JP3763696B2 - Film substrate manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a manufacturing method of the film substrate, and more particularly, draining process is the next step in the film cleaning process in the film substrate, i.e., draining device for removing water droplets adhering to the film on the substrate after film washing The structure of a part and the conveyance method of the film substrate in the drainer part.
[0002]
[Prior art]
Liquid crystal panel (PF-LCD) manufacturing processes using flexible printed circuit boards (FPC) and film substrates are used to reliably remove dirt such as oil and fat adhering to the substrates and fine dust in each manufacturing process. A cleaning process is indispensable. In order to efficiently perform drying after cleaning and to prevent the occurrence of a water mark due to remaining cleaning liquid, the cleaning liquid adhering to the front and back surfaces of the substrate is removed in advance before drying. A liquid draining process is necessary.
[0003]
As described above, in the production of the film substrate, and requires draining step (= draining step), conventionally, it is performed with the draining by an air knife, attached by an air knife to fill arm board when the removal of water droplets, air - water droplets adhere to the balloon unit surface due to condensation, the water droplets fall onto the fill arm board, baking (drying) calcining in step (drying) have been filled beam board There was a stain on the surface. In addition, in order to manufacture the outer wall of the blowing unit and the draining device part inexpensively and lightly, the material is made of resin, and therefore the outer wall of the blowing unit and the draining unit part is deformed by the heat from the baking (drying) unit part. There was a problem such as.
[0005]
FIG. 4 is a cross-sectional configuration diagram for explaining an example of a liquid crystal display device, in which 1 is a liquid crystal, 2 is a spacer, 3 is a transparent electrode, 4 is an alignment film, 5 is a seal, 6 is a film substrate, 7 Is a polarizing plate. As shown in the figure, a liquid crystal display device requires a lead-out electrode for driving the liquid crystal display device, and therefore a portion where the substrates do not face each other is necessary. In a liquid crystal display device using a film substrate, since the substrate thickness is very thin and flexible, unlike the case of using a glass substrate, only one substrate is stacked after the substrates are stacked. It is very difficult to cut the electrode and form the extraction electrode part. Therefore, it is common to make a rectangular hole (shown by 10A in FIGS. 2 and 3) in advance with a punching die or the like on the opposite side of the film substrate corresponding to the lead electrode portion, A plurality of holes according to the number of impositions are provided.
[0006]
FIG. 5 is a front configuration diagram of a liquid draining process apparatus section in a manufacturing apparatus for manufacturing a liquid crystal display device as described above, FIG. 6 is a side view, FIG. 7 is a side view of a liquid crystal substrate transport wheel section, and FIG. a diagram showing a defect of the time, in the drawing, the flexible single wafer fill arm board 10, 11 (11a, 11b) is balloon units (air knife), 12 conveying wheel, 13 (13a, 13b) Is a water absorption roller, 14 is a drive gear, 15 (15a, 15b) is a pinch roller, 16 (16a, 16b) is a saddle roller, and the flexible film substrate 10 is driven to rotate in one direction by the drive gear 14. And is transported to a liquid draining section constituted by an air knife 11 (11a, 11b) and a water absorption roller 13 (13a, 13b). In the liquid draining portion, the cleaning liquid adhering to the upper surface side of the flexible film substrate 10 is removed by the air jet pressure ejected from the air knife 11, and the cleaning liquid adhering to the lower surface side is removed from the air knife. The flexible film substrate 10 is uniformly pressed by the air jet pressure of the air knife 11 and brought into contact with the water absorption roller 13 formed of a foam material such as PVA or PVC disposed opposite to the water absorption removal. To do.
[0007]
In cleaning and liquid cutting of a flexible film substrate having a plurality of rectangular holes as described above, liquid residue tends to occur on the substrate surface in the vicinity of the hole, particularly on the rear side with respect to the traveling direction during cleaning. There was a problem. This is because in the flexible film substrate, since the rigidity of the substrate is low, when the air of the air knife hits the hole portion of the substrate, liquid drainage becomes insufficient due to the flickering of the substrate.
