CN101488481B - Light-emitting device and electronic apparatus - Google Patents

Light-emitting device and electronic apparatus Download PDF

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Publication number
CN101488481B
CN101488481B CN2009100068253A CN200910006825A CN101488481B CN 101488481 B CN101488481 B CN 101488481B CN 2009100068253 A CN2009100068253 A CN 2009100068253A CN 200910006825 A CN200910006825 A CN 200910006825A CN 101488481 B CN101488481 B CN 101488481B
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China
Prior art keywords
light
wiring
electrode
emitting device
circuit board
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CN2009100068253A
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CN101488481A (en
Inventor
中西早人
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Zhiji Shidun Technology Co ltd
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Seiko Epson Corp
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Priority claimed from JP2003145431A external-priority patent/JP3778176B2/en
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Abstract

The invention provides a light-emitting device and an electronic apparatus, which are capable of preventing reduction of the amount of current flowing through light-emitting elements and which have an excellent display characteristic. Cathode wiring lines connected to a cathode are provided to surround an effective area outside the effective area where a plurality of pixels having light-emitting elements are provided. First to third power source lines connected to pixel electrodes are provided between the cathode wiring lines and the effective area.

Description

Light-emitting device and electronic instrument
The application is an application number: the dividing an application of the patent application of 031386717, the applying date: 2003.5.26, denomination of invention " light-emitting device and electronic instrument ".
Technical field
The present invention relates to light-emitting device and used its electronic instrument.
Background technology
In recent years, between substrate that is formed with pixel capacitors and opposite electrode, have, used organic EL (electroluminescent) display unit of the light-emitting component of luminous organic material, noticeable (for example opening flat 5-3080 communique) with reference to the spy.
In organic EL display, by to the light-emitting component supplying electric current, light-emitting component is luminous.At this moment, the brightness of light-emitting component is determined by the magnitude of current of the electric current of supplying with basically.
As mentioned above, the brightness of light-emitting component by the magnitude of current decision of the electric current of supplying with, so be necessary correct setting, makes the magnitude of current become required value basically.
In addition, if guarantee the sufficient magnitude of current, the width that is used for the wiring of supplying electric current just increases, and the frame zone increases, and brings obstacle when carrying on various electronic instruments sometimes.
Summary of the invention
The present invention proposes in view of the described fact, and its first purpose is, guarantees the sufficient magnitude of current, perhaps suppresses the change of the brightness of the light-emitting component that the change of supply voltage causes.It is a kind of that another purpose is to provide, and provides and satisfy described requirement, and narrow frame is changed into be possible light-emitting device and electronic instrument.
Light-emitting device one of of the present invention is characterised in that, comprise: the viewing area, this viewing area is arranged on the circuit board, constitute by forming a plurality of pixel areas, this pixel area has: comprise light-emitting component that is clipped in the luminescent layer between first electrode and second electrode and the switch element that is used to drive this light-emitting component; Electrode is connected with described second electrode with the outside that is routed in described viewing area with wiring, this electrode; Cover the containment member of described second electrode, wherein, described electrode extends along the one side at least in many limits of the periphery that forms described viewing area and described circuit board with wiring, and this electrode is overlapping with the junction surface that described circuit board and described containment member engage with at least a portion of wiring.Because described electrode uses wiring to extend along the one side at least in many limits of the periphery that forms described circuit board, guarantee described second electrode and the described electrode sufficient contact area of wiring so can get.And,, narrow frame is changed into is possible by effectively utilizing the space at described junction surface.
The present invention's two light-emitting device is characterised in that, comprising: be arranged in the viewing area on the circuit board, and comprise a plurality of pixels with the light-emitting component that is clipped in the luminescent layer between first electrode and second electrode; The outside in described viewing area, the electrode that is connected with described second electrode is with connecting up; Described electrode is arranged on than the periphery of described second electrode with wiring and more leans on described viewing area one side.
In described light-emitting device, guaranteed described second electrode and described electrode sufficient contact area, and can realize narrow frameization with wiring.
The present invention's three light-emitting device is characterised in that, comprising: be arranged in the viewing area on the circuit board, and comprise a plurality of pixels with the light-emitting component that is clipped in the luminescent layer between first electrode and second electrode; The outside in described viewing area, the electrode that is connected with described second electrode is with connecting up; Be arranged on the outside of described viewing area, be used for supplying with the circuit of the signal of telecommunication to described a plurality of pixels; Described second electrode forms and covers described viewing area and described circuit.
