WO2015174025A1 - Method for manufacturing organic el display panel and system for manufacturing organic el display panel - Google Patents

Method for manufacturing organic el display panel and system for manufacturing organic el display panel Download PDF

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Publication number
WO2015174025A1
WO2015174025A1 PCT/JP2015/002211 JP2015002211W WO2015174025A1 WO 2015174025 A1 WO2015174025 A1 WO 2015174025A1 JP 2015002211 W JP2015002211 W JP 2015002211W WO 2015174025 A1 WO2015174025 A1 WO 2015174025A1
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substrate
display panel
organic
discharge
manufacturing
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PCT/JP2015/002211
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French (fr)
Japanese (ja)
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清志 下村
昂陽 堀内
木村　悌一
明徳 山口
信 岡崎
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株式会社Ｊｏｌｅｄ
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Publication of WO2015174025A1 publication Critical patent/WO2015174025A1/en

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/1201—Manufacture or treatment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources

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  • the present disclosure relates to a method of manufacturing an organic EL display panel and a manufacturing system of an organic EL display panel, and more particularly to a manufacturing method of an organic EL display panel in which a printing technique is adopted and a manufacturing system of the organic EL display panel.
  • Patent Document 1 a substrate for manufacturing an organic EL display panel or a color filter and a head for ejecting ink are relatively moved, and ink is ejected from the head to apply ink to a predetermined position on the substrate.
  • a manufacturing apparatus is described.
  • the head of the manufacturing apparatus includes a plurality of nozzles for ejecting ink in a row, and the arrangement direction of the plurality of nozzles and the relative movement direction of the substrate and the head obliquely intersect with each other. Has been placed.
  • the nozzle pitch can be adjusted in the width direction perpendicular to the moving direction by arranging the nozzles in an oblique direction with respect to the relative moving direction of the substrate and the head. Yes.
  • the present disclosure relates to a method of manufacturing an organic EL display panel and a manufacturing system of an organic EL display panel, which compensates for variations in the amount of raw material liquid discharged from a plurality of discharge ports in a discharge process, and is stable.
  • An organic EL display panel manufacturing method capable of printing a raw material liquid and an organic EL display panel manufacturing system are provided.
  • an organic EL display panel manufacturing method includes a plurality of cells in which light-emitting pixels are formed along a first direction, and a column of cells arranged in the first direction.
  • the relative movement direction of the substrate and the ejection head intersects with the first direction except for orthogonality.
  • the present disclosure it is possible to increase the number of discharge ports that can discharge the raw material liquid into one cell, and to efficiently average the variation in the discharge state of the raw material liquid at each discharge port. It becomes. Furthermore, if the entire organic EL display panel is used, even if one of the discharge ports has a defect, the influence of the discharge port defect is not reflected in a direction parallel to or orthogonal to the scanning direction when displaying an image. It is possible to reduce a sense of incongruity when viewing an image displayed on the organic EL display panel.
  • FIG. 1 is a perspective view schematically showing a substrate during manufacture of an organic EL display panel.
  • FIG. 2 is a plan view schematically showing the relationship between the conventional substrate and the discharge ports.
  • FIG. 3 is a perspective view showing a television provided with an organic EL display panel.
  • FIG. 4 is a plan view schematically showing a manufacturing system of an organic EL display panel.
  • FIG. 5 is a flowchart showing a method for manufacturing an organic EL display panel.
  • FIG. 6 is a plan view showing a state in which the substrate is loaded on the rotating device in the manufacturing process.
  • FIG. 7 is a plan view showing a state where the substrate is rotated by the rotating device so that the first direction intersects the moving direction in the manufacturing process.
  • FIG. 1 is a perspective view schematically showing a substrate during manufacture of an organic EL display panel.
  • FIG. 2 is a plan view schematically showing the relationship between the conventional substrate and the discharge ports.
  • FIG. 3 is a perspective view showing a television provided with
  • FIG. 8 is a plan view schematically showing a manufacturing system that performs the discharging step.
  • FIG. 9 is a diagram schematically showing the relationship between the cells and the discharge ports before and after rotating the substrate.
  • FIG. 10 is a diagram schematically showing the influence on the cell when a defect occurs in the discharge port.
  • FIG. 11 is a plan view schematically showing another crossing state between the first direction and the moving direction.
  • FIG. 1 is a perspective view schematically showing a substrate during manufacture of an organic EL display panel.
  • FIG. 2 is a plan view schematically showing the relationship between the conventional substrate and the discharge port.
  • a vertical bank 111 which is a bank 101 (partition wall) arranged extending in the vertical direction (X-axis direction in the drawing) on the printing surface (surface on the positive side in the Z-axis direction in the drawing) of the substrate 100 before entering the discharge process;
  • a horizontal bank 112 that is a bank 101 arranged extending in the horizontal direction (Y-axis direction in the figure) is provided in a lattice shape.
  • a minimum unit surrounded by the vertical bank 111 and the horizontal bank 112 is a cell 102.
  • the discharge port 109 and the substrate 100 are arranged in the vertical direction (X-axis direction in the figure).
  • the raw material liquid was applied from the discharge port 109 located immediately above the cell 102.
  • the number of discharge ports 109 that can discharge to one cell 102 is defined by the width of the cell 102 (for example, the length in the Y-axis direction in the figure).
  • the raw material liquid is discharged in the same state in the cells 102 arranged in the relative movement direction (X-axis direction in the drawing) between the discharge ports 109 and the substrate 100.
  • the arrangement of the cells 102 printed in a unique state and the scanning lines of the video signal are in parallel or orthogonal to each other so that a person who views the image can view the image. An unusual line-up was conspicuous.
  • the organic EL display panel 300 is a device that displays video, images, characters, and the like as shown in FIG. 3, for example, and is a display device manufactured from the substrate 100 as shown in FIG. For example, the organic EL display panel 300 is incorporated in a television 399 that outputs an image obtained from a received broadcast wave or the like.
  • the organic EL display panel 300 includes, as a light emitting element, an organic EL (Electro Luminescence) diode that is a light emitting diode having a light emitting layer formed of an organic EL material.
  • the electron injection layer, the electron transport layer, the light emitting layer, the hole transport layer, the hole injection layer, and other intermediate layers contribute to light emission of the cell 102 of the organic EL display panel 300, and are sandwiched between the negative electrode and the positive electrode.
  • a case where at least one layer of the light emission contributing layer is formed by a printing method will be described.
  • FIG. 4 is a plan view schematically showing a manufacturing system of an organic EL display panel.
  • the discharge head 401 is an apparatus that includes a plurality of discharge ports arranged to discharge a raw material liquid containing a material for forming one of the light emission contributing layers in a droplet shape.
  • the method for discharging the raw material liquid is not particularly limited, but a jet dispensing apparatus can be exemplified.
  • the discharge head 401 has a large number of discharge ports 109 arranged in a line or in a narrow band-like region, and discharges the raw material liquid from each discharge port 109 individually. It is possible to control it.
  • the discharge head 401 is the discharge head 401 even if a plurality of nozzles are arranged. Further, when discharging a raw material liquid containing a material for forming a light emitting layer, a plurality (three) of discharge heads 401 for discharging a raw material liquid containing a material corresponding to each of RGB in the moving direction (X-axis direction in the figure). Above) You can arrange them.
  • the moving device 402 is a device that relatively moves the ejection head 401 and the substrate 100.
  • the moving device 402 moves the rotating device 404 relative to the discharging head 401 along the moving direction (X-axis direction in the drawing) while holding the substrate 100.
