JP2006038909A - Liquid crystal display device and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a liquid crystal display device, which is excellent in solving a malfunction on the manufacturing process due to thinness of a microlens array, and to provide the liquid crystal display device. <P>SOLUTION: The method for manufacturing the liquid crystal display device comprising the microlens array 200 stuck to a liquid crystal display panel 100 has: a step to fix a supporting substrate 300 with stiffness higher than that of the microlens array 200 to a surface of the microlens array 200 opposite to the surface to be stuck to the liquid crystal display device; a step to adjust a position of bonding of the microlens array 200 to the liquid crystal display panel 100 by moving the supporting substrate 300; a step to stick the microlens array 200 and the liquid crystal display panel 100 together; and a step to release the supporting substrate 300 from the microlens array 200. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a liquid crystal display device and a manufacturing method thereof.

  As a problem of a liquid crystal display device, there is an increase in luminance and an increase in viewing angle. In order to solve this problem, an invention of a liquid crystal display device using a microlens array has been proposed.

  A schematic diagram of an example of a liquid crystal display device using a microlens array is shown in FIG. In the liquid crystal display device, a liquid crystal layer 7 is sandwiched between two transparent substrates 2 and 12. A polarizing film 1 is provided on the front side of the transparent substrate 2. On the back side of the transparent substrate 2, a black matrix 3, a color filter layer 4, a transparent electrode 5, and an alignment film 6 are formed. A spacer 8 is provided between the transparent substrate 2 and the transparent substrate 12. On the front side of the transparent substrate 12, a TFT element 11, a transparent electrode 10, and an alignment film 9 are formed.

  The microlens array 122 and the rim 121 are formed on the back side of the transparent substrate 12. The light from the light source incident through the polarizing film 13 is condensed by the microlens array 122 and irradiated to the transparent substrate 2 avoiding the TFT elements 11 and the black matrix 3, thereby increasing the light use efficiency and high brightness. We are trying to make it.

  In addition to the example introduced here, there is a technique for increasing the viewing angle by arranging the microlens array on the transparent substrate 2 side (observer side). Such a technique is described in Patent Document 1, for example.

JP 2001-148625 A

  Since liquid crystal display devices are desired to be reduced in size and thickness, inevitably, the components of each part constituting the liquid crystal display device must also be reduced in size and thickness. In order to reduce the cost, it is also necessary to take a large number simultaneously with a large substrate. The thickness required for the microlens array is about 300 μm, and the substrate for taking a large number simultaneously is, for example, 360 mm × 460 mm. The problem here is related to the manufacturing process.

  As a matter of course, the microlens array is required to be made of a material having transparency. Examples of the material having transparency include glass and plastic. When a plate-like part having a thickness of about 300 μm and an area of 360 mm × 460 mm is formed of glass, it is easily broken, and thus handling is very difficult.

  When it is made of plastic, it is a film rather than a plate. Although it does not crack, it is troublesome to handle because of its low rigidity. For example, a microlens array exhibits its optical performance by aligning with a pixel of a liquid crystal display panel. However, in the case of a film-like low-rigidity, alignment is difficult and the positions of the microlens array and the pixels of the liquid crystal display panel may be displaced. Moreover, since it will extend if force is applied, the position of each lens of a microlens array and the pixel of a liquid crystal display panel will shift | deviate similarly. In such a case, the efficiency improvement function of the optical characteristics is not sufficiently performed.

  As a simple method for solving such a problem, a method of performing a manufacturing process with a thick substrate of the microlens array can be considered. If it is glass, it will be hard to break, and if it is a film, rigidity can be improved. However, the microlens array is thinned by polishing or etching before the microlens array is assembled to the liquid crystal display device panel. In this case, the number of processes increases and cost increase is inevitable. Also, since polishing and etching take time, it is not preferable from the viewpoint of productivity.

  Further, the process of thinning the microlens array by polishing or etching must be performed before the microlens array is assembled to the liquid crystal display panel. Therefore, when the microlens array is assembled to the liquid crystal display panel, a thin microlens array is also formed. Must be handled.

  The present invention has been made to solve such a problem, and provides a preferable method for manufacturing a liquid crystal display device and a liquid crystal display device, which solve the problems in the manufacturing process due to the thinness of the microlens array. With the goal.

