JP6619784B2 - 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, on one side of a liquid crystal panel in which an optical film sheet including another polarizing film having a width or length corresponding to the width or length of the liquid crystal panel is laminated on the other side of the liquid crystal panel in advance, The present invention relates to a method of manufacturing a laminated body in which an optical film sheet including a polarizing film is laminated so as to stick out from the other side excluding one side of the long side of the 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 containing 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 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 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 by sequentially laminating optical film sheets including a polarizing film on both sides of the liquid crystal panel so that the absorption axis is in a crossed Nicols 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 area 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 part 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 apparatus, 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 shown in the schematic diagram of FIG. 2, the laminated structure of the optical display device has a CF side which is the viewing side of one surface 51 of a liquid crystal panel including a glass substrate having a color filter interposed between both surfaces 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 during 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, as will be described. In other words, it is not a laminate that meets the customer's needs.

In addition, 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 bonded to the TFT side which is the non-viewing side of the liquid crystal panel without sticking out, the optical film sheet is protruded and bonded to the CF side which is the viewing side of the liquid crystal panel This laminate is not disclosed. Moreover, it is not a laminated body of optical display devices corresponding to the above-mentioned customer's demand.

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 with the built-in transparent electrode provided on the visible side of the protruding part that protrudes from the corresponding side on the non-visible side of the liquid crystal panel when cutting off the excess part of the periphery I can't. The present invention has been realized by challenging such technical problems.

The above-mentioned problem is that a CF 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 in advance to the surface on the TFT side which is the non-viewing side of the liquid crystal panel. The optical film sheet is bonded to the side surface 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 stick out from the other side except the one side of the long side of the liquid crystal panel. Can be solved.

In such a laminated body of an optical display device, the step of separating the excess portion of the optical film sheet that has been removed from the liquid crystal panel is appropriately performed separately from the method of manufacturing the laminated body of the optical display device. Productivity can be 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 will be laminated on the CF side surface that becomes the viewing side when the optical display device is assembled, so as to stick out from the other side except the one side of the long side of the liquid crystal panel, It is also 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 rotated by the reverse rotation 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.

One aspect of the present invention is that the first optical film sheet 10 is configured such that the first optical film sheet 10 is continuously supported by the adhesive layer on the first carrier film 2 of the continuous web. The roll R1 of the laminate is fed out, and the first optical film sheet 10 is peeled off together with the adhesive layer from the first carrier film 2 of the continuous web and sent to the first sticking position 101, and the first sticking position. 101 is attached to one surface 51 of the liquid crystal panel 5 which is configured in a state where the second optical film sheet 20 is bonded so as not to stick out from the other surface 52 of the rectangular liquid crystal panel 5 which is conveyed along the conveyance path 30. The product of the optical display device bonded so as not to cover the terminal portion 50 formed on one side of the long side of the liquid crystal panel 5 and to stick out from the other side other than the one side of the long side. A method of making a body 6.

It includes a first position adjustment step A1 for adjusting the center line 500 of the liquid crystal panel 5 so as to coincide with the center line 600 of the conveyance path 30, and a first position detection step B1 of the first optical film sheet 10. 1st bonding process C1 which bonds the 1st optical film sheet 10 to the one surface 51 of the liquid crystal panel 5 is included.

In the first position adjustment step A1, the liquid crystal panel 5 is adjusted to the first temporary reference position α1 so that the center line 500 of the liquid crystal panel 5 coincides with the center line 600 of the transport path 30, and the panel detection means 150 further adjusts the liquid crystal. This is a step of reading the reference point 53 of the panel 5 and readjusting the liquid crystal panel 5 to the first reference position β1 based on the first reference information 54 preset in the panel detection means 150. In the first position detection step B1 associated therewith, the position of the first optical film sheet 10 is detected by the sheet detection means 90, and the amount of deviation δ from the liquid crystal panel 5 readjusted to the first reference position β1 (FIG. 8) is calculated so that the amount of deviation δ is not covered with the terminal portion 50 on one side of the long side of the liquid crystal panel 5 and is projected from the other side excluding the one side of the long side of the liquid crystal panel 5. This is a step of calculating the first related position information 55 by adding the adjustment amount y1 (FIG. 9) of the first optical film sheet adjusted to the above. The 1st bonding process C1 linked | related with it conveys the liquid crystal panel 5 readjusted from the 1st reference position (beta) 1 to the 1st sticking position 101, and it becomes 1st related position information 55 in the 1st sticking position 101. Based on the above, the liquid crystal panel 5 is placed so that the first optical film sheet 10 does not cover the terminal portion 50 of the liquid crystal panel 5 and protrudes from the other side except the one side of the long side of the liquid crystal panel 5. This is a step of aligning and bonding to the first optical film sheet 10.

