WO2017145926A1 - Manufacturing method for display panel - Google Patents

Manufacturing method for display panel Download PDF

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Publication number
WO2017145926A1
WO2017145926A1 PCT/JP2017/005839 JP2017005839W WO2017145926A1 WO 2017145926 A1 WO2017145926 A1 WO 2017145926A1 JP 2017005839 W JP2017005839 W JP 2017005839W WO 2017145926 A1 WO2017145926 A1 WO 2017145926A1
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WO
WIPO (PCT)
Prior art keywords
display panel
substrate
manufacturing
counter
cutting
Prior art date
Application number
PCT/JP2017/005839
Other languages
French (fr)
Japanese (ja)
Inventor
幸治 植田
幸二朗 西
Original Assignee
住友化学株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友化学株式会社 filed Critical 住友化学株式会社
Priority to CN201780012547.5A priority Critical patent/CN108702826B/en
Priority to KR1020187026881A priority patent/KR102597984B1/en
Publication of WO2017145926A1 publication Critical patent/WO2017145926A1/en

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    • 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
    • G02F1/133351—Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass

Definitions

  • the present invention relates to a method for manufacturing a display panel.
  • a liquid crystal layer is disposed between an element substrate and a counter substrate disposed to face each other, and an optical film such as a polarizing film (polarizing plate) is provided on the outer surface of the element substrate and the counter substrate. It has a bonded structure.
  • the display panel edge (frame portion) may be chipped or cracked. It was.
  • such a display panel with a chipped or cracked end portion may not be able to be commercialized from the viewpoint of demand for high dimensional accuracy due to a narrow frame and a reduction in strength of the end portion.
  • the alignment when the polarizing film is bonded may be performed with reference to the four corners (corner portions) of the panel, and the alignment of the polarizing film is relatively easy.
  • the alignment at the time of bonding a polarizing film becomes more difficult than in the case of a rectangular display panel.
  • a circular display panel since the inclination of the polarization axis of the polarizing film with respect to the display panel is not known, it is very difficult to align the polarizing film.
  • the present invention has been proposed in view of such conventional circumstances, and can suppress the occurrence of cracks and cracks at the edge of the display panel during manufacturing. Further, the present invention provides an optical film for a deformed display panel. It aims at providing the manufacturing method of the display panel which can manufacture a deformed display panel with a sufficient yield, raising the bonding precision.
  • a method for manufacturing a display panel wherein a counter mother board and an element mother board forming the display panel are arranged to face each other. And a step of preparing a panel manufacturing substrate in which a plurality of cells serving as the display panel are formed in a plane, and an optical film bonded to the outer surface of the counter mother substrate as a counter substrate of the display panel Cutting along the contours of the respective parts, and then removing the blank part of the optical film from the surface of the counter mother substrate while leaving the inside of each of the cut parts; and Cutting the counter substrate by cutting the counter mother substrate along the contour of each portion serving as the counter substrate; and the element mother substrate along the contour of each portion serving as the device substrate of the display panel. Turn off By manufacturing method of a display panel, which comprises a step of cutting the element substrate is provided.
  • disconnected There may be included a step of removing the blank portion of the optical film by peeling from the surface of the counter mother substrate while leaving the inside of the portion.
  • the counter substrate and the element substrate may be cut out in different shapes.
  • the contour when cutting the optical film may be made smaller than the contour when cutting the counter substrate or the element substrate.
  • the said display panel You may cut
  • the second alignment marks corresponding to a plurality of cells located around the cell to be cut may be referred to from among the cells.
  • cutting when the optical film is cut along the contour, cutting may be started at a position avoiding at least the wiring portion formed on the element substrate.
  • the cutting when the optical film is cut along the contour, the cutting may be started at least from the corner of the contour using a laser beam.
  • the blank portion may be peeled off along the diagonal direction of the optical film.
  • the planar shape of the display panel may be an irregular shape other than a rectangle.
  • the optical film may be a polarizing film.
  • the display panel may be a liquid crystal display panel.
  • the aspect of the present invention it is possible to suppress the occurrence of cracks and cracks at the edge of the display panel during production, and while further increasing the bonding accuracy of the optical film to the deformed display panel, It is possible to provide a manufacturing method of a display panel that can manufacture a deformed display panel with a high yield.
  • FIG. 1 An example of the liquid crystal display panel manufactured by applying this invention is shown, (a) is the top view, (b) is the sectional drawing. It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG.
  • FIG. 1A is a plan view showing the configuration of the liquid crystal display panel 1.
  • FIG. 1B is a cross-sectional view showing the configuration of the liquid crystal display panel 1.
  • the liquid crystal display panel 1 is disposed between the counter substrate 2 and the element substrate 3 that are disposed to face each other, and between the counter substrate 2 and the element substrate 3. And a liquid crystal layer 4.
  • the liquid crystal display panel 1 is a deformed display panel having a circular display surface S.
  • the “irregular display panel” referred to in the present invention means that the planar shape (display surface) is other than the rectangular shape (display surface) as compared with the conventional one having a rectangular shape (display surface) (rectangular display panel). Say things.
  • a deformed display panel for example, in addition to the above-described circular shape in accordance with the shape of the display surface when used for a smart watch or a vehicle-mounted meter, for example, an elliptical shape, a polygonal shape (for example, a triangle, a pentagon, Hexagons, octagons, etc.), free shape such as a shape in which at least one of the four corners of the rectangle is rounded or cut, or a shape in which a part of the rectangle is notched It is possible.
  • an elliptical shape for example, a triangle, a pentagon, Hexagons, octagons, etc.
  • free shape such as a shape in which at least one of the four corners of the rectangle is rounded or cut, or a shape in which a part of the rectangle is notched It is possible.
  • the counter substrate 2 is formed in a circular shape corresponding to the display surface S.
  • a counter electrode (not shown) is provided on the inner surface of the counter substrate 2.
  • a circular polarizing film 5 a is bonded to the outer surface of the counter substrate 2.
  • the polarizing film 5a may have the same diameter (outer shape) as the counter substrate 2, but preferably has a slightly smaller diameter (small outer shape) than the counter substrate 2 as in the present embodiment.
  • the element substrate 3 includes an element formation portion 3a formed in a circular shape corresponding to the display surface S, and a wiring formation portion 3b formed continuously from the element formation portion 3a with a width corresponding to the element formation portion 3a. have.
  • a plurality of pixel electrodes arranged in a matrix and a driving element (not shown) such as a TFT connected to each pixel electrode are provided on the inner surface of the element forming portion 3a.
  • the wiring forming portion 3b is provided with a plurality of wiring portions 6 connected to each driving element.
  • a circular polarizing film 5b is bonded to the outer surface of the element substrate 3 (element forming portion 3a).
  • the polarizing film 5b may have the same diameter (outer shape) as the element forming portion 3a, but preferably has a slightly smaller diameter (smaller outer shape) than the element forming portion 3a as in the present embodiment.
  • the liquid crystal layer 4 is formed by sealing the periphery between the counter substrate 2 and the element forming portion 3a (element substrate 3) in a circular shape with a sealing material 7, and injecting liquid crystal inside thereof.
  • the wiring part 6 is extended to the outside of a region (corresponding to the display surface S) surrounded by the sealing material 7.
  • FIGS. 2 to 9 are diagrams for sequentially explaining the manufacturing process of the liquid crystal display panel 1.
  • FIG. 2A is a plan view showing each process
  • FIG. FIG. 6 is a cross-sectional view showing each step.
  • FIG. 10 is a plan view showing an example of the arrangement of the first alignment mark AM1 and the second alignment mark AM2 on the panel manufacturing substrate 10 to be described later.
  • FIGS. 2A and 2B When the liquid crystal display panel 1 is manufactured, first, as shown in FIGS. 2A and 2B, a plurality of portions (hereinafter referred to as cells) 1A to be the liquid crystal display panel 1 are arranged in the plane.
  • a rectangular (rectangular) panel manufacturing substrate 10 is prepared.
  • the panel manufacturing substrate 10 is provided with a rectangular (rectangular) opposing mother substrate 2A and an element mother substrate 3A which are arranged to face each other.
  • a plurality of portions to be the counter substrate 2 are formed side by side on the counter mother substrate 2A.
  • a plurality of portions to be the element substrate 3 are formed side by side on the element mother substrate 3A.
  • each cell 1A is sealed in a circular shape with a sealing material 7, and a plurality of liquid crystal layers are injected by injecting liquid crystal therein. 4 is formed.
  • a rectangular polarizing film 5A is bonded to the outer surface of the counter mother board 2A in the panel manufacturing board 10, and the element mother board 3A.
  • a rectangular polarizing film 5B is bonded to the outer surface of the film.
  • the opposing mother substrate 2A is provided with a first alignment mark AM1 indicating a position where the polarizing film 5A is bonded.
  • the first alignment mark AM1 only needs to be provided in at least two places (three places in the present embodiment) of the four corners of the counter mother board 2A. Specifically, it is preferable to provide the first alignment mark AM1 at at least two corners along the same edge among the four corners of the counter mother board 2A.
  • the polarizing film 5A When the polarizing film 5A is bonded to the opposing mother substrate 2A, the polarizing film 5A is aligned with the opposing mother substrate 2A while referring to the first alignment mark AM1. Accordingly, the polarizing film 5A can be accurately and easily bonded to the opposing mother substrate 2A in a state where the four corners of the opposing mother substrate 2A and the four corners of the polarizing film 5A are aligned with each other.
  • the element mother board 3A is provided with a first alignment mark AM1 indicating the position where the polarizing film 5B is bonded, as in the counter mother board 2A.
