JP6619785B2 - Method for manufacturing laminated body of optical display device - Google Patents

Description

The present invention relates to a method for manufacturing a laminate of an optical display device. More specifically, the present invention provides a laminated body of an optical display device by laminating an optical film sheet including a polarizing film on both sides of a rectangular liquid crystal panel so that the absorption axis has a crossed Nicols relationship. A method of manufacturing a polarizing film on one side of a liquid crystal panel in which an optical film sheet including a polarizing film having a width or length corresponding to the width or length of the liquid crystal panel is laminated in advance on the other side of the liquid crystal panel It is related with the method of manufacturing the laminated body which laminated | stacked the optical film sheet containing this so that it might stick out from the other side except the long side of a liquid crystal panel.

A roll-to-panel (RTP) manufacturing method is employed at the manufacturing site of optical display devices (for example, Patent Document 1). In the RTP method, an optical display device is usually manufactured as follows. First, an optical film laminate having a predetermined width is unwound from a roll. The optical film laminate is composed of an optical film including a carrier film, an adhesive layer formed on one surface of the carrier film, and a polarizing film supported on the carrier film via the adhesive layer. The optical film may be a single layer or a multilayer. Usually, a cut line is continuously formed in the width direction in the extended optical film laminate, whereby an optical film sheet including a polarizing film is formed between adjacent cut lines.

The optical film sheet including the polarizing film continuously supported on the carrier film is peeled from the carrier film together with the pressure-sensitive adhesive layer by a peeling means arranged near the bonding position, and is sent to the bonding position. In a peeling means, the carrier film side of an optical film laminated body is wound around the top part of the substantially wedge-shaped peeling means which has the top part which opposes a bonding position. The optical film sheet is peeled from the carrier film together with the pressure-sensitive adhesive layer by transporting the carrier film wound around the peeling means while being folded back in a direction substantially opposite to the transport direction of the optical film toward the bonding position. The optical film sheet that has reached the bonding position is bonded to the corresponding bonding surface of the panel that is separately conveyed to the bonding position along the conveyance path by the bonding means having a pair of bonding rollers. In the case of a liquid crystal panel, a laminated body of an optical display device is produced in which an optical film sheet including a polarizing film is sequentially laminated on both sides of the liquid crystal panel so that the absorption axis is in a crossed Nicol relationship. .

On the other hand, in recent years, optical display devices have been further reduced in size, thickness, and weight, and accordingly, not only the frame portion surrounding the liquid crystal display region is narrowed, that is, the frame is required to be frameless. Yes. As a method for responding to such a request, for example, as described in Patent Document 2, an optical film sheet larger than the liquid crystal panel is first bonded to one side of the liquid crystal panel, and then from one end of the liquid crystal panel. The excess portion of the protruding optical film sheet is cut off along the edge of the liquid crystal panel, thereby forming a liquid crystal panel in which the optical film sheet is bonded to one surface. Next, the liquid crystal panel with the optical film sheet bonded to one side is bonded to the other side with a larger optical film sheet than the liquid crystal panel, and the excess portion of the optical film sheet protruding from the end of the other side of the liquid crystal panel is liquid crystal A technique for manufacturing a laminated body of an optical display device that has been cut along the edge of the panel and thereby narrowed the liquid crystal display region has been proposed.

In patent document 2, the process of cutting off an excess part is performed in a series of manufacturing apparatuses. Specifically, the excess portion of the optical film sheet that is sequentially bonded to both surfaces of the liquid crystal panel in the manufacturing apparatus is laminated in a state where it protrudes from all four sides of the both surfaces of the liquid crystal panel each time. In the optical display device obtained as a product from the above, all the surplus parts of the four sides are separated from both sides of the liquid crystal panel along the both ends of the liquid crystal panel, and the optical film sheet corresponds to the bonding surface. This is a laminated body.

Patent Document 3 or Patent Document 4 proposes a production system in which an optical film sheet sticks out and sticks only on one side of the liquid crystal panel, and the optical film sheet sticks on the other side of the liquid crystal panel without sticking out. Yes. In the same manner as in Patent Document 2, the surplus part that sticks out and sticks out only on one surface of the liquid crystal panel is performed by a process of separating a series of production systems.

Specifically, the excess part of the optical film sheet bonded to one side of the liquid crystal panel is laminated in a state of protruding from all four sides of the liquid crystal panel, and an optical display obtained as a product from the production system In the device, the excess part of the optical film sheet bonded to one side of the liquid crystal panel is cut off along the edge of the liquid crystal panel, while the optical film sheet bonded to the other side of the liquid crystal panel is bonded without protruding. Since it is put together, each of the optical film sheets on both surfaces of the liquid crystal panel has a size corresponding to the bonding surface of the liquid crystal panel, and becomes a laminate similar to that in the case of Patent Document 2.