According to another aspect of the present invention, the first optical film sheet 10 is configured such that the first optical film sheet 10 is continuously supported on the first carrier film 2 of the continuous web by the adhesive layer. The roll R1 of the film laminate is fed out, and the first optical film sheet 10 is peeled off from the first carrier film 2 of the continuous web together with the adhesive layer and sent to the first sticking position 101, where the first sticking is performed. One surface 51 of the liquid crystal panel 5 configured in a state in which the second optical film sheet 20 is bonded to the position 101 from the other surface 52 of the rectangular liquid crystal panel 5 that is transported along the transport path 30 so as not to stick out. In addition, the optical display device is bonded so as not to cover the terminal portion 50 formed on one side of the long side of the liquid crystal panel 5 and to protrude from the other side other than the one side of the long side. A method of making a Sotai 6.

The center line 500 of the liquid crystal panel 5 is not covered from the center line 600 of the transport path 30 on the terminal portion 50 on one side of the long side set in advance, and one side of the long side of the liquid crystal panel 5 is excluded. A second position adjustment step A2 for adjusting the position to be translated by the adjustment amount y1 (FIG. 9) of the first optical film sheet 10 adjusted so as to protrude from the other side, and the first optical film sheet 10 2nd position detection process B2 and the 2nd bonding process C2 which bonds the 1st optical film sheet 10 to the one surface 51 of the liquid crystal panel 5 are included.

In the second position adjustment step A2, the liquid crystal panel 5 is moved to the second temporary reference position α2 so that the center line 500 of the liquid crystal panel 5 is moved in parallel from the center line 600 of the transport path 30 by a preset adjustment amount y1. The panel detecting unit 150 reads the reference point 53 of the liquid crystal panel 5 and readjusts the liquid crystal panel 5 to the second reference position β2 based on the second reference information 56 preset in the panel detecting unit 150. It is. In the second position detection step B2 associated therewith, the position of the first optical film sheet 10 is detected by the sheet detecting means 90, and the displacement amount λ with the liquid crystal panel 5 readjusted to the second reference position β2 is calculated. In addition, the liquid crystal panel 5 that has been set in advance to the displacement amount λ is not covered with the terminal portion on one side of the long side, and is removed from the other side of the liquid crystal panel other than the one side. This is a step of calculating the second related position information 57 in consideration of the adjustment amount y1 of the first optical film sheet 10 adjusted as described above. In the second pasting step C2 associated therewith, the readjusted liquid crystal panel 5 is transported from the second reference position β2 to the first pasting position 101, and the second calculated at the first pasting position 101 is transferred. Based on the related position information 57, the first optical film sheet 10 is not covered with the terminal portion 50 of the liquid crystal panel 5 and protrudes from the other side except for one side of the long side of the liquid crystal panel 5. In this step, the liquid crystal panel 5 is aligned with and bonded to the first optical film sheet 10.

As one embodiment of the present invention, a second optical film sheet 20 having a width or length corresponding to the width or length of the other surface of the liquid crystal panel 5 is placed on the second carrier film 3 with an adhesive layer interposed therebetween. The roll R3 of the second optical film laminate of the continuous web configured in a continuously supported state, thereby sticking the second optical film sheet 20 from the second carrier film 3 of the continuous web. It peels off together with the agent layer, is fed to the second sticking position 201, and sticks out from the other face 52 to the other face 52 of the liquid crystal panel 5 which is separately transported along the transport path 30 to the second sticking position 201. It is possible to paste them together in advance.

