CN1967781A - Pattern forming method, device, active matrix type substrate manufacture method - Google Patents

Abstract

In a method of forming an image pattern, a predetermined pattern by disposing a functional liquid is formed on a substrate, comprising: forming banks on the substrate so that a first region having a width greater than a diameter of in-flight functional liquid and a second region having a width narrower than the width of the first region are delimited; discharging a solvent constituting the functional liquid on the second region and on the first region.

Description

The manufacture method of pattern formation method, device and active matrix type substrate

The application is that application number is " 200410047687.0 ", and denomination of invention is " pattern formation method, device and manufacture method, electro-optical device and an electronic instrument ", and the applying date is the dividing an application of application on May 26th, 2004.

Technical field

The present invention relates to pattern formation method, device and device making method, electro-optical device and electronic instrument.

The application advocates priority 2004-124211 number to Japanese patent application 2003-151284 number that proposed on May 28th, 2003 and the Japanese patent application that proposed on April 20th, 2004, with its content quotation here.

Background technology

Formation method as used Wiring patterns such as electronic circuit and integrated circuit etc. for example can adopt photoetching process.This photoetching process needs main equipment and complicated technologies such as vacuum plant, and the service efficiency of material is a few percent only also, and it is almost discarded with it to have to, the manufacturing cost height.

At this problem, for example, as the spy open on flat 11-274671 communique and the Te Kai 2000-216330 communique disclosed, proposed to adopt by the drop ejection method of droplet discharging head with droplet-like ejection fluent material, promptly adopt so-called ink-jet method on substrate, to form method of patterning.This method is that pattern directly is configured to pattern with fluent material (functional liquid) on substrate, heat-treats then or laser radiation makes it to be transformed into pattern.According to this method, have the photoetching of need not, operation is simplified significantly, the advantage that while raw material consumption also reduces.

In recent years, the circuit that constitutes device advances densification gradually, for example requires further miniaturization of Wiring pattern and graph thinning.But adopt the pattern formation method of above-mentioned drop ejection method, owing to after the impact of ejection drop, on substrate, expand, so be difficult to stably form fine pattern.

Particularly pattern is made under the situation of conducting film, because the expansion of above-mentioned drop will produce liquid storage (projection), this is the reason that broken string and unfavorable condition such as open circuit produce.

And the somebody proposes a kind of formation and has the formation technology of the distribution of narrower width than the diameter that circles in the air of the functional liquid of drop ejection method ejection.In this technology, by the differentiation distribution is formed under the state of the regional surperficial lyophobyization in cofferdam (bank), form zone ejection functional liquid to distribution, though part of functions liquid be ejected into the cofferdam above, repertoire liquid is flowed in the formation zone of distribution.

Yet, according to confirming in recent years, a kind ofly form part of functions liquid in case contact with the top of cofferdam, will be on the cofferdam residual trickle residue.For example, have under the situation of conductivity residue also can become and have conductivity when functional liquid, in case residual above-mentioned residue is just worried the characteristic of distribution itself and used the device property of this distribution to change.

Summary of the invention

The present invention considers that just the problems referred to above propose, and its purpose is to provide a kind of pattern formation method, device and manufacture method thereof, electro-optical device and electronic instrument that can stably form fine interconnection pattern with high accuracy.

First kind of pattern formation method of the present invention, configuration feature liquid on substrate and form decide pattern, wherein have on described substrate the operation that forms the cofferdam; With employing drop ejection method, the operation of the described functional liquid of configuration in the zone of being distinguished by described cofferdam; The zone of being distinguished by described cofferdam comprises that first area and width form the second area narrower than described first area.

In the manner,, for example pass through this functional liquid drying by configuration feature liquid in the zone of being distinguished by the cofferdam, can on substrate, form decide pattern.In this case, because pattern form determined by the shape in cofferdam, so pass through narrowed width between adjacent cofferdam etc., form the cofferdam aptly, can make increasing fineness of pattern or graph thinning.

And in the manner, be formed width segments ground by the zone of being distinguished by the cofferdam and widen, so, overflow functional liquid from the cofferdam in the time of can preventing the functional liquid configuration with this by avoiding part of functions liquid on the part that forms in this width widen.Therefore can accurately form pattern with required shape.

Therefore pattern formation method of the present invention can stably form thin-line-shaped pattern with high accuracy.

In above-mentioned pattern formation method, the described first area in the zone of distinguishing by described cofferdam be described second area width 110～500%.

In the zone of being distinguished by the cofferdam, be 110～500% of another part width by making a part of width, the functional liquid in the time of can preventing configuration feature liquid really overflows from the cofferdam.

And in above-mentioned pattern formation method, the zone of being distinguished by the cofferdam also can be formed with width segments ground and widen in the part of intersecting with other patterns.

According to this pattern formation method, effectively utilize the space of substrate easily.

And in above-mentioned pattern formation method, the zone of being distinguished by the cofferdam also can form width segments ground and narrow down in the part of intersecting with other patterns.

According to this pattern formation method, can not put aside electric capacity in the part that pattern intersects, improve Devices Characteristics easily.

In addition, in above-mentioned pattern formation method, also can adopt drop ejection method that described functional liquid is configured in the described zone.

According to this pattern formation method, adopt drop ejection method to compare with other coating processes such as adopting spin-coating method, fluent material consumption is few, easily the amount and the position of the functional liquid that disposes on the substrate is controlled.

In addition, also can make the width between adjacent cofferdam narrower than liquid-drop diameter.In this case, the functional liquid of droplet-like will enter in the cofferdam because of capillarity etc.Can form the narrower thread pattern of liquid-drop diameter like this than ejection.

And, contain electrically conductive microparticle by making described functional liquid, can form conductive pattern.Therefore this pattern can be used as distribution and is applicable in the various devices.

Second kind of pattern formation method of the present invention, utilize drop ejection method on substrate, to spray configuration feature liquid pattern that formation is decided, comprising: on described substrate, form the cofferdam, the operation that disposes so that the fabric width zone with width bigger than the diameter that circles in the air of described functional liquid is connected with the narrow zone with width narrower than this fabric width zone; By making described functional liquid flow into described narrow zone, with operation at described fabric width zone and described the described functional liquid of narrow area configurations at the described functional liquid of described fabric width zone ejection configuration.

According to the manner, in the fabric width distinguished by a cofferdam zone and a narrow zone, by to described fabric width zone ejection configuration feature liquid, make the moistening expansion of this functional liquid and flow in the narrow zone.Therefore,, functional liquid can be configured on a fabric width zone and the narrow zone to fabric width zone ejection functional liquid by only.

And in the manner, because the fabric width zone has the width bigger than the diameter that circles in the air of functional liquid, so part of functions liquid can not contact with the top of cofferdam.The residue and residual that therefore can prevent functional liquid stay the cofferdam above.

Thereby in the manner, can stably form the pattern of performance desirable characteristics.

And in above-mentioned pattern formation method, described functional liquid ejection can be configured on the intersection region in described fabric width zone and described narrow zone.

According to this pattern formation method, when being ejected the moistening expansion of the functional liquid that is configured on the intersection region owing to flow into a narrow zone easily, so can more successfully functional liquid be configured on the narrow zone.

And in above-mentioned pattern formation method, can spray the described functional liquid of configuration like that with the intersection region that surrounds described fabric width zone and described narrow zone after, to the described functional liquid of described intersection region ejection configuration.

According to this pattern formation method, by like that formerly be ejected the functional liquid of configuration with the encirclement intersection region, the moistening expansion that makes ejection be configured in the functional liquid on the intersection region is stoped by the weir, can increase the flow that flows to a narrow regional function liquid.Therefore can more successfully functional liquid be configured on the narrow zone.

The third pattern formation method of the present invention, configuration feature liquid on substrate with zone of distinguishing by the cofferdam and form decide pattern, comprising: on described substrate, form the operation in cofferdam, make the zone of distinguishing by described cofferdam comprise width than the little second area of the liquid-drop diameter of described functional liquid and with this second area in abutting connection with and the width first area bigger than the liquid-drop diameter of described functional liquid; With employing drop ejection method, the operation of the described functional liquid of ejection on described first area and described second area.

The 4th kind of pattern formation method of the present invention, adopt drop ejection method on substrate, to spray functional liquid and form decide pattern, comprising: on described substrate, form the cofferdam, circle in the air that the fabric width zone of the big width of diameter is connected with the narrow zone with width narrower than this fabric width zone and the operation that disposes so that have than described functional liquid; With by only at the described functional liquid of described fabric width zone ejection, make described functional liquid flow into described narrow zone, in the operation of described fabric width zone and described the described functional liquid of narrow area configurations.

The 5th kind of pattern formation method of the present invention, adopt drop ejection method on substrate, to spray functional liquid and form decide pattern, comprising: on described substrate, form the cofferdam, circle in the air that a narrow zone of the little width of diameter is connected and the operation that disposes with having than described functional liquid so that have than the circle in the air fabric width zone of the big width of diameter of described functional liquid; Make described functional liquid flow into described narrow zone, in the operation of described fabric width zone and described the described functional liquid of narrow area configurations with passing through at the described functional liquid of described fabric width zone ejection.