According to this structure, prevented that light-emitting component, circuit are exposed in the extraneous air, can prevent them because the water in the extraneous air and oxygen and deterioration.In addition, block light, can avoid light to leak the problems such as malfunction of the circuit that causes from described second electrode, one side.In addition, can remove by described second electrode because for example static etc. and the electric charge that injects from the outside.
The present invention's four light-emitting device is characterised in that, comprising: be arranged in the viewing area on the circuit board, and comprise a plurality of pixels with the light-emitting component that is clipped in the luminescent layer between first electrode and second electrode; The outside in described viewing area, the electrode that is connected with described second electrode is with connecting up; By being arranged on the viewing area power line on the described viewing area, the power line that is connected in the outside of described viewing area with described first electrode; Described power line is arranged on than the position of described electrode with the more close described viewing area of wiring.
According to this structure, because can reduce described electrode cross part, so can reduce the risk that breaks etc. with wiring and described power line.
It should be noted that " viewing area power line " particularly, and be for example corresponding with power line 103 with the demonstration of describing later.
The present invention's five light-emitting device is characterised in that, comprising: be arranged in the viewing area on the circuit board, and comprise a plurality of pixels with the light-emitting component that is clipped in the luminescent layer between first electrode and second electrode; The outside in described viewing area, the electrode that is connected with described second electrode is with connecting up; By being arranged on the viewing area power line on the described viewing area, the power line that is connected in the outside of described viewing area with described first electrode; Described second electrode has covered described power line and described electrode at least a portion that connects up.
Because second electrode and described power line and described electrode are overlapping with at least a portion of wiring, so second electrode and described power line or described electrode can form electric capacity with wiring.In view of the above, even described power line or described electrode during with the variation in voltage of wiring, have relaxed this change by this electric capacity, can suppress the luminance fluctuation of the light-emitting component that causes with the variation in voltage that connects up by described power line or described electrode.
The present invention's six light-emitting device is characterised in that, comprising: be arranged in the viewing area on the circuit board, and comprise a plurality of pixels with the light-emitting component that is clipped in the luminescent layer between first electrode and second electrode; The outside in described viewing area, the electrode that is connected with described second electrode is with connecting up; By being arranged on the viewing area power line on the described viewing area, the power line that is connected in the outside of described viewing area with described first electrode; Described power line is formed by a plurality of wiring layers that separate by interlayer dielectric and the described a plurality of wiring layers of electrical connection electric conducting material each other.
In view of the above, can reduce the problems such as broken string of described power line.
In described light-emitting device, it is desirable to, also comprise the containment member that covers described second electrode, the junction surface of described containment member on described circuit board engages, and described electrode is overlapping with at least a portion and the described junction surface of wiring.By effectively utilizing the space at described junction surface, narrow frame is changed into be possible.
In described light-emitting device, described circuit board has rectangular shape, and described electrode is with between 3 limits and described viewing area in 4 limits that are configured in the periphery that forms described circuit board of connecting up.
Because described electrode with wiring be arranged on described viewing area around, so can guarantee the sufficient zone that is electrically connected with described second electrode.
Because can make described a plurality of pixel and described electrode fully little, wait the voltage that causes to descend so can suppress centering on of wiring with the wiring distance of wiring.
In described light-emitting device, it is desirable to, in described viewing area, be provided with and be used for supplying with the scan line of sweep signals and being used to supply with the data wire of data-signal to described a plurality of pixels, and described electrode with connecting up be by with described scan line and data wire in any one identical materials constitute.Perhaps, the most handy same step formation electrode any one in wiring and described scan line and the described data wire.
In described light-emitting device, described electrode is preferably formed by a plurality of wiring layers that separate by interlayer dielectric and the described a plurality of wiring layers of electrical connection electric conducting material each other with wiring.
In described light-emitting device, it is desirable to, also comprise the containment member that covers described second electrode, the junction surface of described containment member on described circuit board engages, and at least a portion of described power line and described junction surface are overlapping.
In described light-emitting device, can be, described first electrode is a pixel capacitors, and described second electrode is arranged on the public electrode of the top of described pixel capacitors.
In described light-emitting device, also can be, described first electrode is an anode, and described second electrode is a negative electrode.
In described light-emitting device, it is desirable to, described electrode is with in the wiring, and the area shared with the junction surface of described second electrode is described electrode more than 50% of area of wiring.
Electronic instrument of the present invention is characterized in that having described light-emitting device.
This electronic instrument is because have above-mentioned light-emitting device, so become the electronic instrument with excellent display characteristic.
Description of drawings
Following brief description accompanying drawing.
Fig. 1 is the plane model figure of an embodiment of expression light-emitting device of the present invention.