  • the polarizing film 5B is aligned with the element mother board 3A while referring to the first alignment mark AM1. Accordingly, the polarizing film 5B can be accurately and easily bonded to the element mother board 3A in a state where the four corners of the element mother board 3A and the four corners of the polarizing film 5B are made to coincide with each other.
  • the polarizing film 5A bonded to the outer surface of the counter mother board 2A is cut into a circular shape along the contours of the respective parts to be the counter substrate 2. To do.
  • the polarizing film 5A When the polarizing film 5A is cut, the polarizing film 5A is cut along the outline of each polarizing film 5a while scanning the laser light using a laser beam (for example, carbon dioxide laser, wavelength 9.4 ⁇ m) L. To do. At this time, it is preferable that the cutting line by a laser beam is located slightly inside the outline of the part used as the counter substrate 2. Thereby, when cut
  • a laser beam for example, carbon dioxide laser, wavelength 9.4 ⁇ m
  • the cutting is started from a position that does not overlap with the wiring portion 6 formed on the portion (specifically, the wiring forming portion 3b) of the cell 1A. It is preferable. Since the cutting start position overlaps with the cutting end position, starting the cutting with the laser beam from the position avoiding the wiring unit 6 can prevent the wiring unit 6 from being damaged by the laser beam.
  • each polarizing film 5a can be cut out neatly along an outline.
  • the contour of each polarizing film 5a is circular as in the present embodiment, there is no corner portion in the contour, so it is not necessary to define the cutting start position.
  • the counter mother board 2A is provided with second alignment marks AM2 indicating the positions of the respective cells 1A.
  • second alignment marks AM2 may be provided around each cell 1A (two in this embodiment). Specifically, it is preferable that at least two are provided at regular intervals in the vicinity of each cell 1A.
  • alignment with respect to the portion of each cell 1A to be the counter substrate 2 is performed with reference to the first alignment mark AM1 and the second alignment mark AM2. Specifically, after the position of the first alignment mark AM1 is specified, the position of the cell 1A to be cut from the plurality of cells 1A is specified by the second alignment mark AM2. Thereby, alignment of the laser beam with respect to the cell 1A to be cut can be accurately performed.
  • the second alignment mark AM2 corresponding to the plurality of cells 1A located around the cell 1A to be cut may be referred to.
  • the laser light for the cell 1A to be cut is specified by specifying the positions of the plurality of cells 1A located around the cell 1A. Can be aligned with higher accuracy.
  • the inner side (polarizing film 5a) of each cut portion of the polarizing film 5A is left, and the blank portion of the polarizing film 5A is formed on the opposing mother substrate 2A. Remove from the surface. About the blank part of 5 A of polarizing films, it is preferable to peel along the diagonal direction of 5 A of polarizing films. Thereby, the blank part of the polarizing film 5A can be peeled off cleanly from the surface of the opposing mother substrate 2A.
  • the polarizing film 5B bonded to the outer surface of the element mother board 3A is used as the element substrate 3 (specifically, the element forming portion 3a). Cut into a circle along the contour of the part.
  • the laser light for example, carbon dioxide laser, wavelength 9.4 ⁇ m
  • L is used to scan the polarizing film 5B along the outline of each polarizing film 5b while scanning the laser light.
  • the cutting line by a laser beam is located slightly inside the outline of the part used as the element formation part 3a.
  • the polarizing film 5B is cut by laser light
  • cutting is started from a position that does not overlap with the wiring part 6 formed in the part (specifically, the wiring forming part 3b) that becomes the element substrate 3 of each cell 1A. It is preferable. Since the cutting start position overlaps with the cutting end position, starting the cutting with the laser beam from the position avoiding the wiring unit 6 can prevent the wiring unit 6 from being damaged by the laser beam.
  • each polarizing film 5b can be cut out beautifully along an outline.
  • the contour of each polarizing film 5b is circular as in the present embodiment, there is no corner portion in the contour, so that it is not necessary to particularly define the cutting start position.
  • disconnecting the polarizing film 5B is the same as that at the time of cut
  • the blank portion of the polarizing film 5B is formed on the element mother substrate 3A while leaving the inner side (polarizing film 5b) of each cut portion of the polarizing film 5B. Remove from the surface. About the blank part of polarizing film 5B, it is preferable to peel along the diagonal direction of polarizing film 5B. Thereby, the blank part of the polarizing film 5B can be peeled off cleanly from the surface of the element mother board 3A.
  • the opposing mother substrate 2A is cut into a circular shape along the contours of the respective portions to be the opposing substrate 2.
  • a scribe cutting process using a blade can be employed.
  • the scribing cutting process is not particularly limited, and a method capable of cutting the opposing mother substrate 2A along the outline of the portion to be the opposing substrate 2 may be employed.
  • each cell 1A with respect to the portion to be the counter substrate 2 when the counter mother substrate 2A is cut is the same as that when the polarizing film 5A is cut. That is, in the present embodiment, alignment with respect to the portion of each cell 1A that becomes the counter substrate 2 is performed with reference to the first alignment mark AM1 and the second alignment mark AM2. Thereby, the counter substrate 2 of each cell 1A can be accurately cut out from the counter mother substrate 2A.
  • the element mother board 3 ⁇ / b> A is cut into a circular shape along the outline of each part to be the element substrate 3.
  • scribe cutting using a blade can be employed.
  • the scribing cutting process is not particularly limited, and a method capable of cutting the element mother board 3A along the outline of the portion to be each element substrate 3 may be adopted.
  • each cell 1A with respect to the portion to be the element substrate 3 when the element mother substrate 3A is cut is the same as that when the polarizing film 5A is cut. That is, in the present embodiment, alignment with respect to a portion of each cell 1A to be the element substrate 3 is performed with reference to the first alignment mark AM1 and the second alignment mark AM2. Thereby, it is possible to cut out the element substrate 3 of each cell 1A with high accuracy from the element mother substrate 3A.
  • each cell 1A can be cut out from the panel manufacturing substrate 10, and a plurality of the liquid crystal display panels 1 can be manufactured in a lump.
  • the polarizing substrate 5A and the element mother board 2A and the element mother board 3A are bonded to each other by bonding the rectangular polarizing films 5A and 5B.
  • the polarizing films 5A and 5B can be accurately and easily bonded to the substrate 3A. Then, since each cell 1A is cut out from the panel manufacturing substrate 10, it is possible to keep the inclination of the polarization axes of the polarizing films 5a and 5b with respect to the liquid crystal display panel 1 with high accuracy.
  • the counter substrate 2 and the element substrate 3 having different shapes are cut out from the counter mother substrate 2A and the element mother substrate 3A, respectively, so that the odd-shaped display panel such as the liquid crystal display panel 1 is formed. Can be manufactured efficiently.
  • a polarizing film is formed on the counter substrate 2 and the element substrate 3 by performing alignment with respect to the portion to be each cell 1A while referring to the first alignment mark AM1 and the second alignment mark AM2. It is possible to improve the positional accuracy when bonding 5a and 5b and the positional accuracy when cutting out the counter substrate 2 and the element substrate 3 from the counter mother substrate 2A and the element mother substrate 3A.
  • the liquid crystal display panel 1 is an irregular display panel, the liquid crystal display panel 1 is improved in bonding accuracy of the polarizing films 5a and 5b while increasing the bonding accuracy of the liquid crystal display panel 1.
  • the display panel 1 can be manufactured with a high yield.
  • the polarizing films 5a and 5b and the mother substrates 2A and 3A are cut in the order of the opposing mother substrate 2A side and the element mother substrate 3A side.
  • the polarizing films 5b and 5a and the mother substrates 3A and 2A are cut in the reverse order, that is, in the order of the element mother substrate 3A side and the counter mother substrate 2A side. Also good.
  • disconnected is illustrated.
  • the polarizing films 5a and 5b bonded to the outer surface of the opposing mother substrate 2A or the element mother substrate 3A before the panel manufacturing substrate 10 is manufactured are cut using the same method as in the above embodiment. May be.
  • the opposing mother substrate 2A and the element mother substrate 3A are joined via the sealing material 7, and liquid crystal is injected to produce the panel manufacturing substrate 10. . Thereafter, the opposing mother substrate 2A and the element mother substrate 3A may be cut using the same method as in the above embodiment.
  • the polarizing films 5a and 5b are illustrated as an optical film, what is necessary is just to include the polarizing films 5a and 5b as an optical film, for example, an optical compensation film and brightness
  • first alignment mark AM1 and the second alignment mark AM2 may be shared. That is, a function as the second alignment mark AM2 indicating the position of the cell 1A is added to a part of the first alignment mark AM1, or the polarizing films 5a and 5b (optical films) are added to a part of the second alignment mark.
  • the function as 1st alignment mark AM1 which shows the pasting position of can be added.
  • the liquid crystal display panel 1 is not limited to the transmission type but may be a reflection type.
  • the polarizing film 5a optical film
  • the steps shown in FIGS. 6 and 7 described above are unnecessary.
  • another cutting method can be used for cutting the counter mother board 2A and the element mother board 3A.
  • cutting methods such as laser beam cutting and water jet cutting can be used.
  • the present invention is not limited to the case of manufacturing the liquid crystal display panel 1 described above, but can be widely applied to the case of manufacturing a display panel such as an organic EL panel.
  • the present invention is not limited to the case of manufacturing the above-described deformed display panel, but also applies to the case of manufacturing a rectangular display panel having a rectangular (rectangular) planar shape as in the past. Is possible.
