CN100401349C - Light-emitting device and electronic apparatus - Google Patents

Light-emitting device and electronic apparatus Download PDF

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Publication number
CN100401349C
CN100401349C CNB2005100879486A CN200510087948A CN100401349C CN 100401349 C CN100401349 C CN 100401349C CN B2005100879486 A CNB2005100879486 A CN B2005100879486A CN 200510087948 A CN200510087948 A CN 200510087948A CN 100401349 C CN100401349 C CN 100401349C
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circuit
data line
electric current
light
forming region
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CN1728207A (en
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青木幸司
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Element capital commercial Co.
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Seiko Epson Corp
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Abstract

The invention provides a light emitting device. An X side protective circuit (11a) is provided with a diode (ESD1) which is arranged on the way of an data wire (26) and is electrically connected with logic power supply wires (16, 17), and a diode (ESD2) which is arranged on the way of an electric current supply line (25) and is electrically connected with logic power supply wires (16, 17). The diodes (ESD1, ESD2) send the static electricity produced by the electric current supply line and the data wire to the logic power wires, thereby reducing the static damage of a drive TFT (23) and a TFT (22) for switch in a unit circuit (20). The light emitting device can reduce the static damage of elements in the unit circuit on the condition of not reducing the image quality of an organic EL device.

Description

Light-emitting device and electronic equipment
Technical field
The present invention relates to light-emitting device and the technical field that possesses the electronic equipment of light-emitting device.Be particularly related to the holding circuit of light-emitting device.
Background technology
Light-emitting device by multi-strip scanning line, many data lines, with the light-emitting component of the corresponding setting in the point of crossing of this multi-strip scanning line and these many data lines, to the electric current supplying wire of light-emitting component supplying electric current, be arranged on the driving transistors that controls to the electric current of light-emitting component on the current path from the electric current supplying wire to the light-emitting component and constitute.One row or rectangular form a plurality of unit circuits that comprise light-emitting component and driving transistors at least, according to from the selection signal of sweep trace with from the data-signal of data line, light-emitting component is luminous respectively.
In this light-emitting device, to select signal to supply with the scan line drive circuit of sweep trace and data-signal be supplied with part or all of driving circuit of the data line drive circuit etc. of data line, do to be provided with in the substrate of light-emitting component as built-in circuit, perhaps as being attached on this substrate behind the outer attached IC circuit.As the main cause that makes scan line drive circuit and data line drive circuit worsen or destroy, can enumerate the destruction electrostatic breakdown that causes by the tension force that when making or carry light-emitting device, becomes the static discharge of problem especially.
Again, the driving circuit that exists at least one side of scan line drive circuit or data line drive circuit is built on the substrate, to constitute as outer attached IC circuit to the circuit of the driving power circuit of their supply powers and timing control circuit etc., connect scan line drive circuit or at least one side of data line drive circuit and the situation of outer attached IC circuit of substrate.In this case, exist in the manufacturing step that connects substrate and outer attached IC circuit static flows at least one side of the scan line drive circuit that forms or data line drive circuit on substrate circuit, destroy the worry of these circuit.Again, in this case, be arranged on the substrate, exist by in this splicing ear static inflow light-emitting device and worry connecting the scan line drive circuit of substrate or at least one side of data line drive circuit and the splicing ear of outer attached IC circuit.When in the wiring that this static is added in driving circuit is connected, driving circuit is worsened or destroy.
Therefore, deterioration or destruction for the driving circuit that prevents to be caused by this static are provided with holding circuit (for example, please refer to patent documentation 1 and 2) on the signal path relevant with the signal input and output of driving circuit.More particularly, holding circuit is set, as to for example from the input protection circuit of the input terminal of the various signals of the outside input clock signal of driving circuit, inversion clock signal, beginning pulse etc.Perhaps, holding circuit is set, as to the output scanning signal, finish the output protection circuit to the lead-out terminal of the various signals of driving circuit outside of pulse etc.
Again, also proposed,, prevented the technology (for example, please refer to patent documentation 3) that the element that caused by static destroys by making the static discharge of savings in the circuit part of quick condition effectively in the inside of insulated gate electrode transistor npn npn circuit arrangement.
Further, be not limited to the technology of foregoing, proposed the technology (for example, please refer to patent documentation 4～7) that the various display device of a lot of protections are not subjected to electrostatic influence.
As mentioned above, light-emitting device, for example, by multi-strip scanning line, many data lines, with the light-emitting component of corresponding setting of intersecting of this multi-strip scanning line and these many data lines, to the electric current supplying wire of light-emitting component supplying electric current, be arranged on the driving transistors that controls to the electric current of light-emitting component on the current path from the electric current supplying wire to the light-emitting component and constitute.Particularly, electric current supplying wire, thicker for to the light-emitting component supplying electric current than other wiring, connect current supply source and light-emitting component with low resistance.Particularly, when unit circuit is made of light-emitting component and driving transistors at least, row or rectangular when forming a plurality of unit circuit, in order to make this a plurality of unit circuit luminous equably, need make electric current supplying wire is low resistance.
But, be low resistance because make electric current supplying wire in this wise, so static arrives unit circuit by electric current supplying wire, exist because the worry that electrostatic breakdown makes unit circuit worsen or destroy.Particularly, have in unit circuit in the situation with the element of 2 conductive layers and the dielectric film between them, dielectric film generation insulation breakdown worsens unit circuit or destroys.As element, for example, be MOS field effect transistor and capacity cell with 2 conductive layers and the dielectric film between them.
Again, proposed by making electric current flow to data line, predetermined potential has been written to the grid of driving transistors, made the unit circuit that flows through light-emitting component with the corresponding electric current of this voltage from electric current supplying wire.This mode is called current programmed mode.At this moment, have driving transistors streaming current through unit circuit predetermined potential is written to driving transistors grid mode and predetermined potential is written to the mode of the grid of driving transistors through the mirror transistor streaming current that driving transistors is formed mirror-like.In this current programmed mode, making electric current supplying wire is low resistance, and in order correctly to write predetermined potential, equally also needing to make data line is low resistance.In this case, exist static arrives unit circuit through data line worry.
Particularly, existence constitutes as outer attached IC circuit to the current supply circuit and the data line drive circuit of electric current supplying wire supplying electric current, connect the light-emitting component of substrate and the situation of outer attached IC circuit, but exist static arrives unit circuit from the splicing ear of the light-emitting component that connects substrate and outer attached IC circuit worry in this case.
Exist the unexpected voltage that is caused by the static that takes place in electric current supplying wire and data line, make the various transistors that are included in the unit circuit be subjected to the situation of electrostatic breakdown, this becomes and causes the low reason of yield rate in the manufacture process of light-emitting device.Particularly, because organic EL is the light-emitting component of current drive-type, so one side guarantees that it is important that one side suppresses to be added on the unit circuit by the unexpected voltage that the static that takes place causes with the path of drive current and data-signal supply unit circuit in electric current supplying wire and data line.
Like this, light-emitting device will make the electrostatic breakdown to the element that comprises in the unit circuit that is caused by static by reducing, improve the yield rate of the light-emitting device in the manufacture process and by guaranteeing to be used for drive current and data-signal are supplied with the current path of unit circuit, carry out high quality images and show that it is difficult setting up simultaneously at these 2, but in above-mentioned patent documentation 1～7, do not see about the light-emitting device of current drive-type and recognize above-mentioned this record of 2.
Patent documentation 1: Japanese kokai publication hei 10-294383 communique;
Patent documentation 2: TOHKEMY 2003-308050 communique;
Patent documentation 3: TOHKEMY 2000-98338 communique;
Patent documentation 4: Japanese kokai publication hei 9-80469 communique;
Patent documentation 5: Japanese kokai publication hei 10-39325 communique;
Patent documentation 6: Japanese kokai publication hei 11-72806 communique;
Patent documentation 7: TOHKEMY 2000-89685 communique.
Summary of the invention
The present invention proposes in view of the above problems, and its purpose is to provide to be provided with protects the not light-emitting device of the holding circuit of destruction by electrostatic field.
In order to solve above-mentioned problem, relevant light-emitting device of the present invention, the transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of on-chip element-forming region in alignment arrangements with first electrode and second electrode, and described light-emitting device has: many power leads, it is configured in the neighboring area of the periphery that is arranged in described element-forming region, supplies with the power supply of different potentials; And electric current supplying wire; it connects up to described element-forming region from described neighboring area; in described unit circuit, be electrically connected through described first electrode of described transistor AND gate; it is characterized in that; in described neighboring area, also has the holding circuit that is used for electric current supplying wire; it is made of the diode that is connected between described electric current supplying wire and described many power leads, and described diode is connected according to the mode of the regular event that does not hinder described electric current supplying wire.
According to relevant light-emitting device of the present invention; the holding circuit that is used for electric current supplying wire of the static that for example then is provided for emitting in electric current supplying wire when making and takes place in electric current supplying wire and splicing ear thereof during carrying etc. or during work, the holding circuit by being used for electric current supplying wire can be released to the static that takes place at electric current supplying wire and splicing ear thereof in many power leads.So, can suppress and will be added on the unit circuit by the unexpected voltage that the static that takes place in electric current supplying wire and splicing ear thereof causes.Further, the light-emitting zone of the light-emitting component in the electric current supplying wire Units of Limitation circuit in the element-forming region, i.e. aperture rate, the resistance ratio electric current supplying wire of many power leads that form in the neighboring area is low.So, the static that takes place in electric current supplying wire and splicing ear thereof can be released in many power leads.
Have again, in order to solve above-mentioned problem, relevant light-emitting device of the present invention, the transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of on-chip element-forming region in alignment arrangements with first electrode and second electrode, and described light-emitting device has: many power leads, it is configured in the neighboring area of the periphery that is arranged in described element-forming region, supplies with the power supply of different potentials; Electric current supplying wire, it connects up to described element-forming region from described neighboring area, is electrically connected through described first electrode of described transistor AND gate in described unit circuit; And data line; connect up to described element-forming region from described neighboring area; supply with data-signal to described unit circuit; it is characterized in that; in described neighboring area, also has the holding circuit that is used for data line; it is made of the diode that is connected between described data line and described many power leads, and described diode is connected according to the mode of the regular event that does not hinder described data line.
According to relevant light-emitting device of the present invention; the holding circuit that is used for data line of the static that for example then is provided for emitting in data line when making and takes place in data line and splicing ear thereof during carrying etc. or during work, the holding circuit by being used for data line can be released to the static that takes place at data line and splicing ear thereof in many power leads.So, can suppress and will be added on the unit circuit by the unexpected voltage that the static that takes place in data line and splicing ear thereof causes.Further, the light-emitting zone of the light-emitting component in the data line Units of Limitation circuit in the element-forming region, i.e. aperture rate, the resistance ratio data line of many power leads that form in the neighboring area is low.So, the static that takes place in data line and splicing ear thereof can be released in many power leads.
Especially preferably be applicable to by from the electric current supplying wire to the data line, flowing through electric current, predetermined potential is written to the grid of driving transistors, make the light-emitting device that flows through the current programmed mode of light-emitting component with the corresponding electric current of this voltage.In the light-emitting device of current programmed mode; with low resistance unit circuit and data line are coupled together; exist the worry that the static that takes place in the coupling part of the data line drive circuit of supplying with data-signal and data line arrives unit circuit; but can prevent that by the holding circuit that is provided for data line this static from arriving unit circuit, and take precautions against in possible trouble.
Again; light-emitting device of the present invention is the light-emitting device of previous record; it is characterized in that further having and connect up to described element-forming region from described neighboring area; sweep signal is supplied with the sweep trace of described unit circuit; in described neighboring area, has the holding circuit that is used for sweep trace that constitutes by the protecting component that is connected between described sweep trace and described many power leads.
If according to this mode, then, the static that takes place in sweep trace and splicing ear thereof can be released in many power leads by being used for the holding circuit of sweep trace.Further, the holding circuit that will be used for sweep trace is arranged on the neighboring area of element-forming region, can suppress superfluous electric current and flow into element-forming region.So; also can suppress not only to pass through electric current supplying wire and data line; and through sweep trace; superfluous electric current flow into element-forming region; the situation that is arranged on electric current supplying wire and data line with holding circuit that will be used for electric current supplying wire and the holding circuit that is used for data line compares, and can more positively protect unit circuit.
About the holding circuit that is used for electric current supplying wire of light-emitting device of the present invention, the holding circuit that is used for the holding circuit of data line and is used for the holding circuit etc. of sweep trace preferably are made of the protecting component that is arranged between many power leads and electric current supplying wire or the data line.This protecting component is made of diode; the power lead that uses when making light-emitting device luminous by using; and; the current potential of added power lead and the current potential of electric current supplying wire or data line made power lead that adds electronegative potential and the power lead that adds noble potential be connected with 2 terminals of diode respectively when reference was luminous.When such connection diode, with the situation that protective resistance is set in electric current supplying wire and data line relatively, do not increase the resistance of electric current supplying wire and data line.Therefore, can not hinder to unit circuit supply drive current, so when light-emitting device is worked, can supply with desired drive current with the holding circuit that is used for data line because be used for the holding circuit of electric current supplying wire to the constituent parts circuit of light-emitting device.Like this; even if the holding circuit that is arranged on the situation on electric current supplying wire way and will be used for data line in the holding circuit that will be used for electric current supplying wire is arranged in the situation on data line way; do not play resistive element with the holding circuit that is used for data line for drive current because be used for the holding circuit of electric current supplying wire; so can not reduce the luminous of light-emitting device from the luminous required drive current of electric current supplying wire or data line supply light-emitting component yet.
