JP2895337B2 - Liquid crystal display panel manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a liquid crystal display panel, and more particularly to a method for manufacturing a liquid crystal display panel using a flexible plastic film having a transparent conductive film formed on a surface as a substrate. Things.

[0002]

2. Description of the Related Art A conventional liquid crystal display panel uses glass for a substrate. The general manufacturing process of a liquid crystal display panel is as follows: conductive film treatment, pattern formation by photoetching or printing method, coating of alignment treatment film, rubbing, seal printing, pressure bonding of upper and lower substrates, sealing of liquid crystal, Manufactured through processes such as sealing and mounting of polarizing plates,
Since the process is very long, the processing cost accounts for a very large proportion of the total cost of the liquid crystal display panel.

[0003] In order to reduce the processing cost,
Although the glass substrate, which is the starting point of the processing, had a one-to-one correspondence with the liquid crystal display panel of the finished product, a method of making a plurality of liquid crystal display panels from the glass substrate, which is the starting point, was devised. Significant cost reductions have been achieved.

However, when glass is used as a substrate material, the size of the starting glass substrate is limited due to its physical properties, and the cost is naturally limited.

[0005] In order to overcome such a limit of cost reduction and to realize a further significant cost reduction, Japanese Patent Publication No. 61-61083 discloses a method for forming a long surface on a substrate of a liquid crystal display panel. A method for manufacturing a liquid crystal display panel using a flexible plastic film having a transparent conductive film formed thereon is disclosed.

According to the method, first, guide holes are provided on both sides of a long flexible plastic film, and then a plurality of transparent electrodes are continuously formed on the surface of the plastic film, and the alignment treatment is continuously performed. Apply. And
The two long plastic films thus processed are coated with a sealant for each liquid crystal display panel, and the guide holes are aligned and the upper and lower parts are sequentially bonded to form a liquid crystal display panel film. Next, liquid crystal is continuously injected into the liquid crystal display panel film for each liquid crystal display panel, and the injection port is continuously closed with an encapsulant. Then, a long polarizing plate film is continuously adhered to both sides of the liquid crystal display panel film, and then sequentially cut to produce a plurality of liquid crystal display panels.

[0007]

However, in the method disclosed in the above-mentioned publication, a significant cost reduction cannot be achieved as desired because of the following reasons.
There is a problem that it is difficult to obtain a high quality liquid crystal display panel.

That is, according to the conventional method, the guide holes are provided on both sides of the plastic film, and the subsequent steps are processed using the guide holes as all references. However, drilling of a plastic film is usually performed by punching, and burrs and burrs are likely to occur around the hole due to the worn state of the cutting edge of the punching and punching apparatus. For this reason, the shape of the guide hole is distorted due to the generated burrs and burrs, and when the guide pin is inserted into the guide hole and aligned, the position is easily shifted. Such burrs and burrs are likely to recur immediately after replacing the cutting edge of the punching and punching apparatus, and there is no effective prevention method.

Further, even if the guide pin is inserted into the guide hole formed in a good shape without burrs and burrs, when the guide pin is inserted and comes into contact with the side wall of the guide pin, the plastic film loses the rigid guide pin and loses the guide hole. Is distorted, and the displacement is apt to occur. Similarly, if the guide hole is not stopped just above the guide pin, the guide hole will be distorted at the moment of insertion, resulting in a similar result. Since these phenomena can occur with only one use, the same guide hole is never used again.

As described above, in the method using the guide hole as a reference, misalignment is likely to occur, so that high-precision positioning cannot be performed. As a result, the defective rate is increased and the cost is increased, so that it is not possible to reduce costs as much as expected, and it is difficult to obtain a high-quality liquid crystal display panel that requires fine positioning.

Further, when the guide holes are distorted, the apparent thickness of the plastic film is increased, which affects the conveyance accuracy, and the plastic film meanders during the conveyance, thereby causing a high defect rate. This is affecting cost reduction.

According to the conventional method, two long plastic films are laminated to form a liquid crystal display panel film. However, the long plastic films are not heat-treated until they are laminated. Due to shrinkage, the pattern dimensions are more likely to be shifted than the initial design dimensions. Therefore, when long plastic films are adhered to each other, the upper and lower patterns of the individual liquid crystal display panels will be displaced, resulting in poor display when completed as a liquid crystal display panel and heat due to the pitch deviation of the terminals. It is easy to cause poor connection of the seal. As a result, as in the case of the above, the defect rate is increased, so that it is not possible to reduce costs as much as expected, and it is difficult to obtain a high-quality liquid crystal display panel that requires fine positioning.

