WO2011125284A1 - 液晶表示パネルの製造方法 - Google Patents
液晶表示パネルの製造方法 Download PDFInfo
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- WO2011125284A1 WO2011125284A1 PCT/JP2011/001251 JP2011001251W WO2011125284A1 WO 2011125284 A1 WO2011125284 A1 WO 2011125284A1 JP 2011001251 W JP2011001251 W JP 2011001251W WO 2011125284 A1 WO2011125284 A1 WO 2011125284A1
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- WIPO (PCT)
- Prior art keywords
- sealing material
- substrate
- liquid crystal
- alignment film
- display panel
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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
- G02F1/1341—Filling or closing of cells
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
Definitions
- the present invention relates to a method for manufacturing a liquid crystal display panel, and more particularly to a method for manufacturing a liquid crystal display panel in a vertical alignment mode.
- the liquid crystal display panel is, for example, a TFT substrate provided with a thin film transistor (hereinafter also referred to as “TFT”) and the like and a TFT substrate, and a color filter (hereinafter referred to as “CF”).
- TFT thin film transistor
- CF color filter
- a liquid crystal layer provided between the TFT substrate and the CF substrate, an alignment film provided on each surface of the TFT substrate and the liquid crystal layer side of the CF substrate, and the TFT substrate.
- a CF substrate and a sealing material provided in a frame shape for sealing a liquid crystal layer between the TFT substrate and the CF substrate.
- Patent Document 1 discloses a sealing material forming step of forming a sealing material made of a single material in a shape that completely surrounds a region in which a liquid crystal layer is enclosed on a CF substrate, and a region surrounded by the sealing material. At least a liquid crystal display panel is formed by cutting the CF substrate, the TFT substrate, and the sealing material in a region where the sealing material is disposed, and a liquid crystal sealing process in which the CF substrate and the TFT substrate are bonded in a state where the liquid crystal layer is sealed.
- a manufacturing method of a liquid crystal display panel including an end face forming step for forming a part of end faces is disclosed. Patent Document 1 describes that, according to this, it is possible to manufacture a liquid crystal display panel having a smaller distance between the actual liquid crystal display region and the end face of the liquid crystal display panel.
- the liquid crystal display device in the vertical alignment mode is configured such that the liquid crystal molecules constituting the liquid crystal layer are aligned substantially perpendicular to the substrate surface when no voltage is applied to the liquid crystal layer. Excellent viewing angle characteristics in black display.
- the affinity between the alignment film and the sealing material is low. Therefore, in particular, in a liquid crystal display panel for mobile use, when the sealing material is overlapped on the peripheral edge of the alignment film to narrow the frame, the sealing material on the alignment film has low wettability. By being repelled on the alignment film, the sealing material may be formed into a wavy shape rather than a straight shape. Further, if the sealing material is disconnected due to self-aggregation, the manufactured liquid crystal display panel may leak liquid crystal material outside the panel or air may be mixed inside the panel, which may cause display failure.
- the present invention has been made in view of such a point, and an object of the present invention is to form a sealing material having a predetermined shape at a predetermined position even if it overlaps the alignment film.
- the present invention is configured so that the mother substrates are brought into contact with each other on the outside of the frame-shaped first sealing material disposed so as to overlap the alignment film in order to enclose the liquid crystal layer.
- a second sealing material that is separated from the alignment film is disposed.
- a method of manufacturing a liquid crystal display panel according to the present invention includes a first substrate and a second substrate disposed to face each other, a liquid crystal layer provided between the first substrate and the second substrate, The alignment film provided on each surface of the first substrate and the second substrate on the liquid crystal layer side is bonded to the first substrate and the second substrate, and the first substrate and the second substrate are bonded together.
- a liquid crystal display panel comprising a sealing material for encapsulating a liquid crystal layer, wherein a display area for displaying an image is defined inside the sealing material, wherein the first mother substrate includes the first substrate.
- Steps and display for the first mother substrate on which the alignment film is formed A frame-shaped first sealing material that surrounds the region and extends along at least one side of the first sealing material so as to overlap the alignment film, and a second sealing material is disposed so as to be separated from the alignment film.
- the first sealing material and the second sealing material are bonded together, and the first sealing material and the second sealing material are bonded together so that the side edges of the first sealing material and the second sealing material are in contact with each other.