Above result, according to relevant light-emitting device of the present invention, then can not reduce the picture quality of the light-emitting component of current drive-type, can suppress and to be added on the element-forming region by the unexpected voltage that the static that takes place in electric current supplying wire or data line and splicing ear thereof causes.Therefore, can solve the yield rate light-emitting device requirement, that suppress in the manufacture process simultaneously reduces and high-quality luminous such 2 problems.
Here, relevant " many power leads " of the present invention is in order power supply to be supplied with the wiring of the various elements that are used for driven light-emitting element, to be arranged in the light-emitting device usually.The various elements that are used for driven light-emitting element refer to each element that is included in scan line drive circuit, data line drive circuit, unit circuit etc.So the wiring method of light-emitting device does not have big change, can guarantee to be used to emit the current path of static.Further, for example, be provided with in the situation of many power leads, can emit static from electric current supplying wire and data line that extension is arranged on the constituent parts circuit in the mode that forms the zone with embracing element.So, can suppress unexpected voltage is added on the constituent parts circuit, can protect not destruction by electrostatic field of whole element-forming region.Again; hope is provided with many power leads in the mode that embracing element forms the zone; but in can being configured in electric current supplying wire from the neighboring area to the element-forming region; power supply is connected with electric current supplying wire, in the neighboring area of element-forming region, between electric current supplying wire and power supply, is provided for the holding circuit of electric current supplying wire at least.Here, the zone of removing element-forming region refers to the neighboring area or the outer attached IC of element-forming region.Equally also the holding circuit that is used for the holding circuit of data line or is used for sweep trace can be arranged at least between the data line and data line drive circuit that element-forming region forms; perhaps, between the sweep trace and scan line drive circuit that in element-forming region, forms.
Again, light-emitting device of the present invention is the light-emitting device of previous record, in described neighboring area, has the scan line drive circuit of sweep signal being supplied with described unit circuit through sweep trace, perhaps, through data line data-signal is supplied with the data line drive circuit of described unit circuit, described scan line drive circuit or data line drive circuit are made of complementary transistor, and described many power leads are many power leads power supply being supplied with described scan line drive circuit or data line drive circuit.
According to relevant light-emitting device of the present invention, then because in described neighboring area, scan line drive circuit or data line drive circuit are set, use many power leads power supply being supplied with scan line drive circuit or data line drive circuit, so do not need to dispose in addition many power leads.Particularly, scan line drive circuit or data line drive circuit are connected with sweep trace that forms in element-forming region or data line respectively, are provided with near element-forming region ground.So, many power leads that power supply is supplied with scan line drive circuit or data line drive circuit are connected with holding circuit.Further wish holding circuit is arranged between scan line drive circuit or data line drive circuit and many power leads again.
Again, light-emitting device of the present invention is the light-emitting device of previous record, it is characterized in that in described neighboring area, between described data line and described data line drive circuit, perhaps, between described sweep trace and the described scan line drive circuit, resistive element is set.
According to this mode, then resistive element can suppress superfluous electric current and flow into unit circuit through data line and sweep trace, can protect not destruction by electrostatic field of unit circuit.
In the alternate manner of relevant light-emitting device of the present invention; it is characterized in that; the described holding circuit that is used for data line is a plurality of diodes that are connected in series mutually, and described a plurality of diodes are configured in the both sides in the zone of described electric current supplying wire and described data line intersection.
According to this mode; then in the zone of electric current supplying wire and data line intersection, accumulate static easily; a plurality of diodes of the holding circuit that is configured for data line of the both sides by being configured in the zone that electric current supplying wire and data line intersect can will be released in the power lead with accumulating in static emphasis in this zone.So, can suppress to flow into unit circuit in the zone of electric current supplying wire and data line intersection by the excess current that the static that accumulates causes.
In the alternate manner of relevant light-emitting device of the present invention; it is characterized in that; the described holding circuit that is used for sweep trace is a plurality of diodes that are connected in series mutually, and described a plurality of diodes are configured in the both sides in the zone that in described many power leads and described sweep trace intersect.
According to this mode; accumulate static easily in the zone that in many power leads and described sweep trace intersect; the conduct of the both sides by being configured in the zone that in many power leads and described sweep trace intersect is used for a plurality of diodes of the holding circuit of sweep trace, can will be released in the power lead with accumulating in static emphasis in this zone.So for example, the excess current that the static that accumulates in the zone that can suppress to be intersected by in many power leads and described sweep trace causes flow into pseudo-unit circuit or unit circuit.
In the alternate manner of relevant light-emitting device of the present invention, further have second electrode usefulness wiring that is electrically connected with the second electrode side of described light-emitting component, and further have the current path that the static that is used for taking place at least one side of described electric current supplying wire and described data line is released to the wiring of described second electrode usefulness.
According to this mode, then second electrode wiring through being electrically connected with the second electrode side of light-emitting component can be released to the static that takes place second electrode with in the wiring at least one side of electric current supplying wire and data line.Second electrode is to be used for driven light-emitting element and the wiring that is provided with wiring, and the wiring that static is emitted in new being used to needn't be set in addition, just can emit static.
In the alternate manner of relevant light-emitting device of the present invention, it is characterized in that, in described neighboring area, described electric current supplying wire comprises in the mode of surrounding described element-forming region and extends the main line of setting and extend many branch lines that are arranged in the described element-forming region from described main line, and described many branch lines are electrically connected in described element-forming region mutually.
In this mode, for example, comprise the mode that drives by the light-emitting component that comprises in the activity control constituent parts circuit with a plurality of unit circuits one row or rectangular being configured in the element-forming region.According to this mode, then extend the main line that electric current supplying wire is set in the mode of in the neighboring area of element-forming region, surrounding described element-forming region, many branch lines of mutual electrical connection further are set in element-forming region.So, can will be released to the outside of element-forming region through these branch lines and main line through the static that takes place on many branch lines certain the bar branch line in element-forming region that in element-forming region, is electrically connected mutually.Therefore, can protect not destruction by electrostatic field of whole element-forming region.
In order to solve above-mentioned problem, relevant light-emitting device of the present invention, on-chip element-forming region constitutes by light-emitting zone with at the peripheral non-luminous region that forms of this light-emitting zone, the first transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of described light-emitting zone in alignment arrangements with first electrode and second electrode, comprise transistor seconds at a plurality of pseudo-unit circuit that is configured in described non-luminous region in each, and described light-emitting device also has electric current supplying wire, it connects up to described element-forming region from described neighboring area, in described unit circuit, be electrically connected with described first electrode through described the first transistor, it is characterized in that, described power supply supply line and described pseudo-unit circuit are coupled together.
According to relevant light-emitting device of the present invention, can prevent that then static from arriving unit circuit, and then prevent to destroy unit circuit, and can prevent when making light-emitting device luminous, luminous or flow through leakage current in pseudo-unit circuit.
Again, in order to solve above-mentioned problem, relevant light-emitting device of the present invention, on-chip element-forming region constitutes by light-emitting zone with at the peripheral non-luminous region that forms of this light-emitting zone, the first transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of described light-emitting zone in alignment arrangements with first electrode and second electrode, comprise transistor seconds at a plurality of pseudo-unit circuit that is configured in described non-luminous region in each, and described light-emitting device also has: many power leads, connect up in its neighboring area at the periphery that is arranged in described element-forming region, supply with the power supply of different potentials to described unit circuit; And electric current supplying wire, it connects up to described element-forming region from described neighboring area, in described unit circuit, be electrically connected with described first electrode through described the first transistor, it is characterized in that, make in the described many electric current lines arbitrary power lead and be connected at described pseudo-unit circuit.
According to relevant light-emitting device of the present invention, can prevent that then static from arriving unit circuit, and then prevent to destroy unit circuit, and can prevent when making light-emitting device luminous, luminous or flow through leakage current in pseudo-unit circuit.
In the alternate manner of relevant light-emitting device of the present invention, it is characterized in that, further have the holding circuit that is used for pseudo-unit circuit that constitutes by the protecting component that is arranged in described pseudo-unit circuit and described many power leads between a certain the power lead.
According to this mode, the static that takes place can be released to a certain power lead in many power leads in pseudo-unit circuit.Because will be released in the power lead at the static that unit circuit takes place, so can suppress electrostatic breakdown to unit circuit through the holding circuit that is used for pseudo-unit circuit.Again, because do not drive pseudo-unit circuit, so when light-emitting device is worked,, can not drive yet and produce any obstacle to unit circuit even if static is released to the power lead of supplying with the power supply of electronegative potential in many power leads.
Again, in order to solve above-mentioned problem, relevant light-emitting device of the present invention, the transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of on-chip element-forming region in alignment arrangements with first electrode and second electrode, and described light-emitting device has: first electric current supplying wire, connecting up to described element-forming region in its neighboring area from described element-forming region, is electrically connected through described first electrode of described transistor AND gate; Second electric current supplying wire, it connects up to described element-forming region from described neighboring area, is electrically connected with described second electrode; And data line; it connects up to described element-forming region from described neighboring area; data-signal is supplied with described unit circuit; the described a plurality of unit circuits of described second electrode pair are provided with jointly; it is characterized in that; in described neighboring area; has the holding circuit that is used for data line; by first diode that is connected between described data line and described first electric current supplying wire; and second diode that is connected between described data line and described second electric current supplying wire constitutes, and described first and second diode is connected according to the mode of the regular event that does not hinder described data line respectively.
According to relevant light-emitting device of the present invention, then can be by being arranged on the holding circuit that is used for data line in the data line way, the static that will take place in data line and splicing ear thereof is released to first electric current supplying wire or second electric current supplying wire.So, can more positively emit static, can more effectively suppress the electrostatic breakdown of unit circuit.
Relevant electronic equipment of the present invention in order to solve above-mentioned problem, possesses described light-emitting device.
According to relevant electronic equipment of the present invention, then because possess above-mentioned light-emitting device of the present invention, thus can improve patience to static, thus the yield rate in the electronic equipment manufacturing, the plant failure after preventing to dispatch from the factory can be improved.Further, desired drive current can be supplied with light-emitting component, fully luminous by guaranteeing light-emitting component, can not reduce picture quality yet.Can realize that further yield rate is high and be difficult to break down, can carry out the various electronic equipments such as video tape recorder, workstation, visual telephone, POS terminal, touch-screen of portable phone, electronic memo, word processor, view finding type or monitor direct viewing type that high-grade shows.
Can make the such effect of the present invention and other benefit become clearer from the embodiment that the following describes.
Description of drawings
Fig. 1 is the figure of the formation of the pattern ground expression organic El device relevant with first embodiment of the present invention.
Fig. 2 is the figure that is used to illustrate the formation of the holding circuit of the organic El device relevant with first embodiment of the present invention and unit circuit.
Fig. 3 is the figure of the formation of the unit circuit that has of the expression organic El device relevant with the 3rd embodiment of the present invention.
Fig. 4 is the figure that is used to illustrate the holding circuit of the organic El device relevant with the 3rd embodiment of the present invention.
Fig. 5 is the figure that is used to illustrate an example of the light-emitting device relevant with the present invention.
Fig. 6 is the figure that is used to illustrate an example of the data line that is connected the 3rd embodiment of the present invention and the protection diode between the electric current supplying wire.
Fig. 7 is the figure of the formation of the unit circuit that has of the expression organic El device relevant with the 4th embodiment of the present invention.
Fig. 8 is the figure that is used to illustrate the holding circuit of the organic El device relevant with the 4th embodiment of the present invention.
Fig. 9 is the oblique view of an example of the expression electronic equipment relevant with the present invention.
Figure 10 is the oblique view of other example of the expression electronic equipment relevant with the present invention.
Figure 11 is the figure of formation that is used to illustrate holding circuit, driving circuit and the unit circuit of the organic El device relevant with first embodiment of the present invention.
Figure 12 is the figure of the formation of the pattern ground expression organic El device relevant with second embodiment.
The figure of the formation of Figure 13 organic El device 1 that to be pattern ground expression relevant with the variation of second embodiment 1.
The figure of the formation of Figure 14 organic El device 1 that to be pattern ground expression relevant with the variation of second embodiment 2.
The figure of the formation of Figure 15 organic El device 1 that to be pattern ground expression relevant with the variation of second embodiment 3.
Figure 16 is the figure of the formation of the pattern ground expression organic El device 100 relevant with the variation that makes the 3rd embodiment.
Figure 17 is the figure of the formation of the pattern ground expression organic El device 100 relevant with the variation that makes the 3rd embodiment.
Figure 18 is the figure of the formation of the pattern ground expression organic El device 200 relevant with the variation that makes the 4th embodiment.
Among the figure: 10,110, the 210-organic EL panel, 11,111, the 211-holding circuit, 14,114, the 214-element-forming region, single 20,120,220-position circuit.
Embodiment
Below, one side simultaneously describes embodiments of the present invention in detail with reference to accompanying drawing.In the embodiment below,, the light-emitting device that adopts the driven with active matrix organic El device is described as an example of the light-emitting device relevant with the present invention again.
(first embodiment)
(formation of organic El device)
Fig. 1 is the pie graph of the pattern ground expression organic El device 1 relevant with present embodiment.