Device making method of the present invention is manufactured on the device that forms pattern on the substrate and constitute, and wherein, forms described pattern by above-mentioned pattern formation method.

According to the manner, can be implemented in the granular or the graph thinning of formed pattern on the device.Therefore can stably make high-precision device.

Particularly work as described pattern and be formed under the situation a part of in the TFT switch elements such as (thin-film transistors) of described substrate setting, can stably obtain a kind of highly integrated switch element.

Device of the present invention by using above-mentioned device manufacturing method manufactured, has high accuracy.

Electro-optical device of the present invention wherein has above-mentioned device.

As electro-optical device, for example can enumerate liquid crystal indicator, organic electroluminescence display device and method of manufacturing same, plasma-type display unit etc.

And electronic instrument of the present invention, wherein have above-mentioned electro-optical device.

According to these inventions, owing to have high-precision device, so can improve quality and performance.

In addition, the manufacture method of active matrix type substrate of the present invention wherein has: first operation that forms gate wirings at substrate; On described gate wirings, form second operation of gate insulating film; Be situated between the 3rd operation of described gate insulating film stacked semiconductor layer is arranged; On described gate insulator, form the 4th operation of source electrode and drain electrode; The 5th operation of configuration insulating material on described source electrode and described drain electrode; The 6th operation of the pixel electrode that is electrically connected with described source electrode with formation; Wherein at least one operation of described first operation, described the 4th operation and described the 6th operation, adopt pattern formation method of the present invention at least.

According to the manner, can stably form the active-matrix substrate that has thin-line-shaped pattern with high accuracy.

Description of drawings

Fig. 1 is the schematic illustration of expression pattern formation method of the present invention.

Fig. 2 A and Fig. 2 B are the figure of the example of other modes of expression wire zone.

Fig. 3 is the figure that expression forms fabric width regional location example in the wire zone.

Fig. 4 is the figure that expression forms other examples of fabric width regional location in the wire zone.。

Fig. 5 is the schematic isometric of droplet ejection apparatus.

Fig. 6 is the figure of explanation with piezoelectricity mode liquid ejection principle.

Fig. 7 A～7E is the figure of expression Wiring pattern formation order.

Fig. 8 is the figure of the another kind of Wiring pattern formation method of expression.

Fig. 9 A and 9B are the figure of other Wiring pattern formation methods of expression.

Figure 10 is the figure of another mode Wiring pattern formation method of expression.

Figure 11 is the figure of the another kind of mode Wiring pattern formation method of expression.

Figure 12 is the figure of the another kind of mode Wiring pattern formation method of expression.

Figure 13 A and 13B are the figure of other mode Wiring pattern formation methods of expression.

Figure 14 is the figure of another mode Wiring pattern formation method of expression.

Figure 15 is the figure of the another kind of mode Wiring pattern formation method of expression.

Figure 16 is the figure of another mode Wiring pattern formation method of expression.

Figure 17 is the figure of one of a kind of substrate with thin-film transistor of expression example.

Figure 18 A～18D is the figure that is expressed as explanation thin-film transistor manufacturing process.

Figure 19 is the plan view of the liquid crystal indicator seen from the subtend substrate-side.

Figure 20 is along the profile of H-H ' line among Figure 19.

Figure 21 is the equivalent circuit diagram of liquid crystal indicator.

Figure 22 is the part amplification profile of liquid crystal indicator.

Figure 23 is the part amplification profile of organic El device.

Figure 24 is the figure of the another kind of liquid crystal indicator of expression.

Figure 25 A～25C is the figure of expression electronic instrument instantiation of the present invention.

Figure 26 is the exploded perspective view of non-contact type card medium.

Among the figure: B-cofferdam, P-substrate (glass substrate), A-wire zone, As-fabric width part, W, Wp-width, F-pattern (conductive film), 30-TFT (switch element), 100-liquid crystal indicator (electro-optical device), 400-non-contact type cassette medium (electronic instrument)

Embodiment

Following with reference to description of drawings the present invention.

(first kind of execution mode)

Fig. 1 is the schematic diagram of expression pattern formation method of the present invention.

Pattern formation method of the present invention has: the cofferdam that forms cofferdam B on substrate P forms operation; Material arrangement step with configuration feature liquid L on the wire zone A that is distinguished by cofferdam B.

In the pattern formation method of the present invention,, and, can on substrate P, form linear pattern F by for example with this functional liquid L drying by configuration feature liquid L on the wire zone A that is distinguished by cofferdam B.In this case, because linear pattern F is by cofferdam B defined,, can realize granular or the graph thinning of pattern F so, suitably form cofferdam B for example by making narrowed width between adjacent cofferdam B etc.Wherein after pattern F forms, can remove cofferdam B, it is remained on the substrate P from substrate P.

And in the pattern formation method of the present invention, when forming cofferdam B on substrate P, the relevant wire zone A that is distinguished by cofferdam B widens the one partial width.That is to say, single or multiple axially being provided with of wire zone A by the width W p wideer (part (the following fabric width part A s that is called in case of necessity) of Wp＞W) constitute than other regional width W.

Wherein, the formation method as cofferdam B can adopt any means such as lithography or print process.For example under the situation that adopts lithography, can utilize spin-coating method, spraying process, rolling method, mould to be coated with method that method, dip coating etc. are decided, form on the substrate P forms by the cofferdam that material constitutes layer after, by patternings such as etching or ashing, obtain having the cofferdam B of the shape that formalizes.Wherein both can on the different other object of substrate P, form cofferdam B, also it can be configured on the substrate P.

And, for example except that macromolecular materials such as allyl resin, polyimide resin, vistanex, melamine resin, can also enumerate the material that contains inorganic matters such as silica as the formation material of cofferdam B.

In the pattern formation method of the present invention, by the width that makes the wire zone A that is distinguished by cofferdam B form broad (fabric width part A s) partly, when configuration feature liquid L, can make part of functions liquid L avoid this fabric width part A s, prevent that functional liquid L from overflowing from cofferdam B.

Generally speaking, when wire area configurations liquid, under the effect of surface tension of liquid etc., often produce liquid and flow into this zone, perhaps liquid is expanded in this zone.In contrast to this, in the pattern formation method of the present invention, in live width is provided with the part of difference, become the mobile inducement that becomes of liquid,, prevent that functional liquid L from overflowing from cofferdam B so can promote functional liquid L in the A of wire zone, to flow into or the functional liquid L expansion in the A of wire zone.And when configuration feature liquid L, self-evident suitably set-up function liquid phase is for the configuration amount of wire zone A.

Thus, in pattern formation method of the present invention, overflow from cofferdam B owing to can prevent functional liquid L when configuration functional liquid L, so pattern F is accurately formed according to required shape.Thereby, can precision good and stably form thin linear pattern F.

Wherein, in the wire zone A that is distinguished by cofferdam B, the width W p of fabric width part A s is preferably 110～500% of other partial widths W.Overflow functional liquid from the cofferdam in the time of can preventing the functional liquid configuration so really.In addition, aforementioned proportion is in a single day less than 110%, and is bad because functional liquid can not fully be avoided the fabric width part.Otherwise, then can not effectively utilize space on the substrate and bad if surpass 500%.

In addition, the shape of wire zone A is not limited to shape shown in Figure 1.The number of fabric width part A s or size, allocation position, disposition interval etc. among the A of wire zone can be according to the material or the width of pattern, or desired precision is suitably set.

Fig. 2 A and Fig. 2 B represent the example of other shapes of wire zone.

In wire zone A shown in Figure 1, fabric width part A s compares with other parts to the both sides of wire zone A central axis and widens, and in the A2 of the zone of the wire shown in Fig. 2 A, fabric width part A s1, As2 widen to a side of wire zone A2 central axis.And axially alternately forming along wire zone A2 to wire zone A2 central axis one side fabric width part A s1 that widens and the fabric width part A s2 that widens to opposite side.

In wire zone A shown in Figure 1, the marginal portion of fabric width part A s forms rectangular shape, and in the A3 of the zone of the wire shown in Fig. 2 B, the marginal portion of fabric width part A s forms triangular shaped by comparison.Wherein the marginal portion of fabric width part A s also can form circular-arc.

And Fig. 3 is the view that expression can form the example of fabric width part A s position.

Among Fig. 3, fabric width part A s is set at (F and F2) cross section between the pattern.That is to say that wire zone A is forming part fabric width part in the part that the zone with other patterns of formation F2 crosses one another.Can effectively utilize the space on the substrate like this.In addition, in Fig. 3, can utilize pattern F, can utilize pattern F2 for example as the source line (data wire) in the TFT structure for example as the gate line in the TFT structure.

And Fig. 4 is the figure that expression can form other examples of fabric width part A s position.

Among Fig. 4, fabric width part A s is set between the film figure beyond (F and F2) cross section.That is to say that the partial interior that wire zone A crosses one another in the zone with other film figures F2 formation divides the ground narrowed width to form.Can improve Devices Characteristics in that the film figure cross section is not saved under the situation of electric capacity like this.And in Fig. 4, can utilize film figure F for example as the gate line in the TFT structure, can utilize film figure F2 for example as the source line (data wire) in the TFT structure.

