WO2015097976A1 - 表示パネル製造方法 - Google Patents
表示パネル製造方法 Download PDFInfo
- Publication number
- WO2015097976A1 WO2015097976A1 PCT/JP2014/005762 JP2014005762W WO2015097976A1 WO 2015097976 A1 WO2015097976 A1 WO 2015097976A1 JP 2014005762 W JP2014005762 W JP 2014005762W WO 2015097976 A1 WO2015097976 A1 WO 2015097976A1
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- WIPO (PCT)
- Prior art keywords
- substrate
- nozzle
- protective resin
- display panel
- less
- Prior art date
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Classifications
-
- 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
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- 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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/50—Protective arrangements
Definitions
- the present disclosure relates to a method for manufacturing a display panel such as a liquid crystal display panel or an organic EL display panel.
- a display device including a display panel such as a liquid crystal display panel or an organic EL display panel is known.
- This display panel has a rectangular display area in which pixels are arranged in a matrix at the center of a rectangular substrate such as a glass plate, and a portion other than the display area of the substrate (the periphery of the display area and the periphery of the substrate).
- an electronic component for controlling blinking of a pixel or the like is attached to a so-called frame portion.
- a plurality of electrodes are provided on the frame portion on the substrate along the peripheral edge of the substrate, and a plurality of chip-on-films (COF) are provided on the electrodes. They are connected in a line-up state.
- This chip-on-film (COF) is mounted on a flexible film on which electronic components for applying a voltage to each pixel are printed and wired. Further, the electrode and the COF are electrically connected by thermocompression bonding via an anisotropic conductive member (ACF), and are also mechanically attached.
- ACF anisotropic conductive member
- the bonding state between the COF and the electrode (substrate) is protected by linearly applying a resin from the top of the COF to the bonding portion between the linearly arranged electrode and the COF, and solidifying the resin. .
- an application device equipped with a syringe may be used. Specifically, the resin is discharged from the nozzle while moving the nozzle provided at the tip of the syringe relatively along one side of the substrate, and the resin is applied so as to cover the bonding portion between the substrate and the COF. It is.
- the state of the resin put into the syringe for example, the resin application state changes due to the difference in the viscosity of the resin with time, etc., so it is dependent on the operator's intuition to produce a stable and high quality display panel. It is necessary to set conditions.
- so-called narrow frame display panels with a narrow frame width have appeared, and the amount of resin discharged in response to this has decreased. Since the change in the application state becomes large, it is difficult to stabilize the application state of the resin.
- An object is to provide a display panel manufacturing method capable of improving the yield of display panels.
- a display panel manufacturing method includes a display in which a film having wiring is connected to a frame portion between a peripheral edge of a rectangular substrate and a peripheral edge of a display region.
- a display panel manufacturing method for manufacturing a panel in a coating process in which a protective resin that protects a connection portion between the substrate and the film is linearly applied to the side of the frame portion where the film is connected, Into a syringe to which a nozzle having an inner diameter of 20% or more and 30% or less of the width of the frame portion is connected, the protective resin having a viscosity in an environment of 23 degrees Celsius is 4 Pa ⁇ s or more and 6 Pa ⁇ s or less, The substrate and the nozzle so that the relative speed between the substrate and the nozzle is 26 mm / s or more and 28 mm / s or less within 144 hours from the first opening of the container containing the protective resin.
- At least one is moved, and after 144 hours from the first opening of the container containing the protective resin, the substrate and the nozzle so that the relative speed between the substrate and the nozzle is 24 mm / s or more and less than 26 mm / s, and
- the protective resin pressurized by a gas having a pressure of 200 kPa or more and 280 kPa or less is discharged from the nozzle, The discharge of the protective resin is stopped when the position of the nozzle is the second position.
- the protective resin adheres more than necessary to the connection between the substrate and the film or in the vicinity thereof, or necessary Generation
- FIG. 1 is a plan view schematically showing the entire display panel.
- FIG. 2 is a plan view schematically showing corner portions of the display panel.
