JP5075693B2 - 3D image display device manufacturing apparatus and 3D image display device manufacturing method - Google Patents

Description

  The present invention relates to a three-dimensional image display device manufacturing apparatus and a three-dimensional image display device manufacturing method.

  As a display panel of a three-dimensional image display device, a liquid crystal display panel (LCD) that controls the intensity of light using the orientation of liquid crystal, a plasma display panel (PDP) that emits a phosphor by ultraviolet rays of plasma discharge, Flat panel display such as a field emission display panel (FED) that emits a phosphor by an electron beam of a field emission type electron-emitting device and an electron emission display panel that emits a phosphor by an electron beam of a surface conduction electron-emitting device A device is used.

  As a three-dimensional image display method, there are various methods such as a multi-view method and an integral imaging method. As a three-dimensional image display device that displays a three-dimensional image using such a method, a three-dimensional image display device including a lenticular lens has been developed. When this lenticular lens is used, a three-dimensional image can be viewed without using glasses for visually recognizing a three-dimensional image.

  Usually, when a lenticular lens is provided on a display panel, a lens plate having the lenticular lens is bonded to the display panel with a photo-curing adhesive applied in a rectangular frame shape on the display panel, for example. . A technique for providing a lenticular lens on a liquid crystal display panel has been proposed for the purpose of improving light utilization efficiency (see, for example, Patent Document 1). There are two types of three-dimensional image display devices: a structure in which the lenticular lens and the display panel are separated from each other by a certain distance, and a structure in which the lenticular lens and the display panel are in close contact with each other. A structure in which is closely attached is adopted.

  When the display panel and the lens plate are bonded together, the display panel coated with an adhesive, for example, in the shape of a rectangular frame is placed on the lower stage, and the upper stage is placed on the display panel placed on the lower stage. The lens plate held in position is aligned, the upper stage and the lower stage approach, the adhesive is crushed, and the display panel and the lens plate are bonded together. Then, light is irradiated to the adhesive existing between the bonded display panel and lens plate, and the adhesive is cured to complete the display device. The display panel and the lens plate are adsorbed on the upper and lower stages, respectively.

At this time, the adhesive is cured in two steps, temporary curing and main curing. In the temporary curing, the display panel and the lens plate are brought into close contact with each other through a rectangular frame-shaped adhesive, and light is irradiated to only a few portions of the adhesive to cure the irradiated portions. In the main curing, light is irradiated to the entire adhesive after the temporary curing while pressing the entire surface of the display panel and the lens plate in the adhesion direction at a high pressure to cure the uncured portion of the adhesive.
Japanese Patent No. 3708112

  However, when temporary curing is performed, the display panel and the lenticular lens of the lens plate may not be completely adhered to each other due to the planar accuracy of the upper and lower stages and the accuracy of the members of the display panel and the lens plate. At this time, the lenticular lens in the vicinity of each irradiated portion of the adhesive may not be in close contact with the display panel.If each irradiated portion is temporarily cured in this state, the temporarily cured adhesive at each irradiated portion is the main adhesive. Since it is not crushed by the entire surface pressure when curing, a portion where the display panel and the lenticular lens are not in close contact with each other after the main curing occurs.

  As described above, the display panel and the lenticular lens of the lens plate may not be in close contact with each other, and a gap (separation distance) may be generated between them. If this gap does not fall within the allowable range (for example, the target value ± several tens of μm), the viewing zone angle error is also outside the allowable range, and the display quality of the three-dimensional image is degraded.

  The present invention has been made in view of the above, and an object thereof is to provide a three-dimensional image display device manufacturing apparatus and a three-dimensional image display device manufacturing method capable of preventing deterioration in display quality of a three-dimensional image. It is to be.

A first feature according to an embodiment of the present invention is that a lens plate having a lenticular lens and a display panel for displaying an image are attached via a photo-curing adhesive member with the lenticular lens facing the display panel. In the manufacturing apparatus for a three-dimensional image display device to be combined , a mounting table having a mounting surface on which the lens plate and the display panel are mounted in a state of being bonded together via the adhesive member , the adhesive member, spaced so as to line up a plurality of irradiation regions, a light irradiation unit for irradiating light having a wavelength of curing the adhesive member, a virtual line indicating the position of the adhesive member to the mounting surface a is, with the lens plate and the display panel is between the front mounting surface, and wherein a plurality of the irradiated area, so as to face, a plurality of elastic bodies which are provided respectively, the Prepared, front When the lens plate and the display panel are bonded to each other via the adhesive member, the lens plate and the display panel are placed on the placement surface via the elastic body. And the light irradiation unit irradiates the irradiated region of the adhesive member facing the elastic body with the light to cure the irradiated region, and in the vicinity of the irradiated region, This is to bring the display panel into close contact .