[0008]
Further, when the hole of the substrate is close to the substrate end face, the fluttering due to the air of the air knife is remarkable, and as shown in FIG. 8, the top 10 'of the substrate 10 is jammed by the air knife or the water absorption roller. Abnormal conveyance such as meandering may occur. Actually, in order to effectively use the area of the substrate, the precut hole is brought close to the edge of the substrate end. In addition, when two or more air knives are arranged in order to ensure liquid drainage, the conveyance speed is slightly reduced by the air knives, so that a slack 10 "is generated at the rear due to the difference in the conveyance speed at the rear. However, there was a case of abnormal conveyance.
[0010]
[Problems to be solved by the invention]
According to the first to third aspects of the present invention, a single sheet of flexible film substrate having a plurality of rectangular holes formed therein is continuously conveyed in a predetermined direction and washed, and then applied to the front and back surfaces of the film substrate. Provided is a transport method capable of stably transporting a film substrate while ensuring sufficient liquid drainability in a liquid draining process for removing the attached cleaning liquid, preventing occurrence of abnormal transport such as jamming and meandering. It was made for the purpose.
[0014]
[Means for Solving the Problems]
The invention according to claim 1, comprising continuously and the drying device section dewatering device section, water droplets adhering to the fill arm board a water-washed filled beam board through the draining device unit and a drying device section removed, a manufacturing method of the film substrate to be dried, the fill arm board in advance a plurality of rectangular substrate sheet with a hole drilled in the substrate is the dewatering device portion of該枚leaves In the drainer unit, the cleaning liquid adhering to the upper surface side of the substrate is removed by an air knife and the cleaning liquid adhering to the lower surface side is removed from the air in the drainer unit. in the production method of the film substrate is removed by water absorption rollers so as to face the knife is arranged, the board of the sheet, and so that the conveying direction is parallel the longitudinal direction of the hole drilled in the substrate It is characterized by being conveyed to In addition, by transporting the substrate holes in the arrangement in which the longitudinal direction and the traveling direction are parallel, the film substrate flickers are reduced, and conveyance abnormalities such as jamming and meandering are prevented. It is possible to run out of liquid.
[0015]
The invention according to claim 2, comprising in succession a drying device section dewatering device section, water droplets adhering to the fill arm board a water-washed filled beam board through the draining device unit and a drying device section removed, a manufacturing method of the film substrate to be dried, the fill arm board in advance a plurality of rectangular substrate sheet with a hole drilled in the substrate is the dewatering device portion of該枚leaves In the drainer unit, the cleaning liquid adhering to the upper surface side of the substrate is removed by an air knife and the cleaning liquid adhering to the lower surface side is removed from the air in the drainer unit. In the method of manufacturing a film substrate , which is removed by a water absorption roller disposed opposite to the knife, the sheet substrate is a direction in which the longitudinal direction of the hole formed in the substrate is orthogonal to the conveyance direction of the substrate In the case where Characterized in that the distance from the end surface of the plate until the holes are transported to the head the longer substrate edge, and with, when the longitudinal direction of the pre-cut holes in the film substrate is perpendicular to the traveling direction, the end face of the substrate The substrate end surface having the longer distance from the pre-cut hole is transported starting from the top, and there is little fluttering at the top of the substrate, so that it is possible to prevent transport abnormalities such as jamming and meandering.