In Fig. 1, organic El device 1 has the holding circuit 11 as the organic EL panel 10 of an example of " electro-optical panel " relevant with the present invention and protection organic EL panel 10.Again; in the present embodiment, particularly, organic EL panel 10 is driving circuit internally-arranged types; data line drive circuit 12a (being also referred to as the X driver) and scan line drive circuit 12b (being also referred to as the Y driver) are being set on its element substrate SUB, and holding circuit 11 is being set in the lump.Preferably with data line drive circuit 12a, scan line drive circuit 12b and holding circuit 11; with the semiconductor element as the transistor (hereinafter referred to as TFT) that comprises in the constituent parts circuit in being presented to element-forming region 14, be presented to the neighboring area of element substrate.Perhaps, will construct as outer attached IC as part or all of the driving circuit data line drive circuit 12a and the scan line drive circuit 12b, outer attached or after be attached on the element substrate.In this case, the driving circuit that connects outer attached IC and organic EL panel is set with splicing ear (not drawing among the figure).
Organic EL panel 10 has scan line drive circuit 12b, data line drive circuit 12a, pre-charge circuit 15, extend 2 logic powers wirings 16 and 17 being arranged on element-forming region 14 peripheries, by having first power-supply wiring 18 and the second source wiring 19 that the first power- supply wiring 18R, 18G and 18B constitute.Further, organic EL panel 10 has as shown in Figure 2 unit circuit 20, electric current supplying wire L2 and as the data line L1 of the example of " data line " of the present invention.
First power-supply wiring 18 constitutes by having the first power-supply wiring 18R, the 18G and the 18B that are electrically connected with first electrode (anode) of the organic EL that sends each coloured light respectively.1 first electrode power-line among the first power- supply wiring 18R, 18G and the 18B is suitable with electric current supplying wire L2 as shown in Figure 2, and drive current is supplied with organic EL 29.The constituent parts circuit 20 that organic EL panel 10 has has the organic EL of an example as the light-emitting component of the light of the wavelength of all kinds that sends R (redness), G (green), B (blueness), organic El device 1 be can colorful light-emitting light-emitting device.Again, in Fig. 2, simplify in order to make explanation, 1 electric current supplying wire L2 corresponding with these organic ELs of all kinds has only drawn.
An example of second source wiring 19 relevant with the present invention " second electrode with wiring ", the second electrode side of the organic EL 29 that has with constituent parts circuit 20 is electrically connected.
Holding circuit 11; the mode that forms zone 14 with embracing element is arranged in the organic EL panel 10; in the neighboring area that is arranged in rectangular-shaped element-forming region 14 peripheries, comprise in the mode that clips element-forming region 14 and respectively establish a pair of X side holding circuit 11a and Y side holding circuit 11b respectively.One side's X side holding circuit 11a is between data line drive circuit 12a and the element-forming region 14, and the opposing party's Y side holding circuit 11b extension is arranged between scan line drive circuit 12b and the element-forming region 14.X side holding circuit 11a and Y side holding circuit 11b with in the neighboring area of element-forming region 14, form zone 14 mode and extend the logic power wiring 16 and 17 of setting and be electrically connected with embracing element.X side holding circuit 11a and Y side holding circuit 11b suppress by the electrostatic breakdown of the static that takes place among the electric current supplying wire L2 to the various elements that comprise in the unit circuit 20.
In Fig. 1 and Fig. 2, scan line drive circuit 12b selects the circuit that write selection signal S1 of signal wire L6 supply as an example of sweep signal to writing.Write and select signal S1 to be used for switch supplying with the grid of switch described later with TFT22 with the signal that TFT22 switches to activated state or inactive state.
Data line drive circuit 12a has the circuit that the sample circuit of the picture signal of sending from image signal generating circuit 71 being taken a sample in predetermined timing and data-signal I1 that will be corresponding with picture signal supply with data line L1, according to the conducting state of switch, data-signal 11 is supplied with data line L1 with TFT22.
The work of the work of scan line drive circuit 12b and data line drive circuit 12a realizes the phase mutually synchronization according to the synchronizing signal as the clock signal of supplying with respectively from control circuit 72, carries out luminous in the mode of active matrix.
Below, we simultaneously describe unit circuit 20 in detail with reference to chart at one side.Fig. 2 is the planimetric map that amplifies a part of four jiaos of expression organic EL panel 10 shown in Figure 1, is the planimetric map of the formation of holding circuit 11, unit circuit 20 and pseudo-unit circuit 28 in the expression organic EL panel 10.
In Fig. 2, in element-forming region 14, setting unit circuit 20 and a plurality of pseudo-unit circuit 28.The a plurality of unit circuits 20 of rectangular ground alignment arrangements in element-forming region 14 are arranged on pseudo-unit circuit 28 on the periphery of element-forming region 14.Here, the zone that forms unit circuit 20 is called light-emitting zone, the zone that forms pseudo-unit circuit is called non-luminous region.In Fig. 2, only express the regional A that comprises a unit circuit 20 in four jiaos the part that is arranged on organic EL panel 10 again.
The formation of the unit circuit 20 in the present embodiment comprises that switch is with TFT22, drive TFT 23, memory capacitance 24 and organic EL 29 as the example of " light-emitting component " relevant with the present invention.
The grid of drive TFT 23 is electrically connected with an end of memory capacitance 24, and is electrically connected with the drain electrode of switch with TFT22.The source electrode of drive TFT 23 is connected with electric current supplying wire L2, and drain electrode is connected with first electrode (anode) of organic EL 29.Switch is electrically connected with writing selection signal wire L6 with the grid of TFT22, and source electrode is connected with data line L1.
Writing of an example as " sweep trace " relevant with the present invention selected signal wire L6, to supply with the grid of switch from the selection signal S1 that writes that scan line drive circuit 12b supplies with, and make switch switch to activated state from inactive state with TFT22 with TFT22.Here, activated state means that switch is with state that can conducting between the grid of TFT22 and drain electrode.Switch to the switch TFT22 of activated state, make the data-signal I1 that supplies with from data line L1 through between the source electrode and drain electrode of switch with TFT, with charge storage in memory capacitance 24.According to the electric charge that is stored in the memory capacitance 24, data voltage is added on the grid of drive TFT 23, drive TFT 23 becomes and the data voltage corresponding work state that is added on the grid.Drive TFT 23 from electric current supplying wire L2 will with data voltage corresponding driving current supply organic EL 29, make organic EL 29 luminous with predetermined luminance.By making data line drive circuit 12a and scan line drive circuit 12b synchronous, make the organic EL 29 that comprises in the constituent parts circuit 20 luminous, organic El device 1 can display image.
Organic El device of the present invention also can have pre-charge circuit 15.Pre-charge circuit 15 carries out charge or discharge in order to prevent that writing of data-signal is not enough to data line, and the current potential that makes data line L1 in advance is near the data-signal current potential.So, almost or in the practice can not become problem fully to the write capability deficiency of the data-signal of data line L1.And, according to the data-signal that writes with sufficient relatively write capability, can realize that high-grade image shows.
Organic EL panel 10 also can have X side check circuit 5a and Y side check circuit 5b.X side check circuit 5a and Y side check circuit 5b are used for whether having put aside static manufacture process inspection in organic EL panel.
(formation of holding circuit)
Below, we are simultaneously with reference to Fig. 2, and one side describes holding circuit 11 in detail.
Logic power is with an example of wiring 16 relevant with the present invention with 17 " many power leads ", in the neighboring area that is arranged in element-forming region 14 peripheries, forms zone 14 mode with embracing element and extends respectively and be arranged on directions X and Y direction.Logic power forms in the mode that embracing element forms zone 14 with wiring 16 and 17, but also can form on one side at least of element-forming region 14.Again, form if form zone 14 mode with embracing element, then prevent easily static to the influence of unit circuit in possible trouble.
As shown in figure 11, logic power is supplied with the element be used for driving the organic EL that constituent parts circuit 20 comprises with wiring 16 and 17 with power supply, more particularly is included in the element of among data line drive circuit 12a and the scan line drive circuit 12b various signals being supplied with unit circuits 20.Here, logic power is supplied with organic EL panel 10 with the 16 power supply V2 with hot side that connect up, the logic power power supply V3s supply organic EL panels 10 of wiring 17 with low potential side, logic power wiring 16a will hang down the power supply V4 supply organic EL panel 10 of the intermediate potential higher than power supply V3 than power supply V2.Figure 11 is the figure of expression scan line drive circuit 12b, Y side holding circuit 11b and element-forming region 14.Scan line drive circuit 12b, for example, by the displacement transfer circuit 121b that transmits shift pulse according to logical signal, will constitute from the output of displacement transfer circuit level shift circuit 122b and buffering circuit 123b as predetermined voltage.The element that is used for them as phase inverter, clock control phase inverter etc., is made of with the on-off element between the wiring 17 logic power of the logic power that is arranged on the power supply V2 that supplies with hot side with the power supply V3 of wiring 16 and supply low potential side.This on-off element generally is made of the complementary type on-off element.As shown in Figure 11, logic power wiring 16,16a, 17 in scan line drive circuit 12b, connect up along element-forming region 14, each power supply are supplied with each unit circuit of the scan line drive circuit 12b that every sweep trace L6 is formed.By logic power wiring 16a and 17, the power supply V4 of intermediate potential and the power supply V3 of low potential side are supplied with displacement transfer circuit 121b, by logic power wiring 17 and 16, the power supply V3 of low potential side and the power supply V2 of hot side are supplied with level shift circuit 122b and buffering circuit 123b.Again, same, in Y side holding circuit 11b,, supply with the power supply V2 of hot side and the power supply V3 of low potential side by logic power wiring 16 and 17.The power supply that is connected with Y side holding circuit 11b selectively connects the power supply V2 of hot side and the power supply V3 of low potential side, but from power supply V2, V3, V4, selectively connects the power supply of maximum potential and the power supply of potential minimum.Again, in scan line drive circuit 12b and Y side holding circuit 11b, configuration logic power-supply wiring 16 and 17 still preferably makes commonization of wiring from the viewpoint that designs respectively.Further, having done record about scan line drive circuit 12b and Y side holding circuit 11b in Figure 11, also is same for data line drive circuit 12a and X side holding circuit 11a still.Data line drive circuit 12a for example, having displacement and passing on circuit, level shift circuit, buffer circuit and sample circuit, similarly is connected logic power wiring 16 and 17 in data line drive circuit 12a and X side holding circuit 11a.
X side holding circuit 11a have with the way that is arranged on electric current supplying wire L2 in logic power wiring 16 and 17 electrostatic discharge protective circuit ESD2 that are electrically connected and the way that is arranged on data line L1 in the logic power 16 and 17 electrostatic discharge protective circuit ESD1 that are electrically connected that connect up.Electric current supplying wire L2 is the wiring that the organic EL that comprises in unit circuit 20 29 is supplied with drive currents, is connected with the source electrode of the drive TFT 23 that comprises in the unit circuit 20.Data line L1 is a data line from data-signal to unit circuit 20 that supply with, is connected with the source electrode of the switch that comprises in the unit circuit 20 with TFT22.
Be arranged on the example of the electrostatic discharge protective circuit ESD2 relevant with the present invention " holding circuit that is used for electric current supplying wire " in the way of electric current supplying wire L2, be electrically connected with the logic power wiring 17 of the power supply V3 that supplies with electronegative potential and the logic power wiring 16 of supplying with the power supply V2 of noble potential.Electrostatic discharge protective circuit ESD2 for example, has 2 the diode Da and the Db that are connected in series.The anode of diode Da is connected with the logic power wiring 17 of the power supply V3 that supplies with electronegative potential, and the negative electrode of diode Db is connected with the logic power wiring 16 of the power supply V2 that supplies with noble potential.The anode of the negative electrode of diode Da and diode Db is connected with electric current supplying wire L2 in extending the neighboring area be arranged on element-forming region 14.
In when, logic power than noble potential taking place in electric current supplying wire L2 connecting up the static of 16 high current potentials when, static is released to the logic power wiring 16 of noble potential through diode Db, when logic power than electronegative potential taking place connect up the static of 17 low current potentials, static is released to the logic power wiring 17 of electronegative potential through diode Da in electric current supplying wire L2.So electrostatic discharge protective circuit ESD2 can suppress and will be added on the drive TFT 23 by the unexpected voltage that the static that takes place among the electric current supplying wire L2 causes, can reduce the electrostatic breakdown to drive TFT 23.
Electrostatic discharge protective circuit ESD2 is arranged on the way in the path of 29 supply drive currents from electric current supplying wire L2 to organic EL; but because drive current is not played resistance; so do not hinder the luminous of organic EL 29, can not reduce the picture quality of organic El device 1.
Be arranged on the example of the electrostatic discharge protective circuit ESD1 relevant with the present invention " holding circuit that is used for data line " in the way of data line L1.The same wiring with 2 logic powers of electrostatic discharge protective circuit ESD1 and electrostatic discharge protective circuit ESD2 16 is connected with 17.Electrostatic discharge protective circuit ESD1 and the electrostatic discharge protective circuit ESD2 that is arranged among the electric current supplying wire L2 have 2 diodes that are connected in series equally, correspondingly this static are released to a side of logic power wiring 16 or 17 with the electrostatic potential that takes place in data line L1.That is, electrostatic discharge protective circuit ESD1 can emit the static that is difficult to emit by the electrostatic discharge protective circuit ESD2 that is arranged among the electric current supplying wire L2.So electrostatic discharge protective circuit ESD1 can suppress to be added in by the unexpected voltage that static causes with data line L1 and is connected switch with on the TFT22, can reduce the electrostatic breakdown to switch TFT22.
