JP2008191432A - Method and device for manufacturing liquid crystal panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To disclose a method for cutting a glass substrate, on which a polarizer film is pasted, to realize improvement in liquid crystal panel productivity in manufacture of liquid crystal panels. <P>SOLUTION: Scribe grooves 5 are provided on the outer surface of one-side glass substrate 2 of a large-sized liquid crystal glass base plate 3 which is formed by arranging liquid crystal cells 4 vertically and horizontally between the glass substrates 1 and 2, and then a polarizer film 6 is pasted. The polarizer film 6 is cut with an ultrasonic cutter 7, and the glass substrate 2 is broken at the scribe grooves 5. Then, scribe grooves 51 are provided on the other glass substrate 1 to break it, and the large-sized liquid crystal glass base plate 3 is divided into liquid crystal glass plates 81 of liquid crystal cell unit, and a polarizer film 61 is pasted on the surface, on which the polarizer film is not pasted, of the liquid crystal glass plates 81. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method and an apparatus for manufacturing a liquid crystal panel, in which a large liquid crystal glass base plate is divided into liquid crystal cell units to obtain a unit liquid crystal panel.

  In manufacturing a liquid crystal panel, a liquid crystal injection method or a liquid crystal dropping method (ODF (One Drop Filling)) is performed as a step of filling a liquid crystal in a space between two glass substrates.

In the liquid crystal injection method, a large liquid crystal glass base plate in which a plurality of liquid crystal cell frames are arranged in parallel in the XY axes (vertical and horizontal) between two glass substrates is formed, and a liquid crystal suction port of each liquid crystal cell frame is formed. A medium-sized liquid crystal glass plate is obtained by cutting the liquid crystal glass base plate into row units so that is exposed in a horizontal row.
Next, the end edge of each liquid crystal cell frame on the medium size liquid crystal glass plate on the suction port side is immersed in the liquid crystal tank, and the liquid crystal is vacuum sucked into the liquid crystal cell frame. After filling the liquid crystal frame with liquid crystal, the liquid crystal suction port is closed with a sealant to form a plurality of liquid crystal cells on a medium format liquid crystal glass plate.
Next, excess liquid crystal such as liquid crystal adhering to the edge on the liquid crystal suction port side of the medium format liquid crystal glass plate and liquid crystal sucked out of the liquid crystal cell frame between the glass substrates is removed by a cleaning process.
Next, a deflection film having a size of a liquid crystal cell unit is adhered to the outer surfaces of both glass substrates of the medium format liquid crystal glass plate.
Next, the liquid crystal panel having the size of the liquid crystal cell unit is obtained by dividing the deflection film and the glass substrate into each liquid crystal cell unit (Patent Document 1).

In the liquid crystal dropping method, a liquid crystal cell frame is formed on one of the two glass substrates so as to be aligned in the XY axis direction, and the liquid crystal is dropped into each liquid crystal cell frame. The other glass substrate is placed on the liquid crystal cell frame to form a large liquid crystal glass base plate having a plurality of liquid crystal cells filled with liquid crystal in the liquid crystal cell frame.
Next, the large-sized liquid crystal glass base plate is divided into liquid crystal cell units, and a deflection film is attached to each liquid crystal glass plate of the liquid crystal cell unit to obtain a liquid crystal panel having a size of the liquid crystal cell unit.

  The former liquid crystal injection method consists of dividing a large liquid crystal glass base plate on which a liquid crystal cell is formed into a medium liquid crystal glass plate, injecting liquid crystal into each medium liquid crystal glass plate, and providing a liquid crystal suction port. Since it is necessary to perform sealing work, cleaning work, and affixing a deflection film, it takes time and productivity is low.

In the latter liquid crystal dropping method, a plurality of liquid crystal cells are already formed in the XY axis directions in the state of a large liquid crystal glass base plate. As in the liquid crystal injection method, once divided into medium format liquid crystal glass plates, the liquid crystal is injected into each medium format liquid crystal glass plate, and the liquid crystal adhering to the edge of the panel is removed by the liquid crystal injection. No work is required. For this reason, the liquid crystal dropping method has higher productivity than the liquid crystal injection method. However, the work of sticking a deflection film to individual glass plates in units of liquid crystal cells is a bottleneck for further improving productivity.
Therefore, as an improvement of the above-described current liquid crystal dropping method, a deflection film is attached to the outer surfaces of both glass substrates of the liquid crystal glass base plate, and the deflection film and the glass substrate are divided into units of each liquid crystal cell to obtain a liquid crystal. It has been proposed to obtain a liquid crystal panel having a cell unit size (Patent Document 2).

JP 2001-75067 A JP 2003-255360 A

In the case of the above-mentioned Patent Document 2, it is necessary to divide a large liquid crystal glass base plate into a liquid crystal panel in units of liquid crystal cells with a deflection film attached thereto. However, there are the following difficulties in dividing.
It is extremely difficult to cut together a hard and brittle material such as a glass substrate and a soft material such as a deflection film while overlapping them.
Patent Document 2 describes that a unit liquid crystal panel is obtained by sticking a deflection film on the outer surfaces of both glass substrates of a large-sized liquid crystal glass base plate and then cleaving with a scribe groove (see Patent Document 2). Paragraph “0017”).
However, there is no disclosure of the stage in which the scribe groove is formed and how the deflection film is divided.

When breaking with a scribe groove on the glass substrate, press the surface of the glass substrate opposite to the scribe groove and bend the glass substrate to expand the scribe groove, causing a crack on the bottom surface of the scribe groove. The crack is advanced.
Even if the glass surface on the scribe groove side is pressed, the glass substrate is broken regardless of the scribe groove, and a break failure occurs.

  Before sticking the deflection film on the outer surface of the glass substrate of the large liquid crystal glass base plate, preliminarily scribe grooves on both glass substrates, and then stick the deflection film on the outer surface of both glass substrates, A break can also be considered. In this case, when the deflection film is stuck to one glass substrate by applying pressure by a roller or the like, the other glass substrate may break, resulting in hindrance to the subsequent process.

  Further, even if the glass substrate breaks at the scribe groove, the deflecting film remains connected without breaking, so that the divided unit liquid crystal glass plates remain connected via the deflecting film.