The laminated body of the optical display device is bonded along the reference line (alignment mark) so that the absorption axis of the polarizing film of the optical film sheet laminated on both surfaces of the liquid crystal panel has a crossed Nicols relationship. This is because of the light shutter function of the optical display device. The polarizing film of the optical film sheet also includes a display region, and has a size of a region on or exceeding the black matrix inside the liquid crystal panel.

As is clear from the schematic diagram of FIG. 4, the laminated structure of the optical display device has a CF side which is the viewing side of the one side 51 of the liquid crystal panel including a glass substrate having a color filter interposed at least on both sides of the liquid crystal. It consists of a member on the TFT side that is the non-viewing side of the other surface 52 of the liquid crystal panel including a member and a glass substrate with a light distribution film and a transparent electrode interposed therebetween. Usually, one of the long sides of the other surface 52 of the liquid crystal panel is on one surface side of the protruding portion in which the terminal portion 50 incorporating the transparent electrode protrudes from the corresponding one side of the one surface of the liquid crystal panel. It becomes the provided structure.

Japanese Patent No. 4377964 JP 2014-228563 A JP2013-137538A JP 2014-224911 A

In the RTP manufacturing method, the optical display device is framed after the liquid crystal panel and the optical film sheet are bonded together with the optical film sheet protruding from the end of the liquid crystal panel. This is achieved by cutting off the excess portion protruding from the end of the liquid crystal panel. However, as proposed in Patent Documents 2 to 4, when the excess part of the peripheral edge is separated after sticking out from the end of the liquid crystal panel in a series of production lines, all the excess parts are precisely separated. Takes a long time, resulting in a significant reduction in productivity.

Therefore, depending on the customer who has a liquid crystal panel manufacturing process such as a panel maker, how to cut off the excess part of the peripheral edge, specifically, along the edge of the liquid crystal panel, the protrusion margin of several millimeters There is a demand that the customer himself / herself wants to perform separation processing of the excess portion of the peripheral edge in a separate process. In response to such demands, the optical film sheet protrudes from the viewing side of one side of the liquid crystal panel, and the optical film is left behind without leaving the excess part of the periphery of the liquid crystal panel that has been largely bonded. There is a need to provide a stack of devices.

However, in the RTP method, if an attempt is made to provide a laminate by leaving an excess portion of the optical film sheet without cutting off the excess portion of the peripheral edge of the liquid crystal panel in a series of production lines, the liquid crystal panel and the optical film sheet are combined with the liquid crystal panel. After bonding the liquid crystal panel and the optical film in a state of protruding from the four sides of the panel, the absorption axis of the polarizing film has a crossed Nicols relationship when the optical film sheet includes the polarizing film. This makes it difficult to confirm the alignment mark that becomes the reference point of the display area of the liquid crystal panel. Therefore, it becomes difficult to align the optical film sheet including the liquid crystal panel and the polarizing film.

All of the RTP manufacturing apparatuses and manufacturing methods described in Patent Documents 2 to 4 are separated from the liquid crystal panel in the manufacturing process or the production system, and all the excess portions of the optical film sheet are separated. The optical display device obtained as a product manufactured from is made of a laminate having no protruding portion of the optical film sheet, and need not be described. is not.

The embodiments disclosed in Patent Documents 3 and 4 are both optical films on the CF side that become the viewing side after sticking the optical film sheet to the TFT side that becomes the non-viewing side of the liquid crystal panel and sticking the optical film sheet. Only a configuration in which the sheets are bonded together without protruding is disclosed. In Patent Documents 3 and 4, after the optical film sheet is pasted to the TFT side that is the non-viewing side of the liquid crystal panel without sticking out, the optical film sheet is sticked to the CF side that is the viewing side of the liquid crystal panel. This laminate is not disclosed. Moreover, it is not a laminated body of an optical display device corresponding to the above-mentioned customer's request.

A further technical problem is that even if the optical film sheet protrudes from the CF side, which is the viewing side of the liquid crystal panel, and the surplus part is all four sides of the laminated body of the optical display device, the customer himself / herself is a separate process. Wipe away the danger of damaging the terminal part 50 with the built-in transparent electrode provided on the visible side of the protruding part protruding from the corresponding one side of the non-viewing side of the liquid crystal panel when cutting off the excess part of the peripheral edge I can't do that either. The present invention has been realized by challenging such technical problems.

The above problem is that the CF side on the viewing side of the liquid crystal panel in which an optical film sheet having a width or length corresponding to the width or length of the liquid crystal panel is bonded to the surface on the TFT side that is the non-viewing side of the liquid crystal panel The optical film sheet is attached to the surface of the liquid crystal panel so that the optical film sheet does not cover the terminal portion on one side of the long side of the liquid crystal panel and so as to stick out from the other side excluding the one side of the long side of the liquid crystal panel. Can be solved.

In the case of such a laminated body of an optical display device, the step of separating the excess portion of the optical film sheet that has been laminated out of the liquid crystal panel is appropriately performed separately from the method of manufacturing the laminated body of the optical display device. Productivity is greatly improved.