A second feature of the embodiment of the present invention is that a lens plate having a lenticular lens and a display panel for displaying an image are attached to the display panel with the lenticular lens facing the display panel via a photo-curing adhesive member. In the manufacturing apparatus for a three-dimensional image display device to be combined , a mounting table having a mounting surface on which the lens plate and the display panel are mounted in a state of being bonded together via the adhesive member , the adhesive member, spaced so as to line up a plurality of irradiation regions, a light irradiation unit for irradiating light having a wavelength of curing the adhesive member, a virtual line indicating the position of the adhesive member to the mounting surface a is located between the lens plate and the display panel and the mounting surface, and wherein the plurality of the irradiated area so as to face, comprising an elastic body provided with a frame shape, and The lens plate When the display panel is pasted together via the adhesive member, the lens plate and the display panel are placed on the placement surface via the elastic body, and the The light irradiation unit irradiates the irradiated region of the adhesive member facing the elastic body with the light to cure the irradiated region, and in the vicinity of the irradiated region, the lens plate and the display panel It is to stick .

A third feature of the embodiment of the present invention is that a lens plate having a lenticular lens and a display panel for displaying an image are pasted through a photo-curing adhesive member with the lenticular lens facing the display panel. In the manufacturing method of a three-dimensional image display device to be combined , a mounting table having a mounting surface on which the lens plate and the display panel are mounted in a state of being bonded together via the adhesive member ; the adhesive member, spaced so as to line up a plurality of irradiation regions, a light irradiation unit for irradiating light having a wavelength of curing the adhesive member, a virtual line indicating the position of the adhesive member to the mounting surface a is located between the lens plate and the display panel and the mounting surface, and wherein a plurality of the irradiated area, so as to face, and a plurality of elastic bodies which are provided respectively, the ,three By using the manufacturing apparatus of the original image display device, the lens plate and the display panel, laminated in a state where said through an adhesive member, is placed on the placing surface via the elastic body, the light irradiation by irradiating a plurality of irradiation regions of the adhesive member by parts, the plurality of curing the irradiated region, in the vicinity of the irradiated region, a step of adhering the said lens plate and the display panel, said plurality In the state where the irradiated region is cured , the pressure is applied in a direction in which the lenticular lens and the display panel are in close contact with each other, and in the adhesive member in which the plurality of irradiated regions are cured, the region is not irradiated with the light. And irradiating light having a wavelength for curing the adhesive member to cure the adhesive member .

A fourth feature of the embodiment of the present invention is that a lens plate having a lenticular lens and a display panel for displaying an image are attached to the display panel with the lenticular lens facing the display panel via a photo-curing adhesive member. In the manufacturing method of a three-dimensional image display device to be combined , a mounting table having a mounting surface on which the lens plate and the display panel are mounted in a state of being bonded together via the adhesive member ; the adhesive member, spaced so as to line up a plurality of irradiation regions, a light irradiation unit for irradiating light having a wavelength of curing the adhesive member, a virtual line indicating the position of the adhesive member to the mounting surface a is provided with the lens plate and the display panel is between the front mounting surface, and wherein the plurality of the irradiated area so as to face the elastic body frame shape provided, a 3D image Using the manufacturing apparatus shown device, the lens plate and the display panel, laminated in the state via the adhesive member, it is placed on the placing surface before through the elastic body, by the light irradiating unit by irradiating a plurality of irradiation regions of the adhesive member, curing the plurality of irradiation regions, the in the vicinity of the irradiated region, a step of adhering and the display panel and the lens plate, the plurality of the In the adhesive member in which the plurality of irradiated areas are cured while pressing in a direction in which the lenticular lens and the display panel are in close contact with each other in a state where the irradiation area is cured , Irradiating light having a wavelength for curing the adhesive member to cure the adhesive member .

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the three-dimensional image display apparatus which can prevent the fall of the display quality of a three-dimensional image and the manufacturing method of a three-dimensional image display apparatus can be provided.

  Embodiments of the present invention will be described with reference to the drawings.

(3D image display device)
As shown in FIG. 1, a three-dimensional image display device (hereinafter referred to as a display device) 1 according to an embodiment of the present invention includes a display panel 2 that displays an image, and a frame-shaped adhesive member on the display panel 2. 3 and a lens plate 4 having a lenticular lens 4a on the display panel 2 side.

  The display panel 2 includes a first substrate 2a serving as a back substrate such as an array substrate, and a second substrate 2b serving as a front substrate. In the surface of the display panel 2, a plurality of pixels are arranged in a predetermined pattern, for example, in a matrix (lattice). For example, a liquid crystal display panel is used as the display panel 2. A liquid crystal layer (not shown) is provided between the first substrate 2a and the second substrate 2b, and two polarizing plates 2c and 2d are provided on the outer surface of the display panel 2. The polarizing plates 2c and 2d are disposed on the display panel 2 so as to face each other.

  The first substrate 2a is, for example, a rectangular glass substrate. On the inner surface of the first substrate 2a (the surface facing the second substrate 2b: the upper surface in FIG. 1), there are a plurality of pixel electrodes and electrical wiring (none of which is shown) for supplying potential to them. Is provided. Each pixel electrode is provided in a dot shape (dot shape) for each pixel, and electric wiring is provided in a matrix shape (lattice shape). The second substrate 2b is, for example, a rectangular glass substrate. On the inner surface of the second substrate 2b (the surface facing the first substrate 2a: the lower surface in FIG. 1), a color filter F, a counter electrode (not shown) serving as a common electrode, and the like are provided. The color filter F includes a plurality of colored layers (red, green, and blue) provided in a dot shape or a stripe shape, and a light shielding layer such as a black matrix.