  • SYMBOLS 1 Liquid crystal display panel (an irregular display panel) 1A ... Cell 2 ... Opposite substrate 2A ... Opposite mother substrate 3 ... Element substrate 3A ... Element mother substrate 3a ... Element formation part 3b ... Wiring formation part 4 ... Liquid crystal layer 5a, 5b ... Polarizing film (optical film) 6 ... wiring part 7 ... sealing material 10 ... panel manufacturing substrate S ... display surface AM1 ... first alignment mark AM2 ... second alignment mark L ... laser light

Abstract

Provided is a manufacturing method for a display panel in which occurrence of chipping and cracking at an edge of the display panel can be suppressed during manufacturing. The manufacturing method comprises: a step for cutting, along the contour of portions which are to form a counter substrate 2 of a display panel 1, an optical film attached on an outer surface of a counter motherboard, and then, peeling off and removing a margin portion of the optical film from the surface of the counter motherboard while leaving an inner side 5a of each of the cut portions; a step for cutting the counter motherboard along the contour of the portions which are to form the counter substrate 2 of the display panel 1; a step for cutting, along the contour of portions which are to form an element substrate 3 of the display panel 1, an optical film attached on an outer surface of an element motherboard, and then, peeling off and removing a margin portion of the optical film from the counter motherboard while leaving an inner side 5b of each of the cut portions; and a step for cutting the element motherboard along the contour of the portions which are to form the element board 3 of the display panel 1.

Description

表示パネルの製造方法Manufacturing method of display panel
　本発明は、表示パネルの製造方法に関する。 The present invention relates to a method for manufacturing a display panel.
　例えば、液晶表示パネルは、互いに対向して配置された素子基板と対向基板との間に液晶層を配置すると共に、素子基板と対向基板との外面に偏光フィルム（偏光板）などの光学フィルムを貼合した構造を有している。 For example, in a liquid crystal display panel, a liquid crystal layer is disposed between an element substrate and a counter substrate disposed to face each other, and an optical film such as a polarizing film (polarizing plate) is provided on the outer surface of the element substrate and the counter substrate. It has a bonded structure.
　このような液晶表示パネルを製造する際は、液晶表示パネルとなる部分（セル）が複数並んで形成されたパネル作製用基板を作製した後に、このパネル作製用基板から各セルを切り出すことで、複数の液晶表示パネルを一括で製造することが行われている（例えば、特許文献１，２を参照。）。 When manufacturing such a liquid crystal display panel, after preparing a panel manufacturing substrate formed with a plurality of portions (cells) to be a liquid crystal display panel, by cutting each cell from this panel manufacturing substrate, A plurality of liquid crystal display panels are manufactured in a lump (see, for example, Patent Documents 1 and 2).
特開２００４－２１９７５５号公報JP 2004-219755 A 特開２００７－２３２９１１号公報JP 2007-232911 A
　ところで、最近では、画像表示装置の薄型化及び表示画面の拡大化に伴って、薄型化及び狭額縁化された表示パネル、又は、スマートウォッチや車載メーターなどに使用される表示パネルとして、従来の平面形状が矩形（長方形）のもの（矩形表示パネルという。）とは異なる平面形状が矩形以外のもの（異形表示パネルという。）に対する要望が高まってきている。 By the way, recently, as a display panel that has been thinned and narrowed in frame with the thinning of an image display device and the enlargement of a display screen, or a display panel used for a smartwatch or an in-vehicle meter, There is an increasing demand for a planar shape other than a rectangular shape (referred to as an odd-shaped display panel) different from a rectangular shape (referred to as a rectangular display panel).
　しかしながら、表示パネルの薄型化に伴って、パネル作製用基板の強度が低下し、パネル作製用基板から各セルに切り出す際に、表示パネル端部（額縁部分）に欠けやヒビが生じることがあった。また、このような端部に欠けやヒビが生じた表示パネルでは、狭額縁化による高い寸法精度の要求や端部の強度低下の観点から、製品化できなくなることがあった。 However, as the thickness of the display panel is reduced, the strength of the panel manufacturing substrate is reduced, and when the panel manufacturing substrate is cut into each cell, the display panel edge (frame portion) may be chipped or cracked. It was. In addition, such a display panel with a chipped or cracked end portion may not be able to be commercialized from the viewpoint of demand for high dimensional accuracy due to a narrow frame and a reduction in strength of the end portion.
　一方、従来のような矩形表示パネルの場合は、偏光フィルムを貼合する際の位置合わせをパネルの四隅（角部）を基準に行えばよく、偏光フィルムの位置合わせが比較的容易である。これに対して、異形表示パネルの場合は、偏光フィルムを貼合する際の位置合わせが矩形表示パネルの場合よりも難しくなる。特に、円形表示パネルの場合は、その表示パネルに対する偏光フィルムの偏光軸の傾きがわからなくなるため、偏光フィルムを貼合する際の位置合わせが非常に難しくなる。 On the other hand, in the case of a conventional rectangular display panel, the alignment when the polarizing film is bonded may be performed with reference to the four corners (corner portions) of the panel, and the alignment of the polarizing film is relatively easy. On the other hand, in the case of a deformed display panel, the alignment at the time of bonding a polarizing film becomes more difficult than in the case of a rectangular display panel. In particular, in the case of a circular display panel, since the inclination of the polarization axis of the polarizing film with respect to the display panel is not known, it is very difficult to align the polarizing film.
　さらに、矩形表示パネルを製造する場合は、上述したパネル作製用基板を格子状に切断することで、矩形表示パネルを一括で切り出すことが可能である。これに対して、異形表示パネルを製造する場合は、異形表示パネルの輪郭に沿ってパネル作製用基板からセルを１つずつ切り出す必要がある。この場合、パネル作製用基板からセルを切り出す際の位置合わせが矩形表示パネルを製造する場合よりも難しくなる。 Furthermore, when manufacturing a rectangular display panel, it is possible to cut out the rectangular display panel in a lump by cutting the panel manufacturing substrate described above into a lattice shape. On the other hand, when manufacturing a deformed display panel, it is necessary to cut out cells one by one from the panel manufacturing substrate along the contour of the deformed display panel. In this case, alignment when cells are cut out from the panel manufacturing substrate is more difficult than when a rectangular display panel is manufactured.
　本発明は、このような従来の事情に鑑みて提案されたものであり、製造時における表示パネル端部への欠けやヒビの発生を抑制することができ、さらに、異形表示パネルに対する光学フィルムの貼合精度を高めつつ、異形表示パネルを歩留り良く製造できる表示パネルの製造方法を提供することを目的とする。 The present invention has been proposed in view of such conventional circumstances, and can suppress the occurrence of cracks and cracks at the edge of the display panel during manufacturing. Further, the present invention provides an optical film for a deformed display panel. It aims at providing the manufacturing method of the display panel which can manufacture a deformed display panel with a sufficient yield, raising the bonding precision.
　上記課題を解決するための手段として、本発明の態様に従えば、表示パネルの製造方法であって、前記表示パネルを形成する対向用母基板と素子用母基板とが対向して配置されると共に、前記表示パネルとなるセルが面内に複数並んで形成されたパネル作製用基板を準備する工程と、前記対向用母基板の外面に貼合された光学フィルムを前記表示パネルの対向基板となる各部分の輪郭に沿って切断した後に、切断された各部分の内側を残して前記光学フィルムの余白部分を前記対向用母基板の面上から剥離して除去する工程と、前記表示パネルの対向基板となる各部分の輪郭に沿って前記対向用母基板を切断することによって、前記対向基板を切り出す工程と、前記表示パネルの素子基板となる各部分の輪郭に沿って前記素子用母基板を切断することによって、前記素子基板を切り出す工程とを含むことを特徴とする表示パネルの製造方法が提供される。 As a means for solving the above-mentioned problems, according to an aspect of the present invention, there is provided a method for manufacturing a display panel, wherein a counter mother board and an element mother board forming the display panel are arranged to face each other. And a step of preparing a panel manufacturing substrate in which a plurality of cells serving as the display panel are formed in a plane, and an optical film bonded to the outer surface of the counter mother substrate as a counter substrate of the display panel Cutting along the contours of the respective parts, and then removing the blank part of the optical film from the surface of the counter mother substrate while leaving the inside of each of the cut parts; and Cutting the counter substrate by cutting the counter mother substrate along the contour of each portion serving as the counter substrate; and the element mother substrate along the contour of each portion serving as the device substrate of the display panel. Turn off By manufacturing method of a display panel, which comprises a step of cutting the element substrate is provided.
　また、前記態様の表示パネルの製造方法では、前記素子用母基板の外面に貼合された光学フィルムを前記表示パネルの素子基板となる各部分の輪郭に沿って切断した後に、切断された各部分の内側を残して前記光学フィルムの余白部分を前記対向用母基板の面上から剥離して除去する工程を含んでいてもよい。 Moreover, in the manufacturing method of the display panel of the said aspect, after cut | disconnecting the optical film bonded on the outer surface of the said motherboard for elements along the outline of each part used as the element substrate of the said display panel, each cut | disconnected There may be included a step of removing the blank portion of the optical film by peeling from the surface of the counter mother substrate while leaving the inside of the portion.
　また、前記態様の表示パネルの製造方法では、前記対向基板と前記素子基板とをそれぞれ異なる形状で切り出してもよい。 In the display panel manufacturing method of the above aspect, the counter substrate and the element substrate may be cut out in different shapes.
　また、前記態様の表示パネルの製造方法では、前記対向基板又は前記素子基板を切り出す際の前記輪郭をよりも、前記光学フィルムを切断する際の前記輪郭を小さくしてもよい。 Further, in the display panel manufacturing method of the above aspect, the contour when cutting the optical film may be made smaller than the contour when cutting the counter substrate or the element substrate.