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 a schematic diagram of process drawing showing one embodiment of 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. It is a schematic diagram of the process drawing showing other embodiment of 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 or misalignment amount λ between one surface of the liquid crystal panel and the first optical film sheet aligned with the one surface, and other than one side of the long side of the liquid crystal panel of the first optical film sheet It is explanatory drawing showing the amount of sticking out y from a side. 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) in FIG. 4 although the steps partially overlap, and is shown in the corresponding operations in the flow diagrams (i) to (viii) in FIG. It is.

The present invention includes a first position adjusting step A1 that adjusts 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. The first position detection step B1 of the first optical film sheet 10 including (e), and the center line 500 of the liquid crystal panel 5 and the roll of the first optical film laminate including the steps (f) and (g). The first optical film sheet 10 is bonded to the one surface 51 of the liquid crystal panel 5 after the position adjustment with the center line 700 of the first optical film sheet 10 supported by the first carrier film 2 drawn out from R1. The bonding process C1.

In the first position adjustment step A1 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. The Steps (b) and (c) correspond to the operation of the flow diagram (i). The liquid crystal panel 5 conveyed in such a shifted state is temporarily stopped, and then, for example, shown in FIG. The position adjusting unit 70 is operated to adjust the center line 500 of the liquid crystal panel 5 to the first temporary reference position α1 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. 4, the first temporary reference position α1 and the first reference position β1 are correction positions in which the center line 500 of the liquid crystal panel 5 is aligned with the center line 600 of the transport path 30. The first reference position β1 further indicates a re-correction position where the panel detection means 150 reads the position of the liquid crystal panel and corrects it. This is an operation included in the step (e).

The step (e) also corresponds to the operation of (iii). First, the panel detection unit 150 reads a reference point 53 such as an alignment mark of the liquid crystal panel 5 and presets it in the panel detection unit 150. In contrast to the first reference information 54, the liquid crystal panel 5 is readjusted to the first reference position β1. The step (e) also corresponds to the operation of (iv), and is related to the readjustment of the liquid crystal panel 5 and, for example, at the first pasting position 101 as shown in FIG. 90, the position of the first optical film sheet 10 is detected.

The first position detection step B1 including the step (e) related thereto further corresponds to the operations (v) and (vi), that is, the operation of the control device 550, and is shown in the explanatory diagram of FIG. As described above, the operation (v) calculates the amount of deviation 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 first reference position β1. As shown in the explanatory diagram of FIG. 9, 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 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 one side of the long side.

The positions at which the steps (a) to (e) of FIG. 4 of the present invention are performed, specifically, the first temporary reference position α1 in steps (b) and (c) and the steps in steps (d) and (e). As shown in FIG. 3, the first reference position β1 corresponds to the left end position where the panel detecting means 150 is installed. With respect to the liquid crystal panel 5 that has been transported from the upstream side to the step (a) in a state shifted from the center line 600 of the transport path 30, the position adjusting means 70 first performs the operation shown in the flowchart (i). Position adjustment is performed to correct the shifted state to the first temporary reference position α1.

The position-adjusted liquid crystal panel 5 is positioned at the first reference position β1 as follows. At this position, the liquid crystal panel 5 is also 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 attracted and fixed by matching the first reference information 54 preset in the panel detecting means 150 is precisely readjusted to the first reference position β1. Made. Similarly, as the operation (iv), the first optical film sheet 10 is detected by the sheet detecting means 90. Similarly, as the operations (v) and (vi), relative position information between the detected position of the first optical film sheet 10 and the position of the liquid crystal panel 5 readjusted to the first reference position β1 is obtained. In the control device 550, the first related position information 55 is calculated.