  The method of manufacturing a liquid crystal display device according to the present invention is a method of manufacturing a liquid crystal display device in which a microlens array is bonded to a liquid crystal display panel, and is opposite to the surface of the microlens array that is bonded to the liquid crystal display device. Fixing a support substrate having a rigidity higher than that of the microlens array on the surface, adjusting a bonding position of the microlens array and the liquid crystal display panel by moving the support substrate, The method includes a step of bonding the microlens array and the liquid crystal display panel, and a step of peeling the support substrate from the microlens array. As a result, the microlens array can be manufactured by being fixed to the fixing substrate.

  Here, it is preferable that the support substrate is bonded in a region other than the microlens of the microlens array. Thereby, it is possible to prevent the adhesive from remaining on the microlens surface and to realize a suitable bonding procedure by bending the non-bonded portion by its own weight.

  Preferably, the bonding portion is an outer peripheral portion of a microlens array corresponding to one or a plurality of liquid crystal display panels. Thereby, the deflection | deviation by dead weight can be generated centering | focusing on a center part.

  Further, it is preferable that the microlens array and the support substrate are bonded by an adhesive layer that is peeled off by UV light irradiation. Thereby, it is not necessary to apply stress when peeling off the support substrate, and there is no possibility of impairing the engineering performance of the microlens array.

  Alternatively, the microlens array and the support substrate may be bonded by an adhesive layer whose adhesive strength is reduced by heating. Thereby, the effect of peeling without applying stress can also be obtained by heating.

  The microlens array and the liquid crystal display panel are preferably bonded with a UV curable resin. Thereby, an adhesive force can be generated after the alignment between the microlens array and the liquid crystal display panel 100 is completed.

  Alternatively, the microlens array and the liquid crystal display panel may be bonded with a thermosetting resin. Thereby, the effect of generating an adhesive force after completing the alignment between the microlens array and the liquid crystal display panel 100 can also be obtained by heating.

  Further, the microlens array may be formed of a material that thermally contracts, and may be subjected to a heat shrinking process in advance. Thereby, when peeling a support substrate by heating, or when adhering with a liquid crystal display panel, the malfunction by the thermal contraction of a micro lens array can be eliminated.

  Furthermore, the support substrate has transparency, and the position of the microlens array and the liquid crystal display panel can be adjusted based on the alignment mark provided on each. Thereby, alignment can be performed easily.

  ADVANTAGE OF THE INVENTION By this invention, the manufacturing method of a suitable microlens array which solved the malfunction in the manufacturing process by the thinness of a microlens array, and a microlens array can be provided.

  Hereinafter, embodiments to which the present invention can be applied will be described. The following description is to describe the embodiment of the present invention, and the present invention is not limited to the following embodiment. For the sake of clarity, the following description is omitted and simplified as appropriate. Moreover, those skilled in the art can easily change, add, and convert each element of the following embodiments within the scope of the present invention.

Embodiment 1
In this embodiment, an example in which one microlens array is attached to one liquid crystal display panel is shown. Although a small display such as a mobile phone or an in-vehicle monitor may be used, it is particularly suitable when manufacturing a large display such as a liquid crystal television or a liquid crystal personal computer display. FIG. 1 is a cross-sectional view of a liquid crystal display device. In FIG. 1, the liquid crystal display device is configured by sandwiching a liquid crystal layer 103 between two transparent substrates 101 and 102, which is a liquid crystal display panel 100 that realizes screen display with a plurality of pixels.

  The transparent substrates 101 and 102 are made of, for example, glass, polycarbonate, acrylic resin, or the like. A color filter layer 104 is formed on the surface in contact with the liquid crystal layer 103 which is the back surface side of the first transparent substrate 101 disposed on the front surface side of the liquid crystal display device. The color filter layer 104 is composed of, for example, three regions for displaying red (R), green (G), and blue (B) colors. The black matrix 105 is a light shielding film disposed between the pixels of the color filter layer 104 and prevents light leakage between the pixels.

