JP5195385B2 - Protection plate integrated display panel manufacturing equipment - Google Patents

Description

  The present invention relates to an apparatus for manufacturing a protection panel integrated display panel.

  As a display panel in which an observation surface protection plate is arranged on the observation side of a display element that displays an image, there is a protection plate integrated display panel in which the display element and the protection plate are joined together by an adhesive layer.

In this protection plate integrated display panel, the display element and the protection plate are laminated with an adhesive layer made of unpolymerized resin or the like interposed therebetween, and the laminate is pressed from one surface side. Thus, the display element and the protective plate are manufactured by bonding with the adhesive layer (see Patent Document 1).
JP-A-6-337411

  The protective plate-integrated display panel, when manufactured, has air bubbles trapped between the display element and the adhesive layer or between the protective plate and the adhesive layer, thereby generating bubbles, thereby reducing display quality. There is.

  The present invention relates to a protection plate integrated display capable of obtaining a protection panel integrated display panel with good display quality by bonding a display element and an observation surface protection plate without causing bubbles between the adhesive layer. The object is to provide a panel manufacturing apparatus.

According to a first aspect of the present invention, there is provided a manufacturing apparatus for a protective plate integrated display panel, in which an adhesive layer is interposed between a display element and a protective plate disposed on one side of the display element. forming a production apparatus of the protective plate integrated display panel that makes joined by the adhesive layer and the protective plate and the display element by pressurizing the laminate from one side, the one of the laminate The joining jig placed on the surface includes a grid-like frame member in which through holes are arranged in a row direction and a column direction in a region corresponding to the adhesive layer, and the through holes in a predetermined row of the frame member. And a second elastic member that is softer than the first elastic member and fitted in the through-holes in the other rows of the frame members. Features.

According to a second aspect of the present invention, in the manufacturing apparatus of the protection plate integrated display panel according to the first aspect, the through holes of the frame member are provided in at least three rows, and the planar shape is a square shape. Alternatively, it is formed in a rectangular shape and is composed of a square hole having the same planar shape and the same length in the thickness direction of the frame member .
According to a third aspect of the present invention, in the manufacturing apparatus of the protection plate integrated display panel according to the first or second aspect, the through-hole of the frame member is formed in the through-hole in a central row. A first elastic member is fitted, and the second elastic member is fitted in the through hole in a row other than the central portion.

According to a fourth aspect of the present invention, in the protection plate integrated display panel manufacturing apparatus according to any one of the first to third aspects, the elastic member is slidable in the thickness direction of the frame member. Thus, it is fitted in the through hole .
According to a fifth aspect of the present invention, in the manufacturing apparatus for a protection plate integrated display panel according to any one of the first to fourth aspects, the elastic member has a lower end portion than an upper end portion. Is formed in a shape in which a step surface is formed between the upper end portion and the lower end portion, and the through hole of the frame member is formed on the inner periphery of the lower end side of the elastic member. It is formed in the shape which formed the elastic member removal prevention part which receives a step surface.
According to a sixth aspect of the present invention, in the protection plate integrated display panel manufacturing apparatus according to any one of the first to fifth aspects, the first elastic member is a molded product made of hard rubber. The second elastic member is a molded article made of rubber softer than the first elastic member.

According to a seventh aspect of the present invention, in the manufacturing apparatus of the protection plate integrated display panel according to the fifth aspect , the joining jig has a lower surface of the frame member opposed to the laminated body, and the With the lower surface and the end surface of the lower end side portion of the elastic member in contact with the one surface of the laminate, the upper end side portion of the elastic member protrudes on the frame member, It is placed on the one surface of the laminate .
The invention according to claim 8 is the manufacturing apparatus of the protection plate integrated display panel according to any one of claims 1 to 7, wherein the joining jig has an outer shape larger than a planar shape of the adhesive layer. It is characterized by that.

