JP2001228470A - Method and device for sticking of polarizing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for sticking so as to prevent sealing of bubbles between a liquid crystal panel and a polarizing plate and to prevent damages on the surface of the polarizing plate. SOLUTION: When a polarizing plate 1 having an adhesive layer is to be stuck to a liquid crystal panel 2, a screen 150a is disposed parallel to the face of the liquid crystal panel 2 where the polarizing plate 1 is to be stuck so as to hold the polarizing plate 1 by sucking through the screen 150a while keeping the surface having the adhesive layer to face the liquid crystal panel 2. By pressing the screen 150a, one end of the surface of the polarizing plate 1 having the adhesion layer is pressed to the liquid crystal panel 2, then while the screen 150a is pressed to the liquid crystal panel 2 by using a roller 151 which can be brought into contact with the opposite surface of the screen 150a to the surface holding the polarizing plate 1, the roller 151 is moved from the one end to the other end of the polarizing plate 1 to stick the polarizing plate 1 from the one end to the other end to the liquid crystal panel 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for attaching a film for a liquid crystal display device having an adhesive layer to a liquid crystal panel (hereinafter referred to as "polarizing plate").

[0002]

2. Description of the Related Art Conventionally, in order to prevent air bubbles from remaining between a liquid crystal panel and a polarizing plate when the polarizing plate is bonded to a liquid crystal panel, for example, a polarizing plate is disclosed in Japanese Patent Application Laid-Open No. 9-146059. A device has been proposed.

FIG. 25 shows a polarizing plate adhering device described in the above-mentioned publication. This device comprises a base 202 capable of holding a liquid crystal panel 2 and capable of moving in a horizontal direction, and an upper part with respect to the base 202. A support member 20 is provided at a distance, and has a suction hole 203a for vacuum suction formed to face downward, for holding the polarizing plate 1.
3 and the polarizing plate 1 disposed on the front side of the support 203.
Sticking roller 201 for sticking to liquid crystal panel 2
And a nozzle 204 that is opened such that its outlet faces the rear side surface of the sticking roller 201.

Next, the operation of the polarizing plate sticking apparatus having the above configuration will be described with reference to FIG.

First, the polarizing plate 1 is suctioned by a vacuum pump or the like (not shown) through the suction holes 203a of the support 203.
Hold. Next, while the support 203 is positioned on the liquid crystal panel 2 as shown in the figure, the front end 1 f of the polarizing plate 1 is adhered and fixed to the liquid crystal panel 2.

In this state, after air is blown from the nozzle 204, the base 202 is moved in the direction of arrow A, and the polarizing plate 1 is attached to the surface of the liquid crystal panel 2 with the movement of the base 202. The polarizing plate 1 is attached to the support 20.
Slide along the lower surface of 3. At this time, when the end portion 1e of the polarizing plate 1 passes through the suction hole 203a, the polarizing plate 1 is peeled off from the support body 203 and tries to contact the surface of the liquid crystal panel 2, but due to the gas pressure of the nozzle 204,
The contact between the polarizing plate 1 and the liquid crystal panel 2 is avoided, and the polarizing plate 1 is attached to the liquid crystal panel 2 without introducing air bubbles into the surface of the liquid crystal panel 2.

On the other hand, a polarizing plate sticking apparatus described in Japanese Patent Application Laid-Open No. H11-174228 has been proposed for the purpose of suppressing the force acting on the liquid crystal panel and the polarizing plate and stabilizing and improving the quality. .

FIG. 26 shows the polarizing plate sticking device, in which a first stage 211 for holding the liquid crystal panel 2 is arranged above and a second stage 214 for holding the polarizing plate 1 is arranged below. The first stage 211 is movable in the direction B, and the second stage 214 is swingable in the vertical direction.

A sticking mechanism 215 is provided below the moving area of the first stage 211, and the sticking mechanism 215 is moved by a pulse motor 217, a pair of cylinders 219 which are moved up and down by driving the pulse motor 217, And a pressure roller 223 for bringing the polarizing plate 1 into pressure contact with the liquid crystal panel 2.

Next, the operation of the polarizing plate sticking apparatus having the above configuration will be described with reference to FIG.

The liquid crystal panel 2 positioned on the first stage 211 is held by the second stage 214 with the polarizing plate 1 held by vacuum suction, and the separate film of the polarizing plate 1 is peeled off to expose the adhesive surface.

Next, the pulse motor 213 is driven to move the first stage 211 from the origin position to the working position, and the second stage 214 is inclined to the upper sticking position. When the second stage 214 is tilted, the pulse motor 217 is driven to raise the sticking roller 223 to the optimum position, and the plurality of cylinders 219 are operated to raise the sticking roller 223 to the sticking position. At the front end, the sticking roller 2 is attached to the front end of the protruding polarizing plate 1.
23 is pressed and attached.

The front end of the polarizing plate 1 is connected to the liquid crystal panel 2.
When the sticking reference position is secured, the vacuum suction mechanism of the second stage 214 is stopped and the polarizing plate 1 is set in a free state, and the first stage 211 is moved back to the origin and returned. Sticking roller 2 that rotates with
The polarizing plate 1 is appropriately affixed to the entire surface of the liquid crystal panel 2 via 23.

[0014]

However, the above-mentioned conventional polarizing plate sticking apparatus has a problem that air bubbles may remain between the liquid crystal panel and the polarizing plate when the polarizing plate is stuck to the liquid crystal panel. Was.

The reason is that the support of the polarizing plate is located above the liquid crystal panel and the polarizing plate must be sucked and held until the sticking operation is completed. Air bubbles are generated by arriving first. In particular, this phenomenon is likely to occur as the size of the polarizing plate increases.

Further, a polarizing plate having a warp or distortion in a no-load state is adhered while regulating its position by an attaching roller. appear. Although the polarizing plate can be held flat when the polarizing plate is supported, the flat position cannot be maintained due to the polarizing plate falling out of the adsorption area during sticking, and air bubbles may be generated.

As a measure for preventing the polarizing plate from hanging out of the adsorption area, in the polarizing plate sticking apparatus described in Japanese Patent Application Laid-Open No. 9-146059, gas is blown out from the nozzle 204. However, in the case of one location, the sagging of the polarizing plate cannot be covered in a wide range. Further, when the nozzles 204 are arranged at many positions, turbulence is generated by the gas blown out from each nozzle 204, and the gas pressure causes the polarizing plate 1 in the middle of sticking.
May fall.

On the other hand, in the polarizing plate sticking apparatus described in JP-A-11-174228, the polarizing plate 1 is disposed below the liquid crystal panel 2 to prevent the polarizing plate 1 from sagging. Since the holding of 1 was not performed, the warpage of the polarizing plate 1 caused the first attachment to the liquid crystal panel 2 and the generation of bubbles could not be prevented.

Further, in the above-mentioned conventional polarizing plate sticking apparatus, as a second problem, when sticking the polarizing plate to the liquid crystal panel, there is a problem that dust may be mixed between the liquid crystal panel and the polarizing plate. was there.

The reason is that, in the polarizing plate sticking apparatus described in Japanese Patent Application Laid-Open No. 9-146059, floating dust is entrained by gas blown out from the nozzle 204, and the polarizing plate 1 and the liquid crystal panel 2 There was a risk that garbage would be mixed in between.

