Patent Publication Number: US-2015068674-A1

Title: Method for manufacturing display device

Description:
TECHNICAL FIELD 
     The present invention relates to a method of manufacturing a display device. 
     BACKGROUND ART 
     Display devices including display panels such as liquid crystal panels are used in electronic devices such as mobile information devices such as mobile phones, smartphones, and PDAs; computers; and television receivers. Among such display devices, those that include a function for displaying three-dimensional images relying on a property of human eyes in which the left and right eyes see from differing perspectives (so-called binocular parallax) allowing a three-dimensional image to be perceived are known, such a function being known as the “parallax barrier mode.” An example of a display device including such a function to display three dimensional images is that disclosed in Patent Document 1 below, and in the disclosed device, a parallax barrier panel having a barrier light-shielding layer is attached to a liquid crystal panel, which displays images. One known example of this type of display device is that disclosed in Patent Document 1 below. 
     RELATED ART DOCUMENTS 
     Patent Documents 
     Patent Document 1: Japanese Patent Application Laid-Open Publication No. 2005-181410 
     Problems to be Solved by the Invention 
     In the device disclosed in Patent Document 1, a liquid crystal panel, which displays images, and a parallax barrier panel are attached to each other through a bonding resin layer, and the amount of the bonding resin layer leaking out from the edge face of the panel having a smaller area is restricted to within a certain numerical range. However, due to individual differences in the coating devices used to coat the bonding resin layer and the pressurizing device used for attaching, environmental changes such as changes in temperature and humidity, and the like, it is difficult to strictly control the amount of the bonding resin layer leaking out, and there were cases in which the amount of the bonding resin layer leaking out was excessive. If an excessive amount of the bonding resin layer leaked out, there was a possibility that the this bonding resin layer that has leaked out could stick to the outer surfaces of the liquid crystal panel and the parallax barrier panel, thus reducing display quality. 
     SUMMARY OF THE INVENTION 
     The present invention is completed in view of the above-mentioned situation, and an object thereof is to mitigate leakage of the adhesive material. 
     Means for Solving the Problems 
     A method of manufacturing a display device of the present invention includes: coating a liquid adhesive material on an opposing surface of at least either of a display panel that displays images and a function panel to be stacked on the display panel; attaching the display panel to the function panel through the adhesive material; and curing an overlapping portion of the adhesive material that overlaps an outer edge portion of at least one of the display panel and the function panel in a plan view. 
     In this manner, in the step of coating the adhesive material, the liquid adhesive material is coated on at least one of opposing faces of the display panel and the function panel, and in the attaching step thereafter, the display panel and the function panel are attached through the adhesive material. The method of manufacturing the display device includes the partial curing step, and by curing the overlapping portion of the adhesive material overlapping in a plan view the outer edge portion of at least one of the display panel and the function panel, the adhesive material is partially cured, and thus, it is possible to stop the non-cured central portion of the adhesive material from leaking out due to the cured overlapping portion. As a result, even if the amount of adhesive material coated during the step of coating the adhesive material varies or if the pressure applied to the display panel and the function panel in the step of attaching these panels to each other varies, the adhesive material is less susceptible to leaking to the outside of either of the outer edges of the display panel and the function panel. Therefore, a situation in which the adhesive material sticks to the outer surfaces of the display panel or the function panel, for example, is prevented, and high display quality can be maintained. 
     As embodiments of the present invention, the following configurations are preferred. 
     (1) In the step of partially curing the overlapping portion of the adhesive material, a degree of curing of an outer edge portion of the overlapping portion located towards an outside is relatively high, and the degree of curing of an inner edge portion of the overlapping portion located towards an inside is relatively low. In this manner, when performing the step of partial curing, the degree of curing increases in the order of the non-cured central portion of the adhesive material, the inner edge portion of the overlapping portion, and the outer edge portion of the overlapping portion, which means that the degree of curing changes in a stepwise fashion. Thus, stress that could result from contraction due to curing in the boundary between the non-cured central portion and the overlapping portion can be mitigated, and thus, a situation in which display quality is worsened as a result of residual stress in the adhesive material acting on the display panel, for example, is less likely to occur. 
     (2) In the step of coating the adhesive material, a photocurable adhesive material is coated as the adhesive material, and in the step of partially curing the overlapping portion of the adhesive material, light to induce curing is radiated on the overlapping portion of the photocurable adhesive material. In this manner, in the partial curing step, light to induce curing in the overlapping portion of the photocurable adhesive material is radiated, and thus, the photocurable adhesive material is partially cured, which means that it is possible to set with high accuracy the range of the photocurable adhesive material to be cured, resulting in partial curing of the photocurable adhesive material being performed with greater reliability. Also, the photocurable adhesive material can be cured faster than thermosetting adhesive materials or the like, for example, and thus, the cycle time can be shortened. 
     (3) In the step of coating the adhesive material, an ultraviolet curable adhesive material is coated as the photocurable adhesive material, and in the step of partially curing the overlapping portion of the adhesive material, ultraviolet rays to induce curing are radiated on the overlapping portion of the ultraviolet curable adhesive material. In this manner, compared to a case in which a visible light curable adhesive material is used as the photocurable adhesive material, it is possible to set up with relative ease a configuration in which unwanted curing does not occur from when the adhesive material coating step is performed to when the attaching step is performed, and thus, it is possible to reduce costs such as equipment costs. Also, the ultraviolet curable adhesive material can be cured quickly, and thus, cycle time can be further reduced. 
     (4) In the step of partially curing the overlapping portion of the adhesive material, the ultraviolet rays are radiated on the overlapping portion through the function panel. In this manner, compared to a case in which ultraviolet rays are radiated on the overlapping portion through the display panel, a problem in which structures provided in the display panel undergo a change in properties becomes unlikely to occur. As a result, the image displayed on the display panel can have excellent display quality. 
     (5) The method of manufacturing a display device further includes: manufacturing at least one of the display panel and the function panel, made by attaching together a pair of light-transmissive substrates, such that one of the pair of substrates has a projection that projects further outward than another of the pair of substrates along an entire periphery thereof is further included, wherein, in the step of partially curing the overlapping portion of the adhesive material, the outer edge portion of the overlapping portion towards the outside is irradiated with the light through the projection of the one of the pair of substrates, whereas the inner edge portion of the overlapping portion located towards the inside is irradiated with light through the pair of substrates. In this manner, when performing the partial curing step, light is radiated on the outer edge portion only through the projection of one of the substrates, and thus, the amount of illumination light on the outer edge portion and the resulting degree of curing become relatively high, whereas light is radiated on the inner edge portion through both of the pair of substrates, and thus, the amount of light radiated on the inner edge portion becomes small due to absorption and reflection of light by the other substrate, thus resulting in the degree of curing therein to be low. As a result, the degree of curing becomes higher in the order of the non-cured central portion of the adhesive material, the inner edge portion of the overlapping portion, and the outer edge portion of the overlapping portion and the degree of curing changes in a stepwise fashion, and thus, stress that could occur due to contraction resulting from curing in the boundary between the non-cured central portion and the overlapping portion is mitigated. Therefore, a situation in which display quality is worsened due to residual stress in the adhesive material acting on the display panel, for example, is mitigated. Furthermore, in the step of partial curing, the amount of illumination light on the overlapping portion is differed for the respective portions, relying on the step formed between the pair of substrates, and thus, costs associated with the device that radiates light can be reduced. 
     (6) In the step of attaching, the display panel is attached to the function panel such that the another of the pair of substrates faces the adhesive material. In this manner, the distance between the display panel and the function panel is greater in the area where the projection is provided in one of the substrates than in areas where the other substrate is provided. As a result, in the space where the adhesive material is disposed, the area where the outer edge portion of the overlapping portion is present is greater than the area where the inner edge portion of the overlapping portion is present, and thus, leakage of the adhesive material is further mitigated. 
     (7) The step of partially curing the overlapping portion of the adhesive material is performed simultaneously to the step of attaching. In this manner, compared to a case in which the partial curing step and the attaching step were performed independently of each other, it is possible to shorten the amount of time taken for the entire manufacturing process. 
     (8) In the step of coating the adhesive material, the adhesive material is coated on a portion of at least one of the respective opposing surfaces of the display panel and the function panel, and in the step of attaching, the adhesive material is spread under pressure by applying pressure to at least one of the display panel and the function panel. In this manner, in the attaching step, pressure is applied to at least one of the display panel and the function panel, thus spreading under pressure the liquid adhesive material, and the spreading adhesive material is cured in the overlapping portion, and thus, the non-cured central portion can be prevented from leaking outside of the overlapping portion. In this manner, compared to a case in which the adhesive material is coated in a planar form on the opposing surface, it is possible to improve the efficiency of coating the adhesive material, thereby being suitable for reasons such as a reduction in cycle time. 
     (9) In the step of coating the adhesive material, the adhesive material is coated onto a central portion surrounded by the outer edge portion of at least one of the display panel and the function panel, and in the step of partially curing the overlapping portion of the adhesive material, curing is performed on the adhesive material, spreading in the step of attaching, prior to the adhesive material reaching the outer edge portion of the display panel and the function panel. In this manner, it is possible to more reliably cure the overlapping portion of the adhesive material that has reached the outer edge portion of the display panel and the function panel by being spread in the attaching step. As a result, it is possible to more reliably prevent leakage of the non-cured portion of the adhesive material. 
     (10) In the step of partially curing the overlapping portion of the adhesive material, the overlapping portion is half-cured. In this manner, even if air bubbles form in the non-cured portion of the adhesive material in the attaching step, the overlapping portion is half-cured, and thus, the air bubbles in the non-cured portion can be released outside through the overlapping portion. As a result, the remaining of air bubbles in the adhesive material becomes unlikely, which means that display quality of images displayed in the display panel can be maintained at a high level. 
     (11) The method of manufacturing a display device further includes: adjusting a position of the display panel relative to the function panel in a direction along surfaces thereof, after the step of attaching and the step of partially curing the overlapping portion of the adhesive material. In this manner, in the partial curing step, the overlapping portion is half-cured, and thus, in the position adjusting step performed thereafter, it is possible to position the display panel and the function panel with respect to each other in the direction along the surfaces thereof. As a result, the positioning accuracy of the display panel and the function panel can be made high. 
     (12) In the step of attaching, a parallax barrier panel that can split by parallax an image displayed in the display panel is attached to the display panel as the function panel. In this manner, in the position adjusting step, positioning accuracy in the direction along the surfaces of the display panel and the parallax barrier panel can be made high, and thus, it is possible to more suitably exhibit the function of the parallax barrier panel, thereby making it possible for a user of the display device to perceive an excellent three dimensional image. 
     (13) In the step of attaching, a touch panel that can detect an input position by a user of the display device is attached to the display panel as the function panel. In this manner, in the position adjusting step, the positioning accuracy in the direction along the surfaces of the display panel and the touch panel can be made high, and thus, it is possible to more suitably exhibit the function of the touch panel, thereby making it possible to detect with greater accuracy a position inputted by a user of the display device. 
     (14) In the step of partially curing the overlapping portion of the adhesive material, curing is performed on the overlapping portion of the adhesive material that overlaps in a plan view a non-display region surrounding a display region where images are displayed in the display panel. In this manner, even if uneven curing occurs in the overlapping portion of the adhesive material during the partial curing step, the overlapping portion is the portion of the display panel overlapping the non-display region in a plan view, and thus, a situation in which display quality of images displayed in the display region is reduced by the overlapping portion is prevented. 
     Effects of the Invention 
     According to the present invention, it is possible to suppress leakage of the adhesive material. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic cross-sectional view of a liquid crystal display device according to Embodiment 1 of the present invention. 
         FIG. 2  is a plan view of a liquid crystal display device. 
         FIG. 3  is a cross-sectional view of a liquid crystal display panel and a parallax barrier panel. 