  The adhesive member 3 is provided between the display panel 2 and the lens plate 4 so as to surround the periphery of the lenticular lens 4a, and is a member for bonding the display panel 2 and the lens plate 4 together. The adhesive member 3 is formed between the display panel 2 and the lens plate 4 in a rectangular frame shape, for example. The adhesive member 3 functions as a side wall that joins the display panel 2 and the lens plate 4 to form the internal space N, and maintains the airtightness of the internal space N. The internal space N is a space formed by the display panel 2, the adhesive member 3, and the lens plate 4. As the adhesive member 3, for example, a photocurable resin or the like is used. The adhesive member 3 is provided in a rectangular frame shape in the peripheral area of the display area in the display panel 2, but is not limited thereto, and is provided as, for example, a plurality of straight lines facing each other so as to sandwich the display area. Furthermore, it may be provided in a dot shape on a frame-shaped straight line.

  The lens plate 4 is a lens member such as a lens substrate or a lens sheet having a lenticular lens 4a for generating a three-dimensional image. The lens plate 4 is a rectangular substrate, for example. In the lenticular lens 4a, a cylindrical lens (cylindrical lens) 4a1 having a shape obtained by dividing a cylinder into two in the axial direction is adjacent to a direction (short direction) orthogonal to the axial direction (longitudinal direction, that is, the ridge line direction). It is formed by arranging. Here, the cylindrical lens 4a1 is a cylindrical lens having a curvature only in one direction, and has one bent surface. The lenticular lens 4 a is fixed to the inner surface of the lens plate 4 and provided as a part of the lens plate 4. In addition, the lenticular lens 4a and the lens plate 4 may be integrated after being formed separately, or may be integrally formed using the same material from the beginning.

  Such a display device 1 applies the voltage according to the image signal (image data) to the pixel electrodes corresponding to the respective pixels arranged in a matrix, thereby improving the optical characteristics of each pixel (liquid crystal layer). Change the image to be displayed. In particular, the display device 1 displays a plurality of parallax images (two-dimensional images) that slightly differ in appearance depending on the viewing angle using an integral imaging method, and forms a three-dimensional image. This three-dimensional image is a natural, easy-to-see image and less fatigued, and the range in which such a three-dimensional image can be viewed is continuous. The display device 1 has a structure in which the lenticular lens 4a and the display panel 2 are in close contact with each other. Thereby, manufacture of the display apparatus 1 becomes easy, and since a state is easy to be maintained, product quality is stabilized.

(Three-dimensional image display device manufacturing equipment)
Next, the manufacturing apparatus 11 for the display device 1 will be described.

  As shown in FIGS. 2 to 4, the manufacturing apparatus 11 according to the embodiment of the present invention functions as a stage (mounting table) on which the display panel 2 is mounted and moves the mounted display panel 2 in the XYZθ direction. A stage moving mechanism 12 that moves the lens plate 4, a support unit 13 that supports the lens plate 4 at a predetermined height so as to face the stage moving mechanism 12, an imaging unit 14 that performs an imaging operation, and the imaging unit 14 that moves along the Z axis An imaging movement mechanism 15 that moves in a direction (vertical direction in FIG. 2), a plurality of light irradiation units 16 (see FIG. 4) that perform a light irradiation operation, and a display unit that displays an image or the like captured by the imaging unit 14 17 and a control unit 18 for controlling each unit. These parts are provided on a gantry 19.

  The stage moving mechanism 12 functions as a stage that supports the display panel 2 by its own weight or a holding mechanism (for example, suction adsorption or electrostatic adsorption). The display panel 2 is placed on the stage placement surface (stage surface) of the stage moving mechanism 12. A frame-shaped adhesive member 3 is applied to the bonding surface of the display panel 2 (see FIG. 3). In addition, the stage moving mechanism 12 also functions as a moving mechanism that moves the placed display panel 2 in the XYθZ direction (see FIG. 2). That is, the stage moving mechanism 12 includes a stage (mounting table) on which the display panel 2 is mounted and a moving mechanism that moves the stage in the XYθZ direction. The stage moving mechanism 12 is provided on the gantry 19 and is electrically connected to the control unit 18. The θ direction is the rotational direction on the XY plane in FIG.

  The stage moving mechanism 12 moves the display panel 2 in the XYθ directions to align the display panel 2 and the lens plate 4 (lenticular lens 4a), and further moves the display panel 2 in the Z-axis direction for display. The panel 2 and the lens plate 4 are bonded together. That is, the stage moving mechanism 12 functions as a moving mechanism that performs a moving operation for moving the display panel 2 and the lens plate 4 relative to each other. As this moving operation, a moving operation for alignment for aligning the lenticular lens 4a of the lens plate 4 and the display panel 2, a moving operation for bonding for bonding the lens plate 4 and the display panel 2, and the like. There is. The alignment is performed based on alignment marks (alignment marks) attached to the end of the display panel 2 and the end of the lens plate 4, respectively. These alignment marks are imaged by the imaging unit 14.