In the polarizing plate sticking apparatus described in JP-A-11-174228, since the polarizing plate 1 is arranged so that the glue surface of the polarizing plate 1 faces upward, the first stage 2
The dust generated in step 11 adheres to the glue surface of the polarizing plate, and the polarizing plate 1
And liquid crystal panel 2.

Further, in the above-mentioned conventional polarizing plate sticking apparatus, as a third problem, when the polarizing plate is stuck on the liquid crystal panel, the surface of the polarizing plate may be damaged.

The reason is that, in the polarizing plate sticking apparatus described in JP-A-9-146059, the polarizing plate 1 is
3 is attached while adsorbing, the polarizing plate 1
Slip occurs between the substrate 203 and the support 203, which causes damage to the surface of the polarizing plate 1, and the generated scratch may hinder display inspection in a later process.

In view of the above, the present invention has been made in view of the above-mentioned problems of the conventional polarizing plate sticking apparatus, and prevents air bubbles from being trapped between the liquid crystal panel and the polarizing plate, thereby reducing the surface of the polarizing plate. It is an object of the present invention to provide a sticking method and a sticking device which do not damage the surface.

Another object of the present invention is to provide a sticking apparatus capable of continuously feeding, peeling and sticking a polarizing plate, and automatically sticking a polarizing plate on one or both sides. .

[0026]

According to one aspect of the present invention, there is provided a method of attaching a polarizing plate having an adhesive layer to a liquid crystal panel, wherein the polarizing plate of the liquid crystal panel is attached. By arranging a screen in parallel to the surface to be drawn, and by suctioning through the screen, by holding the polarizing plate while facing the surface having the adhesive layer to the liquid crystal panel, by pressing the screen An end of the surface of the polarizing plate having the adhesive layer is pressed against the liquid crystal panel, and the screen is brought into contact with the surface of the screen opposite to the side holding the polarizing plate by a roller that can contact the liquid crystal panel. The roller is moved from the one end to the other end of the polarizing plate while being pressed, so that the one end to the other end of the polarizing plate is attached to the liquid crystal panel. It is characterized in.

According to a second aspect of the present invention, in the method of attaching a polarizing plate according to the first aspect, a plurality of the liquid crystal panels are arranged on the screen, and the same number of the polarizing plates as the number of the liquid crystal panels are provided on the liquid crystal panel. By holding the screen opposingly and pressing the screen, one end of the surface of the polarizing plate having the adhesive layer of one of the polarizing plates is pressed against the liquid crystal panel, and the roller is used to press the screen. By moving the roller from the one end of one of the polarizing plates to the other polarizing plate while pressing against the liquid crystal panel side, all of the plurality of polarizing plates are moved to the plurality of liquid crystal panels. It is characterized in that it is attached to

The third aspect of the present invention is the first or second aspect.
In the polarizing plate adhering method described above, the screen has a thickness of 0.05 to 0.3 mm and a mesh number of 80.
In the range of ~ 140 / cm, antistatic treatment is applied, and the area other than the area where the polarizing plate is attracted is lined, and is provided on the screen frame.

According to a fourth aspect of the present invention, there is provided a polarizing plate sticking apparatus for sticking a polarizing plate having an adhesive layer to a liquid crystal panel, wherein the polarizing plate sticking device is arranged parallel to a surface of the liquid crystal panel to which the polarizing plate is stuck. A screen, suction means for holding the polarizing plate while the surface having the adhesive layer facing the liquid crystal panel via the screen, and one end of the surface of the polarizing plate having the adhesive layer via the screen. Pressing means for pressing against the liquid crystal panel, and a roller which is provided so as to be able to abut on a surface of the screen opposite to the side holding the polarizing plate, and is movable while pressing the screen against the liquid crystal panel. It is characterized by having.

According to a fifth aspect of the present invention, in the polarizing plate sticking apparatus according to the fourth aspect, the screen has a thickness of 0.1 mm.
Within the range of 0.5 to 0.3 mm, the number of meshes is 80 to 140
/ Cm, an antistatic treatment is applied, and a seam is applied outside the polarizing plate suction area.

The invention according to claim 6 is the invention according to claim 4 or 5.
The polarizing plate sticking apparatus according to the above, further, the liquid crystal panel is held on a table, the feeding position of the liquid crystal panel, the positioning position, a transport mechanism unit that transports the liquid crystal panel to each position of the polarizing plate sticking position, A positioning mechanism for sandwiching and positioning the liquid crystal panel on a table with a pin having a pulse-driven opening / closing mechanism, and a polarizing plate supply mechanism for transporting the stacked polarizing plates one by one to a polarizing plate positioning mechanism. A polarizing plate positioning mechanism for positioning the supplied polarizing plate by sandwiching the pin with a pin having a pulse drive opening / closing mechanism, and holding the positioned polarizing plate by a box for sucking through the screen and bonding the polarizing plate. And a sticking mechanism that moves to the sticking position of the liquid crystal panel after the separator stuck on the surface is peeled by the peeling mechanism. The features.

According to a seventh aspect of the present invention, there is provided the polarizing plate sticking device according to the sixth aspect, further comprising a panel supply mechanism for putting the liquid crystal panel into the polarizing plate sticking device, and a polarizing plate sticking device. Two polarizing plate adhering devices each including a reversing mechanism for holding and reversing the completed liquid crystal panel by vacuum suction and reversing the liquid crystal panel are arranged in series.

According to an eighth aspect of the present invention, in the polarizing plate sticking apparatus according to any one of the fourth to seventh aspects, the alignment of the liquid crystal panel and the corners of the polarizing plate are recognized by respective image processing devices. The polarizing plate may be attached to the liquid crystal panel while correcting the position at which the polarizing plate is attached to the liquid crystal panel.

According to the first or fourth aspect of the present invention, since the polarizing plate is completely sucked and held by the screen from the start to the end of the application of the polarizing plate, the polarizing plate adheres to the screen, and the polarizing plate adheres to the screen. The polarizing plate can be stuck to the liquid crystal panel without generating bubbles since the polarizing plate does not drop during the attachment and is not affected by warpage or distortion of the polarizing plate itself.

Further, since one end of the surface of the polarizing plate having the adhesive layer is pressed against the liquid crystal panel, it is possible to prevent the screen from returning after the roller is moved, so that there is no leakage of suction.
Thereby, the polarizing plate can be stuck to the liquid crystal panel while being securely held, and falling during sticking of the polarizing plate can be reliably prevented.

Further, since the screen is interposed between the polarizing plate and the sticking roller, the polarizing plate can be used without causing scratches on the surface of the polarizing plate, such as dents caused by dust attached to the sticking roller. Can be pasted.

According to the second aspect of the present invention, a plurality of polarizing plates can be sequentially attached to the liquid crystal panel by one attaching operation, so that productivity is improved.

According to the third or fifth aspect of the present invention, since the screen for suction-holding the polarizing plate is subjected to antistatic processing, the insulation resistance can be made smaller than that of the conductive roller, and the static electricity in the liquid crystal panel can be reduced. Can be prevented, and each product can be easily handled by replacing the screen frame.