         FIG. 4  is a plan view of the liquid crystal display panel connected to a flexible substrate for display. 
         FIG. 5  is a plan view showing an arrangement of pixel electrodes and respective wiring lines on an array substrate of the liquid crystal display panel. 
         FIG. 6  is a plan view showing an arrangement of colored portions on a CF substrate of the liquid crystal display panel. 
         FIG. 7  is a cross-sectional view showing a cross-sectional configuration of a display region of the liquid crystal display panel. 
         FIG. 8  is a plan view of a parallax barrier panel connected to a flexible substrate for a barrier. 
         FIG. 9  is a plan view of a first substrate of the parallax barrier panel. 
         FIG. 10  is a plan view of a second substrate of the parallax barrier panel. 
         FIG. 11  is a drawing for describing schematically a relation between a barrier portion and a barrier opening of the parallax barrier panel, and right eye pixels and left eye pixels of the liquid crystal display panel. 
         FIG. 12  is a plan view of a parallax barrier panel after a step of coating by an adhesive has been performed thereon. 
         FIG. 13  is a cross-sectional view showing a state prior to the liquid crystal display panel being attached to the parallax barrier panel after having been coated by the adhesive. 
         FIG. 14  is a cross-sectional view showing a state in which the parallax barrier panel, which has been coated by the adhesive, is attached to the liquid crystal display panel and ultraviolet rays are radiated towards areas overlapping the adhesive material, thereby performing the step of attaching and a step of curing portions. 
         FIG. 15  is a cross-sectional view showing a state in which overlapping portions of the adhesive material that has spread by being pressed by the liquid crystal display panel have been cured by ultraviolet rays. 
         FIG. 16  is a cross-sectional view of  FIG. 15  along the line xvi-xvi. 
         FIG. 17  is a cross-sectional view showing a state in which a position adjusting step has been performed such that the liquid crystal display panel and the parallax barrier panel are positioned in a direction along the plate surfaces. 
         FIG. 18  is a cross-sectional view showing a state in which a step of curing all of the adhesive material has been performed. 
         FIG. 19  is a cross-sectional view of a liquid crystal display panel and a touch panel according to Embodiment 2 of the present invention. 
         FIG. 20  is a plan view of the touch panel. 
         FIG. 21  is a cross-sectional view showing a state prior to the liquid crystal display panel being attached to the touch panel after having been coated by the adhesive. 
         FIG. 22  is a cross-sectional view showing a state in which overlapping portions of the adhesive material that has spread by being pressed by the touch panel have been cured by ultraviolet rays. 
         FIG. 23  is a cross-sectional view showing a state in which a step of curing all of the adhesive material has been performed. 
         FIG. 24  is a cross-sectional view of a liquid crystal display panel and a protective panel according to Embodiment 3 of the present invention. 
         FIG. 25  is a cross-sectional view of a liquid crystal display panel and parallax barrier panel having a touch panel according to Embodiment 4 of the present invention. 
         FIG. 26  is a cross-sectional view of a liquid crystal display panel, a parallax barrier panel, and a protective panel according to Embodiment 5 of the present invention. 
         FIG. 27  is a cross-sectional view showing a state in which a step of curing a portion of the adhesive material is performed by radiating ultraviolet rays towards the overlapping portion of the adhesive material in a method of manufacturing a liquid crystal display device according to Embodiment 6 of the present invention. 
         FIG. 28  is a cross-sectional view showing a state in which a step of curing a portion of the adhesive material is performed by radiating ultraviolet rays towards the overlapping portion of the adhesive material in a method of manufacturing a liquid crystal display device according to Embodiment 7 of the present invention. 
         FIG. 29  is a cross-sectional view showing a state in which a step of curing a portion of the adhesive material is performed by radiating ultraviolet rays towards the overlapping portion of the adhesive material in a method of manufacturing a liquid crystal display device according to Embodiment 8 of the present invention. 
         FIG. 30  is a plan view in which a step of coating an adhesive material is performed such that the adhesive material is coated onto the parallax barrier panel in a planar form in a method of manufacturing a liquid crystal display device according to Embodiment 9 of the present invention. 
         FIG. 31  is a cross-sectional view showing a state in which a step of curing a portion of the adhesive material is performed by radiating ultraviolet rays on the overlapping portion of the adhesive material. 
         FIG. 32  is a plan view of a parallax barrier panel showing a state in which the overlapping portion of the adhesive material has been cured. 
         FIG. 33  is a cross-sectional view showing a state prior to the liquid crystal display panel being attached to the parallax barrier panel. 
         FIG. 34  is a cross-sectional view showing a state in which a step of curing all of the adhesive material has been performed. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     Embodiment 1 
     Embodiment 1 of the present invention will be described with reference to  FIGS. 1 to 18 . In the present embodiment, a liquid crystal display device  10  (display device) and a method of manufacturing the same will be described as an example. The drawings indicate an X axis, a Y axis, and a Z axis in a portion of the drawings, and each of the axes indicates the same direction for the respective drawings. The upper side in  FIG. 1  is the front side and the lower side is the rear side. 
     First, the structure of the liquid crystal display device  10  will be explained. As shown in  FIGS. 1 and 2 , the liquid crystal display device  10  includes: a liquid crystal display panel  11  (display panel) that displays images, the liquid crystal display panel  11  having a rectangular shape overall in a plan view and being used either in portrait (vertical) or landscape (horizontal) mode; a parallax barrier panel  12  (function panel) having a parallax barrier function; and a backlight device  13  (illumination device) that is an external light source that radiates light towards the liquid crystal display panel  11  and the parallax barrier panel  12 . Furthermore, the liquid crystal display device  10  includes a bezel  14  that holds together (sandwiches) the liquid crystal display panel  11  and the parallax barrier panel  12 , and a case  15  that houses the backlight device  12  while being attached to the bezel  14 . 
     Of these, as shown in  FIG. 3 , the liquid crystal display panel  11  and the parallax barrier panel  12  are attached together integrally by an adhesive material  28  therebetween, the liquid crystal display panel  11  and the parallax barrier panel  12  have plate surfaces facing each other, the liquid crystal display panel  11  being disposed towards the front (light exiting side; viewer side), the parallax barrier panel  12  being disposed towards the rear (backlight device  13  side; side opposite to the light exiting side). The adhesive material  28  is made of a photocurable resin having sufficient light transmittance so as to be almost transparent, and is a photocurable adhesive material. The photocurable resin included in the adhesive material  28  has the property of being cured (increased viscosity) when irradiated with light of a certain wavelength, and in the present embodiment, this photocurable resin is specifically an ultraviolet curable resin material cured by ultraviolet rays (UV rays). In other words, the adhesive material  28  of the present embodiment is an ultraviolet curable adhesive material. The liquid crystal display device  10  according to the present embodiment can be used in various electronic devices such as portable information devices (including electronic books and PDAs), mobile telephones (including smartphones), laptops (including tablet PCs and the like), digital photo frames, and portable gaming devices. Thus, the screen size of the liquid crystal display panel  11  and the parallax barrier panel  12  constituting the liquid crystal display device  10  is between a few inches and ten or more inches, for example, and generally falls under the category of mid to small size. 
     The liquid crystal display panel  11  will be described. As shown in  FIGS. 3 ,  4 , and  7 , the liquid crystal display panel  11  includes a pair of mostly transparent (transmitting light) glass substrates  11   a  and  11   b , which are rectangular, and a liquid crystal layer  20  including liquid crystal molecules interposed (sandwiched) between the substrates  11   a  and  11   b , liquid crystal molecules being a substance that changes in optical properties due to an applied electric field, and the substrates  11   a  and  11   b  are attached together by a sealing member  31  having a frame shape in a plan view and maintaining a gap (cell thickness) equal to the thickness of the liquid crystal layer  20 . The pair of substrates  11   a  and  11   b  are made of non-alkali glass, which contains almost no alkali, for example, and are specifically “EAGLE XG (registered trademark)” made by Corning. Of the substrates  11   a  and  11   b , the front substrate  11   a  (CF substrate  11   a ) has a longer side dimension that is shorter than that of the rear substrate  11   b  (array substrate  11   b ), and the substrate  11   a  is attached to the substrate  11   b  such that three sides (other shorter side edge (upper side in  FIG. 4 ) and a pair of longer side edges) to the exclusion of one shorter side edge (lower side in  FIG. 4 ) coincide in position. As shown in  FIG. 4 , the liquid crystal display panel  11  has a display region AA (surrounded by the one-dot-chain line in  FIG. 4 ) where images are displayed, and a non-display region NAA having a substantially frame shape surrounding the display region AA and where images are not displayed. The sealing member  31  is disposed on an inner edge of the non-display region NAA adjacent to the display region AA, and surrounds the display region AA. As shown in  FIG. 3 , the outer surfaces of the substrates  11   a  and  11   b  respectively have a pair of front and rear polarizing plates  11   c  and  11   d  attached thereto. The polarizing plates  11   c  and  11   d  are slightly smaller than the respective substrates  11   a  and  11   b  but have a larger size than the display region AA (region surrounded by the sealing member  31 ). The rear plate surface of the substrate  11   b  and the polarizing plate  11   d  disposed towards the rear, that is the surface facing the parallax barrier panel  12  is provided with the already described adhesive material  28 . The adhesive  28  is disposed so as to be further out than at least the rear polarizing plate  11   d  and the display region AA, but the outer edges of the adhesive  28  are disposed further inside than the outer edges of the substrate  11   b . As shown in  FIG. 2 , when the liquid crystal display panel  11  is used in portrait mode, the longer side direction (Y axis direction) coincides with the vertical direction (up-and-down direction) as seen by the viewer, and the shorter side direction (X axis direction) coincides with the horizontal direction (left-and-right direction; direction in which both eyes LE and RE are aligned) as seen by the viewer, and when the liquid crystal display panel  11  is used in landscape mode, the longer side direction coincides with the horizontal direction as seen by the viewer and the shorter side direction coincides with the vertical direction as seen by the viewer. 
     Of the two substrates  11   a  and  11   b , one on the front side (front surface side) is a CF substrate  11   a , and the other on the rear side (rear surface side) is an array substrate  11   b . As shown in  FIGS. 5 and 7 , the display region AA in the inner surface of the array substrate  11   b  (plate surface facing the liquid crystal layer  20  and the CF substrate  11   a ) is provided with many TFTs  16  (thin film transistors), which are switching elements, and pixel electrodes  17  arranged in a matrix, and gate wiring lines  18  and source wiring lines  19  surround each of the TFTs  16  and the pixel electrodes  17  to form a grid pattern. The pixel electrodes  17  are made of a mostly transparent light-transmissive conductive material such as ITO (indium tin oxide). On the other hand, the gate wiring lines  18  and the source wiring lines  19  are both made of a light-shielding metal such as copper or titanium. The gate wiring lines  18  and the source wiring lines  19  are respectively connected to the gate electrodes and the source electrodes of the TFTs  16 , and the pixel electrodes  15  are connected to the drain electrodes of the TFTs  16 , respectively. As shown in  FIG. 4 , the gate wiring lines  18  and the source wiring lines  19  are drawn to the non-display region NAA on the inner surface of the array substrate  11   b , and a driver DR for driving the liquid crystal is connected to terminals formed on the ends of the gate wiring lines  18  and the source wiring lines  19 . The driver DR is mounted by the COG (chip on glass) method on one edge of the array substrate  11   b  in the longer side direction, and can send a driving signal to the wiring lines  18  and  19  connected thereto. One end of the flexible substrate  21  for display is press-connected to a position adjacent to the driver DR on the inner face of the array substrate  11   b  (non-display region NAA) through an anisotropic conductive film ACF. Another end of the flexible substrate  21  for display is connected to a control substrate that is not shown, and thus, it is possible to send to the driver DR an image signal sent from the control substrate. 