According to a ninth aspect of the present invention, in the protection plate-integrated display panel manufacturing apparatus according to any one of the first to eighth aspects, the joint jig moves on the joining jig from one end to the other end in the row direction. A pressure roller that sequentially presses the first elastic member and the second elastic member in the order of arrangement in the row direction and presses the elastic member against the one surface of the laminate. Features.
According to a tenth aspect of the present invention, in the apparatus for manufacturing a protection plate integrated display panel according to the ninth aspect, the pressure roller is arranged in a row of roller shafts and the elastic members of the joining jig. And a roller body mounted on the roller shaft having a corresponding length across the roller shaft, wherein the roller body has a uniform hardness over the entire length.

According to an eleventh aspect of the present invention, in the manufacturing apparatus of the protection plate integrated display panel according to the ninth aspect , the pressure roller includes a roller shaft and an array row of the first elastic members of the joining jig. And a plurality of divided roller bodies mounted on the roller shaft that are divided in correspondence with the array rows of the second elastic members, and the first elastic members of the divided roller bodies The divided roller bodies corresponding to the array rows and the divided roller bodies corresponding to the array rows of the second elastic members have different hardnesses .
The invention according to claim 12 is the manufacturing apparatus of the protection plate integrated display panel according to claim 11, wherein the joining jig is arranged on both sides of the row of the first elastic members. An arrangement of the second elastic members adjacent to each other among the divided roller bodies of the pressure roller has at least two arrangement rows of the second elastic members that are softer than the first elastic members. One of the divided roller bodies corresponding to the row and the other have different hardnesses.

  According to the protective plate integrated display panel manufacturing apparatus of the present invention, the display element and the observation surface protective plate are joined to the adhesive layer without generating bubbles, and the protective plate integrated type with good display quality is obtained. A display panel can be obtained.

(First embodiment)
FIG. 1 is a cross-sectional view of a protection plate integrated display panel. The protection plate integrated display panel includes a display element 1 for displaying an image, and an observation surface protection plate 6 disposed on the observation side of the display element 1. Are bonded by an adhesive layer 7 provided therebetween.

  The display element 1 is, for example, a liquid crystal display element. The display element 1 is opposed to each other with a predetermined gap, and is paired with a transparent side on the opposite side and an observation side joined via a frame-shaped sealing material 4 surrounding the screen area. It consists of substrates 2 and 3 and a liquid crystal layer 5 enclosed in a region surrounded by the sealing material 4 in the gap between the substrates 2 and 3. Although not shown in FIG. 1, the liquid crystal display element 1 includes a pair of polarizing plates disposed on the outer surfaces of the pair of substrates 2 and 3.

  The liquid crystal display element 1 is an active matrix liquid crystal display element using TFTs (thin film transistors) as active elements. Although omitted in FIG. 1, the liquid crystal display element 1 is formed on the inner surface of one substrate, for example, the substrate 3 opposite to the observation side. A plurality of transparent pixel electrodes arranged in a row direction and a column direction, a plurality of TFTs arranged corresponding to these pixel electrodes and connected to the corresponding pixel electrodes, and a TFT in each row A plurality of scanning lines for supplying gate signals and a plurality of signal lines for supplying data signals to the TFTs in each column are provided, and the plurality of pixel electrodes are arranged on the inner surface of the other substrate, for example, the substrate 2 on the observation side. A single film-like transparent counter electrode facing the array region is provided.

  Further, although omitted in FIG. 1, the inner surface of the observation-side substrate 2 has red, green, and red corresponding to a plurality of pixels each having a region in which the plurality of pixel electrodes and the counter electrode face each other. Three blue color filters are provided, and the counter electrode is formed on the color filter.

  The observation surface protection plate 6 is made of tempered glass or the like, and is formed in a rectangular shape larger than the outer shape of the observation side surface of the liquid crystal display element 1.

  Further, the adhesive layer 7 is made of, for example, a transparent double-sided pressure-sensitive adhesive sheet, and has substantially the same shape as that of the observation side surface of the liquid crystal display element 1 or the observation side surface of the liquid crystal display element 1. The outer shape is smaller than the outer shape and larger than the screen area.