As the substrate P among the present invention, can enumerate various materials such as glass, quartz glass, silicon wafer, plastic film, metallic plate.And comprise and on these various material substrates surfaces, to have formed basilar memebranes such as semiconductor film, metal film, dielectric film, organic membrane.

And can adopt variously as functional liquid L of the present invention, for example can adopt the distribution printing ink that contains electrically conductive microparticle.

As the method that functional liquid L is configured in the cofferdam B institute distinguishable region, preferably adopt drop ejection method, promptly so-called ink-jet method.The advantage that adopts drop ejection method to compare with other rubbing methods such as adopting spin-coating method is that not waste is controlled the quantity and the position of configuration feature liquid on substrate easily in the consumption of fluent material.

Wiring pattern printing ink is by electrically conductive microparticle being dispersed in the dispersion liquid in the dispersant or organic silver compound and silver oxide nano particle being dispersed in solution composition in the solvent (dispersant).

As electrically conductive microparticle, for example in containing gold, silver, copper, palladium and nickel, the metal particle of any metal, can also use its oxide and electric conductive polymer and superconductor particulate etc.

These electrically conductive microparticles can also be coated with uses afterwards such as organic substance in its surface in order to improve dispersiveness.At the coating of electrically conductive microparticle used for surface applying, for example can enumerate organic solvents such as dimethylbenzene, toluene and citric acid etc.

It is above and 0.1 micron or below it that the particle diameter of electrically conductive microparticle is preferably 1 nanometer or its.If greater than 0.1 micron, the anxiety of stopping up nozzle in the droplet discharging head described later is arranged then.And in case less than 1 nanometer, the volume ratio of coating and electrically conductive microparticle will increase, and makes in the film that obtains the organic substance ratio too high.

As dispersant, so long as can disperse just not having especially of above-mentioned electrically conductive microparticle to limit.Outside dewatering, for example can also enumerate methyl alcohol, ethanol, propyl alcohol, alcohols such as butanols, normal heptane, normal octane, decane, 12 carbon alkane, tetradecane, toluene, dimethylbenzene, cymene, durene, indenes, cinene, naphthane, decahydronaphthalene, hydrocarbon compounds such as cyclohexyl benzene, and glycol dimethyl ether, ethylene glycol diethyl ether, the Ethylene Glycol Methyl ethylether, diethylene glycol dimethyl ether, diethyl carbitol, the diethylene glycol (DEG) methyl ethyl ether, 1, the 2-dimethoxy-ethane, two (2-methoxy ethyl) ether, to ether compounds such as two  alkane, and propylene carbonate, gamma-butyrolacton, the N-N-methyl-2-2-pyrrolidone N-, dimethyl formamide, dimethyl sulfoxide (DMSO), cyclohexanone isopolarity compound.Wherein from the dispersiveness of particulate and dispersion stability or from adopting the easiness viewpoint of drop ejection method (ink-jet method), preferred water, alcohols, hydrocarbon and ether compound, preferred dispersant can be enumerated water and hydrocarbon compound.

The surface tension of above-mentioned electrically conductive microparticle dispersion liquid is preferably in 0.02N/m or its above and 0.07N/m or its following scope.When adopting ink-jet method ejection liquid, in a single day surface tension is lower than 0.02N/m, because ink composite increases the wettability of nozzle face and it is crooked that flight path is produced, otherwise if surpass 0.07N/m then makes spray volume and ejection timing because of the meniscus shape of nozzle-end the is unstable control difficulty that becomes.For the adjustment form surface tension, can the contact angle with substrate not produced in the significantly reduced scope, in above-mentioned dispersion liquid, add surface tension modifier such as micro-fluorinated, silicone, nonionic class.Nonionic class surface tension modifier can improve the wettability of liquid to substrate, improves the levelability of film, has to prevent that film from producing small concavo-convex effect.Above-mentioned surface tension modifier can also contain organic compounds such as alcohols, ethers, ester class, ketone in case of necessity.

The viscosity of above-mentioned dispersion liquid is preferably 1mPas or it is above with 50mPas or below it.When adopting ink-jet method with drop form ejection fluent material, under the situation of viscosity less than 1mPas, pollute because of the outflow of printing ink easily in the nozzle periphery part, and under the situation of viscosity greater than 50mPas, the blocked frequency of nozzle bore increases, and is difficult to successfully spray drop.

As the ejection technology of drop ejection method, can enumerate charged control mode, pressurization and vibration mode, motor conversion regime, electric heating conversion regime, electrostatic attraction mode etc.Charged control mode is meant with charged electrode gives material with electric charge, the mode that makes it to spray from nozzle with the direction of circling in the air of deflecting electrode control material.The pressurization and vibration mode is meant material is applied superhigh pressure about 30 kilograms/square centimeter, make the mode of material to the distolateral ejection of nozzle tip, do not adding under the control voltage condition, material can directly enter and spray from nozzle, if apply control voltage, between material, will produce the Coulomb repulsion effect, material is dispersed and can not spray from nozzle.In addition, the motor conversion regime is meant and utilizes piezoelectric element (piezoelectric element) to accept the character of being out of shape behind the pulse electrical signal, exerted pressure in the space of storage material by flexible material by the piezoelectric element distortion, extrded material makes it the mode of nozzle ejection from this space.

And the electric heating conversion regime is meant and utilizes the heater be arranged on to make the material generation bubble that sharply gasifies in storage material the space in, the mode that the material in the space is sprayed by means of the pressure of bubble.The electrostatic attraction mode is meant in the space to storage material and applies slight pressure, forms the material meniscus in nozzle, applies the mode that material is attracted out behind the electrostatic attraction in this state.Can adopt the mode that fluid viscosity is changed by electric field in addition, and the applying charge spark technology such as mode of circling in the air.Drop ejection method has material and uses upward less wastage, and can accurately dispose the advantage of aequum material in desired location.And utilize drop ejection method to spray the amount of a drop of liquid material (fluid), for example be 1～300 nanogram.

In the pattern formation method of the present invention, can form pattern with printing ink with conductivity with above-mentioned Wiring pattern.This conductive pattern can be used as distribution and is useful in the various devices.

To be expression illustrate the stereogram of formation as droplet ejection apparatus (ink discharge device) IJ one of device example that is used for the pattern method of formationing of the present invention, that dispose fluent material by drop ejection method on substrate to Fig. 5.

Droplet ejection apparatus IJ has droplet discharging head 1, X-direction driving shaft 4, the Y direction axis of guide 5, control device CONT, stand 7, wiper mechanism 8, pedestal 9 and heater 15.

Stand 7 is parts of supporting that the substrate P of the configuration printing ink of droplet ejection apparatus IJ thus (fluent material) is used, wherein has substrate P is fixed on the not shown fixed mechanism that the reference position is used.

Droplet discharging head 1 is the multiinjector type droplet discharging head part that has a plurality of nozzles, and is vertically consistent with X-direction.A plurality of nozzles along Y direction be set at certain intervals side by side droplet discharging head 1 below.From the nozzle of droplet discharging head 1, spray the printing ink that contains above-mentioned electrically conductive microparticle to the substrate P that is supported on the stand 7.

X axis CD-ROM drive motor 2 is connected on the X axis driving shaft 4.X-direction CD-ROM drive motor 2 is stepper motors etc., in case send the X axis drive signal from control device CONT, just can make 4 rotations of X axis driving shaft.X axis driving shaft 4 is in case rotation just can make droplet discharging head 1 move along X-direction.

The Y direction axis of guide 5 is fixed to such an extent that can not move with respect to pedestal 9.Stand 7 has Y direction CD-ROM drive motor 3.Y direction CD-ROM drive motor 3 is stepper motors etc., in case send the drive signal of Y direction from control device CONT, stand 7 is moved along Y direction.

Control device CONT supplies with drop ejection control voltage to droplet discharging head 1.And move the drive signal of usefulness along X-direction to what X-direction CD-ROM drive motor 2 was supplied with control droplet discharging heads 1, supply with control stands 7 move usefulness along Y direction drive signal to Y direction CD-ROM drive motor 3.

Wiper mechanism 8 is mechanisms of cleaning fluid droplet ejection head 1 usefulness.Wiper mechanism 8 has not shown Y direction CD-ROM drive motor.By driving this Y direction CD-ROM drive motor wiper mechanism is moved along the Y direction axis of guide 5.Moving of wiper mechanism 8 also controlled by control device CONT.

Heater 15 here is a kind of mechanism that substrate P is heat-treated with the lamp annealing way, to being coated on the substrate P in the fluent material that contained solvent evaporates and dry.The conducting of these heater 15 power supplys and cut-out are also controlled by control device CONT.

Droplet ejection apparatus IJ, with respect to the stand 7 of supporting droplet discharging head 1 and substrate P scan on one side, on one side to substrate P ejection drop.In the following description, will be with X-direction as the scanning direction, will with the Y direction of X-direction quadrature as non-scanning direction.Therefore, the nozzle with droplet discharging head 1 is set up in parallel on the Y direction as non-scanning direction at certain intervals.And in Fig. 5,, also can adjust the angle of droplet discharging head 1 though dispose droplet discharging head 1 to such an extent that meet at right angles with respect to the travel direction of substrate P, make it to intersect with respect to the travel direction of substrate P.So, can regulate spacing between the nozzle by the angle of adjusting droplet discharging head 1.And can regulate distance between substrate P and the nozzle face arbitrarily.

