JP2006330205A - Holding plate separating device of plasma display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively prevent cut surfaces cut and separated by a cutting member from adhering to each other again afterward. <P>SOLUTION: A device for separating a holding plate 7 for heat dissipation of a plasma display panel brings a cutting member 10 into contact with an adhesive member 6 and cuts the adhesive member 6 while moving the cutting member 10 relatively to a display panel 5, to separate the holding plate 7 for heat dissipation from the display panel. In this device, an inserted member 11 inserted to an expanded part between a rear-side glass substrate 5b which is disposed at the rear of the cutting member 10 and is separated by the cutting member 10, and the holding plate 7 for heat dissipation is provided so as to move relatively to the display panel 5 together with the cutting member 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention comprises a display panel composed of a display side glass substrate and a back side glass substrate in which a discharge space is formed, and a metal holding plate fixed to the back side glass substrate via an adhesive member. The present invention relates to a plasma display panel holding plate separating apparatus that cuts an adhesive member with a cutting member and separates a metal holding plate from a rear glass.

  In recent years, a plasma display device has been used as a flat display device having a large screen and excellent visibility. In this plasma display apparatus, a pair of glass substrates are bonded together to form a glass substrate, and the inner surface of one glass substrate is coated with ultraviolet light emitted using a discharge gas injected between the two glass substrates. The body is illuminated and illuminated. When the light emission due to this discharge is repeated, the glass substrate becomes hot. Therefore, the chassis of the glass substrate is constituted by a holding plate having a heat radiation function such as aluminum, and this holding plate is made of acrylic or silicone adhesive with the glass substrate. It is fixed on the back and unitized as a plasma display panel.

  In recent years when recycling of household electrical appliances is regarded as important from the viewpoint of effective use of resources, when such a plasma display device is discarded due to a failure or the like, not only glass substrates but also precious metals contained in the interior thereof When collecting the kind, it is necessary to first separate and disassemble the glass substrate constituting the plasma display panel and the holding plate having a heat radiation function. As a method for separating and disassembling the glass substrate and the holding plate, a method of heating the plasma display panel and softening the adhesive is known, but not only a dedicated heating furnace is required, but also the glass substrate and the holding plate. Heat distortion was added to the material, making it unsuitable for reuse. Under such circumstances, as a means for separating the glass substrate and the holding plate in a short time without requiring a heating furnace, a technique of cutting the adhesive portion with a cutting member such as a cutting blade or a heating wire is adopted. (See Patent Document 1).

Japanese Patent Laying-Open No. 2004-184677 (see paragraphs 0013 and FIGS. 1 and 7)

  However, in the separating and disassembling means described in Patent Document 1, when the adhesive portion is cut with a cutting member such as a cutting blade or a heating wire, the cutting blade and the heating wire are thin. If the cutting surface is cut by separating the upper and lower heating wires into the bonding portion, the cutting surface once cut and separated up and down is pressed by the weight of the glass substrate or the like after passing through the cutting member and rebonded. There was a problem.

  The present invention has been made in view of such a situation, and the plasma that can effectively prevent the cut surfaces separated by being cut by the cutting member from being re-adhered after being cut by the cutting member. It is an object of the present invention to provide a display panel holding plate separating apparatus.

In order to solve the above problems, a plasma display panel holding plate separating apparatus according to claim 1 of the present invention provides:
A plasma display panel comprising a display panel comprising a display side glass substrate and a back side glass substrate having a discharge space formed therein, and a heat dissipation holding plate fixed to the back side glass substrate via an adhesive member In the plasma display panel heat radiation holding plate separating apparatus, the cutting member is brought into contact with the adhesive member and moved relative to the display panel while the adhesive member is cut to separate the heat radiation holding plate from the display panel. There,
An insert inserted behind the cutting member and inserted into the expanded portion of the rear glass substrate separated from the cutting member by the cutting member and the heat radiating holding plate is moved relative to the display panel together with the cutting member. It is characterized by being provided.
According to this feature, when the adhesive member is cut by the cutting member, the divided rear side glass substrate and the heat dissipation holding plate are separated by the insert, so that the adhesive member remains attached after cutting. Re-adhesion between the side glass substrate and the heat dissipation holding plate can be effectively prevented.