In Patent Document 1, it is described that the glass substrate after the deflection film is attached is cut together with a laser (paragraph “0045”). However, like a laminate of the glass substrate and the deflection film, the material It is difficult to cut laminates having greatly different characteristics at once with a single laser irradiation apparatus.
Further, the laser irradiation device is expensive, and it is expensive to provide a laser irradiation device for cutting a deflection film and a radar irradiation device for cutting a glass substrate.
The present invention clarifies a method of manufacturing a liquid crystal panel that can solve the above problems.

The method for producing a liquid crystal panel according to claim 1 is characterized in that a plurality of liquid crystal cells (4) are placed between two glass substrates (1) and (2) in the X-axis direction and / or the Y-axis direction (longitudinal and / or horizontal). Forming a large liquid crystal glass base plate (3) arranged in parallel in the direction),
On the outer surface of one glass substrate (2) of the liquid crystal glass base plate (3), a scribe groove (5) for breaking the glass substrate (2) into each liquid crystal cell unit is provided in the X-axis direction and / or Y The step of applying in the axial direction,
Attaching a polarizing film (6) to almost the entire outer surface of the glass substrate (2) with the scribe groove (5);
Cutting the polarizing film (6) on the glass substrate (2) on the line corresponding to the scribe groove (5) with ultrasonic cutters (305) (310);
Breaking the glass substrate (2) with the deflecting film (6) pasted by the scribe groove (5);
On the other glass substrate (1) of the liquid crystal glass base plate (3), a scribe groove (51) for breaking the glass substrate (1) into each liquid crystal cell unit is provided in the X-axis direction and / or the Y-axis direction. Applying process,
Breaking the large-sized liquid crystal glass base plate (3) into the liquid crystal glass plate (81) of each liquid crystal cell unit by breaking the glass substrate (1) with the scribe groove (51);
A step of attaching the deflection film (61) to the non-attachment surface of the divided liquid crystal glass plate (81).

The method for producing a liquid crystal panel according to claim 2 is a large liquid crystal glass in which a plurality of liquid crystal cells (4) are arranged in parallel in the X-axis direction and / or the Y-axis direction between two glass substrates (1), (2). Forming the base plate (3);
On the outer surface of one glass substrate (2) of the liquid crystal glass base plate (3), a scribe groove (5) for breaking the glass substrate (2) into each liquid crystal cell unit is provided in the X-axis direction and / or Y The step of applying in the axial direction,
Attaching a polarizing film (6) to almost the entire outer surface of the glass substrate (2) with the scribe groove (5);
Cutting the polarizing film (6) on the glass substrate (2) on the line corresponding to the scribe groove (5) with ultrasonic cutters (305) (310);
Breaking the glass substrate (2) with the deflecting film (6) pasted by the scribe groove (5);
The other glass substrate (1) of the liquid crystal glass base plate (3) surrounds each liquid crystal cell (4) and is irradiated with a laser beam in the X-axis direction and / or the Y-axis direction to thereby attach the glass substrate (1). Breaking and dividing the liquid crystal glass base plate (3) into the liquid crystal glass plate (81) of each liquid crystal cell unit;
A step of attaching the deflection film (61) to the non-attachment surface of the divided liquid crystal glass plate (81).

The liquid crystal panel manufacturing method according to claim 3 is a large-sized liquid crystal glass in which a plurality of liquid crystal cells (4) are arranged in parallel in the X-axis direction and / or the Y-axis direction between two glass substrates (1), (2). Forming the base plate (3);
On the outer surface of one glass substrate (2) of the liquid crystal glass base plate (3), a scribe groove (5) for breaking the glass substrate (2) into each liquid crystal cell unit is provided in the X-axis direction and / or the Y-axis. Process in the direction,
A process of attaching polarizing films (6) and (61) to the outer surfaces of both glass substrates (1) and (2),
The polarizing film (6) adhered to the outer surface of the glass substrate (2) having the scribe groove (5) is applied to the scribe groove (5) by ultrasonic cutters (305) (310). Cutting the corresponding line,
Breaking the glass substrate (2) provided with the scribe groove (5) with the scribe groove (5);
A step of cutting the deflection film (61) on the other glass substrate (1) in the X-axis direction and / or the Y-axis direction by surrounding each liquid crystal cell (4) with ultrasonic cutters (305) (310). ,
The glass substrate (1) not provided with the scribe groove (5) is irradiated with a laser beam corresponding to the cutting line of the deflecting film (61) on the glass substrate (1) to thereby remove the glass substrate (1). The process includes a step of dividing the large liquid crystal glass base plate (3) into a liquid crystal panel of each liquid crystal cell unit by breaking.

  According to a fourth aspect of the present invention, in the method for manufacturing a liquid crystal panel according to the first to third aspects, after one or both glass substrates are scribed, a glass substrate is subjected to chemical polishing, and then a deflection film is adhered to the glass substrate.

The apparatus for manufacturing a liquid crystal panel according to claim 5 is a large-sized liquid crystal in which a plurality of liquid crystal cells (4) are arranged in parallel in the X-axis direction and / or the Y-axis direction between two glass substrates (1), (2). A first scribe groove that encloses each liquid crystal cell (4) on the outer surface of one glass substrate (2) of the glass base plate (3) and scribes grooves (5) in the X-axis direction and / or the Y-axis direction. Engraving device (100),
A deflecting film sticking device (200) for sticking a deflecting film (6) to the surface of the large-format liquid crystal glass base plate (3) on which the scribe groove (5) is engraved;
The deflection film (6) attached to the large-format liquid crystal glass base plate (3) is surrounded by the ultrasonic cutters (305) and (310) on the line corresponding to the scribe groove (5) to surround each liquid crystal cell (4). A deflection film cutting device (300) for cutting,
A first break device (500) for breaking the deflection film-attached glass substrate (2) of the large-format liquid crystal glass base plate (3) from which the deflection film (6) has been cut by a scribe groove (5);
A non-breaking glass substrate (1) of the large-format liquid crystal glass base plate (3) is provided with a scribe groove (51) in the X-axis direction and / or the Y-axis direction so as to surround each liquid crystal cell (4). 2 scribing groove engraving device (100a),
A second breaking device (1) for breaking a glass substrate (1) having a scribe groove (51) by a second scribe groove engraving device (100a) of the large size liquid crystal glass base plate (3) with the scribe groove (51). Including 500a).