  • the substrate 100 is moved relatively.
  • the moving device 402 can reciprocate the rotating device 404 along a rail 421 that extends and extends in the moving direction (X-axis direction in the drawing).
  • the ejection head 401 is fixed to the rail 421 and the moving device 402 is described as moving only the rotating device 404.
  • the rotating device 404 is set in a fixed state.
  • the moving device 402 may move the ejection head 401, or the moving device 402 may move the rotating device 404 and the ejection head 401. Further, the moving device 402 may receive the substrate 100 rotated by the rotating device 404 and relatively move the received substrate 100 and the ejection head 401.
  • the rotation device 404 In the rotation device 404, the relationship between the relative movement direction (X-axis direction in the figure) and the first direction (a-axis direction in the figure) between the substrate 100 and the ejection head 401 is in an intersecting state excluding orthogonality.
  • An apparatus for rotating the substrate 100 In the present embodiment, the rotating device 404 holds the substrate 100 in a mounting shape, and rotates the substrate 100 mounted by a loader (not shown) with the vertical direction (Z-axis direction in the figure) as a rotation axis. The substrate 100 is rotated so that the moving direction intersects the first direction and the second direction.
  • the control device 403 is a device that selects the discharge port 109 present at a position facing the predetermined cell 102 and discharges the raw material liquid from the discharge port 109. In the case of this embodiment, the control device 403 controls how much raw material liquid is discharged from which discharge port 109 at which timing by causing the computer to execute software.
  • the control device 403 is determined based on the type of the substrate 100 and the angle formed by the moving direction (X-axis direction in the drawing) and the first direction (a-axis direction in the drawing).
  • the amount of movement or the relative positional relationship between the discharge head 401 and the rotation device 404 is acquired by a sensor such as an encoder, and the timing of discharging the raw material liquid is controlled.
  • FIG. 5 is a flowchart showing a method for manufacturing an organic EL display panel.
  • the organic EL display panel manufacturing method is such that a plurality of cells in which light emitting pixels are formed are provided along a first direction (a-axis direction in FIG. 4), and are arranged in the first direction. At least one of the light emission contributing layers is formed on the substrate 100 provided in a row in the second direction (b-axis direction in FIG. 4) perpendicular to the first direction by using a printing method, and the organic EL This is a method for manufacturing the display panel 300.
  • the substrate 100 which is a control for discharging the raw material liquid is a substrate called a mother substrate having a plurality of regions as shown in FIG.
  • the substrate 100 is a substrate that is cut so that each region is separated in the future and becomes an independent organic EL display panel 300.
  • the cells 102 are arranged along the first direction (a-axis direction in the figure), and the rows of the cells 102 are arranged in the second direction (b-axis direction in the figure). In other words, the cells 102 may be misaligned between regions.
  • the longitudinal direction of the rectangular substrate 100 is the first direction
  • the short direction of the substrate 100 is the second direction
  • the displacement of the cell 102 is allowed.
  • the first direction and scanning lines of image signals to be displayed in the future are parallel, and in other areas, the first direction and scanning lines are orthogonal to each other. Focusing on the region, the direction parallel to or perpendicular to the scanning line of the image signal to be displayed in the future may be defined as the first direction.
  • the long or short direction of the cell 102 may be defined as the first direction.
  • the substrate 100 on which the bank 101 or the like is formed in the previous process is received from the transfer device or the like and is held by the rotating device 404 (loading step S501).
  • the first direction (a-axis direction in the figure) and the moving direction (X-axis direction in the figure) are parallel.
  • the substrate 100 is moved using the rotation device 404 so that the first direction (a-axis direction in the drawing) intersects the relative movement direction (X-axis direction in the drawing) between the substrate 100 and the ejection head 401. It is rotated around the vertical axis (Z-axis direction in the figure) (rotation step S502).
  • the angle between the first direction and the moving direction is not particularly limited, but the spread width in the direction orthogonal to the moving direction of the discharge port 109 (the discharge port 109 in the figure is arranged). Width in the direction of the Y axis) and the spread width in the direction perpendicular to the moving direction of the area of the cell 102 arranged on the substrate 100 after rotation (the width in the Y axis direction of the area in which the cell 102 is arranged in the figure) ) Can be rotated until they match. Further, the substrate 100 may be rotated until the diagonal line of the cell 102 is orthogonal to the moving direction.
  • FIG. 7 is a plan view showing a state in which the substrate is rotated by the rotating device so that the first direction intersects the moving direction in the manufacturing process.
  • a raw material liquid containing a material for forming one of the light emission contributing layers is moved relative to the ejection head 401 and the substrate 100 in the movement direction (X-axis direction in the drawing) (movement step S503).
  • the control device 403 selects a discharge port 109 (see FIG. 8) that exists at a position facing the cell 102, and the raw material liquid is discharged from the corresponding discharge port 109. Discharge (including discharge step S504).
  • a predetermined raw material liquid is applied in a predetermined cell 102.
  • FIG. 9 is a diagram schematically showing the relationship between the cells before and after the substrate is rotated and the discharge ports 109.
  • the arrangement of the discharge ports 109 is temporarily described so as to be orthogonal to the movement direction (X-axis direction in the figure).
  • the raw material liquid can be discharged from a larger number of discharge ports 109 to one cell 102. Variations in the state of the raw material liquid discharged from the discharge port 109 can be further averaged.
  • an image is displayed on the organic EL display panel 300 obtained from the substrate 100, it is possible to realize display in a uniform state.
  • the rotating device 404 rotates the substrate 100 so that the first direction and the moving direction are aligned (reverse rotation step S505).
  • the substrate 100 is transferred from the rotating device 404 to a transfer device or the like (unloading step S506).
  • the substrate 100 is passed to the post-process, and the organic EL display panel 300 is manufactured.
  • FIG. 11 is a plan view schematically showing another crossing state between the first direction and the moving direction.
  • the substrate 100 is a mother substrate in which cells are arranged in a plurality of regions, and a rectangular first cell 121 having a longitudinal direction in the first direction a and a second direction b. And a rectangular second cell 122 along the longitudinal direction.
  • the substrate 100 is parallel to an angle bisector (indicated by a one-dot chain line in the figure) formed by the moving direction (X-axis direction in the figure), the first direction a, and the second direction b.
  • the rotating device 404 is rotated (rotation angle is 45 degrees in this embodiment).
  • the organic EL display panel 300 is provided in a television.
  • the organic EL display panel 300 may be used other than the television.
  • the organic EL display panel 300 includes a monitor device that displays video input from the outside, digital signage used as an advertising medium, a portable terminal that accepts user operations via a touch panel, a tablet terminal, and a table-type organic display It may be realized as the EL display panel 300 or the like.
  • the substrate 100 is described as moving with respect to the ejection head 401 together with the rotation device 404. However, if the substrate 100 and the ejection head 401 move relatively in the ejection process, the substrate 100 rotates. The device 404 does not have to move.
  • the cell 102 when the cell 102 is rectangular, it is desirable to determine the intersection angle between the first direction and the moving direction so that one of the diagonal lines of the cell 102 is orthogonal to the moving direction. Thereby, it becomes possible to make many discharge ports 109 face one cell 102.
  • the present disclosure can be applied not only to the mother substrate but also to manufacturing one organic EL display panel 300 with one substrate.
  • the present disclosure is a manufacturing method of an organic EL display panel that displays images, characters, and moving images, and a manufacturing system of an organic EL display panel, and is particularly applicable to a large organic EL display panel.