　また、前記態様の表示パネルの製造方法では、前記光学フィルムを貼合する位置を示す第１のアライメントマークと、前記各セルの位置を示す第２のアライメントマークとを参照しながら、前記表示パネルの対向基板又は素子基板となる各部分の輪郭に沿って前記光学フィルムを切断してもよい。 Moreover, in the manufacturing method of the display panel of the said aspect, referring to the 1st alignment mark which shows the position which bonds the said optical film, and the 2nd alignment mark which shows the position of each said cell, the said display panel You may cut | disconnect the said optical film along the outline of each part used as a counter substrate or an element substrate.
　また、前記態様の表示パネルの製造方法では、前記セルの中から切断対象となるセルの周囲に位置する複数のセルに対応した前記第２のアライメントマークを参照してもよい。 Further, in the display panel manufacturing method of the above aspect, the second alignment marks corresponding to a plurality of cells located around the cell to be cut may be referred to from among the cells.
　また、前記態様の表示パネルの製造方法では、前記光学フィルムを前記輪郭に沿って切断する際に、少なくとも前記素子基板に形成された配線部を避けた位置から切断を開始してもよい。 In the display panel manufacturing method of the above aspect, when the optical film is cut along the contour, cutting may be started at a position avoiding at least the wiring portion formed on the element substrate.
　また、前記態様の表示パネルの製造方法では、前記光学フィルムを前記輪郭に沿って切断する際に、レーザー光を用いて、少なくとも前記輪郭の角部から切断を開始してもよい。 In the display panel manufacturing method of the above aspect, when the optical film is cut along the contour, the cutting may be started at least from the corner of the contour using a laser beam.
　また、前記態様の表示パネルの製造方法では、前記余白部分を前記光学フィルムの対角方向に沿って剥離してもよい。 In the method for manufacturing a display panel according to the aspect, the blank portion may be peeled off along the diagonal direction of the optical film.
　また、前記態様の表示パネルの製造方法では、前記表示パネルの平面形状が矩形以外の異型形状であってもよい。 In the display panel manufacturing method of the above aspect, the planar shape of the display panel may be an irregular shape other than a rectangle.
　また、前記態様の表示パネルの製造方法では、前記光学フィルムが偏光フィルムであってもよい。 In the method for manufacturing a display panel according to the above aspect, the optical film may be a polarizing film.
　また、前記態様の表示パネルの製造方法では、前記表示パネルが液晶表示パネルであってもよい。 Further, in the display panel manufacturing method of the above aspect, the display panel may be a liquid crystal display panel.
　以上のように、本発明の態様によれば、製造時における表示パネル端部への欠けやヒビの発生を抑制することができ、さらに、異形表示パネルに対する光学フィルムの貼合精度を高めつつ、異形表示パネルを歩留り良く製造できる表示パネルの製造方法を提供することが可能である。 As described above, according to the aspect of the present invention, it is possible to suppress the occurrence of cracks and cracks at the edge of the display panel during production, and while further increasing the bonding accuracy of the optical film to the deformed display panel, It is possible to provide a manufacturing method of a display panel that can manufacture a deformed display panel with a high yield.
本発明を適用して製造される液晶表示パネルの一例を示し、（ａ）はその平面図、（ｂ）はその断面図である。An example of the liquid crystal display panel manufactured by applying this invention is shown, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. 図１に示す液晶表示パネルの製造工程を順に説明するための図であり、（ａ）はその平面図、（ｂ）はその断面図である。It is a figure for demonstrating the manufacturing process of the liquid crystal display panel shown in FIG. 1 in order, (a) is the top view, (b) is the sectional drawing. パネル作製用基板における第１のアライメントマークと第２のアライメントマークとの配置の一例を示す平面図である。It is a top view which shows an example of arrangement | positioning of the 1st alignment mark and 2nd alignment mark in a board | substrate for panel manufacture.
　以下、本発明の実施形態について、図面を参照して詳細に説明する。
　なお、以下の説明で用いる図面は、特徴をわかりやすくするために、便宜上特徴となる部分を拡大して示している場合があり、各構成要素の寸法比率などが実際と同じであるとは限らないものとする。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In addition, in the drawings used in the following description, in order to make the features easy to understand, there are cases where the portions that become the features are enlarged for the sake of convenience, and the dimensional ratios of the respective components are not always the same as the actual ones. Make it not exist.
（表示パネル）
　先ず、本発明を適用して製造される表示パネルの一例として、例えば図１（ａ），（ｂ）に示す液晶表示パネル１について説明する。なお、図１（ａ）は、液晶表示パネル１の構成を示す平面図である。図１（ｂ）は、液晶表示パネル１の構成を示す断面図である。 (Display panel)
First, as an example of a display panel manufactured by applying the present invention, a liquid crystal display panel 1 shown in FIGS. 1A and 1B will be described. FIG. 1A is a plan view showing the configuration of the liquid crystal display panel 1. FIG. 1B is a cross-sectional view showing the configuration of the liquid crystal display panel 1.
　液晶表示パネル１は、図１（ａ），（ｂ）に示すように、互いに対向して配置された対向基板２及び素子基板３と、対向基板２と素子基板３との間に配置された液晶層４とを備えている。 As shown in FIGS. 1A and 1B, the liquid crystal display panel 1 is disposed between the counter substrate 2 and the element substrate 3 that are disposed to face each other, and between the counter substrate 2 and the element substrate 3. And a liquid crystal layer 4.
　液晶表示パネル１は、表示面Ｓが円形状となる異形表示パネルである。なお、本発明で言う「異形表示パネル」とは、従来のような平面形状（表示面）が矩形（長方形）のもの（矩形表示パネル）に対して、平面形状（表示面）が矩形以外のものを言う。したがって、異形表示パネルとしては、例えばスマートウォッチや車載メーターなどに使用される際の表示面の形状に合わせて、上述した円形以外にも、例えば、楕円形、多角形（例えば、三角形や五角形、六角形、八角形など。）、矩形の４つの角部のうち少なくとも１つの角部に丸みやカットを設けた形状、矩形の一部に切り欠きなどを設けた形状など、自由な形状とすることが可能である。 The liquid crystal display panel 1 is a deformed display panel having a circular display surface S. The “irregular display panel” referred to in the present invention means that the planar shape (display surface) is other than the rectangular shape (display surface) as compared with the conventional one having a rectangular shape (display surface) (rectangular display panel). Say things. Therefore, as a deformed display panel, for example, in addition to the above-described circular shape in accordance with the shape of the display surface when used for a smart watch or a vehicle-mounted meter, for example, an elliptical shape, a polygonal shape (for example, a triangle, a pentagon, Hexagons, octagons, etc.), free shape such as a shape in which at least one of the four corners of the rectangle is rounded or cut, or a shape in which a part of the rectangle is notched It is possible.
　対向基板２は、表示面Ｓに対応して円形状に形成されている。また、対向基板２の内面には、図示を省略する対向電極が設けられている。一方、対向基板２の外面には、円形状の偏光フィルム５ａが貼合されている。偏光フィルム５ａは、対向基板２と同じ径（外形）であってもよいが、本実施形態のように対向基板２よりも僅かに小径（小さい外形）であることが好ましい。 The counter substrate 2 is formed in a circular shape corresponding to the display surface S. A counter electrode (not shown) is provided on the inner surface of the counter substrate 2. On the other hand, a circular polarizing film 5 a is bonded to the outer surface of the counter substrate 2. The polarizing film 5a may have the same diameter (outer shape) as the counter substrate 2, but preferably has a slightly smaller diameter (small outer shape) than the counter substrate 2 as in the present embodiment.
　素子基板３は、表示面Ｓに対応して円形状に形成された素子形成部３ａと、この素子形成部３ａに対応した幅で素子形成部３ａに連続して形成された配線形成部３ｂとを有している。素子形成部３ａの内面には、図示を省略するものの、マトリックス状に並ぶ複数の画素電極と、各画素電極に接続されたＴＦＴなどの駆動素子（図示せず。）とが設けられている。配線形成部３ｂには、各駆動素子と接続された複数の配線部６が設けられている。一方、素子基板３（素子形成部３ａ）の外面には、円形状の偏光フィルム５ｂが貼合されている。偏光フィルム５ｂは、素子形成部３ａと同じ径（外形）であってもよいが、本実施形態のように素子形成部３ａよりも僅かに小径（小さい外形）であることが好ましい。 The element substrate 3 includes an element formation portion 3a formed in a circular shape corresponding to the display surface S, and a wiring formation portion 3b formed continuously from the element formation portion 3a with a width corresponding to the element formation portion 3a. have. Although not shown, a plurality of pixel electrodes arranged in a matrix and a driving element (not shown) such as a TFT connected to each pixel electrode are provided on the inner surface of the element forming portion 3a. The wiring forming portion 3b is provided with a plurality of wiring portions 6 connected to each driving element. On the other hand, a circular polarizing film 5b is bonded to the outer surface of the element substrate 3 (element forming portion 3a). The polarizing film 5b may have the same diameter (outer shape) as the element forming portion 3a, but preferably has a slightly smaller diameter (smaller outer shape) than the element forming portion 3a as in the present embodiment.
　液晶層４は、対向基板２と素子形成部３ａ（素子基板３）との間の周囲をシール材７で円形状に封止し、その内側に液晶を注入することによって形成されている。配線部６は、シール材７によって囲まれた領域（表示面Ｓに相当する。）の外側へと引き延ばされている。 The liquid crystal layer 4 is formed by sealing the periphery between the counter substrate 2 and the element forming portion 3a (element substrate 3) in a circular shape with a sealing material 7, and injecting liquid crystal inside thereof. The wiring part 6 is extended to the outside of a region (corresponding to the display surface S) surrounded by the sealing material 7.