According to the conventional method, a liquid crystal display panel film is formed by laminating two long plastic films, and a polarizing plate is bonded to both surfaces of the liquid crystal display panel film. In the state of the liquid crystal display panel film, the electrodes are not exposed. For this reason, in this long state, the lighting inspection, the optical inspection, and the quality inspection such as the presence or absence of a flaw in the display area cannot be performed, and the inspection is performed after cutting individually. Therefore, an inspection by an operator is required for each liquid crystal display panel, and the inspection time naturally increases, which leads to an increase in cost and prevents a significant cost reduction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a large cost reduction effect can be efficiently obtained by using a long plastic film, and a high quality liquid crystal display panel can be obtained. It is an object of the invention to propose a method of manufacturing a liquid crystal display panel capable of manufacturing a liquid crystal display panel.

[0015]

According to a first aspect of the present invention, there is provided a method for manufacturing a liquid crystal display panel, wherein a flexible and long plastic film is used as a substrate material. After a transparent electrode is continuously formed on the liquid crystal panel, a sealant is applied for each liquid crystal panel, and two plastic films are laminated to form a liquid crystal display panel film. after injection of sequentially cut into in the method of manufacturing a liquid crystal display panel to form a plurality of liquid crystal display panel, in front of the putter training of the transparent electrodes, the positioning marker is provided on at least one of the film edges of the plastic film , the transparent electrode patterning simultaneously, various criteria for use in the positioning of the subsequent step Form the turn of the same material as the transparent electrode
In the subsequent steps, the positioning marker
After performing the first positioning using the reference pattern,
To perform the second positioning with higher accuracy than the first positioning
Cormorant is characterized in that.

According to a second aspect of the present invention, there is provided a method for manufacturing a liquid crystal display panel, wherein a flexible and long plastic film is used as a substrate material, and a transparent electrode is continuously formed on the plastic film. The transparent electrode is patterned into a pattern with terminals.
After grayed and bonding two plastic films a sealing agent is coated with the liquid crystal panel units to form a liquid crystal display panel film and then, both sides of the liquid crystal display panel Film
After performing a step of forming a polarizing layer and a step of injecting liquid crystal into liquid crystal display panel units in a liquid crystal display panel film,
In a method for manufacturing a liquid crystal display panel in which a plurality of liquid crystal display panels are formed by cutting sequentially, when two plastic films are bonded to each other, one long plastic film is cut into liquid crystal display panel units in advance, and individually plastic film, separated, bonded to the plastic film of the other elongated, the
Display the polarizing layer on the liquid crystal display so that the terminals of the transparent electrode are exposed.
Formed only in the display area of the panel film,
After injecting the liquid crystal into the
Before cutting the film, use the exposed transparent electrode terminals.
It is characterized by performing quality inspection .

[0017]

[0018]

SUMMARY OF] According to the method of the first aspect, the positioning marker to the film edges of the plastic film is provided in front of the pattern <br/> over training of the transparent electrodes, patterning of the transparent electrode at the same time, the subsequent steps Various reference patterns to be used for positioning are formed . Soy sauce
For example, a plastic film long, when forming a plurality of liquid crystal display panel, when exposing the pattern of the transparent electrode a plastic film, a positioning marker that has been formed into a film edge portion of the plastic film landmarks Then, the transport of the plastic film is stopped, and then, by using the positioning marker and the film edge as a mark, the exposure pattern and the plastic film are parallelized to perform positioning.
In the subsequent steps, using the positioning marker, the transport of the plastic film is stopped, the approximate positioning is performed, and then, by using a predetermined reference pattern formed at the time of patterning the transparent electrode, High-precision positioning can be performed. As a result, the liquid crystal display panel can be formed with accurate positioning, so that the defective rate is reduced, and the significant cost reduction effect obtained by manufacturing using a long plastic film can be efficiently obtained. In addition to this, it is also possible to manufacture a high-quality liquid crystal display panel that requires fine positioning.

According to the second aspect of the present invention , when two plastic films are bonded together, one long plastic film is cut into liquid crystal display panel units, and this is cut into a long plastic film. Since the bonding is performed, the deviation of the pattern dimension generated in the previous process is absorbed, and the upper and lower patterns of the liquid crystal display panel can be made to correspond with high accuracy. Therefore,
The occurrence of display defects due to pattern shifts and poor connection of the heat seal due to pitch shifts of the terminal portions, etc. is suppressed, and as in the above-described claim 1, the defect rate is reduced, and by using a long plastic film, The significant cost reduction effect obtained can be obtained efficiently,
It is also possible to manufacture a high-quality liquid crystal display panel that requires fine positioning.

