JP2010014901A - Apparatus for manufacturing liquid crystal display device and method for manufacturing the same - Google Patents

Abstract

A flat liquid crystal display panel is securely attached to a curved backlight.
An apparatus for manufacturing a curved liquid crystal display device whose display surface is curved in one direction, wherein the curved backlight 40 curved in one direction is elastically deformed and held in a flat shape. Part 60a and a panel holding part 70a for holding the flat liquid crystal display panel 30 in a flat shape, and the backlight holding part 60a and the panel holding part 70a are held by the backlight holding part 60a by overlapping each other. The backlight 40 and the liquid crystal display panel 30 held by the panel holding part 70a are bonded together.
[Selection] Figure 2

Description

  The present invention relates to a manufacturing apparatus and a manufacturing method of a liquid crystal display device, and more particularly to a manufacturing apparatus and a manufacturing method of a curved liquid crystal display device whose display surface is curved in one direction.

  In recent years, a novel design that can display a curved surface by curving the display surface in one direction has attracted attention in liquid crystal display devices.

  For example, Patent Document 1 discloses a lamination process in which two glass substrates are stacked to form a laminated glass substrate, and an adhesion process in which the laminated glass substrate is kept in a reduced pressure state in a vacuum chamber and the two glass substrates are brought into close contact with each other. , A method of forming a glass substrate for a curved liquid crystal cell, which comprises a molding step of placing the adhered laminated glass substrate in a curved mold and heating it to a softening temperature of the glass substrate to form a curved shape. .

  Further, Patent Document 2 discloses a mounting unit having a mounting surface that follows the curved shape of a liquid crystal display panel, a circuit board that is a drive signal supply unit that drives and displays the liquid crystal display panel, and a mounting unit. A plurality of electrode terminals of the liquid crystal display panel and a rubber connector that forms a connector part for connecting the circuit board, and the rubber connector follows the curved surface on which the plurality of electrode terminals of the liquid crystal display panel are formed. An inspection apparatus for a liquid crystal display panel having a conductive portion forming a plurality of terminals in contact with the electrode terminals is disclosed.

Patent Document 3 discloses an electro-optical device in which a light output surface of a backlight light guide plate is configured as a curved surface, and the electro-optical device substrate is arranged along the light output surface in a curved state. It is disclosed.
Japanese Patent Laid-Open No. 3-122036 JP-A-10-260424 JP 2005-134461 A

  FIG. 16 is a cross-sectional view when a flat liquid crystal display panel 130 is attached to a curved backlight 140 in a conventional method of manufacturing a curved liquid crystal display device, and FIG. 17 shows the backlight at that time. It is sectional drawing which shows the damage of 140. FIG.

  When manufacturing a curved liquid crystal display device, for example, as shown in FIG. 16, a flat liquid crystal display panel 130 is attracted to the lower surface of the bonding head 170 and a curved surface is formed on the upper surface of the bonding stage 160. After the backlight 140 is placed, the adhesive head 170 is lowered to bring the lower surface of the liquid crystal display panel 130 into contact with the upper surface of the backlight 140, and a double-sided adhesive tape provided in advance on the periphery of the liquid crystal display panel 130. The liquid crystal display panel 130 is affixed to the backlight 140 via an adhesive layer (not shown). Here, since the liquid crystal display panel 130 is affixed to the curved backlight 140, even if the liquid crystal display panel 130 is removed from between the affixing stage 160 and the affixing head 170, the shape is maintained in a curved shape. Thus, a curved liquid crystal display device is formed.

  However, as described above, when the lower surface of the flat liquid crystal display panel 130 is brought into contact with the upper surface of the curved backlight 140 from both ends by lowering the pasting head 170, the upper surface of the backlight 140 is obtained. In some cases, the liquid crystal display panel 130 may not be attached to a predetermined position due to friction between the liquid crystal display panel 130 and both ends of the lower surface of the liquid crystal display panel 130. Since most of the backlight 140 is made of resin, when it comes into contact with the corners of the glass substrate constituting the liquid crystal display panel 130, the upper surface of the backlight 140 is scraped and damaged as shown in FIG. Or the backlight 140 is scraped off, and foreign matter P may be generated to cause various defects.

  The present invention has been made in view of this point, and an object of the present invention is to reliably attach a flat liquid crystal display panel to a curved backlight.

