JP4169644B2 - Pallet for aging plasma display panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pallet used when aging a PDP (plasma display panel).
[0002]
[Prior art]
First, FIG. 8 shows a structure of a general AC type PDP 100. According to this, a plurality of display electrodes 101 and display electrodes 102 which are paired with each other are formed on the front glass substrate 103. These display electrodes 101 and 102 include a transparent electrode and a bus electrode for preventing a voltage drop due to the electrical resistance of the transparent electrode. Each of the display electrodes 101 and 102 is covered with a dielectric layer 104 and further covered with an MgO protective film 105.
[0003]
On the other hand, a plurality of stripe-shaped address electrodes 107 are formed on the rear glass substrate 106. The address electrode 107 is covered with a dielectric layer 108, and a plurality of ribs 109 are formed adjacent to the address electrode 107. Each of these ribs 109 functions to cut off the influence on adjacent cells during address discharge and prevent light crosstalk.
[0004]
Each of the ribs 109 is coated with red, blue, and green phosphors 110 so as to cover the address electrodes 107. The front glass substrate 103 and the rear glass substrate 106 are combined while maintaining a certain gap, and the periphery is sealed with sealing glass.
[0005]
In the manufacturing process of the PDP 100, the PDP 100 is evacuated while being heated through the discharge gas vent provided on the rear glass substrate 106 (exhaust process). In this evacuation process, moisture, hydrocarbons, oxygen, and the like adsorbed on the surfaces of the rib 109, phosphor 110, MgO protective film 105, etc. in the sealed discharge space inside the PDP 100 are desorbed by heating and evacuated. This is done for the purpose of removing it outside the PDP 100. At this time, the temperature of the PDP 100 is raised to about 300 ° C. in advance, and the inside is evacuated using an evacuation apparatus. After the inside of the PDP 100 has a sufficient degree of vacuum, a discharge gas mainly composed of an inert gas such as Ne is sealed (gas sealing step), and the discharge gas vent is closed (sealing step).
[0006]
In the PDP 100 manufactured through such a process, a large amount of impurities are generated from the inside of the PDP 100 in the initial stage of lighting, even if exhaust is sufficiently performed in the exhaust process described above. This impurity deteriorates the purity of the discharge gas in the discharge space, causes deterioration of the characteristics of the PDP 100 and destabilizes the operation.
[0007]
In order to suppress the generation of such impurities, aging is performed to turn on all cells of the PDP 100 for a predetermined time (aging process). Impurities released from the discharge region by aging are diffused outside the discharge region and are adsorbed by the MgO protective film 105 and the like in the non-discharge region. As a result, the discharge region is in a purified state, and it is possible to suppress characteristic deterioration and unstable operation of the PDP 100. The aging of the AC type PDP 100 is generally performed by applying a voltage between the display electrodes 101 and 102 provided on the front glass substrate 103 to cause discharge in all discharge cells. Since the heat generated at this time is larger than that in the case of displaying a normal image or the like, the temperature variation in the PDP 100 becomes very large and panel cracks occur. In order to eliminate this panel crack, it is necessary to cool the PDP 100 to suppress temperature variations.
[0008]
As one of the methods for suppressing the temperature variation during the aging of the PDP 100 as described above, conventionally, an aging pallet 120 as shown in FIG. 9 has been used. That is, the pallet 120 includes a base plate 121 and a heat radiating plate 122 attached and fixed on the base plate 121. The heat radiating plate 122 includes an aluminum plate 123 provided on the base plate 121, a heat conductive sheet 124 bonded on the aluminum plate 123, and an aluminum foil 125 bonded on the heat conductive sheet 124. It is configured.
[0009]
The base plate 121 is a portion that fixes an electrode for supplying electricity to the heat radiating plate 122 and the PDP 100 and is in contact with a conveyor when the PDP 100 is conveyed.
[0010]
According to this, during aging, the PDP 100 was placed on and closely adhered to the heat sink 122, and in this state, the PDP 100 and the heat sink 122 were cooled by a fan. At this time, the thermal conductive sheet 124 plays a role of making temperature variation of the PDP 100 uniform, and the aluminum foil 125 makes the electric charge on the surface of the heat radiating plate 122 uniform and stabilizes the discharge, and the PDP 100 has a thermal conductive sheet. 124 is prevented from adhering.
