JP2010139990A - Apparatus for manufacturing protective plate integrated display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a protective plate integrated display panel capable of bonding a display element to an observation surface-protective plate without producing air bubbles between an adhesive layer and the display element and observation surface-protective plate to provide the protective plate integrated display panel having good display quality. <P>SOLUTION: A bonding tool 10 comprises: a grid-like frame member 11 disposed by arranging a plurality of through-holes in the row direction and the column direction; a plurality of first elastic members 13 which are fitted to the plurality of through-holes of a predetermined row of the frame member 11 so as to be slidably in respective axial directions; and a plurality of second elastic members 14 which are softer than the first elastic member 13 and are fitted to the plurality of through-holes of the other rows of the frame member 11 so as to be slidable in respective axial directions. The bonding tool is placed on one side surface of a laminate by laminating the display element 1 and the protective plate 6 while interposing the adhesive layer 7 between them, wherein the bonding tool 10 is pressed by a pressing roller 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

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.

The protective plate integrated display panel manufacturing apparatus according to claim 1 of the present invention is
A display element for displaying an image and an observation surface protection plate arranged on the observation side of the display element are laminated with an adhesive layer interposed therebetween, and the laminate is pressed from one surface side. In the manufacturing apparatus of the protection plate integrated display panel in which the display element and the protection plate are joined by the adhesive layer,
A lattice-shaped frame member provided with a plurality of through holes arranged in a row direction and a column direction at least in a region corresponding to the adhesive layer, and a plurality of through holes in a predetermined row of the frame member, respectively. A plurality of first elastic members that are slidably fitted in the axial direction, and are softer than the first elastic members, and are respectively axially inserted into the plurality of through holes in the other rows of the frame members. It comprises a plurality of second elastic members slidably fitted, and is placed on one surface of a laminate in which the display element and the protective plate are laminated with the adhesive layer interposed therebetween. It is characterized by comprising a joining jig.

  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 plurality of through holes of the frame member are provided in at least three rows, of which the center A first elastic member is fitted in each of the plurality of through holes in the row, and a second elastic member that is softer than the first elastic member is fitted in each of the plurality of through holes in the rows on both sides. It is characterized by.

  According to a third aspect of the present invention, in the protection plate-integrated display panel manufacturing apparatus according to the first or second aspect, 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; To do.

  According to a fourth aspect of the present invention, in the manufacturing apparatus of the protection plate integrated display panel according to the third aspect, the pressure roller extends over an array row of all elastic members of the roller shaft and the joining jig. And a roller body mounted on the roller shaft, the roller body having a uniform hardness over its entire length.

  According to a fifth aspect of the present invention, in the manufacturing apparatus of the protection plate integrated display panel according to the third aspect, the pressure roller includes a roller shaft and an array row of the first elastic members of the joining jig. A plurality of divided roller bodies that are divided in correspondence with the arrangement rows of the second elastic members and are mounted on the roller shaft, and the arrangement rows of the first elastic members among these divided roller bodies And the divided roller body corresponding to the array row of the second elastic members have different hardnesses.

  According to a sixth aspect of the present invention, in the apparatus for manufacturing a protection plate-integrated display panel according to the fifth aspect, the joining jig is provided on each side of the first elastic member with the first elastic member interposed therebetween. There are at least two rows of second elastic members that are softer than one elastic member, and the rows of the second elastic members adjacent to each other among the plurality of divided roller bodies of the pressure roller. One and the other of the divided roller bodies respectively corresponding to the above have a different hardness.

  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 has a roller shaft 16 and a length corresponding to the arrangement row of all the elastic members 13 and 14 of the joining jig 10, and a roller body 17 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 hard elastic members 13 can be arbitrarily set.