  In order to achieve the above object, according to the present invention, a curved backlight that is elastically deformed into a flat shape and a flat liquid crystal display panel are bonded together.

  Specifically, an apparatus for manufacturing a liquid crystal display device according to the present invention is an apparatus for manufacturing a curved liquid crystal display device whose display surface is curved in one direction, and elastically deforms a curved backlight having a curved surface in one direction. A backlight holding portion that holds the flat liquid crystal display panel in a flat shape, and the backlight holding portion and the panel holding portion overlap each other, thereby The backlight held by the backlight holding unit and the liquid crystal display panel held by the panel holding unit are bonded together.

  According to the above configuration, the backlight holding unit that elastically deforms the curved backlight and holds the flat liquid crystal display panel, and the panel holding unit that holds the flat liquid crystal display panel in a flat shape are provided to each other. Since the backlight and the liquid crystal display panel are bonded together, the curved backlight is not bonded to the curved backlight and the flat liquid crystal display panel as in the past. Is temporarily elastically deformed into a flat shape, and the flat liquid crystal display panel is bonded in that state. Thereby, since the friction of the surface which acts between a backlight and a liquid crystal display panel is suppressed, it becomes possible to affix a flat liquid crystal display panel to a curved-shaped backlight reliably.

  The backlight holding unit includes a mounting stage for mounting the backlight, and a pair of pressing bodies for pressing a pair of uncurved edges of the backlight to the mounting stage. It may be.

  According to said structure, on the mounting stage which comprises a backlight holding | maintenance part, a curved backlight is each pressed by a pair of uncurved edge of a curved backlight with a pair of pressing body. Can be elastically deformed in a planar shape, so that the backlight holding portion is specifically configured.

  The pair of pressing bodies may be configured to be slidable outward when the backlight is pressed against the placement stage.

  According to the above configuration, when the pair of uncurved edges of the curved backlight is pressed by the pair of pressing bodies on the mounting stage, the positions of the pair of edges on the backlight are more outward. Although it moves, the pair of pressing bodies also slides outward at that time, so that the backlight can be reliably elastically deformed into a flat shape.

  The panel holding unit may be configured such that the liquid crystal display panel held by the panel holding unit and the backlight held by the backlight holding unit can be aligned.

  According to the above configuration, the curved backlight and the flat liquid crystal display panel are bonded to the flat liquid crystal display panel and the backlight that is elastically deformed flat by the backlight holding part and the panel holding part. Compared with the conventional pasting, the backlight and the liquid crystal display panel are easier to align, and the panel holder is configured to align the liquid crystal display panel and the backlight. The liquid crystal display panel can be securely attached to a predetermined position on the inner peripheral surface of the light.

  You may provide the position detection part for each detecting the position of the liquid crystal display panel hold | maintained at the said panel holding | maintenance part, and the position of the backlight hold | maintained at the said backlight holding | maintenance part.

  According to the above configuration, since the position detection unit is provided, for example, the position of the backlight and the liquid crystal display panel is detected by detecting the alignment marks provided on the liquid crystal display panel and the backlight respectively. Matching is specifically possible.

  The panel holding unit may be configured to adsorb the liquid crystal display panel to the surface.

  According to the above configuration, the liquid crystal display panel is vacuum-sucked on the surface of the panel holding unit, for example, so that the liquid crystal display panel is specifically held flat on the panel holding unit.

  The method for manufacturing a liquid crystal display device according to the present invention is a method for manufacturing a curved liquid crystal display device whose display surface is curved in one direction, and a curved backlight that is curved in one direction is planarized. The deformation imparting step of elastically deforming, the backlight elastically deformed into the flat shape, and the bonding step of bonding the flat liquid crystal display panel, and the elastic deformation of the backlight bonded with the liquid crystal display panel are released. A deformation release step.