- the mother substrate and the second mother substrate are divided at the intermediate portion in the width direction of the integrated first seal material and second seal material to form the seal material, and the first substrate and the second substrate are separated from each other. With separation process to separate It is characterized in.
- the second sealing material is arranged so as to be separated from the alignment film with respect to the first mother substrate on which the alignment film is formed in the alignment film forming step. Since the material is arranged in a predetermined shape at a predetermined position on the first mother substrate, and the first sealing material is arranged so as to overlap the alignment film, the first sealing material is arranged on the alignment film of the first mother substrate. Although there is a possibility that the second sealing material is arranged in a predetermined shape at a predetermined position outside the first sealing material, there is a possibility that it is not arranged in a predetermined shape at a predetermined position.
- the outer side edge of the first sealing material is in a predetermined shape at a predetermined position. Placed) and blocked by contact with the side edge of the second sealant The Rukoto, excessive spreading of the first sealing member is suppressed. Therefore, since the first sealing material is arranged corresponding to the position and shape of the second sealing material, the first sealing material is arranged in a predetermined shape at a predetermined position on the alignment film. In the dividing step, the bonded first mother board and second mother board are divided at an intermediate portion in the width direction of the integrated first sealing material and second sealing material, so that the first sealing material is mainly used.
- a sealing material for encapsulating the liquid crystal layer constituted by the above is formed between the first substrate and the second substrate with a sufficient line width, and the extra sealing material mainly composed of the second sealing material is the first mother. It is removed together with the end materials of the substrate and the second mother substrate.
- the sealing material between the first substrate and the second substrate is mainly composed of the first sealing material (arranged in a predetermined shape at a predetermined position on the alignment film). Therefore, a sealing material having a predetermined shape is formed at a predetermined position even if it overlaps the alignment film.
- the first mother substrate may be provided with a plurality of the first substrates in a matrix
- the second mother substrate may be provided with a plurality of the second substrates in a matrix
- the first mother substrate is provided with a plurality of first substrates in a matrix
- the second mother substrate is provided with a plurality of second substrates in a matrix.
- a liquid crystal display panel is specifically manufactured by multi-chamfering.
- the second sealing material may be arranged so as to be shared between a pair of display areas adjacent to each other in the first mother substrate.
- the second sealant is disposed so as to be shared between a pair of display areas adjacent to each other, and thus is necessary for one manufacturing unit.
- the number of second sealing materials is reduced, the material cost of the sealing material is reduced, and when the sealing material is arranged using a dispenser, the time required for arranging the sealing material is shortened.
- the liquid crystal layer may be sealed inside the first sealing material.
- the ODF One Drop Fill
- vertical alignment films may be formed on the first mother substrate and the second mother substrate, respectively.
- the alignment films formed on the first mother substrate and the second mother substrate are vertical alignment films, and the first sealing material has a predetermined shape at a predetermined position on the alignment film of the first mother substrate. Therefore, the effect of the present invention is effectively exhibited.
- the first separation member which is separated from the alignment film so as to come into contact by bonding the mother substrates to the outside of the frame-shaped first sealing material disposed so as to overlap the alignment film in order to enclose the liquid crystal layer. Since two sealing materials are arranged, a sealing material having a predetermined shape can be formed at a predetermined position even if it overlaps the alignment film.
- FIG. 1 is a cross-sectional view of the liquid crystal display panel according to the first embodiment.
- FIG. 2 is a cross-sectional view illustrating a sealing material arranging step in the method of manufacturing the liquid crystal display panel according to the first embodiment.
- FIG. 3 is a plan view showing a bonding step in the method of manufacturing the liquid crystal display panel according to the first embodiment.
- FIG. 4 is a cross-sectional view showing a bonding process along the line IV-IV in FIG.
- FIG. 5 is a plan view illustrating a state of the sealing material of the liquid crystal display panel manufactured in the example and the comparative example according to the first embodiment.
- FIG. 6 is a cross-sectional view illustrating a sealing material arranging step in the method for manufacturing a liquid crystal display panel according to the second embodiment.
- FIG. 7 is a plan view showing a bonding step in the method of manufacturing the liquid crystal display panel according to the second embodiment.
- FIG. 8 is a cross-sectional view showing a bonding process along the line
- Embodiment 1 of the Invention 1 to 5 show Embodiment 1 of a method for manufacturing a liquid crystal display panel according to the present invention.
