TW201033687A - Method of manufacturing liquid crystal display device, and apparatus for manufacturing liquid crystal display device - Google Patents

Abstract

In a case where polarizing plates are attached to both the front and back sides of a liquid crystal cell to prepare a liquid crystal display panel, and then the liquid crystal display panel is optically inspected, an object is to provide a method for manufacturing a liquid crystal display device and an apparatus for manufacturing a liquid crystal display device that are capable of suppressing change in orientation state of liquid crystal when in the attachment of the polarizing plates, so that a subsequent inspection step can be carried out without the possibility of causing adverse influences due to the change in orientation state of liquid crystal, and thus the tact time can be shortened without inviting erroneous inspection in the panel inspection. A method for manufacturing a liquid crystal device, which includes a lamination step of laminating polarizing plates having an identical structure or having different structures onto both the front and back sides of a liquid crystal cell that has a liquid crystal layer between a first substrate and a second substrate, thereby preparing a liquid crystal display panel; and an inspection step of optically inspecting the liquid crystal display panel, the method being characterized by that the lamination step includes a first polarizing plate attaching step of attaching a first polarizing plate to the first substrate that is not easier to cause potential decay after charging than the second substrate, and a second polarizing plate attaching step of attaching a second polarizing plate to the second substrate that is easier to cause potential decay after charging than the first substrate.

Description

[Technical Field] The present invention relates to a method of manufacturing a liquid crystal display device and a device for manufacturing a liquid crystal display device, and more particularly to a method for attaching liquid crystal cells. A method of manufacturing a liquid crystal display device for manufacturing a liquid crystal display device with an optical film, and a device for manufacturing a liquid crystal display device. BACKGROUND OF THE INVENTION A liquid crystal display device is a liquid crystal display panel (liquid crystal display unit) which is attached to a front surface of a liquid crystal cell formed by holding a liquid crystal layer on a pair of glass substrates, and is attached with a polarizing plate (polarizing member). Composition. In the related art, a method of attaching a polarizing plate to a liquid crystal cell is known as follows: [Patent Document 1 to Patent Document 3] The liquid crystal cell and the polarizing plate are fed between a pair of attaching rollers, and the polarizing plate is attached. The method of liquid crystal cells. However, as described above, after the polarizing plate is bonded to both surfaces of the liquid crystal cell and the liquid crystal display panel is formed, an inspection step for checking whether the bonding state is defective or whether there is a defect due to adhesion of dust or the like is performed (panel inspection step). . The inspection is performed by, for example, reflecting light when the light is irradiated on the surface of the liquid crystal display panel or transmitted light when the inside of the liquid crystal display panel is irradiated with light, and imaging the image data by a CCD camera or the like, and performing image analysis or the like. Patent Document 1: JP-A-2005-37416, JP-A-201033687, JP-A-2005-37418, JP-A-2005-37418, JP-A-2006-39238, However, in the liquid crystal display panel produced by the conventional attaching step, when the panel inspection step is performed, the alignment state of the liquid crystal changes for some reason, and the reflected light or transmitted light is affected by the influence. The adverse effects are caused, and the defects or shortcomings as described above do not actually exist, which may result in a so-called erroneous detection that is determined to be defective or defective, and the panel inspection step cannot be performed correctly. In particular, as disclosed in Patent Document 1 or Patent Document 2, such a problem is more apparent when the polarizing plate is continuously and automatically attached to the liquid B element to manufacture the liquid crystal display panel at a south speed. When the erroneous detection occurs in the panel inspection step, it is necessary to re-inspect or re-process the liquid crystal display panel (after peeling off the polarizing plate, attaching φ with other polarizing plates), which becomes the cause of the decrease in the yield ratio or the decrease in productivity. . As described later, the inventors have found that if the interval (pitch) between the step of attaching the polarizing plate and the step of inspecting the panel is increased, the above-mentioned problem of erroneous detection can be solved, but the time required is prolonged, and as in the patent document 丨In the automatic attaching method of the polarizing plate, it is detrimental to the high-speed continuous manufacturability. Further, as described later, the inventors have also found that the above-mentioned problem of erroneous detection can be solved by weakening the pressing force of the attaching roller attached to the polarizing plate, but it is caused by weakening the attaching roller. Adding pressure and mixing the bubbles into the liquid 5 201033687 Other problems between the unit cell and the polarizing plate. The present invention has been made in view of the above problems, and an object of the invention is to provide a method for manufacturing a liquid crystal display device and a device for manufacturing a liquid crystal display device, which are obtained by attaching a polarizing plate to both sides of a liquid crystal cell to produce a liquid crystal. When the optical inspection of the liquid crystal display panel is performed after the display panel is performed, the change of the alignment state of the liquid crystal during the attachment of the polarizing plate is suppressed, and there is no adverse effect due to the change of the alignment state of the liquid crystal, and the inspection of the subsequent stage can be performed. By step, the erroneous detection in the panel inspection will not be incurred, and the time required can be shortened. MEANS FOR SOLVING THE PROBLEMS When the present inventors made a research effort, it was judged that the alignment state of the liquid crystal during the inspection was not uniform because of the charging of the liquid crystal cells in the attaching step (layering step) of the polarizing plate. Further, in further research, it was found that the order of bonding of the polarizing plate to the substrate can be suppressed to a specific order, and the charging of the liquid crystal cells can be suppressed. Therefore, even if the time interval (pitch) between the lamination step and the inspection step is shortened, There is no adverse effect caused by the change of the alignment state of the liquid crystal, and the inspection step of the latter stage can be carried out. As a result, the erroneous detection of the panel inspection is not caused, and the required time can be shortened, so that the present invention can be completed. That is, the present invention is a method of manufacturing a liquid crystal display device, comprising: a laminating step of a polarizing plate having the same or different layers of liquid crystal cells having a liquid crystal layer between a first substrate and a second substrate; And a step of inspecting the liquid crystal display panel by optical inspection, and the method of manufacturing the liquid crystal display device is characterized in that the step of laminating has the following steps: a first polarizing plate attaching step, 201033687 The first-polarizer is attached to the first substrate which is difficult to be electrically attenuated after being charged with the second substrate; and the second polarizing plate attaching step is performed after the Xiao-polarizer attaching step The polarizing plate is attached to the second substrate which is easily attenuated by potential after charging the first substrate. Preferably, in the method of manufacturing a liquid crystal display device of the present invention, the first polarizing plate attaching step is: supplying a plurality of first-polarizing plates cut at predetermined intervals in a peelable state and continuously forming along the long direction. a first strip on the first dove-shaped carrier film, and the first strip-shaped carrier film is folded back using a blade, and the first polarizing plate is sequentially peeled off from the first-belt-shaped carrier film, and the first stripped sheet is peeled off - a step of attaching the polarizing plate to the first substrate of the liquid crystal cell sequentially supplied, or supplying the elongated first polarizing plate longer than the liquid crystal cell in a peelable state on the first carrier film a first strip-shaped body, and the first strip-shaped carrier film is folded back by using a knife to partially peel off the long first polarizing plate from the first strip-shaped carrier film, and the part of the elongated polarizing plate is peeled off Attached to the first substrate of the liquid crystal cell sequentially supplied, and then, the portion of the long-shaped polarizing plate which has been attached to the length corresponding to the liquid crystal cell is cut off. Polarizing plate attachment step: Supply is cut at predetermined intervals Breaking the plurality of second polarizing plates in a peelable state along the long direction continuously formed on the second strip-shaped carrier film, and using the knife to fold back the second strip-shaped carrier film The strip-shaped carrier film sequentially peels off the second polarizing plate, and attaches the peeled second polarizing plate to the first substrate of the liquid crystal cell to which the first polarizing plate is attached; The elongated second polarizing plate which is longer than the liquid crystal cell is peelable. The second strip is formed on the second strip-shaped carrier film, and the second strip-shaped carrier film is folded back using the 201033687 blade. And partially peeling off the long second polarizing plate from the second strip-shaped carrier film, and attaching the portion of the stripped long second polarizing plate to the sequentially supplied liquid crystal cell to which the first polarizing plate is attached a second substrate, and then cutting the portion of the elongated second polarizing plate that has been attached in a step corresponding to the length of the liquid crystal cell, the checking step being performed after the second polarizing plate attaching step Optically check the steps of the liquid crystal display panel . In a preferred embodiment of the present invention, in the method of manufacturing a liquid crystal display device, the first polarizing plate attaching step is performed by overlapping at least one of the first polarizing plate and the liquid crystal cell. a state between the first pressing member pressed by the first polarizing plate side and the second pressing member pressed by the liquid crystal cell side, and the first polarizing plate and the liquid crystal cell are first added The pressing member and the second pressing member are relatively moved to perform. Further, in the method of manufacturing a liquid crystal display device of the present invention, the second polarizing plate attaching step is performed by the liquid crystal cell to which the first polarizing plate is attached and the second polarizing plate At least one of the portions is overlapped with each other, and is held by the third pressing member pressed by the second polarizing plate side and the fourth pressing member pressed by the side of the first polarizing plate attached to the liquid crystal cell. In the meantime, the liquid crystal cell in which the first polarizing plate is laminated and the second polarizing plate are relatively moved to the third pressing member and the fourth pressing member. Further, in the method of manufacturing a liquid crystal display device, the first substrate includes a circuit portion including a plurality of gate wirings and a plurality of gate wirings disposed perpendicularly to the plurality of gate wirings via an insulating film a source wiring device; a plurality of switching elements are disposed at an intersection of the plurality of gate wirings and a source wiring of a plurality of the previous 201033687; and a plurality of pixel electrodes connected to the plurality of switches 7L, the foregoing The second substrate has a common electrode disposed opposite to the plurality of pixel electrodes, and the liquid crystal layer is stored between the pixel electrode and the common electrode to apply an electric field in a direction substantially perpendicular to a substrate surface of the first substrate and the second substrate Take the driver.