In addition, according to the method of the present invention, the optical film sheet on the TFT side that is the non-viewing side of the liquid crystal panel and the optical film sheet on the CF side that is the viewing side are both composed of the polarizing film, The crossed Nicols relationship only occurs where they overlap.

Therefore, the alignment mark of the liquid crystal panel, the edge of the liquid crystal panel, etc. are easily read through the optical film sheet of the CF side surface on the viewing side at the outer periphery of the optical film sheet on the TFT side surface which is the non-viewing side. Therefore, it is possible to realize an accurate separation process of the surplus portion.

Furthermore, since the optical film sheet is laminated so as to stick out from the other side except the one side of the long side of the liquid crystal panel on the CF side surface that becomes the viewing side when the optical display device is assembled, It becomes possible to make the viewing side frameless.

This invention provides the method of manufacturing the laminated body 6 of an optical display apparatus, for example using the 1st bonding apparatus 100 shown by FIG.
As shown in FIG. 1, the entire apparatus 1 that implements the present invention will now be outlined. The apparatus 1 performs the 2nd bonding process which performs the pre-processing process of this invention in which the liquid crystal panel 5 adsorbed and fixed to the positioning means 81 of the 2nd bonding apparatus 200 is conveyed along the conveyance path 30 from an upstream process. The second optical film sheet 20 is bonded in advance to the combined device 200 and the other surface 52 of the liquid crystal panel 5 that has undergone the pretreatment process (FIG. 2), and the liquid crystal panel 5 that has been reversely swung by the reversing swivel unit 300 is transported. The first optical film sheet 10 is bonded to one surface 51 of the liquid crystal panel 5 which is conveyed along the line 30 and is sucked and fixed to the alignment means 80 during the process (FIG. 2). 1st bonding apparatus 100 which manufactures the laminated body 6 of an apparatus. It is shown in the enlarged schematic diagram of FIG. Moreover, the manufactured laminated body 6 is further sent to downstream processes, such as an inspection process.

In the present invention, as shown in FIG. 3, the first optical film sheet 10 is adhered to one surface 51 of the rectangular liquid crystal panel 5 in which the terminal portion 50 is formed on one side of the long side shown in FIG. The first optical film laminate of the continuous web configured to be continuously supported by the first carrier film 2 of the continuous web by the agent layer is unwound from the roll R1, and the first optical film sheet 10 is It peels with the adhesive layer from the 1st carrier film 2 of the continuous web wound up by roll R2 via the peeling means 60, and is sent to the 1st sticking position 101. FIG. Therefore, the second optical film sheet 10 is not peeled off from the other surface 52 of the liquid crystal panel 5 that is separately transported along the transport path 30 to the first sticking position 101. The liquid crystal panel 5 is configured so that one side 51 of the liquid crystal panel 5 configured in a state where 20 is bonded in advance is not covered with the terminal portion 50 formed on one side of the long side of the liquid crystal panel 5 and the length of the liquid crystal panel 5 is long. It is pasted so that it sticks out from the other side except one side of the side.
The present invention is a method for producing a laminate 6 of an optical display device thereby.

In addition, the liquid crystal panel comprised in the state which bonded together the 2nd optical film sheet 20 previously so that it may not stick out from the other surface 52 of the liquid crystal panel 5 separately conveyed along the conveyance path to the 1st sticking position 101. 5 is pre-processed in the 2nd bonding apparatus 200 shown by FIG. 1 based on the following methods. The second optical film sheet 20 having a width or length corresponding to the width or length of the other surface 52 of the liquid crystal panel 5 is continuously supported on the second carrier film 3 via an adhesive layer. The second optical film laminate of the continuous web constituted in the state of being rolled out from the roll R3, and the second optical film sheet 20 is wound up on the roll R4 via the peeling means 61, so that the second of the continuous web. The carrier film 3 is peeled off together with the pressure-sensitive adhesive layer, sent to the second sticking position 201, and transferred from the other face 52 to the other face 52 of the liquid crystal panel 5 separately transported along the transport path 30 to the second sticking position 201. It consists of the process of pasting together so that it may not come out.

