathode voltage in the present embodiment with transistor Qo or driving voltage.
In the OLED display 10 that constitutes like this, if according to power lead control signal SCn, driving voltage becomes status of electrically connecting (conducting state) with transistor QDD, then driving voltage Vdd offers the second electrode E2 of organic EL 21 by control of Electric potentials line Lo, and the second electrode E2 of organic EL 21 becomes the H state.
The driving voltage Vdd that offers this second electrode E2 works as the current potential that does not make organic EL 21 performance optical functions.
At this moment, driving voltage Vdd provides the first electrode E1 of organic EL 21, so become the state that does not have electric current to flow through organic EL 21.Therefore, organic EL 21 is not luminous.
In addition, if according to power lead control signal SCn, cathode voltage becomes status of electrically connecting (conducting state) with transistor Qo, and then cathode voltage offers the second electrode E2 of organic EL 2I by control of Electric potentials line Lo.Cathode voltage Vo is set at littler than driving voltage Vdd, so provide forward bias to organic EL.As a result, offer organic EL 21 by driving the drive current Iel that generates with transistor Qd.And organic EL 21 has determined its brightness according to the levels of current of drive current Iel.
Below, image element circuit 20 driving methods of the OLED display 10 that adopts above-mentioned structure are described with reference to Fig. 4.In Fig. 4, drive cycle Tc means the cycle that the brightness of organic EL 21 is upgraded again and again, and is identical with the frame period.T1 is during data write, and T2 is between light emission period.During drive cycle Tc is write by data between T1 and light emission period T2 constitute.
At first, in image element circuit 20, respectively data write during T1 be the sweep signal SYn of conducting state to first and second switches with transistor Qs1, Qs2 by sweep trace Yn from scan line drive circuit 13.At this moment, provide with the grid of transistor Qo to cathode voltage by power lead control line F from power source line control circuit 15 that to make cathode voltage be the power lead control signal SCn of cut-off state with transistor Qo.
Like this, first and second switches become conducting state with transistor Qs1, Qs2.As a result, data current Idata M offers with transistor Qs1, Qs2 via first and second switches and keeps electricity consumption container C o.As a result, the pairing voltage Vo of levels of current corresponding charge amount of maintenance and data current Idata M in keeping electricity consumption container C o.At this moment, driving is redefined in the saturation region with transistor Qd and works, so the threshold voltage that drives with transistor Qd has been compensated the characteristic deviation that is called degree of excursion.
In addition, at this moment, to make driving voltage be the power lead control signal SCn of conducting state with transistor QDD by providing to control circuit TS from power source line control circuit 15, and driving voltage becomes conducting state with transistor QDD.As a result, driving voltage Vdd offers the second electrode E2 of organic EL 21.
Therefore, the second electrode E2 of organic EL 21 becomes driving voltage Vdd as shown in Figure 4, so organic EL 21 becomes non-positive bias state or reverse bias condition.Therefore, organic EL 21 is not luminous.
Then, during data write after the end of T1, between light emission period among the T2, provide by sweep trace Yn from scan line drive circuit 13 that to make first switch respectively be the sweep signal SYn of cut-off state with transistor Qs2 with transistor Qs1 and second switch.Like this, first switch becomes cut-off state with transistor Qs1 and second switch respectively with transistor Qs2.
In addition, at this moment, be the power lead control signal SCn of conducting state with transistor Qo by making cathode voltage to control circuit TS supply from power source line control circuit 15, cathode voltage becomes conducting state with transistor Qo.As a result, the second electrode E2 of organic EL 21 becomes the L state.
Be organic EL 21 the second electrode E2 as shown in Figure 4, become cathode voltage Vo, the current potential of the second electrode E2 is lower than the first current potential E1, so become the state that positive bias is provided to organic EL 21.
As a result, with T1 during data write in remain on the corresponding size of the voltage Vo that keeps among the electricity consumption container C o drive current Iel flow to organic EL 21.Therefore, organic EL 21 according to data current Idata M with its brightness degree of High Accuracy Control.
As mentioned above, image element circuit 20 is cut down one being formed on its inner number of transistors than in the past, and can be according to the brightness degree of data current Idata M with High Accuracy Control organic EL 21.Therefore, image element circuit 20 can improve yield rate and the aperture opening ratio in the manufacturing of OLED display 10.
Electronic circuit and electro-optical device according to the foregoing description can obtain following feature.