  • the present disclosure is applicable to electronic devices such as a television, a monitor display, digital signage, a portable terminal, a tablet terminal, and a table-type organic EL display panel.

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  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

　A method for manufacturing an organic EL display panel (300) provided with a substrate (100) in which cells (102) are provided along a first direction (a), a plurality of cell rows being provided along a second direction (b) orthogonal to the first direction (a); wherein the method includes a discharging step for: causing a discharge head (401) provided with a row of a plurality of discharge ports (109) via which a raw material liquid containing a material for forming a layer within a light emission contribution layer is dicharged as liquid droplets, and a substrate (100) to move relative to each other; selecting a discharge port (109) positioned so as to face a cell (102); and discharging the raw material liquid. In the discharging step, the direction (X) of relative movement between the substrate (100) and the discharge head intersects with the first direction (a) in a non-orthogonal manner.

Description

有機ＥＬ表示パネルの製造方法および有機ＥＬ表示パネルの製造システムOrganic EL display panel manufacturing method and organic EL display panel manufacturing system
　本開示は、有機ＥＬ表示パネルを製造する方法、および、有機ＥＬ表示パネルの製造システムに関し、特に印刷技術が採用される有機ＥＬ表示パネルの製造方法、および、有機ＥＬ表示パネルの製造システムに関する。 The present disclosure relates to a method of manufacturing an organic EL display panel and a manufacturing system of an organic EL display panel, and more particularly to a manufacturing method of an organic EL display panel in which a printing technique is adopted and a manufacturing system of the organic EL display panel.
　特許文献１には、有機ＥＬ表示パネルやカラーフィルタを製造するための基板とインクを吐出するヘッドとを相対的に移動させ、前記ヘッドからインクを吐出して基板の所定の位置にインクを塗布する製造装置が記載されている。前記製造装置のヘッドはインクを吐出するための複数のノズルを列状に備えており、複数の前記ノズルの並び方向と、基板とヘッドとの相対的な移動方向とが斜めに交差するように配置されている。 In Patent Document 1, a substrate for manufacturing an organic EL display panel or a color filter and a head for ejecting ink are relatively moved, and ink is ejected from the head to apply ink to a predetermined position on the substrate. A manufacturing apparatus is described. The head of the manufacturing apparatus includes a plurality of nozzles for ejecting ink in a row, and the arrangement direction of the plurality of nozzles and the relative movement direction of the substrate and the head obliquely intersect with each other. Has been placed.
　このように、基板とヘッドとの相対的な移動方向に対し、ノズルの並びを斜めに配置することで、移動方向と垂直な幅方向においてノズルのピッチを調整することができると、記載されている。 In this way, it is described that the nozzle pitch can be adjusted in the width direction perpendicular to the moving direction by arranging the nozzles in an oblique direction with respect to the relative moving direction of the substrate and the head. Yes.
特開２００２－２７３８６９号公報JP 2002-273869 A
　本開示は、有機ＥＬ表示パネルを製造する方法、および、有機ＥＬ表示パネルの製造システムであって、吐出工程において複数の吐出口からそれぞれ吐出される原料液の量などのばらつきを相殺し、安定して原料液を印刷することのできる有機ＥＬ表示パネルの製造方法、および、有機ＥＬ表示パネルの製造システムを提供する。 The present disclosure relates to a method of manufacturing an organic EL display panel and a manufacturing system of an organic EL display panel, which compensates for variations in the amount of raw material liquid discharged from a plurality of discharge ports in a discharge process, and is stable. An organic EL display panel manufacturing method capable of printing a raw material liquid and an organic EL display panel manufacturing system are provided.
　上記目的を達成するために、本開示にかかる有機ＥＬ表示パネルの製造方法は、発光画素が形成される複数のセルが第一方向に沿って設けられ、第一方向に並んだセルの列が前記第一方向に直交する第二方向に並んで複数設けられた基板を備える有機ＥＬ表示パネルを製造する方法であって、発光寄与層の中の１層を形成する材料を含む原料液を液滴状に吐出する複数の吐出口を並べて備える吐出ヘッドと前記基板とを相対的に移動させ、前記セルと対向する位置に存在する前記吐出口を選択して前記原料液を吐出する吐出工程を含み、前記吐出工程において、前記基板と吐出ヘッドとの相対的な移動方向は、前記第一方向と直交を除いた交差をしている。 In order to achieve the above object, an organic EL display panel manufacturing method according to the present disclosure includes a plurality of cells in which light-emitting pixels are formed along a first direction, and a column of cells arranged in the first direction. A method of manufacturing an organic EL display panel including a plurality of substrates arranged in a second direction orthogonal to the first direction, wherein a raw material liquid containing a material for forming one layer of the light emission contributing layer is used. A discharge step of discharging the raw material liquid by relatively moving a discharge head provided with a plurality of discharge ports arranged in droplets and the substrate, and selecting the discharge port existing at a position facing the cell; In the ejection step, the relative movement direction of the substrate and the ejection head intersects with the first direction except for orthogonality.
　本開示によれば、一つのセルに原料液を吐出することができる吐出口の数を多くすることができ、各吐出口における原料液の吐出状態のばらつきを効率的に平均化することが可能となる。さらに、有機ＥＬ表示パネル全体とすれば、吐出口の一つに不具合があった場合でも画像を表示する際の走査方向と平行、または、直交方向に吐出口の不具合の影響が反映されないため、有機ＥＬ表示パネルに表示される映像を看取した際の違和感を低減することが可能となる。 According to the present disclosure, it is possible to increase the number of discharge ports that can discharge the raw material liquid into one cell, and to efficiently average the variation in the discharge state of the raw material liquid at each discharge port. It becomes. Furthermore, if the entire organic EL display panel is used, even if one of the discharge ports has a defect, the influence of the discharge port defect is not reflected in a direction parallel to or orthogonal to the scanning direction when displaying an image. It is possible to reduce a sense of incongruity when viewing an image displayed on the organic EL display panel.
図１は、有機ＥＬ表示パネルの製造中における基板を模式的に示す斜視図である。FIG. 1 is a perspective view schematically showing a substrate during manufacture of an organic EL display panel. 図２は、従前の基板と吐出口との関係を模式的に示す平面図である。FIG. 2 is a plan view schematically showing the relationship between the conventional substrate and the discharge ports. 図３は、有機ＥＬ表示パネルを備えたテレビを示す斜視図である。FIG. 3 is a perspective view showing a television provided with an organic EL display panel. 図４は、有機ＥＬ表示パネルの製造システムを模式的に示す平面図である。FIG. 4 is a plan view schematically showing a manufacturing system of an organic EL display panel. 図５は、有機ＥＬ表示パネルの製造方法を示すフローチャートである。FIG. 5 is a flowchart showing a method for manufacturing an organic EL display panel. 図６は、製造工程において、回転装置に基板がロードされた状態を示す平面図である。FIG. 6 is a plan view showing a state in which the substrate is loaded on the rotating device in the manufacturing process. 図７は、製造工程において、回転装置により移動方向に対し第一方向が交差するように基板が回転された状態を示す平面図である。FIG. 7 is a plan view showing a state where the substrate is rotated by the rotating device so that the first direction intersects the moving direction in the manufacturing process. 図８は、吐出工程を実施している製造システムを模式的に示す平面図である。FIG. 8 is a plan view schematically showing a manufacturing system that performs the discharging step. 図９は、基板を回転させる前後のセルと吐出口との関係を模式的に示す図である。FIG. 9 is a diagram schematically showing the relationship between the cells and the discharge ports before and after rotating the substrate. 図１０は、吐出口に不具合が生じた場合のセルへの影響を模式的に示す図である。FIG. 10 is a diagram schematically showing the influence on the cell when a defect occurs in the discharge port. 図１１は、第一方向と移動方向との他の交差状態を模式的に示す平面図である。FIG. 11 is a plan view schematically showing another crossing state between the first direction and the moving direction.
