KR102154006B1 - Stacked body of optical display device, manufacturing method and manufacturing system thereof - Google Patents

Abstract

An optical film is largely bonded to a liquid crystal panel to provide a laminate of an optical display device in which an excess portion of the optical film is left. The present invention is a laminate in which an optical film 10 having a first polarizing film and an optical film 20 having a second polarizing film are stacked on both sides of a rectangular liquid crystal panel 5 so that the absorption axis becomes a cross-Nichol relationship. (6), and a first optical film 10 having a width or length corresponding to the width or length of the liquid crystal panel 5 is laminated on the surface of the TFT side 52, which is one side of the liquid crystal panel 5, , A laminate 6 in which a second optical film having a width or length greater than at least one of the width or length of the liquid crystal panel 5 is laminated on the other side of the liquid crystal panel 5 on the side of the CF side 51 The laminate 6 is also characterized in that the second optical film 20 laminated on the surface of the CF side 51 is laminated so that it does not protrude from the one side 52y of the long sides of the TFT side 52. Have.

Description

Stacked body of optical display device, manufacturing method and manufacturing system thereof

The present invention relates to a laminate of an optical display device, a method of manufacturing the same, and a manufacturing system. More specifically, the present invention is a laminate of an optical display device in which an optical film having a polarizing film on both sides of a rectangular liquid crystal panel is laminated so that the absorption axis becomes a cross-Nichol relationship, and the polarizing film on one side of the liquid crystal panel is A laminate in which the optical film has a width or length corresponding to the width or length of the liquid crystal panel, and the optical film having the polarizing film on the other side of the liquid crystal panel has a width or length greater than at least one of the width or length of the liquid crystal panel , To the manufacturing method and manufacturing system.

In the manufacturing site of an optical display device, a roll-to-panel (RTP) method of manufacturing is employed (for example, Patent Document 1). In the RTP system, an optical display device is usually manufactured as follows. First, an optical film laminate having a predetermined width is fed out from a roll. The optical film laminate is constituted by including a carrier film, an adhesive layer formed on one surface of the carrier film, and an optical film supported on the carrier film through the adhesive layer. The optical film may be a single layer or a multiple layer. In the optical film layered product fed out, a cut line is normally inserted continuously in the width direction, thereby forming a sheet-like optical film between adjacent cut lines.

The optical film formed in the form of a sheet continuously supported on the carrier film is peeled from the carrier film together with the pressure-sensitive adhesive layer by a peeling means disposed near the bonding position and sent to the bonding position. In the peeling means, the carrier film side of the optical film layered product is wound up on the top of the substantially wedge-shaped peeling means having a top portion facing the bonding position. The optical film is peeled off together with the pressure-sensitive adhesive layer from the carrier film by conveying the carrier film wound around the peeling means in a direction substantially opposite to the conveying direction of the optical film toward the bonding position. The optical film that has reached the bonding position is bonded to the corresponding bonding surface by the panel conveyed to the bonding site separately by bonding means having a pair of bonding rollers.

On the other hand, in recent optical display devices, miniaturization, ultra-thinness, and weight reduction have progressed further, and accordingly, reduction in frame portions surrounding the liquid crystal display area, that is, not only narrow frame magnetization, but also no frame magnetization, is requested. As a method for complying with this request, for example, as described in Patent Document 2, an optical film larger than the liquid crystal panel is bonded to one side of the liquid crystal panel, and protruded from the end of the optical film bonded to one side of the liquid crystal panel. The excess part of the resulting optical film was cut along the end of the liquid crystal panel, and then an optical film larger than the liquid crystal panel was bonded to the other side of the liquid crystal panel with the optical film bonded on one side, and the optical film bonded to the other side of the liquid crystal panel. A technique has been proposed in which an excess portion of an optical film protruding from an end portion is cut off along an end portion of a liquid crystal panel, thereby manufacturing a laminate of an optical display device.

In Patent Document 2, the step of cutting off the excess portion is performed in a series of manufacturing apparatuses. Specifically, the excess part of the optical film that is sequentially bonded to both sides of the liquid crystal panel in the manufacturing device is laminated in a state protruding from all four sides of the both sides of the liquid crystal panel each time, and thus an optical display obtained as a result from the manufacturing device The device is a laminate in which all the excess portions of the four sides from both sides of the liquid crystal panel are cut along the ends of both sides of the liquid crystal panel so that the optical film has a size corresponding to the bonding surface.

Further, for example, as described in Patent Document 3 or Patent Document 4, a production system has been proposed in which an optical film is protruded and bonded to one side of a liquid crystal panel, and the other side of the liquid crystal panel is bonded without protruding. In these cases, the process of cutting off the excess part protruding from one side of the liquid crystal panel and bonding is performed in a series of production systems as in the case of Patent Document 2.