  A transparent electrode 106 and an alignment film 107 are sequentially stacked on the back side of the color filter layer 104. The transparent electrode 106 is formed from a transparent conductive thin film (ITO: Indium Tin Oxide) by, for example, photolithography. The alignment film 107 is formed of an organic thin film such as a polyimide thin film that is a polymer material, for example, and plays a role of aligning liquid crystal molecules of the liquid crystal layer 103 in a predetermined direction. A TFT element 108 is formed on the second transparent substrate 102 disposed on the back side of the liquid crystal display device, and further a transparent electrode 106 and an alignment film 107 are laminated. The TFT element 108 is a switching element for driving a liquid crystal.

  A microlens array 200 as an optical component is provided on the back side of the second transparent substrate 102. The microlens array 200 has a rim 201 and a microlens 202. FIG. 2 is a plan view showing the positional relationship between the transparent substrate 102, the microlens array 200, and the rim 201. FIG.

1 and 2, the microlens array 200 is provided with a microlens 202 so as to be surrounded by a rim 201 provided on the outer peripheral edge. Here, the microlens array 200 is used for improving light utilization efficiency. The material and the configuration are such that a large number of microlenses 202 having a diameter of, for example, about 50 × 10 ⁻⁶ m are arranged on a glass or synthetic resin substrate or film. The material of the microlens 202 is made of a UV curable resin, a thermosetting resin, and a photoresist, and is appropriately selected depending on the manufacturing method. It is used with a transparent substrate 102 as a display panel that realizes screen display with a plurality of pixels, and includes a plurality of microlenses 202 provided corresponding to one or a plurality of pixels.

  A pixel is a minute unit that stores information on color / brightness by subdividing the entire LCD panel screen into a grid pattern. The amount of information stored in each pixel (bit: bit) represents the ability to express colors including light and dark. Is decided. The micro lens 202 generally refers to a minute lens having a diameter of several mm or less. The rim 201 is formed at a height equal to or higher than the apex of the microlens 202 without interruption along the outer peripheral edge on the back surface side of the second transparent substrate 102. The rim 201 is provided for the purpose of maintaining the polarizing plate 109 described later while maintaining flatness and for the purpose of fixing the microlens array 200 during the manufacturing process described later. The rim 201 is preferably made of the same material as the microlens 202.

  The polarizing plate 109 is an optical member having a function of transmitting only a specific polarization component with respect to incident light, and is attached to both side surfaces of the two transparent substrates 101 and 102. The spacers 110 are resin particles that control the height (cell gap) of the liquid crystal layer 103 between the transparent substrates 101 and 102, and a plurality of spacers 110 are scattered over the entire range between the transparent substrates 101 and 102.

  A large number of transparent substrates 101 and 102 are taken by a large mother substrate. FIG. 3 is a plan view of the mother substrate of the liquid crystal display panel 100. The liquid crystal display panel 100 is arranged on the mother substrate 1000 at a constant interval. The liquid crystal display panel 100 is formed in such a manner that each member is sandwiched between the transparent substrate 101 and the transparent substrate 102 as described above. In each region of the plurality of first substrates 101, a color filter is provided on the back surface side. The layer 104, the transparent electrode 106, and the alignment film 107 are stacked. Within each region of the plurality of second transparent substrates 102, a TFT element 108, a transparent electrode 106, and an alignment film 107 are stacked on the surface side. Each transparent substrate 101 or 102 is formed to be separable from the mother substrate 1000.

  That is, the liquid crystal display device in this embodiment is formed by sandwiching the liquid crystal layer 103, the color filter 104, the black matrix 105, the transparent electrode 106, the alignment film 107, the TFT element 108, and the spacer 110 between the transparent substrate 101 and the transparent substrate 102. The liquid crystal display panel 100, the microlens array 200, and the polarizing plate 109 provided on both sides are formed.

  The manufacturing process of the liquid crystal display device which is the subject of the present invention is a process of attaching the microlens array 200 to the liquid crystal display panel 100. FIG. 4 is a diagram showing a process of attaching the liquid crystal display panel 100 and the microlens array 200. First, as shown in FIG. 4A, the microlens array 200 is fixed to the transparent support substrate 300. Fixing is performed via the transparent adhesive sheet 301.