  According to the above method, a deformation imparting step of elastically deforming the curved backlight into a flat shape, a bonding step of bonding the elastically deformed backlight and the flat liquid crystal display panel, and the liquid crystal display And a deformation releasing step for releasing the elastic deformation of the backlight bonded with the panel, so that the curved backlight and the flat liquid crystal display panel are not bonded together as in the past, but the deformation applying step. In the subsequent bonding step, the curved backlight is temporarily elastically deformed into a flat shape, and the flat liquid crystal display panel is bonded in that state. Thereafter, in the deformation releasing step, the elastic deformation of the backlight is released, whereby the liquid crystal display panel is held in a curved shape along the shape of the backlight, and the curved liquid crystal display device is manufactured. Thereby, in the bonding process, the friction of the surface acting between the backlight and the liquid crystal display panel is suppressed, so that the flat liquid crystal display panel can be securely bonded to the curved backlight. .

  The backlight includes a resin light guide plate curved in one direction, a lamp provided along an uncurved edge of the light guide plate, and a resin reflection sheet provided on the outer peripheral surface of the light guide plate. And a resinous optical sheet provided on the inner peripheral surface of the light guide plate, and the liquid crystal display panel may include a pair of glass substrates disposed to face each other.

  According to the above method, since the backlight (other than the lamp) is made of resin and the liquid crystal display panel is made of glass, the backlight may be scraped off at the corner of the liquid crystal display panel. Since the friction of the surface acting between the backlight and the liquid crystal display panel is suppressed, the backlight is scraped and the generation of foreign matters due to the scraping is suppressed.

  According to the present invention, the curved backlight that is elastically deformed into a flat shape and the flat liquid crystal display panel are bonded together, so that the flat liquid crystal display panel can be securely attached to the curved backlight. it can.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments.

Embodiment 1 of the Invention
1 to 5 show Embodiment 1 of a manufacturing apparatus and a manufacturing method of a liquid crystal display device according to the present invention.

  FIG. 1 is a cross-sectional view of the liquid crystal display device 50 of the present embodiment.

  As shown in FIG. 1, the liquid crystal display device 50 is pasted via a curved liquid crystal display panel 30 whose display surface D is curved in one direction, and an adhesive layer 35 provided on the periphery of the liquid crystal display panel 30. And a curved backlight 40 curved in one direction.

  As shown in FIG. 1, the liquid crystal display panel 30 is provided between, for example, a TFT substrate 10 and a CF substrate 20 provided as a pair of glass substrates arranged to face each other, and the TFT substrate 10 and the CF substrate 20. The liquid crystal layer 25 is provided, and the TFT substrate 10 and the CF substrate 20 are bonded to each other and a sealing material 26 provided in a frame shape to enclose the liquid crystal layer 25 is provided. Note that polarizing plates (not shown) are respectively attached to the front and back surfaces of the liquid crystal display panel 30.

  The TFT substrate 10 includes, for example, a plurality of gate lines (not shown) provided so as to extend in parallel with each other on a glass substrate, a gate insulating film (not shown) provided so as to cover each gate line, and a gate A plurality of source lines (not shown) provided on the insulating film so as to extend in parallel to each other in a direction orthogonal to each gate line, and a plurality of TFTs provided for each gate line and each intersection of the source lines. (Not shown), an interlayer insulating film (not shown) provided so as to cover each TFT and each source line, and a plurality of pixel electrodes (not shown) provided in a matrix on the interlayer insulating film and connected to each TFT ( (Not shown) and an alignment film (not shown) provided so as to cover each pixel electrode.

  The CF substrate 20 includes, for example, a black matrix (not shown) provided in a frame shape on the glass substrate and in a lattice shape in the frame, and a red layer, a green layer, and a black layer provided between the lattices of the black matrix, respectively. A colored layer (not shown) such as a blue layer, a common electrode (not shown) provided so as to cover the black matrix and each colored layer, and an alignment film (not shown) provided so as to cover the common electrode I have.

  The liquid crystal layer 25 is made of a nematic liquid crystal material having electro-optical characteristics.

  The adhesive layer 35 is made of a double-sided adhesive tape or the like.

  As shown in FIG. 1, the backlight 40 includes a light guide plate 43 made of a transparent resin such as an acrylic resin curved in one direction, and an LED (Light Emitting) provided along an uncurved edge of the light guide plate 43. A lamp 46 such as a diode, a resin reflective sheet 42 such as a white PET (Polyethylene Terephthalate) film provided on the outer peripheral surface of the light guide plate 43, and an optical sheet provided on the inner peripheral surface of the light guide plate 43. A resin-made diffusion sheet 44 and prism sheet 45 such as an acrylic resin, an FPC (Flexible Printed Circuit) 47 connected to the lamp 46, a reflection sheet 42, a light guide plate 43, a diffusion sheet 44, a prism sheet 45, a lamp 46, and And a resin frame 41 such as an acrylic resin provided in a concave shape so as to accommodate the FPC 47 therein.