Further, according to the method of the second aspect , the plastic film cut in units of a liquid crystal display panel is bonded to one long plastic film, and the terminals of the transparent electrodes are exposed. The polarizing layer is formed only in the display area above the display area.
Therefore, the terminals of the transparent electrode are exposed in the state of the long liquid crystal display panel film. Therefore, after injecting liquid crystal into the liquid crystal display panel film in liquid crystal display panel units, and before cutting the liquid crystal display panel film, using these exposed terminals, for example, lighting inspection, optical inspection, and scratching of the display area can be performed. Inspection of quality such as presence / absence can be performed on the line. As a result, the inspection time can be greatly reduced as compared with the conventional case where each of the individually separated liquid crystal display panels is inspected one by one.
A large cost reduction effect obtained by continuously manufacturing using a long plastic film can be efficiently obtained.

[0021]

1 to 21 show an embodiment of the present invention.
This will be described below.

The length 100 m, width of 350 mm, at least on one side of a plastic film 1a having a thickness of 100 microns, and SiO _X film, a Si-based coupling film 2 such as a SiN _X film is formed by sputtering deposition method ( (See FIG. 1). The purpose of forming the Si-based coupling film 2 is to improve the adhesion between the plastic film 1a and the ITO film (transparent electrode film) 3 to be processed in the next step. S
The plastic film 1b to which the i-type coupling film 2 has been added is wound around the reel 4 again. As the plastic film 1a used for the substrate, in addition to the polyester film, a relatively transparent and flexible plastic film such as a polycarbonate film, an acrylic film, and a cellulose triacetate film can be used.

Next, the ITO film 3 is applied to the surface of the plastic film 1b on which the Si-based coupling film 2 has been added by 900 to 30
Evaporate to a thickness of 00 ° (see FIG. 2). After vapor deposition of the ITO film 3 and before winding on the reel 4, hot stamping with carbon is performed on the film edge portion of the plastic film 1c to fuse the carbon and the plastic film 1c to form the positioning marker 7. . The position where the positioning marker 7 is formed is at the end of the exposure range 6,
Each is always at a fixed interval (see FIG. 3). Next, a resist 9 is continuously applied to the surface of the plastic film 1c to which the Si-based coupling film 2 and the ITO film 3 have been added, using a resist coater 8 using a roll coater method (see FIG. 4).

Next, the pattern of the segment mask 11 is exposed and transferred to the plastic film 1d which has been processed up to the previous step by using a non-contact exposure machine 10 which can be continuously processed (see FIG. 5). In the figure, 14 is a mercury lamp and 15 is a lens. Plastic film 1
The position of the transfer position when exposing and transferring the segment mask 11 to the d is determined by the positioning marker 7 hot-pressed on the film edge portion of the plastic film 1d.
And the optical sensors 12a and 1 provided in the exposure machine 10.
2b and 12c. More specifically, in the X-axis direction of the film longitudinal direction, when the optical sensor 12a provided at the front end side of the exposure area detects the positioning marker 7, the plastic film 1d is conveyed. On the other hand, the plastic film 1d and the segment mask 11 are positioned by stopping, and the Y-axis direction and the θ direction of the plastic film 1d and the segment mask 11 are aligned with the optical sensors 12b and 12c provided at portions corresponding to the film edges of the plastic film 1d. Positioning is performed by adjusting them to be parallel (see FIG. 6).

The segment mask 11 includes:
Various standards such as a cross register mark and a square frame shown in FIG. 7 used for alignment film processing, printing of a sealant, bonding of plastic films, printing of a polarizing layer, positioning when forming a TCP or a heat seal connector. The pattern 13 is included, so that in each of the subsequent steps,
Positioning can be performed using an optical sensor.

The segment mask 11 is manufactured in advance by measuring a dimensional change rate according to a process flowchart and anticipating the change rate. The same applies to a common mask used when forming a common pattern described later.

Next, the plastic film 1e which has been processed up to the previous step is passed through a developing solution 16 to continuously remove the resist 9 in a portion not exposed to light by the exposure in the previous step (see FIG. 8). Next, the plastic film 1f processed up to the previous process is baked at 100 to 150 ° C.
The resist 9 is baked continuously through the inside of the resist 7 (see FIG. 9). Next, 1 g of the plastic film processed up to the previous step is passed through an etching solution 18 of hydrobromic acid to continuously etch the ITO film 3 where the resist 9 is not applied (see FIG. 10). . In the figure, reference numeral 19 denotes a spray nozzle.