  The protective plate integrated display panel is formed by laminating the liquid crystal display element 1 and the protective plate 6 with the adhesive layer 7 interposed therebetween, and pressurizing the laminated body from one surface side. The display element 1 and the protective plate 6 are manufactured by bonding with the adhesive layer 7.

  2 to 5 show a first embodiment of the present invention, FIG. 2 is a perspective view of a manufacturing apparatus for manufacturing the protective plate integrated display panel, and FIG. 3 is a joint constituting the manufacturing apparatus. FIG. 4 is an enlarged cross-sectional view of a part of the joining jig. 2 and 3, the liquid crystal display element 1 is simplified.

  As shown in FIG. 2, the manufacturing apparatus includes a joining jig 10 placed on one surface of a laminate in which the liquid crystal display element 1 and the protective plate 6 are laminated with the adhesive layer 7 interposed therebetween. It has.

  As shown in FIG. 3, the joining jig 10 has an outer shape larger than the planar shape of the adhesive layer 7, and a plurality of through holes 12 are arranged in the row direction and the column at least in the entire region corresponding to the adhesive layer 7. A grid-like frame member 11 arranged in a direction and a plurality of through holes 12 in a predetermined row of the frame member 11 can slide in the axial direction (thickness direction of the frame member 11). A plurality of first elastic members 13 fitted to the first elastic member 13 and softer than the first elastic member 13, and slide in the axial direction in the plurality of through holes 12 in the other rows of the frame members 11, respectively. It consists of a plurality of second elastic members 14 fitted in a possible manner.

  The frame member 11 is a molded product made of hard resin, or a combination of a plurality of strip-shaped metal plates in a lattice shape, and the plurality of through holes 12 are provided in at least three rows. The frame member 11 of this embodiment is provided with the plurality of through holes 12 arranged in 6 rows and 7 columns, and each of the through holes 12 has a square shape or a rectangular shape in plan view. It consists of a square hole having the same planar shape and axial length.

  Further, each of the plurality of first elastic members 13 is a molded product made of relatively hard rubber, and each of the plurality of second elastic members 14 is a molding made of rubber softer than the first elastic member 13. These elastic members 13 and 14 are formed in a square bar shape having the same flat area corresponding to the planar shape of the through hole 12 and a length slightly larger than the axial length of the through hole 12. ing.

  A plurality of first elastic members (hereinafter referred to as hard elastic members) 13 made of relatively hard rubber are provided at the center of the plurality of through holes 12 in each row provided in the frame member 11. A plurality of second elastic members (hereinafter referred to as “soft elastic members”) 14, which are respectively fitted in the plurality of through holes 12 in the row and made of the soft rubber, are arranged in two rows on each side of the frame member 11. The through holes 12 are respectively fitted.

  The joining jig 10 composed of the frame member 11 and the plurality of hard elastic members 13 and soft elastic members 14 is a laminate in which the liquid crystal display element 1 and the protective plate 6 are laminated with the adhesive layer 7 interposed therebetween. On one surface of the body, one surface (hereinafter referred to as a lower surface) of the frame member 11 is opposed to the laminated body, and the lower surface of the frame member 11 and the plurality of hard elastic members 13 and soft elastic members 14 A lower end surface (an end surface on the lower surface side of the frame member 11) is brought into contact with one surface of the laminated body, and upper end side portions (hereinafter referred to as heads) of the plurality of hard elastic members 13 and soft elastic members 14 are contacted. ) Is projected on the frame member 11.

  Each of the plurality of hard elastic members 13 and soft elastic members 14 is formed such that the lower end side is slightly narrower than the upper end portion (hereinafter referred to as the head portion) and the lower end side portion. A step surface 13a, 14a is formed between the head portion and the plurality of through holes 12 of the frame member 11, respectively, on the inner periphery on the lower end side thereof, the step surface of the elastic members 13, 14 13a, 14a is formed in a shape that forms an elastic member retaining portion 12a. Therefore, when the joining jig 10 is placed on one surface of the laminate, the elastic members 13, 14 are It does not fall out of the frame member 11.