Again, in the present embodiment, resistive element R11 is arranged in the way of data line L1, can more positively protects unit circuit 20 not to be subjected to electrostatic influence.
Like this; if according to electrostatic discharge protective circuit ESD1 and ESD2; then can not hinder flowing of the various electric currents that when making organic EL 29 luminous, need; can protect unit circuit 20 not to be subjected to the electrostatic influence that in electric current supplying wire L2 and data line L1, takes place, and can not reduce the picture quality of organic EL panel 10.So,, then can make and reduce the picture quality that unit circuit 20 is subjected to electrostatic breakdown and do not reduce organic El device 1 and set up simultaneously if according to electrostatic discharge protective circuit ESD1 and ESD2.
Y side holding circuit 11b has and is arranged on writing logic power the wiring 16 or 17 electrostatic discharge protective circuit ESD6 that are electrically connected that select in the signal wire L6 way and being arranged on the electrostatic discharge protective circuit ESD5 of wiring L5 on the way as an example of " sweep trace " relevant with the present invention.
The example of electrostatic discharge protective circuit ESD6 relevant with the present invention " holding circuit that is used for sweep trace " has 2 diodes that are connected in series equally with above-mentioned electrostatic discharge protective circuit ESD1 and ESD2.Electrostatic discharge protective circuit ESD6 and the electrostatic potential that takes place in writing selection signal wire L6 correspondingly are released to this static one side of logic power wiring 16 or 17.So electrostatic discharge protective circuit ESD6 can reduce the static that takes place is used TFT22 to switch electrostatic breakdown in writing selection signal wire L6.Again, in the present embodiment, in writing the way of selecting signal wire L6, resistance R 61 and R62 are set, can more positively protect unit circuit 20 not to be subjected to electrostatic influence.
Like this; if according to the holding circuit relevant 11 with present embodiment; then can protect unit circuit 20 not to be subjected to and write and select the electrostatic influence that takes place among the signal wire L6 at electric current supplying wire L2, data line L1, can suppress to as the electrostatic breakdown of the element of the switch usefulness transistor 22 that comprises in the unit circuit and driving transistors 23.Further, be released in order and to write the static of selecting to take place among the signal wire L6 at electric current supplying wire L2, data line L1, for example, for the organic EL 29a that comprises among driving data line drive circuit 12a and the scan line drive circuit 12b, the logic power of power supply being supplied with driven various elements connects up 16 and 17, does not also need to be provided with in addition the wiring that static is emitted in new being used to.
So,, can improve the yield rate of the organic EL panel 10 in the manufacture process if, then can the patience that big change just can improve 10 pairs of static of organic panel not be made in design according to the holding circuit 11 of organic panel 10 relevant with present embodiment.Further, because also do not reduce the picture quality of organic El device 1, improve the yield rate in the manufacture process and do not reduce the high-quality organic El device 1 that picture quality is set up simultaneously so can provide to make.
(formation of pseudo-unit circuit)
Pseudo-unit circuit 28, except not having organic EL, comprise with unit circuit 20 in the same element of various elements that comprises, the connection of these elements with unit circuit 20 in various elements be connected identical.The drive TFT 23 that comprises in the TFT33 that comprises in the pseudo-unit circuit 28 and the unit circuit 20 is suitable, the wiring L4 connection that the source electrode of TFT33 is connected with power supply with drive current supplying electric current supply line L2.The source electrode of the drive TFT 32 that comprises in the pseudo-unit circuit 28 is connected with wiring L3.Again, pseudo-unit circuit 28 also can have the organic EL that is not connected with pseudo-unit circuit 28.Manufacturing condition of poor in the element-forming region peripheral part in organic EL is made is arranged on the organic EL that forms in the pseudo-unit circuit 28.
Further, pseudo-unit circuit 28, same with unit circuit 20, also can be connected with organic EL.By doing like this, can protect unit circuit 20 not to be subjected to electrostatic influence.
In the holding circuit 11 of the neighboring area of element-forming region 14, in the way of wiring L3 and L4, be provided with electrostatic discharge protective circuit ESD3 and ESD4 respectively.Electrostatic discharge protective circuit ESD3 and ESD4 and logic power wiring 16 are connected with 17; the static that will in wiring L3 and L4, take place be released to logic power with wiring 16 and 17 in, suppress the electrostatic breakdown of static to each element of comprising in pseudo-unit circuit 28 and the unit circuit 20.In the present embodiment,, can more positively protect pseudo-unit circuit 28 not to be subjected to electrostatic influence by in wiring L3 and L4, resistive element R31, R32 and R41 being set respectively again.
In the holding circuit 11 of the neighboring area of element-forming region 14; the example of electrostatic discharge protective circuit ESD5 relevant with the present invention " holding circuit that is used for pseudo-unit circuit "; have and above-mentioned electrostatic discharge protective circuit ESD1 and the same formation of ESD2; in the neighboring area of the periphery that is arranged in element-forming region 14, be arranged in the way of wiring L5.Electrostatic discharge protective circuit ESD5 is received in the static that takes place in the pseudo-unit circuit 28 through wiring L5, this static is released to a side of logic power wiring 16 and 17.So electrostatic discharge protective circuit ESD5 can be released to the static that takes place the outside of element-forming region 14 in pseudo-unit circuit 28, can suppress the electrostatic breakdown to pseudo-unit circuit 28.Again, in the present embodiment, resistive element R51 and R52 are arranged in the way of wiring L5, can more positively protect pseudo-unit circuit 28 not to be subjected to electrostatic influence.
Wiring L5 supplies with pseudo-unit circuit 28 with the power supply V3 of electronegative potential.Wiring L5 selects signal wire L6 to extend abreast to be arranged in the pseudo-unit circuit 28 with writing.By doing like this, can prevent that static from arriving unit circuit 20 and destroying unit circuits, and can prevent when making organic El device 1 luminous, luminous or flow through leakage current in pseudo-unit circuit.Supply with same current potential to wiring L3 and L4 respectively again.Here, also be connected with power supply V1.In Fig. 2, with common power supply V1 difference supplying electric current supply line L2, wiring L3 and wiring L4.Because it is idiostatic that electric current supplying wire L2 and wiring L3 become, so consumption of electric power not such as transistor 33, transistor 32.Can prevent that static from arriving unit circuit 20 and destroying unit circuits, and can prevent when making organic El device 1 luminous, luminous or flow through leakage current in pseudo-unit circuit.
(second embodiment)
Below, we illustrate other embodiment.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical with Fig. 2 in each mode below, and suitably omit explanation them with Fig. 1 with each unit of first embodiment.Figure 12 is the figure of the formation of the pattern ground expression organic El device 1 relevant with second embodiment.
In Figure 12, organic El device 1 has data line drive circuit 12a, scan line drive circuit 12b, holding circuit 11 and forms the element-forming region 14 of unit circuit 20.
Scan line drive circuit 12b selects the circuit that write selection signal S1 of signal wire L6 supply as an example of sweep signal to writing.Write and select signal S1 to be used for switch supplying with the grid of switch described later with TFT22 with the signal that TFT22 switches to activated state or inactive state.
Data line drive circuit 12a has the circuit that the sample circuit of the picture signal of sending from image signal generating circuit 71 being taken a sample in predetermined timing and data-signal I1 that will be corresponding with picture signal supply with data line L1, corresponding with switch with the conducting state of TFT22, data-signal I1 is supplied with data line L1.
The work of the work of scan line drive circuit 12b and data line drive circuit 12a realizes the phase mutually synchronization according to the synchronizing signal as the clock signal of supplying with respectively from control circuit 72, carries out luminous in the mode of active matrix.Again, logic power is supplied with data line drive circuit 12a and scan line drive circuit 12b from driving power circuit 73 with power supply with wiring 16 and 17.Here, logic power is supplied with the power supply V3 of low potential side with the power supply V2 of wiring 16 supply hot sides, logic power with wiring 17.Again, logic power is connected with holding circuit 11 with 17 with wiring 16.
Unit circuit 20, identical with Fig. 2, its formation comprises that switch is with TFT22, drive TFT 23, memory capacitance 24 and organic EL 29 as the example of " light-emitting component " relevant with the present invention.Again, data line drive circuit 12a and constituent parts circuit 20 couple together by data line L1, and scan line drive circuit 12b and constituent parts circuit 20 select signal wire L6 to couple together by writing.
Here, organic EL 29 by first electrode, second electrode and be clamped in first electrode and second electrode between luminescent layer constitute, with unit circuit 20 first electrode is set accordingly, a plurality of unit circuits 20 that are provided with jointly are provided with second electrode rectangularly.Be arranged on each first electrode in the unit circuit 20,, be connected with luminous power circuit 74 by the first power-supply wiring splicing ear 200 through the electric current supplying wire L2 and first power-supply wiring 18.Be arranged on second electrode in the element-forming region 14,, be connected with luminous power circuit 74 by second source wiring splicing ear 201 through second source wiring 19.Luminous power circuit 74 is supplied with power supply between the first power-supply wiring splicing ear 200 and the second source wiring splicing ear 201.Here, identical with Fig. 2, first power-supply wiring 18 constitutes by having the first power-supply wiring 18R, the 18G and the 18B that are electrically connected with first electrode (anode) of the organic EL that sends each coloured light respectively, but for the purpose of making the explanation simplification, 1 electric current supplying wire L2 corresponding with these organic ELs of all kinds has in the drawings only drawn.
The holding circuit 11 relevant with second embodiment has corresponding with electric current supplying wire L2, as the electrostatic discharge protective circuit ESD2 of the example of " holding circuit that is used for electric current supplying wire ".Electrostatic discharge protective circuit ESD2 be arranged on first power-supply wiring 18 and the electric current supplying wire L2 that in element-forming region 14, forms between.
Like this; if according to electrostatic discharge protective circuit ESD2; then can protect unit circuit 20 not to be subjected to the electrostatic influence that in the electric current supplying wire L2 or the first power-supply wiring splicing ear, takes place, can suppress the switch that comprises is used the electrostatic breakdown of the element of transistor 22 and driving transistors 23 in unit circuit 20.Further, holding circuit 11, same with the electrostatic discharge protective circuit ESD2 of Fig. 2,16 be connected with connecting up through electrostatic discharge protective circuit and logic power with 17.For static being released to the logic power wiring 16 and 17 that comprises among data line drive circuit 12a and the scan line drive circuit 12b, do not need to be provided with in addition the wiring that static is emitted in new being used to yet.
Again, identical with Fig. 2, electrostatic discharge protective circuit (drawing among the figure) can be arranged in the way of data line L1 yet.An example of this relevant with the present invention " holding circuit that is used for data line ".By doing like this, can protect unit circuit 20 not to be subjected to prevent from drive TFT 23 and memory capacitance 24, to take place electrostatic breakdown in possible trouble from the electrostatic influence of data line L1 process switch with the TFT22 inflow.
(variation 1 of second embodiment)
Below, our explanation makes the mode after the distortion of second embodiment.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical in each mode below, and suitably omit explanation them with Figure 12 with each unit of second embodiment.The figure of the formation of Figure 13 organic El device 1 that to be pattern ground expression relevant with the variation of second embodiment 1.
Unit circuit 20, identical with Fig. 2, its formation comprises that switch is with TFT22, drive TFT 23, memory capacitance 24 and organic EL 29 as the example of " light-emitting component " relevant with the present invention.Again, data line drive circuit 12a and constituent parts circuit 20 are coupled together, select signal wire L6 that scan line drive circuit 12b and constituent parts circuit 20 are coupled together by writing by data line L1.
Here, organic EL 29 by first electrode, second electrode and be clamped between this first electrode and second electrode luminescent layer constitute, with unit circuit 20 first electrode is set accordingly, a plurality of unit circuits 20 that are provided with jointly are provided with second electrode rectangularly.Be arranged on each first electrode in the unit circuit 20,, be connected with luminous power circuit 74 by the first power-supply wiring splicing ear 200 through the electric current supplying wire L2 and first power-supply wiring 18.Be arranged on second electrode in the element-forming region 14,, be connected with luminous power circuit 74 by second source wiring splicing ear 201 through wiring L7 and second source wiring 19.Second electrode is connected with unit circuit in element-forming region with wiring L7.Luminous power circuit 74 is supplied with power supply between the first power-supply wiring splicing ear 200 and the second source wiring splicing ear 201.Here, identical with Fig. 2, first power-supply wiring 18 constitutes by having the first power-supply wiring 18R, the 18G and the 18B that are electrically connected with first electrode (anode) of the organic EL that sends each coloured light respectively, but for the purpose of making the explanation simplification, 1 electric current supplying wire L2 corresponding with these organic ELs of all kinds has in the drawings only drawn.
The holding circuit 11 relevant with the mode after making the distortion of second embodiment has the electrostatic discharge protective circuit ESD7 between the electric current supplying wire L2 that is arranged on first power-supply wiring 18 and forms in element-forming region 14.Electrostatic discharge protective circuit ESD7 is made of the protecting component that is arranged between first power-supply wiring 18 and the second source wiring 19.Protecting component, for example same with electrostatic discharge protective circuit ESD2, constitute by diode.When first electrode is an anode; second electrode is a negative electrode; when carrying out luminous work with this light-emitting component; because wiring L7 and second source wiring 19 is in electronegative potential for the electric current supplying wire L2 and first power-supply wiring 18; so electrostatic discharge protective circuit ESD7 is connected with electric current supplying wire L2 by input terminal, lead-out terminal constitutes with the diode that wiring L7 is connected.When first electrode is a negative electrode, when second electrode is anode, connect the input terminal and the lead-out terminal of diode on the contrary.
