WO2004023541A1 - パターン形成基材およびパターン形成方法 - Google Patents
パターン形成基材およびパターン形成方法 Download PDFInfo
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- WO2004023541A1 WO2004023541A1 PCT/JP2003/007170 JP0307170W WO2004023541A1 WO 2004023541 A1 WO2004023541 A1 WO 2004023541A1 JP 0307170 W JP0307170 W JP 0307170W WO 2004023541 A1 WO2004023541 A1 WO 2004023541A1
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- Prior art keywords
- droplet
- region
- contact angle
- pattern
- pattern forming
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00436—Shaping materials, i.e. techniques for structuring the substrate or the layers on the substrate
- B81C1/00444—Surface micromachining, i.e. structuring layers on the substrate
- B81C1/0046—Surface micromachining, i.e. structuring layers on the substrate using stamping, e.g. imprinting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1606—Coating the nozzle area or the ink chamber
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1241—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by ink-jet printing or drawing by dispensing
Definitions
- the present invention relates to a pattern forming base material and a pattern forming method in which a predetermined pattern is formed by discharging droplets onto a target surface.
- wiring patterns of circuit boards have been formed by an ink jet technique.
- the wiring pattern can be formed directly on the substrate.
- the vacuum deposition ⁇ photolithography ⁇ etching ⁇ resist stripping process was performed. Costly processes can be omitted, and as a result, a circuit board can be produced at low cost.
- a fluid ink (droplets) containing a wiring material is ejected and landed at a predetermined position on a substrate to form a wiring pattern.
- the landed droplets may be excessively spread or separated due to the characteristics of the substrate surface. For this reason, there arises a problem that a desired wiring pattern cannot be obtained.
- the surface of a substrate is modified in advance so that a region that can be a wiring pattern has affinity with the droplet and another region has affinity with the droplet.
- the droplets are ejected to a region (pattern forming region) having an affinity for the droplets on the substrate to form a wiring pattern.
- the region other than the pattern formation region is a region having incompatibility with the droplet, the droplet landed on the pattern formation region on the substrate does not spread beyond the pattern formation region.
- the droplets are landed on the pattern formation area so that the landed droplets do not separate from each other so that the droplets partially overlap each other. This prevents droplets that have landed on the substrate from being separated.
- the droplet when the droplet lands on the substrate, the droplet scatters and sometimes adheres to an area other than the landing position. Since it is necessary to drop over the entire area of the pattern to be formed, it is necessary to drop also near the area where splashing is not allowed, and there is a possibility that the scattered wiring material may adhere to the area where it should not adhere. is there. For example, if a droplet adheres to a channel portion during formation of a source / drain electrode of a TFT, a problem arises in that a desired TFT performance cannot be obtained. That is, the yield of TFT is reduced.
- the present invention has been made in view of the above problems, and an object of the present invention is to prevent a droplet from adhering to a region where the droplet should not adhere, thereby forming a wiring pattern having desired characteristics.
- An object of the present invention is to provide a pattern forming base material and a pattern forming method that can be formed.
- a contact angle when the droplet contacts the target surface is reduced.
- a first region having a first contact angle and a second region adjacent to the first region and having a second contact angle smaller than the first contact angle are formed on the target surface, and the second region is The surface treatment is performed so that when the droplet lands, the droplet moves in a predetermined direction.
- the landing position of the droplet can be set to a position farther from the normal landing position.
- the normal landing position indicates a position where the droplet can move in all directions of the second area when the droplet lands. This makes it possible to set the landing position of the droplet at a position distant from the region when there is an area where the droplet should not adhere near the normal landing position. It is possible to prevent the droplet from attaching to a region where the droplet should not adhere.
- the width of the landed droplet in the direction of movement of the droplet in the second region is defined as a first line width L i
- the width of the end in the direction opposite to the direction of movement of the droplet in the second region is defined as Li.
- the second line width L 2 the first contact angle of the droplet in the first region is ⁇
- the second contact angle of the droplet in the second region is ⁇ 2
- the droplet diameter is D
- the first line width and the second line width are set so as to satisfy the above equation (1).
- the landed droplets can be moved in a predetermined direction, that is, from the second line width side region of the second region to the first line width side region.
- the line width at the landing position of the droplet is defined so as to satisfy the expression (1), even if the line is located away from the area where the droplet should not adhere, it can be set as the landing position of the droplet. Therefore, it is possible to sufficiently form the wiring, so that the droplet does not adhere to the region where the droplet should not adhere, so that the characteristics of the pattern to be formed are not deteriorated. The yield of pattern formation can be improved.