Moreover, the present invention is preferably a method of manufacturing a liquid crystal display device, wherein the first substrate* has a conductive member (preferably, a conductive member having a surface resistance of 1.0 Χ 1012 Ω/□ or less), and The second substrate has a pixel electrode and a common electrode that are driven by applying an electric field in a direction substantially parallel to the surface of the substrate to drive the liquid crystal layer. Further, the present invention is preferably a method of manufacturing a liquid crystal display device, wherein the first-polarizing plate has a conductive layer having a surface resistance value of ι 2 Ω / □ or less. Further, the present invention provides a manufacturing apparatus for a liquid crystal display device comprising: a layering mechanism 剌 a surface of two sides of a liquid crystal cell having a liquid crystal layer between a first substrate and a second substrate, and polarized light having the same or different layers The board 'made liquid crystal display surface pole · & ~ ★ field test, and inspection mechanism, optical inspection of the liquid crystal display panel, B, A a back to the pole and the liquid crystal display device manufacturing device "layering mechanism The first polarizing plate attaching mechanism is characterized in that the first polarizing plate is attached to the first substrate which is difficult to be electrically attenuated after being charged with the second substrate; and the second polarizing plate attaching mechanism The second polarizing plate is disposed in the subsequent stage of the first polarizing plate _ mechanism for mixing the second polarizing plate with the second substrate which is easily attenuated after being charged by the first substrate. In the manufacturing apparatus of the liquid crystal display device of the present invention, the first polarizing plate attaching mechanism preferably has a blade which is folded back by a strip-shaped strip-shaped carrier. The first carrier film is sequentially peeled off from the first polarizing plate, and the plurality of first polarizing plates cut at predetermined intervals are formed in a peelable state and continuously formed on the first carrier film along the long direction. And the attaching mechanism, which is to attach the first polarized plate to the first substrate of the liquid crystal cell supplied sequentially; or the first strip carrier having the lower blade from the first strip After the film is folded back, "the π-shaped gamma is partially secret-like-polarized plate and the above-mentioned system is longer than the liquid crystal cell. The first polarizing plate is in a peelable read state. The paste structure is the first substrate of the liquid crystal cell to which the long-shaped polarizing plate of the illusion is attached, and the cutting mechanism is the long-shaped __ polarizing plate. The portion is corresponding to the length of the liquid crystal cell (10), and the third polarizing plate attaching mechanism is The utility model has the following steps: the second strip-shaped carrier film is folded back by the strip body, and the second strip-shaped clock lion is the third polarizing plate, and the strip shape is pre-m_breaking plural second polarized light The plate is in a peelable state and is formed continuously on the second strip-shaped carrier film; and the attaching mechanism attaches the second polarizing plate of the industry to the sequential supply with the first-bias And the second substrate of the liquid cell of the plate; or the blade having the second strip carrier film folded back by the first strip, and the second strip carrier _, p The second polarizing plate is peeled off and the second strip-shaped system is longer than the liquid crystal cell, and the second polarizing plate is formed in a peelable state on the second strip-shaped carrier; the attaching mechanism is peeled off a portion of the long second polarizing plate 201033687 is attached to the second substrate of the liquid crystal cell to which the first polarizing plate is attached; and the cutting mechanism is a portion of the long second polarizing plate The cutting mechanism is attached to the second polarizing plate attaching mechanism after being cut according to the length of the liquid crystal cell Further, in the manufacturing apparatus of the liquid crystal display device of the present invention, the first polarizing plate attaching mechanism has the first polarizing plate. a first pressing member on the first polarizing plate side and a second pressing member on the liquid crystal cell side held in a state in which at least one of the liquid crystal cells overlaps with each other, and the first polarizing plate and the first polarizing plate are configured The liquid crystal cell relatively moves the first pressing member and the second pressing member to attach the first polarizing plate to the first substrate. Further, in the manufacturing apparatus of the liquid crystal display device, the aforementioned The second polarizing plate attaching mechanism has a third polarizing plate side that is held in a state in which at least one of the liquid crystal cells to which the first polarizing plate is attached and the second polarizing plate overlap each other a pressing member and a fourth pressing member attached to the first polarizing plate side of the liquid crystal cell, and configured to laminate the liquid crystal cell having the first polarizing plate and the second polarizing plate to the third pressing member and four The pressing member is relatively moved to attach the second polarizing plate to the second substrate. According to the method and apparatus for manufacturing a liquid crystal display device of the present invention, when a polarizing plate is attached to both surfaces of a liquid crystal cell to form a liquid crystal display panel, the step of attaching the polarizing plate (layering step) is suppressed. The liquid crystal cell 201033687 is charged, so even if the time interval (pitch) between the lamination step and the inspection step is shortened, there is no adverse effect caused by the charging of the liquid crystal cell, and the inspection step of the latter stage can be implemented, and the result is that it will not be incurred. The erroneous detection in the panel inspection step can greatly shorten the time required to manufacture the liquid crystal display device. In particular, the manner in which the polarizing plate is continuously and automatically attached to the liquid crystal cell can exhibit a remarkable excellent effect for maintaining the high-speed continuous manufacturability of the liquid crystal display panel. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional schematic view of a liquid crystal display panel manufactured in the first embodiment. Fig. 2 is a flow chart showing an embodiment of a method of manufacturing a liquid crystal display device of the first embodiment. Fig. 3 is a schematic block diagram showing a manufacturing apparatus of a liquid crystal display device of the first embodiment. Fig. 4 is a schematic enlarged view showing the first polarizing plate original plate preparing step S1 and the second cutting step S5 in the third drawing. Fig. 5 is a schematic enlarged view showing the second polarizing plate original plate preparing step S4 and the second cutting step S5 in the third drawing. Fig. 6 is an enlarged view showing the inspection step S7 in the aforementioned third drawing. Fig. 7 is a cross-sectional schematic view showing the configuration of a film having a first polarizing plate between the first polarizing plate original plate preparing step S1 and the first polarizing plate attaching step S3a. Fig. 8 is a cross-sectional view showing the configuration of the film having the first polarizing plate between the second polarizing plate original plate preparing step S 4 and the second polarizing plate attaching step S3b. Fig. 9 is a cross-sectional schematic view showing a liquid crystal display panel manufactured in the second embodiment. Fig. 10 is a graph showing the results of measuring the easiness of charging of a CF substrate and a TFT substrate.

C. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. (Embodiment 1) Fig. 1 is a cross-sectional schematic view of a liquid crystal display panel y which is continuously manufactured at a high speed in the embodiment 1. As shown in Fig. 1, the liquid crystal display panel γ of the present embodiment includes: a liquid crystal cell 4 in which a liquid crystal layer 43 located at the center is held by a pair of substrates 41 and 42; and a layer of the liquid crystal cell 4 is laminated. a first polarizing plate 10 on a substrate 42 side; and a second polarizing plate 20 laminated on the second substrate 42 side of the liquid crystal cell 4. The liquid crystal cell 4 in this embodiment is a vertical alignment type (hereinafter referred to as "VA method"). The back surface side of the liquid crystal cell 4, that is, the substrate 41 disposed on the backlight side (hereinafter referred to as the back side substrate) is provided on a transparent substrate 411 such as glass or plastic, and has a plurality of gate wirings and is interposed therebetween. a line portion of a plurality of source lines in which a plurality of gate lines and an insulating film are disposed orthogonally; a thin film transistor (TFT) 412 provided as a complex switching element at an intersection of the plurality of gate lines and the plurality of source lines; An interlayer insulating film 413 on the switching element (thin film transistor) is disposed on the interlayer insulating film 413 and is connected to each of the plurality of switching elements 201033687 by a connection hole formed in the interlayer insulating film 413. (Metal Mm; and the alignment 瞑415 on the 剌 electrode (pixel electrode) 414. The thin film transistor 412 has a gate electrode; a semiconductor layer opposite to the gate electrode via a gate insulating film; Individually connected to the source electrode and the electrodeless electrode of the semiconductor layer, the gate wiring is connected to the gate electrode, the source wiring is connected to the source (four) pole, and the pixel electrode 414 is connected to the slot electrode. The gate wiring and the gate electrode are The source wiring, the source electrode, and the drain electrode are formed by using a sputtering method such as a metal film such as titanium, chromium, or a metal film, or an alloy film thereof, or a product of the above (4). The semiconductor layer is formed by forming a semiconductor material such as amorphous germanium or polycrystalline germanium by a plasma CVD (Chemical Vapor Deposition) method or the like by photolithography. A method of patterning or the like is formed by a method, etc. The pixel electrode 414 is formed by forming a transparent conductive material such as indium oxide (IT〇), lead indium oxide, tin oxide, or lead oxide by sputtering or the like, and then using light. A method of forming a pattern by etching or the like is formed. The alignment film 415 is formed by coating a polyimide film and performing a polishing treatment, etc. On the other hand, the pattern 1 of the embodiment 1 is disposed on the liquid crystal cell 4 The substrate 42 on the image display surface side (hereinafter also referred to as a display surface side substrate) is provided on a transparent substrate 421 such as glass or plastic, and has a color filter 422; a protective film layer on the color filter 422 ( Not shown), set to this protection a transparent electrode (common electrode) 424 disposed on the film layer opposite to the plurality of pixel electrodes 414; and an alignment film 425 disposed on the transparent electrode (common electrode) 424 of the 14 201033687. The color filter 422 is preferably used. A black matrix film that shields light in the gap between the coloring patterns and a color layer corresponding to red, green, and blue of each pixel. The black matrix film is generally made of metallic chromium and has a film thickness of 100. Further, the film thickness of the coloring layer is generally 1 to 3 em. The pixel pattern of the colored layer is arranged in a triangular arrangement, a mosaic arrangement, or a stripe arrangement. Further, the protective film layer is made of an acrylic resin or an epoxy resin, and the film thickness is usually 0.5 to 2 " The method of producing the color filter 422 is not particularly limited, and a color filter manufactured by various conventionally known methods can be employed. The method for producing the color filter can be exemplified by a dyeing method, a pigment dispersion method, a printing method, and a plating method. The common electrode 424 is formed by a method of performing patterning by using an indium oxide (ITO), an oxidized erbium _, a tin oxide, or an oxidized material transparent conductive material by a coin-killing method, and performing patterning using a photo-method or the like. The liquid crystal layer 43 constituting the liquid crystal cell 4 is composed of, for example, nematic liquid crystal molecules 431 having a negative dielectric anisotropy (? ε < 。). The liquid crystal layer 施加 is applied between the pixel electrode of the back side substrate 41 and the common electrode 424 of the display surface side substrate 42 in a direction substantially perpendicular to the substrate surface to be driven. That is, when the voltage is less than the threshold voltage, as in the first! As shown in the figure, the liquid crystal molecules *length (4) are slightly aligned perpendicularly to the substrate surface, and the human-directed linear polarized light from the back side is not subjected to the birefringence effect when passing through the liquid crystal layer 43, and therefore, does not pass through the 15 201033687 The second polarizer 21 of the two polarizing plates 2G. On the other hand, when the voltage is on the electric single, the length of the liquid crystal molecules 431 should be inclined at a predetermined angle to the substrate surface at the magnitude of the pressing, so that the incident linear polarized light from the back side passes through the liquid crystal layer. When it is subjected to the birefringence effect, it changes into a circularly polarized light, and a part of the light passes through the second polarizer 21 of the display side panel 20. In the liquid crystal cell 4 of the embodiment 1, the substrate 2 as described above is formed, and the back side substrate 41 becomes a substrate which is easily charged, that is, a substrate which is hard to be electrically attenuated after being electrically converted. Therefore, when the liquid crystal cell of the mode of the kVA method is used, in the present invention, the back side substrate 41 is the first substrate to be attached to the polarizing plate, and the display side substrate is the first. Substrate. The form of the liquid crystal cell 4 of the present invention is not particularly limited, and the back side substrate has a pixel electrode, the display surface side substrate has a common electrode, and the pixel electrode is common to the pixel electrode, except for the VA method described above. An electric field is applied between the electrodes in a direction substantially perpendicular to the surface of the substrate, thereby driving the TV layer of the liquid crystal layer (Twisted Nematic}, STN mode (Super-teisted Nematic), 0CB (0ptically c〇mpensated)

In the same manner as in the above-described VA method, the back side substrate is the first substrate, and the display surface side substrate is the second substrate. The first polarizing plate 10 has at least a first polarizer u. In this embodiment, the first inner protective film 13 and the first outer protective film 14 ′ laminated on the inner and outer surfaces of the first polarizer 11 are laminated thereon. a first conductive layer 12 on the inner side of the first inner protective film 16 201033687 13 , a first adhesive layer 15 attached to the first substrate 41 of the liquid crystal cell 4 , and a first weak adhesion layer The layer 16 is laminated on the first surface protective film 17 of the first outer protective film 14. The first polarizer 11 can be a well-known person, for example, a polyvinyl alcohol film which adsorbs an iodine complex or a dichroic dye is preferably used. The first inner protective film 13 and the first outer protective film 14 are not particularly limited, and for example, it is preferably composed of a cellulose triacetate resin, a polyester resin, a polycarbonate resin, a cyclic polyolefin resin, or a (meth)acrylic resin. The film. Preferably, the first conductive layer 12 has a surface resistance value of 丨0χ1〇ΐ2 Ω/□ or less, and preferably I.OxIOUq/□ or less. By providing the first conductive layer thus constituted, the charging of the liquid crystal display panel in the laminating step can be more effectively prevented, and the alignment state of the liquid crystal molecules 431 is more difficult to be greatly changed.