The first bonding step C1 including the steps (f) and (g) associated with this corresponds to the operations shown in the flow diagrams (vii) and (viii), and corresponds to the step (f) ( The position where the operation of vii) is performed is appropriately selected. For example, it can be performed at the first reference position β1. It can also be done at the first sticking position 101. Alternatively, it can be performed at the first sticking adjustment position γ1 located between these two positions. Here, it is assumed that the step (f) is performed at the first sticking adjustment position γ1. Then, in the step (f), the liquid crystal panel 5 readjusted to the first reference position β1 is conveyed to the first sticking adjustment position γ1 as the operation shown in the flowchart (vii) first. Next, the liquid crystal panel 5 uses the center line 500 of the liquid crystal panel 5 as the center line of the first optical film sheet 10 based on the first related position information 55 calculated by the control device 550 at the first sticking adjustment position γ1. From 700, 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 Then, they are pasted together so as to be removed by the amount y of the removal amount (FIG. 9).

By the way, a process (f) is sticking adjustment of the liquid crystal panel 5 with respect to the 1st optical film sheet 10 based on the 1st relevant position information 55 as operation | movement shown by the flowchart (vii). Where it can be done, as already pointed out, it can be done in advance at the first reference position β1 or at the first pasting position 101. Therefore, in the method of manufacturing the laminated body 6 of the optical display device configured in the steps (a) to (g), the liquid crystal panel 5 is moved at the first reference position β1 without passing through the sticking adjustment position γ1. Or, it goes without saying that 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.

As another aspect, the present invention is shown in steps (h) to (n) in FIG. 6 with the steps partially overlapping, and shown in the corresponding operations in the flow diagrams (ix) to (xvi) in FIG. It is.

In the present invention, the center line 500 of the liquid crystal panel 5 including the steps (h) to (n) is moved from the center line 600 of the transport path 30 to a terminal on one side of a long side set in advance as shown in FIG. The position moved in parallel by the adjustment amount y1 of the first optical film sheet 10 adjusted so as not to cover the portion 50 and to protrude from the other side except the one side of the long side of the liquid crystal panel 5 The second position adjusting step A2 to be adjusted, the second position detecting step B2 of the first optical film sheet 10, and the second optical plate sheet 10 which is bonded to the one surface 51 of the liquid crystal panel 5. No. bonding process C2.

In the second position adjustment step A2, the position adjustment between the center line 500 of the liquid crystal panel 5 and the center line 700 of the first optical film sheet 10 is performed as shown in FIG. Is moved by the adjustment amount y1 of the first optical film sheet 10 adjusted so as not to cover the terminal portion 50 on the side and to protrude from the other side except for one side of the long side of the liquid crystal panel 5. It is to adjust in advance to the position.

In the second position adjustment step A2 including steps (h) to (l), it is assumed that the liquid crystal panel 5 is transported to the first pasting position 101 in a state of being displaced from the center line 600 of the transport path 30. The Steps (i) and (j) correspond to the operation shown in the flow diagram (ix), and the liquid crystal panel 5 that is transported in a state of being displaced from the center line 700 of the transport path 30 by the amount of displacement λ. Once stopped, for example, the position adjusting means 70 is operated to correct the shift amount λ from the center line 700 of the transport path 30 of the liquid crystal panel 5, and then to the terminal portion 50 on one side of the long side set in advance. The center line 500 of the liquid crystal panel 5 is conveyed by an adjustment amount y1 of the first optical film sheet 10 that is adjusted so as not to be covered and to protrude from the other side excluding one side of the long side of the liquid crystal panel 5 Parallel movement from the center line 600 of the path 30 is performed to adjust the position to the second temporary reference position α2.

The step (k) corresponds to the operation of the flow chart (x). Here, the operation of the position adjusting means 70 is released, 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. 6, the second temporary reference position α2 and the second reference position β2 are the same as the second temporary reference position α2, which corrects the shift amount λ from the center line 700 of the transport path 30 of the liquid crystal panel 5, A correction position obtained by translating the center line 500 of the liquid crystal panel from the center line 600 of the transport path 30 by the adjustment amount y1, and the second reference position β2 further reads the position of the liquid crystal panel by the panel detection means 150 and corrects it. The re-correction position to which is added is shown. This is an operation included in the step (l).

Step (l) also corresponds to the operation of (xi). First, the panel detection means 150 reads a reference point 53 such as an alignment mark of the liquid crystal panel 5 and presets it in the panel detection means 150. In contrast to the second reference information 56, the liquid crystal panel 5 is readjusted to the second reference position β2. The step (l) also corresponds to the operation of (xii), and is related to the readjustment of the liquid crystal panel 5 and, as shown in FIG. Thus, the position of the first optical film sheet 10 is detected.