- the contact angle of the landed droplet with respect to the droplet in the first region is set to the first contact angle 0, and the contact angle of the landed droplet with respect to the droplet in one region in the second region is set to the second contact angle 0 2 .
- the contact angle of the region to the droplet is the third contact angle ⁇ 3 .
- each contact angle in each region is set so as to satisfy the expression (2), the droplet landed so as to straddle the three regions without changing the line width of the second region. It can be moved in a predetermined direction. For example, if the second contact angle 6 2 is smaller than the third contact angle theta 3, in the second area, the landed droplets second contact angle theta than the area of the third contact angle theta 3 Move a lot to the area 2 side.
- the third contact angle of 0 3 is the first contact angle ⁇ of the first area! If they are the same size as the, the droplets will be unto bullet in the area of the third contact angle theta 3, moves only in the second contact angle 0 2 of the region side.
- the pattern forming method of the present invention is characterized by discharging droplets onto the pattern forming substrate. According to the above configuration, it is possible to control the moving direction of the droplet landed on the pattern forming base material, so that the position away from the region where the droplet should not adhere is determined as the landing position of the droplet. Can be set to Therefore, it is possible to prevent a problem caused by the liquid droplets adhering to a region where they should not adhere, for example, a decrease in the yield of the wiring pattern.
- a continuous pattern may be formed by connecting discretely attached droplets on the target surface.
- the number of droplets to be discharged can be minimized, so that the tact time can be reduced and the mechanism for discharging the droplets can have a longer life.
- An ink jet head may be used for discharging the droplet.
- a general-purpose ink jet head used for a printer or the like can be used as a mechanism for discharging droplets, so that an apparatus for pattern formation can be manufactured at low cost.
- the first region and the second region may be formed substantially flat.
- substantially flat means a state in which the step between the first region and the second region is extremely small as compared with the thickness of the formed pattern. By doing so, it is not necessary to form a bank in order to clarify the difference in affinity between the first region and the second region with respect to the droplet, so that the number of pattern formation steps can be reduced.
- the droplet may include conductive particles.
- FIG. 1A is a side view showing a state immediately before a droplet lands on a pattern forming substrate.
- FIG. 1 (b) is a plan view showing a state immediately after the droplet lands on the pattern forming substrate.
- FIG. 2 (a) is a diagram for explaining the water repellency of a droplet.
- FIG. 2B is a diagram illustrating the hydrophilicity of the droplet.
- FIG. 3 is a schematic perspective view of a pattern forming apparatus applied to the pattern forming method of the present invention.
- 4 (a) to 4 (d) are views showing steps for forming a hydrophilic region and a water-repellent region on a substrate.
- FIGS. 5 (a) and 5 (b) show one step of a TFT manufacturing process using the pattern-formed base material shown in FIG. 1, FIG. 5 (a) is a plan view, and FIG. 5 (b) is FIG. FIG. 3 is a sectional view taken along line AA ′ of FIG.
- FIG. 6 (a) and 6 (b) show one step of the TFT manufacturing process using the pattern-formed substrate shown in FIG. 1, FIG. 6 (a) is a plan view, and FIG. 6 (b) is FIG. (A) is a cross-sectional view taken along line AA.
- FIG. 7 (a) and 7 (b) show one step of a TFT manufacturing process using the pattern-formed substrate shown in FIG. 1,
- FIG. 7 (a) is a plan view
- FIG. 7 (b) is FIG. )
- FIGS. 8 (a) and (b) show one step of the TFT manufacturing process using the pattern-formed substrate shown in FIG. 1
- FIG. 8 (a) is a plan view
- FIG. 8 (b) is FIG. 8 (a).
- FIG. 3 is a sectional view taken along line AA ′ of FIG.
- FIG. 9 (a) and 9 (b) show one step of the TFT manufacturing process using the pattern-formed substrate shown in FIG. 1, FIG. 9 (a) is a plan view, and FIG. 9 (b) is FIG. 9 (a).
- FIG. 3 is a sectional view taken along line AA ′ of FIG.
- FIGS. 10 (a) and (b) show one step of a TFT manufacturing process using the pattern-formed substrate shown in FIG. 1, FIG. 10 (a) is a plan view, and FIG. 10 (b) is FIG. FIG. 2 is a sectional view taken along line AA ′ of FIG.