According to the sixth aspect of the present invention, the transport mechanism for holding and transporting the liquid crystal panel and the sticking mechanism for holding and transporting the polarizing plate are each provided with a pulse-type moving means, so that the positional accuracy of the sticking position of the polarizing plate is provided. In addition, since the attaching mechanism has an up-down mechanism, the positional relationship between the liquid crystal panel and the polarizing plate can be kept constant even if the thickness of the polarizing plate changes. It can be attached to a liquid crystal panel. In addition, since the mechanism required for the sticking operation is arranged in the box, dust generated in the mechanism is always sucked, and it is possible to prevent dust from being mixed between the polarizing plate and the liquid crystal panel.

According to the seventh aspect of the present invention, two polarizing plate sticking devices provided with a panel supply mechanism portion and a reversing mechanism portion are continuously arranged, so that the polarizing plate is automatically and continuously provided on both sides of the liquid crystal panel. Can be attached, and productivity is improved.

According to the eighth aspect of the present invention, the respective positions can be recognized by the image processing device after the positioning of the liquid crystal panel and the polarizing plate, and the sticking accuracy is further improved.

[0042]

Next, a specific example of an embodiment of a polarizing plate sticking apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a double-sided sticking device as one embodiment of the polarizing plate sticking device according to the present invention, and FIG. 2 is a perspective view of a portion A in FIG.

As shown in both figures, the polarizing plate sticking apparatus transports the input liquid crystal panel 2 to the panel supply position of the transport mechanism 5 and the liquid crystal panel 2 is transported by the panel supply mechanism 3. Transporting the liquid crystal panel 2 to the positioning position, the attaching position of the polarizing plate 1 and the reversing position, and the liquid crystal panel 2 transported to the positioning position by the transporting mechanism 5 in the X and Y directions. A positioning mechanism unit 4 for carrying out the operation, a reversing mechanism unit 6 for holding the liquid crystal panel 2 conveyed to the reversal position by the conveyance mechanism unit 5 by vacuum suction, reversing it in the front and back directions, and carrying it out to the next step by conveyance, and a stacked polarization. A polarizing plate supply mechanism unit 7 that transports the plates 1 one by one to a polarizing plate positioning mechanism unit 8, and a polarizing plate 1 transported from the polarizing plate supply mechanism unit 7 is opened and closed by a pulse drive in the X and Y directions. A polarizing plate positioning mechanism 8 for positioning, a sticking mechanism 9 for sucking and holding the polarizing plate 1 positioned by the polarizing plate positioning mechanism 8, and an illustration affixed to the bonding surface of the polarizing plate 1 held by the sticking mechanism 9 And a separating mechanism 10 for separating the separator not to be used using the mechanism described in JP-A-11-174229.
After the polarizing plate 1 peeled off by the above is positioned by the transport mechanism 5, it is attached to one side of the liquid crystal panel 2 transported to the sticking position, and the liquid crystal panel 2 is arranged by arranging the above mechanism in the same manner as described above. The polarizing plate 1 is also attached to the other surface.

Next, each mechanism will be described in detail with reference to FIGS.

FIG. 3 is a perspective view showing the panel supply mechanism 3, which moves the liquid crystal panel 2 in the direction of arrow C by rotating while contacting the lower surface of the liquid crystal panel 2. Rollers 20 and shafts 21a and 21 supported by brackets 27 to enable the rollers 20 to rotate.
b, pulleys 22a and 22b fixed to the ends of the shafts 21a and 21b, a motor 25 fixed to the bracket 27 and serving as a driving source for conveyance, a pulley 22a fixed to the end of the motor 25, and a motor 25 Rotation of the pulley 22b
A belt 24 provided between the pulleys 22a and 22b for transmitting the information to the auxiliary pulley 23 rotatably fixed to a bracket 27 for increasing a contact angle between the pulleys 22a and 22b and the belt 24; Sensors 26a and 26b are installed at the loading and unloading positions of the liquid crystal panel 2 of the panel supply mechanism unit 3, and the cover 28 is installed at a place where the belt 24 runs and fixed to the bracket 27.
And the rollers 20 are installed so as to face each other. Further, by the structure in which the shaft 21a transmits the rotational force of the motor 25 to the opposing side, the opposing rollers 20 are configured to rotate in synchronization with the front rollers 20.

FIG. 4 is a perspective view showing the positioning mechanism 4, which is mounted on the liquid crystal panel 2 transported to the positioning position by the transport mechanism 5 (FIG. 2).
Is provided for positioning in the X and Y directions by the rollers 30a and 30b.

The positioning mechanism 4 includes a roller 30a rotatably supported, a first arm 31a having two rollers 30a, a second arm 31b having one roller 30a, and a second arm 31b. A guide table 32 fixed to the guide table 32 and movable in the Y direction; a stopper 35 for regulating the forward direction of the guide table 32; spring shafts 34a and 34b fixed to the fixed and movable sides of the guide table 32; 34a, 3
4b, a screw shaft 37 having the same pitch and left and right threads, and a screw shaft 3
7, a first screw plate 36a screwed to the left screw portion of the screw shaft 37 to fix the first arm 31a; a second screw plate 36b screwed to the right screw portion of the screw shaft 37 to fix the guide table 32; A slide guide 42 for guiding the plate 36a and the second screw plate 36b, and screw supports 38a and 3 for rotatably supporting the screw shaft 37.
8b, a pulse motor 41 for applying a rotational force to the screw shaft 37, a coupling 39 for connecting the screw shaft 37 and the pulse motor 41, a motor plate 40 for fixedly supporting the pulse motor 41, and a motor plate 40.
, A base 43 for fixing the screw guides 38a, 38b and the slide guide 42, a bracket 44 for fixing and supporting the base 43, an actuator 45 attached to the end of the roller 30b and moving up and down, and a slider 46 for fixing the actuator 45 and A third arm 31c attached to the
An air cylinder driven slider 46 that moves the roller 30b in the X direction and operates by pressure control (not shown);
A slider bracket 47 for fixing the slider 46,
Image processing device 48 fixed to first screw plate 36a
It is composed of Note that the image processing device 48 is fixed to be shifted in the Y direction from the vertical line of the two rollers 30a attached to the first arm 31a.

FIGS. 5 and 6 are a perspective view and a front view, respectively, showing the transport mechanism 5, which transports the liquid crystal panel 2 to the discharge position (FIG. 3) of the panel supply mechanism 3 (FIG. 3). It is provided to transport the liquid crystal panel 2 from a supply position (in FIG. 5, a supply position) to a positioning position for positioning the liquid crystal panel 2, a bonding position for attaching the polarizing plate 1, and a reversing position of the reversing mechanism 6.

The transport mechanism 5 includes a pad 51 for vacuum-sucking the liquid crystal panel 2, a shaft 52 having the pad 51 fixed to an end thereof and having a suction hole 50a, and a table 50 as a guide for vertically moving the shaft 52. A fixed linear guide 53, a plate 54 for fixing shafts 52 arranged at many locations, an actuator 55 fixed to the table 50 for moving the shaft 52 connected to the plate 54 in the vertical direction, A table 50 for fixing a reference plate 56 serving as a reference in the X direction (see FIG. 1) when positioning the panel 2, and holding the positioned liquid crystal panel 2 by suction holes 50a;
Pulse-driven slider 5 for transporting liquid crystal panel 2
8 and a column 5 for connecting the slider 58 and the table 50
And an image processing device 59 fixed to the table 50 and having the liquid crystal panel 2 disposed on a tangent line in contact with the reference plate 56.
The table 50 and the column 57 are fixed in an insulated state.