（表示パネルの製造方法）
　次に、本発明を適用した表示パネルの製造方法として、上記液晶表示パネル１を製造する場合について、図２～図９、並びに図１０を参照しながら説明する。なお、図２～図９は、液晶表示パネル１の製造工程を順に説明するための図であり、各図の（ａ）は、各工程を示す平面図であり、各図の（ｂ）は、各工程を示す断面図である。図１０は、後述するパネル作製用基板１０における第１のアライメントマークＡＭ１と第２のアライメントマークＡＭ２との配置の一例を示す平面図である。 (Display panel manufacturing method)
Next, as a method for manufacturing a display panel to which the present invention is applied, a case where the liquid crystal display panel 1 is manufactured will be described with reference to FIGS. 2 to 9 and FIG. 2 to 9 are diagrams for sequentially explaining the manufacturing process of the liquid crystal display panel 1. FIG. 2A is a plan view showing each process, and FIG. FIG. 6 is a cross-sectional view showing each step. FIG. 10 is a plan view showing an example of the arrangement of the first alignment mark AM1 and the second alignment mark AM2 on the panel manufacturing substrate 10 to be described later.
　上記液晶表示パネル１を製造する際は、先ず、図２（ａ），（ｂ）に示すように、上記液晶表示パネル１となる部分（以下、セルという。）１Ａが面内に複数並んで形成された矩形（長方形）状のパネル作製用基板１０を準備する。パネル作製用基板１０は、互いに対向して配置された矩形（長方形）状の対向用母基板２Ａと素子用母基板３Ａとを備えている。対向用母基板２Ａには、上記対向基板２となる部分が複数並んで形成されている。
一方、素子用母基板３Ａには、上記素子基板３となる部分が複数並んで形成されている。
また、対向用母基板２Ａと素子用母基板３Ａとの間には、各セル１Ａの周囲をシール材７で円形状に封止し、その内側に液晶を注入することによって、複数の液晶層４が形成されている。 When the liquid crystal display panel 1 is manufactured, first, as shown in FIGS. 2A and 2B, a plurality of portions (hereinafter referred to as cells) 1A to be the liquid crystal display panel 1 are arranged in the plane. A rectangular (rectangular) panel manufacturing substrate 10 is prepared. The panel manufacturing substrate 10 is provided with a rectangular (rectangular) opposing mother substrate 2A and an element mother substrate 3A which are arranged to face each other. A plurality of portions to be the counter substrate 2 are formed side by side on the counter mother substrate 2A.
On the other hand, a plurality of portions to be the element substrate 3 are formed side by side on the element mother substrate 3A.
Further, between the opposing mother substrate 2A and the element mother substrate 3A, the periphery of each cell 1A is sealed in a circular shape with a sealing material 7, and a plurality of liquid crystal layers are injected by injecting liquid crystal therein. 4 is formed.
　次に、図３（ａ），（ｂ）に示すように、パネル作製用基板１０のうち、対向用母基板２Ａの外面に矩形状の偏光フィルム５Ａを貼合すると共に、素子用母基板３Ａの外面に矩形状の偏光フィルム５Ｂを貼合する。 Next, as shown in FIGS. 3A and 3B, a rectangular polarizing film 5A is bonded to the outer surface of the counter mother board 2A in the panel manufacturing board 10, and the element mother board 3A. A rectangular polarizing film 5B is bonded to the outer surface of the film.
　ここで、対向用母基板２Ａには、図１０に示すように、偏光フィルム５Ａを貼合する位置を示す第１のアライメントマークＡＭ１が設けられている。第１のアライメントマークＡＭ１は、対向用母基板２Ａの四隅のうちの少なくとも２箇所（本実施形態では３箇所）に設けられていればよい。具体的には、対向用母基板２Ａの四隅のうち、同一端辺に沿った少なくとも２つの隅に第１のアライメントマークＡＭ１を設けることが好ましい。 Here, as shown in FIG. 10, the opposing mother substrate 2A is provided with a first alignment mark AM1 indicating a position where the polarizing film 5A is bonded. The first alignment mark AM1 only needs to be provided in at least two places (three places in the present embodiment) of the four corners of the counter mother board 2A. Specifically, it is preferable to provide the first alignment mark AM1 at at least two corners along the same edge among the four corners of the counter mother board 2A.
　対向用母基板２Ａに偏光フィルム５Ａを貼合する際は、第１のアライメントマークＡＭ１を参照しながら、対向用母基板２Ａに対する偏光フィルム５Ａの位置合わせを行う。これにより、対向用母基板２Ａの四隅と偏光フィルム５Ａの四隅とを互いに一致させた状態で、対向用母基板２Ａに偏光フィルム５Ａを正確に且つ容易に貼合することができる。 When the polarizing film 5A is bonded to the opposing mother substrate 2A, the polarizing film 5A is aligned with the opposing mother substrate 2A while referring to the first alignment mark AM1. Accordingly, the polarizing film 5A can be accurately and easily bonded to the opposing mother substrate 2A in a state where the four corners of the opposing mother substrate 2A and the four corners of the polarizing film 5A are aligned with each other.
　また、素子用母基板３Ａには、図示を省略するものの、対向用母基板２Ａと同様に、偏光フィルム５Ｂを貼合する位置を示す第１のアライメントマークＡＭ１が設けられている。そして、この素子用母基板３Ａに偏光フィルム５Ｂを貼合する際は、第１のアライメントマークＡＭ１を参照しながら、素子用母基板３Ａに対する偏光フィルム５Ｂの位置合わせを行う。これにより、素子用母基板３Ａの四隅と偏光フィルム５Ｂの四隅とを互いに一致させた状態で、素子用母基板３Ａに偏光フィルム５Ｂを正確に且つ容易に貼合することができる。 Further, although not shown, the element mother board 3A is provided with a first alignment mark AM1 indicating the position where the polarizing film 5B is bonded, as in the counter mother board 2A. When the polarizing film 5B is bonded to the element mother board 3A, the polarizing film 5B is aligned with the element mother board 3A while referring to the first alignment mark AM1. Accordingly, the polarizing film 5B can be accurately and easily bonded to the element mother board 3A in a state where the four corners of the element mother board 3A and the four corners of the polarizing film 5B are made to coincide with each other.
　次に、図４（ａ），（ｂ）に示すように、対向用母基板２Ａの外面に貼合された偏光フィルム５Ａを上記対向基板２となる各部分の輪郭に沿って円形状に切断する。 Next, as shown in FIGS. 4A and 4B, the polarizing film 5A bonded to the outer surface of the counter mother board 2A is cut into a circular shape along the contours of the respective parts to be the counter substrate 2. To do.
　偏光フィルム５Ａを切断する際は、レーザー光（例えば、炭酸ガスレーザー、波長９．４μｍ）Ｌを用いて、このレーザー光を走査しながら、偏光フィルム５Ａを各偏光フィルム５ａの輪郭に沿って切断する。このとき、レーザー光による切断ラインは、対向基板２となる部分の輪郭よりも僅かに内側に位置することが好ましい。これにより、後述する対向用母基板２Ａを対向基板２となる部分の輪郭に沿って切断する際に、刃物が偏光フィルム５ａに接触することを防ぐことができる。 When the polarizing film 5A is cut, the polarizing film 5A is cut along the outline of each polarizing film 5a while scanning the laser light using a laser beam (for example, carbon dioxide laser, wavelength 9.4 μm) L. To do. At this time, it is preferable that the cutting line by a laser beam is located slightly inside the outline of the part used as the counter substrate 2. Thereby, when cut | disconnecting 2A of opposing mother boards mentioned later along the outline of the part used as the opposing board | substrate 2, it can prevent that a cutter contacts the polarizing film 5a.
　また、偏光フィルム５Ａをレーザー光により切断する際は、各セル１Ａの素子基板３となる部分（具体的には配線形成部３ｂ）に形成された配線部６と重ならない位置から切断を開始することが好ましい。切断の開始位置は切断の終了位置と重なるため、配線部６を避けた位置からレーザー光による切断を開始することで、レーザー光による配線部６の損傷等を防ぐことができる。 When the polarizing film 5A is cut with a laser beam, the cutting is started from a position that does not overlap with the wiring portion 6 formed on the portion (specifically, the wiring forming portion 3b) of the cell 1A. It is preferable. Since the cutting start position overlaps with the cutting end position, starting the cutting with the laser beam from the position avoiding the wiring unit 6 can prevent the wiring unit 6 from being damaged by the laser beam.
　また、偏光フィルム５Ａを切断する際は、各偏光フィルム５ａの輪郭のうち、少なくとも角部から切断を開始することが好ましい。これにより、各偏光フィルム５ａを輪郭に沿って綺麗に切り抜くことができる。但し、本実施形態のように、各偏光フィルム５ａの輪郭が円形となる場合は、輪郭に角部が存在しないため、特に切断の開始位置を規定する必要はない。 Moreover, when cutting the polarizing film 5A, it is preferable to start cutting at least from the corners of the outline of each polarizing film 5a. Thereby, each polarizing film 5a can be cut out neatly along an outline. However, when the contour of each polarizing film 5a is circular as in the present embodiment, there is no corner portion in the contour, so it is not necessary to define the cutting start position.
　なお、本実施形態では、レーザー光を用いて偏光フィルム５Ａを切断する場合を例示しているが、レーザー光以外にも、例えば刃物を用いて偏光フィルム５Ａの切断を行ってもよい。 In addition, in this embodiment, although the case where the polarizing film 5A is cut | disconnected using a laser beam is illustrated, you may cut | disconnect the polarizing film 5A using a blade other than a laser beam, for example.