Next, the plastic film 1h, which has been processed up to the previous step, is passed through a resist stripper 20 to continuously strip the resist 9 (see FIG. 11). Next, the plastic film 1i that has been processed up to the previous step is passed through an alignment treatment liquid 21 and the alignment treatment liquid 21 is continuously applied to the entire surface of the film (see FIG. 12). Next, the plastic film 1j processed up to the previous step is continuously rubbed by being passed between rolls 22 covered with a surface plastic brush (see FIG. 13).

Next, the seal printing agent 23 is continuously applied to the seal portion of the plastic film 1k processed up to the previous step (see FIG. 14). The positioning of the printing position when printing the sealant is approximately performed by reading a positioning marker 7 provided at the film edge portion of the plastic film 1k with an optical sensor (not shown), and thereafter, the pattern is formed. By reading a predetermined reference pattern 13 provided inside the CCD camera 24 with a CCD camera 24, it is precisely formed.

Next, in a series of steps similar to the above, after exposing a pattern of a common mask (not shown) to form a common pattern, the long plastic film 100 that has been subjected to orientation processing and rubbing processing is removed. Then, the liquid crystal display panel is cut continuously using the cutting cutter 25 (see FIG. 15). Next, these individually separated common side plastic films 100a... Are positioned on the long segment side plastic film 1m on which the sealant is printed, and then continuously bonded (see FIG. 16). ). The positioning of the bonding position between the plastic film 1m and the plastic film 100a is performed by using the reference pattern 13 in the liquid crystal display panel unit.
Is read out by the CCD camera 24 with high accuracy.

Next, a common-side plastic film 100a... Is bonded to the segment-side plastic film 1m, and a liquid crystal display panel film 200 composed of a plurality of liquid crystal display panels has a segment-side and common-side film surface. Then, the polarizing layers 26a and 26b are applied (see FIG. 17). Polarizing layers 26a and 26
The formation of b is performed by applying an iodine-based solvent 27 to a roll coater 28. Roll coater 28 for applying polarizing layer 26b, and roll coater 2 for applying polarizing layer 26b
The rotation axes of the upper and lower roll coaters 28 can be adjusted in accordance with the required polarization angle. The rotational force of the roll, the shear stress applied to the squeegee 29 is an iodine-based Solvent 27 scratching the ink, resulting the same effect as the film was uniaxially stretched in iodine, so having an optical anisotropy effect (See FIG. 17).

Next, in the same manner as described above, the positioning marker 7 and C are placed in the cell gap of each liquid crystal display panel in the liquid crystal display panel film 200a processed up to the previous step.
The liquid crystal 30 is continuously injected while positioning using the CD camera 24 (see FIG. 18). In the figure, 31 is
It is a piston. Next, the injection port of the liquid crystal display panel film 200b into which the liquid crystal 30 has been injected is continuously closed with the sealing agent 32 while being positioned in the same manner as the injection of the liquid crystal 30 (see FIG. 19).

Next, the liquid crystal display panel film 200c processed up to the previous step is optically and electrically inspected by the automatic inspection machine 33 (see FIG. 20). Such an inspection is performed by bringing checker pins into contact with the terminal pattern of the ITO film 3 on the segment side exposed on the surface of the liquid crystal display panel film 200c. Finally, when the long liquid crystal display panel film 200c after the end of the inspection is cut continuously and sequentially, a plurality of liquid crystal display panels 200d.
Is completed (see FIG. 21). In the drawing, 35 is a cutting cutter.

As described above, in this embodiment, the IT
Before exposing the pattern on the O film 3, a positioning marker 7 is provided on the film edge portion of the plastic film 1 c, and at the same time as the patterning of the ITO film 3, various reference patterns 13 to be used for positioning in the subsequent steps.
In the subsequent steps, the transport of the plastic film is stopped using the positioning marker 7 at the film edge portion, the approximate positioning is performed, and then the predetermined reference pattern 13 is used. , Fine positioning. Therefore, the positioning accuracy is significantly improved as compared with the conventional positioning based on the guide hole. As a result, the defect rate is reduced, the cost can be reduced, and a high-quality liquid crystal display panel having a very small resolution and high resolution, such as a dot matrix type liquid crystal display panel, can be manufactured. Is also possible.