- FIG. 1 is a cross-sectional view of the liquid crystal display panel 50 of the present embodiment.
- the liquid crystal display panel 50 is provided between a TFT substrate (second substrate) and a CF substrate 30 (first substrate) provided to face each other, and between the TFT substrate 20 and the CF substrate 30.
- the liquid crystal layer 40, the vertical alignment films 31 and 32 provided on the respective surfaces of the TFT substrate 20 and the CF substrate 30 on the liquid crystal layer 40 side, and the TFT substrate 20 and the CF substrate 30 are bonded to each other, and the TFT substrate 20 and a sealing material 45 provided in a frame shape to enclose the liquid crystal layer 40 between the CF substrate 30 and the CF substrate 30.
- a rectangular display area D for displaying an image and a frame-shaped frame area F around the display area D are defined.
- the TFT substrate 20 includes a plurality of gate lines (not shown) provided on the insulating substrate 10 a so as to extend in parallel with each other in the display region D, and in a direction orthogonal to the gate lines.
- a plurality of source lines 11 provided so as to extend in parallel, and a plurality of TFTs (not shown) provided for each intersection of each gate line and each source line 11, that is, for each pixel which is the minimum unit of an image.
- an interlayer insulating film 12 provided so as to cover each TFT, and a plurality of pixel electrodes (not shown) provided in a matrix on the interlayer insulating film 12.
- the CF substrate 30 includes a black matrix 21 provided in a lattice shape on the insulating substrate 10b, and a red layer, a green layer, a blue layer, and the like provided between the lattices of the black matrix 21, respectively.
- a plurality of colored layers 22 and a common electrode (not shown) provided so as to cover the black matrix 21 and each colored layer 22 are provided.
- the liquid crystal layer 40 is made of a nematic liquid crystal material having electro-optical characteristics, and includes liquid crystal molecules having negative dielectric anisotropy ( ⁇ ⁇ 0).
- the vertical alignment films 31 and 32 are made of, for example, a polyimide resin having an alkyl group or a fluorine-containing group as a side chain.
- the liquid crystal display panel 50 configured as described above applies a predetermined voltage for each pixel to the liquid crystal layer 40 disposed between each pixel electrode on the TFT substrate 20 and the common electrode on the CF substrate 30, thereby providing the liquid crystal layer 40.
- the transmittance of the light transmitted through the panel is adjusted for each pixel, and an image is displayed.
- the liquid crystal display panel 50 when no voltage is applied to the liquid crystal layer 40, the liquid crystal molecules constituting the liquid crystal layer are aligned substantially perpendicular to the substrate surface, and the voltage is applied to the liquid crystal layer 40.
- the liquid crystal molecules are arranged so as to be aligned substantially parallel to the substrate surface, and are in a vertical alignment mode.
- FIG. 2 is a cross-sectional view showing a sealing material arranging step in the method of manufacturing the liquid crystal display panel 50.
- 3 is a plan view showing a bonding step in the method of manufacturing the liquid crystal display panel 50, and
- FIG. 4 is a cross-sectional view showing the bonding step along the line IV-IV in FIG.
- the manufacturing method of the present embodiment includes a mother substrate manufacturing process, an alignment film forming process, a sealing material arranging process, a bonding process, and a dividing process.
- a gate line, a source line 11, a TFT, an interlayer insulating film 12, a pixel electrode, and the like are formed for each cell unit on a mother glass substrate 110a having a thickness of about 0.7 mm by using a well-known method.
- a TFT mother substrate 120a (see FIG. 4) in which a plurality of TFT substrates 20 each having a display region D defined therein are provided in a matrix is manufactured.
- a CF mother substrate 130a (see FIGS. 2 and 4) in which a plurality of CF substrates 30 in which the display area D is defined is provided in a matrix is manufactured.
- ⁇ Alignment film formation process> After applying the above-described polyimide resin to each surface of the TFT mother substrate 120a and the CF mother substrate 130a produced in the mother substrate production process by a printing method, the coated film is baked to obtain the TFT mother substrate 120a and Vertical alignment films 31 and 32 (thickness of about 100 nm) are formed on the CF mother substrate 130a so as to cover each display region D.