[0011]
In addition, the method of performing aging using the heat sink comprised by the aluminum plate, the heat conductive sheet, and aluminum foil as mentioned above is described in the following patent document 1, for example.
[0012]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-231139
[Problems to be solved by the invention]
However, in the conventional configuration, the PDP 100 has a different size (size) for each model. For example, as shown in FIGS. 10 (a), (b), and (c), the smallest A size and medium size If there is a plurality of types of PDP 100 such as the B size and the largest C size, a plurality of types of pallets 120 in which a heat radiating plate 122 matching the size of the PDP 100 is attached to a base plate 121 are prepared, or a heat radiating plate It was necessary to replace the entire 122 in accordance with the model of the PDP 100. For this reason, conventionally, since the types of the pallet 120 and the heat radiating plate 122 are increased, there is a problem that the cost for the aging equipment is increased.
[0014]
In addition, since a plurality of types of heat radiating plates 122 having different sizes are necessary, there is a problem that a storage space for the heat radiating plate 122 before being attached to the base plate 121 is increased.
[0015]
An object of the present invention is to provide a pallet for aging of a PDP that can reduce the cost of aging equipment and can reduce the storage space for a heat sink.
[0016]
[Means for Solving the Problems]
To achieve the above object, the present first invention is a pallet for aging used in the aging device to light all the discharge cells of the display portion of the plasma display panel, in contact with the glass substrate of the plasma display panel heat sink consists of a common plate radiator was Align the size of the plasma display panel of a particular type, and mounted removable auxiliary radiator plate that have a same structure as the common plate radiator, for the auxiliary by removing or mounting the heat radiating plate, the size can be changed in accordance with the size of the aged is a plasma display panel der of the heat sink is, the peripheral portion of the common heat radiation plate and the the peripheral portion of the auxiliary heat sinks a shall have been vertically formed with respect to the upper surface of the base plate of the pallet for aging.
[0017]
According to this, when aging a plasma display panel of a specific model, the plasma display panel is placed on a heat sink composed only of a common heat sink with the auxiliary heat sink removed. In the case of aging of the plasma display panel of a large model than the plasma display panel of the particular model, according to the size of the plasma display panel of the large model, and the auxiliary radiating plate were not next to a common plate radiator mounting The plasma display panel is placed on a heat sink composed of the common heat sink and the auxiliary heat sink.
[0018]
Thus, when performing aging by removal attaching the plasma display auxiliary plate radiator according to the size of the panel, it is possible to change the size of the heat radiating plate, a plurality of models having different sizes plasma A common heat sink may be used in common with the display panel , and one type of pallet provided with the common heat sink may be prepared. As a result, the types of aging pallets can be integrated and reduced compared to the conventional one, and the cost for aging equipment can be reduced accordingly, and the storage space for the heat sink can also be reduced. it can.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is used about the same component as the conventional thing demonstrated previously, and description is abbreviate | omitted.
(Embodiment 1)
FIGS. 1-4 is a block diagram of the pallet 11 for aging of PDP100 in Embodiment 1 of this invention.
[0022]
The PDP 100 has a different size (size) for each model. For example, as shown in FIG. 4A, the smallest A size (an example of a specific model) produced and as shown in FIG. There are a plurality of types of PDPs 100 such as a medium B size and the largest C size as shown in FIG.
[0023]
The pallet 11 includes a heat radiating plate 12 in contact with the back glass substrate 106 of the PDP 100 and a base plate 16 that supports the heat radiating plate 12 from below. The heat radiating plate 12 includes a rectangular common heat radiating plate 13 that matches the size of the A-size PDP 100 and a plurality of auxiliary heat radiating plates 14 a to 14 d and 15 a to 15 d adjacent to the periphery of the common heat radiating plate 13. It consists of and.
[0024]
Among these, as shown in FIG. 1 and FIG. 4 (b), the first to fourth auxiliary heat sinks 14a to 14d are for B size, and the first auxiliary heat sink 14a and the second auxiliary heat sink 14a. The auxiliary heat sink 14b is adjacent to the pair of short sides of the common heat sink 13, and the third auxiliary heat sink 14c and the fourth auxiliary heat sink 14d are adjacent to the pair of long sides. As described above, when the B size first to fourth auxiliary heat sinks 14a to 14d are adjacent to the peripheral edge of the common heat sink 13, a rectangular shape matching the size of the B size PDP 100 is obtained. A heat sink 12 is formed.