     On the other hand, as shown in  FIGS. 6 and 7 , many color filters are provided in areas of the inner surface of the CF substrate  11   a  (facing the liquid crystal layer  20  and the array substrate  11   b ) overlapping the respective pixel electrodes  17  in a plan view on the array substrate  11   b . As for the color filters, the colored portions  22  thereof, which are colored R (red), G (green), and B (blue), respectively, are aligned alternately along the X-axis direction. The colored portions  22  have a rectangular shape in a plan view, and the longer side direction and shorter side direction thereof match the longer side direction and shorter side direction of the substrates  11   a  and  11   b , and a plurality of the colored portions  22  are arranged in a matrix in the X axis direction and the Y axis direction on the CF substrate  11   a . Between each of the colored portions  22  constituting the color filters, a light-shielding portion  23  (black matrix) is formed in a grid pattern in order to prevent color mixing. The light-shielding portion  23  is positioned over the gate wiring lines  18  and the source wiring lines  19  on the array substrate  11   b  in a plan view. In the liquid crystal display panel  11 , a group of three pixel electrodes  17  respectively corresponding to three colored portions  22  having the colors R, G, and B constitute one pixel PX, which is a display unit, and the pixels PX are arranged in a matrix along the surfaces of the substrates  11   a  and  11   b , or in other words, along the display surface (X axis direction and Y axis direction. As shown in  FIG. 7 , the surfaces of the respective colored portions  22  and the light-shielding portions  23  are provided with an opposite electrode  24  facing the pixel electrodes  17  on the array substrate  11   b . Alignment films  25  and  26 , which are disposed to face the liquid crystal layer  20 , for orienting the liquid crystal molecules included in the liquid crystal layer  20  are formed on the inner surfaces of the substrates  11   a  and  11   b.    
     The backlight device  13  will be described in a simple manner prior to describing the parallax barrier panel  12 . The backlight device  13  is of a so-called edge-lit (side-lit) type, and includes light sources, a substantially box-shaped chassis for housing the light sources while being open on the front (facing the liquid crystal display panel  11 ; direction towards which light exits), a light guide member having an edge portion facing the light sources and guiding light from the light sources and emitting this light towards the opening of the chassis (light-exiting portion), and optical members disposed to cover the opening of the chassis. The light emitted from the light sources enters the edge of the light guide member, is propagated inside the light guide member, and then is emitted towards the opening of the chassis, after which it is converted into planar light having an even luminance distribution across a plane by the optical members, and then is emitted towards the liquid crystal display panel  11 . The driving of the TFTs  16  in the liquid crystal display panel  11  to selectively control the transmittance of light through the display surface in the liquid crystal display panel  11  allows a prescribed image to be displayed in the display surface. Detailed depictions of the light sources, the chassis, the light guide member, and the optical members will be omitted. 
     Next, the parallax barrier panel  12  will be described in detail. As shown in  FIGS. 3 and 8 , the parallax barrier panel  12  includes a pair of transparent (transmitting light) glass substrates  12   a  and  12   b  that are rectangular in a plan view, and a liquid crystal layer  27  including liquid crystal molecules interposed (sandwiched) between the substrates  12   a  and  12   b , the liquid crystal molecules being a substance that changes in optical characteristics due to an applied electric field, and the substrates  12   a  and  12   b  are attached to each other by a sealing member  32  having a frame-shape in a plan view and maintaining a gap (cell thickness) between the substrates  12   a  and  12   b  equal to the thickness of the liquid crystal layer  27 . The pair of substrates  12   a  and  12   b  are made of non-alkali glass, which contains almost no alkali, for example, and are specifically “EAGLE XG (registered trademark)” made by Corning. As shown in  FIG. 8 , the parallax barrier panel  12  has a display-overlapping region OAA (area in  FIG. 8  surrounded by the one-dot-chain line) overlapping the display region AA of the liquid crystal display panel  11  in a plan view, and a non-display-overlapping region ONAA overlapping the non-display region NAA of the liquid crystal display panel  11 , and the non-display-overlapping region ONAA has a substantially frame shape surrounding the display-overlapping region OAA. The sealing member  32  is disposed on the inner edge of the non-display-overlapping region ONAA adjacent to the display-overlapping region OAA, and surrounds the display-overlapping region OAA. 
     As shown in  FIG. 3 , the parallax barrier panel  12  has almost the same display size as the liquid crystal display panel  11  and the parallax barrier panel  12  is attached to the liquid crystal display panel  11  through the adhesive material  28  so as to be aligned therewith. When in portrait mode, the longer side direction (Y axis direction) coincides with the vertical direction (up-and-down direction) as seen by the viewer, and the shorter side direction (X axis direction) coincides with the horizontal direction (left-and-right direction; direction in which the eyes LE and RE are aligned) as seen by the viewer, and when in landscape mode, the longer side direction matches the horizontal direction as seen by the viewer and the shorter side direction matches the vertical direction as seen by the viewer. Of the pair of substrates  12   a  and  12   b  constituting the parallax barrier panel  12 , as shown in  FIGS. 3 and 8 , the second substrate  12   b  towards the front (facing the liquid crystal display panel  11  and the adhesive material  28 ) is slightly smaller than the rear first substrate  12   a  in a plan view, and specifically, the shorter side dimensions (size in the X axis direction) and the longer side dimensions (size in the Y axis direction) are both relatively smaller. The front second substrate  12   b  is slightly smaller than the CF substrate  11   a  of the liquid crystal display panel  11  in a plan view. Therefore, the first substrate  12   a  has a projection  34  that projects further outward than the outer edge of the smaller second substrate  12   b . The projection  34  has a substantially frame shape that is vertically long so as to surround the second substrate  12   b  in a plan view. Also, the rear first substrate  12   a  is almost the same size in a plan view as the array substrate  11   b  of the liquid crystal display panel  11 . As shown in  FIG. 3 , the surface of the second substrate  12   b  facing the front (opposite to the side facing the liquid crystal layer  27 ), or in other words, the surface facing the liquid crystal display panel  11  is provided with an adhesive material  28 . The adhesive  28  disposed over a wider area in a plan view than at least the front second substrate  12   b , and the outer edge thereof is disposed to the inside than the outer edge of the first substrate  12   a . On the other hand, a polarizing plate  12   c  is attached to the outer surface of the first substrate  12   a  facing the rear (surface opposite to that facing the liquid crystal layer  27 ). 
     The parallax barrier panel  12  has a parallax barrier pattern  29  that splits by parallax the image displayed on the display surface of the liquid crystal display panel  11  to allow a three dimensional image to be seen by the viewer, and functions as a parallax barrier. In the parallax barrier panel  12 , a prescribed voltage is applied by the parallax barrier pattern  29  to the liquid crystal layer  27  so as to control the orientation of the liquid crystal molecules based on the voltage value and the light transmittance of the liquid crystal layer  27 , and can form a barrier portion BA, the details of which will be described later), and thus, the image displayed in the pixels PX of the liquid crystal display panel  11  are split by parallax, allowing the image to be seen by the viewer as a three dimensional image (see  FIG. 11 ). In other words, the parallax barrier panel  12  is a switching liquid crystal panel that can switch between displaying a two dimensional image and a three dimensional image in the display surface of the liquid crystal display panel  11  by actively controlling the light transmittance of the liquid crystal layer  27 . 
     As shown in  FIGS. 9 and 10 , the respective inner surfaces (facing the liquid crystal layer  27 ) of the pair of substrates  12   a  and  12   b  constituting the parallax barrier panel  12  respectively have transparent electrode portions  30  facing each other and constituting the parallax barrier pattern  29 . The transparent electrode portions  30  are made of an almost transparent transmissive conductive material such as ITO, like the pixel electrodes  17  of the liquid crystal display panel  11 , and have a display-overlapping region OAA in the parallax barrier panel  12 . As a result, in the display-overlapping region OAA of the parallax barrier panel  12 , the light transmittance is maintained at a high level, and it is possible for light to be transmitted therethrough with very little light loss. Pairs of the transmissive electrode portions  30  are provided respectively on the rear first substrate  12   a  and the front second substrate  12   b , and the transmissive electrode portions  30  provided on the first substrate  12   a  are the first transmissive electrode portion  30 A and the second transmissive electrode portion  30 B, whereas the transmissive electrode portions provided on the second substrate  12   b  are the third transmissive electrode portion  30 C and the fourth transmissive electrode portion  30 D. 
     As shown in  FIG. 9 , the first transmissive electrode portion  30 A and the second transmissive electrode portion  30 B respectively have a comb shape and interlock with each other in a plan view. Specifically, the first transmissive electrode portion  30 A and the second transmissive electrode portion  30 B respectively have a plurality of belt-shaped portions  30 Aa and  30 Ba that have a substantially uniform width and extend along the longer side direction (Y axis direction) of the first substrate  12   a  (to form a stripe pattern), and connecting portions  30 Ab and  30 Bb that respectively connect the edges of the belt-shaped portions  30 Aa and  30 Ba while extending along the shorter side direction (X axis direction). Therefore, in the display-overlapping region OAA of the first substrate  12   a , the belt-shaped portions  30 Aa and the first transmissive electrode portion  30 A and the belt-shaped portions  30 Ba and the second transmissive electrode portion  30 B are arranged alternately in the shorter side direction (X axis direction). 
     On the other hand, as shown in  FIG. 10 , the third transmissive electrode portion  30 C and the fourth transmissive electrode portion  30 D respectively have a comb shape and interlock with each other in a plan view. Specifically, the third transmissive electrode portion  30 C and the fourth transmissive electrode portion  30 D respectively have a plurality of belt-shaped portions  30 Ca and  30 Da having a belt-shape and a uniform width (to form stripes) while extending in the shorter side direction (X axis direction) of the second substrate  12   b  and being arranged in the longer side direction (Y axis direction) of the second substrate  12   b , the third transmissive electrode portion  30 C and the fourth transmissive electrode portion  30 D also respectively having connecting portions  30 Cb and  30 Db that connect edges of the respective belt-shaped portions  30 Ca and  30 Da and extending in the longer side direction (Y axis direction). Therefore, in the display-overlapping region OAA of the second substrate  12   b , the belt-shaped portions  30 Ca of the third transmissive electrode portion  30 C and the belt-shaped portions  30 Da of the fourth transmissive electrode portion  30 D are disposed alternately along the longer side direction (Y axis direction). As shown in  FIGS. 3 ,  9 , and  10 , with the substrates  12   a  and  12   b  being attached together, the respective belt-shaped portions  30 Ab and  30 Bb of the first transmissive electrode portion  30 A and the second transmissive electrode portion  30 B are disposed to face each other across the liquid crystal layer  27  while being perpendicular to the length direction thereof. Alignment films (not shown) for orienting the liquid crystal molecules including the liquid crystal layer  27  are formed on the inner surfaces of the substrates  12   a  and  12   b  while facing the liquid crystal layer  27 . 
     As shown in  FIG. 9 , one edge in the longer side direction of the first substrate  12   a  has a terminal portion (not shown) drawn from the first transmissive electrode portion  30 A and the second transmissive electrode portion  30 B, one end of the flexible substrate  33  for the barrier is connected to this terminal portion. The flexible substrate  33  for the barrier is press-connected to the terminal portion through the anisotropic conductive film ACF. Another end of this flexible substrate  33  for the barrier is connected to a control substrate that is not shown, and thus, it is possible to transmit a barrier driving signal from the control substrate to the first transmissive electrode portion  30 A and the second transmissive electrode portion  30 B. As shown in  FIG. 8 , the terminal portion and the flexible substrate  33  for the barrier are disposed in the non-display-overlapping region ONAA in the parallax barrier panel  12 . The third transmissive electrode portion  30 C and the fourth transmissive electrode portion  30 D provided on the second substrate  12   b  are electrically connected to the terminal portion on the first substrate  12   a  by conductive columnar portions (not shown) penetrating the liquid crystal layer  27  and connecting together the substrates  12   a  and  12   b , and the barrier driving signals can be sent from the terminal portion. 