  The transparent support substrate 300 is a substrate for supporting the microlens array 200 in the manufacturing process and has transparency. Further, the thickness may be a thickness that can support the microlens array, but in this embodiment, the thickness is 3 mm or more. Although the material will not be specifically limited if it has transparency, such as glass and a synthetic resin, it is set as glass in this embodiment.

  The transparent adhesive sheet 301 is an adhesive layer for bonding the microlens array 200 and the transparent support substrate 300, and has transparency. In the figure, it is provided over the entire transparent support substrate 300, but only the rim 201 may be provided as long as an adhesive force sufficient to support the microlens array is provided.

  When the rim 201 is provided higher than the height of the microlens 202, the transparent adhesive sheet 301 inevitably contacts only the portion of the rim 201. In this case, there is no possibility that the adhesive remains in the microlens 202 and the optical performance is deteriorated. In this embodiment, only the rim is bonded.

  Since the transparent support substrate 300 is for supporting the microlens array 200 in the manufacturing process as described above, it is necessary to remove it at the end of the manufacturing process. Therefore, the transparent adhesive sheet 301 must be an adhesive method that does not impair the optical characteristics of the microlens array when the transparent support substrate 300 is removed from the microlens array 200. In this embodiment, an adhesive sheet that peels itself from the adherend by UV light irradiation is used. However, as long as the optical characteristics of the microlens array 200 are not impaired, a method of peeling by applying force may be used.

  Next, as shown in FIG. 4B, the microlens array 200 is lifted by the transparent support substrate 300 and bonded to the liquid crystal display panel 100. Here, each member constituting the liquid crystal display panel 100 is held between the transparent substrate 101 and the transparent substrate 102. Adhesion is performed via the UV curable resin 302. As shown in FIG. 4B, when only the rim 201 is adhered, the center portion bends due to the weight of the microlens array 200. Using this deflection, air may be released from the central portion to the outside as shown in FIG.

  Next, as shown in FIG. 4D, the microlens array 200 and the liquid crystal display panel 100 are aligned. The alignment between the microlens array and the liquid crystal display panel 100 will be described with reference to FIG. As shown in FIG. 5A, an alignment mark 303 indicating the position of the microlens 202 is provided in the microlens array 200. At the same time, an alignment mark 304 indicating the pixel position is provided on the liquid crystal display panel 100. Since the transparent support substrate 300 and the microlens array 200 have transparency, the alignment mark 303 and the alignment mark 304 can also be confirmed from above the transparent support substrate 300. Using this, as shown in FIG. 5B, the microlens array and the liquid crystal display panel are aligned (positioned) so that the alignment mark 303 and the alignment mark 304 are accurately overlapped.

  Here, the microlens array 200 is not fixed to the transparent support substrate 300, and if it is as it is, it has been described above that it is easy to break if it is glass. In the case of a low-rigid material such as a film, it is difficult to move the whole uniformly, so that it takes time to align all the alignment marks, resulting in poor production efficiency. If the microlens array 200 is fixed by the transparent support substrate 300 as in the present embodiment, the whole can be moved uniformly, so that the efficiency of the alignment work can be increased.

  Further, when the microlens array 200 is made of a glass material, the whole can be moved evenly even if it is not fixed to the transparent support substrate 300. However, in order to reduce the thickness of the liquid crystal display device, it is necessary to make the microlens array 200 thin, and since a thin glass substrate is very easy to break, the yield is bad, and if it is handled carefully so as not to break, that much It takes time, causing a drop in productivity. If the alignment operation is performed in a state of being fixed to the transparent support substrate 300, such a problem is solved. Accordingly, it is effective to fix the microlens array 200 to the transparent support substrate 300 even when the microlens array 200 is made of a glass material.

  Next, as shown in FIG. 4E, the transparent adhesive sheet 301 and the UV curable resin 302 are UV-exposed from the transparent support substrate 300 side. Since the transparent support substrate 300, the transparent adhesive sheet 301, and the microlens array 200 have transparency, the UV light is transmitted to at least the UV curable resin 302. The transparent adhesive sheet 301 is peeled by UV light irradiation, and the UV curable resin 302 is cured by UV light irradiation. Thereby, as shown in FIG. 4F, the transparent support substrate 300 is peeled off from the microlens array 200, and the microlens array 200 and the liquid crystal display panel 100 are fixed. In this manner, the microlens array 200 formed to be extremely thin can be attached to the liquid crystal display panel 100, and a suitably manufactured liquid crystal display panel 400 with a lens can be obtained.