[0025]
Similarly, as shown in FIG. 2 and FIG. 4C, the first to fourth auxiliary heat sinks 15a to 15d are for C size, and the first auxiliary heat sink 15a and the second auxiliary heat sink 15a The auxiliary heat sink 15b is adjacent to the pair of short sides of the common heat sink 13, and the third auxiliary heat sink 15c and the fourth auxiliary heat sink 15d are adjacent to the pair of long sides. As described above, when the C size first to fourth auxiliary heat sinks 15a to 15d are adjacent to the peripheral edge of the common heat sink 13, a rectangular shape matching the size of the C size PDP 100 is obtained. A heat sink 12 is formed.
[0026]
The common heat radiating plate 13 and the auxiliary heat radiating plates 14a to 14d and 15a to 15d are each composed of an aluminum plate 123, a heat conductive sheet 124, and an aluminum foil 125, as in the prior art.
[0027]
Further, the joint surface S 1 at the peripheral edge of the common heat sink 13 and the joint surfaces S 2 of the auxiliary heat sinks 14 a to 14 d and 15 a to 15 d are formed in the vertical direction with respect to the upper surface of the base plate 16.
[0028]
The common heat sink 13 is attached and fixed to the base plate 16 by a plurality of screws 17. The auxiliary heat sinks 14a to 14d and 15a to 15d are configured to be freely attached to and detached from the base plate 16 by a plurality of screws 18, respectively. That is, a plurality of angle-shaped mounting frames 19 are provided on the side surface opposite to the joint surface S2 of each of the auxiliary heat sinks 14a to 14d, 15a to 15d, and these mounting frames 19 have through holes. 20 is formed. Further, on the upper surface of the base plate 16, a plurality of B-sizes corresponding to the through holes 20 of the mounting frames 19 of the B-size auxiliary heat-radiating plates 14 a to 14 d arranged adjacent to the common heat-radiating plate 13. Screw holes 21 and a plurality of C size screw holes 22 coinciding with the through holes 20 of the attachment frames 19 of the C size auxiliary heat sinks 15a to 15d arranged adjacent to the common heat sink 13 Is formed.
[0029]
Hereinafter, the operation of the above configuration will be described.
As shown in FIG. 3 and FIG. 4A, when aging the A-size PDP 100, the auxiliary heat sinks 14a to 14d and 15a to 15d are removed from the base plate 16, and only the common heat sink 13 is used. An A-size PDP 100 is placed on the heat radiating plate 12 so that the rear glass substrate 106 is in contact therewith. As a result, the heat generated when aging is performed to turn on all discharge cells of the A size PDP 100 is dissipated through the heat radiating plate 12 composed only of the common heat radiating plate 13. The PDP 100 is cooled to suppress temperature variations.
[0030]
As shown in FIGS. 1 and 4B, when aging the B-size PDP 100, the B-size first to fourth auxiliary heat-radiating plates 14 a to 14 d are disposed around the common heat-radiating plate 13. Arranged adjacently, the attachment frame 19 of each auxiliary heat sink 14a to 14d in a state where each joint surface S1 of the common heat sink 13 and the joint surface S2 of each auxiliary heat sink 14a to 14d are joined. The through hole 20 is matched with the B size screw hole 21 of the base plate 16, and the screw 18 is inserted into the through hole 20 and tightened into the screw hole 21.
[0031]
As a result, the auxiliary heat sinks 14a to 14d are mounted and fixed on the base plate 16, and the square heat sink 12 suitable for the size of the B size PDP 100 is replaced with the common heat sink 13 and the B size auxiliary holes. It is comprised with heat sink 14a-14d. A B-size PDP 100 is placed on the heat radiating plate 12 thus formed so that the rear glass substrate 106 is in contact therewith. As a result, the heat generated when the aging for lighting all the discharge cells of the B size PDP 100 is performed through the heat radiating plate 12 constituted by the common heat radiating plate 13 and the auxiliary heat radiating plates 14a to 14d. Therefore, the B-size PDP 100 is cooled and temperature variations are suppressed.