Specifically, the excess part of the optical film bonded to one side of the liquid crystal panel is laminated in a state protruding from all four sides of the liquid crystal panel, and the optical display device obtained as a result from the production system is bonded to one side of the liquid crystal panel. Patent document in which the optical film on both sides of the liquid crystal panel has a size corresponding to the bonding surface because the excess part of the optical film is cut off along the end of the liquid crystal panel, and the optical film bonded to the other side of the liquid crystal panel is bonded without protruding. It is a laminated body similar to the case of 2.

In the liquid crystal display device, the reason why the polarizing film is bonded on both sides of the liquid crystal panel along the reference line (alignment mark) so that the absorption axis becomes a cross-Nichol relationship is due to the light shutter function of the liquid crystal display device. As shown in the reference diagram of FIG. 8, the polarizing film also includes a display area, and has a size of a black matrix or an area exceeding the black matrix inside the liquid crystal panel.

The structure of the liquid crystal display device includes a member on the CF side of a liquid crystal panel including a glass substrate in which a color filter is interposed at least on both sides of a liquid crystal, and a glass substrate in which a light distribution film and a transparent electrode are interposed. And a member on the TFT side of the liquid crystal panel. Usually, one of the long sides of the TFT side of a liquid crystal panel is a terminal in which a transparent electrode is incorporated, and the CF side of the liquid crystal panel protrudes from the corresponding one side. A polarizing film is bonded to each of the glass substrate on the CF side and the glass substrate on the TFT side so that the absorption axis becomes a cross-Nichol relationship through an optical compensation film. Therefore, it becomes a transparent area|region except the area|region to which the polarizing film of a liquid crystal panel is bonded.

Japanese publication No. 4377964 Japanese Patent Publication No. 2014-228563 Japanese Patent Application Publication No. 2013-137538 Japanese Patent Publication No. 2014-224911

In the manufacturing apparatus and manufacturing method of the optical display device, in the manufacturing apparatus and manufacturing method of the RTP method, after bonding the liquid crystal panel and the optical film with the optical film protruding from the end of the liquid crystal panel, the excess part, which is the protruding part of the optical film, is removed from the liquid crystal panel. It is achieved by cutting along the ends.

However, as proposed in Patent Documents 2 to 4, in the case of cutting the excess part of the circumferential edge after protruding from the end of the liquid crystal panel in a series of production lines and bonding, it takes time to cut out all the excess part precisely. Therefore, productivity is remarkably reduced.

In addition, 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 circumferential edge (e.g., cut along the edge of the liquid crystal panel, install a protrusion of several millimeters). There is also a request that the customer himself wants to obtain the degree of freedom of whether or not to cut it off, and to cut off the excess part of the peripheral edge.

Therefore, it is desired to provide a laminate of an optical display device by leaving the excess portion of the optical film without cutting off the excess portion of the peripheral edge of the liquid crystal panel, which is largely bonded by protruding the optical film from the liquid crystal panel.

However, in the RTP method, if you want to provide a laminate by leaving the excess part of the optical film without cutting off the excess part of the peripheral edge of the liquid crystal panel among the series of production lines, the liquid crystal panel and the optical film are separated from the four sides of the liquid crystal panel. After bonding the liquid crystal panel and the optical film in a protruding state, in the case of an optical film with a polarizing film, the absorption axis of the polarizing film becomes a cross-Nichol relationship, so it is necessary to check the alignment mark that is the reference point of the display area of the liquid crystal panel. It becomes difficult. Therefore, it becomes difficult to align the liquid crystal panel and the polarizing film.

In addition, since the circumferential edge of the optical film becomes unstable due to flexibility in the laminated body leaving the excess part of the optical film, it is not possible to use a positioning means that contacts from the side in the conveying direction, and a complicated positioning mechanism must be prepared separately. .

All of the RTP-type manufacturing apparatus and manufacturing method described in Patent Document 2 to Patent Document 4 protrude from the liquid crystal panel during the manufacturing process or during the production system, and are bonded to cut off the entire excess part of the optical film, and manufactured therefrom. The optical display device obtained as a product is made of a laminate without protruding portions of the optical film without explanation.

In addition, the embodiment disclosed in Patent Literature 3 and Patent Literature 4 only discloses the configuration of bonding the polarizing film without protruding to the CF side after bonding the polarizing film by protruding from four sides on the TFT side. A structure in which a polarizing film is bonded without protruding to the side and then protruded to the CF side to bond a polarizing film is not disclosed.