Fig. 6 is the figure that sprays the fluent material principle for explanation in the piezoelectricity mode.

Among Fig. 6, it is adjacent with the liquid chamber 21 of receiving fluids material (Wiring pattern printing ink, functional liquid) that piezoelectric element 22 is set to.The fluent material feed system 23 of the material tank by comprising the receiving fluids material is to liquid chamber 21 feed fluid materials.

Piezoelectric element 22 is connected with drive circuit 24, applies voltage by this drive circuit 24 to piezoelectric element 22, and liquid chamber 21 is out of shape by the distortion that makes piezoelectric element 22, can be from nozzle 25 ejection fluent materials.In this case, by the magnitude of voltage that applies being changed control the deflection of piezoelectric element 22.And by making the frequency that applies voltage change the deformation velocity of may command piezoelectric element 22.

The ejection of the drop of piezoelectricity mode is not owing to heat material, is difficult for exerting an influence so advantage is a composition to material.

A following example as Wiring pattern formation method execution mode of the present invention is described in detail in the method that forms the conducting film distribution on the substrate with reference to accompanying drawing 7A～7E.

The pattern formation method that present embodiment relates to, be the above-mentioned Wiring pattern printing ink (Wiring pattern formation material) of configuration on substrate, on this substrate, form the method for distribution, form operation, residue treatment operation, lyophoby treatment process, material arrangement step, middle drying process and firing process by the cofferdam substantially and constitute with conductive film pattern.

Below each operation of each operation is elaborated.

(cofferdam formation operation)

The cofferdam has been the parts of isolated part effect, and the formation in cofferdam can adopt any means such as offset printing method and print process to carry out.For example adopt under the situation of offset printing method, with spin-coating method, spraying process, rolling method, mould be coated with method, dip coating etc. decided method, shown in Fig. 7 A, according to the height in cofferdam on the substrate P, coating cofferdam material 31, painting erosion resistant agent layer thereon.Applying mask according to cofferdam shape (Wiring pattern) then makes the resist exposure and develops the residual resist consistent with the cofferdam shape down.Final etch is removed the mask cofferdam material of part in addition.Form to such an extent that functional liquid is shown the material of lyophily but also can form lower floor by inorganic matter or organic substance, and the upper strata is to be formed and shown cofferdam (protuberance) more than two-layer that the material of lyophobicity constitutes by organic substance.

By this method, shown in Fig. 7 B, outstanding setting is the cofferdam B of 15 microns of width for example, surrounds so that should form the periphery in the zone of Wiring pattern.

And shown in Figure 1 in this example as the front, can form the wire zone by the cofferdam, form the wide cut part that constitutes than other regional wide wide cuts by width on axial relevant institute's allocation in wire zone therewith.

And before the organic material coating, handle, though implemented the HMDS processing (with vaporous coating (CH as the upgrading that substrate P is carried out the surface ₃) ₃SiNHSi (CH ₃) ₃Method), but in Fig. 7 A～7E, but omitted relevant diagram.

(residue treatment operation (lyophily treatment process))

And then substrate P implemented the residue treatment operation, so that remove between the cofferdam resist (organic substance) residue the when cofferdam forms in 34.

As the residue treatment operation, though can select to carry out ultraviolet ray (UV) treatment with irradiation of residue treatment and in air atmosphere, deal with the O of gas with oxygen by irradiation ultraviolet radiation ₂Plasma treatment etc., but that enforcement is O here ₂Plasma treatment.

Specifically, employing is carried out to the mode of substrate P irradiation plasmoid oxygen from the plasma discharge electrode.As O ₂Plasma process conditions for example is: plasma power is that 50～1000W, oxygen flow are that the relative moving speed of 50～100 ml/min, substrate and plasma discharge electrode is that 0.5～10 mm/second clock, substrate temperature are 70～90 ℃.

In addition, be under the situation of glass substrate when substrate P, though forming material to Wiring pattern, its surface has lyophily, as present embodiment, for residue treatment is implemented O ₂Under the situation that plasma treatment and ultraviolet irradiation are handled, can improve the lyophily of substrate surface.

(lyophoby treatment process)

Then cofferdam B is carried out the lyophoby processing, give this surface lyophobicity.

As the lyophoby processing, for example can adopt the plasma processing method (CF that in air atmosphere, deals with gas with tetrafluoromethane ₄Plasma processing method).CF ₄Plasma process conditions for example is: plasma power is that 50～1000W, tetrafluoromethane gas flow are that the relative moving speed of 50～100 ml/min, substrate and plasma discharge electrode is that 0.5～1020 mm/second clock, substrate temperature are 70～90 ℃.

In addition, handle gas and be not limited to tetrafluoromethane (carbon tetrafluoride), also can adopt other fluorinated hydrocarbon gas.

By this lyophoby processing, can be fluorine-based to importing in the resin that constitutes it to cofferdam B, give high lyophobicity.And, as the O of above-mentioned lyophily processing ₂Plasma treatment, though also can before forming, cofferdam B carry out, because in case at O ₂Carry out before the plasma treatment, cofferdam B just has the character of being fluoridized (lyophobyization) easily, so preferably carry out O after formation cofferdam B forms ₂Plasma treatment.

Also have, by cofferdam B is carried out the lyophoby processing, the substrate P surface through the lyophily processing is formerly more or less influenced, particularly under the situation that substrate P is made up of glass etc., owing to be difficult to import fluorine atom because of the lyophoby processing, so to the lyophily of substrate P, promptly wettability does not have essential quality of damages.

And adopt the material (resin material that for example contains fluorine atom) that had lyophobicity originally to form under the situation of cofferdam B, also can omit this lyophoby processing.

(material arrangement step and middle drying process)

Below adopt the drop ejection method of front droplet ejection apparatus IJ shown in Figure 5, on the zone of being distinguished by the cofferdam on the substrate P, promptly the configuration Wiring pattern forms material between the B of cofferdam.And in this example, with printing ink (functional liquid L), ejection is dispersed in dispersion liquid in the solvent (dispersant) with electrically conductive microparticle as Wiring pattern.Electrically conductive microparticle used herein for example the metal particle of any metal, can also use electric conductive polymer or superconductor particulate etc. in containing gold, silver, copper, palladium and nickel.

That is to say, in material arrangement step, shown in Fig. 7 C, by droplet discharging head 1 with drop form ejection functional liquid L, with this droplet configuration between the cofferdam B on the substrate P.As drop ejection condition, for example can under the condition of ink by weight 4 nanograms/drip, printing ink speed (spouting velocity) 5～7 meter per second clocks, carry out.

At this moment, because the configuring area of functional liquid separated by cofferdam B, so can stop this functional liquid on substrate P, to spread.

And shown in Fig. 7 C, when (be liquid-drop diameter D greater than cofferdam B between under the situation of width W) under the situation that width is littler than liquid-drop diameter D between adjacent cofferdam B, shown in two chain-dotted lines among Fig. 7 D, though some drop is on the B of cofferdam, under effects such as capillarity and functional liquid L is entered between the B of cofferdam.In this example, cofferdam B is owing to being endowed lyophobicity, so functional liquid will leave cofferdam B and more positively flow between the B of cofferdam.

In addition, because the surface of substrate P has been endowed lyophily, so the functional liquid L that flows between the B of cofferdam can evenly expansion in the zone that this is distinguished.Can form a kind of like this than spraying filming of the narrower live width W of liquid-drop diameter D.

And then, in this example, shown in Figure 1 as the front, owing to the width in wire zone is partly widened and is formed, so when configuration feature liquid, on this fabric width part, can avoid part of functions liquid, thereby can prevent really that functional liquid from overflowing from the cofferdam, can also promote in this zone, to expand simultaneously.

(middle drying process)

Behind configuration feature liquid on the substrate P, in order to remove dispersant and to guarantee to carry out dried in case of necessity by thickness.Dried for example the common electric hot plate of using except that heated substrates P, electric furnace etc. are handled, can also adopt the mode of lamp annealing to carry out.

There is no particular restriction to make the light source of using up as lamp annealing, can use excimer lasers such as infrared lamp, xenon lamp, YAG laser, argon laser, carbon dioxide laser, XeF, XeCl, XeBr, KrF, KrCl, ArF, ArCl etc. as light source.These light sources generally can use power as 10W or more than it and in 5000W or its following scope, but use power to be in just enough in 100W or its above and 1000W or its following scope in the present embodiment.

(firing process)

To realize between particulate fully electrically contacting in order making, need to remove dispersant fully for the desciccator diaphragm after the ejection operation.And be coated with under the situation of coating materials such as organic substance for the dispersiveness that improves the electrically conductive microparticle surface, also need to remove this coating material.For this implements heat treatment and/or optical processing to the substrate of ejection after the operation.