[0016]
According to a third aspect of the present invention, in the first or second aspect of the invention, the air knife has at least two of a front air knife and a rear air knife, and the air pressure of the front air knife is stronger than the air pressure of the rear air knife. Therefore, the air pressure of the front air knife and the air pressure of the rear air knife can be adjusted independently of each other, and the air pressure of the front air knife is always higher than the air pressure of the rear air knife, As a result, the speed reduction of the transport speed by the rear air knife is less than the speed reduction of the transport speed by the front air knife, the transport speed is increased toward the head in the traveling direction, and the film substrate is bent and wrinkled between the air knives. Thus, stable conveyance can be realized.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a configuration diagram of a main part of an apparatus for manufacturing a liquid crystal display device to which a method for manufacturing a film substrate according to the present invention is applied . In the figure, I is a cleaning unit, II is a liquid (water) draining unit, and III is In the drying device unit, the liquid crystal display device 10 is transported to the cleaning device unit I by the transport wheel 12, and is washed with cleaning water (liquid) sprayed from the spray 21 in the cleaning device unit I, and then the liquid draining device. The droplets on the liquid crystal display device 10 are removed by the dry air ejected from the air blowing units (air knives) 11a and 11b in the liquid draining device portion II and then sent to the drying device portion III. It is supposed to be.
[0018]
As described above, in the manufacturing process of the liquid crystal display device 10, conventionally, when water droplets attached to the liquid crystal display substrate are removed with an air knife, water droplets due to condensation adhere to the surface of the air blowing unit. When the water droplets fell on the liquid crystal display substrate and were dried by the drying device section, spots were generated on the liquid crystal display substrate. In addition, these materials are made of resin in order to manufacture the outer wall of the blowing unit and the draining device part cheaply and lightly, so that the outer wall of the blowing unit and the draining unit part is deformed by the heat from the drying device part. There was a problem such as.
[0019]
In the example shown in FIG. 1, in order to solve the above-described problem, the condensation of the blowing units 11a and 11b and the heat from the drying device part III are prevented from flowing into the draining device part II, and production with stable quality is achieved. and for enabling survival of device life, Phil arm board 10 that is washing treatment by spraying 21 in the cleaning device unit I is conveyed to the draining device portion II by the drive of the conveyor wheel 12. The outer wall of the drainer unit II and the dry air blowing units 11a and 11b are made of resin. Draining device unit II, balloon dry air unit 11a, the knife-like air blown from 11b to remove water droplets adhering to fill arm board. Dry air is blown onto the blowing unit 11b from the air nozzle 22 installed on the drying device section III side to the side surface of the blowing unit on the drying device side (arrow A). In addition to the blowing unit 11b, the air nozzle 22 blows air in the vertical direction between the draining device part II and the drying device part III to form a curtain with air (arrow B).
[0020]
Phil arm board 10 that is drained by the construction and operation are dried in the drying apparatus unit III is conveyed to the next step. Due to the structure in which dry air is blown to the outside of the blowing unit, it is possible to suppress the occurrence of condensation on the surface of the blowing unit. In addition, it is possible to efficiently suppress the occurrence of condensation on the surface of the blowing unit by blowing dry air on the side surface of the blowing unit close to the drying unit. Furthermore, by providing an air curtain with dry air between the drying unit and the draining unit, it is possible to prevent deformation of the resin unit (blowout unit, draining unit outer wall, etc.) used in the draining unit. Can do.
[0021]
Figure 2 is a diagram for explaining the embodiments of the present invention (plan view showing the traveling direction of the fill arm board passing through the draining device), as described in FIGS. 5 to 7, the sheet The flexible film substrate 10 is rotated in one direction by a driving gear 14 from a driving device such as an electric motor (not shown) so that the flexible film substrate 10 is sequentially moved to the liquid draining device II by the conveying wheel 12. Be transported. The liquid draining device II includes air-knives 11a and 11b for ejecting an air flow for removing the cleaning liquid adhering to the upper surface side of the flexible film substrate 10, and the cleaning liquid adhering to the lower surface side. In order to remove them, a pair of water absorption rollers 13a and 13b formed of a foam material such as PVA or PVC are arranged opposite to each other. Figure 2 is a plan view illustrating the traveling direction of the fill arm board 10 according to the present invention, as shown, the longitudinal direction of the pre-cut hole portion 10A of the film substrate 10 is parallel to the traveling direction. Thus, by longitudinal to the traveling direction of the holes of the film substrate is transported in an arrangement comprising a parallel, it can reduce the flapping of fill arm board, to prevent jams, abnormal transport of meandering, a film substrate hole 10A It is possible to perform sufficient liquid drainage on both surfaces of the film substrate 10 even near.