- FIG. 3 is a cross-sectional view schematically showing a connection state between the film and the frame portion (substrate).
- FIG. 4 is a view showing a mechanism part and a function part of the coating apparatus together with a container in which a protective resin is stored.
- FIG. 5 is a flowchart showing a manufacturing process of a display panel by applying a protective resin.
- FIG. 6 is a diagram showing the results of a coating experiment using a protective resin having an elapsed time of 144 hours or less.
- FIG. 7 is a diagram showing the results of a coating experiment using a protective resin whose elapsed time exceeds 144 hours.
- a display panel manufacturing method is a display panel manufacturing method that manufactures a display panel in which a film having wiring attached to a frame portion between a peripheral edge of a rectangular substrate and a peripheral edge of a display region is connected. And in the application
- At least one of the substrate and the nozzle is set so that the relative speed between the substrate and the nozzle is 26 mm / s or more and 28 mm / s or less. However, after 144 hours (6 days) from the first opening of the container containing the protective resin, the substrate and the nozzle so that the relative speed between the nozzle and the nozzle is 24 mm / s or more and less than 26 mm / s.
- the protective resin pressurized by a gas having a pressure of 200 kPa or more and 280 kPa or less is discharged from the nozzle,
- the nozzle is in the second position, the discharge of the protective resin is stopped.
- the coating state such as the coating amount of the protective resin uniform from the start of the coating of the protective resin to the end of the coating without depending on the operator's intuition such as determining the state of the protective resin.
- FIG. 1 is a plan view schematically showing the entire display panel.
- FIG. 2 is a plan view schematically showing a corner portion of the display panel.
- the display panel 100 controls the light emission amount (or light transmission amount) of each of minute pixels (not shown) arranged in a matrix based on an input signal.
- the display panel 100 further includes a circuit board 105 connected to the plurality of films 103.
- the substrate 101 is a rectangular plate member that serves as a structural basis of the display panel 100.
- substrate 101 is not specifically limited, For example, transparent glass is used.
- the display area 102 is an area where pixels are arranged in a matrix.
- the pixel is a circuit including an organic EL element, a driving transistor, a selection transistor, a capacitor, and the like.
- a data line is arranged for each column of pixels arranged in a matrix, and a scanning line is arranged for each row of pixels.
- a positive power supply line and a negative power supply line are arranged in common for all pixels.
- each of these conductive lines extends to the frame portion 111 outside the display area 102.
- the frame portion 111 is a portion of the substrate 101 sandwiched between the periphery of the substrate 101 and the periphery of the display area 102. On the surface of the frame portion 111, a plurality of electrodes to which data lines, scanning lines, positive power supply lines, and negative power supply lines extending from the display region 102 are respectively connected are arranged.
- the film 103 is a so-called printed wiring film in which a conductive line is provided on the surface of a resin member by printing, and has flexibility (flexibility) that can be bent while maintaining the wiring. is there.
- the film 103 is a so-called chip on film (COF) on which the electronic component 131 is mounted.
- COF chip on film
- the electronic component 131 is not particularly limited. For example, an element that generates a driving voltage supplied to the pixel based on a predetermined signal can be listed.
- FIG. 3 is a cross-sectional view schematically showing a connection state between the film and the frame portion (substrate).
- the film 103 is thermocompression bonded to the frame portion 111 via an anisotropic conductive member 132 (ACF).
- ACF anisotropic conductive member 132
- the anisotropic conductive member 132 is provided at the position of the frame portion 111 facing the wiring provided on the surface of the film 103 by applying a force in the direction sandwiched between the film 103 and the substrate 101. It is a member that can be electrically connected only between the electrodes and that can maintain insulation in the direction intersecting the sandwiched direction.
- the anisotropic conductive member 132 not only ensures electrical continuity, but also mechanically connects the film 103 and the substrate 101.