FIGS. 7 and 8 are a perspective view and a sectional view of a part D, respectively, showing the reversing mechanism 6. The reversing mechanism 6 is moved by the transport mechanism 5 (FIG. 5). The liquid crystal panel 2 set at (the reversing position of the transport mechanism unit 5) is transported by the roller transport mechanism.

The reversing mechanism 6 contacts the lower surface of the liquid crystal panel 2 and rotates in the direction of arrow E to rotate the liquid crystal panel 2.
71, shafts 72a, 72b rotatably supporting the rollers 71 on the bracket 78, and pulleys 73a, 7 fixed to the ends of the shafts 72a, 72b.
3b, a motor 76 as a drive source for conveyance fixed to the bracket 78, a pulley 73a fixed to an end of the motor 76, and a pulley 73a, 73b for transmitting rotation of the motor 76 to the pulley 73b. , An auxiliary pulley 74 rotatably fixed to a bracket 78 for increasing the contact angle between the pulleys 73a and 73b and the belt 75, and a liquid crystal installed at the input and output positions of the liquid crystal panel 2. A detection sensor 77a for detecting the panel 2,
77b and a cover 79 fixed to a bracket 78 at a position where the belt 75 runs, and the rollers 71 are installed at positions facing each other. The shaft 72a is configured to transmit the rotational force of the motor 76 to the opposing side, and the opposing rollers 71 are configured to rotate in synchronization with the rollers 71 on the near side.

Further, the reversing mechanism 6 is provided with a pad 60 for sucking and holding the liquid crystal panel 2 transported to the discharge position.
And a reversing arm 61 having a pad 60 connected and fixed to an end of the suction hole 61a, a rotating shaft 62 connected and fixed to an end of the suction hole 61a of the reversing arm 61, and rotatably supporting the rotating shaft 62. Between the housing 63, the pulley 64a fixed to the end of the rotating shaft 62, the rotation actuator 65 as a reversal drive source, the pulley 64b fixed to the end of the rotation actuator 65, and the pulleys 64a, 64b. A built-in belt 66, an arm 67 for fixing the housing 63 and the rotation actuator 65, a slider 68 for vertically moving the arm 67,
A bracket 69 for fixing the slider 68 and an arm 67
And a cover 70 fixed to the cover 70 and covering the reversing mechanism. The rotary shaft 62 is provided with a suction hole 62a for suction, an end of which is connected to the suction hole 61a of the reversing arm 61, and a connecting joint extending from a vacuum pump (not shown) at the other end. The liquid crystal panel 2 is fixed by the pad 60 so that the liquid crystal panel 2 can be held by suction.

FIG. 9 is a side view showing the polarizing plate supply mechanism 7. FIG. 10 is a sectional view taken along line FF of FIG.
FIG. 11 is a view taken along line GG of FIG. 10, wherein the polarizing plate supply mechanism unit 7 is provided to transport the stacked polarizing plates 1 one by one to the next step (the polarizing plate positioning mechanism unit 8). Can be

The polarizing plate supply mechanism 7 includes a guide shaft 85 for guiding the stacked polarizing plates 1 so as not to be inclined.
a, 85b, a moving block 86 for fixing the guide shaft 85b, a linear guide 88 for guiding the moving direction of the moving block 86, a driven pulley 90b rotatably supported on an upper surface of a base plate 98, and a lower surface of the base plate 98 And a drive pulley 90a fixed to an end of the pulse motor 91.
A belt 92 provided between the driving pulley 90a and the driven pulley 90b, and a belt holder 89 connecting the belt 92 and the moving block 86 so that the moving block 86 follows the movement of the belt 92. Is provided.

The guide shaft 85b and the moving block 8
6, a linear guide 88 and a belt holder 89 are disposed so as to face each other, and a guide shaft 85b is opened and closed by a belt 92 that is moved by the rotation of a pulse motor 91. A fixed block 87 fixed so as not to move the shaft 85a is fixed to the base plate 98.

The polarizing plate supply mechanism 7 further includes a table 96 for receiving the stacked polarizing plates 1, a table shaft 94 fixed to the table 96 and moving up and down, and a lower surface of the base plate 96 for guiding the table shaft 94. Guide 93 fixed to the table and the table shaft 9
4, a linear motor 97 fixed to the first plate 95, and a linear motor 97 as a drive source for vertically moving the table 96.
As a result, the screw shaft 97a moves straight, and the end of the screw shaft 97a is fixed to the base plate 98. By driving the linear motor 97, the table 96 moves up and down along the screw shaft 97a.

The polarizing plate supply mechanism 7 includes a pad 102 for holding the upper surface of the stacked polarizing plates 1 by suction, and a pad shaft fixed to the end of the pad 102 and having a suction hole (not shown) formed therein. 103, and the shaft for putting 1
A joint of a vacuum pump (not shown) is fixed to the other end of the pad 03, and is connected to the pad 102 by a suction hole of the pad shaft 103.

Further, a second plate 105 fixed to a joint (not shown) fixed to an end of the putt shaft 103 and connecting the putt shafts 103 (two places in this embodiment) installed at many places. A first linear bush 104 as a guide for vertically moving the pad shaft 103, and a pad actuator 10 as a driving source.
6 are fixed to the head bracket 112 and arranged to face left and right.

A second linear bush 108 is disposed with the pad shaft 103 serving as a guide shaft, and a pressing plate 107 is fixed to an end of the second linear bush 108.
A holding plate actuator 109 for moving the 07 up and down is fixed to the head bracket 112.

Further, a detection sensor 110 for detecting the polarizing plate 1 that is attracted and held by the pad 102 lowered by the pad actuator 106, a sensor bracket 111 fixed to the head bracket 112 for holding the detection sensor 110, One linear bush 104, a pad actuator 106, a head bracket 112 for fixing the holding plate actuator 109 and the sensor bracket 111, a slider Z113 for vertically moving the head bracket 112, and a horizontal movement of the slider Z113 for transport to the next step. The slider X114, the bracket 115 for fixing the slider X114, and the height at which the stacked polarizing plates 1 are attracted by the pad 102 (FIG. 10)
A nozzle 100 that blows clean air in the horizontal direction at the point L (indicated by) and a nozzle bracket 101 that supports the nozzle 100 and is fixed to the base plate 98 are provided.

