JP4810771B2 - Plasma display device and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plasma display device known as a thin, lightweight display device having a large screen and a method for manufacturing the same.
[0002]
[Prior art]
In this plasma display device, an ultraviolet ray is generated by gas discharge, and a phosphor is excited by the ultraviolet ray to emit light to perform color display. And the display cell divided by the partition on the board | substrate is provided, and it has the structure by which the fluorescent substance layer is formed in this.
[0003]
This plasma display device is roughly classified into an AC type and a DC type in terms of driving, and there are two types of discharge types: a surface discharge type and a counter discharge type, but high definition, large screen, and simple manufacturing are possible. Therefore, at present, the mainstream of plasma display devices is a surface discharge type of a three-electrode structure, and the structure has a pair of display electrodes adjacent in parallel on one substrate, and on the other substrate. It has an address electrode arranged in a direction intersecting with the display electrode, a partition wall, and a phosphor layer. The phosphor layer can be made relatively thick and is suitable for color display using a phosphor.
[0004]
Such a plasma display device can display at a higher speed than a liquid crystal panel, has a wide viewing angle, is easy to enlarge, and is self-luminous so that the display quality is high. Recently, the flat panel display has attracted particular attention and is used for various purposes as a display device in a place where many people gather and a display device for enjoying a large screen image at home.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to make it possible to extract electrodes from a panel with good workability in such a plasma display device.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a panel in which a plurality of electrode lead portions connected to an electrode group are divided into a plurality of blocks with a predetermined number as one unit at an end of a substrate, and the electrode lead of the panel A wiring pattern connected to a portion and arranged corresponding to a plurality of blocks of the electrode lead-out portion, and having a plurality of wiring boards fixed to an end portion of the substrate by an adhesive, and the adhesive is In the portion between the wiring boards of the substrate, it is applied to a portion inside the end portion where the wiring board is fixed.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
That is, according to the first aspect of the present invention, a plurality of electrode groups are disposed on a pair of substrates opposed to each other so that a discharge space is formed between the substrates, and connected to the electrode groups at the end of the substrate. A panel having a plurality of electrode lead portions divided into a plurality of blocks with a predetermined number as one unit and a wiring pattern connected to the electrode lead portions of the panel, and corresponding to the plurality of blocks of the electrode lead portions And a plurality of wiring boards fixed to the end portion of the substrate by an adhesive, and the adhesive is inside the end portion where the wiring board is fixed in a portion between the wiring boards of the substrate It is applied to the part of.
[0008]
According to a second aspect of the present invention, a plurality of electrode groups are arranged on a pair of substrates opposed to each other so that a discharge space is formed between the substrates, and the electrode groups are arranged at the ends of the substrates. A panel having a plurality of connected electrode lead portions divided into a plurality of blocks with a predetermined number as one unit, and a wiring pattern connected to the electrode lead portions of the panel, and a plurality of blocks of the electrode lead portions A plurality of wiring boards that are arranged correspondingly and fixed to the end of the substrate by an adhesive, and after connecting the wiring board to the electrode lead-out portion of the panel, the adhesive is connected to the wiring board and the substrate In the manufacturing method , the coating pattern is changed so that the coating is applied to a portion inside the end portion where the wiring board is disposed in the portion between the wiring boards of the substrate .
[0010]
Hereinafter, a plasma display device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8, but the embodiment of the present invention is not limited thereto.
[0011]
First, the structure of the plasma display panel in the plasma display device will be described with reference to FIG. As shown in FIG. 1, on a transparent front substrate 1 such as a glass substrate, a plurality of stripe-shaped display electrodes 2 paired with a scan electrode and a sustain electrode are formed, and covers the electrode group. Thus, the dielectric layer 3 is formed, and the protective film 4 is formed on the dielectric layer 3.