Heat treatment and/or optical processing are carried out in atmosphere usually, but also can carry out in inert gas atmospheres such as nitrogen, argon gas, helium as required.The treatment temperature of heat treatment and/or optical processing, can according to thermal behaviors such as the dispersiveness of the kind of the boiling point (vapour pressure) of dispersant, atmosphere gas and pressure, particulate or oxidizability, coating material have or not or the heat resisting temperature of quantity and basis material etc. is suitably determined.

For example, in order to remove the coating material of forming by organic substance, need under about 300 ℃, burn till.In this case, for example also can on the desciccator diaphragm of cofferdam B and functional liquid, be coated with low-melting glass in advance.

And under the situation of using substrates such as plastics, preferably to 100 ℃ or its following temperature, carry out in room temperature or more than it.

Can guarantee electrically contacting between the particulate by the desciccator diaphragm after the above operation ejection operation, shown in Fig. 7 E, be converted into electrical conductance film (pattern F).

Just as described above, the pattern formation method that this is routine forms to such an extent that partly widen by making the wire zone of being distinguished by the cofferdam, can prevent really that functional liquid from overflowing from the cofferdam, can also promote the expansion in this wire zone simultaneously.Therefore can stably form thin-line-shaped pattern with high accuracy.

(second kind of execution mode)

Following second kind of execution mode that pattern formation method of the present invention is described with reference to Fig. 8.

Fig. 8 is the schematic diagram of using for the pattern formation method that the explanation present embodiment relates to.Wherein in the following description, the component part identical or equal with above-mentioned execution mode will be given same-sign, and relevant its explanation is conformed to the principle of simplicity or omitted.

In Fig. 8, on substrate P, be formed with the first trench portions 34A (fabric width zone) that has the first width H1 because of the cofferdam, with the second trench portions 34B with second width H2 (a narrow zone) that is connected with this first trench portions 34A.The first width H1 forms greatlyyer than the functional liquid drop diameter that circles in the air.The second width H2 forms narrowlyer than the first width H1.In other words, the second width H2 is equal to or less than the first width H1.And first trench portions 34A form in Fig. 8 X-direction extend, and the second trench portions 34B form in Fig. 8 Y direction extend.

In order on above-mentioned trench portions 34A, 34B, to form pattern F, at first as shown in Figure 9, utilize droplet discharging head 1 on institute's allocation of the first groove 34A, dispose to contain the drop of the functional liquid L of the Wiring pattern printing ink that formation pattern F uses.When the drop of the first trench portions 34A configuration feature liquid L, use shower nozzle 1 from the top of the first trench portions 34A to first trench portions 34A ejection drop.In the present embodiment, shown in Fig. 9 A, with the drop of functional liquid L along vertical (X-direction) of the first trench portions 34A with decided arranged spaced.This moment also can be with the droplet configuration of functional liquid L in the first trench portions 34A near the first trench portions 34A and the coupling part 37 that the second trench portions 34B is connected (intersection region).

Shown in Fig. 9 B, the functional liquid L that is configured in the first trench portions 34A is because of gravity flow moistening expansion in the first trench portions 34A.Be configured in the functional liquid L of the first trench portions 34A in addition, because of gravity flow moistening expansion in the second trench portions 34B.So just can need not on the second trench portions 34B, the second trench portions 34B directly to be sprayed drop, functional liquid L also is configured on the second trench portions 34B.

Thus, will when the first trench portions 34A configuration feature liquid L, can functional liquid L be configured on the second trench portions 34B by means of the gravity flow (capillarity) of the functional liquid L that is configured in this first trench portions 34A.Even thereby not on the B of cofferdam to the drop of the second trench portions 34B ejection functional liquid L of H2 in a narrow margin, also can successfully functional liquid L be configured on the second trench portions 34B.Particularly the width H2 as the second trench portions 34B is narrow, and from the liquid-drop diameter (liquid-drop diameter circling in the air) of droplet discharging head 1 ejection than under the also narrow situation of H2, also flow and functional liquid L successfully can be configured on the second trench portions 34B by means of the gravity flow of functional liquid L.Thereby can form pattern with required form.And owing to functional liquid L successfully can be configured on the second narrow trench portions 34B, so can realize the graph thinning (miniaturization) of pattern.On the other hand, because the width H1 of the first trench portions 34A is wide, even go up drop to first trench portions 34A ejection functional liquid L from cofferdam B, part of functions liquid L drops on the top 38 of cofferdam B, thereby can avoid the residual rough sledding of residue and occur.Therefore can stably form the pattern of performance desirable characteristics.

In addition if adopt present embodiment, then owing to functional liquid L can be configured near the first trench portions 34A among the first trench portions 34A and the coupling part 37 that the second trench portions 34B is connected, so can when the moistening expansion of functional liquid L, flow in the second trench portions 34B, thereby can more successfully functional liquid L be configured in the second trench portions 34B.

After being configured in functional liquid L in the first trench portions 34A and the second trench portions 34B, same with above-mentioned first kind of execution mode, can form pattern F by middle drying process and firing process.

In addition, as shown in figure 10, can also only after the functional liquid La by the functional liquid solvent composition, dispose above-mentioned functions liquid L again to second trench portions 34B ejection configuration.By spray configuration feature liquid L in this manner in the second trench portions 34B, functional liquid L flows among the second trench portions 34B easily, thereby can more successfully functional liquid L be configured in the second trench portions 34B.And, functional liquid La do not have conductivity because of not containing electrically conductive microparticle.Even therefore under the situation of remaining function liquid L on the B of cofferdam, the desirable characteristics of pattern F is changed.

And can after functional liquid L configuration, carry out the vacuumize operation.Because carrying out the vacuumize operation makes functional liquid L by vacuum draw, so also can more successfully functional liquid L be configured in the second trench portions 34B in this case.

Can also be in functional liquid L configuration back at functional liquid L to the second trench portions 34B blowing gas.Like this by to functional liquid L to the second trench portions 34B blowing gas, functional liquid L is flowed among the second trench portions 34B, so also can successfully functional liquid L be configured in the second trench portions 34B in this case easily.

In addition, as shown in figure 11, can also connect the coupling part 37 of the first trench portions 34A and the second trench portions 34B, be arranged to from the first trench portions 34A to the second trench portions 34B narrow down gradually horn-like.The functional liquid L that is configured in the first trench portions 34A is successfully flowed in the second trench portions 34B.

In addition as shown in figure 12, in the mode that the bearing of trend of the bearing of trend that makes the first trench portions 34A and the second trench portions 34B crosses one another, also the width H1 ' of the second trench portions 34B near zone among the first trench portions 34A can be provided with than other regional width H1 local stenosis.Even the functional liquid L that is configured in the first trench portions 34A is successfully flowed in the second trench portions 34B.In this case, tilt towards the second trench portions 34B direction, the functional liquid L that is configured in the first trench portions 34A is successfully flowed in the second trench portions 34B by the internal face Bh that makes the cofferdam B that forms the first trench portions 34A.

Have again, in above-mentioned various execution modes, though the bearing of trend that makes the first trench portions 34A with wide cut H1 is different mutually with the bearing of trend with second trench portions 34B of H2 in a narrow margin, but also can be shown in Figure 13 A and 13B, the bearing of trend of the first trench portions 34A that will have wide cut H1 is identical with the bearing of trend with second trench portions 34B of H2 in a narrow margin.As shown in FIG. 13A,, rely on self flowing of this functional liquid L, shown in Figure 13 B, functional liquid L can be configured in the second trench portions 34B by functional liquid L is configured in the first trench portions 34A.And in this case, by making the coupling part 37 of the first trench portions 34A and the second trench portions 34B, form narrow down gradually from the first groove 34A towards the second trench portions 34B direction horn-like, the functional liquid L that is configured in the first trench portions 34A is successfully flowed in the second trench portions 34B.

And the functional liquid in L is configured in the first trench portions 34A relies on self flowing when being configured in the second trench portions 34B of this functional liquid L, as shown in figure 14, can also be in the first trench portions 34A coupling part 37 of the first trench portions 34A and the second trench portions 34B with exterior domain dyke part 39 is set.Dyke part 39 among Figure 14 is drops of the functional liquid L that disposes on the first trench portions 34A.That is to say, as the drop of the functional liquid L of dyke part 39 usefulness, be can not flow in the second trench portions 34B, near the drops that surround the coupling part 37 with the first trench portions 34A and the second trench portions 34B among the first trench portions 34A of initial configuration.Among Figure 14, the drop that is configured at first that plays 39 effects of dyke part is given symbol " 1 ".And rely on self to flow to be configured in the functional liquid L that uses in the second trench portions 34B, to be configured between coupling part 37 and the dyke part 39.Give symbol " 2 " to this drop.So, be configured in the drop " 2 " of the functional liquid L between the coupling part 37 and dyke part 39 (drop " 1 ") among the first trench portions 34A, can stop beyond coupling part 37 and locate to flow, and 37 flow towards the coupling part.Therefore, the functional liquid L flow that flows in the second trench portions 34B is increased, drop " 2 " successfully flows in the second trench portions 34B by coupling part 37.

And as shown in figure 15, the internal face Bh that also can utilize cofferdam B is as dyke part 39.