An additional technical challenge is to provide a laminate of a liquid crystal display device in which the polarizing film is bonded without protruding to the CF side by protruding from the four sides only on the TFT side even in the manufacturing equipment or production system according to the customer's new request. In addition, it is not possible to eliminate the risk of damaging the portion in which the terminal on the TFT side is built when cutting off the excess portion of the protruding portion. In addition, when the excess portion is a laminate of all four sides, it is not possible to completely eliminate the risk of deformation in the liquid crystal panel position adjusting means immediately before the inspection portion and generating cracks or the like there. The present invention has also achieved such a challenge by challenging it.

The above subject is a laminate of an optical display device in which an optical film having a polarizing film on both sides of a rectangular liquid crystal panel is laminated so that the absorption axis becomes a cross-Nichol relationship, and the optical film on the side of the TFT side of the liquid crystal panel is The optical film on the CF side, which is the other side of the liquid crystal panel, has a width or length corresponding to the width or length of the liquid crystal panel, and can be solved by using a laminate having a width or length greater than at least one of the width or length of the liquid crystal panel. have. With such a laminate, the process of cutting off the excess portion of the laminated optical film protruding from the liquid crystal panel can be performed by a device different from that of a series of production devices, so that productivity can be significantly improved.

In addition, since the laminate of the present invention has a cross-Nichol relationship only at the location where the optical film on the surface of the TFT side and the optical film on the surface of the CF side overlap, the surface on the CF side in the outer circumference of the optical film on the TFT side It is possible to easily read the alignment mark of the liquid crystal panel and the edge of the liquid crystal panel by transmitting the optical film. Further, in the laminate of the present invention, since an optical film having a width or length greater than at least one of the width or length of the liquid crystal panel is laminated on the surface of the CF side serving as the viewing side when the display device is assembled, It is possible to make the viewer side free of frame by cutting off the excess portion of the optical film protruding from the panel and bonded.

The present invention provides a laminate of an optical display device in the embodiment. As shown in the schematic diagram of Fig. 1, specifically, it has an optical film 10 having a first polarizing film and a second polarizing film so that the absorption axis on both sides of the rectangular liquid crystal panel 5 becomes a cross-Nichol relationship. It is the laminated body 6 which laminated|stacked the optical film 20. In addition, a first optical film 10 having a width or length corresponding to the width or length of the liquid crystal panel 5 is bonded to the surface of the TFT side 52, which is one side of the liquid crystal panel 5, and the liquid crystal panel It is a laminate 6 in which a second optical film having a width or length greater than at least any one of the width or length of the liquid crystal panel 5 is bonded to the other side of (5) on the surface of the CF side 51. The laminate 6 is also laminated so that the second optical film 20 bonded to the surface of the CF side 51 does not protrude from the one side 52y of the long sides of the TFT side 52. With such a laminate, the position adjustment means 530 can be brought into contact with the one side 52y, so that the position adjustment of the laminate 6 becomes easy.

As is apparent from Fig. 1, the liquid crystal panel 5 is composed of a member on the CF side 51 and a member on the TFT side 52, and the laminate 6 is also a second optical film 20 that does not protrude. In the long side 52y of the member on the TFT side 52 of the liquid crystal panel 5, the member on the TFT side 52 has a protrusion 520 protruding from the member on the CF side 51 in the liquid crystal panel 5 A terminal 50 is formed on the surface 521 of the CF side of the protrusion 520, and the second optical film 20 bonded to the surface of the CF side 51 is the terminal 50 of the protrusion 520 It is a laminated body 6 joined so as not to be covered by ). In the case of such a laminate 6, compared to the laminate in which the second optical film 20 is bonded to cover the terminal 50 by bonding the second optical film 20 so as not to cover the terminal 50, the terminal ( There is no need to cut and remove the excess portion of the second optical film 20 covered with 50), so that there is no need to scratch the terminal 50.

In another embodiment, the present invention provides a method of manufacturing a laminate of an optical display device. As an embodiment of the present invention, as will be described in detail later, the method according to the RTP method shown in the schematic diagram of FIG. 4 and the flow diagram of FIG. 5, and the single-leaf type shown in the schematic diagram of FIG. 6 and the flow diagram of FIG. There is a method based on the 葉型) method. A method by the RTP method schematically showing the whole is shown in FIGS. 2 and 3.

The present invention is a method based on the configuration shown below, irrespective of whether the RTP method or the sheet-fed method is used.

Specifically, as shown in the schematic diagrams of FIGS. 2 and 3, the first polarized light supported by the pressure-sensitive adhesive layer on the first release film having a width or length corresponding to the width or length of the rectangular liquid crystal panel 5 A second release film that is a first optical film laminate 1 comprising an optical film 10 having a film, and a second release film having a width or length greater than at least one of the width or length of the liquid crystal panel 5 This is a method of manufacturing a laminate 6 of an optical display device using the second optical film laminate 2 comprising an optical film 20 having a second polarizing film supported thereon via an adhesive layer.