[0012]
Further, a plurality of rows of stripes covered with an overcoat layer 6 are formed on the rear substrate 5 opposite to the front substrate 1 so as to intersect the display electrodes 2 of the scan electrodes and the sustain electrodes. Address electrodes 7 are formed. On the overcoat layer 6 between the address electrodes 7, a plurality of barrier ribs 8 are arranged in parallel with the address electrodes 7, and a phosphor layer 9 is provided on the side surface between the barrier ribs 8 and on the surface of the overcoat layer 6. Yes.
[0013]
The substrate 1 and the substrate 5 are opposed to each other with a minute discharge space so that the display electrode 2 and the address electrode 7 of the scan electrode and the sustain electrode are almost orthogonal to each other, and the periphery is sealed, In the discharge space, one or a mixed gas of helium, neon, argon, and xenon is sealed as a discharge gas. Further, the discharge space is divided into a plurality of sections by partition walls 8 to provide a plurality of discharge cells where the intersections of the display electrodes 2 and the address electrodes 7 are located, and each of the discharge cells has red, green and blue colors. The phosphor layers 9 are sequentially arranged one by one so that
[0014]
FIG. 2 shows an electrode arrangement of the plasma display panel. As shown in FIG. 2, the scan electrode, the sustain electrode, and the address electrode have a matrix configuration of M rows × N columns, and M rows are arranged in the row direction. Scan electrodes SCN1 to SCNM and sustain electrodes SUS1 to SUSM are arranged, and N columns of address electrodes D1 to DN are arranged in the column direction.
[0015]
In the plasma display panel having such an electrode configuration, an address pulse is applied between the address electrode and the scan electrode by applying a write pulse between the address electrode and the scan electrode, and after selecting the discharge cell, the scan electrode By applying a periodic sustain pulse that is alternately inverted between the sustain electrode and the sustain electrode, a sustain discharge is performed between the scan electrode and the sustain electrode, and a predetermined display is performed.
[0016]
FIG. 3 shows an example of the overall configuration of a plasma display device incorporating the panel having the structure described above. In the figure, a housing for housing the panel 10 is composed of a front frame 11 and a metal back cover 12, and an opening of the front frame 11 is made of a glass or the like that also serves as an optical filter and panel 10 protection. A cover 13 is arranged. Further, the front cover 13 is subjected to, for example, silver vapor deposition in order to suppress unnecessary radiation of electromagnetic waves. Further, the back cover 12 is provided with a plurality of ventilation holes 12a for releasing heat generated in the panel 10 and the like to the outside.
[0017]
The panel 10 is held by adhering to the front surface of a chassis member 14 made of aluminum or the like via a heat conductive sheet 15, and a plurality of circuits for driving the panel 10 on the rear surface side of the chassis member 14. A block 16 is attached. The heat conductive sheet 15 is for efficiently transferring the heat generated in the panel 10 to the chassis member 14 to radiate heat. Further, the circuit block 16 includes an electric circuit for performing display driving of the panel 10 and its control, and the electrode lead-out portion led out to the edge portion of the panel 10 extends beyond the four edge portions of the chassis member 14. They are electrically connected by a plurality of extending flexible wiring boards (not shown).
[0018]
Further, a boss portion 14a for attaching the circuit block 16 or fixing the back cover 12 is protruded from the rear surface of the chassis member 14 by integral molding using die casting or the like. The chassis member 14 may be configured by fixing a fixing pin to an aluminum flat plate.
[0019]
FIG. 4 is a plan view showing the internal arrangement structure of the plasma display device having such a structure with the back cover 12 removed, and in FIG. 4, the scan driver circuit block 20 applies a predetermined signal voltage to the scan electrodes of the panel 10. The sustain driver circuit block 21 supplies a predetermined signal voltage to the sustain electrode of the panel 10, and the address driver circuit block 22 supplies a predetermined signal voltage to the address electrode of the panel 10. The scan driver circuit block 20 The sustain driver circuit blocks 21 are disposed at both ends of the chassis member 14 in the width direction, and the address driver circuit blocks 22 are disposed at the upper end and the lower end of the chassis member 14 in the height direction.