  In the liquid crystal display device 50 configured as described above, one pixel is formed for each pixel electrode of the TFT substrate 10 and each colored layer of the CF substrate 20, and a voltage of a predetermined magnitude is applied to the liquid crystal layer 25 in each pixel. As a result, the alignment state of the liquid crystal layer 25 is changed and the transmittance of light incident on the liquid crystal display panel 30 from the backlight 40 is adjusted to display an image.

  Next, a liquid crystal display device manufacturing apparatus 90a for manufacturing the liquid crystal display device 50 of the present embodiment will be described with reference to FIG. Here, FIG. 2 is a side view of the liquid crystal display device manufacturing apparatus 90a of the present embodiment. In FIG. 2, the liquid crystal display panel 30 is simplified in a strip shape and the backlight 40 is simplified in a curved strip shape.

  As shown in FIG. 2, the liquid crystal display device manufacturing apparatus 90 a includes a backlight holding unit 60 a that holds the backlight 40 on the upper surface and a panel holding unit 70 a that holds the liquid crystal display panel 30 on the lower surface.

  The backlight holding unit 60a includes a mounting stage 61a for mounting the backlight 40, and a pair of pressing bodies 62a for pressing a pair of uncurved edges of the backlight 40 against the mounting stage 61a. It has. Here, as shown in FIG. 2, the mounting stage 61a has a pair of side walls provided so as to stand upright at both ends thereof, and a pressing body 62a is provided inside each side wall so as to be movable up and down. .

  As shown in FIG. 2, the panel holding unit 70a is provided so as to be movable up and down with respect to the mounting stage 61a, and the liquid crystal display panel 30 is vacuum-sucked through a plurality of suction ports (not shown) formed on the lower surface thereof. Is configured to do.

  Next, a method for manufacturing the liquid crystal display device 50 by the liquid crystal display device manufacturing apparatus 90a of the present embodiment will be described with reference to FIGS. Here, FIG. 3, FIG. 4 and FIG. 5 are side views of the liquid crystal display device manufacturing apparatus 90a in the deformation applying step, the bonding step, and the deformation releasing step. In addition, the manufacturing method of the liquid crystal display device 50 of this embodiment includes a preparation process, a deformation applying process, a bonding process, and a deformation releasing process.

<Preparation process>
The liquid crystal display panel 30 and the backlight 40 having the above configuration are prepared. Note that an adhesive layer 35 (see FIG. 1) is formed on the periphery of the liquid crystal display panel 30 by attaching a double-sided adhesive tape or the like. Further, FPC may be attached to the terminal region of the TFT substrate 20 exposed from the CF substrate 20.

<Deformation imparting process>
First, as shown in FIG. 2, the curved backlight 40 prepared in the preparation step is placed on the top surface of the placement stage 61a, and the planar shape prepared in the preparation step is placed on the bottom surface of the panel holding portion 70a. The liquid crystal display panel 30 is held by vacuum suction.

  Subsequently, as shown in FIG. 3, the pair of pressing bodies 62 a is lowered to press the pair of uncurved edges of the backlight 40 onto the mounting stage 61 a on the lower surface of the pair of pressing bodies 62 a. The backlight 40 is elastically deformed into a flat shape.

<Lamination process>
As shown in FIG. 4, by lowering the panel holding portion 70a, the liquid crystal display panel 30 held by the panel holding portion 70a is bonded to the backlight 40 that has been elastically deformed into a flat shape in the deformation applying step. Here, as described above, a double-sided adhesive tape or the like is attached to the periphery of the lower surface of the liquid crystal display panel 30 held by the panel holding unit 70a, and the release paper on both sides thereof is peeled off.

<Deformation release process>
As shown in FIG. 5, by raising the pair of pressing bodies 62a and the panel holding portion 70a, the elastic deformation of the backlight 40 to which the liquid crystal display panel 30 is bonded in the bonding process is released, and the backlight 40 The liquid crystal display panel 30 bonded together is deformed into a curved surface.