　ところで、対向用母基板２Ａには、図１０に示すように、各セル１Ａの位置を示す第２のアライメントマークＡＭ２が設けられている。第２のアライメントマークＡＭ２は、例えば、各セル１Ａの周囲に少なくとも２つ（本実施形態では２つ）設けられていればよい。具体的には、各セル１Ａの近傍で一定の間隔で少なくとも２つ設けられていることが好ましい。 Incidentally, as shown in FIG. 10, the counter mother board 2A is provided with second alignment marks AM2 indicating the positions of the respective cells 1A. For example, at least two second alignment marks AM2 may be provided around each cell 1A (two in this embodiment). Specifically, it is preferable that at least two are provided at regular intervals in the vicinity of each cell 1A.
　本実施形態では、上述した第１のアライメントマークＡＭ１と第２のアライメントマークＡＭ２とを参照しながら、各セル１Ａの対向基板２となる部分に対する位置合わせを行う。具体的には、第１のアライメントマークＡＭ１の位置を特定した後に、複数のセル１Ａの中から切断対象となるセル１Ａの位置を第２のアライメントマークＡＭ２により特定する。これにより、切断対象となるセル１Ａに対するレーザー光の位置合わせを精度良く行うことができる。 In the present embodiment, alignment with respect to the portion of each cell 1A to be the counter substrate 2 is performed with reference to the first alignment mark AM1 and the second alignment mark AM2. Specifically, after the position of the first alignment mark AM1 is specified, the position of the cell 1A to be cut from the plurality of cells 1A is specified by the second alignment mark AM2. Thereby, alignment of the laser beam with respect to the cell 1A to be cut can be accurately performed.
　また、本実施形態では、切断対象となるセル１Ａの周囲に位置する複数のセル１Ａに対応した第２のアライメントマークＡＭ２を参照するようにしてもよい。この場合、複数のセル１Ａの中から切断対象となるセル１Ａの位置を特定する前に、その周囲に位置する複数のセル１Ａの位置を特定することで、切断対象となるセル１Ａに対するレーザー光の位置合わせを更に精度良く行うことができる。 In the present embodiment, the second alignment mark AM2 corresponding to the plurality of cells 1A located around the cell 1A to be cut may be referred to. In this case, before specifying the position of the cell 1A to be cut from the plurality of cells 1A, the laser light for the cell 1A to be cut is specified by specifying the positions of the plurality of cells 1A located around the cell 1A. Can be aligned with higher accuracy.
　次に、図５（ａ），（ｂ）に示すように、偏光フィルム５Ａの切断された各部分の内側（偏光フィルム５ａ）を残して、偏光フィルム５Ａの余白部分を対向用母基板２Ａの面上から剥離して除去する。偏光フィルム５Ａの余白部分については、偏光フィルム５Ａの対角方向に沿って剥離することが好ましい。これにより、対向用母基板２Ａの面上から偏光フィルム５Ａの余白部分を綺麗に引き剥がすことができる。 Next, as shown in FIGS. 5 (a) and 5 (b), the inner side (polarizing film 5a) of each cut portion of the polarizing film 5A is left, and the blank portion of the polarizing film 5A is formed on the opposing mother substrate 2A. Remove from the surface. About the blank part of 5 A of polarizing films, it is preferable to peel along the diagonal direction of 5 A of polarizing films. Thereby, the blank part of the polarizing film 5A can be peeled off cleanly from the surface of the opposing mother substrate 2A.
　次に、図６（ａ），（ｂ）に示すように、素子用母基板３Ａの外面に貼合された偏光フィルム５Ｂを上記素子基板３（具体的には素子形成部３ａ）となる各部分の輪郭に沿って円形状に切断する。 Next, as shown in FIGS. 6A and 6B, the polarizing film 5B bonded to the outer surface of the element mother board 3A is used as the element substrate 3 (specifically, the element forming portion 3a). Cut into a circle along the contour of the part.
　偏光フィルム５Ｂを切断する際は、レーザー光（例えば、炭酸ガスレーザー、波長９．４μｍ）Ｌを用いて、このレーザー光を走査しながら、偏光フィルム５Ｂを各偏光フィルム５ｂの輪郭に沿って切断する。このとき、レーザー光による切断ラインは、素子形成部３ａとなる部分の輪郭よりも僅かに内側に位置することが好ましい。これにより、後述する素子用母基板３Ａを素子基板３（素子形成部３ａ）となる部分の輪郭に沿って切断する際に、刃物が偏光フィルム５ｂに接触することを防ぐことができる。 When cutting the polarizing film 5B, the laser light (for example, carbon dioxide laser, wavelength 9.4 μm) L is used to scan the polarizing film 5B along the outline of each polarizing film 5b while scanning the laser light. To do. At this time, it is preferable that the cutting line by a laser beam is located slightly inside the outline of the part used as the element formation part 3a. Thereby, when cutting | disconnecting element | base mother board 3A mentioned later along the outline of the part used as element substrate 3 (element formation part 3a), it can prevent that a cutter contacts the polarizing film 5b.
　また、偏光フィルム５Ｂをレーザー光により切断する際は、各セル１Ａの素子基板３となる部分（具体的には配線形成部３ｂ）に形成された配線部６と重ならない位置から切断を開始することが好ましい。切断の開始位置は切断の終了位置と重なるため、配線部６を避けた位置からレーザー光による切断を開始することで、レーザー光による配線部６の損傷等を防ぐことができる。 Further, when the polarizing film 5B is cut by laser light, cutting is started from a position that does not overlap with the wiring part 6 formed in the part (specifically, the wiring forming part 3b) that becomes the element substrate 3 of each cell 1A. It is preferable. Since the cutting start position overlaps with the cutting end position, starting the cutting with the laser beam from the position avoiding the wiring unit 6 can prevent the wiring unit 6 from being damaged by the laser beam.
　また、偏光フィルム５Ｂを切断する際は、各偏光フィルム５ｂの輪郭のうち、少なくとも角部から切断を開始することが好ましい。これにより、各偏光フィルム５ｂを輪郭に沿って綺麗に切り抜くことができる。但し、本実施形態のように、各偏光フィルム５ｂの輪郭が円形となる場合は、輪郭に角部が存在しないため、特に切断の開始位置を規定する必要はない。 Moreover, when cutting the polarizing film 5B, it is preferable to start cutting at least from the corners of the outline of each polarizing film 5b. Thereby, each polarizing film 5b can be cut out beautifully along an outline. However, when the contour of each polarizing film 5b is circular as in the present embodiment, there is no corner portion in the contour, so that it is not necessary to particularly define the cutting start position.
　なお、本実施形態では、レーザー光を用いて偏光フィルム５Ｂを切断する場合を例示しているが、レーザー光以外にも、例えば刃物を用いて偏光フィルム５Ｂの切断を行ってもよい。 In addition, in this embodiment, although the case where the polarizing film 5B is cut | disconnected using a laser beam is illustrated, you may cut | disconnect the polarizing film 5B using a blade other than a laser beam, for example.
　また、偏光フィルム５Ｂを切断する際の各セル１Ａの素子基板３（素子形成部３ａ）となる部分に対する位置合わせは、上述した偏光フィルム５Ａを切断する際と同様である。
すなわち、本実施形態では、第１のアライメントマークＡＭ１と第２のアライメントマークＡＭ２とを参照しながら、各セル１Ａの素子基板３となる部分に対する位置合わせを行う。これにより、切断対象となるセル１Ａに対するレーザー光の位置合わせを精度良く行うことができる。 Moreover, the alignment with respect to the part used as the element substrate 3 (element formation part 3a) of each cell 1A at the time of cut | disconnecting the polarizing film 5B is the same as that at the time of cut | disconnecting the polarizing film 5A mentioned above.
That is, in the present embodiment, alignment with respect to a portion of each cell 1A to be the element substrate 3 is performed with reference to the first alignment mark AM1 and the second alignment mark AM2. Thereby, alignment of the laser beam with respect to the cell 1A to be cut can be accurately performed.
　次に、図７（ａ），（ｂ）に示すように、偏光フィルム５Ｂの切断された各部分の内側（偏光フィルム５ｂ）を残して、偏光フィルム５Ｂの余白部分を素子用母基板３Ａの面上から剥離して除去する。偏光フィルム５Ｂの余白部分については、偏光フィルム５Ｂの対角方向に沿って剥離することが好ましい。これにより、素子用母基板３Ａの面上から偏光フィルム５Ｂの余白部分を綺麗に引き剥がすことができる。 Next, as shown in FIGS. 7A and 7B, the blank portion of the polarizing film 5B is formed on the element mother substrate 3A while leaving the inner side (polarizing film 5b) of each cut portion of the polarizing film 5B. Remove from the surface. About the blank part of polarizing film 5B, it is preferable to peel along the diagonal direction of polarizing film 5B. Thereby, the blank part of the polarizing film 5B can be peeled off cleanly from the surface of the element mother board 3A.
　次に、図８（ａ），（ｂ）に示すように、対向用母基板２Ａを上記対向基板２となる各部分の輪郭に沿って円形状に切断する。対向用母基板２Ａを切断する際は、刃物を用いたスクライブ切断加工を採用することができる。スクライブ切断加工については、特に限定されるものではなく、対向用母基板２Ａを各対向基板２となる部分の輪郭に沿って切断可能な方法を採用すればよい。 Next, as shown in FIGS. 8A and 8B, the opposing mother substrate 2A is cut into a circular shape along the contours of the respective portions to be the opposing substrate 2. When cutting the opposing mother board 2A, a scribe cutting process using a blade can be employed. The scribing cutting process is not particularly limited, and a method capable of cutting the opposing mother substrate 2A along the outline of the portion to be the opposing substrate 2 may be employed.