[0032]
Similarly, as shown in FIGS. 2 and 4C, when aging the C-size PDP 100, the C-size first to fourth auxiliary heat-radiating plates 15 a to 15 d are disposed around the common heat-radiating plate 13. Are installed adjacent to each other, and the joining frames S1 of the common heat sink 13 and the joint surfaces S2 of the auxiliary heat sinks 15a to 15d are joined to each other. The 19 through holes 20 are aligned with the C size screw holes 22 of the base plate 16, and the screws 18 are inserted into the through holes 20 and tightened into the screw holes 22.
[0033]
As a result, the auxiliary heat sinks 15a to 15d are mounted and fixed on the base plate 16, and the square heat sink 12 suitable for the size of the C size PDP 100 is replaced with the common heat sink 13 and the C size auxiliary holes. It is comprised with the heat sink 15a-15d. The C-size PDP 100 is placed on the heat radiating plate 12 thus formed so that the rear glass substrate 106 is in contact therewith. As a result, the heat generated when the aging for lighting all the discharge cells of the C size PDP 100 is performed through the heat radiating plate 12 constituted by the common heat radiating plate 13 and the auxiliary heat radiating plates 15a to 15d. Therefore, the C-size PDP 100 is cooled and temperature variations are suppressed.
[0034]
Thus, when performing aging, the size of the heat sink 12 is changed to the A size to C size PDP 100 by attaching and removing various auxiliary heat sinks 14a to 14d and 15a to 15d according to the size of the PDP 100. Can be changed accordingly. Therefore, if the common heat sink 13 is commonly used for the A size to C size PDPs 100 having different sizes, and one type of pallet 11 having the common heat sink 13 on the base plate 16 is prepared. Good. As a result, four auxiliary heat sinks per model, excluding the minimum size (A size) PDP100, without having the heatsink 12 in proportion to the size of the PDP 100 for all production models (A size to C size) 14a to 14d and 15a to 15d may be provided, and the cost for the aging equipment can be reduced and the storage space for the heat sink 12 can be reduced.
(Embodiment 2)
In the first embodiment described above, as shown in FIG. 4B, four B-size auxiliary radiator plates 14 a to 14 d are arranged adjacent to the four peripheral edges of the common radiator plate 13. As shown in FIG. 5 (b), by arranging two B-size auxiliary heat sinks 14e and 14f adjacent to the long and short sides of the common heat sink 13 in accordance with the B-size PDP 100, A heat radiating plate 12 having a predetermined size is formed.
[0035]
Similarly, as shown in FIG. 5C, two C-size auxiliary heat sinks 15e and 15f are arranged adjacent to the long and short sides of the common heat sink 13 so that a C-size PDP 100 is provided. A heat radiating plate 12 having a size corresponding to the above is formed.
[0036]
According to this, since the number of the various auxiliary heat sinks 14e, 14f, 15e, and 15f is halved compared to that of the first embodiment, the replacement when the auxiliary heat sinks 14e, 14f, 15e, and 15f are attached and removed is replaced. Time can be shortened.
(Embodiment 3)
In the first embodiment described above, as shown in FIGS. 1 and 2, each joint surface S1 of the common heat sink 13 and the joint surfaces S2 of the various auxiliary heat sinks 14a to 14d and 15a to 15d are joined together. Although formed perpendicular to the upper surface of the base plate 16, as the third embodiment, the joint surfaces S 1 and S 2 may be formed obliquely with respect to the upper surface of the base plate 16 as shown in FIG.
[0037]
According to this, by forming the joint surfaces S1 and S2 obliquely, the contact area between the common heat sink 13 and the various auxiliary heat sinks 14a to 14d and 15a to 15d is larger than when formed in the vertical direction. Increases contactability. Therefore, the temperature difference between the common heat sink 13 and the various auxiliary heat sinks 14a to 14d and 15a to 15d is reduced, and the temperature between the common heat sink 13 and the various auxiliary heat sinks 14a to 14d and 15a to 15d is reduced. Is made uniform. Thereby, it can prevent that a temperature difference arises in PDP100 in aging and a crack generate | occur | produces.
(Embodiment 4)
In the first embodiment described above, as shown in FIGS. 1 and 2, the joining surfaces S1 and S2 are formed perpendicular to the upper surface of the base plate 16, but as a fourth embodiment, as shown in FIG. In addition, the joint surfaces S1 and S2 may be formed in a stepped shape including a portion perpendicular to the upper surface of the base plate 16 and a horizontal portion.