When the liquid crystal display panel film 200 is formed, the common-side long plastic film 100 on which the common pattern is formed is separated into liquid crystal display panel units, and the separated plastic films 100a are separated. , So that it is attached to the plastic film 1m on the long segment side,
The deviation of the pattern dimension between the upper and lower portions is absorbed, and the upper and lower patterns can be made to correspond with high accuracy. Therefore, a display defect due to a pattern deviation, a connection failure of a heat seal due to a terminal pitch deviation, and the like are unlikely to occur, which also reduces a defect rate, enables cost reduction, and enables a high quality liquid crystal display panel. Manufacturing becomes possible.

Further, the plastic film 1 on the common side
00 is cut in units of a liquid crystal display panel and then adhered, and the polarizing layers 26a and 26b are formed only in the display area of the liquid crystal display panel film. The terminal pattern is exposed,
By bringing a checker pin into contact with this terminal pattern, it is possible to perform an optical inspection, a lighting inspection, and a quality inspection such as the presence or absence of a flaw in the display area on the line. This allows
In addition to shortening the time required for the inspection, high-quality inspection can be performed at low cost.

The one formed by the conventional method is
Although the polarizing layer had a thickness of about 0.2 mm, in the present embodiment, since the thickness is 5 to 30 μm because the printing method is used, the flexibility of the plastic film is almost zero. It is not spoiled. Therefore, the present invention can also be applied to the manufacture of a curved display of a liquid crystal display panel, which is expected to greatly expand in the future.

In the above embodiment, the positioning marker 7 is formed by a carbon hot stamping method. However, the present invention is not limited to this. For example, a printing method or a nozzle jet method may be used. But it is possible.

The polarizing layers 26a and 26b can be formed by an electrodeposition method other than the printing method described above. In this embodiment, since the printing method is employed, the polarizing layers 26a and 26b are formed before the liquid crystal 30 is injected in order to prevent the liquid crystal 30 from deteriorating when the organic solvent is evaporated by heating. However, this does not apply to the electrodeposition method.

[0040]

According to the method for manufacturing a liquid crystal display panel according to the first aspect of the present invention, as described above, the transparent electrode is patterned.
Prior to the positioning marker in at least one film edge portions of the plastic film provided on the transparent electrode patterning simultaneously, the same material as the transparent electrode of various reference patterns for use in locating the subsequent step
In the subsequent steps, the positioning marker
After performing the first positioning using a force,
Second positioning with higher accuracy than the first positioning using the
Is performed .

Thus, the liquid crystal table can be accurately positioned.
Since the display panel can be formed, the defective rate is reduced, and the significant cost reduction effect obtained by continuously manufacturing using a long plastic film can be efficiently obtained, and fine positioning can be achieved. Is required,
For example, there is an effect that a high-quality liquid crystal display panel having a very small resolution and high resolution, such as a dot matrix type liquid crystal display panel, can be manufactured.

In the method of manufacturing a liquid crystal display panel according to the second aspect, as described above, when two plastic films are bonded together, one of the long plastic films is cut into liquid crystal display panel units in advance. Place a plastic film that is isolated to these individual, bonded to the plastic film of the other elongated, the polarized
The light layer is placed on the liquid crystal display panel so that the terminals of the transparent electrode are exposed.
LCD panel, formed only in the display area of the panel film
After injecting liquid crystal into the film, and
Use the exposed transparent electrode terminals before cutting
The quality is checked .

As a result, the deviation of the pattern dimension generated in the previous process is absorbed, and the upper and lower patterns of the liquid crystal display panel can be made to correspond with high precision. Therefore, the occurrence of display defects due to pattern shifts and poor connection of the heat seal due to pitch shifts of the terminal portions, etc., is suppressed, and the significant cost reduction effect obtained by continuously manufacturing using a long plastic film is reduced. The same effect as that of the first aspect can be obtained in that the liquid crystal display panel can be efficiently obtained and a high-quality liquid crystal display panel requiring fine positioning can be manufactured. In addition, individual
Inspection of the LCD panels separated one by one
Inspection time is greatly reduced compared to
Cost reduction is possible, so further cost reduction
Make it possible.

[0044]

[0045]

[Brief description of the drawings]

FIG. 1, showing an embodiment of the present invention, is a cross-sectional view showing how a long plastic film on which a Si-based coupling film is formed is wound around a reel.

FIG. 2 is a cross-sectional view of an apparatus for continuously depositing an ITO film on a plastic film.