(1) in the present embodiment, constituted image element circuit 20 with transistor Qs1, second switch with transistor Qs2, maintenance electricity consumption container C o and organic EL 21 by driving with transistor Qd, first switch.
Being connected by control of Electric potentials line Lo for a plurality of image element circuit 20 public being provided with the second electrode E2 of organic EL 21, is the potential setting of the second electrode E2 control circuit TS of driving voltage Vdd or cathode voltage Vo.
Thus, the skew of the threshold voltage of image element circuit 20 compensation and degree of excursion etc., and can make and be formed on its inner number of transistors and lack one than in the past image element circuit.As a result, can provide can be with the brightness degree of High Accuracy Control organic EL 21, and can improve the yield rate in the transistorized manufacturing and the OLED display 10 of aperture opening ratio.
(embodiment 2)
Below, with reference to Fig. 5 the embodiment 2 that the present invention specializes is described.In addition, in the present embodiment,, adopt same-sign, omitted specifying of it for the component parts identical with the foregoing description 1.
Fig. 5 is the display surface board 12a of expression OLED display 10 and the circuit block diagram of data line drive circuit 14 inner structures.In the present embodiment, display surface board 12a by the redness of organic EL 21 with radiation ruddiness with image element circuit 20R, have a radiation green glow the green of organic EL 21 with image element circuit 20G, blueness with the organic EL 21 that radiates blue light constitutes with image element circuit 20B.Each redness, green are identical with the circuit structure of image element circuit 20 of explanation among the embodiment 1 respectively with blue circuit structure with image element circuit 20R, 20G, 20B.
If specifically describe, then display surface board 12a disposes homochromy image element circuit 20R, 20G, 20B at the bearing of trend along sweep trace Yn.In addition, constitute red driving with image element circuit 20R with transistor Qd with keep electricity consumption container C o to be connected the redness of supplying with correspondence by power lead VLd respectively using the redness of driving voltage VddR with on the first voltage supply line LaR.In addition, constitute green driving with image element circuit 20G with transistor Qd with keep electricity consumption container C o to be connected green that the green of supplying with correspondence uses driving voltage VddG with the first voltage supply line LaG by power lead VLd respectively.In addition, constitute blue driving with image element circuit 20B with transistor Qd with keep electricity consumption container C o to be connected the blueness of supplying with correspondence by power lead VLd respectively using the green of driving voltage VddB with on the first voltage supply line LaB.
In addition, the red, green, blue look is respectively to constitute the driving of red pixel circuit 20R to use the driving voltage of transistor Qd, constitute the driving voltage of the driving of blue pixel circuit 20B with transistor Qd with the driving voltage of transistor Qd, the driving of formation green pixel circuit 20G with driving voltage VddR, VddG, VddB.
Below, image element circuit 20R, the 20G of the OLED display 10 that has adopted said structure, the driving method of 20B are described.
At first, making red first and second switches with image element circuit 20R from scan line drive circuit 13 respectively by first sweep trace Y1 supply is the first sweep signal SY1 of conducting state with transistor Qs1, Qs2.In addition, provide by control of Electric potentials line Lo from power source line control circuit 15 that to make driving voltage be the power lead control signal SCn of conducting state with transistor QDD.
The result, be configured in redness on the bearing of trend of the first sweep trace Y1 with the connection in the image element circuit 20R first and second switches of the first sweep trace Y1 become conducting state respectively with transistor Qs1, Qs2, and redness becomes driving voltage Vdd with the current potential of the second electrode E2 of organic EL 21.
Under this state, data current Idata offers with transistor Qs2 with transistor Qs1 and second switch by first switch from data line Xm and keeps electricity consumption container C o.As a result, the pairing voltage Vo of levels of current corresponding charge amount with data current IdataM remains among the maintenance electricity consumption container C o.
Then, making red first and second switches with image element circuit 20R from scan line drive circuit 13 respectively by first sweep trace Y1 supply is the first sweep signal SY1 of cut-off state with transistor Qs1, Qs2.In addition, provide by control of Electric potentials line Lo from power source line control circuit 15 that to make cathode voltage be the power lead control signal SCn of conducting state with transistor Qo.
As a result, red with the connection in the image element circuit 20R first and second switches of the first sweep trace Y1 become cut-off state respectively with transistor Qs1, Qs2, and redness becomes cathode voltage Vo with the current potential of the second electrode E2 of organic EL 21.Therefore, becoming to redness provides positive bias with organic EL 21, so provide drive current Ie1 to redness with organic EL 21, the beginning redness is luminous with organic EL 21.