  Inside the stage moving mechanism 12 is provided a light irradiation device 20 for display such as a backlight for irradiating light. The light irradiation device 20 is turned on and used for imaging the alignment mark when the display panel 2 and the lens plate 4 are bonded together. The light irradiation device 20 is electrically connected to the control unit 18 and is turned on and off according to control by the control unit 18. The stage moving mechanism 12 has an opening 12a positioned substantially at the center and formed in, for example, a rectangular shape, and light emitted from the light irradiation device 20 enters the display panel 2 through the opening 12a. become. The opening area of the opening 12a is set to a size that allows the display panel 2 to be irradiated with light necessary for imaging the alignment mark. In addition, the stage moving mechanism 12 presses the display panel 2 during bonding. It is set so that the contact area at the time of maximization is maximized.

  The support unit 13 includes a holding frame 13a that detachably holds the lens plate 4, and a pair of support plates 13b and 13c that support the holding frame 13a at a predetermined height with respect to the stage moving mechanism 12. Yes. The holding frame 13a holds the periphery of the lens plate 4 by a holding mechanism (for example, suction adsorption or electrostatic adsorption). The holding frame 13a is formed of a light-transmitting material (for example, an acrylic resin) such as a transparent material so as not to hinder imaging by the imaging unit 14. The pair of support plates 13 b and 13 c are installed at positions facing each other via the stage moving mechanism 12 and are fixed on the gantry 19. The holding frame 13a is rotatably provided at the upper end portion of the support plate 13c. The free end of the holding frame 13a holding the lens plate 4 abuts on the upper end of the support plate 13b, and the lens plate 4 is positioned at a predetermined height facing the display panel 2 on the stage moving mechanism 12. In this state, the free end of the holding frame 13a is fixed to the upper end portion of the support plate 13b by a fixing member such as a screw, and then the lens plate 4 and the display panel 2 are bonded together.

  In this bonding, the display panel 2 is moved by the stage moving mechanism 12 toward the lens plate 4 held by the support portion 13. As a result, the display panel 2 on the stage moving mechanism 12 approaches the lens plate 4, the frame-shaped adhesive member 3 is crushed, and the polarizing plate 2c of the display panel 2 and the lenticular lens 4a of the lens plate 4 come into contact with each other. The display panel 2 and the lens plate 4 are bonded together. Therefore, the stage moving mechanism 12 and the support portion 13 function as the bonding mechanism B.

  The imaging unit 14 performs an imaging operation on the display panel 2 from the viewing distance via the lens plate 4 to acquire an image (an image including an alignment mark) (see FIGS. 2 and 3). The imaging unit 14 is provided on the support column 14a so as to be movable in the Z-axis direction (vertical direction in FIG. 2) as a contact / separation direction with respect to the stage moving mechanism 12, and is electrically connected to the control unit 18. . The support column 14a is fixedly provided on the gantry 19. For example, a CCD camera or the like is used as the imaging unit 14. Focusing of the imaging unit 14 is performed by the vertical movement of the imaging unit 14 by the imaging movement mechanism 15, an autofocus function, or the like.

  The imaging movement mechanism 15 is a movement mechanism that is provided on the column 14 a on the gantry 19 and moves the imaging unit 14 in the Z-axis direction. The imaging movement mechanism 15 is fixed to the support column 14 a and is electrically connected to the control unit 18. For example, a linear motor mechanism or a feed screw mechanism is used as the imaging movement mechanism 15. The imaging unit 14 is provided in the imaging movement mechanism 15 via a support member such as an arm member.

  As shown in FIG. 4, each light irradiation unit 16 attaches the adhesive member 3 to the photocurable adhesive member 3 existing between the display panel 2 and the lens plate 4 bonded on the stage moving mechanism 12. It is the light irradiation part for temporary hardening which each irradiates the light which has the wavelength to harden | cure. These light irradiation sections 16 are provided above the stage moving mechanism 12 and the support section 13 so as to be able to irradiate light to the adhesive member 3 between the bonded display panel 2 and lens plate 4. . The adhesive member 3 is applied in a frame shape between the display panel 2 and the lens plate 4 (see FIG. 3). For example, each of the light irradiation sections 16 is provided with six irradiation regions R arranged along the frame-shaped adhesive member 3 so as to be spaced apart from each other, that is, six irradiation sites in the frame-shaped adhesive member 3. Each is irradiated with light to cure the six portions (temporary curing). Here, when an ultraviolet curable resin is used as the adhesive member 3, the light irradiation unit 16 that irradiates ultraviolet rays is used. In addition, when light irradiation by the light irradiation unit 16 is hindered by the holding frame 13 a of the support unit 13, a light irradiation window is provided in the holding frame 13 a corresponding to each light irradiation unit 16.

  The display unit 17 displays an image captured by the imaging unit 14. The display unit 17 is provided on the gantry 19 and is electrically connected to the control unit 18. For example, a liquid crystal display or a CRT (Cathode Ray Tube) display is used as the display unit 17.

  The control unit 18 includes a controller that centrally controls each unit, and a storage unit that stores various programs, various data, and the like (none of which are shown). The storage unit includes a RAM (Random Access Memory) that functions as a work area of the controller, a nonvolatile memory, and the like. The control unit 18 controls each unit based on various programs and various data stored in the storage unit. In particular, the control unit 18 executes a series of data processing for calculating or processing data, and a bonding process for bonding the display panel 2 and the lens plate 4. The pasting process includes an imaging process for performing imaging, a positioning process for performing positioning, a temporary curing process for performing temporary curing, and the like. The storage unit stores various setting information such as imaging conditions and pasting conditions.