The second position detection step B2 comprising the step (l) related thereto further corresponds to the operations of (xiii) and (xiv), and as shown in the explanatory diagram of FIG. The operation is to calculate a displacement amount λ 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 second reference position β2, and the operation (xiv) As shown in the explanatory diagram of FIG. 9, the displacement amount λ is not covered with the terminal portion 50 on one side of the long side of the liquid crystal panel 5 and one side of the long side of the liquid crystal panel 5 is excluded. The second related position information 56 is calculated in consideration of the adjustment amount y1 of the first optical film sheet 10 adjusted so as to protrude from the other side.

The positions at which the steps (h) to (l) of FIG. 6 of the present invention are performed, specifically, the second temporary reference position α2 of the steps (i) and (j) and the second of the steps (k) and (l). The second reference position β2 corresponds to the left end position where the panel detecting means 150 shown in FIG. 3 is installed. For the liquid crystal panel 5 that has been transported from the upstream side to the step (h) in a state of being shifted from the center line 600 of the transport path 30, as the operation shown in the flowchart (ix) first, the position adjusting means 70 The misalignment of the liquid crystal panel is corrected, and the position adjustment is performed so that the liquid crystal panel is translated by a preset adjustment amount y1.

The position-adjusted liquid crystal panel 5 is positioned at the second reference position β2 as follows. Similarly, at this position, the liquid crystal panel 5 is sucked and fixed by the positioning means 80 as the operation (x). Similarly, as the operation of (xi), the liquid crystal panel 5 in the state of being attracted and fixed by matching the second reference information 56 preset in the panel detection means 150 is precisely readjusted to the second temporary reference position α2. Is made. Similarly, as the operation (xii), the first optical film sheet 10 is detected by the sheet detection means 90. Similarly, as the operations (xiii) and (xiv), the relative position between the detected position of the first optical film sheet 10 and the position of the liquid crystal panel 5 readjusted to the second temporary reference position α2. The information is calculated as the second related position information 57 in the control device 550.

The second bonding step C2 including the steps (m) and (n) associated with this corresponds to the operations shown in the flow diagrams (xv) and (xvi) and corresponds to the step (m) ( The position where the operation xv) is performed is appropriately selected. For example, it can be the second reference position β2. It can also be the first sticking position 101. Alternatively, it can be the second sticking adjustment position γ2 located between these two positions. Here, it is assumed that the step (m) is performed at the second sticking adjustment position γ2. Then, in step (m), the liquid crystal panel 5 readjusted at the second reference position β2 is transported to the second sticking adjustment position γ2 as the operation shown in the flowchart (xv) first. Next, the liquid crystal panel 5 makes the center line 500 of the liquid crystal panel 5 parallel to the center line 700 of the first optical film sheet 10 based on the calculated second related position information 57 at the second sticking adjustment position γ2. Thus, the sticking adjustment is performed on the first optical film sheet 10. 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 (xvi), the final step (n) 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 The sticking is performed so that the sticking amount y sticks out (FIG. 9).

By the way, the process (m) is to paste and adjust the liquid crystal panel 5 to the first optical film sheet 10 based on the second related position information 57 as the operation shown in the flowchart (xv). Where it can be done, as already pointed out, it can be done in advance at the second reference position β2 or at the first pasting position 101. Therefore, in the method of manufacturing the laminated body 6 of the optical display device configured in the steps (h) to (n), the liquid crystal panel 5 is moved to the second reference position without passing through the second sticking adjustment position γ2. Needless to say, it can be attached at the same time as the adjustment of the liquid crystal panel 5 by the second related position information 57 at β2 or at the first attaching position 101.

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 is further removed by the adjustment amount y1 of the first optical film sheet 10 adjusted so as to be removed from the other side excluding one side of the long side of the long side. It is pasted together. 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.