Fig. 2 is the ideograph of analysing and observe along the AB line of light-emitting device shown in Figure 1.
Fig. 3 is the figure of the major part of expression light-emitting device shown in Figure 1.
Fig. 4 is the plane model figure of the Wiring structure of light-emitting device shown in Figure 1.
Fig. 5 is the plane model figure of the configuration of expression luminescent layer, (a) is the figure of expression striped configuration, (b) is that the figure of configuration is inlayed in expression, (c) is the figure of expression triangle configuration.
Fig. 6 is the stereogram that the electronic instrument example of light-emitting device of the present invention is used in expression.
Among the figure: the 1-light-emitting device; The 2a-viewing area; The 3-sealing; The 4-circuit board; The 10-electro-optic layer; The 11-light-emitting component; The 12-negative electrode; The 12c-periphery; 13-negative electrode wiring (electrode is with connecting up); The 110-light-emitting component; The 110b-luminescent layer; The 111-pixel capacitors; 600-mobile phone main body (electronic instrument); 700-information processor (electronic instrument); 800-shows main body (electronic instrument).
Embodiment
Below, an embodiment of light-emitting device of the present invention is described.
As shown in Figure 4, the structure of the light-emitting device 1 of present embodiment is: respectively wiring multi-strip scanning line 101 is arranged, many data wires 102 that extend to the direction of intersecting with scan line 101, many demonstrations power lines 103 that extend side by side with data wire 102.
Cross part at scan line 101 and data wire 102 is provided with pixel area A.
On data wire 102, be connected with have shift register, data one side drive circuit 104 of level shifter, video line and analog switch.On scan line 101, be connected with have shift register, the scanning of level shifter one side drive circuit 105.
When on pixel area A, the switch that sweep signal is offered grid by scan line 101 is preserved the driving that offers grid from the maintenance electric capacity cap of the total pixel signal of data wire 102, the pixel signal that keeps by this maintenances electric capacity cap with thin-film transistor 123, when being connected electrically in demonstration and using on the power line 103 with thin-film transistor 123 by this driving with thin-film transistor 122 with thin-film transistor 122, by this switch, supply with drive current from showing with power line 103, light-emitting component 110 is luminous.
If provide to light-emitting device 1 by scan line 101 to make switch be the sweep signal of conducting state with thin-film transistor 122, light-emitting device 1 just is driven, and switch becomes conducting state with thin-film transistor 122.At this moment, from data wire 102, data-signal is supplied with thin-film transistor 122 by switch, remains on to keep among the electric capacity cap.According to remaining on the quantity of electric charge that keeps among the electric capacity cap, set the conducting state that drives with thin-film transistor 123.
If by driving with thin-film transistor 123, supplied with drive current by pixel capacitors 111 to light-emitting component 110 with power line 103 from showing, light-emitting component 110 is just with luminous with the corresponding brightness of the magnitude of current of the drive current of supplying with.
As shown in Figure 1, corresponding with the viewing area 2a of light-emitting device 1, be provided with the pixel R, the pixel G of expression green emitting, the pixel B of expression blue-light-emitting that represent emitting red light.Corresponding with pixel R, pixel G, pixel B, be provided with above-mentioned scan line 101 (not shown), data wire 102 (not shown) and show with power line 103 (not shown).Though not shown, show with power line 103 to be connected at the outside and first~the 3rd power line 103G, 103B, the 103R of viewing area 2a.
The first power line 103G is configured between the 2 limit 4a and 4c and viewing area 2a in 4 limits of the periphery that forms circuit board 4, forms L word shape.The 103G1 of first of the first power line 103G is arranged between one side 4a and viewing area 2a relative with one side 4d that flexible substrate 5 is installed, and more specifically, is arranged between check circuit 106 and one side 4a.The 103G1 of first of first power line 103 2 relative limits from 4 limits of the periphery of formation circuit board 4 are that 4c extends to the 4b direction.At the 103G1 of this first, link to each other with power line 103 with the demonstration that is provided with for pixel G.
The second portion 103G2 of the first power line 103G, one side 4d from the side that flexible substrate 5 is installed of circuit board 4, extend to one side 4a direction relative with one side 4d, the 103G1 of first links to each other with second portion 103G2, makes the first power line 103G become crooked shape.
The second source line 103B and the first power line 103G have the shape of L word shape equally.Second source line 103B is arranged between 2 limits (4a and 4c) and the first power line 103G in 4 limits of the periphery that forms circuit board 4.At the 103B1 of first at the 103G1 of first of the first power line 103G and the second source line 103B between the 4a of limit, second source line 103B links to each other with power line 103 with the demonstration that is provided with for pixel B.