  As described above, by performing the process of attaching the microlens array 200 to the liquid crystal display panel 100 while being fixed to the transparent support substrate 300, the yield can be improved.

  In this embodiment, the UV curable resin 302 is used as means for fixing the microlens array 200 and the liquid crystal display panel 100. However, the present invention is not limited to this. For example, a thermosetting resin may be used. In that case, a baking process for curing the thermosetting resin is required. However, when the microlens array 200 is a material that thermally contracts, such as PET, the dimensions of the microlens array 200 change when the baking process is performed as it is. The alignment with the liquid crystal display panel 100 is changed.

  When the microlens array 200 is made of a heat-shrinkable material, when the microlens array 200 is fixed to the liquid crystal display panel 100 with a thermosetting resin, a heat-shrink process may be performed in advance. For example, in the case where the microlens array 200 is PET, there is no problem in thermal shrinkage if the liquid crystal display panel 100 is fixed with a thermosetting resin having a curing temperature of 85 degrees after heat shrinking at 120 ° C. In this case, since UV exposure for fixing the microlens array 200 and the liquid crystal display panel 100 is not necessary, the transparent adhesive sheet 301 is not required to have transparency.

  Further, since the UV peelable sheet is used as the transparent adhesive sheet 301, the microlens array 200 and the liquid crystal display panel 100 can be transparently supported by UV exposure even when the microlens array 200 and the liquid crystal display panel 100 are fixed with a thermosetting resin. A step of peeling the substrate 300 is necessary. However, the transparent adhesive sheet 301 is not limited to a UV peelable sheet, and may be a heat peelable sheet, for example. A heat-peelable sheet is a sheet whose adhesive strength decreases when heated.

  For example, Nitto Denko's heat-peelable adhesive sheet, Riva Alpha (registered trademark), whose adhesive strength decreases at a little less than 90 ° C. is used. This heat-peelable pressure-sensitive adhesive sheet has microcapsules in the pressure-sensitive adhesive layer, and when heated, the microcapsules in the pressure-sensitive adhesive layer foam and fine irregularities are generated on the surface of the pressure-sensitive adhesive layer. As a result, what was originally in the form of a sheet and adhered to the adherend on the surface becomes adhesion at a point, and the contact area is significantly reduced. With this effect, the adhesive force can be lost in a short time.

  When a thermosetting resin is used in place of the UV curable resin 302, if a heat-peelable sheet is used as the transparent adhesive sheet, peeling and curing can be performed in one step as in the case of the UV exposure in FIG. 4 (f). Is more preferable.

  Note that, here, the transparent support substrate 300 and the rim 201 are bonded or adhered as an example, but the apex of the microlenses of the microlens array 200 may be adhered and held by the transparent support substrate 300. Alternatively, after the microlens array 200 is fixed to the transparent support substrate 300, an adhesive is spin-coated or slide-coated on the bonding surface between the microlens array 200 and the liquid crystal display panel 100 and bonded to the liquid crystal display panel 100 in advance. Good. Also in this case, there is a possibility that the microlens array 200 is broken when it is a thin glass, and if it is a film material, coating of an adhesive becomes very difficult. However, if the adhesive is coated after the microlens array 200 is fixed to the transparent support substrate 300 as in the present invention, the coating can be performed easily and uniformly.

Embodiment 2
In the present embodiment, an example in which a large number of liquid crystal display panels are simultaneously manufactured in the state of a mother substrate as shown in FIG. 3 will be described. In other words, this is a method for manufacturing a plurality of liquid crystal display devices at the same time, and the rest is the same as in the first embodiment. Such a manufacturing method is suitable for manufacturing a small display such as a mobile phone or an in-vehicle monitor. FIG. 6 is a plan view of the mother lens substrate 2000 of the microlens array 200. An alignment mark 3030 is provided at the corner of the mother lens substrate 2000 including a large number of microlens arrays 200. A rim 2010 is provided on the outer periphery. The alignment mark 3030 is a mark indicating a position for causing the microlens 202 included in the microlens array 200 to correspond to a pixel included in the mother substrate 1000 of the liquid crystal display panel 100 shown in FIG. The rim 2010 serves as an adhesion portion for adhering to the mother support substrate 3000 that fixes the mother lens substrate 2000.

