A stereoscopic image display apparatus includes an image display panel displaying an image for a right eye and an image for a left eye in a regularly mixed manner in a plane, a phase difference element including a right-eye image display portion corresponding to the image for the right eye and a lef
A stereoscopic image display apparatus includes an image display panel displaying an image for a right eye and an image for a left eye in a regularly mixed manner in a plane, a phase difference element including a right-eye image display portion corresponding to the image for the right eye and a left-eye image display portion corresponding to the image for the left eye to provide different polarization states, a light shield layer formed to project only in an area including a boundary between the right-eye image display portion and the left-eye image display portion of the phase difference element, and a binder layer interposed between the phase difference element and the image display panel to levelly coat and fill projections and recesses formed by the light shield layers, thus bonding the image display panel, the phase difference element, and the light shield layers together.
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1. A stereoscopic image display apparatus comprising: an image display panel displaying an image for a right eye and an image for a left eye in a regularly mixed manner in a plane;a phase difference element including a right-eye image display portion corresponding to the image for the right eye and
1. A stereoscopic image display apparatus comprising: an image display panel displaying an image for a right eye and an image for a left eye in a regularly mixed manner in a plane;a phase difference element including a right-eye image display portion corresponding to the image for the right eye and a left-eye image display portion corresponding to the image for the left eye, the right-eye image display portion and the left-eye image display portion bringing about polarization such that the image for the right eye and the image for the left eye have different polarization states;a light shield layer formed only in an area including a boundary between the right-eye image display portion and the left-eye image display portion of the phase difference element, the light shield layer projecting toward the image display panel; anda binder layer interposed between a surface of the phase difference element on which the light shield layer is formed and the image display panel to levelly coat and fill projections and recesses formed by the light shield layers, thus bonding the image display panel, the phase difference element, and the light shield layers together,wherein the binder layer is made of an acrylic adhesive material in transparent gel-like form and has a layer thickness of 25 to 100 μm, the adhesive material having hardness in a range of larger than 0 and not larger than 350000 μn and an after-bonding retention force of 8 to 20 N/20 mm at 40° C. 2. A method of manufacturing a stereoscopic image display apparatus, comprising the steps of: forming a light shield layer in a projected shape relative to a surface of a phase difference element including a right-eye image display portion corresponding to an image for a right eye and a left-eye image display portion corresponding to an image for a left eye, the right-eye image display portion and the left-eye image display portion providing different polarization states, the light shield layer being positioned corresponding to only an area including a boundary between the right-eye image display portion and the left-eye image display portion of the phase difference element; andbonding the image display panel, the phase difference element, and the light shield layer together with a binder layer interposed between an image display panel displaying an image for a right eye and an image for a left eye in a regularly mixed manner in a plane and the surface of the phase difference element on which the light shield layer is formed, such that projections and the recesses formed by the light shield layers are filled and flattened with the binder layer,wherein the binder layer used in bonding the image display panel, the phase difference element, and the light shield layer together is made of an acrylic adhesive material in transparent gel-like form and has a layer thickness of 25 to 100 μm, the adhesive material having hardness in a range of larger than 0 and not larger than 350000 μN and an after-bonding retention force of 8 to 20 N/20 mm at 40° C. 3. The method of manufacturing the stereoscopic image display apparatus according to claim 2, wherein in bonding the image display panel, the phase difference element, and the light shield layer together, the bonding is performed by running a bonding roller from one end toward the other end of a laminate including the phase difference element, the light shield layer, the binder layer, and the image display panel at a speed falling within a predetermined range, the bonding roller applying a force falling within a predetermined range to the laminate from above and below in a direction in which respective layers of the laminate are overlaid one above another, andduring the bonding, the other end of the phase difference element is supported and a position of the other end of the phase difference element is moved in conjunction with the running of the bonding roller such that the phase difference element and the light shield layer are positioned with a gap left relative to the image display panel on a side nearer to the other end of the phase difference element than the bonding roller. 4. The method of manufacturing the stereoscopic image display apparatus according to claim 3, wherein the method includes, prior to forming the light shield layer, positioning the phase difference element and the light shield layer in planar relation, and wherein in positioning the phase difference element and the light shield layer, the boundary between the right-eye image display portion and the left-eye image display portion of the phase difference element is recognized by introducing irradiation light from a light source, which is disposed on one side of the phase difference element, to enter the phase difference element through a polarizing plate disposed between the light source and the phase difference element, and by detecting the light having passed through the phase difference element by an image pickup device disposed on the other side of the phase difference element. 5. The method of manufacturing the stereoscopic image display apparatus according to claim 3, wherein the method includes, prior to bonding the image display panel, the phase difference element, and the light shield layer together, positioning components of the laminate in planar relation, and wherein in positioning the components of the laminate, planar relative positions of the components of the laminate are recognized by emitting irradiation light from a light source, which is disposed on one side of the laminate, in quantity sufficient to pass through the image display panel even in a state that the image display panel as one component of the laminate has minimum light transmissivity, and by detecting the light having passed through the laminate by an image pickup device disposed on the other side of the laminate. 6. The method of manufacturing the stereoscopic image display apparatus according to claim 3, further comprising, prior to bonding the image display panel, the phase difference element, and the light shield layer together, heat-treating the phase difference element as one component of the laminate for a predetermined time at a predetermined temperature for annealing.
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