Also 103B is same with the above-mentioned first power line 103G, second source line for the 3rd power line 103R, has the shape of L word shape.The 103R1 of first of the 3rd power line 103R is arranged on the 103B1 of first of second source line 103B and forms between the limit 4a relative with the limit 4d of the side that flexible substrate has been installed in four limits of periphery of circuit board 4, at the 103R1 of first of the 3rd power line 103R, link to each other with power line 103 with the demonstration that is provided with for pixel R.
The second portion 103R2 of the 3rd power line 103R is formed between limit one side 4b and viewing area 2a that promptly 4c is relative on one side with the side of second portion 103G2 that is formed with described first power line 103G and second source line 103B and 103B2.
Be installed in the flexible substrate 5 on one side 4d of circuit board 4, have thereon to drive and use IC6.
Between viewing area 2a and described one side 4a, be provided with check circuit 106.By check circuit 106, the quality of the light-emitting device in the time of carrying out manufacture process and dispatch from the factory, the inspection of defective.
2 scan line drive circuits 105 are separately positioned between the second portion 103R2 of viewing area 2a and the 3rd power line 103R, between the second portion 103G2 of viewing area 2a and the first power line 103G.
Transmission is used for the drive circuit of signal of gated sweep line drive circuit 105 with control signal wiring 105a and drive circuit power-supply wiring 105b, is separately positioned between the second portion 103G2 of the second portion 103R2 of scan line drive circuit 105 and the 3rd power line 103R and the first power line 103G.
Connected the negative electrode wiring 13 (opposite electrode is used with wiring or public electrode and connected up) of negative electrode 12, be arranged on the 3rd power line 103R and second source line 103B and form between 3 limit 4a in 4 limits of periphery of circuit board 4,4b, the 4c, have the コ word shape in appearance.
Negative electrode is arranged between the 103R1 of first of limit 4a relative with one side 4d that flexible substrate 5 is installed of circuit board 4 and the 3rd power line 103R with the 13a of first of wiring 13, forms along one side 4a and extends.Negative electrode disposes along described 4a and 4d 2 limit 4b and 4c in addition respectively with the second portion 13b and the third part 13c of wiring 13.
Negative electrode is with wiring 13, it is desirable to be arranged on than the periphery 12c of negative electrode 12 (central authorities' one side of circuit board 4) more in the inner part.
Be the periphery 13e (left border of the upper limb of first 13a, second portion 13b, the right border of third part 13c) of negative electrode, it is desirable to be formed on the periphery 12c that is positioned at than negative electrode 12 and more depend on viewing area 2a with wiring 13.
Negative electrode is suitably for 1mm above (being preferably more than the 2mm) with the distance of the periphery 12c of wiring 13 periphery 13e and negative electrode 12.
By adopting such structure, even when skew having taken place, also can guarantee negative electrode 12 and negative electrode contact area with wiring 13 in the formation position of negative electrode 12, negative electrode 12 and negative electrode are become below the required resistance with the resistance of 13 the connecting portion of connecting up.
If the current density of negative electrode 12 becomes inhomogeneous, will cause to show the inhomogeneous decline that waits display quality, so in order to ensure sufficient electric current supply amount, it is wide as far as possible with the width of wiring 13 to it is desirable to negative electrode.For example preferably be set at more than the width of the power line that has Breadth Maximum among first~the 3rd power line 103G, 103B, the 103R.If be more than the total width of first~the 3rd power line 103G, 103B, 103R, just more can reduce the uneven problem of described demonstration.
Negative electrode connects up 105a, drive circuit with power-supply wiring 105b, first~three power line 103G, 103B, 103R with drive circuit with control signal with wiring 13, by connecting wiring 5a, is connecting the driving IC6 (drive circuit) on the flexible substrate 5.
Fig. 2 is the figure in the cross section of expression light-emitting device 1.Light-emitting device is made of circuit board 4 and the electro-optic layer 10 that is configured on the circuit board 4.
Electro-optic layer 10 is provided with light-emitting component 110 in the part relative with the viewing area 2a of electro-optic layer 10.Light-emitting component 110 has 2 functional layers, promptly as shown in Figure 3, has luminescent layer 110a and hole injection/transfer layer 110b.
Luminescent layer 110b is, mainly bear from the hole of hole injection/transfer layer 110a input with from the negative electrode 12 injected electrons functional layer of the luminescence phenomenon of combination again, in the present embodiment, according to pixel R, the pixel G of expression green emitting, the pixel B of expression blue-light-emitting of the expression emitting red light shown in the plane graph of light-emitting device shown in Figure 1, dispose the luminescent layer 110b of red, green, the blue glow color of expression respectively.
