JP5076370B2 - Film sticking method - Google Patents

Description

  The present invention relates to an apparatus for attaching a film such as a protective film to an image display panel such as a plasma display panel.

  A plasma display device using a typical plasma display panel (hereinafter simply abbreviated as “panel”) as an image display panel has a wide viewing angle, is easy to enlarge, is self-luminous, and has an image display quality. Is becoming the mainstream of large-screen image display devices.

  In the panel, a large number of discharge cells are formed between a front plate and a back plate arranged to face each other. In the front plate, a plurality of display electrode pairs each consisting of a pair of scan electrodes and sustain electrodes are formed in parallel with each other on the front glass substrate, and a dielectric layer and a protective layer are formed so as to cover the display electrode pairs. Yes. The back plate has a plurality of parallel data electrodes on the back glass substrate, a dielectric layer so as to cover them, and a plurality of barrier ribs in parallel with the data electrodes formed on the back glass substrate. A phosphor layer is formed on the side walls of the barrier ribs. Then, the front plate and the back plate are arranged to face each other and sealed so that the display electrode pair and the data electrode are three-dimensionally crossed, and a discharge gas containing, for example, xenon is sealed in the internal discharge space. Here, a discharge cell is formed in a portion where the display electrode pair and the data electrode face each other.

  In order to configure a plasma display device using such a panel, a flexible wiring board (hereinafter abbreviated as “FPC”) for applying a driving voltage to each electrode is connected to the panel. In particular, a data driver IC chip for driving each data electrode is mounted on a data driver FPC for driving the data electrode. The data driver FPC is formed with an output wiring for connecting the output terminal of the IC chip and the data electrode, and an input wiring for connecting the input terminal of the IC chip and the drive circuit portion. The portion is electrically connected to each of the electrode lead portions of the plurality of data electrodes of the panel via an anisotropic conductive adhesive or the like (see, for example, Patent Document 1).

In addition, a functional film may be attached to the display surface of the panel in order to impart an antireflection effect, an unnecessary electromagnetic radiation suppression effect, a transmittance adjustment effect, a dustproof effect, and the like. Conventionally, plasma display devices have been configured by assembling a protective plate having functions such as electromagnetic shielding and panel protection to a chassis serving as a base. However, in recent years, in order to reduce the number of parts and assembly man-hours, a configuration in which a protective film is directly attached to the front surface of the panel is becoming mainstream. Along with this, a film pasting apparatus for efficiently pasting these films on panels has also been proposed. For example, Patent Document 2 discloses an automatic film laminating device used when forming a composite film for optical compensation of a liquid crystal display device.
JP 2005-338706 A JP-A-6-71756

  However, when a film is pasted on a panel to which an FPC mounted with an IC chip is connected, the FPC and the film pasting device interfere with each other and the film cannot be pasted or the film cannot be pasted uniformly. There was a risk that wrinkles would occur or that the bonded part between the FPC and the panel would peel off.

  This invention is made | formed in view of these subjects, Even if it is a case where a film is affixed on the panel to which FPC was connected, an FPC and a film sticking apparatus do not interfere, and a film is efficiently attached to a panel. It aims at providing the film sticking apparatus which can be stuck.

The film sticking method of this invention fixes the said image display panel to a panel base, hold | maintains the said flexible wiring board via the FPC fixing member to the said panel base, and sticks the said film with the said display surface facing down. It is characterized by that. Thereby, even when it is a case where a film is affixed on the panel to which FPC was connected, the film affixing apparatus which can affix a film to a panel efficiently, without interfering with FPC and a film affixing apparatus is provided. be able to.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where a film is affixed on the panel to which FPC was connected, the film affixing apparatus which can affix a film to a panel efficiently, without interfering with FPC and a film affixing apparatus. Can be provided.

  Hereinafter, the film sticking apparatus in embodiment of this invention is demonstrated using drawing.

(Embodiment)
FIG. 1 is an exploded perspective view showing a main part of a panel used in the embodiment of the present invention. The panel 10 is configured such that a glass front substrate 21 and a rear substrate 31 are arranged to face each other and a discharge space is formed therebetween. On the front substrate 21, a plurality of scanning electrodes 22 and sustaining electrodes 23 constituting the display electrode pair 28 are formed in parallel with each other. A dielectric layer 24 is formed so as to cover the scan electrodes 22 and the sustain electrodes 23, and a protective layer 25 is formed on the dielectric layer 24. A plurality of data electrodes 32 are formed on the back substrate 31, and a dielectric layer 33 is formed so as to cover the data electrodes 32. On the dielectric layer 33, a grid-like partition wall 34 is provided. Further, a phosphor layer 35 is provided on the surface of the dielectric layer 33 and the side surfaces of the partition walls 34. The front substrate 21 and the rear substrate 31 are arranged to face each other in the direction in which the scan electrode 22 and the sustain electrode 23 intersect with the data electrode 32, and in the discharge space formed therebetween, for example, neon And a mixed gas of xenon. Note that the structure of the panel 10 is not limited to the above-described structure, and for example, the panel 10 may include a stripe-shaped partition wall.