As shown in the explanatory diagram of FIG. 4, one aspect of the present invention is directed to one surface 51 of a rectangular liquid crystal panel 5 in which a terminal portion 50 is formed on one side of a long side.
c ≦ a + db (1), and
y = b + d−a> 0 (2),
However,
a: Distance from one end of the long side of the liquid crystal panel 5 transported with the short side to the tip to the center line 500 of the liquid crystal panel 5 in the transport direction or the short side of the liquid crystal panel 5 when the short side is transported to the tip Half the width,
b: Distance from one end of the long side of the first optical film sheet 10 when the short side is sent to the tip to the center line 600 of the first optical film sheet 10 in the feed direction or the short side is sent to the tip The length of half of the width of the first optical film sheet 10 when
c: Width interval with respect to the conveying direction of the terminal portion 50 formed on one side of the long side of the liquid crystal panel 5;
d: the amount of deviation from the center line 600 of the first optical film sheet 10 when the terminal portion 50 of the liquid crystal panel 5 is placed at the pasting position 100 where the first optical film sheet 10 is not covered, and
y: Amount of protrusion of the first optical film sheet 10 protruding from the other side of the long side of the liquid crystal panel 5,
Based on the first related position information 55 shown by the relational expression consisting of
A first optical film laminate of a continuous web configured in a state where the first optical film sheet 10 is continuously supported by the carrier film 2 of the continuous web by the adhesive layer is fed out from the roll R1, and the first optical film sheet 10 is fed out from the roll R1. The optical film sheet 10 is peeled from the continuous web carrier film 2 together with the pressure-sensitive adhesive layer, sent to the first sticking position 101, and removed from the other surface 52 of the liquid crystal panel 5 conveyed to the first sticking position 101. So as not to cover the terminal portion 50 formed on one side of the long side on the one surface 51 of the liquid crystal panel 5 configured in a state where the second optical film sheet is bonded to the long side. This is a method of manufacturing a laminated body of an optical display device by sticking so as to protrude from the other side except the one side.

As one embodiment of the present invention, it further relates to one surface 51 of the liquid crystal panel 5 shown in the explanatory view of FIG.
Φ = a + d−b−c ≦ 5 mm (3)
However, Φ: the gap between the first optical film sheet 10 and the terminal portion 50 when the first optical film sheet 10 is bonded to the liquid crystal panel 5 so as not to be covered with the terminal portion 50,
Based on the second related position information 56 expressed by the relational expression
A first optical film laminate of a continuous web configured in a state where the first optical film sheet 10 is continuously supported by the carrier film 2 of the continuous web by the adhesive layer is fed out from the roll R1, and the first optical film sheet 10 is fed out from the roll R1. The optical film sheet 10 is peeled from the carrier film 2 of the continuous web together with the pressure-sensitive adhesive layer, sent to the first sticking position 101, and removed from the other surface 52 of the liquid crystal panel 5 conveyed to the first sticking position 101. So as not to cover the terminal portion 50 formed on one side of the long side on the one surface 51 of the liquid crystal panel 5 configured in a state where the second optical film sheet is bonded to the long side. And a method of manufacturing a laminated body of an optical display device by sticking so as to protrude from the other side except the one side.

As one embodiment of the present invention, it is also possible that a second optical film sheet 20 having a width or length corresponding to the width or length of the other surface 52 of the liquid crystal panel 5 is adhered onto the second carrier film 3. The second optical film laminate of the continuous web configured to be continuously supported through the agent layer is fed out from the roll R3, whereby the second optical film sheet 20 is transferred to the second carrier of the continuous web. The film 3 is peeled off together with the pressure-sensitive adhesive layer, sent to the second sticking position 201, and transferred from the other face 52 to the other face 52 of the liquid crystal panel 5 that is separately transported along the transport path 30 to the second sticking position 201. They can be pasted together so that they do not come out.

The second bonding apparatus including a pretreatment step for bonding the second optical film sheet so as not to protrude from the other surface of the liquid crystal panel of the present invention, and the second bonding device so as not to stick out from the other surface of the liquid crystal panel. The one side of the liquid crystal panel that is configured with the optical film sheet 20 attached is placed on one side of the long side of the liquid crystal panel so that the first optical film sheet does not cover the terminal portion of the liquid crystal panel. It is the schematic diagram which looked at the whole apparatus used for the method of manufacturing the laminated body of the optical display apparatus of this invention which consists of the 1st bonding apparatus including this process bonded together so that it may stick out from the other side except the side. is there. It is a schematic diagram showing the structure of the liquid crystal panel which comprises the laminated body of the optical display apparatus of this invention. It is an expansion schematic diagram of the 1st bonding apparatus of FIG. It is explanatory drawing which shows the relationship between the centerline of the liquid crystal panel which implement | achieves the method to manufacture the laminated body of the optical display apparatus of this invention, and the centerline of a 1st optical film sheet. It is a schematic diagram of process drawing showing one embodiment which implement | achieves the method of manufacturing the laminated body of the optical display apparatus of this invention. It is a flowchart showing the process drawing of FIG. Misalignment amount δ between one surface of the liquid crystal panel and the first optical film sheet when the one surface is aligned, and the other side excluding one side of the long side of the liquid crystal panel of the first optical film sheet It is explanatory drawing showing the amount y of sticking out from. The first optical film sheet aligned with one side of the liquid crystal panel is attached so that it does not cover the terminal part of the liquid crystal panel and protrudes from the other side except for one side of the long side of the liquid crystal panel. It is explanatory drawing showing the state put together.