Making green first and second switches with image element circuit 20G from scan line drive circuit 13 respectively by second sweep trace Y2 supply is the first sweep signal SY1 of conducting state with transistor Qs1, Qs2.In addition, provide by control of Electric potentials line Lo from power source line control circuit 15 that to make driving voltage be the power lead control signal SCn of conducting state with transistor QDD.
The result, be configured in green on the bearing of trend of the second sweep trace Y2 with the connection in the image element circuit 20G first and second switches of the second sweep trace Y2 become conducting state respectively with transistor Qs1, Qs2, and green becomes driving voltage Vdd with the current potential of the second electrode E2 of organic EL 21.Under this state, data current Idata offers with transistor Qs2 with transistor Qs1 and second switch by first switch from data line Xm and keeps electricity consumption container C o.As a result, the pairing voltage Vo of levels of current corresponding charge amount with data current Idata M remains among the maintenance electricity consumption container C o.
Then, making green first and second switches with image element circuit 20G from scan line drive circuit 13 respectively by second sweep trace Y2 supply is the second sweep signal SY2 of cut-off state with transistor Qs1, Qs2.In addition, provide by control of Electric potentials line Lo from power source line control circuit 15 that to make cathode voltage be the power lead control signal SCn of conducting state with transistor Qo.
As a result, green with the connection in the image element circuit 20G first and second switches of the second sweep trace Y2 become cut-off state respectively with transistor Qs1, Qs2, and green becomes cathode voltage Vo with the current potential of the second electrode E2 of organic EL 21.Therefore, becoming to green provides positive bias with organic EL 21, so provide drive current Iel to green with organic EL 21, the beginning green is luminous with organic EL 21.
Making blue first and second switches with image element circuit 20B from scan line drive circuit 13 respectively by three scan line Y3 supply is the 3rd sweep signal SY3 of conducting state with transistor Qs1, Qs2.In addition, provide by control of Electric potentials line Lo from power source line control circuit 15 that to make cathode voltage be the power lead control signal SCn of conducting state with transistor Qo.
The result, be configured in blueness on the bearing of trend of three scan line Y3 with the connection in the image element circuit 20B first and second switches of three scan line Y3 become conducting state respectively with transistor Qs1, Qs2, and blueness becomes driving voltage Vdd with the current potential of the second electrode E2 of organic EL 21.Under this state, data current Idata offers with transistor Qs2 with transistor Qs1 and second switch by first switch from data line Xm and keeps electricity consumption container C o.As a result, the pairing voltage Vo of levels of current corresponding charge amount with data current Idata M remains among the maintenance electricity consumption container C o.
Then, making green first and second switches with image element circuit 20B from scan line drive circuit 13 respectively by three scan line Y3 supply is the 3rd sweep signal of cut-off state with transistor Qs1, Qs2.In addition, provide by control of Electric potentials line Lo from power source line control circuit 15 that to make driving voltage be the power lead control signal SCn of conducting state with transistor QDD.
As a result, blue with the connection in the image element circuit 20B first and second switches of three scan line Y3 become cut-off state respectively with transistor Qs1, Qs2, and blueness becomes cathode voltage Vo with the current potential of the second electrode E2 of organic EL 21.Therefore, becoming to blueness provides positive bias with organic EL 21, so provide drive current Iel to blueness with organic EL 21, the beginning blueness is luminous with organic EL 21.
Therefore, in OLED display 10, also can obtain the effect same with described embodiment 1.
(embodiment 3)
Below, with reference to Fig. 6, the application of OLED display 10 in electronic device as the electro-optical device of explanation in embodiment 1 and 2 is described.OLED display 10 can be applied in the various electronic devices such as portable personal computer, mobile phone, digital camera.
Fig. 6 is the stereographic map of the structure of expression portable personal computer.Among Fig. 6, personal computer 70 comprises: have keyboard 71 main part 72, used the display unit 73 of OLED display 10.
At this moment, used the display unit 73 performances effect similarly to Example 1 of OLED display 10.As a result, can provide that have can be with the brightness degree of High Accuracy Control organic EL 21, and can improve OLED display 10 personal computers 70 of yield rate and aperture opening ratio.
In addition, inventive embodiment is not limited to described embodiment, also can be by following enforcement.