     The parallax barrier panel  12  of the present embodiment has a maximum light transmittance in the liquid crystal layer  27  when the potential difference between the first transmissive electrode portion  30 A and second transmissive electrode portion  30 B, and the third transmissive electrode portion  30 C and fourth transmissive electrode portion  30 D is 0, for example, and can be used in a so-called normally white mode switching liquid crystal panel that can transmit the maximum amount of light over the entire region when the potential difference is 0. Furthermore, driving of the parallax barrier panel  12  of the present embodiment is controlled by applying a prescribed potential to the respective electrode portions  30 A to  30 D, and it is possible for the viewer to see a three dimensional image in both portrait and landscape modes. 
     Specifically, when the liquid crystal display device  10  is used in portrait mode, the second transmissive electrode portion  30 B, the third transmissive electrode portion  30 C, and the fourth transmissive electrode portion  30 D are fed a reference potential, but the first transmissive electrode portion  30 A is fed a prescribed potential different from the reference potential, for example. As a result, while no potential difference occurs between the second transmissive electrode portion  30 B, the third transmissive electrode portion  30 C, and the fourth transmissive electrode portion  30 D, a potential difference does occur between the first transmissive electrode portion  30 A, and the third transmissive electrode portion  30 C and fourth transmissive electrode portion  30 D. Thus, as shown in  FIG. 11 , of the liquid crystal layer  27  in the parallax barrier panel  12 , barrier portions BA having the smallest light transmittance to block light, for example, are formed in areas overlapping the first transmissive electrode portion  30 A in a plan view, whereas in areas overlapping the second transmissive electrode portion  30 B in a plan view, barrier openings BO having the maximum light transmittance so as to transmit light therethrough are formed in areas overlapping the second transmittance electrode portion  30 B in a plan view. A plurality of the barrier portions BA and a plurality of the barrier openings BO are in a stripe pattern along the Y axis direction in a manner similar to that of the respective belt-shaped portions  30 Ab and  30 Bb of the first transmissive electrode portion  30 A and the second transmissive electrode portion  30 B, and are aligned alternately in the X axis direction. The direction in which the barrier portions BA and the barrier openings BO are aligned match the direction of alignment of the eyes LE and RE (X axis direction) of the viewer when in portrait mode, and thus, if the respective pixels PX aligned in the X axis direction in the liquid crystal display panel  11  in this state are controlled to be driven such that a left eye image and a right eye image are alternately displayed, the right eye image (right eye pixels RPX) and the left eye image (left eye pixels LPX) have viewing angles respectively controlled by the barrier portions BA, and through the barrier openings BO, these images are respectively and separately seen by the right eye RE and the left eye LE of the viewers. As a result, binocular parallax is attained in portrait mode and the viewer can see a three dimensional image. 
     On the other hand, when the liquid crystal display device  10  is used in landscape mode, the first transmissive electrode portion  30 A, the second transmissive electrode portion  30 B, and the fourth transmissive electrode portion  30 D are fed the reference potential whereas the third transmissive electrode portion  30 C is fed a prescribed potential differing from the reference potential. As a result, no potential difference emerges between the first transmissive electrode portion  30 A, the second transmissive electrode portion  30 B, and the fourth transmissive electrode portion  30 D, but a potential difference does occur between the third transmissive electrode portion  30 C, and the first transmissive electrode portion  30 A and second transmissive electrode portion  30 B. Thus, as shown in  FIG. 11 , in the liquid crystal layer  27  of the parallax barrier panel  12 , areas overlapping the third transmissive electrode portion  30 C in a plan view have a minimum light transmittance, for example, and a barrier portion BA blocking light is formed here, whereas areas overlapping the fourth transmissive electrode portion  30 D have the maximum light transmittance, thus forming the barrier openings BO. A plurality of the barrier portions BA and a plurality of the barrier openings BO are formed in a stripe shape extending along the X axis direction in a manner similar to the respective belt-shaped portions  30 Ca and  30 Da of the third transmissive electrode portion  30 C and the fourth transmissive electrode portion  30 D, and extend alternately in the Y axis direction. The direction in which the barrier portions BA and the barrier openings BO are aligned match the direction of alignment of the eyes LE and RE (Y axis direction shown in parentheses in  FIG. 11 ) of the viewer when in landscape mode, and thus, if the respective pixels PX aligned in the Y axis direction in the liquid crystal display panel  11  in this state are controlled to be driven such that a left eye image and a right eye image are alternately displayed, the right eye image (right eye pixels RPX) and the left eye image (left eye pixels LPX) have viewing angles respectively controlled by the barrier portions BA, and through the barrier openings BO, these images are respectively and separately seen by the right eye RE and the left eye LE of the viewers. As a result, binocular parallax is attained in landscape mode and the viewer can see a three dimensional image. 
     In a liquid crystal display device  10  that can switch three dimensional display between portrait mode and landscape mode, it is preferable that a gyrosensor (not shown) be installed, that the orientation of the liquid crystal display device  10  (portrait or landscape) be detected by the gyrosensor, and that the driving of the liquid crystal display panel  11  and the parallax barrier panel  12  be automatically switched between portrait mode and landscape mode depending on this detected signal. Also, when displaying a two dimensional image to the viewer, then by feeding the reference potential to all transmissive electrode portions  30 A to  30 D, for example, no potential difference occurs between the first transmissive electrode portion  30 A, the second transmissive electrode portion  30 B, the third transmissive electrode portion  30 C, and the fourth transmissive electrode portion  30 D, and the transmittance in the entire liquid crystal layer  27  is set to the maximum. As a result, no barrier portions BA blocking light are formed in the parallax barrier panel  12 . Therefore, no parallax is formed in the image displayed in the pixels PX in the liquid crystal display panel  11 , and thus, the viewer sees a two dimensional image. Alternatively, a configuration may be adopted in which no potential is fed to any of the electrode portions  30 A to  30 D, thus forming no potential difference between the first transmissive electrode portion  30 A, the second transmissive electrode portion  30 B, the third transmissive electrode portion  30 C, and the fourth transmissive electrode portion  30 D. 
     The liquid crystal display device  10  of the present embodiment has the configuration described above, and a manufacturing method therefor will be described next in detail. The liquid crystal display device  10  is manufactured by the following steps: a step of manufacturing the liquid crystal panel  11  and the parallax barrier panel  12 ; a step of coating the liquid adhesive material  28  on the parallax barrier panel  12 , among the liquid crystal display panel  11  and the parallax barrier panel  12 ; attaching together the liquid crystal display panel  11  and the parallax barrier panel  12 ; a step of partial curing in which an overlapping portion  35  of the adhesive material  28  overlapping the outer edge portion of the parallax barrier panel  12 ; a step of adjusting a position of the liquid crystal display panel  11  and the parallax barrier panel  12  in the surface direction, a step of curing the entire adhesive material  28 ; and a step of attaching polarizing plates  11   c  and  12   c  on the respective outer surfaces of the liquid crystal display panel  11  and the parallax barrier panel  12 . Below, the respective steps will be explained in detail. 
     In the step of manufacturing the panels, the liquid crystal display panel  11  and the parallax barrier panel  12  are respectively manufactured in different manufacturing lines. After various components are sequentially layered on the respective substrates by the known photolithography method, the liquid crystal display panel  11  is manufactured by attaching together the substrates  11   a  and  11   b  with the liquid crystal layer  20  and the sealing member  31  interposed therebetween (see  FIGS. 4 to 7 ). In the step of manufacturing the liquid crystal display panel  11 , a polarizing plate  11   d  is attached to the rear outer surface of the array substrate  11   b , which is the rear substrate of the liquid crystal display panel  11 , but the front polarizing plate  11   c  is not attached. On the other hand, after sequentially layering the respective components on the substrates  12   a  and  12   b  by the known photolithography method, the parallax barrier panel  12  is manufactured by attaching together the respective substrates  12   a  and  12   b  with the liquid crystal layer  27  and the sealing member  32  interposed therebetween (see  FIGS. 8 to 10 ). In the step of manufacturing the parallax barrier panel  12 , the parallax barrier panel  12  is manufactured such that the first substrate  12   a  has a projection  34  by being formed slightly larger than the second substrate  12   b  in a plan view. In the step of manufacturing the parallax barrier panel  12 , a polarizing plate  12   c  is not attached to the parallax barrier panel  12 . In the step of manufacturing the panels, corresponding flexible substrates  21  and  33  and drivers DR are respectively connected (mounted) to the panels  11  and  12 . 
     As shown in  FIG. 12 , in the step of coating the adhesive material, the liquid adhesive material  28  is coated in portions of the front surface of the second substrate  12  of the parallax barrier panel  12 . Specifically, the adhesive material  28  is coated by ejecting it onto the second substrate  12   b  from a nozzle of a coating device (not shown) to form a stripe pattern extending in the longer side direction (Y axis direction) of the second substrate  12   b , a plurality of lines of the adhesive material  28  being coated to be aligned intermittently in the shorter side direction (X axis direction) of the second substrate  12   b . The adhesive material  28  is coated more on a central portion  12 CP than on an outer edge portion  12 EP (described later) of the parallax barrier panel  12  (see  FIG. 14 ). The amount of adhesive material  28  coated in the step of coating the adhesive material is adjusted such that when the liquid crystal display panel  11  and the parallax barrier panel  12  are attached together in the following attaching step, a large amount of the adhesive material  28  in the central portion of the opposing surfaces of the panels  11  and  12  spread but do not leak outside the edge of the panels  11  and  12 . The specific gap between the panels  11  and  12  (thickness of the adhesive material  28 ) is set to be approximately 50 μm, for example. The step of coating the adhesive material is performed in a lighting environment that does not have any ultraviolet radiation such that unwanted curing of the adhesive material  28  does not occur. 
     As shown in  FIG. 13 , the liquid crystal display panel  11  is disposed to the front of the parallax barrier panel  12  coated with the liquid adhesive material  28 , the two panels are roughly positioned with respect to each other in the X axis direction and the Y axis direction while causing the liquid crystal display panel  11  to approach the parallax barrier panel  12  in the Z axis direction, and the two panels are attached to each other at a prescribed pressure. As shown in  FIG. 14 , when the liquid crystal display panel  11  is attached to the parallax barrier panel  12 , the adhesive material  28  coated in a stripe pattern is spread by pressure from the liquid crystal display panel  11 , and thus, is spread evenly in a planar shape between the array substrate  11   b  (rear polarizing plate  11   d ) of the liquid crystal display panel  11  and the second substrate  12   b  of the parallax barrier panel  12 . At this time, depending on the amount of adhesive material  28  present and the amount of pressure applied to the adhesive material  28  from the liquid crystal display panel  11 , the adhesive material  28  spreads beyond the outer edge step of the second substrate  12   b  of the parallax barrier panel  12  and reaches the space between the projection  34  of the first substrate  12   a  and the array substrate  11   b  (see  FIG. 15 ). The space between the projection  34  of the first substrate  12   a  and the array substrate  11   b  is greater than the space between the second substrate  12   b  and the array substrate  11   b , and thus, it is possible to retain a sufficient amount of the adhesive material  28  that has spread beyond the step of the outer edge of the second substrate  12   b , and thus, the adhesive material  28  is less susceptible to leaking from the outer edges of the respective panels  11  and  12 . 