In addition as shown in figure 16, in the first trench portions 34A, have in the connected mode than the 3rd trench portions 34C of the narrower width of width H2 of the width H1 of the first trench portions 34A and the second trench portions 34B, because the internal face Bh of cofferdam B has the function of dyke part 39, so the functional liquid L that is configured among the first trench portions 34A can successfully flow among the second trench portions 34B and the 3rd trench portions 34C.

(thin-film transistor)

Wiring pattern formation method of the present invention is in the time of can being applicable to formation switch element as shown in figure 17 with thin-film transistor (TFT) and connected distribution.Among Figure 17, have on the TFT substrate P of TFT, having gate wirings 40, the gate electrode 41 that is electrically connected of gate wirings 40, source distribution 42, the source electrode 43 that is electrically connected of source distribution 42, drain electrode 44, the pixel electrode 45 that is electrically connected with drain electrode 44 therewith therewith.Gate wirings 40 forms to such an extent that extend along X-direction, and gate electrode 41 forms to such an extent that extend along Y direction.And the width H2 of gate electrode 41 also the width H1 than gate wirings 40 is narrow.These gate wirings 40 and gate electrode 41 can adopt the pattern formation method that the present invention relates to form.

And in the above-described embodiment,, also can be used to make other inscapes such as source electrode, drain electrode, pixel electrode though be to use the pattern formation method that the present invention relates to form the gate wirings of TFT (thin-film transistor).Following manufacture method with reference to Figure 18 A～18D explanation TFT.

Shown in Figure 18 A, at first adopting photoetching process formation on washed glass substrate 610 that a pel spacing is set is the ground floor cofferdam 611 that 1/20～1/10 groove 611a uses.Need to have light transmission and lyophobicity after this cofferdam 611 forms, can use macromolecular materials such as acrylic resin, polyimide resin, olefin resin, melamine resin as its material.

In order to make the cofferdam 611 after such formation have lyophobicity, need to implement CF ₄Plasma treatment etc. (adopting the plasma treatment of fluoro-gas) perhaps replace filling lyophoby composition (fluoro base etc.) in cofferdam 611 materials itself in advance.Can omit CF in this case ₄Plasma treatment.

Be preferably 40 ° or more than it through the cofferdam 611 of such lyophobyization with respect to the contact angle of ejection printing ink, and preferably guarantee to be 10 ° or below it as the contact angle of glass.That is to say, the process inventor's etc. result of the test is confirmed, contact angle after for example electrically conductive microparticle (tetradecane solvent) being handled is adopting acrylic resin can guarantee to be approximately 54.0 ° (under the situation that is untreated are 10 ° or below it) under as the situation of cofferdam 611 original materials.And these contact angles are to be 550 watts at plasma power, supply with 0.1 liter of/minute speed to obtain under the treatment conditions of tetrafluoromethane gas.

In the gated sweep electrode forming process after above-mentioned ground floor cofferdam forms operation, utilize the ink gun ejection to contain the drop of conductive material, make it to fill up the above-mentioned groove 611a that is distinguished by cofferdam 611, can form gated sweep electrode 612 like this as scanning area.And when forming gated sweep electrode 612, can adopt the pattern formation method that the present invention relates to.

Conductive material as this moment can suitably adopt Ag, Al, Au, Cu, Pd, Ni, W-Si and electric conductive polymer etc.The gated sweep electrode 612 of Xing Chenging like this, owing to give cofferdam 611 with sufficient lyophobicity in advance, thereby can under the situation of not oozing out, form fine Wiring pattern from groove 611a.

Can on substrate 610, form the first conductive layer A1 that has smooth upper surface that forms by cofferdam 611 and gated sweep electrode 612 by above operation.

In order in groove 611a, to obtain good ejection effect, shown in Figure 18 A, the shape of this groove 611a preferably adopt the toriconical shape (towards emission direction dehisce skewed).Can make the drop that is ejected fully enter the depths like this.

And then shown in Figure 18 B, make gate insulating film 613, active layer 621 and contact layer 609 continuous film formings by plasma CVD method.By unstrpped gas or condition of plasma are changed, can form silicon nitride film as gate insulating film 613, amorphous silicon film is as active layer 621, and n+ type silicon fiml is as contact layer 609.Under the situation with the formation of CVD method, need the thermal history of 300～350 ℃ of experience, adopt under the situation of inorganic based material in the cofferdam, can avoid the transparency and stable on heating problem.

Second layer cofferdam after above-mentioned semiconductor layer forms operation forms in the operation, shown in Figure 18 C, on gate insulating film 613, forming a pel spacing is set is 1/20～1/10 and the second layer cofferdam 614 used with groove 614a that above-mentioned groove 611a intersects according to photoetching process.Need to possess light transmission and lyophobicity after this cofferdam 614 forms, can adopt macromolecular materials such as acrylic resin, polyimide resin, olefin resin, melamine resin as its material.

In order to make the cofferdam 614 after such formation have lyophobicity, need to implement CF ₄Plasma treatment etc. (adopting the plasma treatment of fluoro-gas) perhaps replace filling lyophoby composition (fluoro base etc.) in cofferdam 614 materials itself in advance.Can omit CF in this case ₄Plasma treatment.

By the contact angle of the cofferdam 614 of lyophobyization, preferably guarantee in this way at 40 ° or more than it with respect to ejection printing ink.

Source after above-mentioned second layer cofferdam forms operation, drain electrode form in the operation, utilize the ink gun ejection to contain the drop of conductive material, shown in Figure 18 D, making it to fill up what distinguished by cofferdam 614 itself is in the above-mentioned groove 614a of scanning area, forms the source electrode 615 and the drain electrode 616 that intersect with above-mentioned gated sweep electrode 612.And when forming source electrode 615 and drain electrode 616, can adopt the pattern formation method that the present invention relates to.

The conductive material of usefulness can suitably adopt Ag, Al, Au, Cu, Pd, Ni, W-Si and electric conductive polymer etc. at this moment.Source electrode 615 of Xing Chenging and drain electrode 616 like this, owing to give cofferdam 614 with sufficient lyophobicity in advance, so can under the situation of not oozing out, form fine Wiring pattern from groove 614a.

And insulating material 17 can be disposed to such an extent that make the groove 614a landfill that has disposed source electrode 615 and drain electrode 616.Can on substrate 610, form the smooth upper surface of forming by cofferdam 614 and insulating material 617 620 by above operation.

And then on insulating material 617, form contact hole 619, and form the pixel electrode (ITO) 618 that is patterned on 620 in the above simultaneously, by contact hole 619 drain electrode 616 and pixel electrode 618 are coupled together and make TFT.

(electro-optical device)

The following describes liquid crystal indicator as one of electro-optical device of the present invention example.

Figure 19 is about in the liquid crystal indicator that the present invention relates to, from each inscape common show relatively to the plane graph observed of substrate-side, Figure 20 is the profile of H-H ' straight line in Figure 19.Figure 21 be in the image display area of liquid crystal indicator with the various elements of a plurality of pixels of rectangular formation, the equivalent circuit diagram of distribution, Figure 22 is the part section enlarged drawing of liquid crystal indicator.Wherein in the following description, in order to discern each layer and each parts in the drawings, the size of each layer and each parts has been done different processing on ratio.

In Figure 19 and Figure 20, the liquid crystal indicator of present embodiment (electro-optical device) 100 constitutes, the encapsulant 52 that paired tft array substrate 10 and subtend substrate 20 are made the photo-curable sealing material use is glued together, and encloses and maintain liquid crystal 50 in the zone that encapsulant 52 is distinguished thus.Form pent frame-like in the zone of encapsulant 52 in real estate, do not have liquid crystal injecting port, so there is not the vestige of sealed material seal.

On the medial region in the formation zone of encapsulant 52, be formed with the frame of forming by light screening material 53.In the exterior lateral area of encapsulant 52, one side along being formed with data line drive circuit 201 and binding post 202 is installed of tft array substrate 10, Yi Bian be formed with scan line drive circuit 204 along adjacent therewith both sides.Be provided with on one side to connect in all the other of tft array substrate 10 and be arranged on a plurality of distributions 205 of using between the scan line drive circuit 204 of both sides, pixel display area territory.And, be provided with conductive material 206 between the substrate that conducts usefulness between tft array substrate 10 and the subtend substrate 20 at least one place in the bight of subtend substrate 20.

In addition, also can be by means of anisotropic conducting film, for example will install to drive and carry out being connected on machinery and the electricity, replace formation data line drive circuit 201 and scan line drive circuit 204 on tft array substrate 10 with this with TAB (the Tape Automated Bonding) substrate of LSI and the binding post group that forms at tft array substrate 10 peripheral parts.And, in liquid crystal indicator 100, kind according to the liquid crystal 50 that uses, promptly according to patterns such as TN (twisted nematic) pattern, C-TN method, VA mode, IPS modes, and normal white mode/normally difference of black pattern, polarizer, Polarizer etc. are set on deciding direction are configured, but omit here its diagram by deciding direction.