In described embodiment, the current potential that provides to the second electrode E2 of organic EL 21 in order to make organic EL 21 not show its optical function is driving voltage Vdd, but be not limited thereto, just passable if organic EL 21 does not show its current potential of optical function.In addition, also can make the second electrode E2 vacant.
In described embodiment, one first voltage supply line La is connected with many power lead VLd, many control of Electric potentials line Lo.Many first voltage supply line La also can be set, it is divided into first voltage supply line La that is connected on many power lead VLd and the first voltage supply line La that is connected on the bar control of Electric potentials line Lo.Thus, the current potential that has alleviated the second electrode E2 that keeps electricity consumption container C o is accompanied by the change of power lead control signal SCn, except the effect of described embodiment, can also stablize the brightness of control organic EL 21.
In described embodiment, in a plurality of image element circuits 20 that are provided with along a sweep trace Yn, share a control circuit TS.Also can be in a plurality of image element circuits 20 of a data line Xm setting, to share a control circuit TS.At this moment, when the driving voltage that constitutes control circuit TS is conducting state with transistor QDD, supply with data current Idata to the image element circuit 20 that is provided with along data line Xm, then, making the cathode voltage that constitutes control circuit TS is conducting state with transistor Qo, makes the organic EL 21 of this image element circuit 20 luminous simultaneously.
Perhaps, also can be in a plurality of image element circuits 20 that are provided with for the multi-strip scanning line, to share control circuit TS.
Thus, can obtain the effect same with described embodiment.
In described embodiment, the source electrode of driving voltage with transistor QDD is connected on first voltage supply line of having supplied with driving voltage Vdd.And, when not making organic EL 21 performance optical functions, supply with driving voltage Vdd by first voltage supply line to the second electrode E2 of organic EL 21, the current potential of the second electrode E2 of organic EL 21 is identical with the first electrode E1, and drive current Iel does not flow to organic EL 21 as a result.
Can be connected the source electrode of driving voltage on the voltage supply line of supplying with the voltage more than the driving voltage Vdd with transistor QDD.And, when not making organic EL 21 performance optical functions, by the current potential of voltage supply line more than the second electrode E2 of organic EL 21 supply driving voltage Vdd, the current potential of the second electrode E2 that makes organic EL 21 makes drive current Iel not flow to organic EL 21 than the first electrode E1 height.Thus, can obtain the effect same with described embodiment.
In described embodiment, the driving of image element circuit 20 is p type (a p raceway groove) with the conduction type of transistor Qd.In addition, first switch is set at n type (n raceway groove) with transistor Qs1 and second switch with the conduction type separately of transistor Qs2.And, the drain electrode that drives with transistor Qd is connected on the anode of organic EL, the second electrode E2 of organic EL is connected on the control of Electric potentials line Lo.
, make that to drive with transistor Qd be the n type, first switch is set at p type (p raceway groove) with transistor Qs1 and second switch with the conduction type separately of transistor Qs2.
At this moment, being connected on the negative electrode of organic EL, the anode of organic EL is connected on the control of Electric potentials line Lo by the driving of described configuration source electrode with transistor Qd.By such formation image element circuit 20, can be applied to image element circuit 20 in the image element circuit of electro-optical device of top formula radiation pattern.
In described embodiment, the grid of first switch with transistor Qs1 is connected on the grid of second switch with transistor Qs2, and is connected on the sweep trace Yn.Also can be connected to first switch independently on the sweep trace with the grid of transistor Qs2 with the grid of transistor Qs1 and second switch.
In described embodiment, constituted control circuit TS with transistor QDD, cathode voltage with transistor Qo by driving voltage.Also can replace driving voltage with transistor QDD, cathode voltage transistor Qo, be used in switchable switch formation control circuit TS between electronegative potential and noble potential.
In addition, in order to improve driving voltage with transistor QDD and cathode voltage driving force, can use buffer circuit or comprise the voltage follower circuit of source follower circuit with transistor Qo.Thus, can obtain the effect same with described embodiment.
In described embodiment, fashionable writing of data, to electronic component is that organic EL 21 has added non-positive bias or reverse bias, but for example in order to make organic EL 21 have the long-life, also can beyond writing of data is fashionable, set add non-positive bias or reverse bias during.
In described embodiment, be provided with the first and second voltage supply line La, Lb at the right-hand member of display surface board 12, but be not limited thereto, for example also can be arranged on the left end of display surface board 12.Thus, can obtain the effect same with described embodiment.