A plasma display panel holding plate separating apparatus according to claim 2 of the present invention is the plasma display panel holding plate separating apparatus according to claim 1,
The insert is characterized by a wedge member whose thickness gradually decreases in the cutting direction of the cutting member.
According to this feature, even when the separation opening angle between the rear glass substrate and the heat dissipation holding plate is still small at the initial stage of cutting by the cutting member, the thickness of the wedge member on the tip side is thin, so that the gap between the two is surely ensured. Can be inserted. Further, in the latter stage of cutting by the cutting member, even if the rear side glass substrate and the heat dissipation holding plate are about to come into contact again, the thickness of the rear end side of the wedge member is thick, so that both can be reliably separated and the wedge member can The cutting resistance of the cutting member to which the spreading force is always applied can be reduced.

The plasma display panel holding plate separating apparatus according to claim 3 of the present invention is the plasma display panel holding plate separating apparatus according to claim 1 or 2,
The insert is formed in an elongated strip shape, and a plurality of the inserts are arranged at predetermined intervals in the longitudinal direction of the cutting member.
According to this feature, by arranging a plurality of wedge members at predetermined intervals with respect to the longitudinal direction of the cutting member, even if the width of the plasma display panel is large, the contact area with the separated display panel is increased. It is possible to prevent the re-contact between the rear glass substrate and the heat dissipation holding plate while effectively reducing the cutting load applied to the cutting member as much as possible.

A plasma display panel holding plate separating apparatus according to claim 4 of the present invention is the plasma display panel holding plate separating apparatus according to any one of claims 1 to 3,
A display panel having a heat dissipation holding plate fixed via the adhesive member is installed on an installation table, and the movable body on which the cutting member and the insertion body are integrally attached is cut on the installation table. It is characterized by being provided so as to be movable in the cutting direction of the member.
According to this feature, not only the cutting member that is lighter than the heavy display panel can be moved, but also the insertion member is moved relative to the display panel together with the cutting member simply by moving the moving member. Therefore, the structure of the device can be simplified.

A plasma display panel holding plate separating apparatus according to claim 5 of the present invention is the plasma display panel holding plate separating apparatus according to any one of claims 1 to 4,
A non-adhesive layer is formed on the outer surface of at least one of the cutting member and the insert to reduce the adhesiveness with the adhesive member.
According to this feature, since the adhesive member is less likely to adhere to the cutting member or the insert due to the non-adhesive layer formed on the outer surface of the cutting member or the insert, the cutting member or the insert can be smoothly moved.

A plasma display panel holding plate separating apparatus according to claim 6 of the present invention is the plasma display panel holding plate separating apparatus according to any one of claims 1 to 5,
During the cutting of the adhesive member, a solution supply means is provided for supplying the solution almost continuously to the outer surface of the cutting member and the insert.
According to this feature, since the solution always flows continuously on the outer surface of the cutting member or the insert, the cut surface of the adhesive member after cutting adheres to the cutting member or the insert or is sticky. It is suppressed that cutting waste adheres to a cutting member or an insert.

  Examples of the present invention will be described below.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is an exploded perspective view showing a plasma display panel to which the present invention is applied, and FIG. 2 is an entire chassis member separating apparatus as an embodiment of the present invention. 3A is a cross-sectional view taken along the line AA of FIG. 2, FIG. 3B is a plan view showing the chassis member separating apparatus of FIG. 4A, and FIG. FIG. 5 is a longitudinal sectional view showing a wedge member, FIG. 5 is an enlarged sectional view of a main part showing a cutting state of the heat conductive sheet by the cutting blade, and FIGS. 6A to 6C are cutting the heat conductive sheet by the cutting blade. It is a schematic sectional drawing which shows a condition.

  The plasma display panel 1 shown in FIG. 1 includes a front case portion 2 and a back case portion 8 which are combined with each other to form a case, and an internal unit 30 accommodated in the case.

  The internal unit 30 includes a chassis member 7 as a heat dissipation holding plate, a display panel 5 supported on the front surface of the chassis member 7, and heat as an adhesive member interposed between the chassis member 7 and the display panel 5. The conductive sheet 6 and the optical function filter 3 having functions such as antistatic, color tone / brightness correction, electromagnetic wave shielding and the like and disposed on the front surface of the display panel 5.