As the material of luminescent layer 110b, can use luminous organic material, for example three (oxine) aluminium complex (Alq) etc.
Hole injection/transfer layer 110a is used to improve element characteristics such as the luminous efficiency of luminescent layer 110b and life-span, has the function of the hole being injected luminescent layer 110b, and has the function of hole in hole injection/transfer layer 110a delivered inside.
As the material of hole injection/transfer layer 110a, for example can use the mixture of the polythiofuran derivative of polyethylene dioxythiophene etc. and polystyrolsulfon acid etc.
Luminescent layer 110b and hole injection/transfer layer 110a are configured in pixel capacitors 111 and are arranged between the negative electrode 12 of top of pixel capacitors 111.
Pixel capacitors 111 is for example formed by ITO, carries out composition, has formed nearly rectangle in vertical view.The thickness of this pixel capacitors 111 it is desirable to the scope of 50~200nm, it is desirable to about 150nm especially.
As shown in Figure 2, formed negative electrode 12, made it cover whole of the light-emitting component 11 that is positioned at viewing area 2a at least.Nominal region 2d is to use ink-jetting process to form before the light-emitting component 110, for the zone of the spray volume stabilisation that makes the material that forms light-emitting component, can be described as and is used to try the zone beaten.
Negative electrode 12 can have monolayer constructions will, has multi-ply construction but also can resemble the light-emitting device of present embodiment.The structure of ground floor 12a that for example can adopt stacked to constitute by calcium etc. and the second layer 12b that constitutes by aluminium etc.
Can to ground floor 12a and second layer 12b any one pays optical function at least.For example, as mentioned above,, can reflect the light that light-emitting component 110 sends efficiently by constituting second layer 12b with aluminium.In view of the above, the taking-up efficient from the light of matrix 2 one sides improves.
And when from negative electrode 12 1 side-draw bright dippings,, preferably carry out filming in order to ensure the sufficient optical transmission of negative electrode 12.At this moment, as the material of negative electrode 12, suitable use contains the alloy, Pt, Ir, element such as Ni, Pd of silver, magnesium, silver and magnesium and by metal of filming etc.
Can use mechanical mask etc., form negative electrode 12 with vapour deposition method, sputtering method, CVD method etc.
On negative electrode 12, can be provided with suppress water and oxygen etc. become negative electrode 12, luminescent layer 110b or hole injection/transfer layer 110a etc. deterioration factor material intrusion and see through, by SiO, SiO 2, the protective layer that constitutes such as SiN.
Luminescent layer 110b and hole injection/transfer layer 110a, luminescent layer 110a and the hole injection/transfer layer 110b with adjacent light-emitting component 110 separates by partition board portion 112.As shown in Figure 3, partition board portion 112 is made of multilayer, is laminated with inorganic matter carrier ring 112a (first carrier ring) and is positioned at the organic substance carrier ring 112b (second partition layer) of negative electrode 12 1 sides in active element layer 14 1 side.
The part of the part of inorganic matter carrier ring 112a and organic substance carrier ring 112b forms, and is overlapping with the periphery of pixel capacitors 111.
Inorganic matter carrier ring 112a is formed on, and more leans on central authorities' one side of pixel capacitors 111 than organic substance carrier ring 112b.
Inorganic matter carrier ring 112a it is desirable to by SiO 2, TiO 2Constitute etc. inorganic material.The thickness of this inorganic matter carrier ring 112a it is desirable to the scope of 50~200nm, it is desirable to about 150nm especially.
Organic substance carrier ring 112b, by material with thermal endurance, solvent resistance, formation such as acrylic resin, polyimide resin for example.The thickness of this organic substance carrier ring 112b it is desirable to the scope of 0.1~3.5 μ m, wishes it is about 2 μ m especially.
Above electro-optic layer 10, be provided with and be used for suppressing or cut off the material that the water of extraneous air or oxygen etc. become the deterioration essential factor of negative electrode 12 or light-emitting component 110, the seal substrate 34 that enters electro-optic layer 10 inside.As the material of seal substrate 34, for example use glass, quartz, metal, synthetic resin etc.When the light time that goes out light-emitting component 110 from negative electrode 12 1 side-draws,, preferably use materials such as glass, quartz or synthetic resin with sufficient optical transmission as the material of seal substrate 34.
Electro-optic layer 10 1 sides in seal substrate 34 are provided with the recess 34a that holds electro-optic layer 10.Be preferably among the recess 34a getter 35 that configuration absorbs oxygen etc.