- the protective resin 104 is applied to the connection portion between the film 103 and the substrate 101 to ensure the airtightness of the connection portion and to protect and strengthen the electrical and mechanical connection by the anisotropic conductive member 132. It is. A method for manufacturing the display panel by applying the protective resin 104 will be described later.
- the circuit board 105 is a component called a so-called printed circuit board.
- the circuit board 105 is a component that mediates electrical connection between the timing controller (T-CON) and the film 103, for example.
- the timing controller is a logic circuit for controlling the lighting timing and the light emission amount (transmission amount) of each pixel arranged in the display area 102.
- circuit board 105 may be a timing controller.
- FIG. 4 is a view showing a mechanism part and a function part of the coating apparatus together with a resin storage container.
- the coating apparatus 200 is an apparatus that can apply the protective resin 104 linearly along one edge of the substrate 101 to the frame portion 111 of the substrate 101 to which the film 103 is connected.
- the nozzle 201, the syringe 202, the moving device 203, the pressurizing device 204, the control device 205, and the table 206 are provided.
- the nozzle 201 is a tubular member for discharging the protective resin 104 with a predetermined thickness, and has an inner diameter of 20% or more and 30% or less of the width w of the frame portion 111 (see FIG. 2). For example, when the width w of the frame portion 111 is 2.5 mm, the nozzle 201 has an inner diameter selected from 0.5 mm to 0.75 mm.
- the syringe 202 is a container that is provided with the nozzle 201 communicating with the tip and temporarily stores the protective resin 104 discharged from the nozzle 201. Further, the pressurized gas supplied from the pressurizing device 204 is supplied to the inside of the syringe 202.
- the moving device 203 is a device that can relatively move the substrate 101 and the nozzle 201 at a constant speed.
- the moving device 203 has a first speed selected from a range in which the relative speed between the substrate 101 and the nozzle 201 is 26 mm / s or more and 28 mm / s or less, and a relative speed between the substrate 101 and the nozzle 201 is 24 mm / s. It is possible to switch at least two speeds of the second speed selected from the range of s or more and less than 26 mm / s.
- the moving device 203 moves the nozzle 201 in one direction together with the syringe 202 with respect to the stationary substrate 101, and the first speed is 27 mm / s and the second speed is 25 mm / s nozzle. 201 and the syringe 202 can be moved.
- the pressurizing device 204 is a device that introduces a gas (air) of a predetermined pressure into the syringe 202 and discharges the protective resin 104 from the nozzle 201 by the pressure of the gas.
- the pressurizing device 204 can supply a gas having a pressure selected from a range of 200 kPa or more and 280 kPa or less.
- the control device 205 has a discharge control unit 251 that controls the discharge of the protective resin 104, a movement control unit 252 that controls the movement of the moving device 203, and the container 300 in which the protective resin 104 is stored from when the container 300 is first opened. It is an apparatus provided with the time measurement part 253 which measures elapsed time.
- the control device 205 is a computer, and the functions of the discharge control unit 251, the movement control unit 252, and the time measurement unit 253 are realized by executing software.
- the table 206 is a member that holds the display panel 100.
- the table 206 can rotate the display panel 100 about the vertical direction as a rotation axis, and can move the display panel 100 in a horizontal plane for alignment.
- FIG. 5 is a flowchart showing a manufacturing process of a display panel by applying a protective resin.
- the operator opens the sealed container 300 in order to put the protective resin 104 into the syringe 202 (S101: opening process).
- the time measuring unit 253 starts measuring time (S102: time measuring step).
- the information indicating that the container 300 is first opened is information indicating the time when the container 300 is first opened.
- the protective resin 104 to be added is a resin having a viscosity of 4 Pa ⁇ s or more and 6 Pa ⁇ s or less in an environment of 23 degrees Celsius.
- the protective resin 104 is a silicone coating material. After being applied, the protective resin 104 spreads to some extent due to viscosity, and reacts with moisture in the air to be cured into a rubber-like elastic body.