     The partial curing step is performed simultaneously to the attaching step described above. As shown in  FIG. 14 , the partial curing step is performed by radiating ultraviolet rays to cure the adhesive material  28  from a partial illumination device  36  disposed to face the outer edge portion  12 EP of the parallax barrier panel  12  while performing the attaching step. The outer edge portion  12 EP of the parallax barrier panel  12  as described here includes an outer end portion  12   b   1  of the second substrate  12   b , and an inner end portion  34   a  that surrounds the outer end portion  12   b  of the second substrate  12   b  of the projection  34  of the first substrate  12   a . The partial illumination device  36  has a substantially frame shape along the outer edge portion  12 EP of the parallax barrier panel  1 , and overlap the outer edge portion  12 EP of the parallax barrier panel  12  in a plan view. Specifically, the partial illumination device  36  is disposed in an area of the parallax barrier panel  12  from the outer end portion  12   b   1  of the second substrate  12   b  to the inner end portion  34   a  of the projection  34  of the first substrate  12   a . The partial illumination device  36  is designed such that the amount of ultraviolet rays radiated per unit area on the parallax barrier panel  12  (adhesive material  28 ) is substantially even throughout the partial illumination device  36 . In the attaching step described above, the liquid adhesive material  28  is pressed to spread towards the outer edge from the central areas of the panels  11  and  12 , and reaches areas overlapping the outer edge portion  12 EP in a plan view, but as shown in  FIG. 15 , the overlapping portion  35  of the adhesive material  28  overlapping the outer edge portion  12 EP in a plan view is irradiated with the ultraviolet rays from the partial illumination device  36 , and is thereby cured. By radiating ultraviolet rays from the partial illumination device  36  simultaneously to the start of the attaching step, for example, it is possible to more reliably cure the overlapping portion  35  of the adhesive material  28  that has reached areas overlapping the outer edge portion  12 EP after having spread as a result of the attaching step. 
     As shown in  FIGS. 15 and 16 , by curing the overlapping portion  35 , which is the outer edge portion of the adhesive material  28 , the frame-shaped cured overlapping portion  35  blocks in all areas the highly fluid portion (liquid portion) of the adhesive material  28  that has not yet been cured, located towards the center. As a result, even if the amount of adhesive material  28  is excessive due to individual differences in the coating device during the step of coating the adhesive material, or even if the pressure applied to the panels  11  and  12  by an attaching device (pressurizing device) during the attaching step is excessive, the portion of the adhesive material  28  that has not yet been cured is not susceptible to leaking outside from the outer edges of the panels  11  and  12 . Therefore, it is less likely for the outer appearance of the device to be ruined or for display quality to be diminished due to unwanted adhesive material  28  sticking to the outer surfaces of the liquid crystal display panel  11  and the parallax barrier panel  12 , for example. The timing when the partial illumination device  36  begins radiation of ultraviolet rays may be after a prescribed period of time has elapsed since the attaching step; this timing can be modified as appropriate as long as it is before the adhesive material  28  reaches an area overlapping the outer edge portion  12 EP. 
     As shown in  FIG. 15 , the ultraviolet rays emitted by the partial illumination device  36  are radiated on the adhesive material  28  after passing through either or both of the substrates  12   a  and  12   b  constituting the parallax barrier panel  12 . Of the overlapping portion  35 , the portion overlapping the outer end portion  12   b   1  of the second substrate  12   b  of the parallax barrier panel  12  in a plan view is an inner edge portion  35   a  located towards in the inside, and the portion overlapping the inner edge portion  34   a  of the projection  34  of the first substrate  12   a  of the parallax barrier panel  12  in a plan view is the outer edge portion  35   b  located towards the outside; whereas the inner edge portion  35   a  is irradiated with ultraviolet rays that have passed respectively through the substrates  12   a  and  12   b , the outer edge portion  35   b  is irradiated with ultraviolet rays that have passed only through the projection  34  of the first substrate  12   a . Thus, the amount of ultraviolet rays radiated on the inner edge portion  35   a  is relatively small due to some of the ultraviolet rays being absorbed or reflected by the two substrates  12   a  and  12   b , but the amount of ultraviolet rays radiated on the outer edge portion  35   b  is relatively large due to no absorption or reflection of the ultraviolet rays by the second substrate  12   b . Therefore, if the amount of time that ultraviolet rays are radiated on the inner edge portion  35   a  and the outer edge portion  35   b  is the same, then the degree of curing of the inner edge portion  35   a  is relatively small, whereas the degree of curing of the outer edge portion  35   b  is relatively large. The “degree of curing” here refers to how much curing has progressed in the high fluidity liquid adhesive material  28  due to ultraviolet irradiation, and more specifically refers to the degree of decrease in fluidity and degree of increase in viscosity. As a result, the adhesive material  28  has a stepwise increase in degree of curing (increase in viscosity, decrease in fluidity) in the order of the central non-cured portion (liquid portion), the inner edge portion  35   a  of the overlapping portion  35 , and the outer edge portion  35   b . Thus, stress resulting from contraction due to curing in the boundary between the non-cured central portion and the overlapping portion  35  is mitigated, and therefore, the adhesive material  28  is not susceptible to residual stress. If residual stress occurs in the adhesive material  28 , residual stress acts on the liquid crystal display panel  11  to be attached, which can negatively affect display, and thus, by mitigating the occurrence of such residual stress, it is possible to maintain a high display quality of images displayed in the liquid crystal display panel  11 . In the partial curing step, the overlapping portion  35  is not completely cured, and is in a semi-cured gel state. Specifically, it is preferable that the curing rate of the overlapping portion  35  be 70% or greater, and specifically, it is possible to set the curing rate of the outer edge portion  35   b  to be 50% to 70%, for example, and the curing rate of the inner edge portion  35   a  to be 30% to 50%, for example. Here, the “curing rate” is a ratio of a value measuring a physical property such as viscosity or degree of curing in the adhesive material  28  in relation to a value measuring a physical property such as viscosity or degree of curing of the adhesive material  28  that has been irradiated with ultraviolet rays but has not been cured beyond a certain extent. As a result of the overlapping portion  35  of the adhesive material  28  being in a semi-cured gel state, most of the fluidity thereof is gone, and the overlapping portion  35  does not flow along the surfaces of the respective substrates  11   b ,  12   a , and  12   b  in contact therewith, but the overlapping portion  35  can elastically deform. 
     By going through the attaching step and the partial curing step as described above, the panels  11  and  12  attached with a prescribed gap therebetween can be positioned in the position adjusting step that follows. As shown in  FIG. 17 , the position adjusting step is performed by changing the position of the liquid crystal display panel  11  with respect to the parallax barrier panel  12 , for example, along the surface direction, that is, the X axis direction and the Y axis direction. As already described, in the adhesive material  28 , the overlapping portion  35  has already been partially cured, but can still elastically deform, and thus, adjusting of the position is allowed by the overlapping portion  35  elastically deforming as the liquid crystal display panel  11  moves relative to the parallax barrier panel  12 . By performing this position adjusting step, the panels  11  and  12  can be positioned in the surface direction at a high accuracy, and thus, images displayed in the liquid crystal display panel  11  can be more reliably perceived by the viewer as a three dimensional image by the parallax barrier panel  12 . 
     As shown in  FIG. 18 , in the total curing step, a total illumination device  37  disposed to face the rear of the first substrate  12   a  of the parallax barrier panel  12  radiates ultraviolet rays to the adhesive material  28 . This total illumination device  37  has a substantially plate shape slightly larger than the second substrate  12   b  of the parallax barrier panel  12  in a plan view, but slightly smaller than the first substrate  12   a , and is disposed to overlap the entire second substrate  12   b  and adhesive material  28  (including the overlapping portion  35 ). The total illumination device  37  is designed such that the amount of ultraviolet rays radiated per unit area on the parallax barrier panel  12  (adhesive material  28 ) is substantially even throughout the total illumination device  37 . If ultraviolet rays are radiated from the total illumination device  37  to the adhesive material  28  through the parallax barrier panel  12 , the adhesive material  28  is cured, both in the semi-cured overlapping portion  35  and the non-cured portion towards the center. When ultraviolet rays are radiated from the total illumination device  37  until the curing rate is 100% in the entire adhesive material  28 , the panels  11  and  12  are completely attached to each other by the adhesive material  28 . Then, in the step of attaching polarizing plates, polarizing plates  11   c  and  12   c  are respectively attached onto the panels  11  and  12 , and thus, the manufacturing of the liquid crystal display device  10  shown in  FIG. 3  is completed. 
     As described above, the method of manufacturing the liquid crystal display device  10  (display device) of the present embodiment includes: a step of coating the liquid adhesive material  28  on the opposing surface of at least one of the liquid crystal display panel  11  (display panel) that displays images and the parallax barrier panel  12  (function panel) to be stacked onto the liquid crystal display panel  11 ; a step of attaching the liquid crystal display panel  11  to the parallax barrier panel  12  through the adhesive material  28 ; and a step of partial curing in which the overlapping portion  35  of the adhesive material  28  overlapping in a plan view the outer edge portion  12 EP of at least one of the liquid crystal display panel  11  and the parallax barrier panel  12  is cured. 
     In this manner, in the step of coating the adhesive material, the liquid adhesive material  28  is coated on the opposing surface of at least one of the liquid crystal display panel  11  and the parallax barrier panel  12 , and in the subsequent attaching step, the liquid crystal display panel  11  and the parallax barrier panel  12  are attached through the adhesive material  28 . The method of manufacturing the liquid crystal display device  10  includes the step of partial curing, and the adhesive material  28  is partially cured by curing the overlapping portion  35  of the adhesive material  28  overlapping in a plan view the outer edge portion  12 EP of at least one of the liquid crystal display panel  11  and the parallax barrier panel  12 , and thus, the non-cured adhesive material  28  in the center can be blocked by the cured overlapping portion  35 . As a result, even if there is variation in the amount of adhesive material  28  coated in the step of coating the adhesive material, or there is variation in pressure applied to the liquid crystal display panel  11  and the parallax barrier panel  12  in the attaching step, the adhesive material  28  is not susceptible to leaking outside from at least one of the outer edges of the liquid crystal display panel  11  and the parallax barrier panel  12 . Thus, a situation in which unwanted adhesive material  28  sticks to the outer surface of the liquid crystal display panel  11  or the parallax barrier panel  12 , for example, is prevented, thus maintaining high display quality. 
     Also, in the step of partial curing, the degree of curing of the outer edge portion  35   b  of the overlapping portion  35  located towards the outside is relatively high, whereas the degree of curing of the inner edge portion  35   a  of the overlapping portion  35  located towards the inside is relatively low. In this manner, when performing partial curing, the degree of curing becomes higher in the order of the non-cured portion towards the center of the adhesive material  28 , the inner edge portion  35   a  of the overlapping portion  35 , and the outer edge portion  35   b  of the overlapping portion  35 , and thus, the degree of curing can be changed in a stepwise fashion. As a result, stress that can result from contraction due to curing at the boundary between the overlapping portion  35  and the non-cured portion towards the center can be eased, and thus, a situation in which residual stress in the adhesive material  28  acts on the liquid crystal display panel  11  to reduce display quality, for example, can be made more difficult. 
     Also, in the step of coating the adhesive material, a photocurable adhesive material  28  is coated as the adhesive material  28 , and in the partial curing step, light to induce curing is radiated on the overlapping portion  35  of the photocurable adhesive material  28 . By doing so, in the step of partial curing, light to cure the overlapping portion  35  of the photocurable adhesive material  28  is radiated, thereby partially curing the photocurable adhesive material  28 , and thus, the range within which the photocurable adhesive material  28  is cured can be set at a high degree of accuracy, and partial curing of the photocurable adhesive material  28  can be done more reliably. Also, compared to thermosetting adhesive materials, for example, the photocurable adhesive material  28  is more quickly cured, and thus, the cycle time can be reduced. 
     Also, in the step of coating the adhesive material, an ultraviolet curable adhesive material  28  is coated as the photocurable adhesive material  28 , and in the step of partial curing, ultraviolet rays are radiated to cure the overlapping portion  35  of the ultraviolet curable adhesive material  28 . In this manner, compared to a case in which a visible light curable adhesive material is used as the photocurable adhesive material, it is relatively easier to take measures to prevent unwanted curing between when the step of coating the adhesive material is performed and the attaching step is performed, and thus, equipment costs and the like can be reduced. Also, the ultraviolet curable adhesive material  28  is more quickly cured, and thus, the cycle time can be even further reduced. 