In described embodiment, as unit circuit, be embodied as image element circuit 20, obtain suitable effect, but also can be embodied as the unit circuit that drives organic EL 21 electrooptic cell such as for example LED or FED etc. in addition.Also can be embodied as memory devices such as (particularly MRAM) such as RAM.
In described embodiment, as the current driving element of image element circuit 20, be embodied as organic EL 21, but can be embodied as inorganic EL element.That is, in the inorganic EL display that can be applied to constitute by inorganic EL element.
Claims (20)
1. an electronic circuit comprises a plurality of unit circuits, and described unit circuit comprises:
Has the 1st terminal, the 2nd terminal and the 1st control the 1st transistor with terminal;
Have the 3rd terminal and the 4th terminal, described the 3rd terminal is connected the 2nd transistor on described the 1st terminal;
Have the 5th terminal and the 6th terminal, described the 5th terminal is connected the electronic component on described the 1st terminal;
Control described the 1st terminal and 3rd transistor that be electrically connected of described the 1st control with terminal;
It is characterized in that:
Described the 6th terminal can be set at a plurality of current potentials, or can be electrically connected with the current potential of regulation and can be from the disconnection of the current potential of described regulation electricity.
2. an electronic circuit comprises a plurality of unit circuits, and described unit circuit comprises:
Has the 1st terminal, the 2nd terminal and the 1st control the 1st transistor with terminal;
Have the 3rd terminal and the 4th terminal, described the 3rd terminal is connected the 2nd transistor on described the 1st terminal;
Have the 5th terminal and the 6th terminal, described the 5th terminal is connected the electronic component on described the 1st terminal;
Control described the 1st terminal and 3rd transistor that be electrically connected of described the 1st control with terminal;
It is characterized in that: have:
Described the 6th terminal is connected on the control of Electric potentials line, described control of Electric potentials line is set at a plurality of current potentials or controls being electrically connected and control circuit that electricity disconnects of current potential of described control of Electric potentials line and regulation.
3. electronic circuit according to claim 1 is characterized in that:
The transistor that comprises in the described constituent parts circuit is described the 1st transistor, described the 2nd transistor, described the 3rd transistor.
4. according to any described electronic circuit in the claim 1～3, it is characterized in that:
Connecting capacity cell in described the 1st control on terminal.
5. according to any described electronic circuit in the claim 1～4, it is characterized in that:
Described control circuit is the 4th transistor with the 9th terminal and the 10th terminal,
Described the 9th terminal is connected with described the 6th terminal by described control of Electric potentials line, and described the 10th terminal is connected with the supply line of the current potential of supplying with described a plurality of current potentials or described regulation.
6. according to any described electronic circuit in the claim 1～5, it is characterized in that:
Described electronic component is a current driving element.
7. electronic circuit is characterized in that: comprising:
Electronic component;
Have the 1st terminal, the 2nd terminal and control and use terminal, described the 1st terminal is connected an end of described electronic component, offers the 1st transistor of the levels of current of described electronic component by conducting state control;
The 2nd transistor that is connected with described the 1st transistor;
Be connected with the other end of described electronic component, Control current, make its electric current flow through comprise described the 1st transistor and the described the 2nd transistorized the 1st electric current stream during, do not flow to described electronic component, under the state that described the 2nd transistor is disconnected, make it flow through the control circuit of the 2nd electric current stream that comprises described the 1st transistor and described electronic component.
8. electronic circuit according to claim 7 is characterized in that:
Also comprise: be connected described control with on the terminal, keep the capacity cell of the corresponding quantity of electric charge of levels of current with the electric current that flows through described the 1st electric current stream.
9. the driving method of an electronic circuit is a kind of for comprising electronic component; Have the 1st terminal, the 2nd terminal and control and use terminal, described the 1st terminal is connected the 1st transistor on the described electronic component; The capacity cell that is connected with terminal with described control; The driving method of the 2nd transistorized electronic circuit that is connected with described the 1st terminal is characterized in that: comprising:
Is the potential setting of the other end of described electronic component to make electric current not flow to the current potential of described electronic component, and by to comprising described the 1st transistor and the described the 2nd transistorized the 1st electric current stream supplying electric current at least, accumulating step in the described capacity cell with the levels of current corresponding charge amount of electric current by described the 1st electric current stream;
Is the potential setting of the other end of described electronic component to make electric current flow through the current potential of this electronic component, and supplies with the step of the electric current of the levels of current corresponding with the described quantity of electric charge to described electronic component.