[0022]
FIG. 3 is a view for explaining another embodiment of the present invention (a plan view showing the traveling direction of the film substrate 10 passing through the liquid draining device). FIG. 3 shows a liquid crystal display device in which the extraction electrodes are on the upper and lower substrates. In this case, it is necessary to provide precut holes whose longitudinal directions are orthogonal to each other on the upper and lower substrates. In addition, when it is desired to increase the number of impositions in the substrate, the longitudinal direction of the precut hole and the traveling direction of the substrate may have to be orthogonal. The shape of the film substrate is generally rectangular, and there are cases where it is difficult to convey the substrate by rotating the traveling direction of the substrate by 90 degrees due to restrictions on the width of the conveyance system. In such a case, the traveling direction of the substrate is defined as shown in FIG. That is, when the longitudinal direction of the precut hole 10A of the substrate is orthogonal to the traveling direction, the substrate is transported with the substrate end surface having the longer distance from the substrate end surface to the precut hole as the head. As for the distance to the substrate end face, a distance corresponding to at least the effective display of one panel is always secured.
[0023]
In full Irumu substrate manufacturing method shown in FIGS. 5 to 7, wherein the air knife is at least, arranged two or more of the preceding air knife 11a and the rear air knife 11b, front air - knife 11a and front water B - La 13a, and a rear-stage liquid drainage section composed of a rear-stage air-knife 11b and a rear-stage water absorption roller 13b. The air-pressure of each air knife 11a, 11b The pipes are arranged independently so that they can be adjusted independently of each other so that the air pressure of the front air knife 11a is always higher than the air pressure of the rear air knife 11b. In this case, since the transport speed of the rear air knife is less than the transport speed of the front air knife, the transport speed is higher at the head in the traveling direction, and the deflection of the film substrate between the air knives, Stable conveyance can be realized without generating wrinkles.
[0027]
【The invention's effect】
The invention according to claim 1, comprising continuously and the drying device section dewatering device section, water droplets adhering to the fill arm board a water-washed filled beam board through the draining device unit and a drying device section removed, a manufacturing method of the film substrate to be dried, the fill arm board in advance a plurality of rectangular substrate sheet with a hole drilled in the substrate is the dewatering device portion of該枚leaves In the drainer unit, the cleaning liquid adhering to the upper surface side of the substrate is removed by an air knife and the cleaning liquid adhering to the lower surface side is removed from the air in the drainer unit. in the production method of the film substrate is removed by water absorption rollers so as to face the knife is arranged, the board of the sheet, and so that the conveying direction is parallel the longitudinal direction of the hole drilled in the substrate So that Possible to reduce the flapping of Lum substrate, jam, transport failure to prevent the meandering, it is possible to perform sufficient liquid out of both surfaces of the substrate even near the substrate hole.
[0028]
The invention according to claim 2, comprising in succession a drying device section dewatering device section, water droplets adhering to the fill arm board a water-washed filled beam board through the draining device unit and a drying device section removed, a manufacturing method of the film substrate to be dried, the fill arm board in advance a plurality of rectangular substrate sheet with a hole drilled in the substrate is the dewatering device portion of該枚leaves In the drainer unit, the cleaning liquid adhering to the upper surface side of the substrate is removed by an air knife and the cleaning liquid adhering to the lower surface side is removed from the air in the drainer unit. In the method of manufacturing a film substrate , which is removed by a water absorption roller disposed opposite to the knife, the sheet substrate is a direction in which the longitudinal direction of the hole formed in the substrate is orthogonal to the conveyance direction of the substrate In the case where And from the end face of the plate so as to convey in the top substrate end face of the distance longer to said bore, less the head of fluttering of the substrate, jam, it is possible to prevent abnormal transport of meandering, moreover, the substrate end face Since the distance corresponding to the effective display of at least one panel is always secured, the traveling direction can be easily selected.