- FIGS. 11A to 11D are diagrams showing examples of the shape of the second region formed on the pattern forming substrate.
- FIG. 12 is a diagram showing another example of the shape of the second region formed on the pattern forming base material.
- FIG. 13 is a diagram showing still another example of the shape of the second region formed on the pattern forming substrate.
- FIG. 14 is a plan view of another pattern forming substrate of the present invention.
- FIGS. 15 (a) and (b) show one step of the TFT manufacturing process using the pattern-formed substrate shown in FIG. 14, FIG. 15 (a) is a plan view, and FIG. 15 (b) is a drawing.
- FIG. 15 (a) is a sectional view taken along line BB ′.
- Figures 16 (a) and (b) show the TFs using the patterned substrate shown in Figure 14.
- Fig. 16 (a) is a plan view
- Fig. 16 (b) is a figure.
- FIG. 16 (a) is a sectional view taken along line BB ′.
- FIGS. 17 (a) and (b) show one step of the TFT manufacturing process using the pattern-formed substrate shown in FIG. 14,
- FIG. 17 (a) is a plan view
- FIG. 17 (b) is a figure.
- Fig. 17 (a) is a sectional view taken along the line BB, taken along the line.
- FIGS. 18 (a) and (b) show one step of the TFT manufacturing process using the patterned substrate shown in FIG. 14, FIG. 18 (a) is a plan view, and FIG. 18 (b) is a figure.
- FIG. 18 (a) is a sectional view taken along line BB ′.
- FIGS. 19 (a) and (b) show TFs using the patterned substrate shown in FIG.
- Fig. 19 (a) is a plan view
- Fig. 19 (b) is a figure.
- FIG. 19 (a) is a sectional view taken along line BB ′.
- the pattern forming apparatus includes, as shown in FIG. 3, a stage 12 on which a substrate 11 as a pattern forming base material having a pattern forming target surface is placed. On the stage 12, an ink jet head 13 and an ink jet head as a droplet discharge means for discharging a fluid ink (droplets) containing a wiring material onto the substrate 11. There are provided a y-direction drive unit 14 for moving the node 13 in the y direction and an X-direction drive unit 15 for moving the node 13 in the X direction.
- the above-mentioned pattern forming apparatus has a droplet on the inkjet head 13.
- a device control unit 17 for performing the operation is provided.
- a liquid pipe 18 is provided between the inkjet head 13 and the droplet supply system 16.
- the droplet supply system 16 supplies droplets to the inkjet head 13. Supply control is performed.
- a signal cable (not shown) is provided between the ink jet head 13, the y-direction drive unit 14, and the X-direction drive unit 15 and the device control unit unit 17.
- the apparatus control cut 17 controls the ejection of the droplets from the ink head 13 and the drive control of the y-direction drive unit 14 and the X-direction drive unit 15.
- the wiring pattern information (application position information) from the device control unit 17 to the substrate 11 is linked with the y-direction drive unit 14 and the X-direction drive unit 15 to the ink jet head 1.
- the ejection information is input to the dry paper (not shown) of No. 3, and the target amount of droplet is supplied to the target position. This makes it possible to drop liquid droplets on the entire area of the substrate 11.
- the ink jet head 13 uses a piezoelectric element that uses a piezoelectric element that deforms when a voltage is applied and instantaneously increases the liquid pressure in the ink chamber to push out the liquid (droplets) from the nozzles.
- a thermal ink jet head is used to generate air bubbles in the liquid and extrude the liquid by a heater attached to the head or the head. Regardless of the type of ink jet head, the voltage applied to the piezoelectric element and heater is Thus, the diameter of the discharged droplet can be adjusted.
- a driving voltage waveform is obtained by using a piezo-drive type ink jet head having a plurality of nozzles having a diameter of 55 ⁇ m as the ink jet head 13. By changing the diameter, the diameter of the discharged droplet is changed from 50 m to 75 ⁇ m.
- the target surface of the pattern forming surface of the substrate 11 is shown in FIG. 1 (a) (b) As shown in (1), a droplet 8 and a hydrophilic line (second region) 6 showing lyophilicity, and a droplet 8 and a water-repellent region (first region) 7 showing lyophobicity are formed.
- FIG. 1 (a) is a side view showing a state before the droplet 8 lands on the substrate 11 and FIG. 1 (b) shows a state immediately after the droplet 8 lands on the substrate 11 It is a top view. Since the hydrophilic line 6 and the water-repellent region 7 are obtained by performing a chemical treatment as described later, they are almost flat on the substrate 11. For this reason, the number of manufacturing steps can be reduced as compared with the case where a puncture is formed and a wiring pattern is formed as in the conventional case.