10. an electronic installation has many articles the 1st signal wires, many articles the 2nd signal wires and a plurality of unit circuit, it is characterized in that:
Described a plurality of unit circuit comprises respectively:
Have the 1st electrode and the 2nd electrode, correspondence flows through the levels of current of described the 1st electrode and described the 2nd interelectrode electric current and the electronic component that drives;
Be connected on described the 1st electrode, control the 1st transistor of described levels of current by conducting state;
Be connected with described the 1st transistor, and control signal by corresponding one article of the 1st signal wire supply from described many articles the 1st signal wires, become conducting state, be electrically connected one article of the 2nd signal wire and the described the 1st transistorized the 2nd transistor in described many articles the 2nd signal wires;
Keep and the corresponding quantity of electric charge of supplying with from described the 1st signal wire of current signal, determine the capacity cell of described the 1st transistorized conducting state;
At least described the 2nd transistor be conducting state during the potential setting of described the 2nd electrode is not flowed to described electronic component for making electric current, described the 2nd electrode is disconnected from power supply potential electricity.
11. an electro-optical device has multi-strip scanning line, many data lines, a plurality of unit circuit and many power leads, it is characterized in that:
Described a plurality of unit circuit comprises respectively:
Having the 1st terminal, the 2nd terminal and the 1st control uses terminal, described the 2nd terminal to be connected the 1st transistor on the power lead in described many power leads;
Have the 3rd terminal, the 4th terminal and the 2nd control terminal, described the 3rd terminal is connected on described the 1st terminal, described the 4th terminal is connected on the data line in described many data lines, and described the 2nd control is connected the 2nd transistor on the sweep trace in the described multi-strip scanning line with terminal;
Have the 5th terminal and the 6th terminal, described the 5th terminal is connected the electrooptic cell on described the 1st terminal;
Have the 7th terminal and the 8th terminal, described the 7th terminal is connected the described the 1st and controls with the capacity cell on the terminal;
Control described the 1st terminal and 3rd transistor that be electrically connected of described the 1st control with terminal;
The control of Electric potentials line that is connected with described the 6th terminal of the other unit circuit of described a plurality of unit circuits with described the 6th terminal;
Described control of Electric potentials line is set at a plurality of current potentials or controls being electrically connected and control circuit that electricity disconnects of current potential of described control of Electric potentials line and regulation.
12. electro-optical device according to claim 11 is characterized in that:
The transistor that comprises in the described constituent parts circuit is described the 1st transistor, described the 2nd transistor and described the 3rd transistor.
13., it is characterized in that according to claim 11 or 12 described electro-optical devices:
Described control circuit is the 4th transistor with the 9th terminal and the 10th terminal;
Described the 9th terminal is connected with described the 6th terminal by described control of Electric potentials line, and described the 10th terminal is connected on the supply line of the current potential of supplying with described a plurality of current potentials or described regulation.
14., it is characterized in that according to any described electro-optical device in the claim 11～13:
Described electrooptic cell is the EL element that luminescent layer is made of organic material.
15., it is characterized in that according to any described electro-optical device in the claim 11～14:
A sweep trace in described multi-strip scanning line disposes homochromy electrooptic cell.
16. a method of driving electro-optical device, this electro-optical device comprise multi-strip scanning line, many data lines, a plurality of unit circuit and many power leads;
Described a plurality of unit circuit comprises respectively:
Corresponding the 1st electrode and the 2nd interelectrode potential difference (PD), the electrooptic cell of performance optical function;
Have the 1st terminal, the 2nd terminal and the 1st control and use terminal, described the 1st terminal is connected the 1st transistor on described the 1st electrode;
Being connected the described the 1st controls with the capacity cell on the terminal;
Have the 3rd terminal, the 4th terminal and the 2nd control terminal, described the 3rd terminal is connected on described the 1st terminal, described the 4th terminal is connected on the data line in described many data lines, and described the 2nd control is connected the 2nd transistor on the sweep trace in the described multi-strip scanning line with terminal;
It is characterized in that: comprising:
With the potential setting of described the 2nd electrode is to make described electrooptic cell not show the current potential of optical function, and use the terminal feeding sweep signal to described the 2nd control by a sweep trace in the described multi-strip scanning line, making described the 2nd transistor is conducting state, supply with the data-signal that as electric current provide by described the 2nd transistor to described the 1st transistor from a described data line, accumulating the 1st step in the described capacity cell with described data-signal corresponding charge amount;
Provide sweep signal to described the 2nd control with terminal by described sweep trace, making described the 2nd transistor is cut-off state, and is the potential setting of described the 2nd electrode the current potential that makes described electrooptic cell performance optical function, and correspondence is accumulated in the described quantity of electric charge electric current with voltage the described the 1st transistorized conducting state correspondent voltage level or levels of current that set in the described capacity cell offers described electrooptic cell by described the 1st electrode the 2nd step.