- the movement control unit 252 acquires the elapsed time from the time when the container 300 was first opened from the time measurement unit 253, and determines whether or not the elapsed time exceeds 144 hours (S104: elapsed time determination step). ).
- the moving device 203 is set so that the relative speed between the substrate 101 and the nozzle 201 becomes the first speed (for example, 27 mm / s), and the nozzle 201 is operated at the first speed. (S105: First operation step).
- the moving device 203 is set so that the relative speed between the substrate 101 and the nozzle 201 becomes the second speed (for example, 25 mm / s), and the nozzle 201 is operated at the second speed. (S106: Second operation step).
- the discharge control unit 251 controls the pressurizing device 204 to air having a pressure of 200 kPa or more and 280 kPa or less (for example, 260 kPa).
- the protective resin 104 is discharged from the nozzle 201 (S107: discharge start step).
- the discharge controller 251 controls the pressure device 204 to stop the discharge of the protective resin 104 (S108: discharge stop process).
- the protective resin 104 can be applied linearly along the one side of the substrate 101 to the frame portion 111 of the substrate 101. Further, if the protective resin 104 is applied in accordance with the above conditions, the protective resin 104 can be applied with a uniform thickness, and it is possible to suppress the occurrence of rubbing and swelling partially (particularly at the beginning and end of application).
- FIG. 6 is a diagram showing the results of a coating experiment using a protective resin having an elapsed time of 144 hours or less.
- FIG. 7 is a diagram showing the results of a coating experiment using a protective resin whose elapsed time exceeds 144 hours.
- a protective resin 104 having a different elapsed time from the opening of the sealed container 300 for the first time is used, and it is discharged onto the substrate 101 at various combinations with different moving speeds and gas pressures. It is a figure which shows the result of having confirmed the application
- the protective resin 104 when the protective resin 104 is discharged with a gas having a pressure of 200 kPa or more and 280 kPa or less, when the relatively new protective resin 104 having an elapsed time of 144 hours or less is discharged, the substrate 101 and the nozzle 201 If the relative speed is in the range of 26 mm / s or more and 28 mm / s or less, the protective resin 104 is applied more than necessary immediately after the start of application, and the application amount of the protective resin 104 is insufficient immediately after the application ends. It has been found that a good coating state can be obtained without causing end rubbing.
- a defect may occur in the application state of the protective resin 104 under the above conditions, while the relative speed between the substrate 101 and the nozzle 201 is 24 mm. It has been found that a good coating state can be obtained if it is in the range of not less than / s and less than 26 mm / s.
- execution of a program for causing a computer to execute each process included in the display panel manufacturing method also corresponds to the implementation of the present disclosure.
- implementing a recording medium in which the program is recorded also falls under the implementation of the present disclosure.
- the present disclosure is not limited to the above embodiment.
- another embodiment realized by arbitrarily combining the components described in this specification and excluding some of the components may be used as an embodiment of the present disclosure.
- the present disclosure also includes modifications obtained by making various modifications conceivable by those skilled in the art without departing from the gist of the present disclosure, that is, the meanings of the words described in the claims. It is.
- measurement of elapsed time and setting of relative speed based on the result may be performed by an operator.
- the nozzle 201 may be stationary and the substrate 101 may be moved. Further, the nozzle 201 and the substrate 101 may be moved in opposite directions.
- the display panel 100 in which the film 103 is connected to all four sides of the frame portion 111 of the substrate 101 is illustrated.
- the present disclosure is applicable if the film 103 is a display panel connected to at least one side of the substrate 101. Is possible.
- the present disclosure is applicable to the manufacture of flat display devices such as organic EL display devices, liquid crystal display devices, and plasma display devices.