The method of measuring the surface resistance value is as shown in the following examples. The material of the first conductive layer 12 is not particularly limited, and a metal oxide such as an oxide oxidized tin (Indium Tin 〇xide), which is mainly composed of oxidized sulphur, and a silicon oxide block, a polymer, and a material may be used. Conductive polymer such as phenanthrene or polyphenylene bromide, or an element or a ionic surfactant added to the conductive compound. Base metal (5) (4) There is no financial method. For example, in the case of metal emulsion, it can be suitably used for ruthenium plating, «CVD method, etc., gas phase = method can be used for rod coating, blade coating, rotation = two: polymer , or a conventionally known coating method such as a spray method. °, cloth, weight coating '17 201033687 Further, the film thickness of the first conductive layer 12 is preferably 100 to 3 〇〇 nm. On the other hand, the second polarizing plate 20 has at least a second polarizer. In the present embodiment, the second inner protective film 23 and the second outer protective film 24 are laminated on the inner and outer surfaces of the second polarizer 21. a second adhesive sound 25 for attaching the second polarizing plate 20 to the second substrate 42 of the liquid crystal cell 4, and a second adhesive layer 24 laminated to the second outer protective film 24 via the second weak adhesive layer 26. Surface protection film 27. The second polarizing plate 20 may not have a conductive layer, but it is preferable to have a conductive layer (second conductive reference layer) from the viewpoint of more surely suppressing charging of the liquid crystal cell 4. The conductive layer can be formed in the same configuration as the first conductive layer described above. Fig. 2 is a flow chart showing an embodiment of a method of manufacturing a liquid crystal display device of the present invention. As shown in Fig. 2, the method for manufacturing a liquid crystal display device of the present embodiment has the following steps: a first polarizing plate original plate preparing step S1, which is prepared by laminating a long first release film on a long first polarizing plate ( a first polarizing plate film formed by the first strip-shaped carrier film and rolled out; the first cutting step S2 cutting the long first polarizing light at a predetermined interval without cutting the first release film a first polarizing plate attaching step S3a, the first polarizing plate peeling off the first release film and being cut off is sequentially attached to the liquid crystal cell; the second polarizing plate original plate preparing step S4 is prepared The long second release film (second strip carrier film) is laminated on the long second polarizing plate, and then the second polarizing plate is rolled out, and the second cutting step 85 does not cut the second die. The long second polarizing plate is cut at a predetermined interval; the second polarizing plate is attached to the step S3b, and the second polarizing plate which is peeled off from the mold film and cut off is sequentially attached to the attached Liquid crystal cell (liquid crystal cell layered body) of a polarizing plate; and inspection step S7, 18 201033687 Sequentially check the embodiment fabricated by the steps of such a liquid crystal display panel. That is, the laminating step S3 has the first polarizing plate attaching step S3b and the second polarizing plate attaching step 13° on the other hand, and the third to sixth figures are the first embodiment shown in FIG. A schematic configuration diagram of a manufacturing apparatus for a method of manufacturing a liquid crystal display device. Hereinafter, a method of manufacturing a liquid crystal display device and a manufacturing apparatus of the present embodiment will be specifically described with reference to Figs. 3 to 6 . As shown in FIG. 3, the manufacturing apparatus of the liquid crystal display device of this embodiment

The first polarizing plate original plate preparing mechanism (the first polarizing plate original plate preparing step S1) is used to roll up the elongated first first release film 51 on the long first polarizing plate (first strip shape) The first polarizing plate original plate 61 formed by the carrier film; the first cutting mechanism (first cutting step S2) cuts the elongated shape at a predetermined interval without cutting the first release film 51. a polarizing plate; a first polarizing plate attaching mechanism (first polarizing plate attaching step S 3 a) for sequentially peeling the first polarizing film 51 and cutting the first polarizing plate The cell 4 is a winding mechanism (not shown) for bringing the liquid crystal cell 4 to which the first polarizing plate is attached to the horizontal side (10). a second polarizing plate core preparing mechanism (the second polarizing plate is prepared by stepping), and is used for preparing a long second release film 52 (second strip-shaped carrier medium) to be laminated on the long second polarizing plate. The second polarizing plate original plate 62 is formed and unwound; the second cutting mechanism (second cutting step S5) 'cuts the elongated shape at a predetermined interval without cutting the first mixed film 62 The first polarizer, the second polarizer attaching mechanism (the second polarizer attaching step S3b), and the second polarizing plate of the second lion is sequentially attached to the attached twisted- The liquid crystal cell of the polarizing plate (the liquid crystal cell layer 19 201033687 body); and the inspection mechanism (inspection step S7) optically sequentially inspect the liquid crystal display panel γ produced by the steps. That is, in the present embodiment, the lamination mechanism has the first polarizing plate attaching mechanism and the second polarizing plate attaching mechanism. Specifically, the first polarizing plate original plate preparing mechanism (the first polarizing plate original plate preparing S1) is as shown in FIG. 4, and is configured to laminate a long first polarizing plate 1 (4th) The lower polarizing plate of the first first release film 51 (the upper side in Fig. 4) is prepared to be wound into a roll shape and sequentially wound up. Next, the first cutting mechanism (first cutting step 82) is configured to prepare the cutting mechanism 130 as shown in Fig. 4, and the long first polarizing plate 10 is cut at predetermined intervals using the cutting mechanism. Broken, become a leaf body. x "1-- ' With respect to the first release film 51, the first polarizing film 51 is not cut (so-called half cut), and the first polarizing plate 1 is cut into a leaflet body, and then connected by the elongated first release film 51. And a first strip-shaped body to be conveyed by a roller (the plurality of second light-plates cut at a predetermined interval are continuously formed in a peelable state and formed in a first shape of the first belt-shaped carrier )). Further, the interval of the cutting is due to the size of the liquid crystal cell (the first substrate 41) as the bonded ^ gA - ^ . Receiver, first

The first-polarizing plate attaching step 8 is as shown in FIG. 4, and has a facing-pressing member and a second working member, and the aforementioned first-polarizing plate 10 is provided. And the other preparation (supply) = element 4 simultaneously sent between the pressing members, sequentially attached (from the surface of the liquid crystal cell 4 to form a liquid crystal cell laminate. Here, the state - The pressurizing member is biased upward in the fourth pass, 20 201033687, and the second pressurizing member is in contact with the lower surface of the liquid crystal cell 4, and the aforementioned The first pressing member (for example, the attaching roller 15) holds the first polarizing plate 10 and the liquid crystal cell 4 and carries the both to the downstream side of the supporting roller 150b. Further, the first polarizing plate attaching mechanism (the first polarizing plate attaching mechanism) A polarizing plate attaching step S3a) has a blade 140, and the first release film 51 is peeled off from the first polarizing plate 10 by the blade 14 before the attaching roller 150a and the supporting roller 15B. The exposed first polarizing layer 15 is attached to the liquid crystal cell 4. The first polarizing plate is attached to the step S3a. The first polarizing plate 1A is a back side substrate (first substrate) 41 which is hard to be electrically attenuated after being charged. On the other hand, the second polarizing plate original plate preparing mechanism (second polarizing plate original plate preparing step S4) is as described above. In the fifth embodiment, the second polarizing plate original plate 62 in which the long second polarizing plate 20 (the upper side in the fifth middle direction) and the long second release film 52 (the lower side in the fifth drawing) are laminated is prepared. The second cutting mechanism (second cutting step S5) is configured to have a cutting mechanism 230 as shown in Fig. 5, and is used in a state in which it has been wound into a roll. The cutting mechanism 23 cuts the long second polarizing plate 20 at a predetermined interval to form a leaf blade body. However, the second release film 52 is formed so as not to be cut (so-called half cut), and the second polarizing plate is used. After being cut into the leaflet body, the film is joined by the long second release film 52 to form a second strip-shaped body that can be conveyed by the roller (the plurality of second polarizing plates cut at predetermined intervals are peelable) Continuously forming on the second strip of the second strip-shaped carrier film. Further, the interval of the cut is due to The size of the liquid crystal cell (second substrate 42) to be bonded to the object. 201033687 Next, the 'second polarizing plate attaching mechanism (second polarizing plate attaching step S3b) is as shown in Fig. 5, and has an opposite setting a third pressing member and a fourth pressing member, and the second polarizing plate 20 and the liquid crystal cell laminated body X produced through the first polarizing plate attaching step S3a are simultaneously fed into the pressing members The second polarizing plate 20 is sequentially attached (automatically attached) to the surface of the liquid crystal cell laminated body X to form the liquid crystal display panel Y. Here, the third pressing member in the present embodiment is attached to In the fifth drawing, the attaching roller 250a of the second polarizing plate 20 is pressed downward with the potential energy, and the fourth pressing member abuts against the lower surface of the liquid crystal cell laminated body X and the third pressing member. Roller® 250a) supports the second polarizer 10 and the liquid crystal cell laminate X and transports the support roller 250b to the downstream side. Further, the second polarizing plate attaching mechanism (second polarizing plate attaching step S3b) has a blade 24A, and the second release film 52 is used before the attaching roller 250a and the supporting roller 250b. The second polarizing plate 2 is peeled off by the second polarizing plate 2, whereby the first polarizing plate 20 is attached to the liquid crystal cell laminated body X via the exposed second adhesive layer 25. Further, in the second polarizing plate attaching step S3b, the second polarizing plate 2 is attached to the display surface side substrate (second substrate) 42 which is easily attenuated after being charged. The scent inspection mechanism (inspection mechanism S7) is a liquid crystal for sequentially (automatically checking) the second stage of the second polarizing plate attaching mechanism (after the second polarizing plate attaching step S3b) as shown in FIG. The display panel γ is configured to directly illuminate the light source 310 under the liquid crystal display panel γ, and the CCD camera 330 captures the transmitted light to obtain image data, and performs image analysis processing on the obtained image data. Determine the presence or absence of defects, and then judge the good or bad. 22 201033687 In order to shorten the required time, the inspection mechanism is placed in the second attachment mechanism. The inspection step S7 is shorter than the interval of the attachment step S3b. Ghost is the final body, and the liquid crystal display panel γ is configured to be attached to the _ board. After the first S3b, it is advisable to carry out the inspection within 丨 minutes, preferably 4 seconds, preferably within 20 seconds ‘especially within 10 seconds. ^ The image is prepared by the first polarizing plate original plate preparing step S1 to the first-preserving step S3b with the first polarizing plate original plate preparing step axis

The calender plate is attached with a cross-sectional wedge pattern of the film having the first polarizing plate between the steps S3b. As shown in Fig. 7, in the first polarizing plate original plate preparing step S1, the layer has the elongated first plate 61 as the first polarizing plate 10 and the first first polarizing film 51. The polarizing plate is first = "cutting step S2" By the cutting mechanism 13, a cut is formed on the light plate 1G at predetermined intervals, but the aforementioned first release film is kept in a long shape (3).