The apparatus for manufacturing a liquid crystal panel according to claim 6 is a large-sized liquid crystal in which a plurality of liquid crystal cells (4) are arranged in parallel in the X-axis direction and / or the Y-axis direction between two glass substrates (1), (2). A scribe groove engraving is provided on the outer surface of one glass substrate (2) of the glass base plate (3) to enclose each liquid crystal cell (4) and scribe grooves (5) in the X-axis direction and / or the Y-axis direction. Device (100),
A deflecting film sticking device (200) for sticking a deflecting film (6) to the surface of the large-format liquid crystal glass base plate (3) on which the scribe groove (5) is engraved;
A deflection film cutting device (300) for cutting a deflection film (6) attached to a large-format liquid crystal glass base plate (3) on a line corresponding to a scribe groove (5) by ultrasonic cutters (305) (310) When,
A breaking device (500) for breaking the deflection film-attached glass substrate (2) of the large-format liquid crystal glass base plate (3) from which the deflection film (6) has been cut with a scribe groove (5);
Irradiate a laser beam in the X-axis direction and / or the Y-axis direction to the non-breaking glass substrate (1) of the large-format liquid crystal glass base plate (3), surrounding each liquid crystal cell (4), A laser breaker for breaking the glass substrate (1);

The apparatus for manufacturing a liquid crystal panel according to claim 7 is a large-sized liquid crystal in which a plurality of liquid crystal cells (4) are arranged in parallel in the X-axis direction and / or the Y-axis direction between two glass substrates (1), (2). A scribe groove engraving is provided on the outer surface of one glass substrate (2) of the glass base plate (3) to enclose each liquid crystal cell (4) and scribe grooves (5) in the X-axis direction and / or the Y-axis direction. Device (100),
A polarizing film sticking device (200) for sticking polarizing films (6) (61) to the outer surfaces of the large-format liquid crystal glass base plate (3);
Adhering to the outer surface of the glass substrate (2) against the glass substrate (2) with the scribe groove (5) of the large-format liquid crystal glass base plate (3) with the deflection film (6) attached A first polarizing film cutting device (300) for cutting the polarizing film (6) on the line corresponding to the scribe groove (5) by ultrasonic cutters (305) (310);
A break device (500) for breaking the glass substrate (2) on the side where the deflection film (6) of the large format liquid crystal glass base plate (3) is cut with a scribe groove (5);
The polarizing film (61) attached to the outer surface of the unbreaked glass substrate (1) of the large-format liquid crystal glass base plate (3) is placed on each liquid crystal cell (4) by ultrasonic cutters (305) (310). A second deflection film cutting device (300a) for cutting in the X-axis direction and / or the Y-axis direction.
The glass substrate (1) not provided with the scribe groove (5) is irradiated with a laser beam corresponding to the cutting line of the deflecting film (61) on the glass substrate (1) to thereby remove the glass substrate (1). Includes a laser break device to break.

  In claim 1, the scribe groove (5) is provided on the outer surface, and the deflection film (6) of the glass substrate (2) on which the deflection film (6) is adhered is cut by an ultrasonic cutter (305). At this time, since the blade edge (305a) of the ultrasonic cutter (305) runs on the scribe groove (5), even if the blade edge (305a) penetrates the thickness of the deflecting film (7), it vibrates at a very high speed. It is possible to prevent the cutting edge (305a) being in contact with the hard glass substrate (2) as much as possible, to minimize damage to the glass surface and to prevent the cutting edge (305a) from being worn.

As described above, one of the two glass substrates (1) and (2) of the large-format liquid crystal glass base plate (3) is left large and the large-format deflection film ( After the 6) is pasted, the deflection film (6) can be cut and the glass substrate (2) can be broken in the scribe groove (5) in each liquid crystal cell (4) unit. Therefore, the work performance ratio is greatly improved as compared with the conventional work of sticking the deflection films one by one after forming the liquid crystal glass plate of the liquid crystal cell unit as in the prior art.
For the other glass substrate (1), an operation of attaching a unit-size deflection film to a liquid crystal glass plate of a liquid crystal cell unit is performed, but two glass substrates of a large liquid crystal glass base plate (3) Even if the method of the present invention is performed only on one of the glass substrates (2) among (1) and (2), the work efficiency is improved as a whole.
Further, in the method of manufacturing a liquid crystal panel according to claim 1, an expensive laser irradiation device is not required for cutting the deflection films (6) (61) and breaking the glass substrates (1) (2), compared with the laser irradiation device. At a very low cost, a scribe groove engraving device for glass and an ultrasonic cutter specification cutting device (300) for a deflection film can be installed, and the manufacturing cost of the liquid crystal panel can be reduced.

  The manufacturing method of the liquid crystal panel of claim 2 is that, after breaking one glass substrate (2) of the large-format liquid crystal glass base plate (3), the other glass substrate (1) is not broken by the scribe groove (5). The only difference from the first aspect is that the laser beam is broken by the irradiation of the laser beam, and the other effects are the same as those of the first aspect.

According to claim 3, when the entire large-sized liquid crystal glass base plate (3) is divided into liquid crystal cell units, the deflecting films (6) (61) are already attached to both sides of each of the segment pieces, and the unit liquid crystal panel Therefore, the trouble of sticking the liquid crystal film (61) to the minute piece can be saved.
If the unnecessary part of the glass substrate (2) that has been broken first is removed, when the laser beam is irradiated to break the other glass substrate (1), the deflection film (61) is attached from the opposite side of the surface. Irradiation with a laser beam can be performed, and the possibility of adverse effects such as melting the edge of the deflection film (61) by irradiating the edge of the deflection film (61) with the laser beam can be eliminated.