The present invention, as one aspect thereof, is shown in steps (a) to (g) of FIG. 5 although the steps partially overlap, and shown in the corresponding operations of the flow diagrams (i) to (viii) of FIG. It is. For example,
A position adjusting step A for adjusting the center line 500 of the liquid crystal panel 5 including the steps (a) to (e) so as to coincide with the center line 600 of the transport path 30 of the liquid crystal panel 5;
A position detection step B of the first optical film sheet 10 including the step (e);
Of the first optical film sheet 10 supported by the first carrier film 2 in which the center line 500 of the liquid crystal panel 5 and the first optical film laminate are drawn out from the roll R1, including the steps (f) and (g). After the position adjustment with the center line 700, a first bonding step C for bonding the first optical film sheet 10 to the one surface 51 of the liquid crystal panel 5,
Can be included.

In the position adjustment step A including steps (a) to (e), it is assumed that the liquid crystal panel 5 is transported to the first sticking position 101 in a state of being displaced from the center line 600 of the transport path 30. Steps (b) and (c) correspond to the operations in the flowchart (i), and the liquid crystal panel 5 conveyed in a shifted state is temporarily stopped, and for example, the position adjusting means 70 shown in FIG. The center line 500 of the liquid crystal panel 5 is pressed from around the liquid crystal panel and adjusted so as to be corrected to the temporary reference position α that coincides with the center line 600 of the transport path 30.

Step (d) also corresponds to the operation of (ii). Here, the operation of the position adjusting means 70 is canceled, and the position-adjusted liquid crystal panel 5 is, for example, the alignment means 80 shown in FIG. It is fixed by adsorption. In FIG. 5, the temporary reference position α is a correction position in which the center line 500 of the liquid crystal panel 5 is matched with the center line 600 of the transport path 30.

Step (e) also corresponds to the operation of (iii), and the panel detection means 150 shown in FIG. 3 reads the reference point 53 such as the alignment mark of the liquid crystal panel 5 and is preset in the panel detection means 150. In contrast to the first reference information 54, the liquid crystal panel 5 at the temporary reference position α is readjusted to the reference position β. Step (e) also corresponds to the operation of (iv), and the liquid crystal panel 5 readjusted to the reference position β is related to the first pasting position 101 shown in FIG. For example, the position of the first optical film sheet 10 is detected by the sheet detecting means 90 so as to be aligned as shown in FIG.

The position detection step B comprising the step (e) related thereto further corresponds to the same operations (v) and (vi), that is, the operation of the control device 550, as shown in the explanatory diagram of FIG. In addition, the operation (v) calculates a deviation amount δ between the position of the first optical film sheet 10 detected by the sheet detecting means 90 and the position of the liquid crystal panel 5 readjusted to the reference position β. As shown in the explanatory diagram of FIG. 8, the operation vi) is performed so that the displacement amount δ does not cover the terminal portion 50 on one side of the long side of the liquid crystal panel 5 and the long side of the liquid crystal panel 5. The first related position information 55 is calculated by adding the adjustment amount y1 of the first optical film sheet 10 adjusted so as to protrude from the other side excluding the one side.

The positions at which the steps (a) to (e) of FIG. 5 of the present invention are performed, specifically, the temporary reference position α in the steps (b) and (c) and the reference position β in the steps (d) and (e). Corresponds to the left end position where the panel detecting means 150 is installed, as shown in FIG.
For the liquid crystal panel 5 that has been transported from the upstream side to the step (a) by a displacement amount δ from the center line 600 of the transport path 30, as the operation shown in FIG. The adjustment unit 70 corrects the shift amount δ to adjust the position to the temporary reference position α.

The liquid crystal panel 5 whose position is adjusted to the temporary reference position α is positioned at the reference position β as follows. At the positions of the steps (d) and (e), the liquid crystal panel 5 is sucked and fixed by the positioning means 80 as the operation (ii). Similarly, as the operation of (iii), the liquid crystal panel 5 in the state of being adsorbed and fixed by abutting with the first reference information 54 preset in the panel detection means 150 is precisely readjusted to the reference position β. . Similarly, as the operation (iv), the first optical film sheet 10 is detected by the sheet detecting means 90. Similarly, as the operations of (v) and (vi), as shown in FIG. 4, the position where the liquid crystal panel 5 readjusted to the reference position β is aligned with the detected position of the first optical film sheet 10. Information is calculated as first related position information 55 in the control device 550.

The bonding process C including the processes (f) and (g) associated with this corresponds to the operations shown in the flow diagrams (vii) and (viii), and corresponds to the process (f) of (vii). The position where the operation is performed is appropriately selected. For example, it can be done at the reference position β. It can also be done at the first sticking position 101. Alternatively, it can be performed at the sticking adjustment position γ located between these two positions. Here, it is assumed that the step (f) is performed at the sticking adjustment position γ. Then, in step (f), the liquid crystal panel 5 readjusted to the reference position β is conveyed to the sticking adjustment position γ as the operation shown in the flowchart (vii) first. Next, the liquid crystal panel 5 changes the center line 500 of the liquid crystal panel 5 to the center line 700 of the first optical film sheet 10 based on the first related position information 55 calculated by the control device 550 at the sticking adjustment position γ. Thus, the sticking adjustment is performed on the first optical film sheet 10 so as to translate by an adjustment amount y1 from the center line 700. Furthermore, the liquid crystal panel 5 that has been subjected to the sticking adjustment is conveyed to the first sticking position 101.