FIG. 12 is a side view showing the polarizing plate positioning mechanism 8, and FIG. 13 is a sectional view taken along line HH of FIG.
FIG. 14 is a cross-sectional view taken along the line II of FIG. 13. The polarizing plate positioning mechanism 8 positions the polarizing plate 1 conveyed by the polarizing plate supply mechanism 7 (FIG. 9), and performs the next process after suction and holding. Is provided for transport to

The polarizing plate positioning mechanism 8 includes pins 120a, 120b, 1 for positioning the polarizing plate 1 in the X and Y directions.
20c, a guide table 121 fixed to the pin 120a and movable in one direction, a stopper 122 for regulating the forward direction of the guide table 121, and a guide table 121.
Spring shaft 12 fixed to the fixed side and the moving side of the
3a, 123b and spring shafts 123a, 12
3b and a pin 120a
Are arranged at a number of places (two places in this embodiment) on a straight line, and a slide first plate 125 for fixing the guide table 121 and the stopper 122, and a slide second plate 1 for fixing the pin 120b arranged opposite to the pin 120a.
26, a first screw shaft 127a having left and right threads cut at the same pitch, a first screw plate 128a screwed to a right screw portion of the first screw shaft 127a and fixed to the slide first plate 125; Screw shaft 127a
The second screw plate 128b fixed to the slide second plate 126 by being screwed to the left screw portion of the, the linear guide 129 for guiding the slide first plate 125 and the slide second plate 126, and the second screw shaft 127b can be rotated. , A pulley 131b fixed to an end of the second screw shaft 127b, a pulse motor 132a that is a driving source for rotation of the first screw shaft 127a, and an end of the pulse motor 132a. And a pulley 131a fixed to the
The rotation of the pulse motor 132a is transmitted to the first screw shaft 127a by the belt 133 provided between the first shaft 31b and the pin 120a by the rotation of the pulse motor 132a.
An opening / closing mechanism in which the pin 120b moves in the opposite direction at the same distance as that of the.

The parts (pin 120a, guide table 121, stopper 122,
Spring shafts 123a, 123b, spring 1
24, the slide first plate 125, the first screw plate 128a, the screw support 130, and the linear guide 129) are arranged orthogonally, and the second screw shaft 127b screwed to the screw portion of the first screw plate 128a has a screw. The pulley 131b is fixed to the end of the second screw shaft 127b, and the pulley 131b is fixed to the end of the pulse motor 132b.
The belt 133 is hung between 131b and the pulse motor 13
The mechanism moved by 2b and the pin 120c arranged at a position facing the pin 120a are fixed by a fixing block 134.

Further, the polarizing plate positioning mechanism 8 includes a table 136 for holding the polarizing plate 1 conveyed by the polarizing plate supply mechanism 7 (FIG. 9) by suction holes (not shown), and a table 1.
A guide shaft 137 fixed to a plurality of locations (four locations in this embodiment), a linear bush 138 that guides the guide shaft 137 in the vertical direction, and a table actuator 139 that is a driving source for the vertical movement of the table 136 , The linear guide 129, the screw support 13
0, a pulse base motor 132a, 132b, a slide base 135 for fixing the fixed block 134 and the table actuator 139, and a cover 14 for covering these components.
0, and a slider 141 for moving the slide base 135 in one direction.

FIG. 15 is a perspective view showing the attaching mechanism 9, FIG. 16 is a sectional view taken along line JJ of FIG. 15, and FIG.
FIG. 16 is a view taken in the direction of arrow K in FIG. 15, showing a state in which the polarizing plate 1 is held.

The attaching mechanism 9 is provided with a polarizing plate positioning mechanism 8.
After the polarizing plate 1 positioned in (FIG. 14) is sucked and held, the separator attached to the polarizing plate 1 is peeled off, and then transported to the attaching position of the transport mechanism 5, and the polarizing plate 1 is attached to the liquid crystal panel 2. Provided for attaching.

The attaching mechanism 9 includes a screen frame 150 having a screen 150a having air permeability and covering the area other than the polarizing plate 1 holding area, and a vacuum generator (vacuum pump, ring blow Vacuum suction from the suction duct 158 by the
A box 157 that holds the polarizing plate 1 through the a, a roller 151 that is disposed in the box 157, and that arranges the polarizing plate 1 from above the screen 150a in parallel to the attachment surface of the liquid crystal panel 2, and the roller 151 can rotate. , A roller actuator 153 for moving the roller 151 up and down, a roller slider 154 for horizontally moving the roller 151 from one end to the other end of the polarizing plate 1, and the roller 151 pressing the screen 150a. A push bar 155 for pushing the screen 150a to the same position as the position, a push bar actuator 156 for vertically moving the push bar 155, a first bracket 159 for fixing the box 157, and a first bracket 15
9 for moving the box 157 up and down through the slider 9
60 and a position where the slider Z160 is fixed and the polarizing plate 1 is attached to the liquid crystal panel 2 (table 5 of the transport mechanism 5).
0), and a slider Y161 that moves to
161 is fixed to the second bracket 162. As shown in FIG. 17, in a state where the polarizing plate 1 is held, the suction area of the screen 150a has a dimension of the outer dimension of the polarizing plate 1 + L, and other areas are covered.

FIG. 18 is a front view showing the peeling mechanism section 10. The peeling mechanism section 10 separates the separator of the polarizing plate 1 sucked and held by the sticking mechanism section 9 (FIG. 15).
It is provided for peeling by the mechanism described in JP-A-174229.

The peeling mechanism 10 includes a drive mechanism for the peeling tape 165 for bonding the separator of the polarizing plate 1, a tape supply means 166 above the drive mechanism, and a tape recovery means 167 below the drive mechanism.
And travels between the tape supply means 166 and the tape collection means 167.

Further, the peeling mechanism section 10 is
Has a pushing slider 168 that moves in parallel with the screen 150a, which is a holding surface of the polarizing plate 1, and a support bracket 169 is fixed above the pushing slider 168.
Numeral 0 is swingably supported about a shaft 170a, and a sub-arm 171 is supported at a lower portion so as to be swingable about a shaft 171a. Tip of main arm 170 and sub arm 1
The distal end of 71 is swingably supported by a shaft 170b and a shaft 171b with respect to the frame 173 of the peeling tape guiding means 172, respectively.

FIG. 19 is an enlarged front view showing the peeling tape guiding means 172. The upper end of the frame 173 has a support arm 174 oriented in a direction opposite to the main arm 170. The end side is swingably supported about a shaft 174a, and a fixed roller 175 is rotatably supported on the shaft 174a.

A swinging roller 176 is rotatably supported on the tip end side of the support arm 174 about a shaft 176a, and a spring 177 is hung between a spring hook 174b of the support arm 174 and the frame 173. The swing-side roller 176 receives the restoring force of the spring 177 and is urged to rotate clockwise in FIG. 19 around the shaft 174a. Peeling tape 165
Is fed from the guide roller 166a provided below the tape supply means 166 (FIG. 18) to the tape collecting means 167 via the swinging roller 176, and between the guide roller 166a and the swinging roller 176. , And the adhesive surface faces upward.

Next, the operation of the polarizing plate sticking apparatus having the above configuration will be described in detail with reference to FIGS.

In FIG. 3, when the liquid crystal panel 2 conveyed with the polarizing plate 1 attached face up from the previous step is detected by the detection sensor 26a of the panel supply mechanism 3, the motor 2
When the roller 20 is driven by the drive of the roller 5, the roller 20 is conveyed in the direction of arrow C, and when the liquid crystal panel 2 is detected by the detection sensor 26b, the motor 25 is stopped.

In FIG. 5, the stop position is the same position as the supply position of the transport mechanism 5, so that the leading end of the liquid crystal panel 2 (the leading end in the transport direction) has a gap with respect to the reference plate 56. The liquid crystal panel 2 stops, and the pad 51 rises while being vacuum-sucked by the driving of the actuator 55 to lift and hold the liquid crystal panel 2 on the rollers 20.
In this state, after being conveyed to the positioning position by the slider 58, the suction is turned off, the pad 51 is lowered, and the liquid crystal panel 2 is moved on the table 50.