　図１は、有機ＥＬ表示パネルの製造中における基板を模式的に示す斜視図である。 FIG. 1 is a perspective view schematically showing a substrate during manufacture of an organic EL display panel.
　図２は、従前の基板と吐出口との関係を模式的に示す平面図である。 FIG. 2 is a plan view schematically showing the relationship between the conventional substrate and the discharge port.
　これらの図には、吐出工程に入る前の基板１００の一部が示されている。吐出工程に入る前の基板１００の印刷面（図中Ｚ軸方向正側の面）には縦方向（図中Ｘ軸方向）に延びて配置されるバンク１０１（隔壁）である縦バンク１１１と横方向（図中Ｙ軸方向）に延びて配置されるバンク１０１である横バンク１１２とが格子状に設けられている。縦バンク１１１と横バンク１１２とで囲われた最小単位がセル１０２である。 In these drawings, a part of the substrate 100 before entering the discharge process is shown. A vertical bank 111 which is a bank 101 (partition wall) arranged extending in the vertical direction (X-axis direction in the drawing) on the printing surface (surface on the positive side in the Z-axis direction in the drawing) of the substrate 100 before entering the discharge process; A horizontal bank 112 that is a bank 101 arranged extending in the horizontal direction (Y-axis direction in the figure) is provided in a lattice shape. A minimum unit surrounded by the vertical bank 111 and the horizontal bank 112 is a cell 102.
　このような基板１００に対し例えば発光層を形成する有機ＥＬ材料を含む原料液（いわゆるインク）を塗布する従前の吐出工程においては、吐出口１０９と基板１００とを縦方向（図中Ｘ軸方向）に沿って相対的に移動させ、セル１０２の直上に位置した吐出口１０９から原料液を塗布していた。この場合、一つのセル１０２に吐出できる吐出口１０９の数は、セル１０２の幅（例えば図中Ｙ軸方向の長さ）によって規定される。従って、各吐出口１０９から吐出される原料液の状態のばらつきを平均化する場合、セル１０２の幅に規定された数の吐出口１０９によって調整を図ることになり、調整の自由度が少ないものとなっていた。特に昨今の有機ＥＬ表示パネルは、高精細化が進んでいるため、セル１０２の面積が小さくなり、上記傾向がより顕著なものになっている。 In a conventional discharge process in which a raw material liquid (so-called ink) including an organic EL material for forming a light emitting layer is applied to such a substrate 100, the discharge port 109 and the substrate 100 are arranged in the vertical direction (X-axis direction in the figure). ), And the raw material liquid was applied from the discharge port 109 located immediately above the cell 102. In this case, the number of discharge ports 109 that can discharge to one cell 102 is defined by the width of the cell 102 (for example, the length in the Y-axis direction in the figure). Therefore, when averaging the variation in the state of the raw material liquid discharged from each discharge port 109, adjustment is made by the number of discharge ports 109 defined by the width of the cell 102, and the degree of freedom of adjustment is small. It was. Particularly in recent organic EL display panels, since the definition is advanced, the area of the cell 102 is reduced, and the above tendency becomes more remarkable.
　さらに、吐出口１０９間のばらつきが調整しきれないような場合、吐出口１０９と基板１００との相対的な移動方向（図中Ｘ軸方向）に並んだセル１０２は同じ状態で原料液が吐出されることになる。このような状態で製造された有機ＥＬ表示パネルは、特異な状態で印刷されたセル１０２の並びと映像信号の走査線とが平行となるか、または、直交する状態となり、映像を見る人にとって特異な並びが目立つものとなっていた。 Furthermore, when the variation between the discharge ports 109 cannot be adjusted, the raw material liquid is discharged in the same state in the cells 102 arranged in the relative movement direction (X-axis direction in the drawing) between the discharge ports 109 and the substrate 100. Will be. In the organic EL display panel manufactured in such a state, the arrangement of the cells 102 printed in a unique state and the scanning lines of the video signal are in parallel or orthogonal to each other so that a person who views the image can view the image. An unusual line-up was conspicuous.
　本開示は、上記新しく得られた知見に基づいてなされたものである。以下に適宜図面を参照しながら、実施の形態を説明する。但し、必要以上に詳細な説明は省略する場合がある。例えば、既によく知られた事項の詳細説明や実質的に同一の構成に対する重複説明を省略する場合がある。これは、以下の説明が不必要に冗長になるのを避け、当業者の理解を容易にするためである。 This disclosure has been made based on the newly obtained knowledge. Embodiments will be described below with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of already well-known matters and repeated descriptions for substantially the same configuration may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art.
　なお、本開示者らは、当業者が本開示を十分に理解するために添付図面および以下の説明を提供するのであって、これらによって請求の範囲に記載の主題を限定することを意図するものではない。 It is to be noted that the present disclosure provides the accompanying drawings and the following description for those skilled in the art to fully understand the present disclosure, and intends to limit the claimed subject matter by these. is not.
　（実施の形態１）
　［有機ＥＬ表示パネルの概要］
　有機ＥＬ表示パネル３００は、例えば図３に示すように、映像や画像、文字などを表示する装置であり、図１に示すような基板１００から製造される表示装置である。例えば、有機ＥＬ表示パネル３００は、受信した放送波等から得られる映像を出力するテレビ３９９に組み込まれる。有機ＥＬ表示パネル３００は、有機ＥＬ材料で発光層が形成された発光ダイオードである有機ＥＬ（Ｅｌｅｃｔｒｏ　Ｌｕｍｉｎｅｓｃｅｎｃｅ）ダイオードを発光素子として備えている。 (Embodiment 1)
[Outline of organic EL display panel]
The organic EL display panel 300 is a device that displays video, images, characters, and the like as shown in FIG. 3, for example, and is a display device manufactured from the substrate 100 as shown in FIG. For example, the organic EL display panel 300 is incorporated in a television 399 that outputs an image obtained from a received broadcast wave or the like. The organic EL display panel 300 includes, as a light emitting element, an organic EL (Electro Luminescence) diode that is a light emitting diode having a light emitting layer formed of an organic EL material.
　本開示では、電子注入層、電子輸送層、発光層、正孔輸送層、正孔注入層その他中間層など有機ＥＬ表示パネル３００のセル１０２の発光に寄与し、陰電極と陽電極とに挟まれる発光寄与層の少なくとも一つの層を印刷法によって形成する場合を説明する。 In the present disclosure, the electron injection layer, the electron transport layer, the light emitting layer, the hole transport layer, the hole injection layer, and other intermediate layers contribute to light emission of the cell 102 of the organic EL display panel 300, and are sandwiched between the negative electrode and the positive electrode. A case where at least one layer of the light emission contributing layer is formed by a printing method will be described.
　［有機ＥＬ表示パネルの製造システム］
　図４は、有機ＥＬ表示パネルの製造システムを模式的に示す平面図である。 [Organic EL display panel manufacturing system]
FIG. 4 is a plan view schematically showing a manufacturing system of an organic EL display panel.