If according to this holding circuit 11, then the static that takes place in the electric current supplying wire L2 or the first power-supply wiring splicing ear can be released to second source wiring 19.So, can suppress electrostatic breakdown to the element as the TFT that comprises in the unit circuit 20.So, even if when in element-forming region 14 static taking place, also can be added to the element that comprises in the unit circuit 20 and go forward, static is released to the outside of element-forming region 14, can suppress electrostatic breakdown the element that comprises in the unit circuit 20 at the unexpected voltage that will cause by static.
(variation 2 of second embodiment)
Below, our explanation makes the mode after the distortion of second embodiment.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical in each mode below, and suitably omit explanation them with Figure 12 with each unit of second embodiment.The figure of the formation of Figure 14 organic El device 1 that to be pattern ground expression relevant with the variation of second embodiment 2.
In element-forming region 14, light-emitting zone 202 that forms unit circuit 20 and the non-luminous region that pseudo-unit circuit 28 is arranged on light-emitting zone 202 peripheries are set.Identical with Fig. 2, the formation of unit circuit 20 comprises that switch is with TFT22, drive TFT 23, memory capacitance 24 and organic EL 29 as the example of " light-emitting component " relevant with the present invention.Again, pseudo-unit circuit 28 both can not had organic EL, can have the organic EL that is not connected with pseudo-unit circuit 28 yet.Again, the unfavorable condition in the element-forming region peripheral part in organic EL is made is arranged on the organic EL that forms in the pseudo-unit circuit 28.Further, pseudo-unit circuit 28, same with unit circuit 20, also can be connected with organic EL.By doing like this, can protect unit circuit 20 not to be subjected to electrostatic influence.
Further, both can in each of each periphery of the light-emitting zone 202 that rectangular area forms, 1 pseudo-unit circuit 28 be set, but a plurality of pseudo-unit circuits 28 also can be set.In the mode of surrounding light-emitting zone 202 pseudo-unit circuit 28 is set, but also can forms pseudo-unit circuit 28 along at least 1 limit of light-emitting zone 202.
The wiring that makes the wiring L3 that is connected with pseudo-unit circuit 28 and L4 become same current potential respectively.Here, be connected with first power-supply wiring 18.By doing like this, can prevent that static from arriving unit circuit 20 and destroying unit circuits, and can prevent when making organic El device 1 luminous, luminous or flow through leakage current in pseudo-unit circuit.
Preferably in the way of wiring L3 and L4, electrostatic discharge protective circuit ESD4 and ESD2 are set respectively again.Electrostatic discharge protective circuit ESD4 and ESD2 and logic power wiring 16 are connected with 17; the static that will in wiring L3 and L4, take place be released to logic power with wiring 16 and 17 in, suppress the electrostatic breakdown of static to each element of comprising in pseudo-unit circuit 28 and the unit circuit 20.Again, identical with Fig. 2, by in wiring L3 and L4, resistive element R31, R32 and R41 being set respectively, can more positively protect unit circuit 20 and pseudo-unit circuit 28 not to be subjected to electrostatic influence.
(variation 3 of second embodiment)
Below, our explanation makes the mode after the distortion of second embodiment.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical in each mode below, and suitably omit explanation them with Figure 12 with each unit of second embodiment.The figure of the formation of Figure 15 organic El device 1 that to be pattern ground expression relevant with the variation of second embodiment 3.
In element-forming region 14, light-emitting zone 202 that forms unit circuit 20 and the non-luminous region that pseudo-unit circuit 28 is arranged on light-emitting zone 202 peripheries are set.Further, the wiring L5 that is connected with pseudo-unit circuit 28 is connected with logic power wiring 17 through wiring 17a.Wiring L5 selects signal wire L6 to extend in parallel to be arranged in the pseudo-unit circuit 28 with writing.By doing like this, can prevent that static from arriving unit circuit 20 and destroying unit circuits, and can prevent when making organic El device 1 luminous, luminous or flow through leakage current in pseudo-unit circuit.
(the 3rd embodiment)
Below, to Fig. 6, one side illustrates other embodiment of the holding circuit of the electro-optical panel relevant with the present invention to one side with reference to Fig. 3.Fig. 3 is the figure of the formation of the unit circuit 120 that has of the expression organic El device 100 relevant with present embodiment, and Fig. 4 is the figure that amplifies a part of four jiaos of expression organic EL panel 110, is the figure that represents the formation of holding circuit 111.
In Fig. 3 and Fig. 4, the logic power wiring 116 and 117 that the organic El device 100 relevant with present embodiment has organic EL panel 110, supplies with the electric current supplying wire L22 of drive currents, data-signal supplied with the data line L21 of unit circuit 120, sweep signal is supplied with unillustrated data line drive circuit and scan line drive circuit among sweep trace L26, the figure of unit circuit 120 and power supply is supplied with data line drive circuit and scan line drive circuit to organic EL 129.Again; in the organic El device relevant with the 3rd embodiment with present embodiment; the organic El device that illustrates in the organic EL panel in the organic El device and the layout of the holding circuit that is arranged on the organic EL panel neighboring area and first embodiment is identical, and omission is to their detailed description.In the embodiment below, we mainly illustrate the formation of unit circuit and the formation of holding circuit.
(formation of unit circuit)
In Fig. 3 and Fig. 4, the formation of unit circuit 120 comprises drive TFT 123, switch TFT122a, 122b, 130, memory capacitance 214 and organic EL 129.
The source electrode of drive TFT 23 is connected with the electric current supplying wire L22 that supplies with drive current to organic EL 129, and on the other hand, the drain electrode of TFT130 is used in drain electrode respectively with switch, and the source electrode that switch is used TFT 122b with drain electrode and the switch of TFT122a is electrically connected.
Switch is changed on electricity with the grid of TFT122b jointly with the grid of TFT122a and switch, selected signal wire L26b or L26c to be electrically connected with writing of comprising among the sweep trace L26.
Switch is electrically connected with data line L21 with the source electrode of TFT122a, and drain electrode is electrically connected with the source electrode of switch with TFT 122b.Again, switch is electrically connected with an end of memory capacitance 124 with the drain electrode of TFT122b.When selecting signal S1 to become noble potential from writing writing of selecting that signal wire L26a supplies with, promptly during the H level, switch becomes activated state with TFT122a and 122b.
Memory capacitance 124, one ends are electrically connected with the drain electrode of switch with TFT 122b, and the other end is electrically connected with electric current supplying wire L22.Memory capacitance 124 is by the electric charge of drive TFT 123 store predetermined to the electric current of organic EL 129 supplies.
Switch TFT130, just thinking to supply with when the selection signal S2 of the selection signal wire L26b that is electrically connected with its drain electrode or L26c or S3 become the H level becomes activated state, to organic EL 129 supplying electric currents.Switch is electrically connected with first electrode (anode) of organic EL 129 with the source electrode of TFT130, and drain electrode is electrically connected with the drain electrode of drive TFT 123.
Organic EL 129 is that organic EL layer in clamping between first electrode (anode) and second electrode (negative electrode), with the luminous self-emission device of the corresponding brightness of suitable directional current from first electrode towards second electrode.Again, first electrode of organic EL 129 is electrically connected with the source electrode of switch with TFT130.On the other hand, second electrode of organic EL 129 is common in whole unit circuits 120, connects with the current potential (that is reference potential) of low potential side in the unillustrated power supply among the figure.
The electric current supplying wire L22 and first embodiment are same, with organic EL 129 drive current supply with unit circuit 120.Data line L21 is connected with the X actuator electrical, and data-signal 11 that will be corresponding with data-signal is supplied with constituent parts circuit 120.
The formation of sweep trace L26 comprises that writing of being connected with the X actuator electrical select signal wire L26a, select signal wire L26b and L26c.Write select signal wire L26a be for will programming phases described later voltage in the memory capacitance 124 of charge storage in each pixel is added to switch with the grid of TFT122a and 122b on and the wiring that is provided with selects signal wire L26b and L26c to supply with the wiring lines that switches to activated state or inactive state for the switch that unit circuit 120 is had with TFT130.
The organic El device 100 relevant with present embodiment be have the wavelength of all kinds that sends R (redness), G (green), B (blueness) light organic EL can the colored display device that shows.Select signal wire L26c to select signal GELG to supply with the selection signal wire of the unit circuit that comprises the organic EL that sends green light, to select signal wire L26b will select signal S2 to supply with and send the organic EL of red light and will select signal S2 to supply with the organic EL that sends blue light.
Below, our explanation has the work of the organic El device 100 of above-mentioned formation.
When scan line drive circuit selects signal S1 supply to write selection signal wire L26a writing of H level, voltage is added in this writes on the grid of switch with TFT122a and 122b of selecting in the corresponding unit circuit 120 (pixel column) of signal S1, these switches become activated state with TFT122a and 122b.
When switch became activated state with TFT122b, because conducting between the drain electrode of switch usefulness TFT122b and the source electrode, so the grid of drive TFT 123 and drain electrode become conducting state, 123 of drive TFT worked as diode.
On the other hand, be accompanied by and supply with writing of H level and select signal S1, also become activated state with the switch of commonization of TFT122a grid voltage with TFT122b with switch.The result, write select signal S1 be high level during in, data-signal I1 by the current source that is positioned at data line drive circuit is supplied with is using in the path of TFT122a, data line L21 mobile as electric current by electric current supplying wire L22, drive TFT 123, switch in turn.In this period, charge storage that will be corresponding with the potential difference (PD) of the current potential of the grid potential of drive TFT 123 and electric current supplying wire L22 is in memory capacitance 124.Supply with the electric charge of the electric current of organic ELs 129 because be stored in electric charge in the memory capacitance 124 and be regulation by drive TFT 123, so be called " programming phases " this period.
Select signal S1 to be controlled at electronegative potential (that is, the L level) when going up when scan line drive circuit will write, the programming phases that comprises the pixel column of unit circuit 120 finishes.Be accompanied by the end (that is, supply with writing of L level and select signal S1) of programming phases, switch becomes inactive state with TFT122a and 122b.But, because in memory capacitance 124, storing electric charge, so the grid potential of drive TFT 123 remains on the value in the past.
Selection signal S2 or S3 that scan line drive circuit is supplied with the H level in predetermined timing to the selection signal wire L26b or the L26c of the unit circuit 120 of programming phases end.When supplying with selection signal S2 or S3, switch becomes activated state with TFT130.Between the source electrode of drive TFT 123 and drain electrode, flowing according to it grid and reference potential between the electric current of the voltage that has.This electric current makes organic EL 129 luminous flowing in the path by electric current supplying wire L22, drive TFT 123, switch TFT130, organic EL 129 in turn.Because the luminous of organic EL 129 is to carry out according to the current value of programming in advance in the programming phases of last stage, so also be called " present stage again " between the light emission period with organic EL 129.
Scan line drive circuit in element-forming region 114, is implemented programming phases with pixel column unit, and scans by switching the pixel column of implementing this programming phases in turn.The pixel column that programming phases is through with separates and moves to present stage more predetermined time delay.With suitably by scan line drive circuit, for example, about certain pixel column, implement simultaneously programming phases and again the mode of present stage control this programming phases and the switching timing of present stage again.
Like this, organic El device 100 drives organic EL 129 with TFT130, memory capacitance 124 in current programmed mode with TFT122a and 122b, switch by drive TFT 123, switch, carries out image and shows.Particularly, electric current supplying wire L22 and data line L21 in order critically to carry out the programming by the data-signal I1 of electric current generation, connect power supply or current source and unit circuit 120 with low resistance.So, in the organic El device relevant 100 with present embodiment, because is a lot of to drive TFT 123 that is connected with electric current supplying wire L22 and the switch that is connected with data line L21 with the electrostatic breakdown of TFT122a, so when when programming with the current path that electric current supplying wire L22 is connected with data line L21, minimizing will be added to path that electric current flows by the unexpected voltage that static causes and be important on the mobile path of drive current when organic EL element 129 is luminous.
(formation of holding circuit)
In Fig. 3 and Fig. 4, organic El device 100 has the holding circuit 111 in the neighboring area of the element-forming region 114 that is arranged on the unit circuit 120 that comprises organic EL panel 110 and pseudo-unit circuit 128.
The holding circuit 111 relevant with present embodiment is included in the neighboring area that is arranged in element-forming region 114 peripheries, in the mode that clips element-forming region 114 each a pair of X side holding circuit 111a and Y side holding circuit 111b is set respectively.
X side holding circuit 111a has in the way that is arranged on electric current supplying wire L22 with logic power the wiring 116 and 117 electrostatic discharge protective circuit ESD22 that are electrically connected and is arranged in the way of data line L21 and the logic power 116 and 117 electrostatic discharge protective circuit ESD21 that are electrically connected that connect up.Electric current supplying wire L22 is the wiring that the organic EL that comprises in unit circuit 120 129 is supplied with drive currents, is connected with the source electrode of the drive TFT 123 that comprises in the unit circuit 120.Data line L21 is a signal wire of the electric current I corresponding with data-signal 1 being supplied with unit circuit 120, is connected with the source electrode of the switch that comprises in the unit circuit 120 with TFT122a.