This method is a step omitted in FIGS. 4 and 5, or in FIGS. 6 and 7 as described later, but the pressure-sensitive adhesive layer from the first release film on the surface of the TFT side 52 of the liquid crystal panel 5 as an upstream step. A process that starts from the process of laminating the optical film 10 having the first polarizing film peeled off together, is a downstream process of the process, and is described in detail in FIGS. 4 and 5, or 6 and 7, That is, the agent peeled off together with the pressure-sensitive adhesive layer from the second release film so that the absorption axis on the surface of the CF side 51 of the liquid crystal panel 5 on which the optical film 10 having the first polarizing film is stacked becomes a cross-Nichol relationship. It includes the process of laminating the optical film 20 which has 2 polarizing films.

In this method, in the step of laminating the optical film 20 having the second polarizing film on the surface of the CF side 51 of the liquid crystal panel, the second optical film 20 is one of the long sides of the liquid crystal panel 5. It is laminated so as not to protrude from the side side 52y, and is conveyed toward the step of positioning the stacked body 6 of the liquid crystal panel 5 so that one side side 52y is parallel to the conveyance direction of the liquid crystal panel 5 , The step of adjusting the position of the liquid crystal panel 5 by contacting the position adjusting means 530 from the side of the conveyance direction of the stacked body 6 on the one side 52y, and the stacked body of the liquid crystal panel 5 after the step It may further include a step of inspecting the defect of (6).

This method is also in the process of laminating the optical film 20 having the second polarizing film on the surface of the CF side 51 of the liquid crystal panel, the liquid crystal panel 5 is the member of the CF side 51 and the TFT side 52 ), and in the liquid crystal panel 5 on one side 52y, a protrusion 520 in which the member of the TFT side 52 protrudes from the member on the CF side is formed, and the CF of the protrusion 520 The terminal 50 is formed on the side surface, and it is preferable to laminate the second optical film 20 so as not to cover the terminal 50.

In yet another embodiment, the present invention provides a system for manufacturing a laminate of an optical display device. The present invention is an embodiment, in detail, as described later, the system according to the RTP method shown in the schematic diagram of Fig. 4 and the flow diagram of Fig. 5, and the sheetfed type method shown in the schematic diagram of Fig. 6 and the flow diagram of Fig. By the system. The RTP system schematically showing the whole is shown in Figs. 2 and 3.

The present invention is a system based on the configuration shown below irrespective of whether the system is based on the RTP system or the single-leaf system.

Specifically, as shown in the schematic diagrams of Figs. 2 and 3, the system includes a transport means 300 for transporting the rectangular liquid crystal panel 5, and a TFT side 52 that is one side of the transported liquid crystal panel 5 ) On the surface of the liquid crystal panel 5, the first bonding portion 100 for laminating the optical film 10 having a first polarizing film having a width or length corresponding to the width or length of the liquid crystal panel 5, and the surface of the TFT side 52 At least one of the width or length of the liquid crystal panel 5 so that the absorption axis becomes a cross-Nichol relationship on the surface of the CF side 51 of the liquid crystal panel 5 on which the optical film 10 having the first polarizing film is laminated. It is a system comprising a second bonding portion 200 that laminates an optical film 20 having a second polarizing film having a width or length greater than one.

In the present system, the second optical film 20 laminated on the surface of the CF side 51 of the liquid crystal panel 5 in the second bonding portion 200 is from one side 52y of the long sides of the liquid crystal panel 5. It is laminated so as not to protrude, and the conveying part 100 conveys so that one side 52y is parallel to the conveying direction of the liquid crystal panel 5, and the side of the conveying direction of the liquid crystal panel 5 on the one side 52y A position adjusting unit 500 for positioning the liquid crystal panel 5 by contacting the position adjusting means 530 from, and an inspection unit 600 for inspecting defects in the laminate 6 of the position-adjusted liquid crystal panel 5 It may further include.

In this system, in the second bonding portion 200, the liquid crystal panel 5 is composed of a member on the CF side 51 and a member on the TFT side 52, and the liquid crystal panel 5 on the first side 52y A projection 520 is formed in which the member on the TFT side 52 protrudes from the member on the CF side, and a terminal 50 is formed on the surface 521 on the CF side of the projection 520, and on the terminal 50 It is preferable to laminate the second optical film 20 so as not to be covered.