The present invention provides a method for manufacturing a laminate 6 of an optical display device in one aspect or another aspect. 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 off together with the pressure-sensitive adhesive layer from the second carrier film 3 of the continuous web 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 does not cover the terminal portion 50 formed on one side of the long side of the liquid crystal panel 5 on the one surface 51 of the liquid crystal panel 5 conveyed to the first sticking position 101. In addition, the liquid crystal panel 5 is bonded so as to stick out from the other side except for one side of the long 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: First reference information 55 preset for the panel detection means 55: First related position information 56: Second reference information 57 preset for the panel detection means 57: 2. Related position information δ: Deviation amount (deviation angle) between the center lines of the liquid crystal panel and the first optical film sheet included in the first reference information
λ: Deviation amount (deviation angle) between the center lines of the liquid crystal panel and the first optical film sheet included in the second reference information
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: transport path 100: first bonding device constituting the RTP device α1: first temporary reference position β1: first reference position γ1: first bonding 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 (alpha) 2: 2nd temporary reference position (beta) 2: 2nd reference position (gamma) 2: 2nd bonding adjustment position

61: Peeling means 81 for the second optical film sheet 81: Positioning means for the liquid crystal panel of the second laminating apparatus

Claims (10)

The first optical film laminate of the continuous web constituted in a state where the first optical film sheet is continuously supported on the first carrier film of the continuous web by the pressure-sensitive adhesive layer is drawn out, and the first optical film sheet is drawn out. The optical film sheet is peeled off from the first carrier film of the continuous web together with the pressure-sensitive adhesive layer and sent to the first sticking position, and the first side is moved to the first sticking position along the conveyance path with the short side as the front end face. the liquid crystal panel rectangular second optical film to the other surface of the liquid crystal panel is configured in a state where said bonded in advance so as not to overlap the alignment mark of the liquid crystal panel without issuing Hami from the other surface to be conveyed Te Affixed to one side of the LCD panel so that it does not cover the terminal part formed on one side of the long side of the liquid crystal panel and protrudes from the other side except the one side of the long side. A method for producing a laminate of the optical display device together,
The first optical film sheet and the second optical film sheet are both formed of a polarizing film, and are bonded to the liquid crystal panel so that their absorption axes are in a crossed Nicols relationship,
A first position adjusting step for adjusting the center line of the liquid crystal panel to coincide with the center line of the transport path;
A first position detecting step of the first optical film sheet;
Including a first bonding step of bonding the first optical film sheet to one surface of the liquid crystal panel,
In the first position adjustment step, the liquid crystal panel is adjusted to a first temporary reference position so that the center line of the liquid crystal panel coincides with the center line of the transport path, and the panel detection means further adjusts the reference of the liquid crystal panel. Read the point, readjust the liquid crystal panel to the first reference position based on the first reference information preset in the panel detection means,
The first position detecting step of related thereto, detects the position of the first optical film sheet by the sheet detection means, and further calculates the shift amount of the reconditioned liquid crystal panel in the first reference position The adjustment is made so that the amount of deviation does not cover the terminal portion on one side of the long side of the liquid crystal panel, and the other side excluding one side of the long side of the liquid crystal panel is exposed. Calculating the first related position information by adding the adjustment amount of the first optical film sheet;
In the first pasting step, the readjusted liquid crystal panel is transported from the first reference position to the first pasting position, and the first relevant position information is added to the first relevant position information. The liquid crystal panel so that the first optical film sheet does not cover the terminal portion of the liquid crystal panel and protrudes from the other side excluding one side of the long side of the liquid crystal panel. Is aligned with the first optical film sheet and bonded together. A continuous web comprising the second optical film sheet having a width or length that does not protrude from the other surface of the liquid crystal panel and is continuously supported on the second carrier film via an adhesive layer. The second optical film laminate is fed out, whereby the second optical film sheet is peeled off from the second carrier film of the continuous web together with the pressure-sensitive adhesive layer and sent to a second application position, 2. The liquid crystal panel that is separately transported along a transport path to the pasting position of No. 2 so that the liquid crystal panel is pasted in advance so as not to stick out from the other surface. The method described in 1. 