Be arranged on the example of the electrostatic discharge protective circuit ESD22 relevant with the present invention " holding circuit that is used for electric current supplying wire " in the electric current supplying wire L22 way, be electrically connected with the logic power wiring 117 of the power supply V3 that supplies with electronegative potential and the logic power wiring 116 of the power supply V2 that supplies with noble potential.Electrostatic discharge protective circuit ESD22, same with first embodiment, a corresponding side who this static is released to logic power wiring 116 and 117 with the current potential of the static that in electric current supplying wire L22, takes place.So electrostatic discharge protective circuit ESD22 is released to logic power wiring 116 or 117 by the static that will take place in electric current supplying wire L22, suppress the electrostatic breakdown to the drive TFT 123 that comprises in the unit circuit 120.Electrostatic discharge protective circuit ESD22 is not because the not effect of resistance of drive current to supplying with organic EL 129 from electric current supplying wire L22 so do not hinder the luminous of organic EL 129, can reduce the picture quality of organic El device 100.
Be arranged on the example of the electrostatic discharge protective circuit ESD21 relevant with the present invention " holding circuit that is used for data line " in the data line L21 way.The same wiring with 2 logic powers of electrostatic discharge protective circuit ESD21 and electrostatic discharge protective circuit ESD22 116 is connected with 117.Electrostatic discharge protective circuit ESD21 and electrostatic discharge protective circuit ESD22 are same, and the static that takes place among the data line L21 is released to logic power wiring 116 or 117, can reduce the electrostatic breakdown of the switch that comprises in the unit circuit 120 being used TFT122a.
Electrostatic discharge protective circuit ESD21 can emit the static that the electrostatic discharge protective circuit ESD22 that is arranged among the electric current supplying wire L22 is difficult to emit, and promptly the static that takes place among the data line L21 can protect unit circuit 120 not to be subjected to the electrostatic influence that takes place in data line L21.In the present embodiment, in data line L21 way, resistive element R21 is set, can more positively protects unit circuit 120 not to be subjected to electrostatic influence.
If according to electrostatic discharge protective circuit ESD21 and ESD22, then do not hinder flowing of various electric currents required when making organic EL 129 luminous, can protect unit circuit 120 not to be subjected to the electrostatic influence that takes place among electric current supplying wire L22 and the data line L21.Therefore, the picture quality that can make protection unit circuit 120 not be subjected to electrostatic influence and not reduce organic El device 100 is set up simultaneously.
Y side holding circuit 111b have be separately positioned on write select signal wire L26a, select signal wire L26b and L26c separately in the way with logic power wiring 116 or 117 electrostatic discharge protective circuit ESD26a, ESD26b and the ESD26c that are electrically connected, be arranged on electric current supplying wire L22 and the electrostatic discharge protective circuit ESD25 between the element-forming region 114 that the Y direction extends and be arranged on logic power connect up 117 and pseudo-unit circuit 128 between electrostatic discharge protective circuit ESD27.
The example of electrostatic discharge protective circuit ESD26a, ESD26b and ESD26c relevant with the present invention respectively " holding circuit that is used for sweep trace " has the formation that has 2 diodes that are connected in series with above-mentioned electrostatic discharge protective circuit ESD11 and 12 equally.The corresponding side who static is released to logic power wiring 116 or 117 of the electrostatic potential that takes place among electrostatic discharge protective circuit ESD26a, ESD26b and ESD26c and the sweep trace L26.So, electrostatic discharge protective circuit ESD26a, ESD26b and ESD26c, can protection switch with TFT122a and 122b, further switch is not subjected to the electrostatic influence that takes place among the sweep trace L26 with TFT130.Again, in the present embodiment, resistance R 26 is set in the way of sweep trace L26, can more positively protects unit circuit 120 not to be subjected to electrostatic influence.
Wiring 118 is electrically connected with the logic power wiring 117 of electronegative potential.
The example of electrostatic discharge protective circuit ESD27 relevant with the present invention " holding circuit that is used for pseudo-unit circuit "; be set in place between wiring 118 in the neighboring area of the periphery of element-forming region 114 and the element-forming region 114 in extension and be provided with, the static that takes place in the pseudo-unit circuit 128 is released to wiring 118.At pseudo-unit circuit 128 with connect up between 118, extend the electric current supplying wire L22a that Y direction is in the drawings extended is set again.Electric current supplying wire L22a is still than the not thick wiring of other wiring, and easily with the static savings wiring intersect the zone in.Therefore; by 114 1 sides are provided with electrostatic discharge protective circuit ESD27 from electric current supplying wire L22a to element-forming region; can suppress and to be added on the element-forming region 114 by the unexpected voltage that static causes, and the static that takes place in the pseudo-unit circuit 128 can be released in the wiring 118.Again, in the present embodiment, resistive element R27 is arranged between wiring 118 and the element-forming region 114, can more positively protects pseudo-unit circuit 128 not to be subjected to electrostatic influence.
In the present embodiment, the formation of electric current supplying wire L22 is included in the neighboring area of element-forming region 114 respectively main line L22a that extends along directions X and Y direction and the branch line L22b that extends from each main line L22a element-forming region 114.Because unit circuit 120 rectangular ground alignment arrangements in element-forming region 114, are arranged in the element-forming region 114 so branch line L22b extends along each row of unit circuit 120 and each row.Branch line L22b is electrically connected in element-forming region 114 mutually, be configured for supplying with to constituent parts circuit 120 drive current of organic EL 129, and the static that will take place in element-forming region 114 is released to outside current path.If according to the design of this branch line L22b, then in element-forming region 114, spread all over current path, can easily static be released to the outside through branch line L22b.
The static that electrostatic discharge protective circuit ESD25 that Y side holding circuit 111b is had and electrostatic discharge protective circuit ESD22 will take place in the main line L22a of the electric current supplying wire L22 that the Y direction is extended equally is released to logic power wiring 116 or 117, protects pseudo-unit circuit 128 not to be subjected to electrostatic influence.
If according to the holding circuit relevant 111 with present embodiment; then relevant with first embodiment holding circuit 11 is same; can the patience to static that big change just can improve organic panel 110 not be made in design, can be improved the yield rate of the organic EL panel 110 in the manufacture process.Further, because also do not reduce the picture quality of organic El device 100, improve the yield rate in the manufacture process and do not reduce the high-quality organic El device that picture quality is set up simultaneously so can provide to make.
(variation 1 of the 3rd embodiment)
Below, our explanation makes the mode of the 3rd embodiment distortion.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical with Fig. 4 in each mode below, and suitably omit explanation them with Fig. 3 with each unit of the 3rd embodiment.Fig. 5 is the figure that is used to illustrate an example of relevant with the present invention " holding circuit that is used for data line ", and Fig. 6 is the figure that is used to illustrate the protection diode that is connected between data line and the electric current supplying wire.
In Fig. 5, an example of " holding circuit that is used for data line " that transistor T 1 is relevant with the present invention with the T2 formation.Transistor T 1 and the wiring L29 that is electrically connected with second electrode (negative electrode) the side VCT of organic EL 29 and data line L21 are electrically connected.Transistor T 2 is electrically connected with the branch line L22b of data line L21 and electric current supplying wire L22.Transistor T 1 and T2 constitute electrostatic discharge protective circuit ESD100, the static that takes place in data line L21 is fled to be released to electric current supplying wire L22b and at least one side of the L29 that connects up.Electrostatic discharge protective circuit ESD100 for example, extends the branch line L22b that is provided with and the mode of data data line L21 sets to be connected in the pseudo-unit circuit 128.Here, wiring L29 also can be connected with the ground connection side.
Again, as shown in Figure 6, also electrostatic discharge protective circuit ESD101 can be connected extend be arranged on the unit circuit 120 that comprises in the element-forming region 114 ' in data line L21 ' and electric current supplying wire L22 ' between.ESD101 is made of a plurality of transistors, and the static that the side in data line L21 ' and electric current supplying wire L22 ' is taken place is fled from the opposing party.Therefore, can more positively protect unit circuit 120 ' be not subjected to electrostatic influence.
(variation 2 of the 3rd embodiment)
Below, our explanation makes the mode of the 3rd embodiment distortion.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical with Fig. 4 in each mode below, and suitably omit explanation them with Fig. 3 with each unit of the 3rd embodiment.Figure 16 is the figure of the formation of the pattern ground expression organic El device 100 relevant with the mode that makes the distortion of the 3rd embodiment.
In Figure 16, organic El device 100 has data line drive circuit 112a, scan line drive circuit 112b, holding circuit 111 and forms the element-forming region 114 of unit circuit 120.
Scan line drive circuit 112b is to selecting signal wire L26a, L26b, L26c, supplying with the selection signal S1 of an example of sweep signal, the circuit of S2, S3.
Data line drive circuit 112a has the circuit that the sample circuit of the picture signal of sending from image signal generating circuit 71 being taken a sample in predetermined timing and data-signal Idata that will be corresponding with picture signal supply with data line L21.
The work of the work of scan line drive circuit 112b and data line drive circuit 112a realizes the phase mutually synchronization according to the synchronizing signal as the clock signal of supplying with respectively from control circuit 72, carries out luminous in the mode of active matrix.Again, logic power is supplied with data line drive circuit 112a and scan line drive circuit 112b from driving power circuit 73 with power supply with wiring 116 and 117.Here, logic power is supplied with the power supply V3 of low potential side with the power supply V2 of wiring 116 supply hot sides, logic power with wiring 117.Again, logic power is connected with holding circuit 111 with 117 with wiring 116.
Unit circuit 120, identical with Fig. 4, its formation comprises drive TFT 123, switch TFT122a, 122b, 130, memory capacitance 124 and organic EL 129.
Here, organic EL 129 by first electrode, second electrode and be clamped between this first electrode and second electrode luminescent layer constitute, with unit circuit 120 first electrode is set accordingly, a plurality of unit circuits 120 that are provided with jointly are provided with second electrode rectangularly.Be arranged on each first electrode in the unit circuit 120,, be connected with luminous power circuit 74 by the first power-supply wiring splicing ear 200 through the electric current supplying wire L22b and first power-supply wiring 118.Be arranged on second electrode in the element-forming region 114,, be connected with luminous power circuit 74 by second source wiring splicing ear 201 through second source wiring 119.Luminous power circuit 74 is supplied with power supply between the first power-supply wiring splicing ear 200 and the second source wiring splicing ear 201.Here, identical with Fig. 2, first power-supply wiring 118 constitutes by having the first power-supply wiring 18R, the 18G and the 18B that are electrically connected with first electrode (anode) of the organic EL that sends each coloured light respectively, but for the purpose of making the explanation simplification, 1 electric current supplying wire L22b corresponding with these organic ELs of all kinds has in the drawings only drawn.
The light-emitting device relevant with the present invention has the electrostatic discharge protective circuit ESD22 as an example of " holding circuit that is used for electric current supplying wire ".Electrostatic discharge protective circuit ESD22 is arranged between the first current supply L22b and first power-supply wiring 118 that is connected with unit circuit 120.
Like this; if according to the relevant holding circuit 111 of mode that makes the 3rd embodiment distortion; then can protect unit circuit 120 not to be subjected to the electrostatic influence that in first power-supply wiring 118, electric current supplying wire L22b or the first power-supply wiring splicing ear 200, takes place, can suppress the switch that comprises is used the electrostatic breakdown of the element of transistor 122a and driving transistors 123 in unit circuit 120.Further, holding circuit 111, same with the electrostatic discharge protective circuit ESD2 of Fig. 2,116 be connected with connecting up through electrostatic discharge protective circuit and logic power with 117.For static being released to the logic power wiring 116 and 117 that comprises among data line drive circuit 112a and the scan line drive circuit 112b, do not need to be provided with in addition the wiring that static is emitted in new being used to.
Again, the light-emitting device relevant with the present invention has the electrostatic discharge protective circuit ESD21 as an example of " holding circuit that is used for data line ".Electrostatic discharge protective circuit ESD21 is arranged between data line drive circuit 112a and the data line L21.Like this; if with the relevant holding circuit 111 of mode that makes the distortion of the 3rd embodiment; then can protect unit circuit 120 not to be subjected to the electrostatic influence that takes place among the data line L21, can suppress the switch that comprises is used the electrostatic breakdown of the element of transistor 122a and driving transistors 123 in unit circuit 120.Further, holding circuit 111, same with the electrostatic discharge protective circuit ESD2 of Fig. 2,116 be connected with connecting up through electrostatic discharge protective circuit ESD21 and logic power with 117.For static being released to the logic power wiring 116 and 117 that comprises among data line drive circuit 112a and the scan line drive circuit 112b, do not need to be provided with in addition the wiring that static is emitted in new being used to.
In element-forming region 114, light-emitting zone 202 that forms unit circuit 120 and the non-luminous region that pseudo-unit circuit 128 is arranged on light-emitting zone 202 peripheries are set again.
The wiring that makes the wiring L21 that is connected with pseudo-unit circuit 128 and L22b become same current potential respectively.Here, be connected with first power-supply wiring 118.By doing like this, can prevent that static from arriving unit circuit 120 and destroying unit circuits, and can prevent when making organic El device 100 luminous, luminous or flow through leakage current in pseudo-unit circuit.