Next, in the first polarizing plate attaching step S3a, the first split mold 51 is peeled off from the first polarizing plate 1G, and only the first polarizing plate is in the first adhesive layer.

Further, the liquid crystal cell layered body X is continuously produced by sequentially laminating on the first substrate 41 of the liquid crystal cell 4. On the other hand, as shown in Fig. 8, in the second polarizing plate original plate preparing step μ, the second polarizing plate original plate 62 in which the long second polarizing plate 20 and the long second releasing film 52 are laminated is formed. Further, in the second cutting step S5, a cut is formed on the second polarizing plate 20 at a predetermined interval by the cutting mechanism 23, but the second release film 23 is not cut and is green. (Making a second strip). * flute first polarizing plate attaching step S3b, the second release film 52 is peeled off by the first polarizing plate 20, σ古_'substrate 42, continuous liquid crystal display, and second polarizing plate 20 interposed The second adhesive layer 25 is sequentially laminated on the first panel Y of the liquid crystal cell 4. According to this embodiment

The manufacturing device and the manufacturer of the liquid daily display device are attached with a conductive layer U-light plate by the above-mentioned steps, that is, the first substrate (/substrate) which is difficult to be potential-attenuated after being charged, and then, with the moxibustion The second substrate (display surface side substrate) whose potential is attenuated is attached to the second polarizing plate, whereby liquid crystal cells are suppressed from being charged, and even in the attaching step (the optical inspection step is performed after lamination, liquid crystal is not received. The adverse effect of the charging of the cell can be implemented (4). Therefore, there is no erroneous detection, which can shorten the material. The wire is a liquid crystal display panel that can continuously manufacture a high-speed method, which can greatly improve production efficiency.

The reason why the charging of the unit cell is suppressed is not determined. However, in the liquid crystal cell of the VA mode of the present invention, the back side substrate (the first substrate) is formed between the circuit electrodes of the wiring such as the wiring. It has a switching element (thin film transistor). Therefore, when it is temporarily charged, it is difficult to attenuate the potential, and when the liquid crystal cell is charged while being rubbed against the support of the viewer, the state of being charged continues. Specifically, when electricity is charged, the electricity stored on the surface of the substrate is moved to the pixel electrode or the circuit portion, and both of them become in a state in which the charge is stored, but in the subsequent discharge, although the charge is fast Since the circuit portion passes through, the pixel electrode is electrically disconnected from the circuit portion by the switching element (thin film transistor) in the non-driving state, so that the electric charge flows to the circuit portion side 24 201033687, and is easily stored as a state of storage. In this case, it is considered that the back side substrate in the above embodiment becomes difficult to be electrically attenuated after being charged. According to the apparatus and method of the present embodiment, it is presumed that the polarizing plate is attached to the back side substrate (first substrate) in comparison with the display surface side substrate (second substrate), whereby the first substrate having such a configuration can be prevented from being The friction between the rollers is attached to suppress the charging of the liquid crystal cells. Further, in the present embodiment, it is a matter of course that conventionally known technical matters can be appropriately employed within the scope of not obscuring the effects of the invention. For example, in the present embodiment, the case where the first conductive layer is provided between the first adhesive layer and the first inner protective film will be described. However, in the present invention, the position at which the first conductive layer is formed is not particularly limited. It is disposed at any position of the first polarizing plate, that is, from the first surface protective film to any position of the first adhesive layer. Further, the first polarizing plate or the second polarizing plate may have any other layer having other optical functions or physical functions, such as a brightness improving layer, a retardation layer, an antireflection layer, or the like, in addition to the above layer. Further, in the above-described embodiment, the long first release film and the long second release film are used, and the half-cut is used in the cutting step, and the polarizing plate as the blade body is connected by the release film. After the cutting step, it can be transported as a long body before being attached, but the present invention is not limited to this aspect. For example, a strip-shaped body formed on a strip-shaped carrier film in a state in which a long polarizing plate longer than a liquid crystal cell is peeled off may be formed, and the strip-shaped carrier film may be folded back using a blade edge. Partially stripping the long polarized light 25 201033687 plate, leaving the part of the long polarizing plate _ to the liquid 曰 = substrate ' sequentially supplied to the substrate' and then attaching the long polarizing plate to correspond to: The length is cut off. The automatic attaching method is not particularly limited to the method disclosed in Japanese Laid-Open Patent Publication No. Hei. No. 2,537,418. In the automatic attaching method, after the V-step (layering step) of the liquid crystal display panel is formed (after the lamination mechanism), the inspection step (inspection mechanism) of the crystal display panel is also set. The idea is to effectively exert the effect of the present invention which can shorten the time required without incurring the erroneous detection of the panel inspection, and to ensure the high-speed continuous manufacturing of the liquid crystal display panel. In the above-described embodiment, the pressing member is a bonding roller and a supporting parent. The present invention is not limited thereto, and a plate-like member having elasticity or the like may be used as the pressing member. Furthermore, in the manufacturing method of the above-described embodiment, the liquid crystal cell of the VA type is used as the liquid crystal cell to which the polarizing plate is attached. However, as described above, the present invention is not limited to this embodiment. Other methods of liquid crystal cells can also be applied. Hereinafter, the embodiment 2 of the present invention in which the liquid crystal cell is an liquid crystal cell using an in-plane switching (IPS; In-Plane Switching) method will be specifically described. (Embodiment 2) Fig. 9 is a cross-sectional schematic view showing a liquid crystal display panel of a liquid crystal cell using a high-speed continuous manufacturing 11> In Fig. 9, the same members as those in Fig. 1 are denoted by the same reference numerals, and the description is omitted. 26 26, 2010, 687. As shown in Fig. 9, the liquid crystal cell 4 and other liquid BB cells of the positive 8 mode used in the second embodiment are shown. Similarly, the liquid crystal layer 43 is held between the pair of substrates 41' and 42. Further, among the pair of substrates, the display surface side substrate 42' on the display surface side of the liquid crystal cell 4' does not have a conductive member such as a pixel electrode or a common electrode, and on the other hand, is located in the liquid crystal cell 4, The back side substrate 41' on the back side has a structure for driving the liquid crystal layer 43, a pixel electrode and a common electrode, and an electric field is applied between the pixel electrode and the common electrode, that is, in a direction substantially parallel to the surface of the substrate. Driving the liquid crystal layer 43, Specifically, the back side substrate 41 ′ is provided on a transparent substrate 411 such as glass or plastic, and has a circuit portion including a plurality of gate wirings and a plurality of common electrode wirings, and the plurality of gate wirings and the plurality of common electrodes a plurality of source wirings disposed between the wiring and the parent of the insulating film; a thin film transistor (TFT) 412 as a plurality of switching elements is disposed at an intersection of the plurality of gate wirings and the plurality of source wirings; 413 is provided in the plurality of switching elements (thin film transistors) 412; a plurality of transparent electrodes (pixel electric φ poles) are provided in the protective film 413, and are connected via through holes formed through the protective film. Each of the plurality of switching elements 412; the plurality of common electrodes 416 are provided in the protective film 413, and are connected to a plurality of common electrode wirings via through holes formed through the gate insulating film and the protective film; The alignment film 415 is provided on the plurality of transparent electrodes (pixel electrodes) 414 and the plurality of common electrodes 416. The thin film transistor 412 has a gate electrode, a semiconductor layer opposed to the gate electrode via a gate insulating film, and a source electrode and a "electrode" which are individually connected to the semiconductor layer. 27 201033687 On the other hand, the display surface side substrate 42 has a color filter 422 on a transparent substrate 421 such as glass or plastic, a protective film layer (not shown) provided on the color filter 422, and The alignment film 425 on the surface coating layer. The liquid crystal layer 43 constituting the liquid crystal cell 4 is generally composed of nematic liquid crystal molecules 431 having positive dielectric anisotropy (? ε > 0). The liquid crystal layer 43' is driven by applying an electric field in a direction substantially parallel to the surface of the substrate between the pixel electrode 4A in the back side substrate 41' and the common electrode 416. That is, if the voltage is less than the threshold voltage, the liquid crystal The long axis of the molecule 431 is parallel to the substrate surface and is parallel or orthogonal to the absorption axis of the first polarizer of the first optical plate 10, so that the incident linear polarization from the backlight side is not subjected to birefringence when passing through the liquid crystal layer 43. In contrast, when the voltage is above the threshold voltage, most of the liquid crystal molecules 431 except for the vicinity of the substrate surface have a long axis parallel to the substrate surface at a predetermined angle depending on the magnitude of the voltage. Rotate in the in-plane direction (right The absorption axis of the first polarizer 11 of the first polarizing plate 10 is inclined) 'Therefore, the incident linear polarized light receives the birefringence effect and changes into a circularly polarized light. As a result, the quantitative light corresponding to one of the rotating legs of the liquid crystal molecules The polarizer 11 of the first polarizing plate 10 is referred to. In the embodiment 2 of the liquid crystal cell using the IPS method, the display surface side 42 is formed, and compared with the back side substrate 41, The conductive member of the pixel electrode or the common electrode is less likely to cause potential decay after charging. Therefore, in the second embodiment, the display surface side sill 42 is the first substrate to which the polarizing plate should be attached first. The inner side sill 41' becomes the second substrate. As a result, the method of manufacturing the liquid crystal display device of the second embodiment and the method of manufacturing the second substrate are the polarizing of the display side of the first substrate The plate is a first polarizing plate, the back side substrate is a second substrate, and the back side polarizing plate is a second polarizing plate. However, the other configuration is the same as the manufacturing method and manufacturing apparatus of the above-described embodiment, and thus the description is omitted. According to the method of manufacturing a liquid crystal display device of the second embodiment, the display surface side substrate 42' is a first substrate, and the first polarizing plate is attached to the first substrate, and then The back side substrate 41 is a second substrate and is bonded to the second substrate second polarizing plate, whereby the liquid crystal cell 4 is suppressed from being charged, and therefore, the optical of the liquid crystal display panel is implemented even after the attaching step. The inspection step is not affected by the electrification of the liquid crystal cell, and the inspection can be performed. As a result, the time required can be shortened without erroneous detection, so that the IPS liquid crystal display panel can be continuously manufactured at a high speed. The production efficiency can be greatly improved. The reason for suppressing the charging of the liquid crystal cell is not certain, but it is presumed that in the present embodiment 2 of the liquid crystal cell 7C using the IPS method, the display side substrate does not have the conductivity as the pixel electrode or the common electrode. Since the member is temporarily charged, it is difficult to attenuate the potential, and when the liquid crystal cell is charged due to friction with the attached roller, the charged state can be maintained. Furthermore, in the IPS method, in addition to the erroneous detection of the inspection step, electrostatic breakdown of the switching element (thin film transistor) also becomes a problem. The destruction mechanism of the switching element in the liquid crystal cell of the IPO mode is considered to be excessive current flowing through the switching element when the electric charge stored on the display surface side substrate (first substrate) is discharged toward the back side substrate (second substrate). This destroys the switching element. According to the apparatus and method of the present embodiment, it is presumed that the electrostatic breakdown of such a switching element is also suppressed. Further, in the present invention, other mechanisms (steps) may be appropriately present between the respective steps (for example, between the lamination step (the lamination step) and the inspection mechanism (inspection step) within a range that does not impair the effects of the present invention. EXAMPLES Next, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto. (Measurement of chargeability of liquid crystal cell substrate) CF substrate constituting liquid crystal cell of VA mode (with filter The color of the substrate (substrate) and the TFT substrate (substrate having a thin film transistor) measure the easiness of charging. Specifically, the two ends of the substrate are placed and fixed to a support table made of PTFE (polytetrafluoroethylene). , using a cloth to wipe the PTFE-made disc and the SUS304 disc (the thickness of 〇.8mm, 0 250mm) SUS304 placed on the side of the disc several times and then electrified 'to make the SUS304 disc attached On the fixed substrate, the substrate was then separated. Then, between the series of operations, the charge amount of the substrate was measured from the back side of the bonding surface of the substrate using a charge amount measuring device (manufactured by SMC, IZH10). As described below Table 1 and Figure 10. [Table 1] Unit [k/V] Initial charge and charge treatment after charge [〇] 30[s] 60[s] 90『sl 120[s] 180[ s] 240[s] Ι?τ substrate 0.1 ] 5.8 2.1 1.4 1.1 0.9 0.5 0.2 0.1 Substrate 0.05 6.1 0.05 0.05 0.05 0.05 0.0 0.05 0.05 As shown in Table 1 and Figure 10, it is known that the TFT substrate is made of PTFE.