Seal substrate 34 engages with circuit board 4 by sealing resin 33.The material require that uses in the sealing resin 33 engages seal substrate 34 and circuit board 4, but on this basis, preferably and seal substrate 34 same, be to suppress or cut off the material that water in the extraneous air and oxygen etc. become the deterioration essential factor of negative electrode 12 or light-emitting component 110, enter the material of electro-optic layer 10 inside.
Material as using in the sealing resin 33 for example has heat reactive resin, ultraviolet curable resin etc.Particularly being fit to use a kind of of heat reactive resin is epoxy resin.
Sealing resin 33 is in order to keep sufficient sealing, preferably the periphery 12c of negative electrode 12 is collected in the inboard of sealing resin 33, but for narrow frameization, as shown in Figure 2, preferably the periphery 12c of the part of sealing resin 33 and negative electrode 12 is overlapping, and negative electrode 12 does not extend to outside the sealing resin 33.Be the periphery 33a that best negative electrode 12 does not reach sealing resin.
Circuit board 4 has active element layer 14, is provided with negative electrode with connecting up 13 in active element layer 14, first~the 3rd power line 103R, 103G, 103B, drive circuit is with the control signal 105a that connects up, drive circuit power-supply wiring 105b, data wire 102 (not shown) with 2a corresponding setting in viewing area shown in Figure 1, scan line 101 (not shown), show with power line 103 (not shown), drive with thin-film transistor 123, switch thin-film transistor 122 (not shown), at viewing area 2a with form the thin-film transistor 124 that comprises in the scan line drive circuit 105 that is provided with between the limit of periphery of circuit board 4, the thin-film transistor (not shown) of check circuit 106 usefulness.
As shown in Figure 2, negative electrode with the thin-film transistor 124 that comprises in wiring 13, first~the 3rd power line 103R, 103G, 103B, the scan line drive circuit, drive circuit with control signal connect up 105a, drive circuit with power-supply wiring 105b, with data wire 102 (not shown), the scan line 101 (not shown) of 2a corresponding settings in viewing area shown in Figure 1, show with power line 103 (not shown), drive and use thin-film transistor 123 and switch thin-film transistor 122, be by negative electrode 12 coverings.It should be noted that though not expression among Fig. 2, preferably, the transistor that comprises in the check circuit 106 is also covered by negative electrode 12.
A plurality of conductive layers (wiring layer) that utilization is separated by the first interlayer dielectric 144a have constituted negative electrode with connecting up 13.Be that negative electrode is to be made of described a plurality of conductive layers and the electric conducting material that is electrically connected these a plurality of conductive layers with wiring 13.Negative electrode is set to wiring 13, with the location overlap that engages seal substrate 34 and circuit board 4.Promptly below sealing resin, be provided with negative electrode with connecting up 13.
As the material of described conductive layer, can and form at least a formation in the material of data wire 102 by the material that forms scan line 101.
As concrete material, can enumerate A1, Mo, Ta, Ti, W, Cu, TiN and their alloy.
A plurality of conductive layers that utilization is separated by the first interlayer dielectric 144a have constituted first~the 3rd power line 103G, 103B, 103R.Promptly first~the 3rd power line 103G, 103B, 103R are made of described a plurality of conductive layers and the electric conducting material that is electrically connected these a plurality of conductive layers.
Any one at least a portion at least in first~the 3rd power line is set to, with the location overlap that engages seal substrate 34 and circuit board 4.
As the material of described conductive layer, can form by material that forms scan line 101 and at least a material that forms in the material of data wire 102.As concrete material, can enumerate Al, Mo, Ta, Ti, W, Cu, TiN and their alloy.
Drive circuit is arranged on the first interlayer dielectric 144a with power-supply wiring 105b with control signal wiring 105a and drive circuit, with data wire 102 and demonstration with in the power line 103 any one is formed on same one deck at least, or in same step, form.
As the material of drive circuit, can adopt the same material of material with first~the 3rd above-mentioned power line with control signal wiring 105a and drive circuit usefulness power-supply wiring 105b.
Scan line 101, data wire 102 and showing with power line 103 is arranged on the interior or first interlayer dielectric 144a of the first interlayer dielectric 144a.
Drive and to have semiconductor film 141 with thin-film transistor 123, semiconductor film 141 is provided with drain region 141a, source region 141b, the channel region 141c that the injection by high concentration boron ion forms.
Semiconductor film 141 is formed on the bottom protective film 2c.Bottom protective film 2c has inhibition becomes the material of thin-film transistor deterioration factor from mobile ion, oxygen and the water etc. of matrix 2 the function that sees through.