  FIG. 2 is an electrode array diagram of panel 10 in accordance with the exemplary embodiment of the present invention. N scanning electrodes 22 and n sustain electrodes 23 that are long in the row direction are arranged, and m data electrodes 32 that are long in the column direction are arranged. A discharge cell is formed at a portion where one pair of scan electrode 22 and sustain electrode 23 intersects with one data electrode 32, and m × n discharge cells are formed in the discharge space.

  3 is a plan view schematically showing the appearance of the panel. FIG. 3A is a view of the panel 10 as viewed from the rear substrate 31 side, and FIG. 3B is a view of the panel 10 as viewed from the front substrate 21 side. . The front substrate 21 and the rear substrate 31 of the panel 10 are rectangular and have a long side and a short side. As shown in FIG. 3A, an electrode lead portion 42 for a scanning electrode is formed on the right side of the short side of the front substrate 21. Each of the electrode lead portions 42 is connected to each of the n scanning electrodes 22. Further, an electrode lead-out portion 43 for a sustain electrode is formed on the left side of the short side of the front substrate 21. Each of the electrode lead portions 43 is connected to each of the n sustain electrodes 23. Each of the electrode lead portions 42 and 43 is divided into a plurality of blocks, and a scan electrode terminal FPC and a sustain electrode terminal FPC are connected to each block. Further, as shown in FIG. 3B, an electrode lead portion 44 for data electrodes is formed on the lower side of the back substrate 31. Each of the electrode lead portions 44 is connected to each of the m data electrodes 32. The electrode lead portion 44 is also divided into a plurality of blocks, and a data driver FPC for driving the data electrode 32 is connected to each block.

  4A and 4B are diagrams showing details of the data driver FPC used in the embodiment of the present invention. FIG. 4A is a plan view and FIG. 4B is a side view. In the FPC 50, an IC chip for driving a plurality of data electrodes 32 is mounted on a base film 52 made of a flexible flexible polyimide resin film or the like, and a resin 54 such as an epoxy resin is provided so as to cover the IC chip. Fill and protect the IC chip from mechanical damage. Further, a metal plate 56 for heat dissipation of the IC chip is provided on the opposite side of the IC chip that is not covered with the resin 54. The metal plate 56 is provided with a recess into which the IC chip is fitted. The IC chip is disposed in the recess and is filled with a heat conductive member such as a heat conductive compound or a heat conductive adhesive. ing. Further, the metal plate 56 is provided with a screw hole for fixing to the chassis member or the like of the plasma display device.

  In addition, a plurality of output wirings made of copper foil or the like are formed on one terminal portion 58 of the FPC 50, and connected to each of the electrode lead portions 44 for data electrodes by an anisotropic conductive adhesive or the like. An input wiring is formed on the other terminal portion 59 of the FPC 50, and is connected to the drive circuit board of the data driver circuit.

  FIG. 5 is a view showing a panel to which a data driver FPC used in the embodiment of the present invention is connected, and FIG. 5A is a plan view thereof. FIG. 5A shows an example in which a plurality of data driver FPCs 50 are attached to the electrode lead-out portion 44 for data electrodes provided on the lower side of the long side. Also, as shown in FIG. 4, the FPC 50 is provided with a metal plate 56 on a flexible base film 52, so that when the FPC 50 is attached to the panel 10 and not fixed, the FPC 50 is turned over. As shown in FIG. 5B, since the FPC 50 hangs down and moves, care must be taken in its handling.

  FIG. 6 is a view showing a cross section of a film used in the embodiment of the present invention. The film 80 is formed by laminating an optical functional film 82 having functions such as absorption of near infrared rays and antireflection, an EMI filter 84 for absorbing electromagnetic waves, and an impact absorbing film 86 for protecting the panel 10. Furthermore, an adhesive layer is provided on the surface to be attached to the panel 10, and an adhesive surface protective film 88 is provided to protect the adhesive layer. The film 80 is configured by, for example, laminating a transparent resin such as polyethylene terephthalate, acrylic resin, or silicon-based resin, and the thickness thereof is 1.3 mm.

  7 and 8 are views showing the configuration of the film sticking apparatus according to the embodiment of the present invention. FIG. 7 is a perspective view, FIG. 8A is a top view as seen from above, and FIG. 8B is a front view. FIG.