And use liquid crystal indicator 100 to do under the situation of colored demonstration usefulness; in subtend substrate 20 in tft array substrate 10 relative with each pixel electrode described later to the zone in, for example form colored filter with red (R), green (G), blue (B) simultaneously with its diaphragm.

In the pixel display area territory of the liquid crystal indicator 100 of this structure, as shown in figure 21, with rectangular when being formed with a plurality of pixel 100a, on each pixel of these pixels 100a, form pixel switch with TFT (switch element) 30, will supply with picture element signal S1, S2 ... the data wire 6a of Sn is connected electrically on the source electrode of TFT30.Write picture element signal S1, the S2 of data wire 6a ... Sn both can supply with each line in this order successively, also can supply with by group between many adjacent data wire 6a.And it constitutes and in advance scan line 3a is connected electrically on the grid of TFT30, according to institute regularly preface with pulse scanning-line signal G1, G2 ... Gm order according to this is applied on the scan line 3a by line successively.

Pixel electrode 19 is electrically connected with the drain electrode of TFT30 in advance, only is in unlatching (ON) state at certain hour by making the TFT30 that uses as switch element, with the timing preface to each pixel write the picture element signal S1, the S2 that supply with from data wire 6a ..., Sn.In this way by pixel electrode 19 write liquid crystal decide level picture element signal S1, S2 ..., Sn, can between the counter electrode 121 of subtend substrate 20 shown in Figure 20, keep certain hour.And for prevent to be held picture element signal S1, S2 ..., Sn leakage, can be attached to the liquid crystal capacitance savings electric capacity 60 arranged side by side that pixel electrode 19 and counter electrode 121 form.For example, the voltage of pixel electrode 19 is only than applying long three-figurely kept by saving electric capacity 60 in long-time than source voltage time.Can improve the retention performance of electric charge like this, make the high liquid crystal indicator of contrast 100.

Figure 22 is the part section enlarged drawing with liquid crystal indicator 100 of bottom gate polar form TFT30, is constituting on the glass substrate P of tft array substrate 10, is formed with the gate wirings of using as conductive film 61 with above-mentioned pattern formation method formation.

On gate wirings 61, be laminated with the semiconductor layer of forming by amorphous silicon (a-Si) layer 63 across the gate insulating film of forming by SiNx 62.With the part of gate wirings therewith relatively to part semiconductor layer 63 as passage area.Stacked promising ohm that obtains connects required the binder course 64a and the 64b that for example are made up of n+ type a-Si layer on semiconductor layer 63, on the semiconductor layer 63 in the passage area middle body, is formed with the insulating properties etchant resist of being made up of SiNx 65 of protecting that passage uses.In addition, behind evaporation (CVD),, can be patterned to the shape shown in the figure through painting erosion resistant agent, sensitization, development and photoetching.

In addition, the pixel electrode 19 that will be made up of binder course 64a, 64b and ITO is film forming too, carries out photoetching simultaneously, can be patterned to illustrated shape.So on pixel electrode 19, gate insulating film 62 and etchant resist 65, spue respectively cofferdam 66 is set ..., in these cofferdam 66 ... between form source line and thread cast-off with the drop of above-mentioned droplet ejection apparatus IJ ejection silver compound.

The liquid crystal indicator of present embodiment, by above-mentioned pattern formation method, owing to can stably form the conducting film of miniaturization or graph thinning with high accuracy, so can obtain high quality and performance.

Have again, in the above-described embodiment,, also can be used for beyond the liquid crystal indicator, for example be used among organic EL (electroluminescence) display device though be to adopt with TFT30 to drive the formation of using switch element as liquid crystal indicator 100.Organic EL display device, have the film that will contain the inorganic and organic compound of fluorescence and be clipped in therebetween formation by negative electrode and anode, make it to excite and generate exciton by inject electronics or hole to above-mentioned film, utilize this exciton again in conjunction with the time emit light (fluorescence, phosphorescence) character make it luminous element.So on substrate with above-mentioned TFT30, present red, green and blue look luminous material of all kinds in the fluorescent material that will on organic EL display element, use, be that luminescent layer forms material and hole injection/electron supplying layer forms material as printing ink, under the situation with its patterning, can make self-luminous filter-El element respectively.Also comprise this organic EL device in device among the present invention (electro-optical device) scope, can obtain having the organic EL device of the distribution of multiple function.

Figure 23 is the end view that utilizes the organic EL device of a part of inscape that above-mentioned droplet ejection apparatus IJ makes.The following formation that organic El device is described with reference to Figure 23.

Among Figure 23, organic El device 401, be on the organic EL 402 that constitutes by substrate 411, circuit element part 421, pixel electrode 431, cofferdam 441, light-emitting component 451, negative electrode 461 (to electrode) and hermetic sealing substrate 471, connected the distribution of flexible base, board (diagram slightly) and the device of drive IC (diagram slightly).Circuit element part 421 is a kind of TFT60 that form on substrate 411 as active element, is arranged by a plurality of pixel electrodes 431 permutation on circuit element part 421 to constitute.And the gate wirings 61 that constitutes TFT60 can form with the Wiring pattern formation method of above-mentioned execution mode.

Trellis ground is formed with cofferdam 441 between each pixel electrode 431 in advance, is formed with light-emitting component 451 on the recess opening 444 that is formed by cofferdam 441.Wherein light-emitting component 451 is made of red light-emitting component, green luminousing element and blue light emitting device in advance, and organic El device 401 can be realized panchromatic demonstration like this.Negative electrode 461 in the cofferdam 441 and the top of light-emitting component 451 form comprehensively, stacked sealing is with substrate 471 on negative electrode 461.

The process for making that comprises the organic El device 401 of organic EL has that the cofferdam that forms cofferdam 441 forms operation, suitably forms light-emitting component 451 usefulness plasma treatment operations, the light-emitting component that forms light-emitting component 451 forms operation, forms the sealing process that counter electrode forms operation and stacked sealing seals with substrate 471 on negative electrode 461 of negative electrode 461.

Light-emitting component forms operation is by at recess opening 444, promptly forms hole injection layer 452 and luminescent layer 453 on the pixel electrode 431 and forms light-emitting component 451, and hole injection layer forms operation and luminescent layer forms operation so have.And hole injection layer forms the first ejection operation that operation has ejection formation hole injection layer 452 usefulness fluent materials on each pixel electrode 431; With dry first drying process that forms hole injection layer 452 of the fluent material that will be ejected.Luminescent layer formation operation has in addition, and ejection forms the second ejection operation of luminescent layer 453 usefulness fluent materials on hole injection layer 452; With dry second drying process that forms luminescent layer 453 of the fluent material that will be ejected.Wherein luminescent layer 453, and forms by the material corresponding in advance as mentioned above three layers with red, green, blue three looks, so described second spray operation and form by three operations that spray three kinds of materials respectively.

This light-emitting component forms in the operation, and first ejection operation in hole injection layer formation operation and luminescent layer form second in the operation and spray in the operation, can adopt above-mentioned droplet ejection apparatus IJ.

And as the device (electro-optical device) that the present invention relates to, except that above-mentioned, can also be used for PDP (plasma display panel) or by making electric current flowing through the small size film that on substrate, forms abreast, produce electronics and emit the surface conductive type electronics of phenomenon and emit among the element etc. to utilize with face.

Figure 24 is the figure of the another kind of execution mode of expression liquid crystal indicator.

Liquid crystal indicator shown in Figure 24 (electro-optical device) 901 roughlly speaking has color liquid crystal plate (electrooptical plate) 902 and the circuit substrate 903 that is connected with liquid crystal board 902.And on liquid crystal board 902, also be provided with lighting device such as backlight and other auxiliary devices in case of necessity.

Liquid crystal board 902 has with encapsulant 904 bonding a pair of substrate 905a and substrate 905b, liquid crystal is enclosed in the gap that forms between these substrates 905a and the substrate 905b, promptly among the cell gap.These substrates 905a and substrate 905b be generally by translucent material, for example formation such as glass, synthetic resin.On the outer surface of substrate 905a and substrate 905b, be pasted with Polarizer 906a and another piece Polarizer.In addition, in Figure 24, the diagram of another piece Polarizer is omitted.

And on the inner surface of substrate 905a, be formed with electrode 907a, on the inner surface of substrate 905b, be formed with electrode 907b.These electrodes 907a, 907b are formed with band shape or literal, numeral or other suitable pattern forms.And these electrodes 907a, 907b, indium tin oxide) etc. for example can (Indium TinOxide: translucent material be formed by ITO.Substrate 905a has the extension that stretches out with respect to substrate 905b, is formed with a plurality of binding posts 908 on this extension.When these binding posts 908 form electrode 907a on substrate 905a and electrode 907a form simultaneously.Therefore, these binding posts 908 for example can form with ITO.On these binding posts 908, contain part that self-electrode 907a one extends and be connected to part on the electrode 907b by the conductive material (not shown).

On circuit substrate 903, institute allocation place is equipped with the semiconductor element of using as liquid crystal drive IC 900 on wiring substrate 909.Though wherein omitted diagram, also can institute allocation place installation resistance, capacitor and other chip elements on the position in addition, semiconductor element 900 positions be installed.Wiring substrate 909 can adopt for example polyimides etc. is had the metal film patternizations such as Cu that form on the flexible base substrate 911, forms the mode of Wiring pattern 912 and makes.