     Also, in the step of partial curing, ultraviolet rays are radiated on the overlapping portion  35  through the parallax barrier panel  12 . In this manner, compared to a case in which the overlapping portion  35  is irradiated with ultraviolet rays through the liquid crystal display panel, a problem is mitigated in which structures provided in the liquid crystal display panel  11  would be denatured by the ultraviolet rays. As a result, the image displayed on the liquid crystal display panel  11  can have excellent display quality. 
     The manufacturing method includes a panel manufacturing step, which is a step of manufacturing at least one of the liquid crystal display panel  11  and the parallax barrier panel  12  formed by attaching together a pair of transmissive substrates  12   a  and  12   b , where the first substrate  12   a , which is one of the pair of substrates  12   a  and  12   b , has a projection  34  that projects further outward than the second substrate  12   b , which is the other substrate. In the partial curing step, the outer edge portion  35   b  of the overlapping portion  35  towards the outside is irradiated with light through the projection  34  of the first substrate  12   a , which is one of the substrates, and the inner edge portion  35   a  towards the inside is irradiated with light through the pair of substrates  12   a  and  12   b . In this manner, when performing the partial curing step, the outer edge portion  35   b  is irradiated with light only through the projection  34  of the first substrate  12   a , which is one of the substrates, and thus, the amount of light radiated on the outer edge portion  35   b  is relatively high, and therefore, the degree of curing of the outer edge portion  35   b  is also high, whereas the inner edge portion  35   a  is irradiated with light through both of the pair of substrates  12   a  and  12   b , and thus, light is absorbed or reflected by the second substrate  12   b , which is the other substrate, and thus, the amount of light radiated on the inner edge portion  35   a  is relatively low, and therefore the degree of curing is also low. As a result, the degree of curing becomes higher in order of the non-cured portion of the adhesive material  28  towards the center, the inner edge portion  35   a  of the overlapping portion  35 , and the outer edge portion  35   b  of the overlapping portion  35 , and thus, the degree of curing changes in a stepwise fashion. Therefore, the stress that can occur due to contraction from curing in the boundary portion between the non-cured portion in the center and the overlapping portion  35  is mitigated. Therefore, a situation in which residual stress in the adhesive material  28  acts on the liquid crystal display panel  11  to negatively affect display quality, for example, is made unlikely. Furthermore, in the step of partial curing, the amount of light radiated on in the overlapping portion  35  is made different in different portions due to the steps formed between the pair of substrates  12   a  and  12   b , which allows a reduction in cost of the device for radiating light. 
     In the attaching step, the liquid crystal display panel  11  and the parallax barrier panel  12  are attached together such that the second substrate  12   b , which is the other substrate among the pair of substrates  12   a  and  12   b , is positioned facing the adhesive material  28 . In this manner, the gap between the liquid crystal display panel  11  and the parallax barrier panel  12  is greater in the area where the projection  34  of the first substrate  12   a , which is one of the substrates, is disposed, than in the area where the second substrate  12   b , which is the other substrate, is disposed. As a result, the gap where the adhesive material  28  is wider where the inner edge portion  35   a  of the overlapping portion  35  is disposed than where the outer edge portion  35   b  is disposed, and thus, leakage of the adhesive material  28  is further mitigated. 
     The partial curing step is performed simultaneously to the attaching step. In this manner, compared to a case in which the partial curing step is performed separately from the attaching step, the amount of time taken in manufacturing can be reduced. 
     Also, in the step of coating the adhesive material, the adhesive material  28  is coated on portions of at least one of the opposing surfaces of the liquid crystal display panel  11  and the parallax barrier panel  12 , and in the attaching step, by applying pressure on at least one of the liquid crystal display panel  11  and the parallax barrier panel  12 , the adhesive material  28  is spread under pressure. In this manner, in the attaching step, by applying pressure on at least one of the liquid crystal display panel  11  and the parallax barrier panel  12 , the liquid adhesive material  28  is spread under pressure, and by performing curing on the overlapping portion  35  of the adhesive material  28  spread in this manner, it is possible to block leakage of the non-cured portion in the center to outside of the overlapping portion  35 . In this manner, compared to a case in which the adhesive material  28  is coated in a planar form on the opposing surface, the coating efficiency for the adhesive material  28  is better, and is suitable for reducing cycle time or the like. 
     Also, in the step of coating the adhesive material, the adhesive material  28  is coated in the central portion  12 CP surrounded by the outer edge portion  12 EP of at least one of the liquid crystal display panel  11  and the parallax barrier panel  12 , and in the partial curing step, the adhesive material  28  spread during the attaching step is partially cured before the adhesive material  28  reaches the outer edge portion  12 EP of the liquid crystal display panel  11  and the parallax barrier panel  12 . In this manner, the overlapping portion  35  of the adhesive material  28  that has reached the outer edge portion  12 EP of the liquid crystal display panel  11  and the parallax barrier panel  12  after spreading in the attaching step can be more reliably cured. As a result, it is possible to more reliably prevent leaking of the non-cured portion of the adhesive material  28 . 
     Also, in the partial curing step, the overlapping portion  35  is partially cured. In this manner, even if air bubbles form in the non-cured portion of the adhesive material  28  during attaching, the overlapping portion  35  is partially cured, and thus, the air bubbles in the non-cured portion can be force out through the overlapping portion  35 . As a result, air bubbles are less likely to remain in the adhesive material  28 , and thus, the display quality of images displayed in the liquid crystal display panel  11  can be maintained at a high level. 
     Also, after performing the attaching step and the partial curing step, a position adjusting step of adjusting the position of the liquid crystal display panel  11  and the parallax barrier panel  12  along the surface direction is performed. In this manner, because the overlapping portion  35  is partially cured in the partial curing step, it is possible to position the liquid crystal display panel  11  and the parallax barrier panel  12  along the surface direction in the position adjusting step thereafter. As a result, the positioning accuracy of the liquid crystal display panel  11  and the parallax barrier panel  12  can be made high. 
     Also, in the attaching step, the parallax barrier panel  12  is attached to the liquid crystal display panel  11  as a function panel that can split by parallax images displayed in the liquid crystal display panel  11 . In this manner, in the position adjusting step, the positioning accuracy in the surface direction of the liquid crystal display panel  11  and the parallax barrier panel  12  is high, and thus, the function of the parallax barrier panel  12  can more exhibited more suitably, and an excellent three dimensional image can be viewed by a user of the liquid crystal display device  10 . 
     Also, in the partial curing step, curing is performed on the overlapping portion  35  of the adhesive material  28  overlapping the non-display region NAA surrounding the display region AA where images are displayed in the liquid crystal display panel  11 . In this manner, even if uneven curing occurs in the overlapping portion  35  of the adhesive material  28  as a result of the partial curing step, the overlapping portion  35  overlaps in a plan view the non-display region NAA in the liquid crystal display panel  11 , and thus, deterioration in display quality of images displayed in the display region AA resulting from the overlapping portion  35  is prevented. 
     Embodiment 2 
     Embodiment 2 of the present invention will be described with reference to  FIGS. 19 to 23 . In Embodiment 2, the function panel is a touch panel  38 . Descriptions of structures, operations, and effects similar to those of Embodiment 1 will be omitted. 
     As shown in  FIG. 19 , instead of the parallax barrier panel  12  in Embodiment 1, a touch panel  38  having a touch panel function to detect a position inputted by the viewer is attached through an adhesive material  128  onto a liquid crystal display panel  111  of the present embodiment. The touch panel  38  layered onto the front of the liquid crystal display panel  111 . The touch panel  38  has one mostly transparent glass substrate  38   a , and the front outer surface of the substrate  38   a , as shown in  FIG. 20 , has formed thereon transmissive electrode portions  40  for the touch panel constituting a touch panel pattern  39  of a so-called projected capacitive type. The transmissive electrode portions  40  for the touch panel are made of a mostly transparent transmissive conductive material such as ITO, similar to the transmissive electrode portion  30  (transmissive electrode portion for parallax barrier) included in the parallax barrier pattern  29  of Embodiment 1, and the transmissive electrode portions  40  are disposed in a display-overlapping region OAA of the touch panel  38  overlapping the display region AA of the liquid crystal display panel  111 . As a result, in the display-overlapping region OAA of the touch panel  38 , a high light transmittance is maintained, and it is possible to reduce loss of light passing through the display region AA of the liquid crystal display panel  111 . The transmissive electrode portions  40  for the touch panel include a plurality of rows of first transmissive electrode portions  40 A for the touch panel extending in the longer side direction (Y axis direction) of the substrate  38   a , and a plurality of rows of second transmissive electrode portions  40 B for the touch panel extending in the shorter side direction (X axis direction) of the substrate  38   a.    
     As shown in  FIG. 20 , the first transmissive electrode portions  40 A for the touch panel have a plurality of first electrode pads  40 Aa having a diamond shape in a plan view and aligned along the Y axis direction, and adjacent first electrode pads  40 Aa are connected to each other. A plurality of the first transmissive electrode portions  40 A for the touch panel extending along the Y axis direction are arranged in parallel in the X axis direction at a prescribed gap therebetween. By contrast, the second transmissive electrode portions  40 B for the touch panel have a plurality of second electrode pads  40 Ba having a diamond shape in a plan view and arranged along the X axis direction, and adjacent second electrode pads  40 Ba are connected to each other. A plurality of the second transmissive electrode portions  40 B for the touch panel extending along the Y axis direction are arranged in parallel in the Y axis direction at a prescribed gap therebetween. Therefore, the substrate  38   a  has arranged in a matrix thereon a plurality of first electrode pads  40 Aa constituting the first transmissive electrode portions  40 A for the touch panel and a plurality of second electrode pads  40 Ba constituting the second transmissive electrode portion  40 B for the touch panel, respectively in the X axis direction and the Y axis direction. The first electrode pads  40 Aa and the second electrode pads  40 Ba are arranged in the same layer on the substrate  38   a , whereas connecting portions between adjacent first electrode pads  40 Aa and connecting portions between adjacent second electrode pads  40 Ba are kept insulated from each other by an insulating layer (not shown) therebetween. 
     As shown in  FIG. 20 , one end of the substrate  38   a  in the longer side direction has formed thereon a terminal portion (not shown) drawn from the first transmissive electrode portion  40 A for the touch panel and the second transmissive electrode portion  40 B for the touch panel, and one end of the flexible substrate  41  for the touch panel is connected to this terminal portion. The flexible substrate  41  for the touch panel is connected by pressure to the terminal portion through the anisotropic conductive film ACF. Another end of the flexible substrate  41  for the touch panel is connected to a detection circuit, which is not shown. The terminal portion and the flexible substrate  41  for the touch panel are disposed in the non-display-overlapping region ONAA overlapping the non-display region NAA of the liquid crystal display panel  111  of the touch panel  38 . When a finger of a user, which is a conductor, touches or approaches the operating surface of the touch panel  38  in a state in which voltage is sequentially applied to the plurality of rows of first transmissive electrode portions  40 A for the touch panel and the plurality of rows of second transmissive electrode portions  40 B for the touch panel, then a capacitance is formed between the finger of the user and any of the transmissive electrode portions  40 A and  40 B for the touch panel, and thus, the capacitance value in the corresponding transmissive electrode portions  40 A and  40 B for the touch panel differs from the capacitance value of other transmissive electrode portions  40 A and  40 B for the touch panel. A detection circuit detects differences in capacitance occurring in the transmissive electrode portions  40 A and  40 B for the touch panel, and the coordinates of the intersection of the corresponding transmissive electrode portions  40 A and  40 B for the touch panel are input as two dimensional (X axis direction and Y axis direction) position information of the operating position by the user. Therefore, in the touch panel  38 , multi-touch operation in which a plurality of locations on the operating surface are simultaneously touched by the user is possible. 