  That is, the hardness of the divided roller bodies 20a and 20b of the divided pressure roller 18 corresponds to the row of the hard elastic members 13 rather than the pressing force of the portion corresponding to the arrangement row of the hard elastic members 13 of the laminated body. 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 to increase the difference between the 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 hard elastic members 13 of the laminate, 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 hard elastic members 13 of the laminate 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-described embodiment, the liquid crystal display element 1 protective plate 6 and the double-sided pressure-sensitive adhesive sheet 7 interposed therebetween are stacked, and the observation side of the liquid crystal display element 1 of the two opposite surfaces of the laminate. The joining jig 10 is placed on the surface opposite to the surface, 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. The hard elastic member 13 and the soft elastic member 14 having the same plane area are fitted, respectively, but 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. 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. A row of elastic members may be formed as described above.

  Moreover, the manufacturing apparatus of this invention may be provided with only the said joining jig 10, In that case, the liquid crystal display element 1 protection plate 6 is provided in the state which evacuated the said container, for example in the airtight container. The joining jig 10 is placed on one surface (a surface opposite to the observation side of the liquid crystal display element 1 or a surface facing the observation side of the protective plate 6) of the laminate laminated with the double-sided pressure-sensitive adhesive sheet 7 interposed therebetween. And then returning the inside of the container to atmospheric pressure, thereby pressing the elastic members 13 and 14 of the joining jig 10 against one surface of the laminate by the air pressure in the container, and the liquid crystal display 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 for the production of a panel-integrated display panel. In this case, the display element and the protective plate are caused to generate bubbles 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 (6)

A display element for displaying an image and an observation surface protection plate arranged on the observation side of the display element are laminated with an adhesive layer interposed therebetween, and the laminate is pressed from one surface side. In the manufacturing apparatus of the protection plate integrated display panel in which the display element and the protection plate are joined by the adhesive layer,
A lattice-shaped frame member provided with a plurality of through holes arranged in a row direction and a column direction at least in a region corresponding to the adhesive layer, and a plurality of through holes in a predetermined row of the frame member, respectively. A plurality of first elastic members that are slidably fitted in the axial direction, and are softer than the first elastic members, and are respectively axially inserted into the plurality of through holes in the other rows of the frame members. It comprises a plurality of second elastic members slidably fitted, and is placed on one surface of a laminate in which the display element and the protective plate are laminated with the adhesive layer interposed therebetween. A protective plate-integrated display panel manufacturing apparatus comprising a joining jig.   The plurality of through holes of the frame member are provided in at least three or more rows, and the first elastic members are fitted into the plurality of through holes in the center row, respectively, and the plurality of through holes in both rows are respectively provided. 2. The protection plate integrated display panel manufacturing apparatus according to claim 1, wherein a second elastic member softer than the first elastic member is fitted.   It moves on the joining jig from one end to the other end in the row direction, and sequentially presses the plurality of first elastic members and the second elastic members in the order of arrangement in the row direction, and these elastic members are placed on the laminate. The protective plate-integrated display panel manufacturing apparatus according to claim 1, further comprising a pressure roller that presses against the one surface.   The pressure roller is composed of a roller shaft and a roller body having a corresponding length across all rows of the elastic members of the joining jig, and the roller body is mounted on the roller shaft. 4. The apparatus for manufacturing a protection panel integrated display panel according to claim 3, wherein the apparatus has a uniform hardness over the entire area.   The pressure roller is divided into a roller shaft and a first elastic member array row and a second elastic member array row of the joining jig, respectively, and a plurality of divided roller bodies mounted on the roller shaft. Among these divided roller bodies, the divided roller body corresponding to the array row of the first elastic members and the divided roller body corresponding to the array row of the second elastic members are different from each other. The apparatus for manufacturing a protection plate-integrated display panel according to claim 3, wherein:   The joining jig has at least two array rows of second elastic members that are softer than the first elastic member on both sides of the array rows of first elastic members. The one and the other of the divided roller bodies respectively corresponding to the array rows of the adjacent second elastic members among the plurality of divided roller bodies of the rollers have different hardnesses. 5. An apparatus for manufacturing a protection panel integrated display panel according to 5.

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