Referring to FIG. 4, the liquid crystal panel 2 on the table 50 of the transport mechanism 5 (FIG.
0a, but the first arm 3 that moves inward (toward the liquid crystal panel 2) by driving the pulse motor 41.
1a and a roller 30 attached to the second arm 31b.
When the pulse motor 41 is driven such that the distance between the two is smaller than the dimension of the liquid crystal panel 2 in the Y direction, the arm 31b is retracted by the difference, and the spring 33 always moves the liquid crystal panel 2 toward the opposite arm 31a. Is pressed.

In this state, the roller 30b is lowered by driving the actuator 45, and is moved by the slider 46 in the X direction. The liquid crystal panel 2 is sandwiched between the reference plate 56 (FIG. 5) and the roller 30b while being guided by the roller 30a, and the positioning in the X and Y directions is completed.

Here, the thrust of the slider 46 and the spring 33 in the direction of pressing the liquid crystal panel is always controlled to be 2 to 3 kg or less, and the rollers 30a and 30b are controlled to reduce cracking and chipping of the liquid crystal panel 2. The material was a resin (Delrin, peak material, etc.), and the structure was such that the contact speed with the liquid crystal panel could be controlled.

When the positioning of the liquid crystal panel 2 is completed, the vacuum is maintained by the suction holes 50a of the table 50 in FIG. 5, and the rollers 30a and 30b of the positioning mechanism 4 return to their original positions. The return position of the roller 30a is a position where the image processing device 48 attached to the first screw plate 36a is on an alignment (not shown) of the liquid crystal panel 2.

The liquid crystal panel 2 is conveyed to the sticking position by the slider 58 shown in FIG.
Is temporarily stopped below the image processing device 48, and a difference between the liquid crystal panel 2 and an alignment position (not shown) registered in advance is captured by the image processing device.

In FIGS. 9 and 10, the polarizing plate 1 stacked on the table of the polarizing plate supply mechanism 7 has an adhesive surface (separator attaching surface) facing down. A pad actuator 106 is provided above the stacked polarizing plates 1.
As a result, the pad 102 descends, and in this state, the head bracket 112 descends. Pat 102 is L in FIG.
The polarizing plate 1 descends to the point height and is stacked in this state.
Rise by the driving of the linear motor 97. Polarizing plate 1
When the height of the uppermost stage becomes the height of the point L in FIG. 10, the polarizing plate 1 is detected by the detection sensor 110, the linear motor 97 is stopped, and the pad 102 sucks the polarizing plate 1.

Thereafter, the stacked polarizing plates 1 are lowered to the original position, and the pads 102 arranged on the left and right are moved up and down by the pad actuator 106 so that the attracted polarizing plates 1 are distorted. To work,
During this operation, air is always blown from the nozzle 100 to prevent two or more polarizing plates 1 from being held in an overlapping manner.

The distance between the guide shafts 85a and 85b (the distance in the X and Y directions) is set to the distance of the outer shape of the polarizing plate 1 cut to an appropriate dimension + α. Uses a difficult resin system. The polarizing plate 1 sucked and held by the pad 102 is moved to the slider Z113 and the slider X.
After being raised by 114, it is moved to the position above the polarizing plate positioning portion, and the polarizing plate 1 is lowered to make the table 136 (FIG. 12).
To FIG. 14).

In FIGS. 9, 10 and 12 to 14, after the suction of the pad 102 is cut off, the pad 102 is raised and the holding plate 107 is moved to the holding plate actuator 10.
9, the distance between the lower surface of the holding plate 107 and the upper surface of the table 136 is set to be 2 to 3 mm, and the positioning of the polarizing plate 1 in the X and Y directions is performed by the pins 120a in the gap. , 120b.

The distance between pins 120a and 120b, pin 1
The distance between the pins 120a and 120c is set so that the distance between the pins 120a and 120c is smaller than the outer dimension of the polarizing plate 1 by -α.
When the pin 120a is moved, the guide table 121 for fixing the pin 120a after the pin 120a contacts the polarizing plate 1 is retracted, and the polarizing plate 1 is always moved to the pin 12 by the spring 124.
0b and 120c. At this time, the pressing force generated by the spring 124 is 100 to 300 g.
/ 1 location.

When the positioning of the polarizing plate 1 is completed, FIG.
At, the table 136 is raised by the table actuator 139, and the polarizing plate 1 is
7 (FIGS. 9 and 10) and the upper surface of the table 136. After the polarizing plate 1 is sucked and held by the suction holes (not shown) of the table 136, the head bracket 112 of the polarizing plate supply mechanism 7 is raised and returned to the original position, and the table 136 rises with the rising of the head bracket 112. After stopping at a position higher than the upper ends of the pins 120a, 120b, and 120c, the polarizing plate 1 whose positioning is completed by the slider 141 is conveyed to a position below the attaching mechanism 9.

In FIG. 15, the screen 150a is lowered by the slider Z160 so as to contact the polarizing plate 1. In this state, the box 157 is sucked while the suction of the table 136 (FIG. 13) is turned off, and the screen 1 is sucked.
The polarizing plate 1 is sucked and held through the box 50a.
Is returned to the original height, and the polarizing plate positioning mechanism 8 is also returned to the original position.

Screen 1 of Box 157 (FIG. 15)
The polarizing plate 1 held on the surface 50a is installed above an area where the peeling tape guiding means 172 of the peeling mechanism 10 moves in FIG. The extruding slider 168 causes the peeling tape guiding means 172 to move leftward in the figure, and from the position shown by the solid line to the position shown by the imaginary line. After the movement, the main arm 170 is swung clockwise in FIG. 18 about the axis 170a, and the swinging roller 176 covers the surface of the polarizing plate 1 held on the screen surface of the attaching mechanism unit 9. Is pressed to the end. The oscillating roller 176 includes a peeling tape 165.
Is wound, and the adhesive surface of the peeling tape 165 faces the separator of the polarizing plate 1.
5 is pressed against and adhered to the separator of the polarizing plate 1.

When the pushing slider 168 is moved in the opposite direction from this state, the peeling tape guide means 172 is provided.
However, the peeling tape 165 is wound by the tape collecting means 167 in synchronization with the movement of the peeling tape guiding means 172 so that the peeling tape 165 follows the horizontal movement to the right and moves to the tape collecting means 167. taking it.

The separator of the polarizing plate 1 adhered closely to the peeling tape 165 is gradually peeled off the polarizing plate 1 and moves in the direction of the tape collecting means 167. When the peeling tape guiding means 172 returns to the same position in FIG. 18 by the pushing slider 168, the separator of the polarizing plate 1 is completely peeled, and the polarizing plate 1 with the bonding surface down is
It is sucked and held by the box 157 of the sticking mechanism unit 9 in FIG. 15, and is moved to above the sticking position of the transport mechanism unit 5 by the slider Y161.

During the movement, it stops on the image processing device 59 of the transport mechanism 5 (FIG. 5), and the difference between the position of the corner of the polarizing plate 1 by the image processing device 59 and the position registered in the image processing device 59 in advance. Take in. After that, the positional shift amounts of the liquid crystal panel 2 and the polarizing plate 1 captured by the image processing device 48 of the positioning mechanism unit 4 and the image processing device 59 of the transport mechanism unit 5 are determined by the position at which the slider 58 of the transport mechanism unit 5 is stopped. And the correction is added to the sticking side stop position of the slider Y161 of the sticking mechanism unit 9. Thereafter, the polarizing plate 1 is lowered by the slider Z160 (FIG. 15).