　同図に示すように製造システム４００は、セル１０２が第一方向（同図中ａ軸方向）に沿って設けられ、第一方向に並んだセルの列が第一方向に直交する第二方向（同図中ｂ軸方向）に並んで複数設けられた基板１００を備える有機ＥＬ表示パネル３００を製造する製造システム４００であって、吐出ヘッド４０１と、移動装置４０２と、制御装置４０３と、回転装置４０４とを備えている。 As shown in the figure, in the manufacturing system 400, cells 102 are provided along a first direction (a-axis direction in the figure), and a row of cells arranged in the first direction is perpendicular to the first direction. A manufacturing system 400 for manufacturing an organic EL display panel 300 including a plurality of substrates 100 arranged side by side (in the b-axis direction in the figure), including an ejection head 401, a moving device 402, a control device 403, and a rotation Device 404.
　吐出ヘッド４０１は、発光寄与層の中の１層を形成する材料を含む原料液を液滴状に吐出する複数の吐出口を並べて備える装置である。原料液の吐出方式は特に限定されるものでは無いが、ジェットディスペンス方式の装置を例示することができる。本実施の形態の場合、吐出ヘッド４０１は、線上、または、細い幅の帯状領域内に並んで配置された多数の吐出口１０９を有し、それぞれの吐出口１０９からの原料液の吐出を個々に制御することができものとなっている。 The discharge head 401 is an apparatus that includes a plurality of discharge ports arranged to discharge a raw material liquid containing a material for forming one of the light emission contributing layers in a droplet shape. The method for discharging the raw material liquid is not particularly limited, but a jet dispensing apparatus can be exemplified. In the case of the present embodiment, the discharge head 401 has a large number of discharge ports 109 arranged in a line or in a narrow band-like region, and discharges the raw material liquid from each discharge port 109 individually. It is possible to control it.
　なお吐出ヘッド４０１は、複数のノズルを並べたものでも吐出ヘッド４０１である。また、発光層を形成する材料を含む原料液を吐出する場合、ＲＧＢのそれぞれに対応する材料を含む原料液を吐出する吐出ヘッド４０１を移動方向（図中Ｘ軸方向）に複数本（三本以上）並べてもかまわない。 Note that the discharge head 401 is the discharge head 401 even if a plurality of nozzles are arranged. Further, when discharging a raw material liquid containing a material for forming a light emitting layer, a plurality (three) of discharge heads 401 for discharging a raw material liquid containing a material corresponding to each of RGB in the moving direction (X-axis direction in the figure). Above) You can arrange them.
　移動装置４０２は、吐出ヘッド４０１と基板１００とを相対的に移動させる装置である。本実施の形態、移動装置４０２は、回転装置４０４を、基板１００を保持した状態で移動方向（図中Ｘ軸方向）に沿って吐出ヘッドに対し相対的に移動させることにより、吐出ヘッド４０１と基板１００とを相対的に移動させるものである。移動装置４０２は、移動方向（図中Ｘ軸方向）に延びて敷設されるレール４２１に沿って回転装置４０４を往復動させることができるものとなっている。 The moving device 402 is a device that relatively moves the ejection head 401 and the substrate 100. In this embodiment, the moving device 402 moves the rotating device 404 relative to the discharging head 401 along the moving direction (X-axis direction in the drawing) while holding the substrate 100. The substrate 100 is moved relatively. The moving device 402 can reciprocate the rotating device 404 along a rail 421 that extends and extends in the moving direction (X-axis direction in the drawing).
　なお、本実施の形態の場合、吐出ヘッド４０１は、レール４２１に対して固定され、移動装置４０２は、回転装置４０４のみを移動させるものとして説明しているが、回転装置４０４を固定状態とし、移動装置４０２が吐出ヘッド４０１を移動させてもよく、また、移動装置４０２が、回転装置４０４および吐出ヘッド４０１を移動させるものでもかまわない。さらに移動装置４０２は、回転装置４０４によって回転した基板１００を受け取り、受け取った基板１００と吐出ヘッド４０１とを相対的に移動させるものでもかまわない。 In the present embodiment, the ejection head 401 is fixed to the rail 421 and the moving device 402 is described as moving only the rotating device 404. However, the rotating device 404 is set in a fixed state. The moving device 402 may move the ejection head 401, or the moving device 402 may move the rotating device 404 and the ejection head 401. Further, the moving device 402 may receive the substrate 100 rotated by the rotating device 404 and relatively move the received substrate 100 and the ejection head 401.
　回転装置４０４は、基板１００と吐出ヘッド４０１との相対的な移動方向（図中Ｘ軸方向）と第一方向（図中ａ軸方向）との関係が直交を除いた交差状態となるように基板１００を回転させる装置である。本実施の形態、回転装置４０４は、基板１００を載置状に保持しており、図示しないローダにより載置された基板１００を、鉛直方向（図中Ｚ軸方向）を回転軸として回転させることができるものとなっており、移動方向が第一方向、および、第二方向に交差する状態となるように基板１００を回転させる。 In the rotation device 404, the relationship between the relative movement direction (X-axis direction in the figure) and the first direction (a-axis direction in the figure) between the substrate 100 and the ejection head 401 is in an intersecting state excluding orthogonality. An apparatus for rotating the substrate 100. In the present embodiment, the rotating device 404 holds the substrate 100 in a mounting shape, and rotates the substrate 100 mounted by a loader (not shown) with the vertical direction (Z-axis direction in the figure) as a rotation axis. The substrate 100 is rotated so that the moving direction intersects the first direction and the second direction.
　制御装置４０３は、所定のセル１０２と対向する位置に存在する吐出口１０９を選択し、吐出口１０９から原料液を吐出させる装置である。本実施の形態の場合、制御装置４０３はコンピュータにソフトウエアを実行させることにより、いずれの吐出口１０９からどのタイミングで、どれくらいの量の原料液を吐出するかを制御している。また、制御装置４０３は、基板１００の種類や移動方向（図中Ｘ軸方向）と第一方向（図中ａ軸方向）とがなす角に基づいて決定され、回転装置４０４が移動装置４０２によって移動した量、または、吐出ヘッド４０１と回転装置４０４との相対的な位置関係をエンコーダなどのセンサにより取得し、原料液吐出のタイミングを制御している。 The control device 403 is a device that selects the discharge port 109 present at a position facing the predetermined cell 102 and discharges the raw material liquid from the discharge port 109. In the case of this embodiment, the control device 403 controls how much raw material liquid is discharged from which discharge port 109 at which timing by causing the computer to execute software. The control device 403 is determined based on the type of the substrate 100 and the angle formed by the moving direction (X-axis direction in the drawing) and the first direction (a-axis direction in the drawing). The amount of movement or the relative positional relationship between the discharge head 401 and the rotation device 404 is acquired by a sensor such as an encoder, and the timing of discharging the raw material liquid is controlled.
　［有機ＥＬ表示パネルの製造方法］
　次に、有機ＥＬ表示パネル３００の製造方法について説明する。 [Method of manufacturing organic EL display panel]
Next, a method for manufacturing the organic EL display panel 300 will be described.
　図５は、有機ＥＬ表示パネルの製造方法を示すフローチャートである。 FIG. 5 is a flowchart showing a method for manufacturing an organic EL display panel.