  Further, as shown in FIG. 2, the manufacturing apparatus of this embodiment moves on the joining jig 10 placed on one surface of the laminated body from one end to the other end in the row direction. And a pressing roller 15 that presses the hard elastic member 13 and the soft elastic member 14 sequentially in the order of arrangement in the row direction and presses the elastic members 13 and 14 against the one surface of the laminate. ing.

The pressure roller 15 includes a roller shaft 16 and a roller body 17 having a length corresponding to the arrangement row of the elastic members 13 and 14 of the joining jig 10 and mounted on the roller shaft 16. The roller body 17 is made of hard rubber having a uniform hardness over its entire length.

  The manufacturing apparatus includes a laminate in which the liquid crystal display element 1 and the protective plate 6 are laminated with an adhesive layer (hereinafter, referred to as a double-sided pressure-sensitive adhesive sheet) 7 made of the double-sided pressure-sensitive adhesive sheet interposed therebetween. It is an apparatus for joining the liquid crystal display element 1 and the protective plate 6 with the double-sided pressure-sensitive adhesive sheet 7 by applying pressure from one surface side, and the protective plate-integrated display panel is manufactured by the following procedure.

  First, on either the surface on the observation side of the liquid crystal display element 1 or the surface of the protective plate 6 facing the liquid crystal display element 1, for example, the surface on the observation side of the liquid crystal display element 1, both surfaces are separated (separated). The double-sided pressure-sensitive adhesive sheet 7 protected with paper) is peeled off and attached to the separator on one side, and then the separator on the other side of the double-sided pressure-sensitive adhesive sheet 7 is peeled off. The protective plate 6 is stacked.

  The double-sided pressure-sensitive adhesive sheet 7 is attached to the observation-side surface of the liquid crystal display element 1 by curving the flexible double-sided pressure-sensitive adhesive sheet 7 and pressing the liquid crystal display element 1 sequentially from one end side to the liquid crystal display element 1. In this way, the double-sided pressure-sensitive adhesive sheet 7 can be attached to the observation-side surface of the liquid crystal display element 1 without trapping air therebetween.

  On the other hand, since the protective plate 6 is disposed on the double-sided pressure-sensitive adhesive sheet 7 attached to the observation side surface of the liquid crystal display element 1, air is interposed between the double-sided pressure-sensitive adhesive sheet 7 and the protective plate 6. It remains.

  Next, on one surface of a laminate in which the liquid crystal display element 1 and the protective plate 6 are laminated with the double-sided pressure-sensitive adhesive sheet 7 interposed therebetween, for example, the surface opposite to the observation side of the liquid crystal display element 1 On top of this, the joining jig 10 is placed as shown in FIG. 2, and the pressure roller 15 is brought into contact with one end in the row direction of the joining jig 10 by applying a predetermined load. 15 is rotated while keeping the load constant and moved from one end to the other end in the row direction.

  In this way, when the pressure roller 15 is moved from one end to the other end in the row direction while keeping the pressing force to the joining jig 10 constant, the plurality of hard elastic members 13 and the plurality of the joining jig 10 are arranged. As the pressure roller 15 moves, the soft elastic members 14 are sequentially pressed in the order of arrangement in the row direction, and the elastic members 13 and 14 are placed on one side of the laminate (the liquid crystal display element 1). It is pressed against the surface opposite to the observation side).

  Therefore, with the movement of the pressure roller 15, the liquid crystal display element 1 sequentially removes residual air remaining between the double-sided pressure-sensitive adhesive sheet 7 from one end side in the row direction, and the double-sided pressure-sensitive adhesive sheet 7. To the double-sided pressure-sensitive adhesive sheet 7.