The chemical polishing step in the method for producing a liquid crystal panel according to claim 4 has the following effects.
Also in the conventional method of manufacturing a liquid crystal panel, after two large glass substrates are bonded together, chemical polishing is performed to reduce the thickness of the glass and to make the glass surface smoother.
However, in claim 4, it is significant to chemically polish the glass substrate (2) after the scribe groove (5) is applied to the glass substrate (2). That is, since the wall surface of the scribe groove (5) formed by mechanically scratching the glass with the grooved blade becomes a rough surface, it becomes a state in which cracks are very likely to proceed. When cutting the deflecting film (6), if the blade pressure and vibration of the ultrasonic cutters (305) (310) are applied to the scribe groove (5), cracks in the scribe groove (5) will progress and the fineness will be reduced. There is a possibility that inconvenience that many glass cullet adheres to the end portion of the cut deflection film (6). By smoothing the wall surface of the scribe groove (5) in advance by chemical polishing, the occurrence of glass cullet can be suppressed even if the blade pressure and vibration of the ultrasonic cutter (305) are applied.

  A liquid crystal panel manufacturing apparatus according to a fifth aspect is an apparatus for performing the liquid crystal panel manufacturing method according to the first aspect, and produces the effect of the first aspect.

  A liquid crystal panel manufacturing apparatus according to a sixth aspect is an apparatus for performing the liquid crystal panel manufacturing method according to the second aspect, and produces the effect of the second aspect.

  A liquid crystal panel manufacturing apparatus according to a seventh aspect is an apparatus for performing the liquid crystal panel manufacturing method according to the third aspect, and produces the effect of the third aspect.

In the following description, for the sake of convenience in explaining both glass substrates, one is a first glass substrate (1) and the other is a second glass substrate (2), but both glass substrates (1) and (2) are interchanged. However, the same can be done.
[Production process of the first embodiment]

First step (production of large-format liquid crystal glass base plate)
FIG. 2 shows a large liquid crystal glass base plate (3). The liquid crystal glass base plate (3) is disposed between the first and second rectangular glass substrates (1) and (2). Liquid crystal cells (4) are regularly formed in the XY axis (vertical and horizontal) directions.
In the embodiment, the large liquid crystal glass base plate (3) has the liquid crystal cell (4) arranged in the X-Y axis direction. However, the present invention is not limited to this. Of course, the present invention can also be carried out on a large liquid crystal glass base plate in which liquid crystal cells are arranged in either direction.
In order to form the large-sized liquid crystal glass base plate (3), as shown in FIG. 1, the liquid crystal cell frame (41) is used on the first glass substrate (1) in the XY axis direction, and the adhesive is also used. It is formed by applying a sealing agent.
Next, a predetermined amount of liquid crystal is dropped onto each liquid crystal cell frame (41).
Next, the second glass substrate (2) is overlaid on the first glass substrate (1) from above the liquid crystal cell frame (41).
There is a gap of several μm between the first glass substrate (1) and the second glass substrate (2) due to spacer grains (not shown) interposed between the glass substrates (1) and (2). The liquid crystal spreads and fills to form a liquid crystal cell (4).
The first and second glass substrates (1) are preliminarily processed for the liquid crystal glass substrate, such as formation of a wiring film, alignment treatment, and formation of a seal pattern, but these are known. Detailed description will be omitted.

Second step (formation of scribe grooves on the second glass substrate)
As shown in FIG. 3, the liquid crystal cell (4) is surrounded on the outer surface of the second glass substrate (2), and a scribe groove (5) is formed with a grooved blade in the XY direction (see FIG. 2). Dotted line (see 50)).

Third step (chemical polishing of large-format liquid crystal glass base plate)
The entire large-sized liquid crystal glass base plate (3) provided with the scribe groove (5) on the second glass substrate (2) is chemically polished to reduce the thickness of both the glass substrates (1) and (2), and the scribe groove ( 5) The fine cracks on the wall surface are eliminated, and the groove surface of the scribe groove (5) is made smooth.

Fourth step (attaching a deflection film to the second glass substrate)
As shown in FIG. 4, a deflection film (6) having a size covering almost the entire area of the second glass substrate (2) is bonded onto the second glass substrate (2).

Fifth step (cutting the deflection film on the second glass substrate)
As shown in FIG. 4, the blade edge (305a) of the ultrasonic cutter (305) is applied to the deflection film (6) at a position directly above the scribe groove (5) on the second glass substrate (2). Then, the blade edge (305a) is caused to travel along the scribe groove (5), and the deflection film (6) is cut in the XY axis direction.

Sixth step (breaking of the second glass substrate)
As shown in FIG. 4, from the first glass substrate (1) side opposite to the second glass substrate (2) provided with the scribe groove (5), the first glass is pressed by a pressing member (503) such as a break roller. The second glass substrate (2) is pressed through the substrate (1). The pressing force is such that the second glass substrate (2) cracks from the groove bottom of the scribe groove (5) and breaks at the scribe groove (5), but the first glass substrate is not provided with the scribe groove (5). (1) is a degree to which a slight amount of bending occurs.
As a result, the second glass substrate (2) breaks at the scribe groove (5), but damage to the first glass substrate (1) is avoided.

Seventh step (formation of scribe grooves on the first glass substrate)
The first glass substrate (1) is inverted as necessary, and as shown in FIG. 5, the liquid crystal cell (4) is surrounded on the outer surface of the first glass substrate (1), in the XY axis direction, Make a scribe groove (51) with a grooved blade.
As is well known, the size of the upper and lower glass plates of the finished unit liquid crystal panel is different in order to expose the wiring from the liquid crystal cell (4) and connect it to the external wiring. The scribe groove (51) may overlap with the break end face of the first glass substrate (1) (as shown in FIG. 5) or may not overlap (not shown).

Eighth step (breaking of the first glass substrate)
The first glass substrate (1) is pressed from the surface opposite to the scribe groove (51), that is, from the second glass substrate (2) side, and the first glass substrate (1) is pushed by the scribe groove (51). By breaking, a liquid crystal glass plate (81) in units of liquid crystal cells (4) is formed as shown in FIG.

Ninth step (sticking deflection film to liquid crystal glass plate)
As shown in FIG. 7, a polarizing film (61) of the same shape or dwarf as the liquid crystal glass plate (81) is attached to the surface of the first glass substrate (1) of each liquid crystal glass plate (81) which is not attached. Thus, a liquid crystal panel (8) is obtained.