     The method of manufacturing the liquid crystal display device  110  obtained by attaching the touch panel  38  of the above configuration to the liquid crystal display panel  111  will be described. First, steps of manufacturing panels are performed to respectively manufacture the panels  38  and  111 . Of these, in the method of manufacturing the liquid crystal display panel  111 , the liquid crystal display panel  111  is manufactured so as to have a projection  134  due to the array substrate  111   b  in the rear being formed to be slightly larger in a plan view than the CF substrate  111   a  in the front. At this stage, the liquid crystal display panel  111  has a front polarizing plate  111   c  attached thereto, whereas the rear polarizing plate  111   d  is not yet attached. Next, as shown in  FIG. 21 , by performing a step of coating an adhesive material, a liquid adhesive material  128  is coated on portions of the CF substrate  111   a  (front polarizing plate  111   c ) of the liquid crystal display panel  111 . 
     Next, the attaching step and the partial curing step are simultaneously performed. As shown in  FIG. 22 , when the touch panel  38  is pressed onto the liquid crystal display panel  111  at a prescribed pressure and attached thereto, the liquid adhesive material  128  is spread under pressure. At this time, depending on the amount of adhesive material  128  coated or the pressure applied on the adhesive material  128  by the touch panel  38 , the adhesive material  128  moves beyond the step formed at the outer edge of the CF substrate  111   a  in the liquid crystal display panel  111 , and into the space formed between the projection  134  of the array substrate  111   b  and the substrate  38   a  of the touch panel  38 . As the adhesive material  128  flows as described above, ultraviolet rays for curing the adhesive material  128  are radiated from partial illumination devices  136  disposed to face the rear of the outer edge portion  111 EP of the liquid crystal display panel  111 . The outer edge portion  111 EP of the liquid crystal display panel  111  is defined as including an outer end portion  111   a   1  of the CF substrate  111   a , and an inner end portion  134   a  of the projection  134  of the array substrate  111   b  surrounding the outer end portion  111   a   1  of the CF substrate  111   a . This partial illumination device  136  has a frame shape along the outer edge portion  111 EP of the liquid crystal display panel  111 . 
     By radiating ultraviolet rays from the partial illumination device  136  to the overlapping portion  135  of the adhesive material  128  overlapping in a plan view the outer edge portion  111 EP of the liquid crystal display panel  111 , curing of the overlapping portion  135  progresses. At this time, the inner edge portion  135   a , which is a portion of the overlapping portion  135  towards the inside, receives less ultraviolet rays due to the ultraviolet rays passing through the pair of substrates  111   a  and  111   b , whereas the outer edge portion  135   b , which is the portion of the overlapping portion  135  towards the outside, receives more ultraviolet rays due to the ultraviolet rays passing only through the projection  134  of the array  111   b . Therefore, the degree of curing of the adhesive material  128  increases (high viscosity; lower fluidity) in a stepwise fashion in the order of the central non-cured portion (liquid portion), the inner edge portion  135   a  of the overlapping portion  135 , and the outer edge portion  135   b , and thus, the stress that could occur in the boundary between the non-cured central portion and the overlapping portion  135  due to contraction from curing is mitigated, and residual stress is unlikely to occur in the adhesive material  128 . After the attaching step and the partial curing step are performed as described above, the position adjusting step is performed, and the total curing step is performed thereafter. As shown in  FIG. 23 , in the total curing step, ultraviolet rays are radiated on the entire adhesive material  128  from the total illumination device  137 , and thus, the entirety of the adhesive material  128  is completely cured. Then, the polarizing plate attaching step is performed to attach the polarizing plate  111   d  to the rear of the liquid crystal display panel  111  to complete the manufacturing of the liquid crystal display device  110 . 
     As described above, in the present embodiment, during the attaching step, the touch panel  38 , which can detect an input position by a user on the liquid crystal display device  110 , is attached as the function panel to the liquid crystal display panel  111 . In this manner, during the attaching step, the liquid crystal display panel  111  and the touch panel  38  are positioned with respect to each other in the surface direction and the positioning accuracy thereof is heightened, and therefore, it is possible for the touch panel  38  to more appropriately exhibit its function, and therefore, it is possible to detect with higher accuracy the position inputted by the user on the liquid crystal display device  110 . 
     Embodiment 3 
     Embodiment 3 of the present invention will be described with reference to  FIG. 24 . In Embodiment 3, the function panel is a protective panel  42 . Descriptions of structures, operations, and effects similar to those of Embodiment 2 will be omitted. 
     As shown in  FIG. 24 , a protective panel  42  for protecting the liquid crystal display panel  211  is attached instead of the touch panel  38  of Embodiment 2 to a liquid crystal display panel  211  of the present embodiment through an adhesive material  228 . The protective panel  42  layered onto the front of the liquid crystal display panel  211 . The protective panel  42  is made of tempered glass, which is almost transparent and has high shock resistance, for example. The method of manufacturing the liquid crystal display device  210  by attaching the protective panel  42  to the liquid crystal display panel  211  is similar to that of Embodiment 2, and thus, detailed descriptions thereof are omitted. 
     Embodiment 4 
     Embodiment 4 of the present invention will be described with reference to  FIG. 25 . In Embodiment 4, a parallax barrier panel  312  including a touch panel function is used as the function panel. Descriptions of structures, operations, and effects similar to those of Embodiments 1 and 2 will be omitted. 
     As shown in  FIG. 25 , instead of the touch panel  38  of Embodiment 2, the liquid crystal display panel  311  of the present embodiment has attached thereto a multi-function parallax barrier panel  312 , having a parallax barrier function and a touch panel function, through an adhesive material  328 . The parallax barrier panel  312  has a parallax barrier pattern (not shown) similar to that in Embodiment 1, and is layered onto the front of the liquid crystal display panel  311 . The outer surface of the second substrate  312   b  (opposite to the side facing the liquid crystal layer  327 ), which is the front substrate of the parallax barrier panel  312 , has formed thereon a touch panel pattern (not shown) similar to that of Embodiment 2, and is connected to a flexible substrate  341  for the touch panel. As a result, the parallax barrier panel  312  of the present embodiment has a parallax barrier function allowing a viewer to perceive a three dimensional image by splitting by parallax the image displayed on the liquid crystal display panel  311 , and a touch panel function (position detection function) for detecting an input position by the viewer. 
     The method of manufacturing the liquid crystal display device  310  by attaching the parallax barrier panel  312  to the liquid crystal display panel  311  is similar to that of Embodiment 2, and thus, detailed descriptions thereof are omitted. 
     Embodiment 5 
     Embodiment 5 of the present invention will be described with reference to  FIG. 26 . In Embodiment 5, a parallax barrier panel  412  and a protective panel  442  are used as function panels. Descriptions of structures, operations, and effects similar to those of Embodiments 1 and 3 will be omitted. 
     As shown in  FIG. 26 , the parallax barrier panel  412  is attached through an adhesive material  428  to the rear of the liquid crystal display panel  411  of the present embodiment, and the protective panel  442  is attached through an adhesive material  428  to the front of the liquid crystal display panel  411 . The method and structure of attaching the parallax barrier panel  412  and the liquid crystal display panel  411  of the present embodiment is similar to Embodiment 1. The method and structure of attaching the protective panel  442  and the liquid crystal display panel  411  of the present embodiment is similar to Embodiment 3. Whether the parallax barrier panel  412  or the protective panel  442  is attached first onto the liquid crystal display panel  411  can be selected as appropriate. 
     Embodiment 6 
     Embodiment 6 of the present invention will be described with reference to  FIG. 27 . In Embodiment 6, the arrangement of a liquid crystal display panel  511  and a parallax barrier panel  512  is modified, and the partial illumination device  536  used in the partial curing step is modified. Descriptions of structures, operations, and effects similar to those of Embodiment 1 will be omitted. 
     As shown in  FIG. 27 , the liquid crystal display panel  511  of the present embodiment is layered on the rear of the parallax barrier panel  512 . An adhesive material  528  is disposed between the CF substrate  511   a  of the liquid crystal display panel  511  and the first substrate  512   a  of the parallax barrier panel  512 . Meanwhile, in the partial curing step, the partial illumination device  536  is disposed to the front of the parallax barrier panel  512 , and the adhesive material  528  is irradiated with ultraviolet rays through either or both of substrates  512   a  and  512   b  constituting the parallax barrier panel  512 . Even with such a configuration, operations and effects similar to those of Embodiment 1 can be attained. 
     Embodiment 7 
     Embodiment 7 of the present invention will be described with reference to  FIG. 28 . In Embodiment 7, during the partial curing step, a total illumination device  637  is used. Descriptions of structures, operations, and effects similar to those of Embodiment 1 will be omitted. 
     As shown in  FIG. 28 , in the partial curing step of the present embodiment, partial curing is performed using the total illumination device  637  used in the total curing step to be performed later. Specifically, in the partial curing step, a light-shielding mask  43  blocking at least ultraviolet rays is interposed between the parallax barrier panel  612  and the total illumination device  637 . This light-shielding mask  43  has a plate shape over a range overlapping in a plan view a central portion  612 CP of the parallax barrier panel  612  farther to the center than an outer edge portion  612 EP. Therefore, of the ultraviolet rays emitted by the total illumination device  637 , those traveling towards the central portion  612 CP of the parallax barrier panel  612  are blocked by the light-shielding mask  43 , and those traveling towards the outer edge portion  612 EP are radiated on an overlapping portion  635  of the adhesive material  628  through the outer edge portion  612 EP without being blocked by the light-shielding mask  43 . In this manner, the total illumination device  637  can be used both during the partial curing step and the total curing step, which eliminates the need for the partial illumination device, thereby reducing equipment costs. 
     Embodiment 8 
     Embodiment 8 of the present invention will be described with reference to  FIG. 29 . In Embodiment 8, the size of a second substrate  712   b  of the parallax barrier panel  712  is modified, and the partial illumination device  736  used in the partial curing step is modified. Descriptions of structures, operations, and effects similar to those of Embodiment 1 will be omitted. 
     As shown in  FIG. 29 , the second substrate  712   b  of the parallax barrier panel  712  of the present embodiment has a shorter long side dimension than a first substrate  712   a  to the rear, and the first substrate  712   a  is attached to the second substrate  712   b  such that three sides (pair of longer side edges and one shorter side edge on the left side in  FIG. 29 ) thereof match, the side not matching being the edge having thereon a flexible substrate  733  for the barrier (right side in  FIG. 29 ). Therefore, a projection  734  of the first substrate  712   a  protrudes outward from the second substrate  712   b  only on the shorter side having thereon the flexible substrate  733  for the barrier. The outer edge portion  712 EP of the parallax barrier panel  712  includes an outer end portion  712   b   1  of the second substrate  712   b , and a portion  712   a   1  of the first substrate  712   a  overlapping in a plan view the outer end portion  712   b   1  of the second substrate  712   b . Therefore, the overlapping portion  735  of the adhesive material  728  is disposed in the entirety of the space between the second substrate  712   b  and the array substrate  711   b  of the liquid crystal display panel  711 . 
     In the partial curing step performed simultaneously to the step of attaching the parallax barrier panel  712  having this structure to the liquid crystal display panel  711 , a partial illumination device  736  emitting different amounts of ultraviolet rays depending on the region is used. The partial illumination device  736  emits a small amount of ultraviolet rays in portions overlapping in a plan view the inner edge portion  735   a  of the overlapping portion  735  of the adhesive material  728 , whereas it emits a larger amount of ultraviolet rays in portions overlapping in a plan view the outer edge portion  735   b . In  FIG. 29 , the number of arrows above the partial illumination device  736  indicates the amount of ultraviolet rays emitted. In this manner, the degree of curing between the inner edge portion  735   a  and the outer edge portion  735   b  of the overlapping portion  735  can be changed in a stepwise fashion without using a step in the parallax barrier panel  712 . 