　同図に示すように、有機ＥＬ表示パネルの製造方法は、発光画素が形成される複数のセルが第一方向（図４中ａ軸方向）に沿って設けられ、第一方向に並んだセルの列が第一方向に直交する第二方向（図４中ｂ軸方向）に並んで複数設けられた基板１００に対し発光寄与層の少なくとも１層を、印刷法を用いて形成し、有機ＥＬ表示パネル３００を製造する方法である。 As shown in the figure, the organic EL display panel manufacturing method is such that a plurality of cells in which light emitting pixels are formed are provided along a first direction (a-axis direction in FIG. 4), and are arranged in the first direction. At least one of the light emission contributing layers is formed on the substrate 100 provided in a row in the second direction (b-axis direction in FIG. 4) perpendicular to the first direction by using a printing method, and the organic EL This is a method for manufacturing the display panel 300.
　本実施の形態の場合、原料液を吐出する対照である基板１００は、図６に示すように、複数の領域を有したマザー基板と称される基板である。当該基板１００は、将来的には各領域が分かれるように切断され、それぞれが独立した有機ＥＬ表示パネル３００となる基板である。基板１００の各領域には、それぞれセル１０２が第一方向（図中ａ軸方向）に沿って並べられ、当該セル１０２の列が第二方向（図中ｂ軸方向）に並んで配置されており、各領域間などでセル１０２の並びにずれが生じる場合がある。従って本実施の形態の場合、矩形の基板１００の長手方向を第一方向とし、基板１００の短手方向を第二方向とし、セル１０２のずれは許容するものとして説明している。なお、基板１００の或る領域では第一方向と将来的に表示される画像信号の走査線とが平行であり、他の領域では第一方向と走査線とが直交しているが、一つの領域に着目し、将来的に表示される画像信号の走査線と平行な方向または直交方向を第一方向と定義づけてもよい。さらに、セル１０２が矩形の場合、セル１０２の長手または短手方向を第一方向と定義づけてもよい。 In the case of the present embodiment, the substrate 100 which is a control for discharging the raw material liquid is a substrate called a mother substrate having a plurality of regions as shown in FIG. The substrate 100 is a substrate that is cut so that each region is separated in the future and becomes an independent organic EL display panel 300. In each region of the substrate 100, the cells 102 are arranged along the first direction (a-axis direction in the figure), and the rows of the cells 102 are arranged in the second direction (b-axis direction in the figure). In other words, the cells 102 may be misaligned between regions. Therefore, in the present embodiment, it is described that the longitudinal direction of the rectangular substrate 100 is the first direction, the short direction of the substrate 100 is the second direction, and the displacement of the cell 102 is allowed. In some areas of the substrate 100, the first direction and scanning lines of image signals to be displayed in the future are parallel, and in other areas, the first direction and scanning lines are orthogonal to each other. Focusing on the region, the direction parallel to or perpendicular to the scanning line of the image signal to be displayed in the future may be defined as the first direction. Furthermore, when the cell 102 is rectangular, the long or short direction of the cell 102 may be defined as the first direction.
　まず、前工程においてバンク１０１等が形成された基板１００を搬送装置などから受け取り回転装置４０４に保持させる（ロード工程Ｓ５０１）。なお、図６に示すように、ロード工程（Ｓ５０１）の段階では、第一方向（図中ａ軸方向）と移動方向（図中Ｘ軸方向）とは平行となっている。 First, the substrate 100 on which the bank 101 or the like is formed in the previous process is received from the transfer device or the like and is held by the rotating device 404 (loading step S501). As shown in FIG. 6, at the stage of the loading step (S501), the first direction (a-axis direction in the figure) and the moving direction (X-axis direction in the figure) are parallel.
　次に、基板１００と吐出ヘッド４０１との相対的な移動方向（図中Ｘ軸方向）に対し、第一方向（図中ａ軸方向）が交差するように回転装置４０４を用いて基板１００を鉛直軸（図中Ｚ軸方向）周りに回転させる（回転工程Ｓ５０２）。 Next, the substrate 100 is moved using the rotation device 404 so that the first direction (a-axis direction in the drawing) intersects the relative movement direction (X-axis direction in the drawing) between the substrate 100 and the ejection head 401. It is rotated around the vertical axis (Z-axis direction in the figure) (rotation step S502).
　なお、第一方向と移動方向との角度（基板１００の回転角度）は特に限定されるものでは無いが、吐出口１０９の移動方向と直交する方向の広がり幅（図中吐出口１０９が配置される領域のＹ軸方向の幅）と回転した後の基板１００に配置されるセル１０２の領域の移動方向と直交する方向の広がり幅（図中セル１０２が配置される領域のＹ軸方向の幅）とが一致するまで基板１００を回転させることができる。また、セル１０２の対角線が移動方向と直交するまで基板１００を回転させてもよい。 Note that the angle between the first direction and the moving direction (the rotation angle of the substrate 100) is not particularly limited, but the spread width in the direction orthogonal to the moving direction of the discharge port 109 (the discharge port 109 in the figure is arranged). Width in the direction of the Y axis) and the spread width in the direction perpendicular to the moving direction of the area of the cell 102 arranged on the substrate 100 after rotation (the width in the Y axis direction of the area in which the cell 102 is arranged in the figure) ) Can be rotated until they match. Further, the substrate 100 may be rotated until the diagonal line of the cell 102 is orthogonal to the moving direction.
　図７は、製造工程において、回転装置により移動方向に対し第一方向が交差するように基板が回転された状態を示す平面図である。 FIG. 7 is a plan view showing a state in which the substrate is rotated by the rotating device so that the first direction intersects the moving direction in the manufacturing process.
　次に、発光寄与層の中の１層を形成する材料を含む原料液を吐出ヘッド４０１と基板１００とを相対的に移動方向（図中Ｘ軸方向）に移動させる（移動工程Ｓ５０３）。 Next, a raw material liquid containing a material for forming one of the light emission contributing layers is moved relative to the ejection head 401 and the substrate 100 in the movement direction (X-axis direction in the drawing) (movement step S503).
　次に、または、前記移動工程（Ｓ５０３）と同時期に、セル１０２と対向する位置に存在する吐出口１０９（図８参照）を制御装置４０３が選択して原料液を該当する吐出口１０９から吐出する（吐出工程含Ｓ５０４）。 Next, or at the same time as the moving step (S503), the control device 403 selects a discharge port 109 (see FIG. 8) that exists at a position facing the cell 102, and the raw material liquid is discharged from the corresponding discharge port 109. Discharge (including discharge step S504).
　以上により、所定のセル１０２の中に所定の原料液が塗布される。 As described above, a predetermined raw material liquid is applied in a predetermined cell 102.
　図９は、基板を回転させる前後のセルと吐出口１０９との関係を模式的に示す図である。なお、同図では説明を簡単にするため吐出口１０９の並びを移動方向（図中Ｘ軸方向）と直交するように仮に記載している。 FIG. 9 is a diagram schematically showing the relationship between the cells before and after the substrate is rotated and the discharge ports 109. In the figure, for ease of explanation, the arrangement of the discharge ports 109 is temporarily described so as to be orthogonal to the movement direction (X-axis direction in the figure).
　同図に示すように、基板１００を回転させなかった場合（図中２点鎖線で示す）に比べ、基板１００を回転させた場合（図中実線で示す）は、基板１００と吐出ヘッド４０１とを相対的に移動方向（図中Ｘ軸方向）に移動させることにより、より多くの吐出口１０９にセル１０２を対向させることが可能となる。（図９においては、基板１００を回転させなかった場合は、セル１０２に対向させることができる吐出口１０９の数は７であるのに対し、基板１００を回転させた場合は、セル１０２に対向させることができる吐出口１０９の数は１１となる。） As shown in the figure, when the substrate 100 is rotated (shown by a solid line in the drawing) compared to when the substrate 100 is not rotated (shown by a two-dot chain line in the drawing), By relatively moving in the movement direction (X-axis direction in the figure), it becomes possible to make the cells 102 face more discharge ports 109. (In FIG. 9, when the substrate 100 is not rotated, the number of discharge ports 109 that can be opposed to the cell 102 is 7, whereas when the substrate 100 is rotated, the cell 102 is opposed. The number of discharge ports 109 that can be made is 11.)