After the disc is separated, it will briefly become charged. On the other hand, it is understood that the CF 30 201033687 substrate is returned to the initial state after the PTFE disc is separated. That is to say, in the VA liquid crystal cell used in this test, it is known that the tft substrate is easily charged. That is, it is equivalent to the first substrate and the CF substrate which are hard to be electrically attenuated after charging, and it is difficult to charge the CF substrate, that is, it is easy to be charged. A second substrate whose potential is attenuated. Hereinafter, in the present examples and comparative examples, the TFT substrate was used as the first substrate, and the CF substrate was used as the second substrate. <Example 1> The first polarizing plate attaching step (S3a) in which the first polarizing plate is attached to the rectangular liquid crystal cell by the long side side is performed by using the apparatus described in the first embodiment, and then The liquid crystal cell is rotated (rotated back) by 9 degrees in the horizontal direction, and after the alignment (alignment) is performed, 'the second polarizing plate attaching step (S3b) of attaching the second polarizing plate to the liquid crystal cell by the short side is performed, Continuously manufacturing 2 之 film LCD panels. The attachment speed of each polarizing plate and the transport speed of the liquid crystal cell were 20 〇mm/s. Further, the materials used and the specifications of the machine are as follows. Furthermore, the measurement of the surface resistance of the conductive layer contained in one portion of the original plate of the polarizing plate is performed in accordance with SK69U 5.13. Specifically, the polarizing plate was cut into the size of MGmmxHm as a test piece, and a high-resistance/low-power meter manufactured by Mitsubishi Chemical Corporation was used... 夕, up (quote σσ name) (model: Mcp_HT45 〇) and probe (Model: MCP-SWB01) The surface resistance value of the test piece was measured. Further, the attaching speed is used as a polarizing plate and a liquid crystal cell, and the measured value of the speed between the lepton and the brancher is attached by the following. ~, the attachment brightness of the polarizing plate is the same as the transport speed of the liquid crystal cell. (Materials and machines used) 31 201033687 • Liquid crystal cell: Vertical alignment type (face size 32 inches). • First polarizing plate original plate and second polarizing plate original plate: manufactured by Nitto Denko Corporation, trade name "VEG1724DU-AC" (including conductive layer: surface resistance value 1.0Χ1011Ω/□, film thickness 150//m) • Attached roller ( Attached side: Made by Jiagui Roller Co., Ltd., model "LM4070E", made of conductive crystal, hardness 70°, surface resistance value 1·0χ 106/□, roller diameter 100mm • Support roller (support side): expensive Manufactured by Roller Co., Ltd., model "Black EC-N970", made of conductive urethane, hardness 70°, surface resistance value 1.0x108/□, roller diameter 200mm <Examples 2 to 4> Adhesive speed of polarizing plate The transport speeds of the liquid crystal cells were 150 mm/s, 100 mm/s, and 50 mm/s, respectively. Otherwise, in the same manner as in the first embodiment, 2000 liquid crystal display panels were produced. <Comparative Example 1> The order of attachment is reverse to that of the first embodiment, that is, after the second polarizing plate attaching step (S3b) is performed, the first polarizing plate attaching step (S3a) is performed, and otherwise In the same manner as in Example 1, 2000 liquid crystal display panels were produced. <Comparative Example 2 to 4> The attachment speed of the polarizing plate and the transport speed of the liquid crystal cell were 150 mm/s, 100 mm/s, and 50 mm/s, respectively, and otherwise, the same as in the first embodiment, 2000 was produced. The liquid crystal display panel. <Comparative Example 5> The second polarizing plate attaching step (S3b) and the first polarizing plate attaching step (S3b) based on the measurement results of the charged amount of the liquid crystal cell substrate (Fig. 1 and 10 32 201033687) A 2000 liquid crystal display panel was produced in the same manner as in Comparative Example 1, except that the time interval (pitch) between S3a) was 600 seconds. (Measurement of the amount of charge) In the examples and the comparative examples, after the respective attaching steps, a charge amount measuring device (Feng Yigong > manufactured by Konica Minolta Co., Ltd., model SK-200) was set, and the charged amount of the attached battery was measured. The liquid crystal display panel of the film calculates the average value. The results are shown in Table 3 below. (Evaluation of Inspection Procedure) Further, the liquid crystal display panels produced in the examples and the comparative examples were subjected to a inspection step by an optical inspection apparatus disposed on the downstream side of the attaching step of the subsequent stage. In the inspection step, light is irradiated from the lower surface side of the liquid crystal display panel, and the CCD camera disposed on the upper surface side detects the transmission state of the light which should be isolated, and performs image analysis processing based on the detection result. Hereinafter, each of the attaching step and the inspecting step in the above-described examples and comparative examples, that is, the required time required between the steps, is shown in the second table below. 201033687 [Table 2] Transport speed (attach speed) [mm/s] 1st attach time interval 2nd attach time [S] Spacing check time [S] Total time [s] Transfer [s] Cycle [s] transport [s] alignment [s] transport [s] Example 1 Comparative Example 1 200 8 5 8 5 8 10 8 8 60 Example 2 Comparative Example 2 150 11 7 11 7 11 13 11 11 80 Example 3 Comparative Example 3 100 16 10 16 10 16 20 16 16 120 Example 4 Comparative Example 4 50 32 20 32 20 32 40 32 32 240 Comparative Example 5 200 8 5 8 5 8 10 600 8 652 In the above inspection step, it is considered that liquid crystal The misalignment of the molecules is not the cause of the erroneous detection. Even if one piece is present, the display is X, and the case where the erroneous detection does not occur is ◦, and the result is shown in the third table below. [Table 3] Attachment speed and transport speed [mm/s] Charge before charging [k/V] Attachment procedure of the previous section Charge amount [k/V] Attachment procedure of the back section Charge amount [k/V] Evaluation evaluation total time [S] Example 1 200 0.02 S3a 0.12 S3b 0.08 〇60 Example 2 150 0.04 0.09 0.11 〇80 Example 3 100 0.05 0.08 0.21 〇120 Example 4 50 0.01 0.11 0.17 〇240 Comparative Example 1 200 0.02 S3b 1.77 S3a 1.91 X 60 Comparative Example 2 150 0.06 1.56 1.98 X 80 Comparative Example 3 100 0.03 1.92 2.01 X 120 Comparative Example 4 50 0.05 1.61 1.88 X 240 Comparative Example 5 200 0.02 1.78 1.93 〇652