- ⁇ Sealing material arrangement process> For example, by drawing an epoxy resin with a dispenser on the CF mother substrate 130a on which the vertical alignment film 32 is formed in the alignment film forming step, as shown in FIG. In the frame region F, the frame-shaped first sealing material 45a is linearly spaced from the vertical alignment film 32 so as to overlap the peripheral edge of the vertical alignment film 32, and extends along one side of the first sealing material 45a.
- the outer peripheral sealing material 45d (see FIG. 3) is disposed so as to surround the second sealing material 45b and the plurality of first sealing materials 45a and the second sealing material 45b.
- the CF mother substrate 130a onto which the liquid crystal material is dropped and the TFT mother substrate 120a on which the vertical alignment film 31 is formed in the alignment film forming step are pasted so that the display regions D overlap each other under reduced pressure.
- the outer surfaces of the TFT mother substrate 120a and the CF mother substrate 130a are pressurized to produce a bonded body 150a as shown in FIGS.
- the sealing material 45c sandwiched between the TFT mother substrate 120a and the CF mother substrate 130a constituting the bonded body 150a, and the first sealing material 45a and the second sealing material 45b are integrated for each cell unit, and the outer peripheral seal After curing 45d, the mother glass substrates 110a and 110b are thinned to about 0.05 mm to 0.3 mm, for example, by performing a chemical polishing process (chemical etching process).
- ⁇ Division process> First, on the outer surface of the TFT mother substrate 120a of the bonded body 150a thinned in the bonding step, along the periphery of each sealing material 45c, for example, while contacting the cutting edge of a disk-shaped cutting blade, By rolling the dividing blade, a linear crack is formed, and the crack is grown in the thickness direction, whereby the TFT mother substrate 120a is divided for each cell unit and separated into the TFT substrate 20.
- the sealing materials 45c at the side where the first sealing material 45a and the second sealing material 45b are integrated, as shown in FIG. 3, the cutting edge of the cutting blade is brought into contact with the intermediate portion in the width direction.
- the TFT mother substrate 120a is cut along the cutting line L on the sealing material 45c by rolling the cutting blade.
- the cutting edge of the cutting blade is made of, for example, cemented carbide such as tungsten carbide, sintered diamond, or the like.
- the “intermediate portion” in the width direction of the sealing material means an arbitrary position between both ends in the width direction of the sealing material, and is not limited to the middle position in the width direction of the sealing material.
- the outer surface of the CF mother substrate 130a is similar to the TFT mother substrate 120a side along the periphery of each sealing material 45c.
- a linear crack is formed and the crack is grown in the thickness direction.
- the bonding material 150a is divided for each cell unit by forming the sealing material 45 from which the sealing material 45c is divided simultaneously with the division of the CF mother substrate 130a.
- the liquid crystal display panel 50 of the present embodiment can be manufactured.
- FIG. 5A is a plan view showing a state of the sealing material of the liquid crystal display panel manufactured in the example of the present embodiment
- FIG. 5B is a liquid crystal manufactured in the comparative example. It is a top view which shows the state of the sealing material of a display panel.
- a liquid crystal display panel was manufactured by the same method as that described above. Further, as a comparative example of the present embodiment, a liquid crystal display panel was manufactured by a method in which the second sealing material was not arranged in the sealing material arranging step of the manufacturing method described above.
- the side edges of the sealing material S are substantially linear.
- the side edges of the sealing material S meander in the region where the sealing material S and the alignment film Pi overlap. It was done.
- the first sealing material and the second sealing material A liquid crystal display panel was manufactured by the same method as the above-described manufacturing method while changing the gap (0.65 mm to 0.85 mm), and the seal bonding property and cell gap of each manufactured liquid crystal display panel were evaluated.
- the first sealing material and the second sealing material an acrylic / epoxy UV curing / thermosetting combined sealing material including a spacer having a particle diameter of about 3.7 ⁇ m is used, and the drawn first sealing material and The finished width of the second sealing material is about 0.2 mm, and the finished height is about 0.03 mm.
- the sealing material interval is a distance between the center position of the first sealing material and the center position of the second sealing material.
- the first sealing material and the second sealing material spread to a line width of about 0.8 mm after passing through the bonding process.