[0038]
According to this, by forming the joint surfaces S1 and S2 in a stepped manner, the common heat sink 13 and the various types of the heat sinks 13 and the common heat exchanger are equivalent to the contact area of the horizontal portion of the joint surfaces S1 and S2 as compared with the case where they are formed in the vertical direction. The contact area with auxiliary heat sinks 14a to 14d and 15a to 15d is increased, and the contact property is improved. Therefore, the temperature difference between the common heat sink 13 and the various auxiliary heat sinks 14a to 14d and 15a to 15d is reduced, and the temperature between the common heat sink 13 and the various auxiliary heat sinks 14a to 14d and 15a to 15d is reduced. Is made uniform. Thereby, it can prevent that a temperature difference arises in PDP100 in aging and a crack generate | occur | produces.
[0039]
In addition, the advantage that the joint surfaces S1 and S2 are formed stepwise as shown in FIG. 7 is easier to process in dimension than the case where the joint surfaces S1 and S2 are formed obliquely as in the third embodiment (see FIG. 6). There is also.
[0040]
In each of the above-described embodiments, the case of aging three types (A to C size) of PDPs 100 having different sizes has been described. However, the present invention is not limited to three types, and two types or four or more types of PDPs 100 are aged. The same applies to the case.
[0041]
【The invention's effect】
As described above, according to the present invention, when performing aging, the size of the heat sink can be changed by attaching and removing the auxiliary heat sink according to the size of the PDP (plasma display panel). A common heat sink may be used in common for a plurality of types of plasma display panels of different sizes, and one type of pallet provided with the common heat sink may be prepared. As a result, the types of aging pallets can be integrated and reduced compared to the conventional one, and the cost for aging equipment can be reduced accordingly, and the storage space for the heat sink can also be reduced. it can.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a PDP aging pallet according to a first embodiment of the present invention, showing a case of aging a B-size PDP.
FIG. 2 is a cross-sectional view of the pallet, showing a case of aging a C-size PDP.
FIG. 3 is a cross-sectional view of the pallet showing the case of aging an A-size PDP.
4 is a plan view of a PDP and a pallet, wherein (a) shows an A size PDP and a corresponding pallet, and (b) shows a B size PDP and a corresponding pallet. FIG. , (C) shows a C size PDP and a palette corresponding thereto.
FIGS. 5A and 5B are plan views of a PDP and a pallet according to a second embodiment of the present invention, where FIG. 5A shows an A size PDP and a corresponding pallet, and FIG. 5B shows a B size PDP; (C) shows a C-size PDP and a corresponding palette.
FIG. 6 is a partially enlarged cross-sectional view of a pallet according to a third embodiment of the present invention, in which a joint surface between a common heat sink and an auxiliary heat sink is formed obliquely.
FIG. 7 is a partially enlarged cross-sectional view of a pallet according to a fourth embodiment of the present invention, in which a joint surface between a common heat sink and an auxiliary heat sink is formed in a stepped shape.
FIG. 8 is a perspective view showing a configuration of a conventional PDP.
FIG. 9 is a cross-sectional view of a conventional PDP aging pallet.
FIG. 10 is a plan view of a PDP and a pallet, in which (a) shows an A size PDP and a corresponding pallet, and (b) shows a B size PDP and a corresponding pallet; , (C) shows a C size PDP and a palette corresponding thereto.
[Explanation of symbols]
11 Pallet 12 Heatsink 13 Common heatsink 14a-14f Auxiliary heatsink 15a-15f Auxiliary heatsink 100 Plasma display panel 103, 106 Glass substrate S1, S2 Bonding surface

Claims (1)

A pallet for aging used in the aging device to light all the discharge cells of the display portion of the plasma display panel,
Radiating plate in contact with the glass substrate of the plasma display panel, a common heat radiating plate were Align the size of the plasma display panel of a particular type, mounted removable auxiliary radiator that have a same structure as the common plate radiator A board,
The installation and removal of the auxiliary heat sink changeable der in accordance with the size of the plasma display panel is aged the size of the heat sink is, the peripheral edge of the auxiliary radiator plate and the peripheral portion of the common plate radiator part a pallet for aging a plasma display panel, wherein that you have been vertically formed with respect to the upper surface of the base plate of the pallet for aging.

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