  As shown in FIG. 1 and FIG. 3 in particular, the display panel 5 is composed of a glass front plate 5a (display side glass substrate) and a back plate 5b (back side glass substrate). The long side direction is longer than the back plate 5b, and the short side direction is shorter. Accordingly, there is a region where the front plate 5a and the back plate 5b do not overlap each other, and terminals (not shown) connected to electrodes (not shown) provided in the display panel 5 are formed in the non-polymerized region. ing. A plurality of film-like wiring (not shown) having a connector (not shown) at the tip is crimped to this terminal, and the connector is provided on a circuit board (not shown) arranged on the back surface of the chassis member 7. By being coupled to (not shown), the circuit board and the display panel 5 are electrically connected.

  The peripheral portions of the front plate 5a and the back plate 5b are bonded and sealed with a sealing material 9 made of low melting point glass to form a gas discharge space, and a predetermined pressure is contained in the sealed gas discharge space. A rare gas (such as a mixed gas of neon and xenon) is enclosed.

  Specifically, the front plate 5a covers a transparent glass substrate (not shown) and an electrode pair (not shown) made up of display electrodes formed on a surface of the glass substrate facing the rear plate 5b. A transparent dielectric layer (not shown) made of dielectric glass is formed, and a protective layer (not shown) made of magnesium oxide (Mgo) provided on the rear side of the dielectric layer.

  The back plate 5b includes a transparent glass substrate (not shown), an address electrode (not shown) patterned on the surface of the glass substrate facing the front plate 5a, and a back surface formed so as to cover the address electrode. It is composed of a dielectric layer (not shown) and a rib (not shown) provided on the front side of the dielectric layer, and red (R), green (G), and blue (B) between the ribs. A phosphor layer is formed.

  Thus, the space part divided by each rib becomes a light emitting region, and the phosphor layer is applied to each light emitting region. The rib and the address electrode are formed in parallel, the display electrode is orthogonal to the address electrode, and a discharge cell (not shown) is formed at the intersection of the display electrode and the address electrode.

  In the display panel configured as described above, an address pulse is applied between the address electrode and the display electrode based on image data to be displayed, and then a sustain pulse is applied between the paired display electrodes. Sustain discharge occurs selectively at. As a result, ultraviolet rays are generated in the discharge cells in which the sustain discharge has occurred, and visible light is emitted from the phosphor layers of the respective colors (R, G, and B) excited by the ultraviolet rays, and an image is displayed.

  The chassis member 7 is made of aluminum die-casting or the like. Although not shown in the drawing, a plurality of heat radiation fins are integrally formed over almost the entire area, and the display panel 5 performs light emission driving and light emission control. A circuit board is attached.

  The heat conductive sheet 6 efficiently conducts heat of the display panel 5 to the chassis member 7, for example, with a double-sided pressure sensitive adhesive sheet material made of a thermosetting pressure sensitive adhesive composition such as acrylic, silicone, or epoxy. Composed. That is, the heat conductive sheet 6 made of the thermosetting pressure-sensitive adhesive composition has heat resistance stability, and the problem due to thermal expansion between the display panel 5 and the chassis member 7 during use is alleviated. Peeling is less likely to occur. Moreover, the thickness after thermosetting of the heat conductive sheet 6 in a present Example is about 1-2 mm.

  FIG. 2 shows a chassis member separating apparatus 20 in the present embodiment. In the following description, the longitudinal direction (left and right direction in FIG. 2) of the chassis member separating apparatus 20 will be described as the front and rear direction, and the direction orthogonal to the longitudinal direction will be described as the left and right direction.

  The chassis member separating apparatus 20 includes a base 21 having an installation plate 22 on the upper surface, on which an internal unit 30 ′ (see FIG. 1) composed of members other than the optical function filter 3 in the internal unit 30 described above is installed. In the base 21, the heat conduction sheet 6 in the internal unit 30 ′ installed on the upper surface of the installation plate 22 is cut to separate the chassis member 7 and the display panel 5 from each other. A cutting device 23 is provided.

  As shown in FIGS. 2 and 3, the cutting device 23 includes a strip-shaped cutting blade 10 (cutting member) formed in a length longer than at least the short side of the display panel 5 in this embodiment, A plurality (two in this embodiment) for preventing re-adhesion of the cut surfaces of the two by inserting them into the widened portion between the back plate 5b and the chassis member 7 which are cut and partially separated by the cutting blade 10. It is mainly composed of an insertion body (the wedge member 11 is used in this embodiment), and a driving means for moving the cutting blade 10 and the wedge members 11 and 11 in the longitudinal direction of the internal unit 30 ′. Yes.