- FIG. 2 (a) shows the contact angle (first contact angle) 01 of the water-repellent region 7 with respect to the droplet
- FIG. 2 (b) shows the contact angle of the hydrophilic line 6 with the droplet.
- the contact angle (second contact angle) ⁇ 2 is shown.
- the water-repellent region 7 is a region having a larger contact angle with the droplet than the hydrophilic line 6 and a property of low wettability with the droplet, that is, a characteristic having a low affinity with the droplet.
- the hydrophilic line 6 is a region having a smaller contact angle with the droplet than the water-repellent region 7 and having a high wettability with the droplet, that is, a region having a high affinity with the droplet. Furthermore, if the characteristics of the water-repellent region 7 and the hydrophilic line 6 are clarified, the water-repellent region 7 is a region adjusted to exhibit liquid repellency to repel droplets. It is preferable that the region is adjusted so as to exhibit lyophilicity that is compatible with the droplet.
- hydrophilic line 6 hydrophilic line 6
- water-repellent region 7 a lyophobic region
- the present invention is based on the premise that the hydrophilic line 6 and the water-repellent region 7 are provided on the substrate 11, and the shape of the hydrophilic line 6 is set so as to control the spreading direction of the droplet on the hydrophilic line 6. ing.
- the hydrophilic line 6 has a line width on one end side (the side in the direction of arrow C in the figure) of the droplet 8 landed on the substrate 11.
- L i the first line width
- L 2 the second line width
- L x D / ⁇ 1 + 2 (cos 0 2 — cos) ⁇
- the dropped droplet 8 As described above, when the pattern is formed by dropping the droplet 8 on the hydrophilic line 6 and the water-repellent region 7, that is, the substrate 11 on which the water-repellent pattern is formed, the dropped droplet 8 There are two cases: one is deformed in a pattern and the other is not. Therefore, since the droplet 8 after landing morphs into a lower energy state, the energy change is calculated, and the diameter D of the droplet 8 is controlled in advance with respect to the line width L of the hydrophilic line 6. Thereby, good pattern formation can be performed.
- the energy ⁇ W consumed by the deformation of the droplet 8 is
- the second contact angle 0 2 is 0 °, when the first contact angle ⁇ is 9 0 °, D
- the wiring can be formed properly. In other words, in this case, wiring having a line width of 1Z3 of the droplet diameter can be formed.
- the second contact angle 0 2 is 0 °, when the first contact angle 0 is 1 8 0 °, D
- the wiring can be formed properly. In other words, in this case, it is possible to form wiring having a line width of 1/5 of the droplet diameter.
- the landed droplet will be D / ⁇ 1 + 2 (cos ⁇ 2 -! cos ⁇ ) ⁇ or more to move a line width of 1 ⁇ side is set to the size, D / ⁇ l + 2 ( cose ⁇ cose ⁇ following the set line width L 2 side magnitude It does not move, that is, the landed droplet can be moved only in one direction.
- a pattern forming method using the pattern-forming base material having the above configuration will be described below with reference to FIGS. 5 (a) and 5 (b) to 10 (a) and 10 (b).
- a substrate having a gate wiring pattern 23, a gate insulator 22 and a-Si / n + semiconductor layer 24 formed on a glass substrate 21 Use 1.
- FIG. 4 (a) is formed by applying and drying a wettability changing layer 2 made of a silane coupling agent or the like on the substrate 1 by spin coating or the like.
- a wettability changing layer 2 made of a silane coupling agent or the like
- ZONYLFSN trade name, manufactured by DuPont
- ZONYLFSN which is a fluorine-based nonionic surfactant
- a mask made of chrome UV exposure is performed through a photomask 3 on which a photocatalyst layer 4 made of titanium oxide or the like is formed.
- the photocatalyst layer 5 is formed by applying a mixture of a titanium dioxide fine particle dispersion and ethanol using a spin coat method and then performing a heat treatment at 150 ° C. Exposure was carried out using a mercury lamp (wavelength: 365 nm) at an illuminance of 70 mWZ cm 2 for 2 minutes.
- FIG. 4 (c) and FIG. 4 (d) only the UV-exposed portion has improved wettability, and a hydrophilic pattern is formed.