Preferably in the way of wiring L21 and L22b, electrostatic discharge protective circuit ESD24 and ESD23 are set respectively again.Electrostatic discharge protective circuit ESD24 and ESD23 are examples of " holding circuit that is used for pseudo-unit circuit ".Electrostatic discharge protective circuit ESD24 and ESD23 and logic power wiring 116 are connected with 117; the static that will take place in wiring L21 and L22b is released in the logic power wiring 116 and 117, suppresses the electrostatic breakdown of static to each element of comprising in pseudo-unit circuit 128 and the unit circuit 120.Again, identical with Fig. 2, by in wiring L21 and L22b, resistive element being set respectively, can more positively protect unit circuit 120 and pseudo-unit circuit 128 not to be subjected to electrostatic influence.
Further, the wiring L27 that is connected with pseudo-unit circuit 128 is connected with logic power wiring 117 through wiring 117a.By doing like this, can prevent that static from arriving unit circuit 120, and then prevent to destroy unit circuit, and can prevent when making organic El device 100 luminous, luminous or flow through leakage current in pseudo-unit circuit 12.
(variation 3 of the 3rd embodiment)
Below, our explanation makes the mode of the 3rd embodiment distortion.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical with Fig. 4 in each mode below, and suitably omit explanation them with Fig. 3 with each unit of the 3rd embodiment.Figure 17 is the figure of the formation of the pattern ground expression organic El device 100 relevant with the mode that makes the distortion of the 3rd embodiment.
In Figure 17, organic El device 100 has data line drive circuit 112a, scan line drive circuit 112b, holding circuit 111 and forms 120 element-forming region 114 of unit circuit.
Again, logic power is supplied with data line drive circuit 112a and scan line drive circuit 112b from driving power circuit 73 with power supply with wiring 116 and 117.Here, logic power is supplied with the power supply V3 of low potential side with the power supply V2 of wiring 116 supply hot sides, logic power with wiring 117.Again, logic power is connected with holding circuit 111 with 117 with wiring 116.
Unit circuit 120, identical with Fig. 4, its formation comprises drive TFT 123, switch TFT122a, 122b, 130, memory capacitance 124 and organic EL 129.
Here, organic EL 129 by first electrode, second electrode and be clamped between this first electrode and second electrode luminescent layer constitute, with unit circuit 120 first electrode is set accordingly, a plurality of unit circuits 120 that are provided with jointly are provided with second electrode rectangularly.Be arranged on each first electrode in the unit circuit 120,, be connected with luminous power circuit 74 by the first power-supply wiring splicing ear 200 through the electric current supplying wire L22b and first power-supply wiring 118.Be arranged on second electrode in the element-forming region 114,, be connected with luminous power circuit 74 by second source wiring splicing ear 201 through wiring L29 and second source wiring 119.Luminous power circuit 74 is supplied with power supply between the first power-supply wiring splicing ear 200 and the second source wiring splicing ear 201.Here, identical with Fig. 2, first power-supply wiring 118 constitutes by having the first power-supply wiring 18R, the 18G and the 18B that are electrically connected with first electrode (anode) of the organic EL that sends each coloured light respectively, but for the purpose of making the explanation simplification, 1 electric current supplying wire L22b corresponding with these organic ELs of all kinds has in the drawings only drawn.
The light-emitting device relevant with the present invention has the electrostatic discharge protective circuit ESD100 as an example of " holding circuit that is used for data line ".Electrostatic discharge protective circuit ESD100 is connected with data line L21, is made of the diode that is arranged on the diode between first power-supply wiring 118 and the data line L21 and be arranged between second source wiring 119 and the data line L21.
If according to this holding circuit 111; then can protect unit circuit 120 not to be subjected to the electrostatic influence that in data line L21, takes place, can suppress the switch that comprises is used the electrostatic breakdown of the element of transistor 122a and driving transistors 123 in unit circuit 120.Further, holding circuit 111 is connected with wiring L29 with electric current supplying wire L22.Because static is released to electric current supplying wire L22 and wiring L29, so also do not need to be provided with in addition the wiring that static is emitted in new being used to.Again, between the electric current supplying wire L22 and first power-supply wiring 118 that in element-forming region 114, forms, and, form diode respectively between wiring L29 that in element-forming region 114, forms and the second source wiring 119.Here, first power-supply wiring 118 is with many electric current supplying wire L22 of current supply, and second source wiring 119 is with many wirings of current supply L29.So an electric current supplying wire L22 is low for the resistance ratio of one first power-supply wiring 118.If use same wiring, then the wiring width of first power-supply wiring 118 is thicker than electric current supplying wire L22.Equally, a wiring of the resistance ratio L29 of a second source wiring 119 is low.If use same wiring, then the wiring width of second source wiring 119 is thicker than wiring L29.Suppose,, also can clear up static from first power-supply wiring 118 or second source 119 moments of connecting up even if in data line L21, put aside static.
(the 4th embodiment)
Below, one side is with reference to Fig. 7 and Fig. 8, and one side illustrates other embodiment of the light-emitting device relevant with the present invention.Fig. 7 is the figure of the formation of the expression organic El device 200 relevant with present embodiment, and Fig. 8 is the figure that amplifies a part of four jiaos of expression organic EL panel 210, is the figure of the formation of expression holding circuit 211.
The logic power wiring 216 and 217 that the organic El device 200 relevant with present embodiment has organic EL panel 210, supplies with the electric current supplying wire L32 of drive currents, data-signal supplied with the data line L31 of unit circuit 220, sweep signal is supplied with unillustrated data line drive circuit and scan line drive circuit among sweep trace L36, the figure of unit circuit 220 and power supply is supplied with data line drive circuit and scan line drive circuit to organic EL 229.
(formation of unit circuit)
In Fig. 7 and Fig. 8, memory capacitance 224 and organic EL 229 that the formation of unit circuit 220 comprises the TFT222a, the 222b that work as first～the 4th on-off element, 222c and 223, drive TFT 230, works as capacity cell.
The source electrode of drive TFT 230 is connected with first electrode (anode) of organic EL 229, and on the other hand, switch is connected with the end (drain electrode) of switch with TFT222c with the drain electrode of drive TFT 230 respectively with the source electrode of TFT223.Here, switch is connected with selecting signal wire L36b or L36c with the grid of TFT223.Therefore, switch TFT223 is if to select signal S2 or S3 be the H level then become activated state, if for the L level then become inactive state.
The source electrode of drive TFT 230 is connected with first electrode (anode) of organic EL 229, on the other hand, organic EL 229 has switch is electrically interposed in electric current for the formation in the path between the second electrode side (VCT) of line L32 and organic EL 229 together with TFT223 and drive TFT 230.
The grid of drive TFT 230 is connected with the source electrode of switch with TFT222c with an end of memory capacitance 224 respectively.
Switch is electrically interposed between the drain and gate of drive TFT 230 with TFT222c, and switch uses the grid of TFT222c to be connected with control line 236.Therefore, switch TFT222c connects when control signal GINIT is the H level, and drive TFT 230 is worked as diode.
On the one hand, switch is connected with feed line 237 with the end (drain electrode) of TFT222b, and on the other hand, the other end (source electrode) is connected with the end (drain electrode) of TFT222a and the other end of memory capacitance 224 with switch respectively.Switch is connected with control line 236 with the grid of TFT222b.Therefore, switch TFT222b becomes activated state when control signal GINIT is the H level.
Further, switch is connected with data line L31 with the other end (source electrode) of TFT222a, and the write signal line L36a that comprises among its grid and the sweep trace L36 is connected.Therefore, switch TFT222a becomes activated state when writing when selection signal S1 is the H level, and the data-signal that will supply with data line L31 is supplied with the other end of memory capacitance 224.
Unit circuit 220 has the formation according to the switch operating of the activated state of common control its switch usefulness TFT222b of the control signal GINIT that supplies with control line 236 and 222c and inactive state.Unit circuit 220 can make organic EL 229 luminous according to the voltage-programming mode, further, scattered irrelevant with the threshold voltage of drive TFT 230, desired drive current can flow in organic EL 229.In unit circuit 220, before the voltage on the grid that keeps drive TFT 230, making control signal GINIT is the H level, and switch is an activated state with TFT222b and 222c, and initialization is carried out at the two ends of memory capacitance 224.Meanwhile, drive TFT 230 is worked as diode, the threshold voltage that the grid voltage of drive TFT 230 is become with drive TFT 230 is worth accordingly.Making control signal GINIT is the L level, and after switch was inactive state with TFT222b and 222c, making switch TFT222a was activated state, keeps from the data-signal of the data line L31 grid voltage as drive TFT 230.When making organic EL 229 luminous, correspondingly on the grid of drive TFT 230, add voltage with the current potential that remains on the electric charge in the memory capacitance 224.Drive current is flowed in organic EL 229.In organic El device 200, because static takes place easily in electric current supplying wire L32, be important with the electrostatic breakdown of TFT222a so suppress the switch that is connected with data line L31 to the switching TFT 223 that is connected with electric current supplying wire L32, with driving transistors 230.
(formation of holding circuit)
One side is with reference to Fig. 7, and one side describes the holding circuit 211 that organic El device 200 has in detail.
In Fig. 7, organic El device 200 has the holding circuit 211 in the neighboring area that is arranged on the element-forming region 214 that comprises unit circuit 220 and pseudo-unit circuit 228.
The holding circuit 211 relevant with present embodiment is included in the neighboring area that is arranged in element-forming region 214 peripheries, in the mode that clips element-forming region 214 each a pair of X side holding circuit 211a and Y side holding circuit 211b is set respectively.In addition, we are described in detail in a part of four jiaos of organic EL panel 210 in the holding circuit 211.
X side holding circuit 111a has in the way that is arranged on electric current supplying wire L32 with logic power the wiring 216 and 217 electrostatic discharge protective circuit ESD32 that are electrically connected and is arranged in the way of data line L31 and logic power 216 and 217 electrostatic discharge protective circuit ESD31a and the ESD31b that are electrically connected that connect up.
Electric current supplying wire L32 is connected with the source electrode of the switch that comprises in unit circuit 220 with TFT223.Drive current is supplied with the organic EL 229 that in unit circuit 220, comprises.Data line L31 is a signal wire of data-signal being supplied with unit circuit 220, is connected with the source electrode of the switch that comprises in the unit circuit 220 with TFT222a.
Be arranged on the example of the electrostatic discharge protective circuit ESD32 relevant with the present invention " holding circuit that is used for electric current supplying wire " in the electric current supplying wire L32 way, be electrically connected with the logic power wiring 217 of the power supply of supplying with electronegative potential and the logic power wiring 216 of the power supply of supplying with noble potential.Electrostatic discharge protective circuit ESD32; have 2 diodes that are connected in series; same with the electrostatic discharge protective circuit that in first embodiment and the 3rd embodiment, illustrates, a corresponding side who this static is released to logic power wiring 216 or 217 with the electrostatic potential that takes place among the electric current supplying wire L32.So,, then can reduce the electrostatic breakdown of switch with TFT223 and drive TFT 230 if according to electrostatic discharge protective circuit ESD32.Electrostatic discharge protective circuit ESD32 is because the not effect of resistance of drive current to supplying with organic EL 229 from electric current supplying wire L32 so do not hinder the luminous of organic EL 229, also can not reduce the picture quality of organic El device 200.
Be arranged on an electrostatic discharge protective circuit ESD31a in the data line L31 way and the example of ESD31b relevant with the present invention respectively " holding circuit that is used for data line ".Electrostatic discharge protective circuit ESD31a and ESD31b are connected with 217 with logic power wiring 216 respectively.Electrostatic discharge protective circuit ESD31a and ESD31b; same with first embodiment and second embodiment respectively; the static that takes place among the data line L31 is released to a side of logic power wiring 216 or 217, can reduces electrostatic breakdown the switch usefulness TFT222a that comprises in the unit circuit 220.
2 electrostatic discharge protective circuit ESD31a and 31b are arranged on the position of the area B that sandwiches in the neighboring area of element-forming region 214 the electric current supplying wire L32 that extends along directions X in the way of data line L31 and intersect along the data line L31 that the Y direction is extended.The area B that electric current supplying wire L32 and data line L31 intersect is the zone of putting aside static easily; if according to 2 electrostatic discharge protective circuit ESD31a and ESD31b; then the static of savings in this zone can be released to logic power wiring 216 or 217, can suppress the switch that comprises in the unit circuit 220 is used with TFT223 and switch the electrostatic breakdown of TFT222a.Again, in the present embodiment, also in the way of data line L31, resistive element R31a and R31b are set, can more positively protect unit circuit 220 not to be subjected to electrostatic influence.
If according to electrostatic discharge protective circuit ESD32, ESD31a and ESD31b; then do not hinder flowing of various electric currents required when making organic EL 229 luminous; can protect unit circuit 220 not to be subjected to the electrostatic influence that takes place among electric current supplying wire L32 and the data line L31, and can not reduce the picture quality of organic El device 200.
Y side holding circuit 211b have be arranged on write select signal wire L36a, select signal wire L36b and L36c separately in the way with logic power wiring 216 and 217 electrostatic discharge protective circuit ESD36a1, the ESD36a2 that are electrically connected, ESD36b1, ESD36b2, ESD36c1, ESD36c2, be arranged on the electrostatic discharge protective circuit ESD35 between electric current supplying wire L32 and the element-forming region 214 and be arranged on low potential side power lead 217 and pseudo-unit circuit 228 between electrostatic discharge protective circuit ESD34.