  As described above, the liquid crystal display device 50 can be manufactured using the liquid crystal display device manufacturing apparatus 90a of the present embodiment. In the manufactured liquid crystal display device 50, the liquid crystal display panel 30 has, for example, a length of 30 mm to 105 mm, a width of 25 mm to 65 mm, and a thickness of 0.4 mm to 1.5 mm. The backlight 40 has a length of 35 mm to 110 mm, a width of 30 mm to 70 mm, and a thickness of 1 mm to 4 mm, for example. And the backlight 40 is curving along the length direction, for example so that a center part may become about 5 mm lower than both ends.

  As described above, according to the liquid crystal display device manufacturing apparatus 90a of this embodiment and the method of manufacturing the liquid crystal display device 50 using the same, the curved backlight 40 is elastically deformed into a planar shape by the backlight holding portion 60a. A deformation applying step, a bonding step of bonding the elastically deformed backlight 40 and the flat liquid crystal display panel 30 by overlapping the backlight holding unit 60a and the panel holding unit 70a, and the liquid crystal display panel 30 And a deformation canceling step for canceling elastic deformation of the backlight 40 bonded together, so that the curved backlight 140 and the flat liquid crystal display panel 130 are bonded together as in the prior art (see FIG. 16). Instead, the curved backlight 40 is temporarily used in the deformation applying step and the subsequent bonding step. Is elastically deformed into a planar shape, so that bonding the liquid crystal display panel 30 flat in its state. Thereafter, in the deformation release step, the liquid crystal display panel 30 is held in a curved shape along the shape of the backlight 40 by releasing the elastic deformation of the backlight 40, and the curved liquid crystal display device 50 is manufactured. Can do. Thereby, in the bonding step, the friction of the surface acting between the backlight 40 and the liquid crystal display panel 30 is suppressed, so that the flat liquid crystal display panel 30 is securely attached to the curved backlight 40. Can do.

  Further, according to the method for manufacturing the liquid crystal display device 50 of the present embodiment, the backlight 40 (other than the lamp 46) is made of resin, and the liquid crystal display panel 30 is made of glass. Although there is a possibility that the light 40 may be scraped, as described above, since the friction of the surface acting between the backlight 40 and the liquid crystal display panel 30 can be suppressed in the bonding step, the scraping of the backlight 40, and Generation of foreign matter due to the shaving can be suppressed.

<< Embodiment 2 of the Invention >>
6 to 15 show Embodiment 2 of a manufacturing apparatus and a manufacturing method for a liquid crystal display device according to the present invention. Specifically, FIG. 6 is a top view of the liquid crystal display device manufacturing apparatus 90b of the present embodiment, and FIG. 7 is a side view thereof. FIG. 8 is a top view of the liquid crystal display device manufacturing apparatus 90b in the deformation applying step. 9, 12 and 13 are side views of the liquid crystal display device manufacturing apparatus 90b in the deformation applying step, the bonding step, and the deformation releasing step. Further, FIG. 10 is an enlarged view of the screen before alignment of the monitors 85a and 85b constituting the liquid crystal display device manufacturing apparatus 90b, and FIG. 11 is an enlarged view of the screen after the alignment. FIG. 14 is a side view of the modified example of the pressing body 62b constituting the liquid crystal display device manufacturing apparatus 90b before the pressing body 62b is lowered, and FIG. 15 is a view after the pressing body 62b is lowered. FIG. In the following embodiments, the same portions as those in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the first embodiment, the method of manufacturing the liquid crystal display device 50 using the liquid crystal display device manufacturing apparatus 90a is exemplified. However, in the present embodiment, the method of manufacturing the liquid crystal display device 50 using the liquid crystal display device manufacturing apparatus 90b. Will be described.

  As shown in FIGS. 6 to 9, the liquid crystal display device manufacturing apparatus 90 b has a backlight holding unit 60 b provided on the main body stage S for holding the backlight 40 and a liquid crystal display panel 30. A panel holding unit 70b provided on the main body stage S and cameras 80a and 80b provided as position detection units on the backlight holding unit 60b are provided. Here, the cameras 80a and 80b are provided so as to be appropriately movable so as not to hinder the operation of the panel mounting portion 71 described later.