- a source region 25 and a drain region 26 are formed as a hydrophilic pattern.
- the pattern width of the narrowest part of the source region 25 and the drain region 26 is 20; / m.
- the wiring material is dripped onto the substrate 1 on which the water-repellent pattern is formed by using an ink jet method to drop the source 27 and the source.
- a drain wiring is formed.
- the wiring material of the droplet 8 is a material in which Ag fine particles are dispersed in a mixed solvent of water, ethanol and diethylene glycol, and the viscosity is adjusted to about 10 cP in advance. I have.
- the first contact angle ⁇ 1 of the droplet in the water-repellent region 7 is 80 °
- the second contact angle 02 of the droplet in the hydrophilic line 6 is 10 °. .
- a droplet 27 serving as a liquid wiring material is ejected onto the substrate 1 on which the water-repellent pattern is formed by using the above-described pattern forming apparatus.
- the landing position of the droplet 27 was set at the portion where the pattern width was widened from the narrowest portion.
- the source region 25 and the drain region at the landing position of the droplet 27 26 has a line width relationship as shown in FIG. 1 (b), and each line width is set so as to satisfy the above equation (1).
- the droplet 27 When the droplet 27 is dropped on the pattern portion with the above-described droplet size, the droplet 27 flows and spreads in the direction in which the pattern spreads as shown in FIGS. 8 (a) and 8 (b). Then, a part of the source region 25 is made the source wiring 29, and a part of the drain region 26 is made the drain wiring 28. At this time, the droplet 27 does not diffuse to the narrowest part of the pattern width.
- the droplet 27 can be dropped quantitatively without dropping near the channel of the TFT (near the semiconductor layer 24). As a result, it is possible to prevent the yield from being reduced due to the adhesion of the metal material contained in the liquid droplet 27 in the channel portion.
- the substrate 1 in a state where the source region 25 and the drain region 26 are filled with the wiring material is dried and fired at 200 ° C., as shown in FIGS. 10 (a) and (b). A large source wiring and drain wiring are formed.
- a continuous pattern (source wiring and drain wiring) is formed on the source region 25 and the drain region 26 by connecting discretely attached droplets. This makes it possible to minimize the number of ejected droplets, thereby reducing the tact time and extending the life of the mechanism for ejecting droplets.
- the pattern shape of the hydrophilic line 6 where the droplet is dropped As shown in Fig. 11 (a) and (b), the line width (pattern width) has a continuously changing shape, and the line widths at both ends where the droplet has landed are respectively set. If L 2 is 35 ⁇ , L 2 is 20 m.
- the diffusion results for the droplet diameter and line width in this case are as shown in Table 1 below.
- the pattern width is changed continuously as shown in FIGS. 11 (a) and (b), but the pattern width is changed stepwise as shown in FIG. 11 (c). It may be changed.
- the pattern may be bent as shown in FIG. 11 (d).
- FIGS. 11 (c) and (d) can obtain the same effects as in FIGS. 11 (a) and (b).
- line width (line width) L 2 is the
- the contact angle when the droplet contacts the target surface on the substrate 11 is the first region (water-repellent region 7) having the first contact angle, and is adjacent to the water-repellent region 7.
- a second area (hydrophilic line 6) having a second contact angle smaller than the first contact angle is formed on the target surface, and the hydrophilic line 6, when the droplet 8 lands, Since the surface treatment is performed so that 8 moves in a predetermined direction, the following effects can be obtained.
- the landing position of the droplet 8 can be set at a position farther from the normal landing position.
- the normal landing position indicates a position where the droplet 8 can move in all directions of the hydrophilic line 6 when the droplet 8 lands.
- the width of the landed droplet 8 on the hydrophilic line 6 in the moving direction side of the droplet 8 in the hydrophilic line 6 is defined as a first line width L i, and in the second region, The width of the end opposite to the moving direction of the droplet is the second line width L 2 , the first contact angle of the droplet in the first region is 0, and the second contact angle of the droplet in the second region is 0 2
- the droplet diameter is D
- Sea urchin may be set the first line width E and a second line width L 2.
- the first line width and the second line width are set so as to satisfy the above equation (1).
- the landed droplets can be moved in a predetermined direction, that is, from the region of the hydrophilic line 6 on the second line width side to the region on the first line width side.