　また、対向用母基板２Ａを切断する際の各セル１Ａの対向基板２となる部分に対する位置合わせは、上述した偏光フィルム５Ａを切断する際と同様である。すなわち、本実施形態では、第１のアライメントマークＡＭ１と第２のアライメントマークＡＭ２とを参照しながら、各セル１Ａの対向基板２となる部分に対する位置合わせを行う。これにより、対向用母基板２Ａから各セル１Ａの対向基板２を精度良く切り出すことが可能である。 Also, the alignment of each cell 1A with respect to the portion to be the counter substrate 2 when the counter mother substrate 2A is cut is the same as that when the polarizing film 5A is cut. That is, in the present embodiment, alignment with respect to the portion of each cell 1A that becomes the counter substrate 2 is performed with reference to the first alignment mark AM1 and the second alignment mark AM2. Thereby, the counter substrate 2 of each cell 1A can be accurately cut out from the counter mother substrate 2A.
　次に、図９（ａ），（ｂ）に示すように、素子用母基板３Ａを上記素子基板３となる各部分の輪郭に沿って円形状に切断する。素子用母基板３Ａを切断する際は、刃物を用いたスクライブ切断加工を採用することができる。スクライブ切断加工については、特に限定されるものではなく、素子用母基板３Ａを各素子基板３となる部分の輪郭に沿って切断可能な方法を採用すればよい。 Next, as shown in FIGS. 9A and 9B, the element mother board 3 </ b> A is cut into a circular shape along the outline of each part to be the element substrate 3. When cutting the element mother board 3A, scribe cutting using a blade can be employed. The scribing cutting process is not particularly limited, and a method capable of cutting the element mother board 3A along the outline of the portion to be each element substrate 3 may be adopted.
　また、素子用母基板３Ａを切断する際の各セル１Ａの素子基板３となる部分に対する位置合わせは、上述した偏光フィルム５Ａを切断する際と同様である。すなわち、本実施形態では、第１のアライメントマークＡＭ１と第２のアライメントマークＡＭ２とを参照しながら、各セル１Ａの素子基板３となる部分に対する位置合わせを行う。これにより、素子用母基板３Ａから各セル１Ａの素子基板３を精度良く切り出すことが可能である。 Further, the alignment of each cell 1A with respect to the portion to be the element substrate 3 when the element mother substrate 3A is cut is the same as that when the polarizing film 5A is cut. That is, in the present embodiment, alignment with respect to a portion of each cell 1A to be the element substrate 3 is performed with reference to the first alignment mark AM1 and the second alignment mark AM2. Thereby, it is possible to cut out the element substrate 3 of each cell 1A with high accuracy from the element mother substrate 3A.
　以上のような工程を経ることによって、パネル作製用基板１０から各セル１Ａを切り出すことができ、複数の上記液晶表示パネル１を一括で製造することが可能である。 By passing through the above processes, each cell 1A can be cut out from the panel manufacturing substrate 10, and a plurality of the liquid crystal display panels 1 can be manufactured in a lump.
　上述したように、上記液晶表示パネル１のような異形表示パネルを製造する場合、矩形表示パネルを製造する場合に比べて、パネル作製用基板１０からセル１Ａを切り出す際の位置合わせや、対向基板２及び素子基板３に偏光フィルム５ａ，５ｂを貼合する際の位置合わせが非常に難しくなる。 As described above, when manufacturing a deformed display panel such as the liquid crystal display panel 1, as compared with the case of manufacturing a rectangular display panel, alignment when cutting the cell 1 </ b> A from the panel manufacturing substrate 10 and the counter substrate are performed. 2 and the alignment when the polarizing films 5a and 5b are bonded to the element substrate 3 become very difficult.
　これに対して、本実施形態では、矩形状の対向用母基板２Ａ及び素子用母基板３Ａに矩形状の偏光フィルム５Ａ，５Ｂを貼合することによって、これら対向用母基板２Ａ及び素子用母基板３Ａに偏光フィルム５Ａ，５Ｂを正確に且つ容易に貼合することができる。その後、パネル作製用基板１０から各セル１Ａを切り出すことから、液晶表示パネル１に対する偏光フィルム５ａ，５ｂの偏光軸の傾きを高精度に保つことが可能である。 On the other hand, in this embodiment, the polarizing substrate 5A and the element mother board 2A and the element mother board 3A are bonded to each other by bonding the rectangular polarizing films 5A and 5B. The polarizing films 5A and 5B can be accurately and easily bonded to the substrate 3A. Then, since each cell 1A is cut out from the panel manufacturing substrate 10, it is possible to keep the inclination of the polarization axes of the polarizing films 5a and 5b with respect to the liquid crystal display panel 1 with high accuracy.
　また、本実施形態では、対向用母基板２Ａ及び素子用母基板３Ａから、互いに形状の異なる対向基板２及び素子基板３をそれぞれ別々に切り出すことで、上記液晶表示パネル１のような異形表示パネルを効率良く製造することができる。 In the present embodiment, the counter substrate 2 and the element substrate 3 having different shapes are cut out from the counter mother substrate 2A and the element mother substrate 3A, respectively, so that the odd-shaped display panel such as the liquid crystal display panel 1 is formed. Can be manufactured efficiently.
　また、本実施形態では、第１のアライメントマークＡＭ１と第２のアライメントマークＡＭ２とを参照しながら、各セル１Ａとなる部分に対する位置合わせを行うことで、対向基板２及び素子基板３に偏光フィルム５ａ，５ｂを貼合する際の位置精度と、対向用母基板２Ａ及び素子用母基板３Ａから対向基板２及び素子基板３を切り出す際の位置精度を高めることが可能である。 Further, in the present embodiment, a polarizing film is formed on the counter substrate 2 and the element substrate 3 by performing alignment with respect to the portion to be each cell 1A while referring to the first alignment mark AM1 and the second alignment mark AM2. It is possible to improve the positional accuracy when bonding 5a and 5b and the positional accuracy when cutting out the counter substrate 2 and the element substrate 3 from the counter mother substrate 2A and the element mother substrate 3A.
　したがって、本実施形態の製造方法によれば、液晶表示パネル１が異形表示パネルとなる場合であっても、このような液晶表示パネル１に対する偏光フィルム５ａ，５ｂの貼合精度を高めつつ、液晶表示パネル１を歩留り良く製造することが可能である。 Therefore, according to the manufacturing method of the present embodiment, even when the liquid crystal display panel 1 is an irregular display panel, the liquid crystal display panel 1 is improved in bonding accuracy of the polarizing films 5a and 5b while increasing the bonding accuracy of the liquid crystal display panel 1. The display panel 1 can be manufactured with a high yield.
　なお、本発明は、上記実施形態のものに必ずしも限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。
　具体的に、上記実施形態では、対向用母基板２Ａ側と素子用母基板３Ａ側との順で、各偏光フィルム５ａ，５ｂの切断、並びに、各母基板２Ａ，３Ａの切断を行っているが、それとは逆の順序、すなわち、素子用母基板３Ａ側と対向用母基板２Ａ側との順で、各偏光フィルム５ｂ，５ａの切断、並びに、各母基板３Ａ，２Ａの切断を行ってもよい。 In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
Specifically, in the above embodiment, the polarizing films 5a and 5b and the mother substrates 2A and 3A are cut in the order of the opposing mother substrate 2A side and the element mother substrate 3A side. However, the polarizing films 5b and 5a and the mother substrates 3A and 2A are cut in the reverse order, that is, in the order of the element mother substrate 3A side and the counter mother substrate 2A side. Also good.
　また、上記実施形態では、パネル作製用基板１０を作製（準備）した後に、対向用母基板２Ａ又は素子用母基板３Ａの外面に貼合された偏光フィルム５ａ，５ｂを切断する場合を例示しているが、パネル作製用基板１０を作製する前の対向用母基板２Ａ又は素子用母基板３Ａの外面に貼合された偏光フィルム５ａ，５ｂを、上記実施形態と同様の方法を用いて切断してもよい。 Moreover, in the said embodiment, after producing the board | substrate 10 for panel production (preparation), the case where the polarizing films 5a and 5b bonded by the outer surface of 2A of opposition mother boards or 3A of element mother boards are cut | disconnected is illustrated. However, the polarizing films 5a and 5b bonded to the outer surface of the opposing mother substrate 2A or the element mother substrate 3A before the panel manufacturing substrate 10 is manufactured are cut using the same method as in the above embodiment. May be.
　この場合、偏光フィルム５ａ，５ｂを切断除去した後に、対向用母基板２Ａと素子用母基板３Ａとをシール材７を介して接合し、液晶を注入して、パネル作製用基板１０を作製する。その後、上記実施形態と同様の方法を用いて、対向用母基板２Ａと素子用母基板３Ａとの切断を行えばよい。 In this case, after the polarizing films 5a and 5b are cut and removed, the opposing mother substrate 2A and the element mother substrate 3A are joined via the sealing material 7, and liquid crystal is injected to produce the panel manufacturing substrate 10. . Thereafter, the opposing mother substrate 2A and the element mother substrate 3A may be cut using the same method as in the above embodiment.
　また、光学フィルムとして、偏光フィルム５ａ，５ｂを例示しているが、光学フィルムとしては、偏光フィルム５ａ，５ｂを含むものであればよく、偏光フィルム５ａ，５ｂと共に、例えば、光学補償フィルムや輝度向上フィルム、反射防止フィルムなどの機能フィルムを積層することも可能である。 Moreover, although the polarizing films 5a and 5b are illustrated as an optical film, what is necessary is just to include the polarizing films 5a and 5b as an optical film, for example, an optical compensation film and brightness | luminance with the polarizing films 5a and 5b. It is also possible to laminate functional films such as improvement films and antireflection films.