  As shown in FIGS. 6 and 7, the backlight holding unit 60 b is provided on the both sides of the mounting stage 61 b and the mounting stage 61 b provided on the main body stage S for mounting the backlight 40. And a pair of pressing bodies 62b for pressing a pair of uncurved edges of the backlight 40 against the mounting stage 61b. A positioning pin 63 is provided on the surface of the mounting stage 61b so as to contact the end surface of the backlight 40 and suppress the movement of the backlight 40.

  The pair of pressing bodies 62b can be moved up and down by each cylinder 62c provided on the main body stage S. Here, as shown in FIGS. 14 and 15, the cylinder 62c may be provided so as to be slidable on the slide rail 62d. According to this, when lowering the pair of pressing bodies 62b, the cylinder 62c, that is, the pair of pressing bodies 62b attached to the cylinder 62c slides appropriately outside, so that the backlight 40 is surely elastically flattened. Can be deformed.

  6-9, the panel holding | maintenance part 70b is rotatably provided in the upper part of the raising / lowering part 76 provided on the main body stage S via the cylinder 76c so that raising / lowering is possible, A panel placement portion 71 for placing the liquid crystal display panel 30 and a position adjustment portion 75 that is provided on the main body stage S and adjusts the position of the liquid crystal display panel 30 placed on the panel placement portion 71. I have.

  As shown in FIG. 8, the panel placement portion 71 is open so that the panel temporary placement portion 73 is accommodated. Here, a resin layer 72 for protecting the liquid crystal display panel 30 to be held is formed on the surfaces of the panel placement portion 71 and the panel temporary placement portion 73 and the liquid crystal display panel 30 is vacuum-adsorbed. A plurality of suction ports (not shown) are formed. A positioning pin 74 is provided on the surface of the panel mounting portion 71 so as to be in contact with the end surface of the liquid crystal display panel 30 and suppress the movement of the liquid crystal display panel 30.

  As shown in FIGS. 8 and 9, the position adjustment unit 75 includes an x-axis adjustment knob 75 x for minutely moving the panel placement unit 71 rotated and moved to the backlight holding unit 60 b side in the x-axis direction, A y-axis adjustment knob 75y for minutely moving the panel placement portion 71 in the y-axis direction and an angle adjustment knob 75θ for minutely moving the panel placement portion 71 in the θ direction around the z-axis. Yes. Note that the x-axis adjustment knob 75x, the y-axis adjustment knob 75y, and the angle adjustment knob 75θ are configured like a thimble of a micrometer so that the panel placement unit 71 can be slightly moved in each direction by appropriately rotating. It has become.

  As shown in FIGS. 10 and 11, the cameras 80a and 80b include an alignment mark Ma provided in advance on the liquid crystal display panel 30 when the panel mounting portion 71 is overlaid on the backlight holding portion 60b, and a backlight. Monitors 85a and 85b for confirming the position (image) of an alignment mark Mb provided in advance on the light 40 are connected to each other.

  Next, a method for manufacturing the liquid crystal display device 50 using the liquid crystal display device manufacturing apparatus 90b of the present embodiment will be described with reference to FIGS. In addition, the manufacturing method of the liquid crystal display device 50 of this embodiment includes a preparation process, a deformation applying process, a bonding process, and a deformation releasing process.

<Preparation process>
The liquid crystal display panel 30 and the backlight 40 having the above configuration are prepared. The prepared liquid crystal display panel 30 and backlight 40 are provided with alignment marks Ma and Mb, respectively. Further, a double-sided adhesive tape or the like is attached to the periphery of the liquid crystal display panel 30 as in the first embodiment.

<Deformation imparting process>
First, as shown in FIGS. 6 and 7, the curved backlight 40 prepared in the preparation step is placed on the top surface of the placement stage 61 b, and prepared in the preparation step on the top surface of the panel placement portion 71. The flat liquid crystal display panel 30 is held by vacuum suction.

  Subsequently, as shown in FIGS. 8 and 9, the pair of pressing bodies 62b are lowered, so that the pair of uncurved edges of the backlight 40 on the lower surface of the pair of pressing bodies 62b is placed on the mounting stage 61b. The backlight 40 is elastically deformed into a flat shape by pressing.