  Next, the stage moving mechanism 12 will be described in detail.

  As shown in FIGS. 5 and 6, a plurality of elastic bodies D are provided on the stage placement surface (stage surface) of the stage moving mechanism 12. These elastic bodies D are on the imaginary line of the stage mounting surface indicating the position of the adhesive member 3 on the stage mounting surface, and further within a plurality of irradiation regions R irradiated with light by each light irradiation unit 16. (In other words, the adhesive member 3 on the display panel 2 placed on the stage placement surface is positioned so as to be opposed to a plurality of irradiated locations irradiated with light). At this time, each elastic body D has a predetermined placement position of the display panel 2 with respect to the stage, a predetermined application position of the adhesive member 3 with respect to the display panel 2 (design value such as application shape), and predetermined temporary curing of the adhesive member 3. Arranged based on position. Each elastic body D is a protrusion (an elastic protrusion) for compensating the flatness of the stage, and brings the display panel 2 and the lenticular lens 4a of the lens plate 4 into close contact with each other. Each elastic body D is formed in, for example, a rectangular parallelepiped shape, for example, six pieces are provided. As such an elastic body D, for example, rubber or silicone is used.

  In addition, as shown in FIG. 7, the curing device 51 for main curing is provided as a part of the manufacturing apparatus 11 or as a separate body. The main curing device 51 includes a stage 51a on which the bonded display panel 2 and lens plate 4 are placed, and a pressurizing unit 51b that pressurizes the display panel 2 and lens plate 4 on the stage 51a. And a main-curing light irradiation unit 51c that irradiates light to the adhesive member 3 existing between the display panel 2 and the lens plate 4 on the stage 51a. The stage 51a and the pressure unit 51b have high plane parallel accuracy. The pressure unit 51b is a flat surface pressure device that presses the display panel 2 and the lens plate 4 on the stage 51a. The pressurizing unit 51b presses the display panel 2 and the lens plate 4 on the stage 51a toward the stage 51a, and crushes uncured portions of the adhesive member 3 that are not temporarily cured. In addition, when bonding is performed under reduced pressure, the same effect as the pressurization by the pressurizing unit 51b can be obtained by opening to the atmosphere. The light irradiating unit 51c for main curing irradiates light over the entire surface of the display panel 2 and the lens plate 4 on the stage 51a pressed by the pressing unit 51b to cure the entire frame-shaped adhesive member 3. Let (main curing).

  Next, the manufacturing operation (manufacturing method) of the display device 1 performed by the manufacturing apparatus 11 will be described. In addition, the control part 18 of the manufacturing apparatus 11 performs a bonding process, and controls each part. At this time, the display panel 2 is placed on the stage moving mechanism 12 via each elastic body D, and the lens plate 4 is in a predetermined position with respect to the display panel 2 on the stage moving mechanism 12 with the holding frame 13a closed. (See FIGS. 2 and 3).

  As shown in FIG. 8, the manufacturing apparatus 11 aligns the display panel 2 and the lens plate 4 before bonding (step S1). That is, the control unit 18 of the manufacturing apparatus 11 causes the light irradiation apparatus 20 to perform an irradiation operation in a state where the holding frame 13a is closed. Here, the irradiation operation is an operation of irradiating the display panel 2 with light for imaging the alignment mark. Next, the control unit 18 performs imaging in the light irradiation state. That is, the control unit 18 moves the display panel 2 to a predetermined position for imaging with respect to the lens plate 4 by the stage moving mechanism 12 with the holding frame 13a closed, and causes the imaging unit 14 to perform an imaging operation ( (See FIG. 3). Here, the imaging operation is an operation for imaging the display panel 2 on the stage moving mechanism 12 via the lens plate 4.

  Next, the manufacturing apparatus 11 obtains a positional deviation amount based on the captured image, and performs alignment based on the obtained positional deviation amount. That is, the control unit 18 of the manufacturing apparatus 11 calculates a positional deviation amount based on the alignment mark from the obtained image by image processing, and performs a movement operation for alignment on the stage moving mechanism 12 so as to eliminate the calculated positional deviation amount. Let it run. Thereby, the display panel 2 on the stage moving mechanism 12 is slid and rotated by the amount of displacement, that is, moved in the XYθ direction, and the alignment of the display panel 2 and the lenticular lens 4a in the planar direction is completed.

  In this way, the display panel 2 and the lens plate 4 are arranged so that the displacement of the relative position between the display panel 2 and the lenticular lens 4a in the planar direction is within an allowable range (for example, within a range of target value ± several μm). It is necessary to paste them together. When the amount of deviation increases, the deviation of the relative position becomes out of the allowable range, the center of the viewing zone shifts and affects the viewing zone, and the display quality of the three-dimensional image is deteriorated. For example, the shift amount (shift amount) at the center of the viewing zone needs to be 10 mm or less.