　従って、基板１００を回転し、セル１０２の長手（または短手）方向と移動方向とを交差させることでより多くの吐出口１０９から一つのセル１０２に対し原料液を吐出することができるため、吐出口１０９から吐出される原料液の状態のばらつきをより平均化することが可能となる。当該基板１００により得られた有機ＥＬ表示パネル３００に画像を表示した場合、均一な状態での表示を実現することが可能となる。 Therefore, by rotating the substrate 100 and crossing the longitudinal (or short) direction of the cell 102 and the moving direction, the raw material liquid can be discharged from a larger number of discharge ports 109 to one cell 102. Variations in the state of the raw material liquid discharged from the discharge port 109 can be further averaged. When an image is displayed on the organic EL display panel 300 obtained from the substrate 100, it is possible to realize display in a uniform state.
　また、図１０に示すように、吐出口１０９の一つに不具合が発生し（図中×印で示す）、制御装置４０３が当該不具合を把握していない場合や、他の吐出口１０９により調整しきれない場合は、不具合箇所から移動方向に延びた線上（図中破線で示す）にあるセル１０２は吐出口１０９の不具合が反映されるが、将来的に有機ＥＬ表示パネル３００として画像が表示された場合でも画像信号の走査線と平行、または、直交しない列のセル１０２に不具合が反映されているため、有機ＥＬ表示パネルを見ている人間に大きな違和感を与えることがない。 In addition, as shown in FIG. 10, when a defect occurs in one of the discharge ports 109 (indicated by x in the figure) and the control device 403 does not grasp the failure, adjustment is performed by another discharge port 109. If not, the cell 102 on the line extending in the moving direction from the defective part (indicated by a broken line in the figure) reflects the defect of the discharge port 109, but an image will be displayed as the organic EL display panel 300 in the future. Even in such a case, the defect is reflected in the cells 102 in a column that is parallel or not orthogonal to the scanning line of the image signal, so that a person who is looking at the organic EL display panel does not feel a great sense of incongruity.
　次に、基板１００上の必要なセル１０２に原料液が吐出されると、第一方向と移動方向とが沿うように回転装置４０４は基板１００を回転させる（逆回転工程Ｓ５０５）。 Next, when the raw material liquid is discharged to the necessary cells 102 on the substrate 100, the rotating device 404 rotates the substrate 100 so that the first direction and the moving direction are aligned (reverse rotation step S505).
　最後に基板１００を回転装置４０４から搬送装置などに移載する（アンロード工程Ｓ５０６）。 Finally, the substrate 100 is transferred from the rotating device 404 to a transfer device or the like (unloading step S506).
　以上により、基板１００は後工程にまわされ、有機ＥＬ表示パネル３００が製造される。 As described above, the substrate 100 is passed to the post-process, and the organic EL display panel 300 is manufactured.
　［変形例１］
　図１１は、第一方向と移動方向との他の交差状態を模式的に示す平面図である。 [Modification 1]
FIG. 11 is a plan view schematically showing another crossing state between the first direction and the moving direction.
　同図に示すように、基板１００は、複数の領域に分かれてセルが配置されたマザー基板であって、第一方向ａに長手方向が沿う矩形の第一セル１２１と、第二方向ｂに長手方向が沿う矩形の第二セル１２２とを備えている。吐出工程において基板１００は、移動方向（図中Ｘ軸方向）と第一方向ａと第二方向ｂとが形成する角の二等分線（同図中一点鎖線で示す）と平行となるように回転装置４０４により回転（本実施の形態の場合回転角４５度）している。 As shown in the figure, the substrate 100 is a mother substrate in which cells are arranged in a plurality of regions, and a rectangular first cell 121 having a longitudinal direction in the first direction a and a second direction b. And a rectangular second cell 122 along the longitudinal direction. In the discharging step, the substrate 100 is parallel to an angle bisector (indicated by a one-dot chain line in the figure) formed by the moving direction (X-axis direction in the figure), the first direction a, and the second direction b. The rotating device 404 is rotated (rotation angle is 45 degrees in this embodiment).
　これにより、一つの基板１００に異なる方向に向いた矩形のセル１０２が配置されている場合でも、いずれのセル１０２に対しても吐出口１０９のばらつきを均一化する効果を高めることが可能となる。 As a result, even when rectangular cells 102 oriented in different directions are arranged on one substrate 100, it is possible to enhance the effect of uniforming the variation of the discharge ports 109 for any of the cells 102. .
　（他の実施の形態）
　以上のように、本出願において開示する技術の例示として、実施の形態、および、変形例を説明した。しかしながら、本開示における技術は、これらに限定されず、適宜、変更、置き換え、付加、省略などを行った実施の形態にも適用可能である。また、上記実施の形態１や変形例で説明した各構成要素を組み合わせて、新たな実施の形態とすることも可能である。 (Other embodiments)
As described above, the embodiments and the modifications have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to these, and can also be applied to embodiments in which changes, replacements, additions, omissions, and the like are appropriately performed. Moreover, it is also possible to combine each component demonstrated in the said Embodiment 1 and the modification, and it can also be set as a new embodiment.
　たとえば、実施の形態において、有機ＥＬ表示パネル３００はテレビに備えられるものであるとした。しかし、有機ＥＬ表示パネル３００はテレビ以外に用いられるものであってもかまわない。例えば、有機ＥＬ表示パネル３００は、外部から入力される映像を表示するモニタ装置、広告媒体として使用されるデジタルサイネージ、ならびに、タッチパネルによってユーザの操作を受け付ける携帯端末、タブレット端末、および、テーブル型有機ＥＬ表示パネル３００等として実現されてもよい。 For example, in the embodiment, the organic EL display panel 300 is provided in a television. However, the organic EL display panel 300 may be used other than the television. For example, the organic EL display panel 300 includes a monitor device that displays video input from the outside, digital signage used as an advertising medium, a portable terminal that accepts user operations via a touch panel, a tablet terminal, and a table-type organic display It may be realized as the EL display panel 300 or the like.
　以上のように、本開示における技術の例示として、実施の形態を説明した。そのために、添付図面および詳細な説明を提供した。 As described above, the embodiments have been described as examples of the technology in the present disclosure. For this purpose, the accompanying drawings and detailed description are provided.
　したがって、添付図面および詳細な説明に記載された構成要素の中には、課題解決のために必須な構成要素だけでなく、上記技術を例示するために、課題解決のためには必須でない構成要素も含まれ得る。そのため、それらの必須ではない構成要素が添付図面や詳細な説明に記載されていることをもって、直ちに、それらの必須ではない構成要素が必須であるとの認定をするべきではない。 Accordingly, among the components described in the accompanying drawings and the detailed description, not only the components essential for solving the problem, but also the components not essential for solving the problem in order to illustrate the above technique. May also be included. Therefore, it should not be immediately recognized that these non-essential components are essential as those non-essential components are described in the accompanying drawings and detailed description.