  At this time, the plurality of elastic members 13 in the central two rows of the joining jig 10 are hard elastic members made of relatively hard rubber, and the plurality of elastic members in two rows on both sides of the joining jig 10. Since each of the members 14 is a soft elastic member made of a softer rubber than the hard elastic member 13, a central portion corresponding to the row of the hard elastic members 13 of the joining jig 10 in the liquid crystal display element 1 is The pressure between the liquid crystal display element 1 and the double-sided pressure-sensitive adhesive sheet 7 is pressed against the double-sided pressure-sensitive adhesive sheet 7 more strongly than both sides corresponding to the rows of the soft elastic members 14 of the joining jig 10, and the pressure roller In accordance with the movement of the pressure roller 15, the pressure roller 15 is removed in the traveling direction (the other end direction in the row direction) and the both sides of the double-sided pressure-sensitive adhesive sheet 7.

  FIG. 5 is a conceptual diagram showing exclusion of residual air between the liquid crystal display element 1 and the double-sided pressure-sensitive adhesive sheet 7, and the residual air is caused by the hard elastic member 13 as indicated by an arrow in the figure. It is pushed out from the pressed part to the advancing direction of the pressure roller 15 and to the part pressed by the soft elastic member 14, and further from the part pressed by the soft elastic member 14 to the advancing direction and both sides of the pressure roller 15. The pressure-sensitive adhesive sheet 7 is extruded in both directions, and is finally removed around the double-sided pressure-sensitive adhesive sheet 7.

  Therefore, the liquid crystal display element 1 is attached to the double-sided pressure-sensitive adhesive sheet 7 without confining air therebetween, and the liquid crystal display element 1 and the protective plate 6 are bonded by the double-sided pressure-sensitive adhesive sheet 7. it can.

  In addition, after joining the said liquid crystal display element 1 and the protective plate 6 with the double-sided adhesive sheet 7, it is desirable to perform an autoclave process (heating process), and residual air can be excluded more reliably by this autoclave process. it can.

  Therefore, according to the manufacturing apparatus, the liquid crystal display element 1 and the protective plate 6 are joined to the double-sided pressure-sensitive adhesive sheet 7 as an adhesive layer without generating bubbles, and the protective plate with good display quality is obtained. A body-type display panel can be obtained.

(Second Embodiment)
FIG. 6 is a perspective view of a protective plate integrated display panel manufacturing apparatus according to a second embodiment of the present invention. In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

  The manufacturing apparatus of this embodiment includes a joining jig 10 having the same configuration as that of the first embodiment, and further, a pressure roller for pressing the plurality of hard elastic members 13 and the soft elastic member 14 of the joining jig 10. As described above, a plurality of divided roller bodies 20 a that are divided in accordance with the roller shaft 19 and the array rows of the hard elastic members 13 and the soft elastic members 14 of the joining jig 10 and are attached to the roller shaft 19. 20b, of the divided roller bodies 20a and 20b, the divided roller body 20a corresponding to the row of the hard elastic members 13 and the divided roller body 20b corresponding to the row of the soft elastic members 14; Are provided with divided pressure rollers 18 having different hardnesses.

  In this manufacturing apparatus, the divided pressure roller 18 is brought into contact with one end in the row direction of the joining jig 10 by applying a predetermined load to the roller shaft 19, and the divided pressure roller 18 is The liquid crystal display element 1 and the protective plate 6 are bonded to each other by the double-sided pressure-sensitive adhesive sheet 7 by rotating and driving from one end to the other end in the row direction while keeping the load constant.

  In the manufacture of the protective plate integrated display panel by this manufacturing apparatus, the laminate in which the liquid crystal display element 1 and the protective plate 6 are laminated with the double-sided pressure-sensitive adhesive sheet (adhesive layer) 7 interposed therebetween is provided. A central portion corresponding to the row of the hard elastic members 13 on one surface on which the joining jig 10 is placed, for example, the surface opposite to the observation side of the liquid crystal display element 1 is added to the roller shaft 19. The hard elastic member 13 is pressed with a pressing load corresponding to the hardness of the divided roller body 20a corresponding to the array row of the hard elastic members 13 and the hardness of the hard elastic members 13 (hereinafter referred to as axial load). The central portion corresponding to the row is pressed by the axial load and the pressing force corresponding to the hardness of each of the divided roller body 20b and the soft elastic member 14 corresponding to the arrangement row of the soft elastic members 14.