1 is a schematic diagram of a laminate of an optical display device.
Fig. 2 is a schematic diagram showing an entire apparatus for manufacturing a laminate of an optical display device using the RTP method.
Fig. 3 is a schematic diagram of a second bonding portion constituting an apparatus for manufacturing a laminate of an optical display device according to the RTP method.
Fig. 4 is a schematic diagram showing an operation step of the second joint of Fig. 3.
5 is a flow diagram of the operation steps of FIG. 4.
Fig. 6 is a schematic diagram showing an operation step of a second joint by the single-leaf type system.
Fig. 7 is a flow chart of operation steps according to the single-leaf type system.
8 is a reference diagram showing a configuration of a bonding position of a polarizing film in a liquid crystal panel.

Hereinafter, a laminate of an optical display device according to the present invention, a method of manufacturing the same, and a manufacturing system will be described with reference to the drawings. 1 is a schematic diagram of a laminate of an optical display device of the present invention. 2 and 3 are schematic diagrams showing the entire manufacturing apparatus of a laminate of an optical display device according to the RTP method, and a schematic diagram of a second bonding portion constituting the manufacturing apparatus. For a schematic diagram of the entire manufacturing apparatus of a laminate of an optical display device according to the sheet-fed method and a schematic diagram of the second bonding portion constituting the manufacturing apparatus, FIGS. 2 and 2 are examples of a device for laminating a sheet-like optical film on a liquid crystal panel. Corresponding drawings are omitted so as to be easily assumed from 3 and not to complicate explanation.

Accordingly, Figs. 4 and 5, and Figs. 6 and 7 all have a width or length corresponding to the width or length of the liquid crystal panel 5 on the surface of the TFT side 52, which is one side of the liquid crystal panel 5 The process of bonding the optical film 10 having the first polarizing film (hereinafter referred to as the first optical film 10) or the liquid crystal panel 5 by the first bonding portion 100 of the liquid crystal panel 5 It is a figure which shows the process of bonding the optical film 20 (referred to as the 2nd optical film 20 hereafter) which has a 2nd polarizing film on the surface of the CF side 51 which is the other side, or the 2nd bonding part 200. That is, these drawings show a process of bonding a first optical film 10 having a width or length corresponding to the width or length of the liquid crystal panel 5 on the surface of the TFT side 52 of the liquid crystal panel 5 or the first It is a view in which the junction part 100 is omitted.

With reference to Fig. 2, the overall configuration of the apparatus A for manufacturing a laminate of an optical display device according to the RTP method will be briefly described. First, the rectangular liquid crystal panel 5 is sent to the 1st bonding part 100 from the conveyance means 300 from an upstream process. The width of the liquid crystal panel 5 peeled from the first optical film stack 1 fed through the wedge-shaped peeling means 60 having the top portion 61 at the bonding position 101 of the first bonding portion 100 Alternatively, the first optical film 10 having a width or length corresponding to the length is sent, and the first optical film 10 is sent to the first bonding position 101 of the TFT side 52 of the liquid crystal panel 5. It is bonded to the surface by the first bonding means 102.

Referring to Fig. 3, an overview of the operation in the second bonding portion 200 constituting the apparatus A for manufacturing a laminate of an optical display device according to the RTP method, and a brief description of the downstream process of the second bonding portion 200 do. The liquid crystal panel 5 in which the first optical film 10 is laminated on the surface of the TFT side of the liquid crystal panel in the first bonding portion 100 is a turning/reversing portion 150 (Fig. It is rotated by 90 degrees in 2), and is sent to the 2nd bonding part 200 by the conveyance means 300 in a reversed state.

At the bonding position 201 of the second bonding portion 200, the second optical film laminate 2 is fed through a wedge-shaped peeling means 60 having the same top portion 61 disposed on the first bonding portion 100. ), a second optical film 20 having a width or length greater than at least one of the width or length of the liquid crystal panel 5 is sent, and the second optical film 20 is sent to the bonding position 201. It is bonded to the surface of the CF side 51 of the liquid crystal panel 5 by the RTP bonding means 202.

The first optical film 10 laminated on the surface of the TFT side 52 of the liquid crystal panel 5 in the first bonding portion 100 does not protrude from the peripheral edge of the liquid crystal panel 5. On the other hand, the second optical film 20 laminated on the surface of the CF side 51 of the liquid crystal panel 5 so that the absorption axis in the second bonding part 200 becomes a cross-Nichol relationship is the circumference of the liquid crystal panel 5 It protrudes from the edge and is stacked. The liquid crystal panel on which the flexible optical film 20 is projected and laminated, that is, the laminate 6, must be carefully conveyed to a downstream process.