In the present embodiment, electrode 907a, 907b and the Wiring pattern 912 in the circuit substrate 903 in the liquid crystal board 902 can adopt the manufacture method of above-mentioned device to form.

According to the liquid crystal indicator of present embodiment, can obtain to have eliminated the uneven high-quality liquid crystal indicator of electrical characteristics.

In addition, though above-mentioned example is the passive liquid crystal board, also can make the active array type liquid crystal board.That is to say, on a substrate, form thin-film transistor (TFT), and form pixel electrode with regard to each TFT.And utilize ink-jet technology formation to be electrically connected distribution (gate wirings and source distribution) with each TFT as described above.On to substrate, form counter electrode etc. on the other hand.The present invention also can be applicable on this active array type liquid crystal board.

And as the device (electro-optical device) that the present invention relates to, except that above-mentioned, can also be applicable to PDP (plasma display panel) and by making electric current flowing through the small size film that on substrate, forms abreast, produce electronics and emit the surface conductive type electronics of phenomenon and emit among the element etc. to utilize with face.

(electronic instrument)

The instantiation of electronic instrument of the present invention below is described.

Figure 25 A is the stereogram of a kind of mobile phone example of expression.In Figure 25 A, symbol 600 expression mobile phone main bodys, symbol 601 expressions have the liquid crystal display part of above-mentioned execution mode liquid crystal indicator.

Figure 25 B is the stereogram of one of portable information processing devices such as a kind of word processor of expression and personal computer example.In Figure 25 B, symbol 700 expression information processors, input parts such as symbol 701 expression keyboards, the main body of symbol 703 expression processors, symbol 702 expressions have the liquid crystal display part of above-mentioned execution mode liquid crystal indicator.

Figure 25 C is the stereogram of one of a kind of Wristwatch-type electronic instrument of expression example.In Figure 25 C, symbol 800 expression apparatus subjects, symbol 801 expressions have the liquid crystal display part of above-mentioned execution mode liquid crystal indicator.

Electronic instrument shown in Figure 25 A～Figure 25 C, owing to have the liquid crystal indicator of above-mentioned execution mode, so can obtain high quality and performance.

In addition, though the electronic instrument of present embodiment has liquid-crystal apparatus, also can make the electronic instrument of other electro-optical devices such as having organic electroluminescence display device and method of manufacturing same, plasm display device.

Illustrate that below the pattern that will adopt pattern formation method of the present invention to form is applicable to the example on the antenna circuit.

Figure 26 is the non-contact type cassette medium that the expression present embodiment relates to, non-contact type cassette medium 400, its structure is in the basket that is made of cassette matrix 402 and cassette cover plate 418, in keep semiconductor integrated circuit chip 408 and antenna circuit 412, at least a combination supply capability that can combine with electromagnetic wave or electrostatic capacitance from not shown external signal receiver or carry out one of Data Receiving side.

In the present embodiment, above-mentioned antenna circuit 412 can form with pattern formation method of the present invention.Therefore, the miniaturization or the graph thinning of above-mentioned antenna circuit 412 be can realize, high quality and performance obtained.

Though more than be with reference to description of drawings the preferred implementation that the present invention relates to, the present invention is not limited to these examples certainly.The different shape of the various component parts shown in the above-mentioned example and combination etc. only are a kind of illustrations, can make various changes according to designing requirement in the scope that does not exceed main points of the present invention.

Claims (22)

1, a kind of pattern formation method, configuration feature liquid on substrate with zone of distinguishing by the cofferdam and form decide pattern, it is characterized in that, comprising:

On described substrate, form the operation in described cofferdam, make the zone of distinguishing by described cofferdam comprise width than the little second area of the liquid-drop diameter of described functional liquid and with this second area in abutting connection with and the width first area bigger than the liquid-drop diameter of described functional liquid; With

Adopt drop ejection method, the operation of the described functional liquid of ejection on described first area and described second area.

2, pattern formation method according to claim 1 is characterized in that, the width of described first area be described second area width 110～500%.

3, pattern formation method according to claim 1 is characterized in that, described first area forms in the part of intersecting with other patterns.

4, pattern formation method according to claim 1 is characterized in that, described second area forms in the part of intersecting with other patterns.

5, pattern formation method according to claim 1 is characterized in that, described functional liquid contains electrically conductive microparticle.

6, a kind of manufacture method of the device that forms pattern and constitute on substrate is characterized in that, adopts the described pattern of claim 1 formation method to form described pattern on described substrate.

7, the manufacture method of device according to claim 6 is characterized in that, described pattern constitutes a part that is set at the switch element on the described substrate.

8, a kind of manufacture method of active matrix type substrate is characterized in that, has:

Form first operation of gate wirings at substrate;

On described gate wirings, form second operation of gate insulating film;

The 3rd operation by means of described gate insulating film stacked semiconductor layer;

On described gate insulator, form the 4th operation of source electrode and drain electrode;

The 5th operation of configuration insulating material on described source electrode and described drain electrode; With

Form the 6th operation of the pixel electrode that is electrically connected with described source electrode;

Wherein, at least one operation of described first operation, described the 4th operation and described the 6th operation, adopt the described pattern of claim 1 formation method at least.

9, a kind of pattern formation method, adopt drop ejection method on substrate, to spray functional liquid and form decide pattern, it is characterized in that, comprising:

On described substrate, form the cofferdam, circle in the air that the fabric width zone of the big width of diameter is connected with the narrow zone with width narrower than this fabric width zone and the operation that disposes so that have than described functional liquid; With

At the described functional liquid of described fabric width zone ejection, make described functional liquid flow into described narrow zone, by only in the operation of described fabric width zone and described the described functional liquid of narrow area configurations.

10, pattern formation method according to claim 9 is characterized in that, as the described functional liquid of ejection on the part in described fabric width zone and described fabric width zone and the overlapping overlapping region of the prolongation in described narrow zone.

11, pattern formation method according to claim 9, it is characterized in that, surround as after the part in described fabric width zone and described fabric width zone and the overlapping overlapping region of the prolongation in described narrow zone the described functional liquid of ejection on described overlapping region at the described functional liquid of ejection.

12, pattern formation method according to claim 9 is characterized in that, described functional liquid contains electrically conductive microparticle.

13, a kind of manufacture method of the device that forms pattern and constitute on substrate is characterized in that, adopts the described pattern of claim 9 formation method to form described pattern on described substrate.

14, the manufacture method of device according to claim 13 is characterized in that, described pattern constitutes a part that is set at the switch element on the described substrate.

15, a kind of manufacture method of active matrix type substrate is characterized in that, has:

Form first operation of gate wirings at substrate;

On described gate wirings, form second operation of gate insulating film;

The 3rd operation by means of described gate insulating film stacked semiconductor layer;

On described gate insulator, form the 4th operation of source electrode and drain electrode;

The 5th operation of configuration insulating material on described source electrode and described drain electrode; With

Form the 6th operation of the pixel electrode that is electrically connected with described source electrode;

Wherein, at least one operation of described first operation, described the 4th operation and described the 6th operation, adopt the described pattern of claim 9 formation method at least.

16, a kind of pattern formation method, adopt drop ejection method on substrate, to spray functional liquid and form decide pattern, it is characterized in that, comprising:

On described substrate, form the cofferdam, circle in the air that a narrow zone of the little width of diameter is connected and the operation that disposes with having than described functional liquid so that have than the circle in the air fabric width zone of the big width of diameter of described functional liquid; With

By at the described functional liquid of described fabric width zone ejection, make described functional liquid flow into described narrow zone, in the operation of described fabric width zone and described the described functional liquid of narrow area configurations.

17, pattern formation method according to claim 16 is characterized in that, as the described functional liquid of ejection on the part in described fabric width zone and described fabric width zone and the overlapping overlapping region of the prolongation in described narrow zone.

18, pattern formation method according to claim 16, it is characterized in that, surround as after the part in described fabric width zone and described fabric width zone and the overlapping overlapping region of the prolongation in described narrow zone the described functional liquid of ejection on described overlapping region at the described functional liquid of ejection.

19, pattern formation method according to claim 16 is characterized in that, described functional liquid contains electrically conductive microparticle.

20, a kind of manufacture method of the device that forms pattern and constitute on substrate is characterized in that, adopts the described pattern of claim 16 formation method to form described pattern on described substrate.

21, the manufacture method of device according to claim 20 is characterized in that, described pattern constitutes a part that is set at the switch element on the described substrate.

22, a kind of manufacture method of active matrix type substrate is characterized in that, has:

Form first operation of gate wirings at substrate;

On described gate wirings, form second operation of gate insulating film;

The 3rd operation by means of described gate insulating film stacked semiconductor layer;

On described gate insulator, form the 4th operation of source electrode and drain electrode;

The 5th operation of configuration insulating material on described source electrode and described drain electrode; With

Form the 6th operation of the pixel electrode that is electrically connected with described source electrode;

Wherein, at least one operation of described first operation, described the 4th operation and described the 6th operation, adopt the described pattern of claim 16 formation method at least.

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