  Returning to FIG. 8, the manufacturing apparatus 11 performs bonding in accordance with the completion of the alignment (step S2). That is, when the positioning is completed, the control unit 18 of the manufacturing apparatus 11 causes the stage moving mechanism 12 to execute a bonding movement operation. As a result, the display panel 2 on the stage moving mechanism 12 approaches the lens plate 4 and the adhesive member 3 is crushed. As shown in FIG. 9, the polarizing plate 2 c of the display panel 2 and the lenticular lens 4 a of the lens plate 4. Are in close contact with each other, and the bonding of the display panel 2 and the lens plate 4 is completed. At this time, since each elastic body D is provided on the stage placement surface of the stage moving mechanism 12, the lenticular lens 4 a in the vicinity of each irradiated portion of the adhesive member 3 is securely in close contact with the display panel 2. . Here, in FIG. 9 to FIG. 11, the adhesive member 3 is omitted to show the contact state between the display panel 2 and the lenticular lens 4 a of the lens plate 4.

  Then, the manufacturing apparatus 11 performs temporary hardening with respect to the display panel 2 and the lens plate 4 after bonding according to completion of bonding (step S3). That is, when the bonding is completed, the control unit 18 of the manufacturing apparatus 11 causes each light irradiation unit 16 for temporary curing to perform an irradiation operation. Here, the irradiation operation is an operation of irradiating a part of the adhesive member 3 between the display panel 2 and the lens plate 4 with light. As a result, as shown in FIG. 10, light is emitted from each light irradiation unit 16, and the light is applied to the display panel 2 and the lens plate 4 after bonding on the stage moving mechanism 12, that is, each elasticity. It irradiates with respect to each irradiation area | region R (each irradiation location of the adhesive member 3) which respectively opposes the body D. FIG. By this light irradiation, only the adhesive member 3 in the vicinity of the contact state where the lenticular lens 4a is in close contact with the display panel 2 is cured (temporary curing). Thereafter, the display panel 2 and the lens plate 4 after the temporary curing are transported from the stage moving mechanism 12 to the curing device 51 for main curing by a person such as an operator or a machine such as a robot.

  Finally, the curing device 51 for main curing performs main curing on the display panel 2 and the lens plate 4 after the temporary curing (Step S4). That is, the main curing device 51 causes the pressure unit 51b to perform a pressing operation, and further causes the main curing light irradiation unit 51c to perform an irradiation operation. Here, the pressing operation is an operation in which the pressing unit 51b presses the display panel 2 and the lens plate 4 on the stage 51a toward the stage 51a, and the irradiation operation is an adhesive member between the display panel 2 and the lens plate 4. 3 is an operation of irradiating light to the entirety of 3. As a result, as shown in FIG. 11, the display panel 2 and the lens plate 4 after temporary curing placed on the stage 51a are pressed by the pressure unit 51b, and the adhesive member 3 of the uncured portion is crushed, The polarizing plate 2c of the display panel 2 and the lenticular lens 4a of the lens plate 4 are in contact with each other and are in close contact with each other. Further, in this state, light is emitted from the light irradiation unit 51c, and the light is irradiated onto the display panel 2 and the lens plate 4 after the temporary curing on the stage 51a, that is, over the entire surface of the adhesive member 3. . By this light irradiation, the entire adhesive member 3 is completely cured (main curing).

  At this time, the vertical distance that is the distance between the convex portion (lens end) of the lenticular lens 4a and the color filter F is within an allowable range (for example, a target value ± several tens of μm), that is, the lenticular lens. It is necessary to bond the display panel 2 and the lens plate 4 so that the gap, which is the distance between the convex portion of the lens 4a and the display panel 2, is within an allowable range (for example, a target value ± several tens of μm). is there. When the gap is increased, the vertical distance is out of the allowable range, and the error in the viewing zone angle is out of the allowable range (for example, a target value ± several deg range), so that the display quality of the three-dimensional image is deteriorated. .

  In such a manufacturing process, the display panel 2 is placed on the stage placement surface of the stage moving mechanism 12 provided with each elastic body D via each elastic body D, and the display panel 2 and the lens plate 4 are attached. After the bonding, the irradiated portion of the adhesive member 3 existing between the bonded display panel 2 and the lens plate 4 is irradiated with light. In addition, when irradiating light, since it irradiates light with respect to the some irradiated location in the adhesive member 3, respectively, when providing each elastic body D, each so that it may oppose those irradiated locations A plurality of elastic bodies D are provided. At this time, these elastic bodies D are a predetermined placement position of the display panel 2 with respect to the stage, a predetermined application position of the adhesive member 3 with respect to the display panel 2 (design value such as application shape), and a predetermined temporary position of the adhesive member 3. It arrange | positions based on a hardening position.