As in the operation (viii), the final step (g) is peeled from the first carrier film 2 with respect to the liquid crystal panel 5 that has been subjected to sticking adjustment at the first sticking position 101 as shown in FIG. The first optical film sheet 10 is not covered with the terminal portion 50 formed on one side of the long side of the liquid crystal panel 5 and the other side of the liquid crystal panel 5 other than one side of the long side It is pasted together so that it comes out from.

Step (f) is to adjust the liquid crystal panel 5 to the first optical film sheet 10 based on the first related position information 55 as the operation shown in the flowchart (vii). As already pointed out, it can be performed in advance at the reference position β or at the first pasting position 101. Therefore, in the method of manufacturing the laminate 6 of the optical display device constituted by the steps (a) to (g), the liquid crystal panel 5 is moved at the reference position β without passing through the sticking adjustment position γ, or Needless to say, the first pasting position 101 can be pasted simultaneously with the adjustment of the liquid crystal panel 5 by the first related position information 55.

Incidentally, the relative relationship between the liquid crystal panel 5 and the first optical film sheet 10 is c ≦ a + db (1), and
y = b + d−a> 0 (2),
It is represented by This is the first related position information 55 calculated by the control device 550.
Each of a, b, c, d, and y at this time is defined as follows.
a: Distance from one end of the long side of the liquid crystal panel 5 transported with the short side to the tip to the center line 500 of the liquid crystal panel 5 in the transport direction or the short side of the liquid crystal panel 5 when the short side is transported to the tip Half the width,
b: Distance from one end of the long side of the first optical film sheet 10 when the short side is sent to the tip to the center line 600 of the first optical film sheet 10 in the feed direction or the short side is sent to the tip The length of half of the width of the first optical film sheet 10 when
c: Width interval with respect to the conveying direction of the terminal portion 50 formed on one side of the long side of the liquid crystal panel 5;
d: The amount of deviation from the center line 600 of the first optical film sheet 10 when the application position 100 is set so that the first optical film sheet 10 is not covered with the terminal portion 50 of the liquid crystal panel 5;
y: the amount of protrusion of the first optical film sheet 10 that protrudes from the other side of the long side of the liquid crystal panel 5.

Furthermore, the second related position information 56 calculated by the control device 550 is:
As shown in the explanatory diagram of FIG. 4, the relationship between the one surface 51 of the liquid crystal panel 5 and the first optical film sheet 10 is Φ = a + d−b−c ≦ 5 mm (3)
It is expressed by the relational expression. This gap Φ is for enabling bonding with a slight margin when the first optical film sheet 10 is bonded to the liquid crystal panel 5 so as not to be covered with the terminal portion 50. However, if the width c of the terminal portion 50 is too small with respect to (a + d−b), the gap Φ becomes too large to be implemented as a product, so that c ≦ 3.5 mm is more preferable.

Therefore, when the width 2b of the first optical film sheet 10 and the width 2a of the liquid crystal panel 5 are the same, the width of the terminal portion 50 is from the center line 600 of the first optical film sheet 10 of the liquid crystal panel 5. It is equal to the deviation amount d. In addition, as shown in FIG. 4, when the width 2b of the first optical film sheet 10 is larger than the width 2a of the liquid crystal panel 5, as shown in FIG. In the state where the amount is y0 and the adjustment amount y1 that is adjusted so as not to cover the terminal portion 50 is added thereto, the total amount y of the first optical film sheet is determined. Conversely, the width 2b of the first optical film sheet 10 can be made narrower than the width 2a of the liquid crystal panel 5, but the limit is that when the deviation amount d, that is, the adjustment amount y1 becomes d (y1) = 0, the liquid crystal panel It is impossible to manufacture a laminated body of an optical display device by sticking to one side 51 of No. 5 so as to protrude from the other side except for one side of the long side. Even in that case, the condition is that the deviation d is d> 0.

As is clear from the schematic diagram of FIG. 2, the liquid crystal panel 5 used in the present invention has a first optical film sheet on one side 51 which is the viewing side of the liquid crystal panel 5 and the other side 52 which is the non-viewing side. 10 and the polarizing film which comprises the 2nd optical film sheet 20 are bonded together through an optical compensation film etc. so that an absorption axis may have a crossed Nicols relationship.

The laminated body 6 of the optical display device manufactured according to the present invention is a liquid crystal configured in a state in which the second optical film sheet 20 is bonded in advance so as not to stick out from the other surface 52 on the TFT side of the liquid crystal panel 5. The first optical film sheet 10 is not covered on the one surface 51 of the panel 5, that is, on the CF side, so as not to cover the terminal portion 50 provided on the one surface 521 of the protruding portion 520 on the TFT side. 5 are bonded so as to protrude from the other side except the one side of the long side, preferably by the width y of the terminal portion 50. Therefore, the outside of the region of the first optical film sheet 10 bonded to the one surface 51 of the liquid crystal panel so as to stick out from the other side other than the one side is usually a transparent region.