- the line width at the landing position of the droplet 8 is defined so as to satisfy the expression (1), a position away from the area where the droplet 8 should not adhere is set as the landing position of the droplet 8. Therefore, it is possible to sufficiently form the wiring, so that the droplet does not adhere to the region where the droplet 8 should not adhere, so that the characteristics of the wiring pattern to be formed are degraded. Therefore, the yield of wiring pattern formation can be improved.
- the water-repellent region 7 where the contact angle of the droplet is the first region of the first contact angle.
- the hydrophilic line 6a where the contact angle of the droplet is the second region of the second contact angle, and the third region of the third contact angle where the contact angle of the droplet is larger than the second contact angle. All the hydrophilic lines 6 b are formed.
- second region of the second contact angle 0 2 is the higher most wettability to the liquid droplets.
- the line width of each of the hydrophilic line 6a and the hydrophilic line 6b is L, and the diameter of the droplet to be dropped is D.
- the left side of the expression (2) defines the movement of the liquid droplet between the water-repellent region 7 and the hydrophilic line 6b. That is, if the third contact angle and the second contact angle are adjusted so as to satisfy the left side, the droplet does not spread to the hydrophilic line 6b. However, if the relationship between the water-repellent region 7 and the hydrophilic line 6b also becomes the relationship as shown on the right side of the above equation (2), the droplet spreads to the hydrophilic line 6b. Therefore, if each contact angle is adjusted so as to satisfy the above expression (2), the liquid droplets landed on the pattern forming base material will spread only to the hydrophilic line 6a. It is not necessary to change the width of the hydrophilic line 6 as shown in FIG. However, the droplet 8 needs to land so that the center is located substantially at the boundary between the hydrophilic line 6a and the hydrophilic line 6b.
- the TFT liquid crystal display panel is The method of forming the source and drain wiring patterns of the tunnel will be described below.
- a substrate on which a gate wiring pattern 33, a gate insulator 32, and a-Si / n + semiconductor layer 34 are formed on a glass substrate 31 Use 1.
- a water-repellent patterning process for a pattern to be a source / drain wiring is performed in the same manner as in the first embodiment.
- the exposure conditions were as follows: the area far from the TFT (first exposure area) was exposed for 1 minute at an illuminance of 70 mW / cm 2 using a mercury lamp (wavelength 365 nm), and the area near the TFT (first 2 exposure area) performs exposure for 2 minutes.
- a source region 35 and a drain region 36 as a hydrophilic pattern are formed. The pattern width of each of these regions is 35 / m, which is uniform.
- the source region 35 is the same as the first source region 35 a having high wettability.
- a second source region 35b having a lower wettability than the first source region 35a Similarly to the source region 35, the drain region 36 has a first drain region 36a having high wettability and a second drain region having lower wettability than the first drain region 36a. 3b.
- the first source region 35a and the first drain region 36a have the same wettability, and the second source region 35b and the second drain region 36b have the same wettability.
- a droplet 37 as a wiring material is dropped on the substrate 1 having the water-repellent pattern formed thereon using an ink jet method. Form source and drain wiring. Used here
- the liquid droplet and the ink head device are the same as those described in the first embodiment.
- the first contact angle is 80 °
- the droplet 37 is formed of the hydrophilic region composed of the second source region 35b and the second drain region 36b.
- the third contact angle when dropped on the pattern (the second exposure area) is 45 °
- the droplet 37 is applied to the hydrophilic pattern (first area) composed of the first source area 35a and the first drain area 36a.
- the second contact angle when dropped on the (exposure area) is 10 °.
- a droplet 37 having a discharge droplet diameter of 75 ⁇ m is dropped on the substrate 1 on which the water-repellent pattern is formed, using the above-mentioned ink jet apparatus.
- the liquid droplets landed at a position near the boundary between the first exposure region and the second exposure region.
- the source region 35 and the drain region 36 at the landing position of the droplet 37 have wettability as shown in FIG. 14, that is, the relationship of the contact angle of the droplet 37. (2) is set.
- the droplet 37 becomes the first source region 35a and the first exposure region which are the first exposure region. It flows and diffuses in the direction of the 1 drain region 36 a to form a source wiring 38 and a drain wiring 39, and the second source region 35 b and the second drain region 36 b which are the second exposure regions Does not spread to
- the wiring material can be dropped in a quantitative manner without dropping near the channel of the TFT, so that the yield due to the adhesion of the metal material to the channel portion due to scattering or the like can be reduced. It is possible to prevent the drop.
- the desired source wiring 38 and Drain wiring 39 All areas can be filled with liquid material.