  Thus, as shown in FIG. 5 and FIG. 6, each elastic body D is provided on the stage placement surface of the stage moving mechanism 12, so when the display panel 2 and the lens plate 4 are bonded together, As shown in FIG. 9, the lenticular lens 4 a in the vicinity of each irradiated portion of the adhesive member 3 is surely completely adhered to the display panel 2. Then, when performing temporary hardening, as shown in FIG. 10, light is irradiated to each irradiation location of the adhesive member 3 in the contact | adherence state, and each of these irradiation locations is temporarily cured. By this temporary curing, only a part of the adhesive member 3 positioned in the vicinity of the close contact state in which the display panel 2 and the lenticular lens 4a are in close contact with each other is cured, and the adhesive member 3 positioned in the vicinity of the non-contact state in which they are not in close contact. It is prevented that a part of is hardened. Thereafter, as shown in FIG. 11, the display panel 2 after temporary curing and the lenticular lens 4a are pressed and completely adhered by main curing, and the uncured portion of the adhesive member 3 is completely cured. Here, in the temporary curing, only a part of the adhesive member 3 in the vicinity of the contact state is cured, and a part of the adhesive member 3 in the vicinity of the non-contact state is not cured. A part (uncured part) of the adhesive member 3 is easily crushed by pressing, and the display panel 2 and the lenticular lens 4a are completely adhered. Accordingly, it is possible to suppress the occurrence of a gap after the main curing, so that the gap can be within an allowable range. As a result, since the vertical distance is within the allowable range, the error of the viewing zone angle can be within the allowable range.

  As described above, according to the embodiment of the present invention, by providing each elastic body D on the stage mounting surface of the stage moving mechanism 12, the flatness of the stage at the time of bonding, the display panel 2 and the lens plate The lenticular lens 4a in the vicinity of each irradiated portion of the adhesive member 3 is surely adhered to the display panel 2 without depending on the accuracy of the member 4 or the like. When temporary curing is performed, light is irradiated to each irradiated portion of the adhesive member 3 in the close contact state, and the adhesive member 3 at those irradiated portions is temporarily cured. Thereby, only a part of the adhesive member 3 positioned in the vicinity of the close contact state where the display panel 2 and the lenticular lens 4a are in close contact with each other is cured, and a part of the adhesive member 3 positioned in the vicinity of the non-contact state where they are not in close contact with each other. Is not cured but is crushed by the main curing, so that it is possible to suppress the occurrence of a gap after the main curing due to the curing of a part of the adhesive member 3 in the vicinity of the non-contact state. Therefore, the gap can be within the allowable range, that is, the viewing angle error can be within the allowable range, and as a result, the display quality of the three-dimensional image can be prevented from deteriorating.

  Further, since the stage 12 of the stage moving mechanism 12 has an opening 12a and the holding frame 13a of the support 13 has a frame shape, it is difficult to ensure the accuracy of parallelism between the display panel 2 and the lens plate 4. When curing is performed, the lenticular lens 4a in the vicinity of each irradiated portion of the adhesive member 3 can be securely adhered to the display panel 2 without depending on the accuracy of the parallelism.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, a plurality of elastic bodies D are provided on the stage mounting surface, but the present invention is not limited to this, and as shown in FIG. 12, a frame-shaped (annular) elastic body D may be provided. At this time, the frame-shaped elastic body D is provided on a virtual line (virtual line indicating the position of the adhesive member 3 on the stage mounting surface) on the stage mounting surface. By using this frame-shaped elastic body D, the mounting area of the elastic body D is increased as compared with the case where each elastic body D shown in FIG. 5 is used. The degree of freedom to change the coating pattern is increased. Since the amount of elastic material of each elastic body D shown in FIG. 5 is smaller than the amount of elastic material of elastic body D shown in FIG. 12, the use of each elastic body D shown in FIG. Can do.

  Moreover, in the above-mentioned embodiment, each elastic body D is formed in, for example, a rectangular parallelepiped shape, for example, six pieces are provided. However, the present invention is not limited to this, and the shape and number are not limited.

  Furthermore, in the above-described embodiment, the display panel 2 is placed on the stage placement surface, and the lens plate 4 is attached to the support portion 13. However, the present invention is not limited to this. May be attached to the support portion 13 and the lens plate 4 may be placed on the stage placement surface.

  In addition, in the above-described embodiment, a liquid crystal display panel (LCD) is used as the display panel 2. However, the present invention is not limited to this. For example, a plasma display panel (PDP), a field emission display panel (FED) In addition, an electron emission display panel (SED) or the like may be used.

  Finally, in the above-described embodiment, various numerical values are given, but these numerical values are merely examples and are not limited.

It is sectional drawing which shows schematic structure of the display apparatus which concerns on one Embodiment of this invention. It is a schematic diagram which shows schematic structure of the manufacturing apparatus of the display apparatus which concerns on one Embodiment of this invention. It is explanatory drawing for demonstrating the alignment which the manufacturing apparatus shown in FIG. 2 performs. It is explanatory drawing for demonstrating the temporary hardening which the manufacturing apparatus shown in FIG. 2 performs. It is a top view which shows the elastic body on the stage moving mechanism with which the manufacturing apparatus shown in FIG. 2 is provided. It is a side view which shows the elastic body on the stage moving mechanism with which the manufacturing apparatus shown in FIG. 2 is provided. 1 is a perspective view showing a schematic configuration of a main curing device according to an embodiment of the present invention. It is a flowchart which shows the flow of the bonding process which the manufacturing apparatus shown in FIG. 2 and the hardening apparatus shown in FIG. 7 perform. It is explanatory drawing for demonstrating bonding operation | movement. It is explanatory drawing for demonstrating temporary hardening operation | movement. It is explanatory drawing for demonstrating this hardening operation | movement. It is a top view which shows the modification of the elastic body shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Three-dimensional image display apparatus (display apparatus), 2 ... Display panel, 3 ... Adhesive member, 4 ... Lens plate, 4a ... Lenticular lens, 11 ... Manufacturing apparatus of 3D image display apparatus, 12 ... Mounting stage (stage movement) Mechanism), 16 ... light irradiation part, D ... elastic body