FIG. 3 is a plan view of the plastic film in which positioning markers are formed on a film edge portion.

FIG. 4 is a sectional view of an apparatus for continuously applying a resist to a plastic film.

FIG. 5 is a sectional view of an apparatus for continuously exposing the plastic film coated with a resist.

FIG. 6 is an explanatory diagram for explaining a method of aligning an exposure mask and a plastic film in the exposure apparatus.

FIG. 7 is an explanatory view showing a shape of a reference pattern exposed on a plastic film by the exposure apparatus.

FIG. 8 is a sectional view of an apparatus for continuously developing a plastic film coated with an exposed resist.

FIG. 9 is a cross-sectional view of an apparatus for continuously baking a resist partially applied to a plastic film.

FIG. 10 is a sectional view of an apparatus for partially and continuously etching an ITO film coated on a plastic film.

FIG. 11 is a cross-sectional view of an apparatus for continuously stripping a resist partially coated on the surface of a plastic film.

FIG. 12 is a sectional view of an apparatus for continuously applying an alignment treatment agent to a plastic film.

FIG. 13 is a cross-sectional view of an apparatus for continuously rubbing an alignment treatment agent applied to a plastic film.

FIG. 14 is a cross-sectional view of a printing apparatus that applies a sealant partially and continuously to a plastic film.

FIG. 15 is a sectional view of an apparatus for continuously cutting a plastic film.

FIG. 16 is a plan view of a liquid crystal display panel film obtained by laminating individually separated plastic films on one long plastic film.

FIG. 17 is a cross-sectional view of an apparatus that partially and continuously forms a polarizing layer on both surfaces of a liquid crystal display panel film.

FIG. 18 is a sectional view of an apparatus for continuously injecting liquid crystal into a liquid crystal display panel film.

FIG. 19 is a sectional view of an apparatus for continuously sealing an encapsulant in a liquid crystal display panel.

FIG. 20 is a sectional view of an apparatus for optically inspecting each liquid crystal display panel of the liquid crystal display panel film.

FIG. 21 is a sectional view of an apparatus for continuously dividing a liquid crystal display panel film.

[Description of Signs] 1a to 1m Plastic film 2 Si-based coupling film 3 ITO film (transparent electrode) 4 Reel 7 Positioning marker 12a to 12c Optical sensor 13 Reference pattern 24 CCD camera 26 Polarizing layer 100 / 100a Plastic film 200 to 200c liquid crystal display panel film 200d liquid crystal display panel

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G02F 1/13 101 G02F 1/1333 500

Claims (2)

(57) [Claims] 1. A flexible and long plastic film is used as a substrate material, a transparent electrode is continuously formed on the plastic film , and the transparent electrode is patterned.
After grayed and bonding two plastic films a sealing agent is coated with the liquid crystal panel units to form a liquid crystal display panel film, after injecting liquid crystal into the liquid crystal display panel unit to the liquid crystal display panel film, successively cutting the manufacturing method of the liquid crystal display panel to form a plurality of liquid crystal display panel and, in front of the transparent electrode pattern training, the positioning marker is provided on at least one film edge portions of the plastic film, the transparent electrode patterning simultaneously In addition, various reference patterns to be used for positioning in the subsequent steps are the same as those for the transparent electrodes.
Formed in the same material, and in the subsequent steps,
After performing the first positioning, using the above reference pattern
A method for manufacturing a liquid crystal display panel, wherein the second positioning is performed with higher precision than the first positioning . 2. A flexible and long plastic film is used as a substrate material, a transparent electrode is continuously formed on the plastic film , and the transparent electrode has terminals.
That after patterning the pattern, and bonding two plastic films a sealing agent is coated with the liquid crystal panel units to form a liquid crystal display panel film and then, liquid crystal display
After forming a polarizing layer on both sides of the display panel film and injecting liquid crystal into the liquid crystal display panel film in units of liquid crystal display panels, the liquid crystal display panel is formed by sequentially cutting to form a plurality of liquid crystal display panels. In the manufacturing method, when two plastic films are bonded together, one long plastic film is cut into liquid crystal display panel units in advance, and these individually cut plastic films are separated into another long plastic film. bonded to the plastic film, the polarizing layer, so that the terminal of the transparent electrode is exposed, the liquid crystal
Formed only in the display area of the display panel film, after the liquid crystal is injected into the liquid crystal display panel film, and
Before cutting the display panel film, expose the edge of the transparent electrode
A method for manufacturing a liquid crystal display panel, wherein quality inspection is performed using a chip .