  The driving means is arranged in the longitudinal direction of the installation plate 22 by the left and right guide rails 24, 24 spaced apart from each other on the left and right long sides of the internal unit 30 ′ on the upper surface of the installation plate 22 and the guide rails 24, 24. Left and right moving bodies 25 and 25 guided reciprocally toward the left and right, left and right drive chains 26 and 26 disposed along the guide rails 24 and 24, and a drive for rotating the drive chains 26 and 26 The motor 27 is mainly configured.

  The left and right moving bodies 25, 25 are connected via connecting rods 28 disposed between the upper parts, and are fixed to predetermined portions of the drive chains 26, 26 via pin members (not shown). With the rotation of the drive chains 26, 26, an initial position on the rear end side of the guide rails 24, 24 (position indicated by a solid line in FIG. 2) and a stop position on the front end side (two-dot chain line in FIG. 2). The position is indicated on the installation plate 22 along the guide rails 24, 24.

  Further, the left and right drive chains 26, 26 are stretched around a plurality of sprockets 29, 29 a that are rotatably provided on the front and rear short sides of the installation plate 22. The sprockets 29 a and 29 a arranged on the left and right sides are connected to each other through a connecting rod 36 so as not to rotate relative to each other. A drive chain 26 a is stretched between the sprocket 29 b fixed to the connecting rod 36 and the drive sprocket 29 c fixed to the drive shaft of the drive motor 27, and the drive sprocket 29 c is rotated by the drive of the drive motor 27. Is transmitted to the drive chains 26, 26 via the drive chain 26 a, sprocket 29 b, connecting rod 36 and a plurality of sprockets 29. That is, the left and right drive chains 26 and 26 are rotated synchronously by one drive motor.

  Attachment members 31, 31 for fixing the cutting blade 10 from both above and below are fixed to the front portions of the left and right moving bodies 25, 25, and both ends are attached to the attachment members 31, 31. The cutting blade 10 is oriented in a direction orthogonal to the cutting direction (the direction indicated by the arrow in FIG. 2) and is supported in a horizontal state, and is formed at an acute angle in the state of being located at the initial position. The cutting edge at the tip is directed to the internal unit 30 'side.

  At the rear position of the cutting blade 10, that is, the position opposite to the cutting direction of the cutting blade 10, the wedge members 11, 11 described above are arranged in a state of being spaced apart by a predetermined distance in the longitudinal width direction of the cutting blade 10. Yes. As shown in FIGS. 3 and 4, the wedge members 11 and 11 are made of a strip-shaped plate material made of, for example, a synthetic resin material, and the upper surface 11 a is an inclined surface that is inclined upward as it goes from the front end to the rear end. The front end is substantially V-shaped in a side view, and the rear end is fixed to the front end of the mounting plates 32, 32 projecting inwardly from the inner surfaces of the left and right moving bodies 25, 25. .

  Specifically, when the wedge members 11 and 11 are attached to the attachment plates 32 and 32, the front ends thereof are close to the rear end surface of the cutting blade 10, and the lower surface 11b is substantially horizontal in the front-rear direction. Placed. That is, the front end faces the cutting blade 10 side, and the rear end extends toward the opposite side with respect to the cutting direction.

  Further, as shown in the enlarged view in FIG. 4, coating layers 33 and 34 having non-adhesive properties are formed on the outer surfaces of the cutting blade 10 and the wedge members 11 and 11 in a thin film shape, respectively. Scrap adhesion is prevented. As an example of the process for forming such a coating layer, for example, the surface of the cutting blade 10 or the wedge members 11 and 11 is blasted (a process of forming irregularities on the surface by spraying a ceramic material or the like with compressed air) ), And then a coating treatment in which a non-adhesive copolymer is applied and baked, and by doing so, the surface irregularities are effectively in contact with the adhesive (heat conductive sheet 6). This reduces the frictional resistance and provides a non-adhesive effect.