  In this manufacturing apparatus, the hardness of the split roller body 20a corresponding to the array row of the hard elastic members 13 of the split pressure roller 18 and the hardness of the split roller body 20b corresponding to the array row of the soft elastic members 14 are respectively. The pressing force corresponding to the shaft load and the hardness of each of the divided roller body 20a and the hard elastic member 13 is more than the pressing force corresponding to the hardness of the shaft load and the divided roller body 20b and the soft elastic member 14. Therefore, similarly to the manufacturing apparatus of the first embodiment, the residual air between the liquid crystal display element 1 and the double-sided pressure-sensitive adhesive sheet 7 is finally changed to the double-sided pressure-sensitive adhesive sheet. 7, and the liquid crystal display element 1 and the protective plate 6 are joined to the double-sided pressure-sensitive adhesive sheet 7 as an adhesive layer without causing bubbles, and a protective plate with good display quality is obtained. It is possible to obtain a type display panel.

The manufacturing apparatus of this embodiment includes a plurality of divided roller bodies 20a and 20b that are divided corresponding to the array rows of the hard elastic members 13 and the array rows of the soft elastic members 14 of the joining jig 10, respectively. The split roller bodies 20a and 20b are provided with the split type pressure roller 18 in which the hardnesses of the split roller bodies 20a and 20b are different from each other. Therefore, by selecting the hardness of each of the split roller bodies 20a and 20b, The difference between the pressing force of the portion corresponding to the row of the elastic members 13 and the pressing force of the portion corresponding to the row of the soft elastic members 14 can be arbitrarily set.

That is, the hardness of the split roller bodies 20a and 20b of the split type pressure roller 18 corresponds to the row of the soft elastic members 14 rather than the pressing force of the portion corresponding to the array row of the hard elastic members 13 of the laminate. As long as the condition that the pressing force of the portion becomes weak is satisfied, the hardness of any of the divided roller bodies may be increased. For example, the hardness of the divided roller body 20a corresponding to the array row of the hard elastic members 13 Is increased, the difference in pressing force between the portion corresponding to the array row of the hard elastic members 13 and the portion corresponding to the row of the soft elastic members 14 of the laminate is increased, and conversely, the soft elasticity By increasing the hardness of the divided roller body 20b corresponding to the arrangement row of the members 14 , the pressing of the portion corresponding to the arrangement row of the hard elastic members 13 and the portion corresponding to the row of the soft elastic members 14 of the laminated body is performed. With power It can be reduced.

  In the manufacturing apparatus of this embodiment, when the joining jig 10 has at least two array rows of the soft elastic members 14 on both sides of the array rows of the hard elastic members 13, respectively. One of the divided roller bodies 20b and 20b corresponding to the array row of the adjacent soft elastic members 14 among the plurality of divided roller bodies 20a and 20b of the divided pressure roller 18 has a different hardness. It is also possible to have a roller body, and by doing so, the pressing force of the portions respectively corresponding to the array rows of the adjacent soft elastic members 14 of the laminate corresponds to the inner rows of these array rows. It is possible to set the pressing force of the portion corresponding to the outer row to be weaker than the pressing force of the portion to be performed.

(Other embodiments)
In the above embodiment, the liquid crystal display element 1 and the protective plate 6 are laminated with the double-sided pressure-sensitive adhesive sheet 7 interposed therebetween. The joining jig 10 is placed on the surface opposite to the side, but the joining jig 10 is placed on the other surface of the laminate, that is, the surface facing the observation side of the protective plate 6. The protective plate 6 may be pressed by the plurality of hard elastic members 13 and soft elastic members 14.