In the downstream process of the laminate 6 calculated from the second junction 200, at least the laminate 6 positioned by the positioning unit 500 is transmitted through the inside of the laminate with a camera device to check for defects, etc., In addition, lamination of the optical display device through the inspection unit 600 that reads the alignment mark 53 and inspects the attachment position of the first optical film 10 and/or the second optical film 20 to the liquid crystal panel 5. Sieve 6 is calculated.

Next, in the RTP method, how the second optical film 20 is protruded from the peripheral edge of the liquid crystal panel 5 on the surface of the CF side 51 of the liquid crystal panel 5 and laminated is illustrated in the schematic diagram of FIG. 4 and FIG. 5. It will be described below using the flow diagram of.

4 shows a state in which the first optical film 10 is already stacked on the surface of the TFT side 52 without protruding from the terminal 50 of the protruding portion 520 in the upstream process. Accordingly, step 1 shown in FIGS. 4 and 5 is peeled while winding the carrier film 3 (hereinafter referred to as the second carrier film 3) of the second release film of the second optical film stack 2 The second optical film 20 is peeled off from the second carrier film 3 using the means 60, and the second optical film 20 is protruded only by a predetermined distance. The predetermined distance becomes the bonding start position of the surface of the CF side 51 of the liquid crystal panel 5 of the second optical film 20. In step 2, the front end (or rear end) 20' of the second optical film 20 is specified as the sensor 90 in a protruding state.

Step 3 shown in FIGS. 4 and 5 is to adsorb and fix the liquid crystal panel 5 on which the first optical film 10 is laminated with the liquid crystal panel fixing means 310, and the liquid crystal panel position detection sensor 91 After specifying the position of the panel 5, the position of the liquid crystal panel fixing means 310 is adjusted according to the position of the second optical film 20 specified in step 1. In step 4, the liquid crystal panel 5 on which the first optical film 10 is laminated is released from the liquid crystal panel fixing means 310.

Step 5 shown in FIGS. 4 and 5 moves the front end 5'of the liquid crystal panel 5 to the bonding position 201 by the conveying means 300 of the liquid crystal panel 5. Step 6 is a bonding roller 203 and a bonding receiving roller 204 constituting the RTP bonding means 202, and the front end 5'of the liquid crystal panel 5 and the front end 20' of the second optical film 20 We pinch the inner point a little more.

Step 7 shown in FIGS. 4 and 5 operates the RTP bonding means 202 while winding the second carrier film 3, and the first bonding unit 100 with the second optical film 20 is The liquid crystal panel 5 on which the optical film 10 is laminated is bonded. As shown in FIG. 4, the second optical film 20 protrudes only from the short side of the liquid crystal panel 5 by a distance α, and becomes a pair of long sides in which the terminals 50 of the liquid crystal panel 5 are disposed. The bonding operation is started by protruding only the distance β from the side. In step 8, after the second optical film 20 is laminated on the liquid crystal panel 5 on which the first optical film 10 is laminated, the bonding roller 203 and the bonding receiving roller 204 are opened.

As shown in Fig. 1, the liquid crystal panel 5 is composed of a member on the CF side 51 and a member on the TFT side 52, and in the liquid crystal panel 5 on the one side side 52y, the TFT side 52 A protruding portion 520 in which the member of is protruded from the member on the CF side is formed, and a terminal 50 is formed on the surface 521 of the CF side of the protruding portion 520. Accordingly, the laminate 6 calculated through step 8 shown in FIGS. 4 and 5 is a terminal in the process of laminating the second optical film 20 on the surface of the CF side 51 of the liquid crystal panel 5. In order not to be covered by 50, the second optical film 20 is laminated with the second optical film 20 protruding from the three sides excluding the one side 52y of the long side of the liquid crystal panel 5 have.

In the sheet-fed method, how the second optical film 20 protrudes from the peripheral edge of the liquid crystal panel 5 on the surface of the CF side 51 of the liquid crystal panel 5 to be laminated is illustrated in FIG. When explained using the flow diagram of 7, it becomes as follows.

Step 1 shown in FIGS. 6 and 7 is a second optical film 20 in which a second release film 3 ′ is stacked through an adhesive layer formed in a sheet shape accommodated in the optical film receiving part 700. The sheet is taken out and placed on the first alignment table 701 with the side of the second release film 3'facing down. In step 2, after the first alignment table 701 adsorbs and fixes the second optical film 20 with the first adsorption fixing part 702, the front end 20 of the second optical film 20 is used with the optical film position sensor 92. ') is specified.

Step 3 shown in FIGS. 6 and 7 adjusts the position of the sheet-fed bonding means 703 according to the specified position of the tip 20' of the second optical film 20, and the sheet-fed bonding means 703 The second adsorption fixing part 704 of is brought into contact with the second optical film 20 side. Step 4 is to release the first suction fixing unit 702 of the first alignment table 701 after actuating the second suction fixing unit 704 of the single-leaf type bonding unit 703, and thus the single-leaf type bonding unit 703. Move. In step 5, the second release film 3'is peeled off from the second optical film 20 with a separate predetermined means (not shown) while being fixed to the sheet-fed bonding means 703.