- the vertical alignment film is formed with respect to the CF mother substrate 130a on which the vertical alignment film 32 is formed in the alignment film forming step in the sealing material arranging step. Since the second sealing material 45b is disposed so as to be separated from the second sealing material 32, the second sealing material 45b is disposed in a predetermined shape at a predetermined position on the CF mother substrate 130a, and the first sealing material 45a is disposed on the vertical alignment film. Since the first sealing material 45a may not be arranged in a predetermined shape at a predetermined position on the vertical alignment film 32 of the CF mother substrate 130a, the first sealing material 45a is arranged outside the first sealing material 45a.
- the second sealing material 45b is arranged in a predetermined shape at the position of the first sealing material, the first sealing material sandwiched between the TFT mother substrate 120a and the CF mother substrate 130a in the bonding step. Even if the sealing material 45a spreads so as to escape to the outside by being repelled by the vertical alignment films 31 and 32, the outer side edge of the first sealing material 45a is arranged in a predetermined shape at a predetermined position. By being in contact with the side end of the sealing material 45b and being blocked, excessive spreading of the first sealing material 45a can be suppressed.
- the first sealing material 45a is arranged corresponding to the position and shape of the second sealing material 45b, the first sealing material 45a can be arranged at a predetermined position on the vertical alignment film 32 in a predetermined shape. it can.
- the bonded TFT mother substrate 120a and CF mother substrate 130a are divided at the first sealing material 45a and the second sealing material 45b that are integrated, that is, at an intermediate portion in the width direction of the sealing material 45c. Therefore, the sealing material 45 for encapsulating the liquid crystal layer 40 mainly composed of the first sealing material 45a is formed between the TFT substrate 20 and the CF substrate 30 with a sufficient line width, and mainly the second sealing material 45b.
- the excess sealing material constituted by the above is removed together with the end materials of the TFT mother substrate 120a and the CF mother substrate 130a.
- the sealing material 45 between the TFT substrate 20 and the CF substrate 30 is mainly (first sealing material 45a arranged in a predetermined shape at a predetermined position on the alignment film). Therefore, even if it overlaps with the vertical alignment films 31 and 32, the seal material 45 having a predetermined shape can be formed at a predetermined position.
- the vertical alignment films 31 and 32 and the seal material 45 can be satisfactorily overlapped with each other, the frame of the liquid crystal display panel 50 can be reduced.
- terminals of display wiring such as gate lines and source lines 11 are formed in the terminal region of the TFT substrate 20 protruding from the CF substrate 30 outside the sealing material 45c.
- each terminal may be corroded during the chemical polishing process.
- the outer peripheral seal 45d provided so as to surround the plurality of sealing materials 45c causes the terminal region to be exposed to the outside during the chemical polishing process. Since it is not exposed, corrosion of the terminal during the chemical polishing process can be suppressed.
- FIG. 6 is a cross-sectional view showing a sealing material arranging step in the method of manufacturing the liquid crystal display panel of the present embodiment.
- FIG. 7 is a plan view showing a bonding step in the manufacturing method of the liquid crystal display panel of the present embodiment
- FIG. 8 is a cross-sectional view showing the bonding step along the line VIII-VIII in FIG. is there.
- the same parts as those in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted.
- each end face of the TFT substrate 20 and the CF substrate 30 and the end face of the sealing material 45 coincide with each other, but in the liquid crystal display panel of the present embodiment, In a pair of sides facing each other, the end surfaces of the TFT substrate (20) and the CF substrate (30) coincide with the end surface of the sealing material (45).
- the configuration of the liquid crystal display panel according to the present embodiment is substantially the same as that of the liquid crystal display panel 50 according to the first embodiment, except that the positions and the number of sides on which the end faces coincide are different.
- the liquid crystal display panel of the present embodiment is obtained by arranging the TFT substrates 20 adjacent to each other along the row direction or the column direction in the mother substrate manufacturing process in the manufacturing method described in the first embodiment, so that the TFT A mother substrate 120b (see FIG. 8) is produced, and similarly, CF substrates 30b (see FIG. 8) are produced by arranging adjacent CF substrates 30 adjacent to each other along the row direction or the column direction.
- the sealing material arranging step as shown in FIG. 6, the peripheral edge portion of the vertical alignment film 32 in the frame region F around each display region D with respect to the CF mother substrate 130b on which the vertical alignment film 32 is formed.
- a linear second sheet so as to extend along one side between a pair of adjacent first seal members 45a, spaced apart from the frame-shaped first seal member 45a and the vertical alignment film 32 so as to overlap with each other.