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- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
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Abstract
Description
101 基板
102 表示領域
103 フィルム
104 保護樹脂
105 回路基板
111 額縁部
131 電子部品
132 異方性導電部材
200 塗布装置
201 ノズル
202 シリンジ
203 移動装置
204 加圧装置
205 制御装置
206 テーブル
251 吐出制御部
252 移動制御部
253 時間計測部
300 容器
A 第一位置
B 第二位置
w 幅
Claims (1)
- 矩形の基板の周縁と表示領域の周縁との間にある額縁部に配線が施されたフィルムが接続された表示パネルを製造する表示パネル製造方法であって、
前記額縁部の前記フィルムが接続されている側に、前記基板と前記フィルムとの接続部分を保護する保護樹脂を直線状に塗布する塗布工程において、
前記額縁部の幅の20%以上、30%以下の内径のノズルが接続されるシリンジに、摂氏23度の環境での粘度が4Pa・s以上、6Pa・s以下の前記保護樹脂を投入し、
前記保護樹脂を収容する容器の最初の開封から144時間以内では、前記基板と前記ノズルとの相対速度が26mm/s以上、28mm/s以下となるように前記基板、および、前記ノズルの少なくとも一方を動かし、
前記保護樹脂を収容する容器の最初の開封から144時間以降では、前記基板と前記ノズルとの相対速度が24mm/s以上、26mm/s未満となるように前記基板、および、前記ノズルの少なくとも一方を動かし、
前記基板に対する前記ノズルの位置が第一位置の時に、200kPa以上、280kPa以下の圧力の気体によって加圧された前記保護樹脂を前記ノズルから吐出し、
前記基板に対する前記ノズルの位置が第二位置の時に前記保護樹脂の吐出を停止する
表示パネル製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015554513A JP6142301B2 (ja) | 2013-12-26 | 2014-11-17 | 表示パネル製造方法 |
US15/106,854 US20170034924A1 (en) | 2013-12-26 | 2014-11-17 | Method for fabricating display panel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2013-268275 | 2013-12-26 | ||
JP2013268275 | 2013-12-26 |
Publications (1)
Publication Number | Publication Date |
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WO2015097976A1 true WO2015097976A1 (ja) | 2015-07-02 |
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ID=53477891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2014/005762 WO2015097976A1 (ja) | 2013-12-26 | 2014-11-17 | 表示パネル製造方法 |
Country Status (3)
Country | Link |
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US (1) | US20170034924A1 (ja) |
JP (1) | JP6142301B2 (ja) |
WO (1) | WO2015097976A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001170549A (ja) * | 1999-12-20 | 2001-06-26 | Nec Corp | 液体供給方法 |
JP2004158529A (ja) * | 2002-11-05 | 2004-06-03 | Matsushita Electric Ind Co Ltd | ペースト塗布装置およびペースト塗布方法ならびにペースト塗布における描画性判定装置 |
JP2005345499A (ja) * | 2004-05-31 | 2005-12-15 | Optrex Corp | 表示装置の製造方法 |
JP2012071244A (ja) * | 2010-09-28 | 2012-04-12 | Dainippon Screen Mfg Co Ltd | パターン形成方法およびパターン形成装置 |
-
2014
- 2014-11-17 US US15/106,854 patent/US20170034924A1/en not_active Abandoned
- 2014-11-17 WO PCT/JP2014/005762 patent/WO2015097976A1/ja active Application Filing
- 2014-11-17 JP JP2015554513A patent/JP6142301B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001170549A (ja) * | 1999-12-20 | 2001-06-26 | Nec Corp | 液体供給方法 |
JP2004158529A (ja) * | 2002-11-05 | 2004-06-03 | Matsushita Electric Ind Co Ltd | ペースト塗布装置およびペースト塗布方法ならびにペースト塗布における描画性判定装置 |
JP2005345499A (ja) * | 2004-05-31 | 2005-12-15 | Optrex Corp | 表示装置の製造方法 |
JP2012071244A (ja) * | 2010-09-28 | 2012-04-12 | Dainippon Screen Mfg Co Ltd | パターン形成方法およびパターン形成装置 |
Also Published As
Publication number | Publication date |
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JP6142301B2 (ja) | 2017-06-07 |
JPWO2015097976A1 (ja) | 2017-03-23 |
US20170034924A1 (en) | 2017-02-02 |
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