  Next, a process for attaching the mother substrate 1000 and the mother lens substrate 2000 will be described. FIG. 7 is a diagram showing a process of attaching the mother substrate 1000 and the mother lens substrate 2000. FIG. First, as shown in FIG. 7A, the mother lens substrate 2000 is fixed to the mother support substrate 3000. Fixing is performed via the transparent adhesive sheet 301.

  The mother support substrate 3000 is a substrate for supporting the mother lens substrate 2000 in the manufacturing process and has transparency. Further, the thickness may be a thickness that can support the mother lens substrate 2000, but in this embodiment, the thickness is set to 3 mm or more. Although the material will not be specifically limited if it has transparency, such as glass and a synthetic resin, it is set as glass in this embodiment.

  The transparent adhesive sheet 301 is an adhesive layer for bonding the mother lens substrate 2000 and the mother support substrate 3000 and has transparency. In the figure, it is provided over the entire mother support substrate 3000, but only the rim 2010 may be provided as long as an adhesive force sufficient to support the microlens array is provided.

  When the rim 2010 is provided higher than the height of the microlens 202 included in the microlens array 200, the transparent adhesive sheet 301 inevitably contacts only the rim 2010, and therefore only the rim 2010. What is necessary is just to provide. In this case, there is no possibility that the adhesive remains in the microlens 202 and the optical performance is deteriorated. In this embodiment, only the rim 2010 is bonded.

  Since the mother support substrate 3000 is for supporting the mother lens substrate 2000 in the manufacturing process as described above, it is necessary to remove it at the end of the manufacturing process. Therefore, the transparent adhesive sheet 301 must be an adhesive method that does not impair the optical characteristics of the microlens array 200 when the mother support substrate 3000 is removed from the mother lens substrate 2000. In this embodiment, an adhesive sheet that peels itself from the adherend by UV light irradiation is used. However, as long as the optical characteristics of the microlens array 200 are not impaired, a method of peeling by applying force may be used.

  Next, as shown in FIG. 7B, the mother lens substrate 2000 is lifted by the mother support substrate 3000 and bonded to the mother substrate 1000. Adhesion is performed via the UV curable resin 302. As shown in FIG. 7B, when only the rim 2010 is adhered, the center portion bends due to the weight of the mother lens substrate 2000. Using this deflection, air may be released from the center to the outside as shown in FIG.

  Next, as shown in FIG. 7D, the mother lens substrate 2000 and the mother substrate 1000 are aligned. The alignment method is a method of overlaying the alignment mark 3040 provided on the mother substrate 1000 and the alignment mark 3030 provided on the mother lens substrate 2000, and is the same as the method according to FIG. 5 of the first embodiment. I will omit it.

  Next, as shown in FIG. 7E, the transparent adhesive sheet 301 and the UV curable resin 302 are UV-exposed from the mother support substrate 3000 side. Since the mother support substrate 3000, the transparent adhesive sheet 301, and the mother lens substrate 2000 have transparency, the UV light passes through at least the UV curable resin 302. The transparent adhesive sheet 301 is peeled by UV light irradiation, and the UV curable resin 302 is cured by UV light irradiation. As a result, as shown in FIG. 4F, the mother support substrate 3000 is peeled from the mother lens substrate 2000, and the microlens array 200 and the mother substrate 1000 are fixed.

  Next, as shown in FIG. 7G, each lens-equipped liquid crystal display panel 400 is cut. In this way, the microlens array 200 formed to be extremely thin could be attached to the liquid crystal display panel 100, and a suitably manufactured liquid crystal display panel 400 with a lens could be obtained. Further, by forming a large number of pieces at a time, the productivity can be improved and the cost can be reduced.

  In FIG. 6, the rim 2010 is provided only on the outer peripheral portion of the mother lens substrate 2000, but may be provided on the outer periphery of each microlens array 200 or may be provided for each of the plurality of microlens arrays 200. The possibility of using different materials for the transparent adhesive sheet 301 and the UV curable resin 302 is the same as in the first embodiment.