- the substrate 1 on which the wiring material has been dropped is dried and fired at 200 ° C. to complete the source and drain wirings.
- the pattern width is set to be constant and the contact angles at both ends of the landed droplet are set to be different. effective.
- the pattern may be a straight line or a bent shape. The same effect can be obtained even if the branch shape has three or more branches.
- regions water-repellent regions 7, hydrophilic lines 6a, hydrophilic lines 6b) corresponding to wettability are formed on the substrate 11 as a pattern forming substrate. However, droplets land so as to straddle these three regions.
- the contact angle of the water-repellent region 7 with respect to the droplet is defined as the first contact angle ⁇ x , 2 contact angle to the liquid droplets of the hydrophilic line 6 a second contact angle theta, hydrophilic line 6 b of the liquid contact angle to drop the third contact angle theta 3, the hydrophilic line 6 a, 6 wide line width b L, '
- the above-mentioned contact angles may be set so as to satisfy the following expression (2).
- each contact angle in each region is set so as to satisfy the expression (2), the landing is performed across three regions without changing the line width of the hydrophilic lines 6a and 6b.
- the dropped droplet can be moved in a predetermined direction. For example, when the second contact angle 0 2 is smaller than the third contact angle theta 3, in hydrophilic line 6 a, 6 b, the landed droplets than hydrophilic line 6 b side of the third contact angle theta 3 many move to hydrophilic line 6 b of the second contact angle theta 2.
- the third contact angle theta 3 is given the same size as the first contact angle 0 E of the water repellent region 7, the droplets are repelled by the third contact angle 0 3 of the hydrophilic line 6 b, second It will move only to the hydrophilic line 6 a side of the contact angle theta 2.
- the line width at the landing position of the droplet is defined so as to satisfy the expression (2), even if the line is located away from the area where the droplet should not adhere, it can be set as the landing position of the droplet. Therefore, it is possible to form the wiring sufficiently, so that the droplets do not adhere to the area where the droplets should not adhere, so that the characteristics of the formed pattern are not deteriorated. The yield of formation can be improved.
- the liquid wiring material (droplets) used for forming the wiring is obtained by converting Ag fine particles from water, ethanol, and diethylene glycol. Since it was used as a mixture dispersed in a mixed solvent, the lyophilic property was described as hydrophilic, and the lyophobic property was described as water-repellent. Instead, it may be oil-based. In this case, the lyophilicity may be expressed as lipophilicity, and the lyophobic property may be expressed as oleophobic property.
- an example has been described in which an ink jet system using an inkjet head is used as a mechanism for discharging droplets onto the substrate 11 serving as a pattern forming substrate.
- the present invention is not limited to this, and any mechanism may be used as long as it can control the droplet diameter and can discharge.
- the ink jet head is not limited to the piezo type.
- the pattern-forming substrate of the present invention provides a pattern-forming substrate in which a predetermined pattern is formed by discharging a droplet onto a target surface.
- a first region having a first contact angle, a second region having a second contact angle smaller than the first contact angle, and a second region having a second contact angle smaller than the first contact angle are formed on the target surface;
- the two regions have a surface treatment so that the droplet moves in a predetermined direction when the droplet lands.
- the droplet landed in the second area moves in a predetermined direction, and the landing position of the droplet can be set at a position farther from the normal landing position.
- the normal landing position indicates a position where the droplet can move in all directions of the second area when the droplet lands.
- the impact position of the droplet is set at a position away from the area. This makes it possible to prevent the droplet from attaching to a region where the droplet should not adhere.
- the width of the landed droplet in the direction of movement of the droplet in the second region is defined as a first line width L
- the width of the end in the direction opposite to the direction of movement of the droplet in the second region is defined as L.
- the first line width and the second line width are set so as to satisfy the above expression (1). This makes it possible to move the landed droplets in a predetermined direction, that is, from the area on the second line width side of the second area to the area on the first line width side.
- the line width at the landing position of the droplet is defined so as to satisfy the expression (1), even if the line is located away from the area where the droplet should not adhere, it will be set at the landing position of the droplet. Therefore, it is possible to sufficiently form wiring even if the droplets are attached to an area where the droplets should not be attached. Since the characteristics of the pattern to be formed are not degraded because of the elimination, there is an effect that the yield of pattern formation can be improved.
- the contact angle with respect to the droplet in the first region is a first contact angle 01
- the contact angle of the landed droplet with respect to the droplet in one region in the second region is a second contact angle ⁇ 2
- the other side is Assuming that the contact angle with respect to the droplet in the region is the third contact angle ⁇ 3, the width of the second region is the line width L, and the droplet diameter is the droplet diameter D, the following expression (2) is satisfied.