  In the above embodiment, the frame member 11 of the joining jig 10 is provided with a plurality of through holes 12 having the same planar shape and axial length arranged in the row direction and the column direction. Although the hard elastic member 13 and the soft elastic member 14 having the same plane area are fitted, the through hole 12 for fitting the hard elastic member 13 of the frame member 11 and the through hole for fitting the soft elastic member 14 are fitted. Even if the planar shapes of the holes 12 are different from each other, and the hard elastic members 13 and the soft elastic members 14 having different plane areas corresponding to the planar shapes of the respective through holes 12 are fitted in these through holes 12, respectively. Good.

  Further, in the joining jig 10 of the above embodiment, the hard elastic members 13 are fitted into the plurality of through holes 12 in the center row among the through holes 12 of the frame member, and the plurality of through holes 12 in the rows on both sides are fitted. Each of the joining jigs 10 is fitted with the soft elastic members 14 in the plurality of through holes 12 in the central row, and the plurality of through holes in both rows. 12 may be provided with the hard elastic member 13 fitted thereto, and by providing such a joining jig 10, residual air between the liquid crystal display element 1 and the double-sided pressure-sensitive adhesive sheet 7 is removed from the center of the joining jig 10. The air can be collected in an area corresponding to the line and the air can be pushed out of the double-sided pressure-sensitive adhesive sheet 7 as the pressure rollers 15 and 18 move in the line direction.

Furthermore, in the above embodiment, the joining jig 10 is formed with the rows of the hard elastic members 13 and the rows of the soft elastic members 14, but the joining jig 10 has two different hardnesses. it may form a line of more elastic members.

Further, the manufacturing apparatus of the present invention may include only the joining jig 10, and in that case, for example, in a sealed container, the liquid crystal display element 1 , the protective plate 6, On the one surface (the surface opposite to the observation side of the liquid crystal display element 1 or the surface facing the observation side of the protective plate 6) of the laminated body laminated with the double-sided adhesive sheet 7 interposed therebetween. 10 and then returning the inside of the container to atmospheric pressure, the elastic members 13 and 14 of the joining jig 10 are pressed against one surface of the laminate by the air pressure in the container, and the liquid crystal display The element 1 and the protective plate can be joined by the double-sided pressure-sensitive adhesive sheet 7.

  Furthermore, the manufacturing apparatus according to the present invention is not limited to a protection plate integrated display panel in which the liquid crystal display element 1 and the protection plate 6 are joined. For example, a light emitting display element such as an organic EL (electroluminescence) display element and a protection plate It can also be used for the production of a protection plate integrated type display panel in which is bonded.

Further, the manufacturing apparatus of the present invention is a protective device in which a display element and a protective plate are filled between them, and a resin that is cured after adjusting the gap between the display element and the protective plate by pressurization is used as an adhesive layer. It can also be used in the manufacture of a panel-integrated display panel, and in that case, bubbles are generated between the display element and the protective plate, between the display element and the adhesive layer, and between the protective plate and the adhesive layer. It is possible to obtain a protective panel integrated display panel with good display quality.

The top view of a protection plate integrated type display panel. The perspective view of the manufacturing apparatus which shows 1st Example of this invention. The disassembled perspective view of the joining jig which comprises the said manufacturing apparatus. The expanded sectional view of a part of the said joining jig. The conceptual diagram which shows exclusion of the residual air between the display element and adhesive layer (double-sided adhesive sheet) in manufacture of the protection board integrated display panel by the manufacturing apparatus of a 1st Example. The manufacturing apparatus which shows 2nd Example of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Display element (liquid crystal display element), 6 ... Observation surface protection board, 7 ... Adhesion layer (double-sided adhesive sheet), 10 ... Joining jig, 11 ... Frame member, 12 ... Through-hole, 13 ... 1st elastic member ( (Hard elastic member), 14 ... second elastic member (soft elastic member), 15 ... pressure roller, 16 ... roller shaft, 17 ... roller body, 18 ... split-type pressure roller, 19 ... roller shaft, 20a, 20b ... split roller body.