If it is the laminated body 6 of the optical display device manufactured in this way, the first optical film sheet 10 is bonded so as not to cover the terminal portion 50 formed on the liquid crystal panel 5. Compared to the conventional laminate in which the sheet is laminated so as to cover the terminal portion 50 of the liquid crystal panel 5, it is not necessary to cut and remove the excess portion of the first optical film sheet that covers the terminal portion 50. Therefore, there is no worry of damaging the terminal portion 50.

In this aspect, the present invention provides a method for manufacturing the laminate 6 of the optical display device. In the one embodiment, as shown in the second bonding apparatus 200 of FIG. 1, the width or length of the other surface 52 of the liquid crystal panel 5 in the upstream pretreatment process of the apparatus 1 for carrying out the method. Roll of the second optical film laminate of the continuous web in a state where the second optical film sheet 20 having a width or length corresponding to the thickness is continuously supported by the second carrier film 3 via the adhesive layer R3 is paid out. At that time, the second optical film sheet 20 is peeled from the second carrier film 3 of the continuous web together with the pressure-sensitive adhesive layer, and sent to the second sticking position 201. Therefore, the liquid crystal panel 5 sucked and fixed by the second positioning means 81 is conveyed to the second sticking position 201, and the second optical film sheet 20 is removed from the other surface 52 to the other surface 52 of the liquid crystal panel 5. Paste them together so that they do not come out.

In the embodiment, the liquid crystal panel 5 in which the second optical film sheet 20 is bonded in advance to the other surface 52 of the liquid crystal panel 5 is adsorbed by the second alignment means 81 as shown in FIG. In the fixed state, it is transported to the second sticking position 201, where the suction fixing of the second positioning means 81 is released. Thereafter, the liquid crystal panel 5 is transported on the transport path 30 to the reversal turning unit 300 with the long side as the leading end surface. Next, the liquid crystal panel 5 is turned 90 degrees by a turning means (not shown) in the turning process, and is transported with the short side of the liquid crystal panel 5 as the front end surface while being turned by the turning means (not shown). It is conveyed along the path 30 to the first bonding apparatus 100. The laminated body 6 manufactured by the process of implementing this method is conveyed to downstream processes, such as an inspection process.

In the 1st bonding apparatus 100 of the one embodiment, the width | variety larger than the width | variety of the one surface 51 of the liquid crystal panel 5 by which the 2nd optical film sheet 20 was already bonded by the other surface 52 of the liquid crystal panel by the pre-processing process. The roll R1 of the 1st optical film laminated body of the continuous web which has is drawn out. The 1st optical film laminated body is comprised in the state by which the 1st optical film sheet 10 was continuously supported on the 1st carrier film 2 of a continuous web by the adhesive layer. At that time, the first optical film sheet 10 peeled together with the adhesive layer from the first carrier film 2 of the continuous web wound by the roll R2 through the peeling means 60 is sent to the first sticking position 101. . Therefore, the first optical film sheet 10 is placed on one side 51 of the liquid crystal panel 5 conveyed to the first sticking position 101, as shown in FIGS. 2 and 4, on one side of the long side of the liquid crystal panel 5. The liquid crystal panel 5 is bonded so as not to cover the terminal portion 50 formed on the other side, and to protrude from the other side of the liquid crystal panel 5 except for one side. As a result, since both the first optical film sheet 10 and the second optical film sheet 20 that are bonded to both surfaces of the liquid crystal panel are formed of a polarizing film, the absorption axes are in a crossed Nicols relationship.
In the present invention, the first optical film laminate may be the same as or smaller than the width of one surface of the liquid crystal panel. The width of the first optical film laminate is the width of the one surface 51 of the liquid crystal panel 5. 9, the adjustment amount y <b> 1 shown in FIG. 9 is the same as the punching amount y, and the adjustment is performed when the width of the first optical film laminate is smaller than the width of the one surface 51 of the liquid crystal panel 5. The amount y1 is larger than the punching amount y.

R1: First optical film laminate feed roll R2: First carrier film take-up roll R3: Second optical film laminate feed roll R4: Second carrier film take-up roll 10: First Optical film sheet 2: First carrier film 20: Second optical film sheet 3: Second carrier film

5: Liquid crystal panel 6: Laminated body of optical display device

50: Terminal part 51 of the liquid crystal panel 51: One side (CF side) of the liquid crystal panel
52: The other side of the liquid crystal panel (TFT side)
53: Reference point 54 such as an alignment mark of the liquid crystal panel 5: Reference information 55 preset in the panel detection means 55: First related position information 56: Second related position information δ: Liquid crystal panel included in the reference information Amount of deviation (center angle) between the center lines of the first optical film sheet
y: the first optical film adjusted so as not to cover the terminal portion formed on one side of the long side of the liquid crystal panel and to protrude from the other side excluding the one side of the long side of the liquid crystal panel The amount of squeeze out is obtained by adding the amount of squeeze out y0 of the first optical film sheet that squeezes out from the liquid crystal panel to the adjustment amount y1 of the sheet 10 without adjustment.