[Liquid crystal panel manufacturing apparatus for performing the steps of the first embodiment]
FIG. 8 shows detailed steps from the second step to the break of the glass substrate in the eighth step of the first embodiment, and FIGS. 9 to 12 show a liquid crystal panel manufacturing apparatus for carrying out these steps. . However, in each case, the chemical polishing in the third step is omitted.
In FIG. 8, the orientation of the large-sized liquid crystal glass base plate (3) and the top-and-bottom state in each process are shown. The white large-sized liquid crystal glass base plate (3) has the top (upper side) of the second glass substrate (2 ), The large-sized liquid crystal glass base plate (3) with diagonal lines indicates that the top is the first glass substrate (1).

  The liquid crystal panel manufacturing apparatus includes a first scribe groove that encloses each liquid crystal cell and forms a scribe groove (5) on the outer surface of a second glass substrate (2) that is the top side of a rectangular large-format liquid crystal glass base plate (3). An engraving device (100), a deflecting film adhering device (200) for adhering the deflecting film (6) to the surface of the large-format liquid crystal glass base plate (3) where the scribe groove (5) is engraved, and a large-format liquid crystal A deflection film (6) attached to the glass base plate (3) is cut along a line corresponding to the scribe groove (5) by surrounding each liquid crystal cell (4) with ultrasonic cutters (305) (310). First break for breaking the film cutting device (300) and the second glass substrate (2) on the deflection film attaching side of the large-format liquid crystal glass base plate (3) from which the deflection film (6) has been cut by the scribe groove (5) Each liquid crystal cell is surrounded by the device (500) and the first glass substrate (1) which is not broken of the large size liquid crystal glass base plate (3). A second scribe groove engraving device (100a) for forming a scribe groove (51) and a second break device (500a) for breaking the first glass substrate (1) of the large-format liquid crystal glass base plate (3) with the scribe groove (51). ) Is arranged from the upstream side to the downstream side.

As shown in FIG. 9, the large-format liquid crystal glass base plate (3) is supplied one by one on the table (603) with the second glass substrate (2) facing upward (top side), and is conveyed by the transport means (600). 1 scribe groove grooving device (100).
The first scribe groove engraving device (100) includes an upstream X-axis direction groove engraving portion (101) and a downstream Y-axis direction scribe groove engraving portion (106).
The conveying means (600) moves the lifting frame (601) having a number of suction cups (602) on its lower surface up and down and moves back and forth to move the large liquid crystal glass base plate (3) into the X-axis direction groove engraving section (101). Transport to.
A suction hose (not shown) is connected to each suction cup (602), and suction release can be controlled (the same applies to the “suction cup” described below).

The X-axis direction groove engraving portion (101) and the Y-axis direction scribe groove engraving portion (106) of the first scribe groove engraving device (100) are both a table (102) (107) and the table (102) ( 107) straddling parallel rails (104) (104), (109) (109) and a portal slide base (103) (108) that runs intermittently back and forth, and on the slide base (103) (108) It consists of grooved blades (105) (110) made of super steel, diamond, etc. that slide to the left and right.
At the X-axis direction groove engraving section (101), the large-format liquid crystal glass base plate (3) on the table (102) is moved by the groove engraving blade (105) every time the slide base (103) is intermittently stopped. A scribe groove (5) is provided parallel to the direction.
Horizontal reversal conveying means (600a) in which a large-sized liquid crystal glass base plate (3) provided with a scribe groove (5) parallel to the X-axis direction is added to the conveying means (600) by 90 ° in a horizontal plane. Thus, the sheet is conveyed onto the table (107) of the Y-axis direction scribe groove engraving section (106).
The large-format liquid crystal glass base plate (3) has a scribe groove (110) parallel to the Y-axis direction by the grooved blade (110) every time the slide base (108) is intermittently stopped at the Y-axis direction scribe groove engraved portion (106). 5) is applied.
Note that the conveying means (600a) is large when the slide table (103) (108) is retracted to the side of the table (102) (107) and the table (102) (107) is opened. The liquid crystal glass base plate (3) is transferred to the tables (102) and (107).
In the following description, when the large-sized liquid crystal glass base plate (3) is transported from the upstream side to the downstream side without changing the direction, the same transport unit as the transport unit (600) is used, and the direction is reversed by 90 °. When transported in the same manner, the transport means similar to the horizontal inversion transport means (600a) is used.

The deflection film sticking device (200) includes a table (201), a pressing roller (202) that moves by rolling from the downstream side to the upstream side on the table (201), and the Y-axis direction scribe groove engraving. Horizontal reversing and conveying means (not shown) for horizontally reversing the large-format liquid crystal glass base plate (3) from the section (106) onto the table (201) by 90 ° and the deflecting film (6) on the table (201) And a deflection film supply device (not shown) for supplying the large-sized liquid crystal glass base plate (3) so that the downstream end is aligned and overlapped.
The large size liquid crystal glass base plate (3) on the table (201) is aligned with the downstream end and the deflection film (6) is overlapped, and the press roller (202) rolls and moves to the upstream side. The deflection film (6) can be adhered to the large-format liquid crystal glass base plate (3) without entraining air between the liquid crystal glass base plate (3) and the deflection film (6).
A deflection film supply device (not shown) can implement the deflection film supply device of this conventional deflection film sticking device, and can also supply the deflection film in alignment with the large format liquid crystal glass base plate (3). Any configuration is acceptable.

The deflection film cutting device (300) includes an upstream X-axis direction cutting part (301), a downstream Y-axis direction cutting part (306), and an X-axis direction cutting part (301) to a Y-axis direction cutting part ( 306) comprises a horizontal reversing and conveying means (not shown) for horizontally reversing and conveying the large liquid crystal glass base plate (3) by 90 °.
Both the X-axis direction cutting part (301) and the Y-axis direction cutting part (306) cross the table (302) (307) and the table (302) (307), and the parallel rails (304) (304), (309) (309) A gate-shaped slide base (303) (308) that intermittently travels back and forth on the top and an ultrasonic cutter (305) (310) that slides left and right on the slide base (303) (308).
The deflection film (6) adhered to the large-format liquid crystal glass base plate (3) on the table (302) is moved in the X-axis direction every time the slide table (303) is intermittently stopped by the X-axis direction cutting part (301). Cut parallel to the direction.
Further, the deflection film (6) is cut parallel to the Y-axis direction at the Y-axis direction cutting section (306) every time the slide base (308) is intermittently stopped.