[0029]
The invention of claim 3 is the invention of claim 1 or 2 , wherein the air knife has at least two of the front air knife and the rear air knife, and is composed of a front air knife and a front water absorption roller. It is composed of at least two stages of a front-stage liquid drainage section, a rear-stage liquid drainage section composed of a rear-stage air-knife and a rear-stage water absorption roller, and piping is provided so that the air pressure of each air knife can be adjusted independently of each other. Since the air pressure of the front-stage air knife is always higher than the air pressure of the rear-stage air knife, the transport speed of the rear-stage air knife is less than that of the front-stage air knife. The transfer speed is higher at the head of the direction, and stable transfer can be realized without causing the substrate to bend and wrinkle between air knives.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a cleaning unit, a liquid draining unit, and a drying unit in a liquid crystal display manufacturing apparatus to which the present invention is applied.
FIG. 2 is a plan view showing a traveling direction of a film substrate that passes through a liquid draining device according to the present invention.
FIG. 3 is a plan view showing the traveling direction of the film substrate passing through the liquid draining device according to the present invention.
FIG. 4 is a cross-sectional configuration diagram of a liquid crystal display device.
5 is a front view of a drainer device unit to which the present invention that apply.
6 is a side view of a drainer device unit to which the present invention that apply.
7 is a side view of a full Irumu substrate conveyor wheel unit to which the present invention that apply.
FIG. 8 is a front view for explaining a problem during conveyance of a film liquid crystal substrate by a conventional method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display device, 10A ... Pre-cut hole, 11 (11a, 11b) ... Blow unit (air knife), 12 ... Conveying wheel, 13 (13a, 13b) ... Water absorption roller, 14 ... Drive gear, 15 (15a, 15b) ) ... Pinch roller, 16 (16a, 16b) ... Wheel roller, 21 ... Spray nozzle, 22 ... Dry air blowing nozzle.

Claims (3)

Has a draining device unit and the drying device portion successively, attached to the fill arm board water drop was removed and the water-washed filled beam board through the draining device unit and a drying device section, drying the film substrate a method of manufacturing, the fill arm board in advance a plurality of rectangular substrate sheet with a hole drilled in the substrate of該枚leaves towards the draining device portion to the drying apparatus section In the drainer unit, the cleaning liquid adhering to the upper surface side of the substrate is removed by an air knife, and the cleaning liquid adhering to the lower surface side is disposed facing the air knife. in the production method of the film substrate is removed by water rollers being, and characterized in that the base plate of the sheet, and the longitudinal direction to the transporting direction of the hole drilled in the substrate carrying in parallel production side of the film substrate to . Has a draining device unit and the drying device portion successively, attached to the fill arm board water drop was removed and the water-washed filled beam board through the draining device unit and a drying device section, drying the film substrate a method of manufacturing, the fill arm board in advance a plurality of rectangular substrate sheet with a hole drilled in the substrate of該枚leaves towards the draining device portion to the drying apparatus section In the drainer unit, the cleaning liquid adhering to the upper surface side of the substrate is removed by an air knife while the cleaning liquid adhering to the lower surface side is opposed to the air knife. In the method of manufacturing a film substrate to be removed by a water absorption roller provided, the substrate is a substrate in the case where the longitudinal direction of the hole formed in the substrate is perpendicular to the transport direction of the substrate. From the end face of the Film manufacturing method of a substrate, wherein the distance to the transports to the head the longer substrate edge face of. The air knife is at least, has more than two front air knife and the rear air knife, air pressure of the front air knife of the film substrate according to claim 1 or 2, characterized in that stronger than the air pressure of the subsequent stage air knife Production method.

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