<Lamination process>
First, as shown in FIGS. 8 and 9, after the panel mounting portion 71 holding the liquid crystal display panel 30 in the deformation applying step is reversed to the backlight holding portion 60b side, the cameras 80a and 80b are used to make the panel. The positions of the alignment mark Ma provided on the liquid crystal display panel 30 held by the mounting portion 71 and the alignment mark Mb of the backlight 40 that is elastically deformed in a planar shape in the deformation applying step are confirmed. Here, in the monitors 85a and 85b, as shown in FIG. 10, when the center position of the alignment mark Ma and the center position of the alignment mark Mb are shifted, the x-axis adjustment knob 75x, the y-axis adjustment knob 75y, By appropriately rotating the angle adjustment knob 75θ, as shown in FIG. 11, the liquid crystal display panel 30 and the backlight 40 are aligned so that the center position of the alignment mark Ma and the center position of the alignment mark Mb coincide. I do.

  Subsequently, as shown in FIG. 12, the liquid crystal display panel 30 and the backlight 40 that are aligned with each other are bonded together by lowering the panel mounting portion 71. Here, as described above, a double-sided adhesive tape or the like is attached to the periphery of the lower surface of the liquid crystal display panel 30 held by the panel mounting portion 71, and the release paper on both sides thereof is peeled off.

<Deformation release process>
As shown in FIG. 13, the cylinders 62c and 76c raise the pair of pressing bodies 62b and the panel mounting portion 71, respectively, thereby elastically deforming the backlight 40 in which the liquid crystal display panel 30 is bonded in the bonding process. And the liquid crystal display panel 30 bonded to the backlight 40 is deformed into a curved surface.

  As described above, the liquid crystal display device 50 can be manufactured by using the liquid crystal display device manufacturing apparatus 90b of the present embodiment.

  As described above, according to the liquid crystal display device manufacturing apparatus 90b of this embodiment and the method of manufacturing the liquid crystal display device 50 using the same, in the bonding step, the backlight 40 and the liquid crystal are used as in the first embodiment. Since the surface friction acting between the display panel 30 and the display panel 30 is suppressed, the flat liquid crystal display panel 30 can be reliably attached to the curved backlight 40.

  In addition, according to the liquid crystal display device manufacturing apparatus 90b and the manufacturing method of the liquid crystal display device 50 using the same according to the present embodiment, the backlight 40 elastically deformed into a flat shape by the backlight holding portion 60b and the panel holding portion 70b, and In the bonding with the flat liquid crystal display panel 30, the backlight 40 and the liquid crystal display panel 30 are compared with the conventional bonding between the curved backlight 140 and the flat liquid crystal display panel 130 (see FIG. 16). The position of the liquid crystal display panel 30 held by the panel holding unit 70b and the position adjusting unit 75 for the panel holding unit 70b to align the liquid crystal display panel 30 and the backlight 40. And a camera 80a for detecting the position of the backlight 40 held by the backlight holding unit 60b, and 0b and monitors 85a and 85b for confirming images taken by the cameras 80a and 80b, respectively, so that the liquid crystal display panel 30 can be securely placed at a predetermined position on the inner peripheral surface of the curved backlight 40. Can be pasted.

  In each of the above embodiments, a method of manufacturing a curved liquid crystal display device by bonding the liquid crystal display panel 30 using a glass substrate to the curved backlight 40 and a manufacturing apparatus used therefor are exemplified. The present invention can also be applied to the manufacture of a liquid crystal display device including a liquid crystal display panel using a plastic substrate.

  As described above, according to the present invention, a flat liquid crystal display panel can be securely attached to an elastically deformable curved backlight, so that a flat element is attached to an elastically deformable curved element. This is useful for pasting technology.