- FIG. 8 As shown in FIG. 8, along the two cutting lines L on the sealing material 45 c, the cutting blade is rolled while the cutting edge of the cutting blade is brought into contact with two points of the intermediate portion in the width direction. Then, the TFT mother substrate 120b and the CF mother substrate 130b are divided, and the bonded body 150b is divided for each cell unit.
- the manufacturing method of the liquid crystal display panel of the present embodiment outside the frame-shaped first sealing material 45a arranged so as to overlap the alignment films 31 and 32 in order to enclose the liquid crystal layer 40.
- the second sealing material 45b that is separated from the alignment films 31 and 32 is disposed so as to come into contact with each other by bonding the TFT mother substrate 120b and the CF mother substrate 130b.
- the sealing material 45 having a predetermined shape can be formed at the position of the second sealing material 45 and the second sealing material 45b is arranged so as to be shared between a pair of display areas D adjacent to each other.
- the number of second sealing materials 45b can be reduced, so that the material cost of the sealing material (45) can be reduced and the time required for disposing the sealing material (45) can be reduced.
- the liquid crystal display panel manufacturing method in which the sealing material is arranged on the CF mother substrate is exemplified, but the present invention is also applied to the liquid crystal display panel manufacturing method in which the sealing material is arranged on the TFT mother substrate. can do.
- the method of manufacturing a liquid crystal display panel by multi-chamfering is exemplified, but the present invention can also be applied to a method of manufacturing a liquid crystal display panel by single-chamfering.
- a method for manufacturing a liquid crystal display panel in a vertical alignment mode has been exemplified.
- the present invention can also be applied to a method for manufacturing a liquid crystal display panel in a horizontal alignment mode.
- a method for manufacturing a liquid crystal display panel using the ODF (One Drop Drop Fill) method has been exemplified.
- the present invention provides a blank cell substrate by vacuum injection after forming a blank cell under normal pressure.
- the present invention can also be applied to a method for manufacturing a liquid crystal display panel in which a liquid crystal material is injected between them.
- an active matrix drive type liquid crystal display panel is illustrated, but the present invention can also be applied to a passive matrix drive type liquid crystal display panel.
- the present invention can form a sealing material having a predetermined shape at a predetermined position even when it overlaps with an alignment film, so that it is useful for a liquid crystal display panel for mobile use that requires a narrow frame. It is.