3. The method according to claim 1, wherein one surface of the liquid crystal panel is a CF-side surface that becomes a viewing side, and the other surface is a TFT-side surface that becomes a non-viewing side. 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 one of claims 1 to 3, wherein the protruding portion, wherein the terminal portion is formed on the one surface side of the projecting portion to be. The first position adjusting step adjusts the liquid crystal panel to the first temporary reference position by bringing a position adjusting unit into contact with a long side of the liquid crystal panel from a side in a transport direction. Item 5. The method according to any one of Items 1 to 4. The first optical film laminate of the continuous web constituted in a state where the first optical film sheet is continuously supported on the first carrier film of the continuous web by the pressure-sensitive adhesive layer is drawn out, and the first optical film sheet is drawn out. The optical film sheet is peeled off from the first carrier film of the continuous web together with the pressure-sensitive adhesive layer and sent to the first sticking position, and the first side is moved to the first sticking position along the conveyance path with the short side as the front end face. Rectangular said liquid crystal panel on the other side of the liquid crystal panel is a second optical film composed of a state of bonding in advance so as not to overlap the alignment mark of the liquid crystal panel without issuing Hami from the other surface of the conveyed Te Affixed to one side of the LCD panel so that it does not cover the terminal part formed on one side of the long side of the liquid crystal panel and protrudes from the other side excluding the one side of the long side A method for producing a laminate of the optical display device together,
The first optical film sheet and the second optical film sheet are both formed of a polarizing film, and are bonded to the liquid crystal panel so that their absorption axes are in a crossed Nicols relationship,
The center line of the liquid crystal panel is not covered from the center line of the transport path to the terminal portion on one side of the long side set in advance, and one side of the long side of the liquid crystal panel is excluded. A second position adjustment step of adjusting the position of the first optical film sheet adjusted to be removed from the other side by the amount moved in parallel, and
A second position detecting step of the first optical film sheet;
A second laminating step of laminating the first optical film sheet on one surface of the liquid crystal panel,
The second position adjustment step adjusts the liquid crystal panel to a second temporary reference position so that the center line of the liquid crystal panel moves in parallel from the center line of the transport path by the preset adjustment amount. Furthermore, the panel detection means reads the reference point of the liquid crystal panel, and based on the second reference information preset in the panel detection means, the liquid crystal panel is readjusted to the second reference position,
The second position detection step related thereto detects the position of the first optical film sheet by a sheet detection means, and further calculates the amount of deviation from the liquid crystal panel readjusted to the second reference position, Do not cover the terminal portion on the one side of the long side of the liquid crystal panel, which is set in advance to the amount of displacement, and so that it protrudes from the other side other than the one side of the long side of the liquid crystal panel In consideration of the adjustment amount of the first optical film sheet adjusted to calculate the second related position information,
In the second pasting step associated therewith, the readjusted liquid crystal panel is transported from the second reference position to the first pasting position, and in the first pasting position, the second relevant position information is transferred. The liquid crystal panel so that the first optical film sheet does not cover the terminal portion of the liquid crystal panel and protrudes from the other side excluding one side of the long side of the liquid crystal panel. Is aligned with the first optical film sheet and bonded together. A continuous web comprising the second optical film sheet having a width or length that does not protrude from the other surface of the liquid crystal panel and is continuously supported on the second carrier film via an adhesive layer. The second optical film laminate is fed out, whereby the second optical film sheet is peeled off from the second carrier film of the continuous web together with the pressure-sensitive adhesive layer, and sent to a second application position. 7. The liquid crystal panel that is separately transported along the transport path to the second pasting position is pasted in advance so that the liquid crystal panel does not stick out from the other side. The method described in 1. 8. The method according to claim 6, wherein one surface of the liquid crystal panel is a CF-side surface that becomes the viewing side, and the other surface is a TFT-side surface that becomes the non-viewing side. 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 6 8, wherein the protruding portion, wherein the terminal portion is formed on the one surface side of the projecting portion to be. The second position adjusting step adjusts the liquid crystal panel to a translated position by bringing a position adjusting means into contact with the long side of the liquid crystal panel from the side in the transport direction. The method according to any one of 6 to 9.

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