The top of the large liquid crystal glass base plate (3) is reversed between the Y-axis direction cutting part (306) and the first breaker (500) located downstream of the Y-axis direction cutting part (306). First top-and-bottom reversing means (400) is provided.
As shown in FIG. 11, the top-and-bottom reversing means (400) includes a table (401) on which the large-format liquid crystal glass base plate (3) is placed and a fork for reversing the large-format liquid crystal glass base plate (3) on the table (401). 402).
The table (401) is provided with a number of push-up pins (403) that can appear and disappear from the upper surface of the table all at once.
The fork (402) can be moved up and down, can be turned 180 ° in a vertical plane, and can be moved horizontally in a horizontal plane at a height position approaching the upper surface of the table (401).
The fork (402) has a number of suction cups (404).
The large-sized liquid crystal glass base plate (3) transported to the table (401) is lifted from the table (401) by raising the push-up pins (401) all at once.
The fork (401) moves horizontally and enters between the table (401) and the large-format liquid crystal glass base plate (3).
The fork (401) is raised to lift the large liquid crystal glass base plate (3), and is inverted by 180 ° in the vertical plane while being sucked by the suction cup (404).
The fork (401) descends, and the large-format liquid crystal glass base plate (3) is transferred to the push-up pin group to release the suction.
When the fork (401) moves horizontally and returns to the original position, the push-up pin group descends to place the large liquid crystal glass base plate (3) on the table (401).
As a result, the large-format liquid crystal glass base plate (3) stands by with the polarizing film sticking surface, that is, the engraved surface of the scribe groove (5) on the lower side.

The first break device (500) of the embodiment includes a table (501) and a roll-shaped pressing member (503) having elasticity that is movable up and down above the table (501) and movable in a horizontal plane. Is done.
The table (501) can be rotated by 90 ° in the horizontal plane around the table center C.
The pressing member (503) can be moved up and down by a pressing drive device (not shown) such as an air cylinder, and a horizontal movement driving device (not shown) capable of arbitrarily setting a horizontal moving distance using a control motor or the like as a drive source. It can move horizontally.
The pressing member (503) extends in the X-axis direction against the large-sized liquid crystal glass base plate (3) placed on the table (501) with the deflection film sticking surface, that is, the scribe groove (5) engraved surface down. In the break groove group, the lower end is lowered so as to press the corresponding position of the break groove on one end side, and the large-format liquid crystal glass base plate (3) is broken by the break groove.
Next, the pressing member (503) rises, moves laterally by one pitch, then descends again, and breaks the large-format liquid crystal glass base plate (3) in the next break groove. This operation is repeated to break at all break grooves in the X-axis direction.
Next, the table (501) is rotated by 90 °, and the above-described breaking procedure is repeated to break the large liquid crystal glass base plate (3) even in all the breaking grooves in the Y-axis direction.
Of course, the lateral movement pitch of the pressing member (503) is the pitch of the break grooves in the Y-axis direction.
In this way, the second glass substrate (2) of the large format liquid crystal glass base plate (3) is broken at each scribe groove (5).
A thin elastic sheet such as a paper sheet may be laid on the table (501) as necessary.

  The second scribe groove engraving device (100a) on the downstream side of the first break device (500) has the same configuration as the first scribe groove engraving device (100), and is transported from the first break device (500). On the first glass substrate (1) which is not broken of the large-sized liquid crystal glass base plate (3) formed, scribe grooves (51) (51) are formed in the XY directions so as to surround each liquid crystal cell (4). Apply.

  As shown in FIG. 12, the second vertical reversing means (400a) similar to the first vertical reversing means (400) is disposed downstream of the second scribe groove engraving device (100a), and the scribe grooves (51) ( 51) is reversed so that the first glass substrate (1) of the large-format liquid crystal glass base plate (3) on which it is subjected is placed on the lower side.

  A second break device (500a) having the same configuration as that of the first break device (500) is disposed downstream of the second top and bottom reversing means (400a), and the first glass substrate (3) of the large format liquid crystal glass base plate (3) is provided. 1) is broken by scribe grooves (51) (51). Thus, the large-format liquid crystal glass base plate (3) is divided into liquid crystal glass plates (81) in units of liquid crystal cells (4).

[Manufacturing process of the second embodiment]
First to sixth steps The same as the first to sixth steps of the first embodiment.
Seventh step The first glass exposed by removing unnecessary portions of the second glass substrate (2) by breaking the outer surface of the first glass substrate (1) or the second glass substrate (2) in the sixth step. The first glass substrate (1) is broken by irradiating the inner surface of the substrate (1) with a laser beam to form a liquid crystal glass plate (81) in units of liquid crystal cells (4) as shown in FIG.

Eighth step The same as the ninth step in the first embodiment.

[Liquid crystal panel manufacturing apparatus for carrying out the process of the second embodiment]
In the liquid crystal panel manufacturing apparatus of the first embodiment described above, the second scribe groove engraving apparatus (100a) in FIG. 11 may be replaced with a laser irradiation break apparatus (700).
The laser irradiation break device (700) may be a laser beam irradiation device (not shown) instead of the groove cutting blades (105) (110) of the scribe groove cutting device (100) of FIG. .
In addition, if the laser beam irradiation device is moved in two dimensions on the XY axis, only one laser beam irradiation device is required.

[Manufacturing process of the third embodiment]
1st thru | or 3rd process It is the same as the 1st thru | or 3rd process of the said 1st Example.
Fourth step (attaching a deflection film to the first and second glass substrates)
A polarizing film (6) (61) having a size covering almost the entire area of the glass substrate is adhered to the outer surfaces of the first and second glass substrates (1) and (2).

Fifth step (cutting the deflection film on the second glass substrate)
The polarizing film (6) adhered to the outer surface of the second glass substrate (2) provided with the scribe groove (5) is the scribe groove (5) as described in the first embodiment. And cut with ultrasonic cutters (305) and (310).

Sixth step (breaking of the second glass substrate)
As described in the first embodiment, the second glass substrate (2) is pressed from the first glass substrate (1) side to break only the second glass substrate (2). Remove unnecessary glass fragments after the break.