Claims (12)

A display element, while a protective plate arranged on the side of, and an adhesive layer is interposed between the forming the stacked body of the display device, the display device by pressing the laminate from one side And a protective plate integrated display panel manufacturing apparatus for joining the protective plate and the protective plate by the adhesive layer,
The joining jig placed on the one surface of the laminate is
A grid-like frame member in which through holes are arranged in a row direction and a column direction in a region corresponding to the adhesive layer;
A first elastic member fitted in the through hole in a predetermined row of the frame member;
A second elastic member that is softer than the first elastic member and is fitted into the through holes in the other rows of the frame members;
Apparatus for producing a protective plate integrated display panel, which comprises a. The through-holes of the frame member are provided with at least three rows or more, the planar shape is formed in a square shape or a rectangular shape, and the planar shape is a square hole having the same length in the thickness direction of the frame member. The manufacturing apparatus of the protection plate integrated display panel according to claim 1. In the through hole of the frame member, the first elastic member is fitted into the through hole in a row of the central portion, and the second elastic member is fitted into the through hole in a row other than the central portion. it has protective plate integral display panel manufacturing apparatus according to claim 1 or 2, characterized in. 4. The protection plate integrated display according to claim 1 , wherein the elastic member is fitted in the through hole so as to be slidable in a thickness direction of the frame member. 5. Panel manufacturing equipment. The elastic member is formed such that a lower end side portion is formed narrower than an upper end side portion thereof, and a step surface is formed between the upper end side portion and the lower end side portion,
The through hole of the frame member is formed in a shape in which an elastic member retaining portion for receiving the stepped surface of the elastic member is formed on the inner periphery on the lower end side.
The manufacturing apparatus of the protection plate integrated display panel according to any one of claims 1 to 4 . It said first elastic member is a molded article made of a hard rubber, the second elastic member 1 to claim characterized in that it is a molded article made of a soft rubber than the first elastic member The manufacturing apparatus of the protection plate integrated display panel in any one of 5 . The joining jig has the lower surface of the frame member opposed to the laminated body, and the lower surface of the frame member and the end surface of the lower end side portion of the elastic member are brought into contact with the one surface of the laminated body. The protection plate according to claim 5, wherein the protection plate is placed on the one surface of the laminated body in a state where the upper end side portion of the elastic member is protruded on the frame member. Integrated display panel manufacturing equipment. 8. The manufacturing apparatus of a protection plate integrated display panel according to claim 1, wherein the joining jig has an outer shape larger than a planar shape of the adhesive layer. Move on the joining jig from one end to the other in the row direction, and sequentially press the first elastic member and the second elastic member in the order of arrangement in the row direction, The apparatus for manufacturing a protection panel integrated display panel according to any one of claims 1 to 8, further comprising a pressure roller that presses against the one surface of the laminated body. The pressure roller includes a roller shaft and a roller body mounted on the roller shaft having a corresponding length across the row of the elastic members of the joining jig, and the roller body is uniform over the entire length. 10. The apparatus for manufacturing a protection panel integrated display panel according to claim 9, wherein the manufacturing apparatus has a high hardness. The plurality of pressure rollers mounted on the roller shaft and the roller shaft divided in correspondence with the array rows of the first elastic members and the array rows of the second elastic members of the joining jig. Divided roller body,
Of the divided roller bodies, the divided roller bodies corresponding to the array rows of the first elastic members and the divided roller bodies corresponding to the array rows of the second elastic members have different hardnesses. The manufacturing apparatus of the protection plate integrated display panel according to claim 9. The joining jig has at least two array rows of the second elastic members that are softer than the first elastic member on both sides of the array rows of the first elastic members, One of the divided roller bodies corresponding to an array row of the second elastic members adjacent to each other among the divided roller bodies of the pressure roller has different hardness. Item 12. A manufacturing apparatus of a protection plate integrated display panel according to Item 11.

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