1: RTP device 30: conveyance path 100: first bonding device constituting the RTP device α: temporary reference position β: reference position γ: attachment adjustment position

101: first sticking position 60: first optical film sheet peeling means 70: liquid crystal panel position adjusting means 80: liquid crystal panel positioning means 90: sheet detecting means 150: panel detecting means

200: 2nd bonding apparatus 201 which comprises RTP apparatus: 2nd bonding position

Claims (6)

For one side of a rectangular liquid crystal panel with a terminal part on one side of the long side,
c ≦ a + db (1), and
y = b + da> 0 (2)
However,
a: Distance from one end of the long side of the liquid crystal panel transported to the front end of the short side to the center line of the liquid crystal panel in the transport direction or 1/2 of the short side width of the liquid crystal panel when transported to the front end of the short side length,
b: Distance from one end of the long side of the first optical film sheet when the short side is sent to the tip to the first optical film sheet center line in the feed direction or the first when the short side is sent to the tip Half the width of the optical film sheet,
c: Width of the terminal portion formed on one side of the long side of the liquid crystal panel with respect to the transport direction ,
d: the amount of deviation from the center line of the first optical film sheet to the center line of the liquid crystal panel when the position where the first optical film sheet is not covered with the terminal portion of the liquid crystal panel is set, and
y: Amount of protrusion of the first optical film sheet protruding from the other side of the long side of the liquid crystal panel,
Based on the first related position information indicated by the relational expression consisting of
The first optical film laminate of the continuous web configured in a state where the first optical film sheet is continuously supported on the carrier film of the continuous web by the adhesive layer is drawn out, and the first optical film The sheet is peeled from the carrier film of the continuous web together with the pressure-sensitive adhesive layer, sent to the first application position, and the second optical film sheet is provided on the other surface of the liquid crystal panel conveyed to the first application position. A terminal formed on one side of the long side of the liquid crystal panel on one side of the liquid crystal panel that has been bonded in advance so as not to overlap the alignment mark of the liquid crystal panel without sticking out from the other side so as not Hisara in part, and, so as to protrude from the other side except for one side of the long side of the liquid crystal panel, further the first optical film Sea And said second optical film is formed together with the polarizing film, such that their absorption axes are in a crossed Nicols relationship with each other, and characterized in that to produce a stack of bonded together are Ru optical display device how to.
For one side of the liquid crystal panel,
Φ = a + d−b−c ≦ 5 mm (3)
However, Φ: a gap between the first optical film sheet and the terminal portion when the first optical film sheet is bonded to the liquid crystal panel so that the terminal portion is not covered with the terminal portion,
Based on the second related position information represented by the relational expression of
The first optical film laminate of the continuous web configured in a state where the first optical film sheet is continuously supported on the carrier film of the continuous web by the adhesive layer is drawn out, and the first optical film The sheet is peeled off from the carrier film of the continuous web together with the pressure-sensitive adhesive layer, sent to the first sticking position, and not fed out from the other surface of the liquid crystal panel conveyed to the first sticking position. The liquid crystal panel is configured so as not to cover the terminal portion formed on one side of the long side of the liquid crystal panel on one surface of the liquid crystal panel configured with the optical film sheet of 2 bonded together. 2. The method according to claim 1, wherein a laminate of an optical display device that is bonded so as to protrude from the other side excluding one side of the long side is manufactured.
A second web of a continuous web configured such that a second optical film sheet having a width or length that does not protrude from the other surface of the liquid crystal panel is continuously supported on a carrier film of the continuous web by an adhesive layer. The optical film laminate is fed out, and the second optical film sheet is peeled off together with the adhesive layer from the carrier film of the continuous web, is sent to the second sticking position, and is transported to the second sticking position. The method according to claim 1, wherein the liquid crystal panel is bonded in advance so as not to stick out from the other surface of the liquid crystal panel.
The one surface of the liquid crystal panel is a surface of a CF-side comprising the viewing side, to claim 1, wherein 3 of the other surface of the liquid crystal panel is a surface of a TFT-side comprising a non-viewing side The method described.
The liquid crystal panel includes a member on one surface side and a member on the other surface side, and the member on the other surface side protrudes from a corresponding long side of the member on the one surface side to one side of the long side. the method according to any of claims 1 to 4, wherein the protruding portion, wherein the terminal portion is formed on the one surface side of the projecting portion to be.
The liquid crystal panel configured with the second optical film sheet bonded so as not to stick out from the other surface of the liquid crystal panel is placed on the long side of the liquid crystal panel before being sent to the first bonding position. 6. The method according to claim 1, wherein the liquid crystal panel is adjusted to a position where the liquid crystal panel is moved in parallel by abutting a position adjusting means from a side in the transport direction.

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