FIGS. 20 to 23 show the state of attachment of the polarizing plate 1. In FIG. 20, the bonding surface of the polarizing plate 1 lowered to the dimension M is parallel to the attachment surface of the liquid crystal panel 2. Are located. The M dimension varies depending on the material of the polarizing plate 1, but is usually about 0.5 mm.

From this state, the roller 151 and the push bar 155 are driven by the roller actuator 1 as a driving source.
53, lowered by the push bar actuator 156. In FIG. 21, one end of the attachment surface of the liquid crystal panel 2 sucked and held on the table 50 of the transport mechanism 5 (FIG. 5) and one end of the adhesion surface of the polarizing plate 1 are aligned. Also,
When the push bar descends to the same height as the attaching surface of the liquid crystal panel 2 and presses the screen 150a, the screen 150a between the roller 151 and the push bar 155 has the same height as the attaching surface of the liquid crystal panel 2. Thereafter, the roller 151 is moved by the roller slider 154 in parallel with the other end of the attachment surface of the liquid crystal panel 2, and the polarizing plate 1 is constantly sucked during the operation.

FIG. 22 shows a state in which the roller 151, which is moved by the slider Y161, is in the process of attaching the polarizing plate 1, and the screen 150a after the roller 151 travels is in close contact with the attached polarizing plate 1. Therefore, there is no change from the state in which the polarizing plate 1 is sucked and held,
Suction power does not drop. Therefore, the polarizing plate 1
However, the liquid crystal panel 2 did not come first, and it was possible to attach the liquid crystal panel 2 without generating bubbles.

FIG. 23 is a view showing a state in which the attachment of the polarizing plate 1 has been completed. Thereafter, the suction of the box 157 is stopped, and the pressure in the box 157 is returned to a positive pressure by a pressure control device (not shown). After the roller 151 is raised and the push bar 155 is raised, the attaching mechanism 9 is returned to the original state, and the attaching operation is completed.

5 and 6, when the attachment of the polarizing plate 1 is completed, the suction of the table 50 of the transport mechanism unit 5 is stopped, and the pad 51 is raised while the vacuum is sucked by the driving of the actuator 55. The liquid crystal panel 2 to which the polarizing plate 1 is attached is lifted and held. In this state, the pad 51 is lowered by the slider 58 after being conveyed to the reversing position, and the liquid crystal panel 2 is moved onto the rollers 71 of the reversing mechanism 6.

In FIG. 7, the reversing arm 61 is lowered by the slider 68 with the pad 60 facing upward. In this state, the liquid crystal panel 2 that has moved up the rollers is transported by the drive of the motor 76 and stopped by the discharge-side detection sensor 77b. When the pad 60 of the reversing arm 61 is lifted by the slider 68 while attracting the pad 60, the pad 6
The liquid crystal panel 2 is attracted and held by 0, and the reversing arm 61 is reversed by the rotation actuator 65 to turn the liquid crystal panel 2 upside down.

When the reversing arm 61 is moved down by the slider 68, the liquid crystal panel 2 moves on the transport rollers 71 with the front and back reversed. After that, the reversing arm 61 is raised to take out the liquid crystal panel 2, and the polarizing plate 1 is attached to the other surface of the liquid crystal panel 2 by a mechanism arranged in the same manner.

In the above embodiment, the polarizing plate 1 is disposed above the liquid crystal panel 2 as shown in FIG.
It is also possible to arrange these in reverse. In the attaching method according to the present invention, the polarizing plate 1 can be attached to the attaching surface of the liquid crystal panel 2 without generating air bubbles, regardless of the posture. The reason is that since the polarizing plate 1 is attached while being sucked and held from the start to the end of the attachment, a change in the posture does not affect the attached state.

In FIG. 24, the polarizing plate 1 can be attached to a plurality of (four in FIG. 24) liquid crystal panels 2 arranged on the table 50. In this case, a single attachment operation (FIGS. In step 23), the polarizing plate 1 can be sequentially attached.

[0102]

As described above, according to the present invention,
A method and an apparatus for attaching a polarizing plate, which prevent air bubbles from being trapped between the liquid crystal panel and the polarizing plate and do not damage the surface of the polarizing plate, can be provided.

Further, according to the present invention, in addition to the above, it is possible to provide a sticking apparatus capable of continuously supplying, peeling and sticking a polarizing plate and automatically sticking a polarizing plate to one or both sides. .

[Brief description of the drawings]

FIG. 1 is an overall block diagram showing one embodiment of a polarizing plate sticking apparatus according to the present invention.

FIG. 2 is a perspective view of a part A in FIG.

FIG. 3 is a perspective view showing a panel supply mechanism of the polarizing plate attaching apparatus of FIG. 1;

FIG. 4 is a perspective view showing a positioning mechanism of the polarizing plate attaching apparatus of FIG. 1;

FIG. 5 is a perspective view showing a transport mechanism of the polarizing plate attaching apparatus of FIG. 1;

FIG. 6 is a front view showing the transport mechanism of FIG. 5;

FIG. 7 is a perspective view showing a reversing mechanism of the polarizing plate attaching apparatus of FIG. 1;

FIG. 8 is a sectional view of a part D in FIG. 7;

FIG. 9 is a side view showing a polarizing plate supply mechanism of the polarizing plate attaching apparatus of FIG. 1;

FIG. 10 is a sectional view taken along line FF of FIG. 9;

11 is a view taken in the direction of arrows GG in FIG. 10;

FIG. 12 is a side view showing a polarizing plate positioning mechanism of the polarizing plate attaching apparatus of FIG. 1;

FIG. 13 is a sectional view taken along line HH of FIG. 12;

14 is a sectional view taken along line II of FIG.

FIG. 15 is a perspective view showing a sticking mechanism of the polarizing plate sticking apparatus of FIG. 1;

16 is a sectional view taken along line JJ of FIG.

17 is a view as viewed in the direction of the arrow K in FIG. 15;

FIG. 18 is a front view showing a peeling mechanism of the polarizing plate attaching apparatus of FIG. 1;

FIG. 19 is an enlarged view showing a peeling tape guiding means of the polarizing plate attaching apparatus of FIG. 1;

20 is a schematic view showing a state in which a polarizing plate is attached using the polarizing plate attaching apparatus in FIG. 1;

FIG. 21 is a schematic view showing a state in which a polarizing plate is attached using the polarizing plate attaching apparatus in FIG. 1;

FIG. 22 is a schematic view showing a state in which a polarizing plate is attached using the polarizing plate attaching apparatus in FIG. 1;

FIG. 23 is a schematic diagram showing a state in which a polarizing plate is attached using the polarizing plate attaching device of FIG. 1;

FIG. 24 is a perspective view showing another embodiment of the polarizing plate sticking apparatus according to the present invention.

FIG. 25 is a front view showing an example of a conventional polarizing plate sticking apparatus.