On semiconductor film 141, be formed with the gate insulating film 142 that covers semiconductor film 141.Be formed with the grid 143 that is made of Al, Mo, Ta, Ti, W etc. on gate insulating film 142, the part of grid 143 and gate insulating film 142 is covered by the first interlayer dielectric 144a.
As shown in Figure 3, the leakage of semiconductor film 141, source region 141a, 141b be connected pixel capacitors 111 and show being formed with on the first and second interlayer dielectric 144a, the 144b to be respectively applied for the contact hole 145,146 on the power line 103.
By being formed on the contact hole 145 on the second interlayer dielectric 144b, drain region 141a links to each other with pixel capacitors 111 on being arranged on the second interlayer dielectric 144b.By being formed on the contact hole 146 on the first interlayer dielectric 144a, source region 141b is electrically connected and shows with power line 103.
In the light-emitting device 1 of present embodiment, can obtain effect shown below.
(1) negative electrode with wiring 13 first~third part 13a, 13b, 13c form about or above-below direction extend, so can fully guarantee the contact area of negative electrode, can be suppressed at Min. to negative electrode with the resistance (contact resistance) between wiring 13 and the negative electrode 12 with wiring 13 and negative electrode 12.
Therefore, can prevent, offer the phenomenon that the magnitude of current of the electric current of light-emitting component 110 descends because the voltage that causes of this resistance descends.
Therefore, prevented light-emitting component 110 brightness, show inhomogeneous or contrast under degradation, can obtain excellent display characteristic.
(2) negative electrode forms and almost surrounds viewing area 2a with wiring 13, i.e. the top of viewing area 2a, left and right-hand, so in the light-emitting component 110 at an arbitrary position, can both fully shorten and negative electrode with the distance of wiring 13.
For example, the light-emitting component 110 on the top that is arranged in viewing area 2a is through the 13a of current direction first of this light-emitting component 110, the light-emitting component 110 in the bottom that is arranged in viewing area 2a, current direction second or third part 13b, 13c.
Energy reduces the skew based on the magnitude of current of the electric current of the supply of the position of light-emitting component 110.Therefore, can make the brightness homogenization of viewing area 2a.
(3) negative electrode is arranged on than the periphery 12c of negative electrode 12 (central authorities' one side of substrate) more in the inner part with wiring 13, so when skew has taken place in the formation position of negative electrode 12 a little (for example the formation position of negative electrode 12 up and down or left and right directions when skew), also can covered cathode with wiring 13 and form negative electrode 12.
Therefore, can fully guarantee negative electrode 12 and negative electrode contact area with wiring 13.Therefore, prevented that negative electrode 12 and negative electrode from increasing with the resistance between the wiring 13, can prevent the decline of luminosity.
(4) connect up 105a, drive circuit power-supply wiring 105b, check circuit 106, first~the 3rd power line 103G, 103B, 103R and negative electrode with wiring 13 because formed viewing area 2a, scanning one side drive circuit 105, drive circuit with control signal, be exposed in the extraneous air so can prevent them by negative electrode 12 coverings.Therefore, the life expectancy of light-emitting device is increased.
In addition, reason negative electrode 12 covers the regional 2a of expression, scanning one side drive circuit 105, check circuit 106, so can prevent the misoperation that caused by the photoconduction that is included in the thin-film transistor in the foregoing circuit.
In addition, guaranteed the endurance of device to static etc.Can be fast remove the electric charge that injects by static etc. by negative electrode 12.
(5) negative electrode is configured in than first~the 3rd power line 103G, 103B, 103R more by outer Monday of the side of circuit board 4 with wiring 13, forms covering first~the 3rd power line 103G, 103B, 103R with wiring 13 negative electrodes that are connected 12 with negative electrode.
Therefore, between negative electrode 12 and first~the 3rd power line 103G, 103B, 103R, can form electric capacity,, also can relax this change by this electric capacity even the voltage of first~the 3rd power line 103G, 103B, 103R changes from set-point.
In the light-emitting device 1 of Fig. 1~shown in Figure 4, negative electrode forms the コ word shape that is made of first~third part 13a, 13b, 13c with wiring 13, but in the present invention, negative electrode is not limited thereto with the shape that connects up.
In the present invention, negative electrode can be the shape that at least a portion is extended to assigned direction with wiring.For example can adopt any one the structure that has among first~third part 13a, 13b, the 13c.In addition, also can adopt 2 the structure that has among first~third part 13a, 13b, the 13c.
In addition, negative electrode also can be formed on wiring, on first~third part 13a, 13b shown in Figure 1, the basis of 13c, in the bottom of circuit board 4, also has along the tetrameric rectangle of following 4d direction extension to the left and right.