　また、第１のアライメントマークＡＭ１と第２のアライメントマークＡＭ２との一部を共有化してもよい。すなわち、第１のアライメントマークＡＭ１の一部にセル１Ａの位置を示す第２のアライメントマークＡＭ２としての機能を付加したり、第２のアライメントマークの一部に偏光フィルム５ａ，５ｂ（光学フィルム）の貼合位置を示す第１のアライメントマークＡＭ１としての機能を付加したりすることができる。 Further, a part of the first alignment mark AM1 and the second alignment mark AM2 may be shared. That is, a function as the second alignment mark AM2 indicating the position of the cell 1A is added to a part of the first alignment mark AM1, or the polarizing films 5a and 5b (optical films) are added to a part of the second alignment mark. The function as 1st alignment mark AM1 which shows the pasting position of can be added.
　また、液晶表示パネル１は、透過型に限らず、反射型であってもよい。反射型の場合、対向基板２のみに偏光フィルム５ａ（光学フィルム）が配置された構成となるため、上述した図６及び図７に示す工程が不要となる。 Further, the liquid crystal display panel 1 is not limited to the transmission type but may be a reflection type. In the case of the reflection type, since the polarizing film 5a (optical film) is disposed only on the counter substrate 2, the steps shown in FIGS. 6 and 7 described above are unnecessary.
　また、対向用母基板２Ａや素子用母基板３Ａの切断には、上述した刃物を用いたスクライブ切断加工以外にも、別の切断方法を用いることができる。具体的には、レーザー光切断加工やウォータージェット切断加工等などの切断方法を用いることができる。 Further, in addition to the scribe cutting process using the above-described blade, another cutting method can be used for cutting the counter mother board 2A and the element mother board 3A. Specifically, cutting methods such as laser beam cutting and water jet cutting can be used.
　また、本発明は、上述した液晶表示パネル１を製造する場合に限らず、例えば有機ＥＬパネルなどの表示パネルを製造する場合に対して、本発明を幅広く適用することが可能である。 Further, the present invention is not limited to the case of manufacturing the liquid crystal display panel 1 described above, but can be widely applied to the case of manufacturing a display panel such as an organic EL panel.
　また、本発明は、上述した異形表示パネルを製造する場合に限らず、従来のような平面形状が矩形（長方形）となる矩形表示パネルを製造する場合に対しても、本発明を適用することが可能である。特に、本発明によれば、薄型化及び狭額縁化された矩形表示パネルの製造時において、表示パネル端部に欠けやヒビが発生することを抑制することが可能である。 In addition, the present invention is not limited to the case of manufacturing the above-described deformed display panel, but also applies to the case of manufacturing a rectangular display panel having a rectangular (rectangular) planar shape as in the past. Is possible. In particular, according to the present invention, it is possible to suppress the occurrence of chipping or cracks at the edge of the display panel when manufacturing a thin and narrow frame display panel.
　１…液晶表示パネル（異形表示パネル）　１Ａ…セル　２…対向基板　２Ａ…対向用母基板　３…素子基板　３Ａ…素子用母基板　３ａ…素子形成部　３ｂ…配線形成部　４…液晶層　５ａ，５ｂ…偏光フィルム（光学フィルム）　６…配線部　７…シール材　１０…パネル作製用基板　Ｓ…表示面　ＡＭ１…第１のアライメントマーク　ＡＭ２…第２のアライメントマーク　Ｌ…レーザー光 DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel (an irregular display panel) 1A ... Cell 2 ... Opposite substrate 2A ... Opposite mother substrate 3 ... Element substrate 3A ... Element mother substrate 3a ... Element formation part 3b ... Wiring formation part 4 ... Liquid crystal layer 5a, 5b ... Polarizing film (optical film) 6 ... wiring part 7 ... sealing material 10 ... panel manufacturing substrate S ... display surface AM1 ... first alignment mark AM2 ... second alignment mark L ... laser light

Claims (12)

  1. 　表示パネルの製造方法であって、
    　前記表示パネルを形成する対向用母基板と素子用母基板とが対向して配置されると共に、前記表示パネルとなるセルが面内に複数並んで形成されたパネル作製用基板を準備する工程と、
    　前記対向用母基板の外面に貼合された光学フィルムを前記表示パネルの対向基板となる各部分の輪郭に沿って切断した後に、切断された各部分の内側を残して前記光学フィルムの余白部分を前記対向用母基板の面上から剥離して除去する工程と、
    　前記表示パネルの対向基板となる各部分の輪郭に沿って前記対向用母基板を切断することによって、前記対向基板を切り出す工程と、
    　前記表示パネルの素子基板となる各部分の輪郭に沿って前記素子用母基板を切断することによって、前記素子基板を切り出す工程とを含むことを特徴とする表示パネルの製造方法。     A method of manufacturing a display panel,
    Preparing a panel manufacturing substrate in which a counter mother substrate and an element mother substrate forming the display panel are arranged to face each other, and a plurality of cells serving as the display panel are arranged in a plane; ,
    After the optical film bonded to the outer surface of the counter mother substrate is cut along the outline of each portion that becomes the counter substrate of the display panel, the blank portion of the optical film is left inside the cut portions. And removing from the surface of the counter mother substrate,
    Cutting the counter substrate by cutting the counter mother substrate along the outline of each part that becomes the counter substrate of the display panel;
    And a step of cutting the element substrate by cutting the element mother substrate along an outline of each portion to be an element substrate of the display panel.
  2. 　前記素子用母基板の外面に貼合された光学フィルムを前記表示パネルの素子基板となる各部分の輪郭に沿って切断した後に、切断された各部分の内側を残して前記光学フィルムの余白部分を前記対向用母基板の面上から剥離して除去する工程を含むことを特徴とする請求項１に記載の表示パネルの製造方法。 After cutting the optical film bonded to the outer surface of the element mother board along the outline of each part to be the element substrate of the display panel, the blank part of the optical film leaving the inside of each cut part 2. The method of manufacturing a display panel according to claim 1, further comprising a step of peeling and removing the substrate from the surface of the counter mother substrate.
  3. 　前記対向基板と前記素子基板とをそれぞれ異なる形状で切り出すことを特徴とする請求項１又は２に記載の表示パネルの製造方法。 3. The method for manufacturing a display panel according to claim 1, wherein the counter substrate and the element substrate are cut out in different shapes.
  4. 　前記対向基板又は前記素子基板を切り出す際の前記輪郭をよりも、前記光学フィルムを切断する際の前記輪郭を小さくすることを特徴とする請求項１～３の何れか一項に記載の表示パネルの製造方法。 The display panel according to any one of claims 1 to 3, wherein the contour when the optical film is cut is made smaller than the contour when the counter substrate or the element substrate is cut out. Manufacturing method.
  5. 　前記光学フィルムを貼合する位置を示す第１のアライメントマークと、前記各セルの位置を示す第２のアライメントマークとを参照しながら、前記表示パネルの対向基板又は素子基板となる各部分の輪郭に沿って前記光学フィルムを切断すること特徴とする請求項１～４の何れか一項を特徴とする表示パネルの製造方法。 While referring to the first alignment mark indicating the position where the optical film is bonded and the second alignment mark indicating the position of each cell, the contour of each part that becomes the counter substrate or the element substrate of the display panel The method for manufacturing a display panel according to any one of claims 1 to 4, wherein the optical film is cut along a line.
  6. 　前記セルの中から切断対象となるセルの周囲に位置する複数のセルに対応した前記第２のアライメントマークを参照することを特徴とする請求項５に記載の表示パネルの製造方法。 6. The method of manufacturing a display panel according to claim 5, wherein the second alignment mark corresponding to a plurality of cells located around the cell to be cut is referred to among the cells.
  7. 　前記光学フィルムを前記輪郭に沿って切断する際に、少なくとも前記素子基板に形成された配線部を避けた位置から切断を開始すること特徴とする請求項１～６の何れか一項を特徴とする表示パネルの製造方法。 7. When cutting the optical film along the contour, the cutting is started at a position avoiding at least a wiring portion formed on the element substrate. Display panel manufacturing method.
  8. 　前記光学フィルムを前記輪郭に沿って切断する際に、レーザー光を用いて、少なくとも前記輪郭の角部から切断を開始すること特徴とする請求項１～７の何れか一項を特徴とする表示パネルの製造方法。 The display according to any one of claims 1 to 7, wherein when the optical film is cut along the contour, the cutting is started at least from a corner portion of the contour using a laser beam. Panel manufacturing method.
  9. 　前記余白部分を前記光学フィルムの対角方向に沿って剥離することを特徴とする請求項１～８の何れか一項に記載の表示パネルの製造方法。 The method for manufacturing a display panel according to any one of claims 1 to 8, wherein the blank portion is peeled along a diagonal direction of the optical film.
  10. 　前記表示パネルの平面形状が矩形以外の異型形状であることを特徴とする請求項１～９の何れか一項に記載の表示パネルの製造方法。 10. The method for manufacturing a display panel according to claim 1, wherein the planar shape of the display panel is an irregular shape other than a rectangle.
  11. 　前記光学フィルムが偏光フィルムであることを特徴とする請求項１～１０の何れか一項に記載の表示パネルの製造方法。 11. The display panel manufacturing method according to claim 1, wherein the optical film is a polarizing film.
  12. 　前記表示パネルが液晶表示パネルであることを特徴とする請求項１～１１の何れか一項に記載の表示パネルの製造方法。 The method for manufacturing a display panel according to any one of claims 1 to 11, wherein the display panel is a liquid crystal display panel.
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