In step 6 shown in FIGS. 6 and 7, the liquid crystal panel 5 on which the first optical film 10 is stacked is adsorbed and fixed to the second alignment table 705 by the third adsorption fixing part 706. The position of the panel 5 is specified by a single wafer type liquid crystal panel sensor 707. In the liquid crystal panel 5, the first optical film 10 is laminated on the surface of the TFT side of the liquid crystal panel 5 in the upstream process, and the third adsorption fixing part 706 of the second alignment table 705 is It is the surface of the TFT side 52 of the liquid crystal panel 5 that is suction-fixed.

Step 7 shown in FIGS. 6 and 7 tilts the sheet-fed bonding means 703 while fixing the second optical film 20 with the second adsorption fixing unit 704 of the sheet-fed bonding means 703, and then The tip of the liquid crystal panel 5 is slightly inside the front end 20' of the second optical film 20 with the bonding roller 703' of the sheet-fed bonding means 703 with the sheet-fed bonding means 703 inclined. Press (5'). In step 8, while pressing the bonding roller 703', the second alignment table 705 is moved for each liquid crystal panel, and the second suction fixing part 704 of the sheet-fed bonding means 703 is gradually released. It is laminated on the surface of the second optical film 20 and the CF side 51 of the liquid crystal panel 5.

In step 9 shown in FIGS. 6 and 7, the operation of laminating the second optical film 20 on the liquid crystal panel 5 is completed. In step 10, the second alignment zone 705 is released from the stacked body 6 calculated through step 9. Needless to say, as shown in Fig. 1, the surface 521 on the CF side of the protruding portion 520, in which the member on the TFT side 52 is formed to protrude from the member on the CF side, on the liquid crystal panel 5, has a terminal ( 50) is formed, and the calculated laminate 6 is a liquid crystal so that the second optical film 20 laminated on the surface of the CF side 51 of the liquid crystal panel 5 does not cover the terminal 50 It is laminated in a state where the second optical film 20 protrudes from the three sides excluding the one side 52y of the long side of the panel 5.

As described above, in the laminate 6 of the optical display device calculated both in the RTP method and in the single-leaf type method, the first optical film 10 of a normal size is formed on the surface of the TFT side 52 of the liquid crystal panel 5. It is stacked without protruding from the circumferential edge of the liquid crystal panel 5, whereas on the surface of the CF side 51 of the liquid crystal panel 5, it is disposed on the surface 521 of the CF side of the protruding portion 520 of the liquid crystal panel. It is a laminate in which second optical films 20 having a size protruding from the circumferential edges of the three sides of the liquid crystal panel 5 are stacked so that the terminal 50 is not covered.

Although the present invention has been described by way of examples and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following are described by those of ordinary skill in the technical field belonging to the present invention. Needless to say, various modifications and variations are possible within the equal scope of the claims.

A: An apparatus for manufacturing a laminate of an optical display device
1: 1st optical film laminated body 2: 2nd optical film laminated body
3: second carrier film 3': second release film
5: liquid crystal panel 5': the tip of the liquid crystal panel
50: terminal of the liquid crystal panel 51: CF side of the liquid crystal panel
52: TFT side of the liquid crystal panel 53: Alignment mark of the liquid crystal panel
52y: One side of the long side of the TFT side of the liquid crystal panel
520: projection on the TFT side of the liquid crystal panel 521: surface on the CF side of the projection
6: laminate
10: optical film (first optical film) having a first polarizing film
20: Optical film (2nd optical film) having a 2nd polarizing film
20': tip of the second optical film 60: peeling means
61: top of the peeling means
90: a front end (or rear end) detection sensor of the second optical film
91: liquid crystal panel position detection sensor 92: optical film position sensor
100: first bonding portion 101: first bonding position
102: first joining means 150: turning/reversing portion
200: second junction 201: junction position
202: RTP bonding means 203: bonding roller
204: bonding receiving roller 300: conveying means
310: liquid crystal panel fixing means 500: position adjustment unit
530: position adjustment means 600: inspection unit
630: perspective inspection camera 700: optical film storage unit
701: first alignment table 702: first suction fixing portion
703: single-leaf type bonding means 703': bonding roller of the single-leaf type bonding means
704: second adsorption fixing part 705: second alignment table
706: third adsorption fixing unit 707: sheet-fed liquid crystal panel sensor

Claims (12)