FIG. 26 is a front view showing another example of the conventional polarizing plate sticking apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Polarizing plate 2 Liquid crystal panel 3 Panel supply mechanism part 4 Positioning mechanism part 5 Transport mechanism part 6 Inversion mechanism part 7 Polarization plate supply mechanism part 8 Polarization plate positioning mechanism part 9 Pasting mechanism part 10 Peeling mechanism part 20 Rollers 21a, 21b Shaft 22a , 22b Prey 23 Auxiliary pulley 24 Belt 25 Motor 26a, 26b Detection sensor 27 Bracket 28 Cover 30a, 30b Rollers 31a, 31b, 31c Arm 32 Guide table 33 Spring 34a, 34b Spring shaft 35 Stopper 36a First screw plate 36b Second screw Plate 37 Screw shaft 38a, 38b Screw support 39 Coupling 40 Motor plate 41 Pulse motor 42 Slide guide 43 Base 44 Bracket 45 Actuator 46 Slider 47 Slur Da bracket 48 Image processing device 50 Table 50a Suction hole 51 Pat 52 Shaft 53 Linear guide 54 Plate 55 Actuator 56 Reference plate 57 Support 58 Slider 59 Image processing device 60 Pat 61 Inverted arm 61a Suction hole 62 Rotating shaft 62a Suction hole 63 Housing 64a, 64b Prey 65 Rotating actuator 66 Belt 67 Arm 68 Slider 69 Bracket 70 Cover 71 Roller 72a, 72b Shaft 73a, 73b Prey 74 Auxiliary pulley 75 Belt 76 Motor 77a, 77b Detection sensor 78 Bracket 79 Cover 85a, 85b Guide shaft 86 Moving block 87 Fixed block 88 Linear guide 89 Belt holder 90a Drive pulley 90b Follower pulley 9 Reference Signs List 1 pulse motor 92 belt 93 Z-axis guide 94 table shaft 95 first plate 96 table 97 linear motor 97a screw shaft 98 base plate 99 cover 100 nozzle 101 nozzle bracket 102 pat 103 pat shaft 104 first linear bush 105 second plate 106 Actuator for pad 107 Press plate 108 Second linear bush 109 Actuator for press plate 110 Detection sensor 111 Sensor bracket 112 Head bracket 113 Slider Z 114 Slider X 115 Bracket 120a, 120b, 120c Pin 121 Guide table 122 Stopper 123a, 123b Spring shaft 124 Spring 125 Slide 1st play 126 Slide second plate 127a First screw shaft 127b Second screw shaft 128a First screw plate 128b Second screw plate 129 Linear guide 130 Screw support 131a, 131b Ply 132a, 132b Pulse motor 133 Belt 134 Fixed block 135 Slide base 136 Table 137 Guide shaft 138 Linear bush 139 Table actuator 140 Cover 141 Slider 150 Screen frame 150a Screen 151 Roller 152 Roller block 153 Roller actuator 154 Roller slider 155 Push bar 156 Push bar actuator 157 Box 158 Suction duct 159 First 1 bracket 160 slider Z 161 slider Y 162 Second bracket 165 Peeling tape 166 Tape feeding means 166a Guide roller 167 Tape collecting means 168 Push-out slider 169 Support bracket 170 Main arm 170a Axis 170b Axis 171 Sub arm 171b Axis 172 Peeling tape guide 173 Frame 174 Support arm 174 Shaft 174b Spring hook 175 Fixed-side roller 176 Swing-side roller 176a Shaft 177 Spring

Claims (8)

[Claims] 1. A method of attaching a polarizing plate having an adhesive layer to a liquid crystal panel, comprising: arranging a screen in parallel with a surface of the liquid crystal panel to which the polarizing plate is attached, and suctioning through the screen. Thereby, the polarizing plate is held while the surface having the adhesive layer faces the liquid crystal panel, and one end of the surface of the polarizing plate having the adhesive layer is pressed against the liquid crystal panel by pressing the screen. Then, the roller is moved from the one end of the polarizing plate to the other end while pressing the screen toward the liquid crystal panel by a roller that can abut on a surface of the screen opposite to the side holding the polarizing plate. A method of attaching the polarizing plate from the one end to the other end of the polarizing plate to the liquid crystal panel. 2. Arranging a plurality of the liquid crystal panels with respect to the screen, holding the same number of the polarizing plates as the liquid crystal panels by the screen in opposition to the liquid crystal panel, and pressing the screen, One end of the surface of one of the polarizing plates having the adhesive layer of the polarizing plate is pressed against the liquid crystal panel, and the roller is pressed against the liquid crystal panel while the roller is used to press the screen out of the polarizing plate. The polarizing plate attaching method according to claim 1, wherein all of the plurality of polarizing plates are attached to the plurality of liquid crystal panels by moving the one polarizing plate from the one end to another polarizing plate. . 3. The screen has a thickness of 0.05 to 0.05.
Within the range of 0.3 mm, the number of meshes is within the range of 80 to 140 / cm, the surface is subjected to antistatic treatment, the outside of the polarizing plate suction range is covered, and is provided on the screen frame. The polarizing plate sticking method according to claim 1 or 2, wherein the polarizing plate is attached. 4. A polarizing plate sticking apparatus for sticking a polarizing plate having an adhesive layer to a liquid crystal panel, comprising: a screen arranged in parallel with a surface of the liquid crystal panel on which the polarizing plate is stuck; Suction means for holding the polarizing plate while the surface having the adhesive layer is opposed to the liquid crystal panel through the screen; and pressing one end of the surface of the polarizing plate having the adhesive layer on the liquid crystal panel via the screen. Pressing means, and a roller which is provided so as to be in contact with the surface of the screen opposite to the side holding the polarizing plate, and which is movable while pressing the screen toward the liquid crystal panel. Polarizing plate sticking device. 5. The screen has a thickness of 0.05 to 0.05.
The area within 0.3 mm, the number of meshes is within the range of 80 to 140 / cm, the surface is subjected to an antistatic treatment, and the outside of the area where the polarizing plate is sucked is covered. Item 6. A polarizing plate sticking apparatus according to Item 4. 6. A transport mechanism for holding the liquid crystal panel on a table, and transporting the liquid crystal panel to each of a supply position, a positioning position, and a polarizing plate sticking position of the liquid crystal panel; A positioning mechanism for sandwiching and positioning the liquid crystal panel with a pin having a pulse-driven opening / closing mechanism; a polarizing plate supply mechanism for transporting the stacked polarizing plates one by one to a polarizing plate positioning mechanism; A polarizing plate positioning mechanism for positioning the positioned polarizing plate by sandwiching the pin with a pin having a pulse-driven opening / closing mechanism, and holding the positioned polarizing plate by a box for sucking through the screen and affixing the polarizing plate to an adhesive surface of the polarizing plate. After the separated separator is peeled off by the peeling mechanism, and a sticking mechanism that moves to the sticking position of the liquid crystal panel. Polarizing plate sticking apparatus according to claim 4 or 5, wherein for. 7. The polarizing plate sticking device according to claim 6, further comprising: a panel supply mechanism for putting the liquid crystal panel into the polarizing plate sticking device; and the liquid crystal panel on which the polarizing plate has been stuck. 2. A polarizing plate sticking device, comprising: two polarizing plate sticking devices having a reversing mechanism for holding and reversing by vacuum suction. 8. The alignment of the liquid crystal panel and the corners of the polarizer are recognized by respective image processing devices, and the position of the polarizer when attached to the liquid crystal panel is corrected while the polarizer is attached to the liquid crystal panel. The polarizing plate sticking apparatus according to any one of claims 4 to 7, wherein