3 is a cross-sectional view of the liquid crystal display device 50 according to Embodiment 1. FIG. It is a side view of the liquid crystal display device manufacturing apparatus 90a. It is a side view of the liquid crystal display manufacturing apparatus 90a in a deformation | transformation provision process. It is a side view of the liquid crystal display manufacturing apparatus 90a in a bonding process. It is a side view of the liquid crystal display device manufacturing apparatus 90a in a deformation | transformation cancellation | release process. It is a top view of the liquid crystal display manufacturing apparatus 90b which concerns on Embodiment 2. It is a side view of the liquid crystal display device manufacturing apparatus 90b. It is a top view of the liquid crystal display device manufacturing apparatus 90b in a deformation | transformation provision process. It is a side view of the liquid crystal display manufacturing apparatus 90b in a deformation | transformation provision process. It is an enlarged view of the screen (before alignment) of the monitors 85a and 85b which comprise the liquid crystal display device manufacturing apparatus 90b. It is an enlarged view of the screen (after alignment) of the monitors 85a and 85b which comprise the liquid crystal display device manufacturing apparatus 90b. It is a side view of the liquid crystal display manufacturing apparatus 90b in a bonding process. It is a side view of the liquid crystal display manufacturing apparatus 90b in a deformation | transformation cancellation | release process. It is a side view before lowering the pressing body 62b (modification) which comprises the liquid crystal display device manufacturing apparatus 90b. It is a side view after lowering the pressing body 62b (modification). FIG. 10 is a cross-sectional view of a conventional curved liquid crystal display device manufacturing method when a flat liquid crystal display panel is attached to a curved backlight 140; FIG. 11 is a cross-sectional view showing damage to a backlight 140 when a flat liquid crystal display panel 130 is attached to a curved backlight 140 in a conventional curved liquid crystal display device manufacturing method.

Explanation of symbols

D Display surface 10 TFT substrate (glass substrate)
20 CF substrate (glass substrate)
30 Liquid crystal display panel 40 Backlight 42 Reflective sheet 43 Light guide plate 44 Diffusion sheet (optical sheet)
45 Prism sheet (optical sheet)
46 LED (lamp)
50 Liquid crystal display devices 60a and 60b Backlight holding units 61a and 61b Placement stages 62a and 62b Pushing bodies 70a and 70b Panel holding units 80a and 80b Cameras (position detection units)
90a, 90b Liquid crystal display device manufacturing apparatus

Claims (8)

An apparatus for manufacturing a curved liquid crystal display device whose display surface is curved in one direction,
A backlight holding portion that elastically deforms a curved backlight that is curved in one direction and holds it in a flat shape;
A panel holding unit for holding a flat liquid crystal display panel in a flat shape,
The backlight holding unit and the panel holding unit are configured to bond the backlight held by the backlight holding unit and the liquid crystal display panel held by the panel holding unit by overlapping each other. An apparatus for manufacturing a liquid crystal display device. The apparatus for manufacturing a liquid crystal display device according to claim 1,
The backlight holding unit includes a mounting stage for mounting the backlight, and a pair of pressing bodies for pressing a pair of uncurved edges of the backlight to the mounting stage. An apparatus for manufacturing a liquid crystal display device. In the manufacturing apparatus of the liquid crystal display device according to claim 2,
The apparatus for manufacturing a liquid crystal display device, wherein the pair of pressing bodies are configured to be slidable outward when the backlight is pressed against the mounting stage. The apparatus for manufacturing a liquid crystal display device according to claim 1,
Manufacturing the liquid crystal display device, wherein the panel holding unit is configured to be able to align the liquid crystal display panel held by the panel holding unit and the backlight held by the backlight holding unit. apparatus. In the manufacturing apparatus of the liquid crystal display device described in Claim 4,
What is claimed is: 1. A liquid crystal display device comprising: a position detection unit for detecting a position of a liquid crystal display panel held by the panel holding unit and a position of a backlight held by the backlight holding unit. Manufacturing equipment. The apparatus for manufacturing a liquid crystal display device according to claim 1,
The apparatus for manufacturing a liquid crystal display device, wherein the panel holding unit is configured to adsorb the liquid crystal display panel to a surface. A method of manufacturing a curved liquid crystal display device whose display surface is curved in one direction,
A deformation applying step of elastically deforming a curved backlight curved in one direction into a plane;
A bonding step of bonding the backlight elastically deformed into the above-described planar shape and the planar liquid crystal display panel;
And a deformation releasing step of releasing elastic deformation of the backlight to which the liquid crystal display panel is bonded. In the manufacturing method of the liquid crystal display device described in Claim 1,
The backlight includes a resin light guide plate curved in one direction, a lamp provided along an uncurved edge of the light guide plate, and a resin reflection sheet provided on the outer peripheral surface of the light guide plate. And an optical sheet made of resin provided on the inner peripheral surface of the light guide plate,
The liquid crystal display panel includes a pair of glass substrates arranged to face each other, and a method for manufacturing a liquid crystal display device.

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