Claims (4)

In a manufacturing apparatus of a three-dimensional image display device in which a lens plate having a lenticular lens and a display panel for displaying an image are bonded to each other through a photo-curing adhesive member with the lenticular lens facing the display panel.
A mounting table having a mounting surface on which the lens plate and the display panel are mounted in a state of being bonded via the adhesive member ;
Said adhesive member on the mounting surface, so that a plurality of irradiation regions spaced lined, a light irradiating portion for irradiating light having a wavelength of curing the adhesive member,
A virtual line indicating the position of the adhesive member on the placement surface, and the lens plate and the display panel is between the front mounting surface, and wherein the plurality of irradiation regions, as opposed And a plurality of elastic bodies provided respectively ,
When the lens plate and the display panel are bonded together via the adhesive member, the lens plate and the display panel are in a state of being placed on the placement surface via the elastic body. And the light irradiation unit irradiates the irradiated region of the adhesive member facing the elastic body with the light to cure the irradiated region, and in the vicinity of the irradiated region, the lens plate A device for manufacturing a three-dimensional image display device, wherein the display panel and the display panel are in close contact with each other . In a manufacturing apparatus of a three-dimensional image display device in which a lens plate having a lenticular lens and a display panel for displaying an image are bonded to each other through a photo-curing adhesive member with the lenticular lens facing the display panel.
A mounting table having a mounting surface on which the lens plate and the display panel are mounted in a state of being bonded via the adhesive member ;
Said adhesive member on the mounting surface, so that a plurality of irradiation regions spaced lined, a light irradiating portion for irradiating light having a wavelength of curing the adhesive member,
A virtual line indicating the position of the adhesive member to the mounting surface is between the said lens plate and the display panel and the mounting surface, and wherein the plurality of the irradiated area so as to face , comprising an elastic body frame shape provided, a,
When the lens plate and the display panel are bonded together via the adhesive member, the lens plate and the display panel are in a state of being placed on the placement surface via the elastic body. And the light irradiation unit irradiates the irradiated region of the adhesive member facing the elastic body with the light to cure the irradiated region, and in the vicinity of the irradiated region, the lens plate A device for manufacturing a three-dimensional image display device, wherein the display panel and the display panel are in close contact with each other . In a manufacturing method of a three-dimensional image display device in which a lens plate having a lenticular lens and a display panel for displaying an image are bonded to each other through a photo-curing adhesive member with the lenticular lens facing the display panel.
The display panel and the lens plate, the mounting table having a mounting surface to be mounted in a state where said bonded via an adhesive member, the adhesive member on the mounting surface, a plurality of the spaced A light irradiating unit that irradiates light having a wavelength for curing the adhesive member so that irradiation regions are arranged , and an imaginary line indicating the position of the adhesive member on the placement surface, the lens plate and the display panel When there between the mounting surface, and wherein a plurality of the irradiated area, so as to face, and a plurality of elastic bodies which are provided, respectively, and using the manufacturing apparatus of a three-dimensional image display device And
The lens plate and the display panel, the laminated state through an adhesive member, the placed on the elastic body said placing surface on the leading through a plurality of the irradiated region of the adhesive member by the light irradiation unit And curing the plurality of irradiated areas, and bringing the lens plate and the display panel into close contact with each other in the vicinity of the irradiated areas ;
In the state in which the plurality of irradiated areas are cured, the light is not irradiated on the adhesive member in which the plurality of irradiated areas are cured while pressing in a direction in which the lenticular lens and the display panel are in close contact with each other. Irradiating the region with light having a wavelength for curing the adhesive member to cure the adhesive member ;
A method for manufacturing a three-dimensional image display device. In a manufacturing method of a three-dimensional image display device in which a lens plate having a lenticular lens and a display panel for displaying an image are bonded to each other through a photo-curing adhesive member with the lenticular lens facing the display panel.
The display panel and the lens plate, the mounting table having a mounting surface to be mounted in a state where said bonded via an adhesive member, the adhesive member on the mounting surface, a plurality of the spaced A light irradiating unit that irradiates light having a wavelength for curing the adhesive member so that irradiation regions are arranged , and an imaginary line indicating the position of the adhesive member on the placement surface, the lens plate and the display panel If it is between the front mounting surface, and wherein the plurality of the irradiated area so as to face, by using the manufacturing apparatus of a three-dimensional image display device comprising an elastic member provided with a frame shape, ,
The lens plate and the display panel, the laminated state through an adhesive member, the placed on the elastic body said placing surface on the leading through a plurality of the irradiated region of the adhesive member by the light irradiation unit And curing the plurality of irradiated areas, and bringing the lens plate and the display panel into close contact with each other in the vicinity of the irradiated areas ;
In the state in which the plurality of irradiated areas are cured, the light is not irradiated on the adhesive member in which the plurality of irradiated areas are cured while pressing in a direction in which the lenticular lens and the display panel are in close contact with each other. Irradiating the region with light having a wavelength for curing the adhesive member to cure the adhesive member ;
A method for manufacturing a three-dimensional image display device.

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