It is a laminate of an optical display device in which an optical film having a polarizing film on both sides of a rectangular liquid crystal panel is laminated so that the absorption axis becomes a cross-Nichol relationship,
The optical film on one side of the liquid crystal panel has a width or length that does not protrude from the liquid crystal panel,
The optical film on the other side of the liquid crystal panel has a width or length greater than at least one of the width or length of the liquid crystal panel,
Further, a laminate, wherein the optical film on one side of the liquid crystal panel does not overlap the alignment mark of the liquid crystal panel. The method of claim 1,
One side of the liquid crystal panel is a surface on the TFT side, and the other side of the liquid crystal panel is on a CF side. The method according to claim 1 or 2,
The optical film on the other side of the liquid crystal panel is laminated so as not to protrude from one of the long sides of the liquid crystal panel. The method of claim 3,
The liquid crystal panel is composed of a member on one side and a member on the other side, and in the long side of the liquid crystal panel from which the optical film does not protrude, the liquid crystal panel includes a member on one side from the member on the other side. A protruding part is formed, a terminal is formed on the other side of the protruding part, and the optical film is not covered by the terminal. A first optical film laminate comprising an optical film having a first polarizing film supported through an adhesive layer on a first release film having a width or length that does not protrude from one side of the rectangular liquid crystal panel,
A second optical film laminate comprising an optical film having a second polarizing film supported via an adhesive layer on a second release film having a width or length greater than at least one of the width or length of the other side of the liquid crystal panel. As a method of manufacturing a laminate of an optical display device using,
The second release film is long,
An optical film having the second polarizing film is continuously supported on the second release film,
Laminating an optical film having the first polarizing film peeled off from the first release film together with an adhesive layer on one side of the liquid crystal panel, and
Laminating the optical film having the second polarizing film peeled off together with the pressure-sensitive adhesive layer from the second release film so that the absorption axis becomes a cross-Nichol relationship on the other side of the liquid crystal panel on which the optical film having the first polarizing film is laminated Process,
A step of positioning the liquid crystal panel by bringing a positioning means into contact with the liquid crystal panel on which optical films are laminated on both sides after the step of laminating so as to become the relationship of the cross nicole;
Including the step of inspecting the liquid crystal panel after the step of positioning the liquid crystal panel,
In the process of laminating an optical film having the second polarizing film on the other side of the liquid crystal panel, the optical film is laminated so as not to protrude from one side of the long side of the liquid crystal panel, and the first side of the liquid crystal panel The liquid crystal panel is conveyed toward a step of positioning the liquid crystal panel so as to be parallel to the conveying direction, and the liquid crystal panel is positioned by contacting the positioning means to the one side from the side of the conveying direction of the liquid crystal panel. How to do it. The method of claim 5,
One surface of the liquid crystal panel is a surface on the TFT side, and the other surface of the liquid crystal panel is a surface on the CF side. The method according to claim 5 or 6,
The liquid crystal panel is composed of a member on one side and a member on the other side, and on the one side, the liquid crystal panel has a protrusion in which the member on the one side protrudes from the member on the other side, and the protrusion portion A terminal is formed on the other side of the method, characterized in that the optical film having the second polarizing film is laminated so as not to cover the terminal. A conveying means for conveying a rectangular liquid crystal panel, and
A first bonding portion for laminating an optical film having a first polarizing film having a width or length that does not protrude from one side of the liquid crystal panel on one side of the liquid crystal panel to be conveyed, and
A second polarization having a width or length greater than at least one of the width or length of the other side of the liquid crystal panel so that the absorption axis on the other side of the liquid crystal panel on which the optical film having the first polarizing film is laminated is a cross-Nichol relationship A system for manufacturing a laminate of an optical display device comprising a second bonding portion for laminating an optical film having a film,
An optical film having the second polarizing film is continuously supported on a long second release film,
A conveying part which is laminated so that the optical film does not protrude from one side of the long side of the liquid crystal panel in the second bonding part, and conveys the one side side so as to be parallel to the conveying direction of the liquid crystal panel;
A position adjusting unit that adjusts the position of the liquid crystal panel by contacting a position adjusting means on the one side side from a side in the conveyance direction of the liquid crystal panel;
And an inspection unit for inspecting the position-adjusted liquid crystal panel. The method of claim 8,
One side of the liquid crystal panel is a surface on the TFT side, and the other side of the liquid crystal panel is on a CF side. The method of claim 8 or 9,
The liquid crystal panel is composed of a member on one side and a member on the other side, and on the one side, the liquid crystal panel has a protrusion in which the member on the one side protrudes from the member on the other side, and the protrusion portion A production system, wherein a terminal is formed on the other side of and an optical film having the second polarizing film is laminated so as not to cover the terminal. delete delete

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