　また、上述の実施の形態は、本開示における技術を例示するためのものであるから、請求の範囲またはその均等の範囲において種々の変更、置き換え、付加、省略などを行うことができる。 In addition, since the above-described embodiment is for illustrating the technique in the present disclosure, various modifications, replacements, additions, omissions, and the like can be performed within the scope of the claims or an equivalent scope thereof.
　例えば、上記実施の形態では、基板１００を回転装置４０４ごと吐出ヘッド４０１に対し移動するものとして説明したが、吐出工程において基板１００と吐出ヘッド４０１とが相対的に移動するものであれば、回転装置４０４は移動しなくてもかまわない。 For example, in the above embodiment, the substrate 100 is described as moving with respect to the ejection head 401 together with the rotation device 404. However, if the substrate 100 and the ejection head 401 move relatively in the ejection process, the substrate 100 rotates. The device 404 does not have to move.
　また、セル１０２が矩形の場合、セル１０２の対角線の一つと移動方向とが直交するように、第一方向と移動方向との交差角度を決定することが望ましい。これにより、多くの吐出口１０９を一つのセル１０２に対向させることが可能となる。 In addition, when the cell 102 is rectangular, it is desirable to determine the intersection angle between the first direction and the moving direction so that one of the diagonal lines of the cell 102 is orthogonal to the moving direction. Thereby, it becomes possible to make many discharge ports 109 face one cell 102.
　また、マザー基板ばかりでなく、一つの基板で一つの有機ＥＬ表示パネル３００を製造する場合にも本開示は適用可能である。 Further, the present disclosure can be applied not only to the mother substrate but also to manufacturing one organic EL display panel 300 with one substrate.
　本開示は、画像や文字、動画を表示する有機ＥＬ表示パネルの製造方法、および、有機ＥＬ表示パネルの製造システムであって、特に大型の有機ＥＬ表示パネルに適用可能である。具体的には、テレビ、モニタ表示、デジタルサイネージ、携帯端末、タブレット端末、および、テーブル型有機ＥＬ表示パネルなどの電子機器に、本開示は適用可能である。 The present disclosure is a manufacturing method of an organic EL display panel that displays images, characters, and moving images, and a manufacturing system of an organic EL display panel, and is particularly applicable to a large organic EL display panel. Specifically, the present disclosure is applicable to electronic devices such as a television, a monitor display, digital signage, a portable terminal, a tablet terminal, and a table-type organic EL display panel.
１００　基板
１０１　バンク
１０２　セル
１０９　吐出口
１１１　縦バンク
１１２　横バンク
１２１　第一セル
１２２　第二セル
３００　有機ＥＬ表示パネル
３９９　テレビ
４００　製造システム
４０１　吐出ヘッド
４０２　移動装置
４０３　制御装置
４０４　回転装置
４２１　レール 100 Substrate 101 Bank 102 Cell 109 Discharge port 111 Vertical bank 112 Horizontal bank 121 First cell 122 Second cell 300 Organic EL display panel 399 Television 400 Manufacturing system 401 Discharge head 402 Moving device 403 Control device 404 Rotating device 421 Rail

Claims (4)

  1. 　発光画素が形成される複数のセルが第一方向に沿って設けられ、第一方向に並んだセルの列が前記第一方向に直交する第二方向に並んで複数設けられた基板を備える有機ＥＬ表示パネルを製造する方法であって、
    　発光寄与層の中の１層を形成する材料を含む原料液を液滴状に吐出する複数の吐出口を並べて備える吐出ヘッドと前記基板とを相対的に移動させ、前記セルと対向する位置に存在する前記吐出口を選択して前記原料液を吐出する吐出工程を含み、
    　前記吐出工程において、前記基板と吐出ヘッドとの相対的な移動方向は、前記第一方向と直交を除いた交差をしている有機ＥＬ表示パネルの製造方法。     An organic device comprising a substrate in which a plurality of cells in which light emitting pixels are formed are provided along a first direction, and a plurality of cells arranged in a first direction are arranged in a second direction perpendicular to the first direction. A method for manufacturing an EL display panel, comprising:
    A discharge head provided with a plurality of discharge ports for discharging a raw material liquid containing a material for forming one layer of the light emission contribution layer in a droplet shape and the substrate are relatively moved so that the substrate faces the cell. Including a discharge step of selecting the existing discharge port and discharging the raw material liquid,
    In the ejection step, the organic EL display panel manufacturing method in which a relative movement direction of the substrate and the ejection head intersects with the first direction except for orthogonality.
  2. 　前記吐出工程の前に、前記移動方向と前記第一方向との関係が直交を除いた交差状態となるように前記基板を、回転装置を用いて回転させる回転工程を含み、
    　前記吐出工程においては、前記回転装置が前記基板を保持した状態で前記移動方向に沿って前記吐出ヘッドに対し相対的に移動する請求項１に記載の有機ＥＬ表示パネルの製造方法。     Before the discharging step, including a rotating step of rotating the substrate using a rotating device so that the relationship between the moving direction and the first direction is in an intersecting state excluding orthogonality,
    2. The method of manufacturing an organic EL display panel according to claim 1, wherein in the ejection step, the rotating device moves relative to the ejection head along the moving direction while holding the substrate. 3.
  3. 　前記基板は、前記第一方向に長手方向が沿う矩形の第一セルと、前記第二方向に長手方向が沿う矩形の第二セルとを備え、
    　前記吐出工程における前記移動方向は、前記第一方向と前記第二方向とが形成する角の二等分線と平行である請求項１または２に記載の有機ＥＬ表示パネルの製造方法。     The substrate includes a rectangular first cell whose longitudinal direction extends along the first direction, and a rectangular second cell whose longitudinal direction extends along the second direction,
    3. The method of manufacturing an organic EL display panel according to claim 1, wherein the moving direction in the ejection step is parallel to an angle bisector formed by the first direction and the second direction.
  4. 　発光画素が形成される複数のセルが第一方向に沿って設けられ、第一方向に並んだセルの列が前記第一方向に直交する第二方向に並んで複数設けられた基板を備える有機ＥＬ表示パネルを製造する製造システムであって、
    　発光寄与層の中の１層を形成する材料を含む原料液を液滴状に吐出する複数の吐出口を並べて備える吐出ヘッドと、
    　前記吐出ヘッドと前記基板とを相対的に移動させる移動装置と、
    　前記セルと対向する位置に存在する前記吐出口を選択して前記原料液を吐出させる制御装置と、
    　前記基板と前記吐出ヘッドとの相対的な移動方向と前記第一方向との関係が直交を除いた交差状態となるように前記基板を回転させる回転装置とを備える有機ＥＬ表示パネルの製造システム。     An organic device comprising a substrate in which a plurality of cells in which light emitting pixels are formed are provided along a first direction, and a plurality of cells arranged in a first direction are arranged in a second direction perpendicular to the first direction. A manufacturing system for manufacturing an EL display panel,
    A discharge head provided with a plurality of discharge ports arranged to discharge a raw material liquid containing a material forming one layer of the light emission contribution layer in a droplet shape;
    A moving device for relatively moving the ejection head and the substrate;
    A control device for discharging the raw material liquid by selecting the discharge port located at a position facing the cell;
    An organic EL display panel manufacturing system comprising: a rotating device that rotates the substrate so that a relationship between a relative movement direction of the substrate and the ejection head and the first direction is in an intersecting state excluding orthogonality.
PCT/JP2015/002211 2014-05-15 2015-04-23 Method for manufacturing organic el display panel and system for manufacturing organic el display panel WO2015174025A1 (en)

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