In addition, negative electrode is not limited to linearity with wiring.For example at least a portion can form the extension of curve-like ground.
In the above-described embodiment, pixel capacitors 111 is illustrated as anode, but opposite, pixel capacitors 111 as negative electrode, as anode, is not departed from the scope of the present invention negative electrode 12 certainly yet.
In the light-emitting device 1 of Fig. 1~shown in Figure 4, the situation of the light-emitting component 110 of pixel R, pixel G, pixel B being carried out the striped configuration has been described, but the present invention is not limited thereto, can adopt various arrangements.For example, also can adopt the triangle configuration shown in configuration, Fig. 5 (c) of inlaying shown in Fig. 5 (b) except the configuration of the striped shown in Fig. 5 (a).
Below, the concrete example of the electronic instrument with light-emitting device 1 is described.
Fig. 6 (a) is the stereogram of an example of expression mobile phone.In this figure, symbol 600 expression mobile phone main bodys, the display part of described light-emitting device has been used in symbol 601 expressions.
Fig. 6 (b) is a stereogram of representing an example of portable information processing devices such as PC.In the figure, symbol 700 expression information processors, input parts such as symbol 701 expression keyboards, symbol 703 expression information processor main bodys, the display part of described light-emitting device has been used in symbol 702 expressions.
Fig. 6 (c) is the stereogram of an example of expression Wristwatch-type electronic instrument.In the figure, symbol 800 expression table main bodys, the display part of described light-emitting device has been used in symbol 801 expressions.
Because these electronic instruments have the display part that has used described light-emitting device, so have excellent display characteristic.

Claims (7)

1. a light-emitting device is characterized in that, comprising:
Circuit board;
Pixel capacitors;
Opposite electrode;
Light-emitting component, it has the luminescent layer that is configured between described pixel capacitors and the described opposite electrode;
Flexible substrate, it is installed in one side of described circuit board, and possesses drive circuit; And
Seal substrate, it engages with described circuit board,
Described circuit board possesses the active element layer, and described active element layer is configured between described circuit board and the described pixel capacitors, and is formed with transistor that is connected with described pixel capacitors and the opposite electrode that is connected with described opposite electrode usefulness wiring,
Described opposite electrode has the part of extending along the limit arbitrarily of the described circuit board different with one side of the described circuit board that described flexible substrate is installed with wiring,
Described opposite electrode has the part with the location overlap that engages described circuit board and described seal substrate with connecting up,
Described opposite electrode is connected with described drive circuit via connecting wiring with wiring.
2. light-emitting device as claimed in claim 1 is characterized in that, described opposite electrode is compared with the periphery of described opposite electrode with wiring and is arranged on the inboard.
3. light-emitting device as claimed in claim 1 or 2 is characterized in that, described seal substrate and described circuit board pass through resin-bonded.
4. light-emitting device as claimed in claim 3 is characterized in that, the part of described resin and the periphery of described opposite electrode are overlapping, and described opposite electrode does not arrive the periphery of described resin.
5. light-emitting device as claimed in claim 1 or 2 is characterized in that described pixel capacitors is an anode, and described opposite electrode is a negative electrode.
6. light-emitting device as claimed in claim 1 or 2 is characterized in that described luminescent layer comprises luminous organic material.
7. electronic instrument, it possesses claim 1 or 2 described light-emitting devices.
CN2009100068253A 2002-05-28 2003-05-26 Light-emitting device and electronic apparatus Expired - Lifetime CN101488481B (en)

Applications Claiming Priority (15)

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JP2002154612 2002-05-28
JP2002154610 2002-05-28
JP2002154611 2002-05-28
JP2002154610 2002-05-28
JP2002-154610 2002-05-28
JP2002154612 2002-05-28
JP2002154609 2002-05-28
JP2002-154612 2002-05-28
JP2002154611 2002-05-28
JP2002154609 2002-05-28
JP2002-154609 2002-05-28
JP2002-154611 2002-05-28
JP2003-145431 2003-05-22
JP2003145431A JP3778176B2 (en) 2002-05-28 2003-05-22 LIGHT EMITTING DEVICE AND ELECTRONIC DEVICE
JP2003145431 2003-05-22

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Publication number Priority date Publication date Assignee Title
CN1242924A (en) * 1997-08-29 2000-01-26 精工爱普生株式会社 Active matrix display

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Publication number Priority date Publication date Assignee Title
CN1242924A (en) * 1997-08-29 2000-01-26 精工爱普生株式会社 Active matrix display

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Title
JP特开2001-102169A 2001.04.13

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