  The film pasting apparatus 100 includes a panel mounting unit 200 for mounting the panel 10 and a film mounting unit 300 for mounting a film 80 to be pasted on the panel 10.

  The panel mounting unit 200 includes a rotatable panel base 220 having a rotation shaft 210 and a panel base support frame 250 that supports the rotation shaft 210. A motor (not shown) for rotating the panel table 220 is attached to the panel table support frame 250. The panel base 220 is provided with a number of suction holes 222 for sucking and fixing the panel 10, and each suction hole 222 is connected to a vacuum pump (not shown) using an exhaust tube (not shown). . In addition, an FPC fixing member 230 for holding and fixing the FPC 50 bonded to the panel 10 is attached on the panel table 220 by screws or the like. The FPC fixing member 230 can be attached and detached as necessary, and the attachment position can be changed depending on the screen size of the panel. In the present embodiment, as shown in FIG. 5, the FPC fixing member 230 is provided so as to correspond to the panel 10 in which the FPC 50 is attached to each of the long sides of the panel 10.

  The film mounting unit 300 includes a film base 310 on which the film 80 is placed, an inclination base 320 having an actuator 322 for inclining the film base 310, and a ball spiral 332 for moving the film base 310 to below the panel base 220. And a moving mechanism including a motor (not shown) for driving the motor. The film base 310 is provided with a number of suction holes 312 for vacuum-sucking the film 80, and an exhaust tube (not shown) is connected to each suction hole 312. Further, a cleaning roller 324 having an adhesive layer for cleaning the surface of the panel 10 and an attaching roller 326 for pressing and attaching the film 80 to the surface of the panel 10 are provided at the end of the film base 310. The cleaning roller 324 has a movable mechanism so that it can move up and down. The length of the effective portion of the affixing roller 326 is set slightly longer than the width of the film 80 to be affixed, and can be easily attached to and detached from the roller that matches the width of the film 80 to be affixed. Similarly, the cleaning roller 324 can be easily attached to and detached from a roller that matches the width of the panel 10.

  FIGS. 9A and 9B are a top view and a side view showing the details and operation of the FPC fixing member 230 in the embodiment of the present invention. FIGS. 9A and 9B fix the FPC 50 to the FPC fixing member 230. FIG. FIG. 9C shows a state in which the FPC 50 is fixed to the FPC fixing member 230. As shown in FIG. 9A, the FPC fixing member 230 is a second member that sandwiches and fixes the FPC 50 between the first member 232 having a screw hole 231 attached to the panel base 220 and the first member 232. , And a hinge 236 that movably connects the first member 232 and the second member 234, and each of the first member 232 and the second member 234 includes a plurality of magnets 239. The second member 234 is magnetically attracted to the first member 232.

  In order to fix the FPC 50 using the FPC fixing member 230, as shown in FIG. 9B, first, the respective FPCs 50 are positioned between the magnets 239 of the first member 232 of the FPC fixing member 230. The panel 10 is mounted on the panel base 220. Next, as shown in FIG. 9C, the second member 234 of the FPC fixing member 230 is folded back by a hinge 236 and overlapped with the first member 232. Then, the first member 232 and the second member 234 are attracted by the magnets 239 provided on the first member 232 and the second member 234, and the FPC 50 is sandwiched and fixed between them.

  Next, operation | movement of the film sticking apparatus 100 in this Embodiment is demonstrated using FIG. 9 and FIG. In addition, FIG. 10 is operation | movement explanatory drawing of the film sticking apparatus 100 in embodiment of this invention, In order to demonstrate operation | movement, the panel base 220, the panel 10, the film base 310, the film 80, the adhesive surface protective film 88, Only the cleaning roller 324 and the pasting roller 326 are shown, and other components are omitted.

  First, the panel 10 is mounted on the panel base 220. In order to mount the panel 10, as shown in FIG. 9B, the panel 10 is mounted on the panel base 220 so that each FPC 50 is positioned between the magnets 239 of the first member 232 of the FPC fixing member 230. Mount. Then, the vacuum pump is operated to fix the panel 10 to the panel table 220 by suction. Then, as shown in FIG. 9C, each of the FPCs 50 connected to the panel 10 is sandwiched and fixed between the first member 232 and the second member 234 of the FPC fixing member 230. The state at this time is shown in FIG. Thereafter, the panel base 220 is inverted 180 degrees, and the surface of the panel 10 is directed downward.

  Next, the film 80 is mounted on the film base 310 so that the end of the film 80 is positioned on the sticking roller 326, and the vacuum pump is operated to fix the film 80 by suction. Then, the adhesive surface protective film 88 of the film 80 is peeled off. The state at this time is shown in FIG.