Seventh step (cutting the deflection film on the first glass substrate)
From the top of the deflection film (61) of the first glass substrate (1), the blade edge of the ultrasonic cutter is applied to run along the scribe groove (51), and the deflection film (61) is moved in the XY axis direction. Disconnect.

Eighth step (breaking of the first glass substrate)
The first glass substrate (1) is broken by irradiating the first glass substrate (1) with a laser beam in the XY directions corresponding to the cutting lines of the deflection film (61).
Thereby, the liquid crystal panel (8) of each liquid crystal cell unit can be obtained from the large liquid crystal glass base plate (3).

[Liquid crystal panel manufacturing apparatus for carrying out the process of the third embodiment]
FIG. 13 shows detailed steps from the second step to the eighth step of the glass substrate break in the third embodiment.
The liquid crystal panel manufacturing apparatus for carrying out the steps of the third embodiment is arranged on both sides of the large liquid crystal glass base plate (3) on the downstream side of the first scribe groove engraving apparatus (100) of the first embodiment shown in FIG. A deflection film laminating device (200a) capable of laminating the deflecting films (6) and (61), the top and bottom reversing means (400) and 400 shown in FIG. 400), on the downstream side of the deflection film cutting device (300) shown in FIG. 10, and on the downstream side of the deflection film cutting device (300), the top and bottom reversing means (400) and the top and bottom turning means (400) shown in FIG. 11 on the downstream side, a deflection film cutting device (300) shown in FIG. 10 on the downstream side of the first breaking device (500), and a downstream side of the deflection film cutting device (300). The laser irradiation break device (700) described in the second embodiment may be provided.

  The deflecting film sticking device (200a) capable of sticking the deflecting films (6) and (61) on both sides of the large-format liquid crystal glass base plate (3) is the deflecting film sticking device (200) shown in FIG. A film attaching part (200c) similar to the film attaching part (200b) is provided on the downstream side of the same film attaching part (200b), and the top and bottom inversion means (400) shown in FIG. Is provided.

The line configurations of the first to third liquid crystal panel manufacturing apparatuses described above are configured so that the large-format liquid crystal glass base plate (3) is processed from above in all the steps. Of the scribe groove engraving process, deflecting film sticking process, and breaking process, the desired process can be performed from below the large format liquid crystal glass base plate (3). Either or both of (400) and the second top / bottom reversing means (400a) can be omitted.
Further, although the apparatus line is configured such that the longitudinal direction of the large-format liquid crystal glass base plate (3) is directed to the conveying direction of the apparatus line, the present invention is not limited to this. In short, it is a matter of course that any apparatus line capable of performing any one of the manufacturing processes of claims 1 to 3 is included in the technical scope of the present invention.

  In the liquid crystal panel manufacturing apparatus of the third embodiment, when the deflection film (6) is stuck on both sides of the large-format liquid crystal glass base plate (3), the large-size liquid crystal glass base plate (3) is raised once. The deflection film (6) can be pasted on both sides of the large-format liquid crystal glass base plate (3) by the above process.

  The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

For example, in the above embodiment, the large-format liquid crystal glass base plate (3) has the liquid crystal cells (4) aligned in the X-axis and Y-axis directions, but the liquid crystal cell ( Of course, the present invention can also be implemented for the large-format liquid crystal glass base plate (3) on which 4) are arranged.
Therefore, if the medium-sized liquid crystal glass base plate in which the liquid crystal cell is formed by the liquid crystal injection method is the large-format liquid crystal glass base plate in the present invention, the implementation of the present invention is not limited to the liquid crystal dropping method but the liquid crystal injection method. It can also be applied to a liquid crystal glass base plate on which cells are formed.

It is a perspective view which shows a part of glass substrate in which the liquid crystal cell frame was formed. It is a perspective view which shows a part of large format liquid crystal glass base plate. It is a partial longitudinal cross-sectional view of the liquid crystal glass base plate which gave the scribe groove | channel to one glass substrate. It is a partial longitudinal cross-sectional view of the liquid crystal glass base plate which stuck the deflection | deviation film on the glass substrate which gave the scribe groove | channel. It is a fragmentary longitudinal cross-sectional view of the liquid crystal glass base plate which broke the glass substrate which gave the scribe groove | channel. It is a longitudinal cross-sectional view of the unit-sized oval liquid crystal glass plate obtained by dividing the liquid crystal glass base plate. It is a longitudinal cross-sectional view of a unit size liquid crystal panel. It is process drawing of 1st Example. It is a schematic perspective view of a 1st scribe groove engraving apparatus. It is a schematic perspective view of a deflection film sticking apparatus and a deflection film cutting apparatus. It is a schematic perspective view of a top and bottom inversion means and a break device. It is explanatory drawing which shows the arrangement | positioning relationship of a 2nd scribe groove | channel engraving apparatus, a top and bottom inversion means 2nd top and bottom inversion apparatus, and a 2nd break apparatus. It is process drawing of 3rd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st glass substrate 2 2nd glass substrate 3 Liquid crystal glass base plate 4 Liquid crystal cell
41 LCD cell frame 5 Scribe groove
51 Scribe groove 6 Deflection film
61 Deflection film

Claims (7)