- TFT substrate (second substrate) 30 CF substrate (first substrate) 31 Vertical alignment film 32 Vertical alignment film 40 Liquid crystal layer 45 Sealing material 45a First sealing material 45b Second sealing material 50 Liquid crystal display panels 120a, 120b TFT mother substrate (second mother substrate) 130a, 130b CF mother board (first mother board)
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Abstract
Description
図1~図5は、本発明に係る液晶表示パネルの製造方法の実施形態1を示している。具体的に、図1は、本実施形態の液晶表示パネル50の断面図である。
例えば、厚さ0.7mm程度のマザーガラス基板110a上に、周知の方法を用いて、各セル単位毎に、ゲート線、ソース線11、TFT、層間絶縁膜12及び画素電極などを形成することにより、各々、表示領域Dが規定された複数のTFT基板20がマトリクス状に設けられたTFT母基板120a(図4参照)を作製する。
上記母基板作製工程で作製されたTFT母基板120a及びCF母基板130aの各表面に、印刷法により、上述したポリイミド樹脂を塗布した後に、その塗布膜を焼成することにより、TFT母基板120a及びCF母基板130aに、各表示領域Dを覆うように、垂直配向膜31及び32(厚さ100nm程度)をそれぞれ形成する。
例えば、上記配向膜形成工程で垂直配向膜32が形成されたCF母基板130aに対して、ディスペンサを用いてエポキシ樹脂を描画することにより、図2に示すように、各表示領域Dの周囲の額縁領域Fにおいて垂直配向膜32の周端部に重なるように枠状の第1シール材45a、垂直配向膜32から離間して、第1シール材45aの1辺に沿って延びるように線状の第2シール材45b、並びに複数の第1シール材45a及び第2シール材45bを包囲するように、外周シール材45d(図3参照)を配置する。
まず、例えば、上記シール材配置工程で第1シール材45a、第2シール材45b及び外周シール材45dが配置されたCF母基板130aに対して、各第1シール材45aに囲まれた領域(表示領域D)に液晶材料を滴下する。
まず、上記貼り合わせ工程で薄板化された貼合体150aのTFT母基板120aの外表面において、各シール材45cの周囲に沿って、例えば、円盤状の分断刃の刃先を当接させながら、その分断刃を転動させることにより、線状のクラックを形成すると共に、そのクラックを厚さ方向に成長させることにより、TFT母基板120aを各セル単位毎に分断して、TFT基板20に分離する。ここで、各シール材45cのうち、第1シール材45a及び第2シール材45bが一体化した辺では、図3に示すように、その幅方向の中間部分に分断刃の刃先を当接させながら、その分断刃を転動させることにより、シール材45c上の分断ラインLに沿ってTFT母基板120aを分断する。なお、上記分断刃は、その刃先が、例えば、タングステンカーバイドなどの超硬合金や焼結ダイヤモンドなどにより構成されている。ここで、上記シール材の幅方向の「中間部分」とは、シール材の幅方向における両端間の任意な位置を意味し、シール材の幅方向における真ん中の位置に限定されるものではない。
図6~図8は、本発明に係る液晶表示パネルの製造方法の実施形態2を示している。具体的に、図6は、本実施形態の液晶表示パネルの製造方法におけるシール材配置工程を示す断面図である。また、図7は、本実施形態の液晶表示パネルの製造方法における貼り合わせ工程を示す平面図であり、図8は、図7中のVIII-VIII線に沿った貼り合わせ工程を示す断面図である。なお、以下の実施形態において、図1~図5と同じ部分については同じ符号を付して、その詳細な説明を省略する。
20 TFT基板(第2基板)
30 CF基板(第1基板)
31 垂直配向膜
32 垂直配向膜
40 液晶層
45 シール材
45a 第1シール材
45b 第2シール材
50 液晶表示パネル
120a,120b TFT母基板(第2母基板)
130a,130b CF母基板(第1母基板)
Claims (5)
- 互いに対向して配置された第1基板及び第2基板と、
上記第1基板及び第2基板の間に設けられた液晶層と、
上記第1基板及び第2基板の上記液晶層側の各表面にそれぞれ設けられた配向膜と、
上記第1基板及び第2基板を互いに接着すると共に、該第1基板及び第2基板の間に上記液晶層を封入するためのシール材とを備え、
上記シール材の内側に画像表示を行う表示領域が規定された液晶表示パネルを製造する方法であって、
上記第1基板を含む第1母基板に該第1基板の表示領域を覆うように上記配向膜を形成し、上記第2基板を含む第2母基板に該第2基板の表示領域を覆うように上記配向膜を形成する配向膜形成工程と、
上記配向膜が形成された第1母基板に対し、上記表示領域を囲むと共に、該配向膜に重なるように枠状の第1シール材、及び該第1シール材の少なくとも1辺に沿って延びると共に、該配向膜から離間するように第2シール材を配置するシール材配置工程と、
上記第1シール材及び第2シール材が配置された第1母基板、並びに上記配向膜が形成された第2母基板を、互いの上記表示領域が重なり合うように該第1シール材及び第2シール材を介して貼り合わせると共に、該第1シール材及び第2シール材を互いの側端が接触するように一体化させる貼り合わせ工程と、
上記貼り合わせた第1母基板及び第2母基板を上記一体化させた第1シール材及び第2シール材の幅方向における中間部分で分断して、上記シール材を形成すると共に、上記第1基板及び第2基板に分離する分断工程とを備えることを特徴とする液晶表示パネルの製造方法。 - 請求項1に記載された液晶表示パネルの製造方法において、
上記第1母基板には、上記第1基板がマトリクス状に複数設けられ、第2母基板には、上記第2基板がマトリクス状に複数設けられていることを特徴とする液晶表示パネルの製造方法。 - 請求項2に記載された液晶表示パネルの製造方法において、
上記シール材配置工程では、上記第1母基板において互いに隣り合う一対の上記表示領域の間で共用するように上記第2シール材を配置することを特徴とする液晶表示パネルの製造方法。 - 請求項1乃至3の何れか1つに記載された液晶表示パネルの製造方法において、