     Embodiment 9 
     Embodiment 9 of the present invention will be described with reference to  FIGS. 30 to 34 . In Embodiment 9, a manufacturing method in which the partial curing step is performed before the attaching step will be described. Descriptions of structures, operations, and effects similar to those of Embodiment 1 will be omitted. 
     In the present embodiment, as shown in  FIG. 30 , in the step of coating the adhesive material, an adhesive material  828  is coated in a plane on a second substrate  812   b  of the parallax barrier panel  812 . In  FIG. 30 , the adhesive material  828  is coated in a halftone screening form. At this time, the adhesive material  828  is coated in a plane on the majority of the central portion but not in the outer edge portion of the second substrate  812   b . Next, partial curing is performed on the parallax barrier panel  812  coated with the planar adhesive material  828 . As shown in  FIG. 31 , in the partial curing step, ultraviolet rays are radiated from the partial illumination device  836  disposed opposite to the outer edge portion  812 EP of the second substrate  812   b  of the parallax barrier panel  812 , and ultraviolet rays are radiated on the overlapping portion  835  of the adhesive material  828  through both substrates  812   a  and  812   b  of the parallax barrier panel  812 . As a result, as shown in  FIG. 32 , the frame-shaped overlapping portion  835  on the outer edge of the adhesive material  828  is partially cured. Then, attaching is performed, and as shown in  FIG. 33 , the liquid crystal display panel  811  is attached to the front of the parallax barrier panel  812  through the adhesive material  828 . Even if the non-cured central portion of the adhesive material  828  spreads during the attaching step, the frame-shaped outer edge portion of the overlapping portion  835  has already been cured, and thus, leakage of the non-cured portion can be prevented. After attaching the two panels  811  and  812  and then adjusting the position thereof, as shown in  FIG. 34 , the total curing step is performed, thereby curing the entire adhesive material  828  by the total illumination device  837 , thus allowing the two panels  811  and  812  to be fixed together by being attached to each other. 
     OTHER EMBODIMENTS 
     The present invention is not limited to the embodiments shown in the drawings and described above, and the following embodiments are also included in the technical scope of the present invention, for example. 
     (1) In the respective embodiments, in the partial curing step, the ultraviolet rays were radiated by the partial illumination device prior to the adhesive material reaching areas overlapping the outer edge portion, but radiation of the ultraviolet rays by the partial illumination device can be done after the adhesive material reaches a position overlapping the outer edge portion. 
     (2) Besides what was described in the respective embodiments, the specific degree to which the overlapping portion of the adhesive material is cured can be appropriately modified in the partial curing step. 
     (3) In Embodiments 1 to 8, in the partial curing step, a case was described in which the degree to which the overlapping portion of the adhesive material is cured is varied in a stepwise fashion between the inner edge portion and the outer edge portion, but the degree of curing of the overlapping portion can be varied in a stepwise fashion between the inner edge portion, the outer edge portion, and an intermediate portion therebetween. Four or more degrees of curing of the overlapping portion naturally can be used. 
     (4) In a manner opposite to that of (3), the degree of curing of the overlapping portion of the adhesive material in the partial curing step can be made substantially even in Embodiments 1 to 8. 
     (5) In Embodiment 1, a case was described in which ultraviolet rays are emitted from the partial illumination device to the overlapping portion of the adhesive material through the parallax barrier panel during the partial curing step, but it is also possible to have a configuration in which the partial illumination device is placed to the front of the liquid crystal display panel, and radiates ultraviolet rays to the overlapping portion through the liquid crystal display panel. This method can similarly be applied to Embodiments 7 and 8. 
     (6) In Embodiment 2, a case was described in which ultraviolet rays are emitted from the partial illumination device to the overlapping portion of the adhesive material through the liquid crystal display panel during the partial curing step, but it is possible to have a configuration in which the partial illumination device is placed to the front of the touch panel, and radiates ultraviolet rays to the overlapping portion of the adhesive material through the touch panel. This method can similarly be applied to Embodiments 3 and 4. 
     (7) It is possible to apply the configuration of Embodiment 5 to the configurations of Embodiments 2 and 4 to stack a protective panel onto the touch panel or onto the parallax barrier panel having touch panel functionality. In such a case, the protective panel is attached through an adhesive material to the touch panel or the parallax barrier panel having touch panel functionality. 
     (8) In the respective embodiments, a case was described in which ultraviolet rays are radiated onto the attached panels only from one side during the partial curing step and the total curing step, but ultraviolet rays may be radiated from both front and rear of the attached panels. In such a case, it is preferable that both the liquid crystal display panel and the function panel (such as the parallax barrier panel) have a step structure (where a projection is provided on one of the pair of substrates) in order to attain stepwise curing of the overlapping portion. 
     (9) In Embodiments 1 to 8, a case was described in which the adhesive material was coated in stripes to extend in the longer side direction of the parallax barrier panel (liquid crystal display panel) in the adhesive material coating step, but the adhesive material can be coated in stripes to extend in the shorter side direction of the parallax barrier panel (liquid crystal display panel) or be coated in stripes to extend in a direction diagonal to both the longer side direction and the shorter side direction, for example. Also, the adhesive material can be coated in a discontinuous fashion as multiple points, and other specific coating methods for the adhesive material can be modified as appropriate. 
     (10) In the respective embodiments, a case was described in which the adhesive material was coated on the opposing surface of one of the liquid crystal display panel and the function panel (parallax barrier panel) during the adhesive material coating step, but it is possible to coat the adhesive material on the opposing surfaces of both the liquid crystal display panel and the function panel. 
     (11) In the respective embodiments, a case was described in which ultraviolet rays are radiated in a planar form on the adhesive material by the total illumination device during the total curing step, but it is possible to have a configuration in which the total illumination device radiates ultraviolet rays in a linear fashion on the adhesive material with the attached panels moving relative to the total illumination device, for example, to radiate ultraviolet rays on the entire adhesive material. 
     (12) In the respective embodiments, a case was described in which the liquid crystal display panel and the function panel (such as the parallax barrier panel) are substantially the same size in a plan view, but the size relation therebetween can be modified as appropriate such that the liquid crystal display panel is larger or the function panel is larger. 
     (13) In the respective embodiments, a case was described in which an ultraviolet curable adhesive material, which is a type of photocurable adhesive material cured by ultraviolet rays, is used as the adhesive material, but it is possible to use a visible light curable adhesive material cured by visible light, for example. Besides these, a type of photocurable adhesive material cured by both ultraviolet rays and visible light can be used. 
     (14) In the respective embodiments, a case was described in which an ultraviolet curable adhesive material, which is a type of photocurable adhesive material cured by ultraviolet rays, is used as the adhesive material, but it is also possible to use an ultraviolet/anaerobic curable adhesive material in which curing occurs in an anaerobic setting in addition to ultraviolet rays. Depending on the structure of the panels, there can be locations on the overlapping portion of the adhesive material to which it is difficult to radiate ultraviolet rays, for example, but in such a case, such locations to which it is difficult to radiate ultraviolet rays can be put in an anaerobic setting such as a vacuum to induce curing. 
     (15) Besides what was described in (14), it is also possible to use as the adhesive an anaerobic curable adhesive in which curing is not induced by light such as ultraviolet rays but is induced by an anaerobic setting. 
     (16) In the respective embodiments, a case was described in which an ultraviolet curable adhesive material, which is a photocurable adhesive material, is used as the adhesive material, but besides photocurable adhesive materials, a thermosetting adhesive material cured by heat or an electric curable adhesive material cured by the flow of electricity can be used, for example. 
     (17) Besides what was described in the respective embodiments, the specific materials used for the substrates of the liquid crystal display panel and the function panel (such as the parallax barrier panel) can be modified as appropriate. 
     (18) In Embodiment 2, the touch panel pattern on the touch panel was of the projected capacitive type, but besides this, the present invention can be applied to a surface capacitive type, a resistive film type, or an electromagnetic induction type touch panel pattern, or the like. 
     (19) In the respective embodiments, a case was described in which a liquid crystal panel that can function to display a three dimensional image to a user was used, but the present invention can be applied to a liquid crystal panel that can attain so-called multi-view functionality in which users located at two or more different viewing angles see different images, for example. 
     (20) In the respective embodiments, a case was described in which a switching liquid crystal panel that can switch between two dimensional display and three dimensional display is used, but the liquid crystal panel may have a barrier portion that is always present such that three dimensional images are always displayed, for example. 
     (21) Besides what was described in (20), it is possible to have a configuration in which a mask filter having a prescribed light-shielding pattern is formed on either of the substrates constituting the liquid crystal panel to always display three dimensional images such that switching to two dimensional display is not possible. 
     (22) In the respective embodiments, a case was described in which an edge-lit backlight device is used in the liquid crystal display device, but a configuration having a direct-lit backlight device is also included in the present invention. 
     (23) In the respective embodiments, an example was described of a transmissive liquid crystal display device having a backlight device, which is an external light source, but the present invention can also be applied to a reflective liquid crystal display device performing display using external light, and in such a case, no backlight device is needed. 
     (24) In the respective embodiments, a liquid crystal display device having a rectangular display surface was described as an example, but a liquid crystal display device having a square display surface is also included in the present invention. 
     (25) In the respective embodiments, TFTs were used as the switching elements in the liquid crystal display panel included in the liquid crystal display device, but it is possible to use a liquid crystal display device including a liquid crystal display panel having switching elements other than TFTs (such as thin film diodes (TFDs)), and besides liquid crystal display devices including liquid crystal display panels that perform color display, liquid crystal display devices including black and white liquid crystal display panels can also be used. 
     (26) In the respective embodiments above, a liquid crystal display device using a liquid crystal display panel as a display panel was described as an example, but the present invention can be applied to a display device that uses another type of display panel (such as a PDP or organic EL panel). In such a case, a backlight device can be omitted. 
     (27) In the respective embodiments, a manufacturing method was described in which, after the liquid crystal display panel and the function panel are attached together, a polarizing plate is attached to the outermost surface of the liquid crystal display panel or the function panel, but besides this, the polarizing plate may be attached to the outermost surface of the liquid crystal display panel or the function panel prior to the liquid crystal display panel and the function panel being attached to each other, for example. In such a case, it is suitable for a laminate film (protective film) to be attached to the outer surface of the polarizing plate attached to the above-mentioned outermost surface such that the polarizing plate is not susceptible to scratches and the like during the attaching step. 
     DESCRIPTION OF REFERENCE CHARACTERS 
     
         
         
           
               10 ,  110 ,  210 ,  310  liquid crystal display device (display device) 
               11 ,  111 ,  211 ,  311 ,  411 ,  511 ,  711 ,  811  liquid crystal display panel (display panel) 
               12 ,  312 ,  412 ,  512 ,  612 ,  712 ,  812  parallax barrier panel (function panel) 
               12   a ,  512   a ,  712   a ,  812   a  first substrate (one substrate) 
               12   b ,  312   b ,  512   b ,  712   b ,  812   b  second substrate (another substrate) 
               12 CP,  612 CP central portion 
               12 EP,  612 EP,  712 EP,  812 EP outer edge portion 
               28 ,  128 ,  228 ,  328 ,  428 ,  528 ,  628 ,  728 ,  828  adhesive material 
               34  projection 
               35 ,  135 ,  635 ,  735 ,  835  overlapping portion 
               35   a ,  135   a ,  735   a  inner edge portion 
               35   b ,  135   b ,  735   b  outer edge portion 
               38  touch panel (function panel) 
               42 ,  442  protective panel (function panel) 
               111   a  CF substrate (another substrate) 
               111   b  array substrate (one substrate) 
               111 EP outer edge portion 
             AA display region 
             NAA non-display region