  Next, as shown in FIG. 10C, the cleaning roller 324 is raised and brought into contact with the surface of the panel 10. Then, the ball spiral 332 is rotated to move the film table 310 to below the panel table 220. Then, since the cleaning roller 324 rolls on the surface of the panel 10, dust on the surface of the panel 10 adheres to the adhesive layer of the cleaning roller 324. In this way, the surface of the panel 10 is cleaned. At this time, since the FPC 50 is fixed by the FPC fixing member 230 mounted on the panel base 220, the FPC 50 does not hang down and does not interfere with the cleaning roller 324.

  Next, as shown in FIG. 10 (d), the cleaning roller 324 is lowered and the film base 310 is inclined, and the affixing roller 326 is pressed against the surface of the panel 10. Then, the end portion of the film 80 is sandwiched between the sticking roller 326 and the panel 10. Then, the suction fixing of the film 80 is released. The state at this time is shown in FIG. Then, the ball spiral 332 is rotated in the reverse direction, and the film table 310 is pulled out from under the panel table 220. Then, as shown in FIG. 10 (f), the film 80 is stuck on the surface of the panel 10 while being pressed by the sticking roller 326. Also at this time, the FPC 50 is fixed by the FPC fixing member 230, and the FPC 50 does not interfere with the pasting roller 326 and the film base 310.

  Thereafter, the panel table 220 is inverted 180 degrees, and the surface of the panel 10 is directed upward again. Then, the second member 234 of the FPC fixing member 230 is opened to release the FPC 50, and the suction fixing of the panel 10 is released to remove the panel 10.

  As described above, after fixing the FPC 50 using the FPC fixing member 230, the film is attached to the panel uniformly and efficiently without interference between the FPC and the film attaching apparatus by attaching the film. Can do.

  In this embodiment, the data driver FPC is connected only to the lower side of the long side of the panel. However, the present invention is not limited to this, and the upper side of the long side of the panel is used. An FPC may be connected, and both the upper side of the long side and the lower side of the long side may be connected. In this case, by attaching an FPC fixing member at a position corresponding to the FPC of the panel base, the FPC is uniformly and efficiently applied to the panel without interfering with the cleaning roller, the application roller, and the film base. be able to.

  In addition, by attaching an FPC fixing member to the panel where the FPC is connected to the short side of the panel as needed, the film can be made uniform and efficient without the FPC interfering with the film applicator. Can be attached to the panel.

  In the present embodiment, the FPC fixing member is composed of a first member and a second member that are connected by a hinge, and the first member and the second member are each provided with a magnet. However, the structure provided with the magnet only in the 1st member or only in the 2nd member may be sufficient. Further, although the FPC can be fixed without using a magnet, the FPC can be easily held or released by using a magnet, so that workability can be improved.

  Since the film sticking apparatus of the present invention can stick the film to the panel efficiently without interference between the FPC and the film sticking apparatus, even when the film is stuck to the panel connected with the FPC. It is useful as an apparatus for attaching a film such as a protective film to an image display panel such as a panel.

The disassembled perspective view which shows the principal part of the panel used for embodiment of this invention. Electrode arrangement of the panel A plan view schematically showing the appearance of the panel The figure which shows the detail of FPC for data drivers used for embodiment of this invention The figure which shows the panel which connected FPC for the same data driver Sectional drawing of the film used for embodiment of this invention The perspective view of the film sticking apparatus in embodiment of this invention (A) is a top view of the film sticking apparatus, (b) is a front view of the film sticking apparatus. The figure which shows the detail of FPC fixing member in embodiment of this invention, and its effect | action Operation explanatory drawing of the film sticking apparatus in embodiment of this invention

Explanation of symbols

10 Panel 21 Front substrate 22 Scan electrode 23 Sustain electrode 31 Rear substrate 32 Data electrode 42, 43, 44 Electrode extraction part 50 FPC
DESCRIPTION OF SYMBOLS 80 Film 100 Film sticking apparatus 200 Panel mounting part 210 Rotating shaft 220 Panel base 230 FPC fixing member 231 Screw hole 232 1st member 234 2nd member 236 Hinge 239 Magnet 300 Film mounting part 310 Film base 320 Inclined base 324 Cleaning roller 326 Sticking roller 332 Ball spiral

Claims (1)

A film pasting method for pasting a film on the display surface of an image display panel to which a flexible wiring board is connected,
A method of attaching a film, wherein the image display panel is fixed to a panel base, the flexible wiring board is held on the panel base via an FPC fixing member, and the display surface is faced downward to attach the film.

Images