  As shown in FIGS. 2 and 3B, the inner surfaces of the left and right moving bodies 25, 25, when the thermal conductive sheet 6 is cut by the cutting blade 10, the solution is passed between the back plate 5 b and the chassis member 7. A plurality of spray nozzles 35 as solution supply means for spraying and supplying between the cut surfaces 6a and 6b (see FIG. 5) are disposed in the front-rear direction. These injection nozzles 35 are disposed horizontally at predetermined intervals between the rear part of the cutting blade 10 on the inner surfaces of the moving bodies 25, 25 and the rear mounting plate 32. The injection port faces obliquely forward so that the solution can be injected from the left and right sides of 30 ′ toward the front cutting part (cutting blade 10 side) (see FIG. 5).

  Each spray nozzle 35 is connected to a solution supply device (not shown) including a tank in which the solution is stored, a supply pump, and the like, and the solution is appropriately supplied from the solution supply device when the heat conductive sheet 6 is cut. It is like that. In the present embodiment, the solution supply apparatus is provided separately from the moving bodies 25 and 25. However, for example, the solution supply apparatus may be provided in the moving bodies 25 and 25.

  Further, in this embodiment, water is applied as a solution. However, if such a solution is used as an oil-based cleaning agent, it functions as a cutting oil and can maintain the sustainability of the cutting blade 10 more. become. Thus, at the time of cutting, the cutting blade 10 and the outer surfaces of the wedge members 11 and 11 are cut off by supplying the solution between the cutting surfaces 6a and 6b of the cut heat conductive sheet 6. Since the solution flows between the cut surfaces 6 a and 6 b of the heat conductive sheet 6, the cut surfaces 6 a and 6 b of the heat conductive sheet 6 after cutting are reattached to the outer surface of the cutting blade 10, or a sticky cut It is possible to suppress scraps from adhering to the cutting blade 10 and maintain the sharpness of the cutting blade 10 for a long time. Therefore, the chassis member 7 can be continuously separated even in a large amount of the plasma display panel 1.

  Next, the separation state of the chassis member 7 and the display panel 5 by the chassis member separating apparatus 20 of the present embodiment configured as described above will be described mainly based on FIGS.

  First, after the internal unit 30 ′ is set at a predetermined position on the upper surface of the installation plate 22 so that the chassis member 7 is positioned below, when a drive switch (not shown) is pressed, the drive motor 27 is driven to move the moving bodies 25, 25. Moves from the initial position in the cutting direction (arrow direction in FIG. 2).

  Along with the movement of the moving bodies 25, 25, the cutting blade 10 first reaches the short side portion of the heat conductive sheet 6 and is inserted into the substantially central portion in the thickness direction, and the right and left injection nozzles with respect to the traveling direction The solution is sprayed from 35 and 35, and the cutting of the heat conductive sheet 6 and the supply of the solution are started (see FIG. 6A).

  When the cutting blade 10 further cuts through the thickness of the heat conductive sheet 6, the wedge members 11, 11 move together with the cutting blade 10 in the cutting direction, and the wedge members 11, 11 are moved by the cutting blade 10. It enters between the upper and lower cut surfaces 6a, 6b of the heat conductive sheet 6 separated vertically by cutting (see FIG. 5). At this time, since the front end side of the wedge member 11 has a tapered shape, the front end portion of the wedge member 11 is reliably inserted between the two even when the separation opening angle between the back plate 5b and the chassis member 7 is small. Is done.

  In particular, the predetermined portion of the cutting surface 6a on the upper side of the heat conductive sheet 6 that is cut and separated by the movement of the cutting blade 10 is a wedge that enters after passing through the cutting blade 10, as shown in FIG. Since it slides on the upper surface 11a of the members 11 and 11 and rides on the upper surface 11a, the cutting surface 6a is not lowered and reattached to the lower cutting surface 6b even when the weight of the display panel 5 is applied. . That is, when the wedge members 11 and 11 enter between the upper and lower cutting surfaces 6a and 6b, the upper and lower cutting surfaces 6a and 6b are held in a state of being separated from each other by a predetermined distance. Re-adhesion is effectively prevented.

  Further, the upper surface 11a of the wedge members 11, 11 is configured to incline toward the cutting surface side and increase in thickness toward the rear end, so that the upper side of the wedge member 11 is increased in the cutting direction. Since the cutting surface 6a is slidably in contact with the upper surface 11a and rolled up, it is more reliably prevented from re-adhering to the cutting surface 6b, and is also cut by the cutting blade 10 in the heat conductive sheet 6. Tension is applied to the cut portion in the separation direction. That is, since the force which tries to cut a cutting part up and down acts, the cutting effect by the cutting blade 10 improves effectively.