According to the results shown in Table 3, it is considered that the CF is easy to be attenuated after being charged.

In the comparative examples 1 to 4 in which the substrate (second substrate) was first subjected to the attaching step S3b, erroneous detection occurred in the detecting step, but the substrate (first substrate) of the TFT 34 201033687 which was difficult to be attenuated after charging was attached first. In Examples 1 to 4 of the step S3a, erroneous detection did not occur in the inspection step. Further, in Comparative Example 5, even if the CF substrate (second substrate) which is easily attenuated after charging is subjected to the attaching step S3b, the inspection step can be performed by the time interval of 6 sec. In order to prevent erroneous detection, in the case of Examples 1 to 4, compared with Comparative Examples 1 to 4, the production time was extremely lowered as long as the required time was extremely long. (Comparative Examples 6 to 10) Next, in the attaching step of the front stage and the rear stage, the substrate and the gap (void) between the attaching roller (polarizing plate side) and the supporting roller (substrate side) can be changed. The contact area of the support roller was changed, and the same line of sight as in Example 丨 and Comparative Example 1 was carried out. The test conditions and test results are as described in Table 4 below. [Table 4] Attachment speed [mm/s] Charge amount in the back section of the front section [kV] Evaluation of the attached bubble Evaluation of the inspection procedure Attachment step Contact area of the substrate and the roller [cm2] Attachment step Contact of the substrate with the roller Area [cm2] Example 1 200 S3a 28.0 S3b 16.0 0.08 〇Comparative Example 1 28.0 16.0 1.91 〇X Comparative Example 6 16.0 9.0 1.89 〇X Comparative Example 7 200 S3b 12.0 7.0 1.37 〇X Comparative Example 8 8.0 S3a 4.5 0.87 Λ X Comparison Example 9 6.0 3.5 0.45 X 〇Comparative Example 10 4.0 —^ — 2.3 Evaluation of 0.21 X 〇 attached bubble: 〇No, △ sometimes occurs, χ must occur as a result of the fourth table' even if it is easy to electrify When the CF substrate (second substrate) whose potential is attenuated is first subjected to the attaching step S3b, the contact area between the substrate and the roller can be reduced to suppress the charging of the liquid crystal cell (Comparative Example 9, zuA 〇 33687 10). The situation has entered the state. The contact pressure between the substrate and the roller is lowered and the bubble is accumulated, and the contact surface of the substrate and the lepton is increased by the opposite of the substrate, and the contact pressure between the two helmets is controlled to suppress the entry of the bubble (Comparative) For example, the liquid cell is easy to be charged, and the error area has been generated in the inspection step. In the case of Example 1, the judgment is made by the contact between the substrate and the roller. It is known that the two substrates and the roller are connected to each other. 4 ❹ φ 电J. Prevention of erroneous detection in the inspection step. Fig. 1 is a cross-sectional mode display of the liquid crystal display panel manufactured in the embodiment i. (4) A flowchart showing an embodiment of a method of manufacturing the liquid crystal display device. = = 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图The schematic diagram of the second polarizing plate original plate preparation step 4 and the second cutting step S5 in the third drawing is shown in Fig. 3. Fig. 6 is an enlarged view showing the inspection step S7 in the third drawing. Polar plate original board preparation step A section 36 of the film having the first polarizing plate between the first partial surface and the second polarizing plate is formed. FIG. 8 shows a relationship between the second polarizing plate original plate preparing step S4 and the second polarizing plate attaching step S3b. Fig. 9 is a cross-sectional schematic view of a liquid crystal display panel manufactured in the second embodiment. Fig. 10 is a graph showing the results of measuring the easiness of charging of a CF substrate and a TFT substrate. [Main component symbol description]

62... Second polarizing plate original plate 130.. Cutting mechanism 140.. Blade 150a... Attaching roller 150b... Supporting roller 230.. Cutting mechanism with step 240.. Blade 250a. .. Attachment roller 250b... Support roller 310.. Light source 330.. . CCD camera 411, 421... Glass substrate 412.. TFT 413.. Interlayer insulating film 414, 424... Transparent electrode (pixel electrode) 415, 425... alignment film 416.. common electrode 422.. color filter 431, 431'... liquid crystal molecule 51.. first polarizing plate original plate preparation step 52.. first cut Breaking step 1. Manufacturing method of liquid crystal display device 4, 4'... liquid crystal cell 10... first polarizing plate 11... first polarizer 12.. conductive layer 13.. first Inner protective film 14: First outer protective film 15. First adhesive layer 16: First weak adhesive layer 17... First surface protective film 20.. Second polarizing plate 21.. Second Polarized light 23: second inner protective film 24: second outer protective film 25.. second adhesive layer 26.. second weak adhesive layer 27.. second surface protective film 41, 41' ...back side substrate 42, 42'... display side substrate 43, 43'... liquid crystal layer 51.. first release film 52 . . . second release film 61.. first polarizing plate original plate 201033687 S3... lamination step S3a... first polarizing plate pasting step S3b... second polarizing plate attaching step 54.. second polarizing Plate original plate preparation 55.. Second cutting step S7... Checking step X.. Liquid crystal cell laminated body Y. .. Liquid crystal display panel