- a position that straddles the three regions of the first region and the second region may be set as a droplet landing position.
- each contact angle in each region is set so as to satisfy the expression (2), the droplet landed so as to straddle the three regions without changing the line width of the second region. It can be moved in a predetermined direction. For example, when the second contact angle ⁇ 2 is smaller than the third contact angle 0 3, the landed droplets in the second region are more likely to be in contact with the second contact angle ⁇ than the third contact angle 03 region. Move a lot to the area 2 side.
- the third contact angle ⁇ 3 is the same size as the first contact angle ⁇ 1 in the first region, the droplet is repelled in the region of the third contact angle ⁇ 3 and the second contact angle ⁇ 2 Will be moved only to the area side of.
- the line width at the landing position of the droplet is defined so as to satisfy the expression (1), even if the line is located away from the area where the droplet should not adhere, it will be set at the landing position of the droplet. It is possible to form wiring sufficiently Therefore, since the droplets do not adhere to the area where the droplets should not adhere, the characteristics of the pattern to be formed are not reduced, and the effect of improving the yield of pattern formation can be improved. Play.
- the pattern forming method of the present invention has a configuration in which droplets are discharged onto the pattern forming substrate.
- the moving direction of the droplet landed on the pattern forming substrate can be controlled, it is possible to set the position distant from the region where the droplet should not adhere as the droplet landing position. it can.
- the pattern forming base material and the pattern forming method of the present invention are in the field of forming a wiring pattern of a circuit board by an ink jet technology, and in particular, improving the yield of the circuit board, extending the life of the ink jet head, and manufacturing cost. It can be suitably used in fields that need to reduce the cost.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Electrodes Of Semiconductors (AREA)
- Thin Film Transistor (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Ink Jet (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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AU2003242211A AU2003242211A1 (en) | 2002-08-30 | 2003-06-05 | Pattern formation substrate and method of pattern formation |
US10/525,901 US7501156B2 (en) | 2002-08-30 | 2003-06-05 | Pattern formation substrate and method for pattern formation |
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JP2002255646A JP4098039B2 (ja) | 2002-08-30 | 2002-08-30 | パターン形成基材およびパターン形成方法 |
JP2002-255646 | 2002-08-30 |
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WO2004023541A1 true WO2004023541A1 (ja) | 2004-03-18 |
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PCT/JP2003/007170 WO2004023541A1 (ja) | 2002-08-30 | 2003-06-05 | パターン形成基材およびパターン形成方法 |
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US (1) | US7501156B2 (ja) |
JP (1) | JP4098039B2 (ja) |
KR (1) | KR100606858B1 (ja) |
CN (1) | CN100353507C (ja) |
AU (1) | AU2003242211A1 (ja) |
TW (1) | TWI243425B (ja) |
WO (1) | WO2004023541A1 (ja) |
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US7119026B2 (en) | 2002-08-30 | 2006-10-10 | Sharp Kabushiki Kaisha | Basic material for patterning and patterning method |
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US8178154B2 (en) | 2010-03-15 | 2012-05-15 | Panasonic Corporation | Method for disposing a component |
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JP6143152B2 (ja) * | 2012-03-21 | 2017-06-07 | 株式会社リコー | 表面処理装置、表面処理方法、パターン形成装置、及び構造体 |
CN108501532B (zh) * | 2018-04-09 | 2020-02-14 | 京东方科技集团股份有限公司 | 喷墨打印头、打印机、打印机的喷嘴组件及其制作方法 |
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- 2003-06-05 AU AU2003242211A patent/AU2003242211A1/en not_active Abandoned
- 2003-06-05 CN CNB038204479A patent/CN100353507C/zh not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
CN100353507C (zh) | 2007-12-05 |
TWI243425B (en) | 2005-11-11 |
KR20050033658A (ko) | 2005-04-12 |
AU2003242211A1 (en) | 2004-03-29 |
JP2004095896A (ja) | 2004-03-25 |
US20050242394A1 (en) | 2005-11-03 |
KR100606858B1 (ko) | 2006-08-01 |
US7501156B2 (en) | 2009-03-10 |
TW200414361A (en) | 2004-08-01 |
JP4098039B2 (ja) | 2008-06-11 |
CN1679152A (zh) | 2005-10-05 |
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