17. method of driving electro-optical device according to claim 16 is characterized in that:
Described a plurality of unit circuit also comprises described the 1st terminal of control and described the 1st the control electrical connection of terminal and the 3rd transistor that electricity disconnects respectively;
Carry out described the 1st step during at least a portion during in, be conducting state by making described the 3rd transistor, be electrically connected described the 1st terminal and terminal is used in described the 1st control;
Carry out described the 2nd step during at least a portion during in, be off-state by making described the 3rd transistor, electricity disconnects described the 1st terminal and described the 1st control terminal.
18., it is characterized in that according to claim 16 or 17 described method of driving electro-optical device:
Described electrooptic cell is an organic EL.
19. an electronic device is characterized in that:
Any described electronic circuit in the claim 1～8 has been installed.
20. an electronic device is characterized in that:
Any described electro-optical device in the claim 11～15 has been installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101007156A CN1497514A (en) | 2002-10-03 | 2003-10-08 | Electronic circuit and its drive method, electro-optic device and its drive metod, electronic instrument |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002291145 | 2002-10-03 | ||
| JP2003315583 | 2003-09-08 | ||
| CNA2003101007156A CN1497514A (en) | 2002-10-03 | 2003-10-08 | Electronic circuit and its drive method, electro-optic device and its drive metod, electronic instrument |
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| CN1497514A true CN1497514A (en) | 2004-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2003101007156A Pending CN1497514A (en) | 2002-10-03 | 2003-10-08 | Electronic circuit and its drive method, electro-optic device and its drive metod, electronic instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100428312C (en) * | 2004-06-02 | 2008-10-22 | 友达光电股份有限公司 | Electrolumi nescence display device and its driving method |
| CN100444242C (en) * | 2004-09-03 | 2008-12-17 | 周庆盈 | Light emitting device display circuit and drive method thereof |
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| CN105939151A (en) * | 2015-03-02 | 2016-09-14 | 英飞凌科技奥地利有限公司 | Electronic circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100428312C (en) * | 2004-06-02 | 2008-10-22 | 友达光电股份有限公司 | Electrolumi nescence display device and its driving method |
| CN100444242C (en) * | 2004-09-03 | 2008-12-17 | 周庆盈 | Light emitting device display circuit and drive method thereof |
| CN100444228C (en) * | 2004-10-28 | 2008-12-17 | 三星Sdi株式会社 | Scan driver, light emitting display using the same, and driving method thereof |
| US8674905B2 (en) | 2004-10-28 | 2014-03-18 | Samsung Display Co., Ltd. | Scan driver, light emitting display using the same, and driving method thereof |
| CN101458895B (en) * | 2007-12-13 | 2012-10-31 | 索尼株式会社 | Self-luminous display device and driving method of the same |
| CN105939151A (en) * | 2015-03-02 | 2016-09-14 | 英飞凌科技奥地利有限公司 | Electronic circuit |
| CN105939151B (en) * | 2015-03-02 | 2019-12-13 | 英飞凌科技奥地利有限公司 | Electronic circuit |
| CN106340266A (en) * | 2015-07-07 | 2017-01-18 | 新锐精密股份有限公司 | Light emitting diode display system and control method thereof |
| CN107767812A (en) * | 2016-08-17 | 2018-03-06 | 乐金显示有限公司 | Display device |
| CN107767812B (en) * | 2016-08-17 | 2020-08-18 | 乐金显示有限公司 | Display device |
| CN110956923A (en) * | 2019-12-24 | 2020-04-03 | 上海奕瑞光电子科技股份有限公司 | Low-temperature polycrystalline silicon flat panel detector pixel circuit and flat panel detection method |
| CN110956923B (en) * | 2019-12-24 | 2021-05-07 | 上海奕瑞光电子科技股份有限公司 | Low-temperature polycrystalline silicon flat panel detector pixel circuit and flat panel detection method |
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