38

Claims (1)

201033687 VII. Patent application scope: 1. A method for manufacturing a liquid crystal display device, comprising: a lamination step, which is formed on the front and back sides of a liquid crystal cell having a liquid crystal layer between a first substrate and a second substrate, and the layers are the same or different. a polarizing plate as a liquid crystal display panel; and an inspection step of optically inspecting the liquid crystal display panel, and the method of manufacturing the liquid crystal display device is characterized in that: the step of laminating has the following steps: first polarizing plate And a step of attaching the first polarizing plate to the first substrate which is difficult to be potential attenuated after being charged with the second substrate; and attaching the first polarizing plate to the first polarizing plate attaching step Thereafter, the first polarizing plate is attached to the second substrate which is easily attenuated by potential after being charged with the first substrate. The method of manufacturing a liquid crystal display device according to claim 1, wherein the step of attaching the light plate is to supply a plurality of first-polarizing plates cut at predetermined intervals. a strip-shaped body continuously formed on the first belt-shaped carrier film in a peelable state, and the first strip-shaped carrier film is folded back using the crucible, and the first strip-shaped mask is sequentially peeled off. A polarizing plate 'will be peeled off [the polarizing plate is attached to the liquid crystal cell supplied sequentially and is longer than the liquid crystal cell - the polarizing plate Part of the liquid crystal cell supplied in sequence - the tile team - a substrate of the polarizing plate, and then the portion of the long-shaped polarizing plate to which 1 r \ 201033687 has been attached corresponds to the length of the liquid crystal cell In the step of cutting, the second polarizing plate attaching step is: supplying a plurality of second polarizing plates cut at predetermined intervals in a peelable state and continuously formed on the first strip-shaped carrier film along the long direction a strip-shaped body, and the second strip-shaped carrier film is folded back by using a knife to sequentially peel off the second polarizing plate from the second strip-shaped carrier film, and the second polarizing plate _ is sequentially attached thereto a step of the second substrate of the liquid crystal cell of the first polarizing plate; or: supplying the elongated second polarizing plate longer than the liquid crystal cell in a state of being separated from each other on the first carrier film The second strip is formed by the second strip-shaped carrier film after the second strip-shaped carrier film is folded back using a knife. Stripping the long second polarizing plate, and attaching the peeled long first polarizing plate to the second substrate of the liquid crystal cell to which the first polarizing plate is attached, and then The portion of the elongated second polarizing plate to be attached is cut in accordance with the length of the liquid crystal cell, and the checking step is performed by the light pre-processing method after the second polarizing plate attaching step. The steps of the liquid crystal display panel. The method of manufacturing a liquid crystal display device according to claim 1 or 2, wherein the first polarizing plate attaching step is performed by causing the first polarizing plate and the other liquid crystal cell to be at least one of the other portions. a state of being overlapped between the first pressing member pressed by the first polarizing plate side and the second pressing member pressed by the liquid crystal cell side, and the first polarizing plate and the liquid crystal cell pair A pressing member and a second pressing member are relatively moved to perform. The method for manufacturing a liquid crystal display device according to any one of the preceding claims, wherein the second polarizing plate attaching step is performed by attaching a liquid crystal cell to which a first polarizing plate is attached. And the second polarizing plate is in a state in which at least the portions overlap each other, and is held by the third pressing member pressed by the second polarizing plate side and the first polarizing plate side attached to the liquid crystal cell The liquid crystal cell in which the first polarizing plate is laminated and the second polarizing plate are relatively moved between the fourth pressing member and the third pressing member and the fourth pressing member. The method of manufacturing a liquid crystal display device according to any one of the preceding claims, wherein the first substrate has: a circuit portion including a plurality of gate wirings; and a plurality of gate wirings disposed orthogonally with an insulating film a plurality of source wirings; a plurality of switching elements are disposed at an intersection of the plurality of gate wirings and a plurality of source wirings; and a plurality of pixel electrodes connected to the plurality of switching elements The second substrate has a common electrode disposed opposite to the plurality of pixel electrodes, and the liquid crystal layer is between the pixel electrode and the common electrode, and is substantially perpendicular to the substrate surface of the first substrate and the second substrate. An electric field is applied to drive the person. 6. The method of manufacturing a liquid crystal display device according to any one of the following claims, wherein the first substrate does not have a conductive member, and the second substrate has a surface substantially parallel to the substrate surface In the direction of her, an electric field is applied to drive the pixel electrode and the common electrode of the liquid crystal layer. 41. The polarizing plate of the liquid crystal display device of the present invention has a surface resistance value of 1.0×10. 7. The method of claim 1 , wherein the first polarizing plate has a conductive layer of Ω/□ or less. . Including: laminated body, department The first polarizer is attached to the first substrate which is less likely to be potential-degraded after being charged than the second substrate; and the manufacturing device of the liquid crystal display device, the second polarized light (four) is constructed And disposed in the subsequent stage of the first-biasing hybrid mechanism, for attaching the second polarizing plate to the second substrate which is easily attenuated by the potential after the first substrate is charged. 9. The manufacturing apparatus of the liquid crystal display device of claim 8, wherein the first polarizing plate attaching mechanism has a blade that is folded back by the strip-shaped carrier film. The first strip-shaped carrier film is formed by peeling off the first polarizing plate in sequence, and the plurality of first polarizing plates cut at a predetermined interval in the strip-like system are detachably formed along the long direction on the strip-shaped carrier film. And the attaching mechanism is to attach the first polarizing plate that has been stripped to the first substrate of the liquid crystal cell sequentially supplied; or have the following: the blade is the first strip by the first strip After the strip-shaped carrier film is folded back, the long first-shaped polarizing plate is partially peeled off from the first strip-shaped carrier film, and the first strip-shaped system is longer than the liquid crystal cell 42 201033687 long first polarizing plate is a state in which the peeling is formed on the first strip-shaped carrier film; the attaching mechanism attaches a portion of the elongated first polarizing plate to the first substrate of the liquid crystal cell sequentially supplied; and cutting The breaking mechanism is a part of the long first polarizing plate The second polarizing plate attaching mechanism has a cutting edge, and the second strip-shaped carrier film is folded back by the strip-shaped body and sequentially stripped by the second strip-shaped carrier film. a second polarizing plate, wherein the plurality of second polarizing plates cut at a predetermined interval in the strip-like system are continuously formed on the second strip-shaped carrier film in a peelable state; and the attaching mechanism is The stripped second polarizing plate is attached to the second substrate of the liquid crystal cell to which the first polarizing plate is attached; or has a cutting edge, and the second strip-shaped carrier film is formed by the second strip After the folding back, the second polarizing plate is partially peeled off from the second strip-shaped carrier film, and the second strip-shaped system is longer than the liquid crystal cell, and the second polarizing plate is formed in a strippable state in the second strip shape. a carrier film; a affixing mechanism for attaching a portion of the elongated second polarizing plate to the second substrate of the liquid crystal cell to which the 苐·polarizing plate is attached; and cutting off a mechanism that corresponds to a portion of the elongated second polarizing plate Cell length are cut by the element, the checking mechanism based on the second polarizing section after attaching means, optically sequentially conveyed inspection of the liquid crystal display panel of the mechanism. 10. The manufacturing apparatus of the liquid crystal display device of claim 8 or claim 9, wherein the first polarizing plate attaching mechanism has the first polarizing plate and the liquid crystal cell at least one of the other parts. a first pressing member on the first polarizing plate side and a second pressing member on the liquid crystal cell side held in an overlapping state, and configured to have the first polarizing plate and the liquid crystal cell facing the first pressing member and the second The pressing member is relatively moved to attach the first polarizing plate to the first substrate. 11. The apparatus for manufacturing a liquid crystal display device according to any one of claims 8 to 10, wherein the second polarizing plate attaching mechanism has a liquid crystal cell to which the first polarizing plate is attached and The second polarizing plate is a third pressing member on the second polarizing plate side held by at least one of the overlapping portions, and a fourth pressing member attached to the first polarizing plate side of the liquid crystal cell, and The liquid crystal cell in which the first polarizing plate is laminated and the second polarizing plate are relatively moved to the third pressing member and the fourth pressing member to attach the second polarizing plate to the second substrate.