  Note that, here, the mother support substrate 3000 and the rim 2010 are bonded or adhered to each other as an example. However, the mother support substrate 3000 may hold the apex of the microlens of the mother lens substrate 2000 in an adhesive manner. Similarly to the first embodiment, after fixing the mother lens substrate 2000 to the mother support substrate 3000, an adhesive may be applied to the bonding surface between the mother lens substrate 2000 and the mother substrate 1000 and bonded to the mother substrate 1000. Good. Since the effect of having the mother support substrate 3000 is the same as that of the first embodiment, the description thereof is omitted.

It is sectional drawing of the liquid crystal display device concerning this invention. It is a top view which shows the arrangement | positioning relationship of a transparent substrate, a micro lens array, and a rim | limb. It is a plan view of a mother substrate of a transparent substrate, It is a figure showing the bonding process of the liquid crystal display panel 100 and the micro lens array 200. FIG. It is a figure showing the alignment method of the liquid crystal display panel 100 and the micro lens array 200. FIG. It is a plan view of a mother lens substrate of a microlens array, It is a figure showing the bonding process of the mother board | substrate 1000 and the mother lens board | substrate 2000. FIG. It is sectional drawing of the liquid crystal display device concerning a prior art.

Explanation of symbols

1 polarizing film, 2 transparent substrate, 3 black matrix, 4 color filter layer,
5 transparent electrode, 6 alignment film, 7 liquid crystal layer, 8 spacer, 9 alignment film,
10 transparent electrode, 11 TFT element, 12 transparent substrate, 13 polarizing film,
100 liquid crystal display panel, 101 transparent substrate, 102 transparent substrate,
103 liquid crystal layer, 104 color filter, 105 black matrix,
106 transparent electrode, 107 alignment film, 108 element, 109 polarizing plate,
110 spacer, 121 rim, 122 micro lens array,
200 microlens array, 201 rim, 202 microlens,
300 transparent support substrate, 301 transparent adhesive sheet, 302 UV curable resin,
303 alignment mark, 304 alignment mark,
400 liquid crystal display panel, 1000 mother board,
2000 mother lens substrate, 2010 rim, 3000 mother support substrate,
3030 alignment mark, 3040 alignment mark,

Claims (9)

A method of manufacturing a liquid crystal display device in which a microlens array is bonded to a liquid crystal display panel,
Fixing a support substrate having a rigidity higher than that of the microlens array on a surface opposite to a surface to be bonded to the liquid crystal display device of the microlens array;
Adjusting the bonding position of the microlens array and the liquid crystal display panel by moving the support substrate;
Bonding the microlens array and the liquid crystal display panel;
Peeling the support substrate from the microlens array;
A method of manufacturing a liquid crystal display device having   The method for manufacturing a liquid crystal display device according to claim 1, wherein the support substrate is bonded in a region other than the microlens of the microlens array.   The method for manufacturing a liquid crystal display device according to claim 2, wherein the adhesion portion is an outer peripheral portion of a microlens array corresponding to one or a plurality of liquid crystal display panels.   4. The method of manufacturing a liquid crystal display device according to claim 1, wherein the microlens array and the support substrate are bonded by an adhesive layer having a property of being peeled off by UV light irradiation.   6. The liquid crystal display device according to claim 1, wherein the microlens array and the support substrate are bonded to each other by an adhesive layer having a property of reducing adhesive force by heating. Production method.   The method of manufacturing a liquid crystal display device according to claim 1, wherein the microlens array and the liquid crystal display panel are bonded with a UV curable resin.   6. The method for manufacturing a liquid crystal display device according to claim 1, wherein the microlens array and the liquid crystal display panel are bonded to each other by a thermosetting resin.   8. The method of manufacturing a liquid crystal display device according to claim 5, wherein the microlens array is formed of a material that thermally contracts and is subjected to a heat shrinking process in advance. The support substrate has transparency,
9. The method of manufacturing a liquid crystal display device according to claim 1, wherein the bonding position of the microlens array and the liquid crystal display panel is adjusted based on an alignment mark provided on each of the microlens array and the liquid crystal display panel.

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