  Further, as shown in FIG. 6C, even in the latter stage of cutting when the entire wedge members 11, 11 are completely inserted between the upper and lower cutting surfaces 6a, 6b, the rear portions of the wedge members 11, 11 have a predetermined thickness. Therefore, even if the back plate 5b is slightly lowered, the back plate 5b separated from the rear ends of the wedge members 11 and 11 and the chassis member 7 do not come into contact again.

  And when the moving bodies 25 and 25 reach the stop position, the drive of the drive motor 27 is stopped, the supply of the solution from the injection nozzle 35 is stopped, and the cutting is completed. In this state, the upper display panel 5 can be easily separated upward from the chassis member 7.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the example in which the two wedge members 11 and 11 are disposed at an interval with respect to the longitudinal direction of the cutting blade 10 has been described. However, the number is not limited, and one is 3 Two or more may be provided. The front and rear length of the wedge member 11 is not limited and can be arbitrarily changed. For example, the wedge member 11 preferably has a length that is at least half of the length in the cutting direction of the heat conductive sheet 6. . By increasing the number of wedge members 11, even if the width of the plasma display panel is large, the contact area with the separated display panel is reduced as much as possible, and the cutting load on the cutting member is effectively reduced. It is possible to prevent re-contact between the back plate 5b and the chassis member 7 while reducing.

  In the cutting device 23 of the above embodiment, the wedge members 11 and 11 are configured to move in the cutting direction together with the cutting blade 10 without changing the relative positional relationship with the cutting blade 10. When the cutting member moves a predetermined distance, the wedge member may be configured to move a predetermined distance so as to follow the cutting member, or when the cutting member cuts a predetermined distance without being followed, the separation is performed. It is also possible to sandwich an insert that is not a wedge member between the rear plate 5 b and the chassis member 7.

  Moreover, in the said Example, although the front-end | tip of the wedge members 11 and 11 was arrange | positioned so that it might adjoin to the rear end of the cutting blade 10, it may be arrange | positioned predetermined distance apart.

  Further, the wedge members 11 and 11 of the above-described embodiment are arranged so that the upper surface 11a becomes an inclined surface that is inclined upward as it goes to the rear end, but the inclination that the lower surface 11b is inclined downward as it goes to the rear end. The upper surface 11a and the lower surface 11b may both be inclined surfaces. Furthermore, instead of the wedge member, a flat plate having no inclined surface may be used as an insert between the back plate 5b and the chassis member 7.

  Moreover, in the said Example, the heat conductive sheet 6 is cut | disconnected by moving the cutting blade 10 and the wedge members 11 and 11 toward a cutting direction in the state which installed and fixed internal unit 30 'on the installation board 22 upper surface. However, in the present invention, for example, the cutting blade 10 and the wedge members 11 and 11 are installed and fixed on the installation plate 22, and the internal unit 30 'is moved to move the heat conduction sheet. 6 may be cut and separated.

  Moreover, in the said Example, it was comprised so that the cutting blade 10 may be cut and advanced in the state parallel to the short side of the display panel 5, but you may make it cut and advance from the long side of the display panel 5, or a cutting | disconnection. For example, the blade 10 may be cut in an oblique direction (for example, 45 degrees) with respect to the display panel 5 so that the relative movement direction of the blade 10 with respect to the display panel 5 has a predetermined angle. In this way, the cutting load of the cutting blade 10 can be reduced as much as possible in the initial cutting of the heat conductive sheet 6. Further, in the middle stage of cutting, even if the cutting load increases due to an increase in the cutting surface, it is possible to efficiently and continuously cut along with the cooling action of the solution.

  Moreover, although the cutting device 23 of the said Example cut | disconnects only by making the cutting blade 10 approach into the thickness of the heat conductive sheet 6, in this invention, for example, the cutting blade 10 is made long. The cutting blade 10 may be moved in the cutting direction while reciprocating toward the direction, or alternatively, the cutting blade 10 is moved in a circular direction or linearly moving back and forth in the horizontal direction to alternately repeat between the cutting position and the cutting retreat position. It may be moved in the cutting direction while being moved.