The example of electrostatic discharge protective circuit ESD36a1, ESD36a2, ESD36b1, ESD36b2, ESD36c1, ESD36c2 relevant with the present invention respectively " holding circuit that is used for sweep trace ".Electrostatic discharge protective circuit ESD36a1 and ESD36a2 can not write the electrostatic influence that takes place among the selection signal wire L36a by protection switch with TFT222a.Equally, electrostatic discharge protective circuit ESD36b1, ESD36b2, ESD36c1, the ESD36c2 static that will select to take place among signal wire L36b and the L36c is released to a side of logic power wiring 216 and 217.If so, then can reduce electrostatic breakdown to each element that comprises in the unit circuit 220 according to electrostatic discharge protective circuit ESD36a1, ESD36a2, ESD36b1, ESD36b2, ESD36c1, ESD36c2.Again, in the present embodiment, resistance R 36 is set in the way of sweep trace L36, can more positively protects unit circuit 220 not to be subjected to electrostatic influence.
Select the mode of the zone C that signal wire L36a and electric current supplying wire L32 intersect to dispose electrostatic discharge protective circuit ESD36a1 and ESD36a2 to clip writing between electrostatic discharge protective circuit ESD36a1 and the ESD36a2.Equally, also dispose electrostatic discharge protective circuit ESD36b1, ESD36b2, ESD36c1, ESD36c2 in the mode that clips the zone C of selecting signal wire L36b and L36c intersection.Electrostatic discharge protective circuit ESD36a1, ESD36a2, ESD36b1, ESD36b2, ESD36c1, ESD36c2; will not be added to the mode on unit circuit 220 or the pseudo-unit circuit 228 in the zone of electric current supplying wire L32 and sweep trace L36 intersection, static is fled from by the unexpected voltage that the static that accumulates causes.
With the logic power wiring 217 electrostatic discharge protective circuit ESD34 that are connected of electronegative potential the static that takes place in the pseudo-unit circuit 228 is released to logic power wiring 217, suppresses electrostatic breakdown pseudo-unit circuit 228.At pseudo-unit circuit 228 with connect up between 217, extend the electric current supplying wire L32 that Y direction is in the drawings extended is set again.Electric current supplying wire L32 is still than the not thick wiring of other wiring, and easily with the static savings wiring intersect the zone in.Therefore; by 214 1 sides are provided with electrostatic discharge protective circuit ESD34 from electric current supplying wire L32 to element-forming region; can suppress and to be added on the element-forming region 214 by the unexpected voltage that static causes, and the static that takes place in the pseudo-unit circuit 228 can be released in the logic power wiring 216 or 217.
In the present embodiment, electric current supplying wire L32, same with second embodiment, be included in the main line of the electric current supplying wire L32 in the neighboring area of element-forming region 214 and the branch line that element-forming region 214, extends from this main line.So, can constitute the current path that the element-forming region 214 interior static that take place is released to the outside, straining element forms the electrostatic breakdown of the static of generation in the zone 214 to unit circuit 220.
If according to the holding circuit relevant 211 with present embodiment; then relevant with second embodiment with first embodiment holding circuit is same; can the patience to static that big change just can improve organic panel not be made in design, can be improved the yield rate of the organic EL panel in the manufacture process.Further, because also do not reduce the picture quality of organic El device, improve the yield rate in the manufacture process and do not reduce the high-quality organic El device that picture quality is set up simultaneously so can provide to make.
(variation of the 4th embodiment)
Below, our explanation makes the mode of the 4th embodiment distortion.In addition, also can suitably make up following illustrated each mode.Again, on the key element identical, add the label identical with Fig. 8 in each mode below, and suitably omit explanation them with Fig. 7 with each unit of the 4th embodiment.Figure 18 is the figure of the formation of the pattern ground expression organic El device 200 relevant with the mode that makes the distortion of the 4th embodiment.
In Figure 18, organic El device 200 has data line drive circuit 12a, scan line drive circuit 12b, holding circuit 211 and forms the element-forming region 214 of unit circuit 220.
Again, logic power is supplied with data line drive circuit 12a and scan line drive circuit 12b from driving power circuit 73 with power supply with wiring 216 and 217.Logic power is supplied with the power supply V3 of low potential side with the power supply V2 of wiring 216 supply hot sides, logic power with wiring 217.Again, logic power is connected with holding circuit 211 with 217 with wiring 216.
Unit circuit 220, identical with Fig. 8, memory capacitance 224 and organic EL 229 that its formation comprises the TFT222a, the 222b that work as first～the 4th on-off element, 222c and 223, drive TFT 230, works as capacity cell.
Here, organic EL 229 by first electrode, second electrode and be clamped between this first electrode and second electrode luminescent layer constitute, with unit circuit 220 first electrode is set accordingly, a plurality of unit circuits 220 that are provided with jointly are provided with second electrode rectangularly.Be arranged on each first electrode in the unit circuit 220,, be connected with luminous power circuit 74 by the first power-supply wiring splicing ear 200 through the electric current supplying wire L32 and first power-supply wiring 218.Be arranged on second electrode in the element-forming region 214,, be connected with luminous power circuit 74 by second source wiring splicing ear 201 through second source wiring 219.Luminous power circuit 74 is supplied with power supply between the first power-supply wiring splicing ear 200 and the second source wiring splicing ear 201.Again, same with wiring 237, be connected supply power VINIT with luminous power circuit 74 by the 3rd power-supply wiring splicing ear 203.Here, identical with Fig. 2, first power-supply wiring 218 constitutes by having the first power-supply wiring 18R, the 18G and the 18B that are electrically connected with first electrode (anode) of the organic EL that sends each coloured light respectively, but for the purpose of making the explanation simplification, 1 electric current supplying wire L32 corresponding with these organic ELs of all kinds has in the drawings only drawn.
The light-emitting device relevant with the present invention has the electrostatic discharge protective circuit ESD101 as an example of " holding circuit that is used for data line ".Electrostatic discharge protective circuit ESD101 is connected with data line L31, is made of the diode that is arranged on the diode between electric current supplying wire L32 and the data line L31 and be arranged between wiring 237 and the data line L31.
If according to this holding circuit 211; then can protect unit circuit 220 not to be subjected to the electrostatic influence that in data line L31, takes place, can suppress the switch that comprises is used the electrostatic breakdown of the element of transistor 222a and driving transistors 230 in unit circuit 220.Further, holding circuit 211 is connected with wiring 237 with electric current supplying wire L32.For static being released to electric current supplying wire L32 and wiring 237, do not need to be provided with in addition the wiring that static is emitted in new being used to yet.
Again; except having illustrated referring to figs. 1 through Figure 18 the formation of image element circuit, also can will be applied to for example have the organic EL panel etc. of image element circuit of the variety of way of the image element circuit of voltage program-type, the image element circuit of voltage manner of comparison, the image element circuit of subframe mode etc. with the same or similar holding circuit of present embodiment.
Again, Fig. 1 is illustrated with organic El device to Figure 18, but the present invention also is applicable to and utilizes inorganic EL element, field emission (FE) element, surface conduction type emission (SE) element, ballistic electron emission (BS) element, LED (Light Emitting Diode: the light-emitting device of other self-emission device of element etc. light emitting diode).Again, we have illustrated the light-emitting device of rectangular ground setting unit circuit, but also go for unit circuit is arranged to the light-emitting device of 1 row.Further, the present invention is not limited to display device, also can similarly apply the present invention to the light-emitting device of the printer of optical-write-in mode and the write head of electronic copier (laser head) etc. with embodiment.
(electronic equipment)
Below, we illustrate the various electronic equipments that carry above-mentioned organic El device.The various electronic equipments that the following describes comprise certain holding circuit in the holding circuit of the electro-optical panel relevant with first embodiment to the, three embodiments.
＜A: mobile model computing machine 〉
One side simultaneously illustrates the example that above-mentioned organic El device is applied to the personal computer of mobile model with reference to Fig. 9.Fig. 9 is the oblique view of the formation of expression computing machine 1200.
In Fig. 9, computing machine 1200 has the main unit 1204 with keyboard 1202 and has the display unit 1206 of the display unit 1005 that constitutes with unillustrated organic El device among the figure.Display unit 1005 reduces the electrostatic breakdown to each element that is caused by the static that takes place in manufacture process, also improved the reliability of whole device.Further, can show high quality images.Again, by form the organic EL of the primaries that sends red, green, blue in a plurality of organic El devices of display unit 1005, this display unit 1005 can show that carrying out image shows with full color.
＜B: portable telephone set 〉
Further, one side simultaneously illustrates the example that above-mentioned organic El device is applied to portable telephone set with reference to Figure 10.Figure 10 is the oblique view of the formation of expression portable telephone set 1300.
In Figure 10, portable telephone set 1300 has a plurality of action buttons 1302 and the display unit 1305 that has as the organic El device of an embodiment of the invention.
Display unit 1305 can show and above-mentioned display unit 1005 same high quality images, and make the reliability height.Because improved the yield rate of the organic EL panel that display unit 1305 has, thus the price of portable telephone set 1300 integral body can be suppressed, and also improved the durability of portable telephone set 1300.Again, by send the primaries of each red, green, blue in a plurality of organic ELs of display unit 1305, this display unit 1305 also can show that carrying out image shows with full color.
Again, the present invention, be not limited to the foregoing description, in the scope of not violating invention main idea that accessory rights claim and instructions all read or thought, can suitably change, again, being accompanied by the method for manufacturing organic EL of this change and organic EL and electronic equipment is also contained in the technical scope of the present invention.

Claims (10)

1. light-emitting device, the transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of on-chip element-forming region in alignment arrangements with first electrode and second electrode,
And described light-emitting device has: many power leads, and it is configured in the neighboring area of the periphery that is arranged in described element-forming region, supplies with the power supply of different potentials; And electric current supplying wire, it connects up to described element-forming region from described neighboring area, is electrically connected through described first electrode of described transistor AND gate in described unit circuit, it is characterized in that,
In described neighboring area, also has the holding circuit that is used for electric current supplying wire; it is made of the diode that is connected between described electric current supplying wire and described many power leads, and described diode is connected according to the mode of the regular event that does not hinder described electric current supplying wire.
2. light-emitting device, the transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of on-chip element-forming region in alignment arrangements with first electrode and second electrode,
And described light-emitting device has: many power leads, and it is configured in the neighboring area of the periphery that is arranged in described element-forming region, supplies with the power supply of different potentials; Electric current supplying wire, it connects up to described element-forming region from described neighboring area, is electrically connected through described first electrode of described transistor AND gate in described unit circuit; And data line, connect up to described element-forming region from described neighboring area, supply with data-signal to described unit circuit, it is characterized in that,
Also have the holding circuit that is used for data line in described neighboring area, it is made of the diode that is connected between described data line and described many power leads, and described diode is connected according to the mode of the regular event that does not hinder described data line.
3. light-emitting device according to claim 1 and 2 is characterized in that,
In described neighboring area, have scan line drive circuit, it supplies with described unit circuit through sweep trace with sweep signal, perhaps has data line drive circuit, and it supplies with described unit circuit through data line with data-signal;
Described scan line drive circuit or data line drive circuit are made of complementary transistor;
Described many power leads are supplied with described scan line drive circuit or data line drive circuit with power supply.
4. light-emitting device according to claim 3 is characterized in that,
In described neighboring area, between described data line and described data line drive circuit, perhaps, between described sweep trace and described scan line drive circuit, resistive element is set.
5. light-emitting device according to claim 1 and 2 is characterized in that,
Further have sweep trace, it connects up to described element-forming region from described neighboring area, supplies with sweep signal to described unit circuit;
In described neighboring area, also have the holding circuit that is used for sweep trace, it is made of the diode that is connected between described sweep trace and described many power leads, and described diode is connected according to the mode of the regular event that does not hinder described sweep trace.
6. light-emitting device according to claim 2 is characterized in that,
The described holding circuit that is used for data line is a plurality of diodes that are connected in series mutually, and described a plurality of diodes are configured in the both sides in the zone of described electric current supplying wire and described data line intersection.
7. light-emitting device according to claim 3 is characterized in that,
The described holding circuit that is used for sweep trace is a plurality of diodes that are connected in series mutually, and described a plurality of diodes are configured in the both sides in the zone that in described many power leads and described sweep trace intersect.
8. light-emitting device according to claim 1 and 2 is characterized in that,
In described neighboring area, described electric current supplying wire comprises:
Main line, it extends setting in the mode of surrounding described element-forming region; With
Many branch lines, it extends setting from described main line in described element-forming region;
Described many branch lines are electrically connected in described element-forming region mutually.
9. light-emitting device, the transistor that comprises light-emitting component and be controlled at the electric current that flows in this light-emitting component in each at a plurality of unit circuits of on-chip element-forming region in alignment arrangements with first electrode and second electrode,
And described light-emitting device has: first electric current supplying wire, and connecting up to described element-forming region in its neighboring area from described element-forming region, is electrically connected through described first electrode of described transistor AND gate; Second electric current supplying wire, it connects up to described element-forming region from described neighboring area, is electrically connected with described second electrode; And data line, it connects up to described element-forming region from described neighboring area, and data-signal is supplied with described unit circuit,
The described a plurality of unit circuits of described second electrode pair are provided with jointly, it is characterized in that,
In described neighboring area; has the holding circuit that is used for data line; by be connected first diode between described data line and described first electric current supplying wire, and second diode that is connected between described data line and described second electric current supplying wire constitute, described first and second diode is connected according to the mode of the regular event that does not hinder described data line respectively.
10. an electronic equipment is characterized in that: comprise according to each described light-emitting device in the claim 1,2,9.
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