上記貼り合わせ工程では、上記第1シール材の内側に上記液晶層を封入することを特徴とする液晶表示パネルの製造方法。 - 請求項1乃至4の何れか1つに記載された液晶表示パネルの製造方法において、
上記配向膜形成工程では、上記第1母基板及び第2母基板に垂直配向膜をそれぞれ形成することを特徴とする液晶表示パネルの製造方法。
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| US13/582,811 US8715433B2 (en) | 2010-04-06 | 2011-03-03 | Method for fabricating liquid crystal display panel |
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| JP2017521721A (ja) * | 2014-07-29 | 2017-08-03 | 深▲せん▼市華星光電技術有限公司Shenzhen China Star Optoelectronics Technology Co., Ltd. | アレイ基板及び液晶表示パネル |
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| CN103311183B (zh) * | 2013-06-05 | 2015-08-19 | 上海和辉光电有限公司 | 平板显示器的面板及其切割方法 |
| KR20160011298A (ko) * | 2014-07-21 | 2016-02-01 | 삼성디스플레이 주식회사 | 액정 표시 패널의 절단 방법 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1164862A (ja) * | 1997-08-19 | 1999-03-05 | Toshiba Corp | 液晶表示素子 |
| JP2002365648A (ja) * | 2001-06-06 | 2002-12-18 | Seiko Epson Corp | 液晶装置及びその製造方法 |
| JP2003520995A (ja) * | 2000-01-21 | 2003-07-08 | レインボー ディスプレイズ,インコーポレイティド | Amlcdタイルにおけるシール付近のピクセル汚染を抑制するための構造および方法 |
| JP2007025516A (ja) * | 2005-07-21 | 2007-02-01 | Sanyo Epson Imaging Devices Corp | 電気光学装置の製造方法、電気光学装置、シールマスク及びシール材印刷装置 |
| JP2007121691A (ja) * | 2005-10-28 | 2007-05-17 | Epson Imaging Devices Corp | 液晶パネルの製造方法 |
| JP2007233289A (ja) * | 2006-03-03 | 2007-09-13 | Hitachi Displays Ltd | 液晶表示装置及びその製造方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7898632B2 (en) * | 2005-12-28 | 2011-03-01 | Seiko Epson Corporation | Electro-optical device, manufacturing method thereof, and electronic apparatus |
| JP2008096836A (ja) | 2006-10-13 | 2008-04-24 | Sharp Corp | 液晶表示パネルの製造方法、および液晶表示パネル |
| JP2009075503A (ja) * | 2007-09-25 | 2009-04-09 | Seiko Epson Corp | 電気光学装置、及びこれを備えた電子機器 |
| US20120044445A1 (en) * | 2010-08-17 | 2012-02-23 | Semiconductor Energy Laboratory Co., Ltd. | Liquid Crystal Device and Manufacturing Method Thereof |
-
2011
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1164862A (ja) * | 1997-08-19 | 1999-03-05 | Toshiba Corp | 液晶表示素子 |
| JP2003520995A (ja) * | 2000-01-21 | 2003-07-08 | レインボー ディスプレイズ,インコーポレイティド | Amlcdタイルにおけるシール付近のピクセル汚染を抑制するための構造および方法 |
| JP2002365648A (ja) * | 2001-06-06 | 2002-12-18 | Seiko Epson Corp | 液晶装置及びその製造方法 |
| JP2007025516A (ja) * | 2005-07-21 | 2007-02-01 | Sanyo Epson Imaging Devices Corp | 電気光学装置の製造方法、電気光学装置、シールマスク及びシール材印刷装置 |
| JP2007121691A (ja) * | 2005-10-28 | 2007-05-17 | Epson Imaging Devices Corp | 液晶パネルの製造方法 |
| JP2007233289A (ja) * | 2006-03-03 | 2007-09-13 | Hitachi Displays Ltd | 液晶表示装置及びその製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017521721A (ja) * | 2014-07-29 | 2017-08-03 | 深▲せん▼市華星光電技術有限公司Shenzhen China Star Optoelectronics Technology Co., Ltd. | アレイ基板及び液晶表示パネル |
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| US20120325392A1 (en) | 2012-12-27 |
| US8715433B2 (en) | 2014-05-06 |
| JP5285808B2 (ja) | 2013-09-11 |
| JPWO2011125284A1 (ja) | 2013-07-08 |
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