  Moreover, in the said Example, although the cutting blade 10 in which a blade part makes an acute angle was applied as a cutting member, For example, you may apply a saw blade, a heating wire, etc. as a cutting member.

  Moreover, in the said Example, although the solution supplied to the outer surface of the cutting blade 10 and the wedge members 11 and 11 was supplied toward the inside from the side of internal unit 30 ', this invention is However, the present invention is not limited to this. For example, if the solution can be supplied almost continuously to the outer surfaces of the cutting blade 10 and the wedge members 11 and 11 during cutting, the cutting blade 10 can be supplied from the inside of the cutting blade 10, for example. It is good also as a structure which discharges a solution toward the 10 outer surface.

  In the above-described embodiment, the non-adhesive layer is described as being coated on the outer surfaces of the cutting blade 10 and the wedge member 11, but the non-adhesive layer is coated only on one side of the cutting blade 10 or the wedge member 11. However, it is possible to obtain an appropriate effect that the adhesive member is not easily attached.

It is a disassembled perspective view which shows the plasma display panel to which this invention is applied. It is a perspective view which shows the whole image of the chassis member separation apparatus as an Example of this invention. (A) is AA sectional drawing of FIG. 2, (b) is a top view which shows the chassis member separation apparatus of (a). It is a longitudinal cross-sectional view which shows a cutting blade and a wedge member. It is a principal part expanded sectional view which shows the cutting | disconnection condition of the heat conductive sheet with a cutting blade. (A)-(c) is a schematic sectional drawing which shows the cutting | disconnection condition of the heat conductive sheet with a cutting blade.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plasma display panel 2 Front case part 3 Optical function filter 5 Display panel 5a Front plate (display side glass substrate)
5b Back plate (Back side glass substrate)
6 Thermal conductive sheet (adhesive member)
6a, 6b Cutting surface 7 Chassis member (heat dissipation holding plate)
8 Back case part 9 Sealing material 10 Cutting blade (cutting member)
11 Wedge member 11a Upper surface 11b Lower surface 20 Chassis member separating device (Heat radiating holding plate separating device)
21 installation base 22 installation plate 23 cutting device 24 guide rail 25 moving body 26, 26a drive chain 27 drive motor 28 connecting rod 29, 29a-29c sprocket 30, 30 'internal unit 31 attachment member 32 attachment plate 33, 34 coating layer ( Non-adhesive layer)
35 Injection nozzle (solution supply means)
36 connecting rod

Claims (6)

A plasma display panel comprising a display panel comprising a display side glass substrate and a back side glass substrate having a discharge space formed therein, and a heat dissipation holding plate fixed to the back side glass substrate via an adhesive member In the plasma display panel heat radiation holding plate separating apparatus, the cutting member is brought into contact with the adhesive member and moved relative to the display panel while the adhesive member is cut to separate the heat radiation holding plate from the display panel. There,
An insert inserted behind the cutting member and inserted into the expanded portion of the rear glass substrate separated from the cutting member by the cutting member and the heat radiating holding plate is moved relative to the display panel together with the cutting member. A heat dissipating holding plate separating device for a plasma display panel.   The heat dissipating holding plate separating apparatus for a plasma display panel according to claim 1, wherein the insert is configured by a wedge member whose thickness gradually decreases in a cutting direction of the cutting member.   The heat dissipating holding plate separating apparatus for a plasma display panel according to claim 1 or 2, wherein a plurality of the inserts are formed in an elongated band shape, and a plurality of the inserts are arranged at predetermined intervals in the longitudinal direction of the cutting member.   A display panel having a heat dissipation holding plate fixed via the adhesive member is installed on an installation table, and the movable body on which the cutting member and the insertion body are integrally attached is cut on the installation table. The heat-dissipating holding plate separating apparatus for a plasma display panel according to any one of claims 1 to 3, which is provided so as to be movable in a cutting direction of the member.   The plasma display panel according to any one of claims 1 to 4, wherein a non-adhesive layer for reducing adhesiveness to the adhesive member is formed on an outer surface of at least one of the cutting member or the insert. Heat release holding plate separator.   The plasma display panel heat-retaining holding device according to any one of claims 1 to 5, further comprising solution supply means for supplying a solution substantially continuously to the outer surface of the cutting member and the insert during the cutting of the adhesive member. Board separator.

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