Forming a large liquid crystal glass base plate in which a plurality of liquid crystal cells are arranged in parallel in the X-axis direction and / or the Y-axis direction (longitudinal direction and / or lateral direction) between two glass substrates;
A step of providing, on the outer surface of one glass substrate of the liquid crystal glass base plate, a scribe groove for breaking the glass substrate into each liquid crystal cell unit in the X-axis direction and / or the Y-axis direction;
A step of attaching a polarizing film to almost the entire outer surface of the glass substrate with scribed grooves,
A step of cutting the polarizing film on the glass substrate with a ultrasonic cutter on a line corresponding to the scribe groove,
A process of breaking the glass substrate with the deflection film pasted with a scribe groove,
A step of providing, on the other glass substrate of the liquid crystal glass base plate, a scribe groove for breaking the glass substrate in units of each liquid crystal cell in the X-axis direction and / or the Y-axis direction;
Breaking the large-sized liquid crystal glass base plate into liquid crystal glass plates of each liquid crystal cell unit by breaking the glass substrate with the scribe grooves,
A step of adhering the deflection film to the surface of the divided liquid crystal glass plate where the deflection film is not adhered,
Liquid crystal panel manufacturing method including Forming a large liquid crystal glass base plate in which a plurality of liquid crystal cells are arranged in parallel in the X-axis direction and / or the Y-axis direction (longitudinal direction and / or lateral direction) between two glass substrates;
A step of providing, on the outer surface of one glass substrate of the liquid crystal glass base plate, a scribe groove for breaking the glass substrate into each liquid crystal cell unit in the X-axis direction and / or the Y-axis direction;
A step of attaching a polarizing film to almost the entire outer surface of the glass substrate with scribed grooves,
A step of cutting the polarizing film on the glass substrate with a ultrasonic cutter on a line corresponding to the scribe groove,
A process of breaking the glass substrate with the deflection film pasted with a scribe groove,
The other glass substrate of the liquid crystal glass base plate (3) is surrounded by each liquid crystal cell and irradiated with a laser beam in the X-axis direction and / or Y-axis direction to break the glass substrate. A step of dividing the liquid crystal cell unit into liquid crystal glass plates;
A step of adhering the deflection film to the surface of the divided liquid crystal glass plate where the deflection film is not adhered,
Liquid crystal panel manufacturing method including Forming a large liquid crystal glass base plate in which a plurality of liquid crystal cells are arranged in parallel in the X-axis direction and / or the Y-axis direction (longitudinal direction and / or lateral direction) between two glass substrates;
A step of providing, on the outer surface of one glass substrate of the liquid crystal glass base plate, a scribe groove for breaking the glass substrate into each liquid crystal cell unit in the X-axis direction and / or the Y-axis direction;
A process of attaching a polarizing film to the outer surface of each of the glass substrates,
A step of cutting the polarizing film adhered to the outer surface of the glass substrate with the scribe groove on the line corresponding to the scribe groove by an ultrasonic cutter,
A step of breaking the scribe groove on the glass substrate,
Cutting the deflection film on the other glass substrate in the X-axis direction and / or the Y-axis direction by surrounding each liquid crystal cell with an ultrasonic cutter;
A large-sized liquid crystal glass base plate is formed in each liquid crystal cell by irradiating a laser beam corresponding to the cutting line of the deflection film on the glass substrate and breaking the glass substrate on a glass substrate not provided with a scribe groove. The process of dividing into unit liquid crystal panels,
Liquid crystal panel manufacturing method including   The method for producing a liquid crystal panel according to any one of claims 1 to 3, wherein a scribe groove is applied to one or both glass substrates, then the glass substrate is chemically polished, and then a deflection film is attached to the glass substrate. The outer surface of one glass substrate of a large liquid crystal glass base plate in which a plurality of liquid crystal cells are arranged in parallel in the X-axis direction and / or Y-axis direction (vertical direction and / or horizontal direction) between two glass substrates A first scribe groove engraving device that surrounds each liquid crystal cell and forms scribe grooves in the X-axis direction and / or the Y-axis direction;
A deflecting film sticking device for sticking a deflecting film to a surface on which a scribe groove of a large-sized liquid crystal glass base plate is engraved;
A deflection film cutting device for cutting the deflection film attached to the large-format liquid crystal glass base plate by enclosing each liquid crystal cell on the line corresponding to the scribe groove with an ultrasonic cutter;
A first breaking device for breaking the deflection film pasting side glass substrate of the large-format liquid crystal glass base plate from which the deflection film has been cut with a scribe groove;
A second scribe groove engraving device that encloses each liquid crystal cell and scribes grooves in the X-axis direction and / or the Y-axis direction on the unbreaked glass substrate of the large-format liquid crystal glass base plate;
A liquid crystal panel manufacturing apparatus including a second breaking device for breaking a glass substrate having a scribe groove formed by a second scribe groove engraving device on a large-sized liquid crystal glass base plate. The outer surface of one glass substrate of a large liquid crystal glass base plate in which a plurality of liquid crystal cells are arranged in parallel in the X-axis direction and / or Y-axis direction (vertical direction and / or horizontal direction) between two glass substrates A scribe groove engraving device that surrounds each liquid crystal cell and scribes grooves in the X-axis direction and / or the Y-axis direction;
A deflecting film sticking device for sticking a deflecting film to a surface on which a scribe groove of a large-sized liquid crystal glass base plate is engraved;
A deflection film cutting device for cutting a deflection film attached to a large-format liquid crystal glass base plate on a line corresponding to a scribe groove by an ultrasonic cutter;
A breaking device for breaking the deflection film pasting side glass substrate of the large-format liquid crystal glass base plate from which the deflection film (6) has been cut with a scribe groove;
A laser break device that breaks the glass substrate by irradiating a laser beam in the X-axis direction and / or the Y-axis direction to each non-breaking glass substrate of the large-format liquid crystal glass base plate, surrounding each liquid crystal cell A liquid crystal panel manufacturing apparatus. The outer surface of one glass substrate of a large liquid crystal glass base plate in which a plurality of liquid crystal cells are arranged in parallel in the X-axis direction and / or Y-axis direction (vertical direction and / or horizontal direction) between two glass substrates A scribe groove engraving device that surrounds each liquid crystal cell and scribes grooves in the X-axis direction and / or the Y-axis direction;
A polarizing film sticking device for sticking a polarizing film to the outer surface of each large-sized liquid crystal glass base plate;
Corresponding to the scribe groove by the ultrasonic cutter, the polarizing film attached to the outer surface of the glass substrate of the large-sized liquid crystal glass base plate to which the deflection film is attached, to which the scribe groove is applied. A first deflection film cutting device for cutting on a line;
A break device that breaks the glass substrate on the side where the deflection film of the large-format liquid crystal glass base plate is cut with a scribe groove;
Secondly, the polarizing film attached to the outer surface of the unbreaked glass substrate of the large-format liquid crystal glass base plate is cut in the X-axis direction and / or the Y-axis direction by surrounding each liquid crystal cell with an ultrasonic cutter. A deflection film cutting device;
An apparatus for manufacturing a liquid crystal panel, comprising: a laser breaker that breaks the glass substrate by irradiating a glass substrate not scribed with a laser beam corresponding to a cutting line of a deflection film on the glass substrate.

Images