[0020]
The control circuit block 23 displays image data on the basis of a video signal sent from an input signal circuit block 24 having an input terminal portion to which a connection cable for connecting to an external device such as a television tuner is detachably connected. An image data signal corresponding to the number of pixels of 10 is converted and supplied to the address driver circuit block 22, and a discharge control timing signal is generated and supplied to the scan driver circuit block 20 and the sustain driver circuit block 21, respectively. It performs display drive control such as control, and is disposed at substantially the center of the chassis member 14.
[0021]
The power supply block 25 supplies a voltage to each of the circuit blocks. Like the control circuit block 23, the power supply block 25 is disposed at a substantially central portion of the chassis member 14 and includes a connector 26 to which a power supply cable (not shown) is attached. The commercial power supply voltage is supplied through the power input block 27 having the power supply.
[0022]
The bracket 28 is attached to the stand pole, and is attached to the position of the lower end portion of the chassis member 14 in the height direction. The tip of the stand pole attached to the stationary stand is inserted into the hole of the bracket 28, and the stand pole is fixed to the bracket 28 with a screw or the like, so that the stand is attached, and thus the panel is held upright. It will be.
[0023]
A flexible wiring board 29 as a wiring board connects a plurality of scan electrodes, which are electrode groups of the panel 10, electrode lead portions of the sustain electrodes, and the printed wiring boards of the scan driver circuit block 20 and the sustain driver circuit block 21. Similarly, a flexible wiring board 30 as a wiring board connects an electrode lead-out portion of a plurality of address electrodes of the panel 10 and a printed wiring board of the address driver circuit block 22, and passes through the outer peripheral portion of the panel 10 to the rear side from the front side. It is arranged to be bent 180 degrees to the side.
[0024]
The flexible wiring boards 29 and 30 are formed by forming a plurality of wiring patterns made of a copper foil or the like connected to an electrode group on a resin base film having insulation and flexibility such as a polyimide film. In this structure, only the connection portion is exposed and the other wiring pattern portion is covered with a resin cover film such as polyimide.
[0025]
Further, as described above, the panel 10 has a structure in which a plurality of electrode groups of a scan electrode, a sustain electrode, and an address electrode are arranged on a pair of substrates 1 and 5 that are arranged so as to form a discharge space between the substrates. is doing. As shown in FIG. 5, the electrode lead portion 31 connected to the electrode group is divided into a plurality of blocks with a predetermined number as one unit, and is drawn and arranged so as to be exposed at the end portions of the substrates 1 and 5. ing.
[0026]
The flexible wiring boards 29 and 30 are arranged corresponding to the plurality of blocks of the electrode lead-out portion 31, and the wiring patterns of the flexible wiring boards 29 and 30 are connected to the electrode lead-out portion 31, and further the substrate The flexible wiring boards 29 and 30 are fixed to the end portions 1 and 5 by an adhesive 32 made of a photo-curing resin as shown in FIG. 6 in order to ensure the airtightness and adhesion of the connecting portion. 5 and 6 show an example in which the flexible wiring board 29 is connected to the electrode lead portion 31 of the electrode group on the scan electrode / sustain electrode side.
[0027]
By the way, when apply | coating the adhesive material 32 to the boundary part of the board | substrate 5 and the flexible wiring board 29 so that the connection part with the electrode extraction part 31 of the board | substrate 1 of the flexible wiring board 29 may be covered, it is from the nozzle of an adhesive material coating device. It is applied to the substrate by moving the nozzle while discharging the adhesive, but when it is applied linearly to the end of the substrate 1 as shown in FIG. 7, it adheres to the portion where the flexible wiring board 29 does not exist. The material 32 hangs down from the end portion of the substrate 1, and an operation for removing the adhesive material 32 attached to the substrate 1 later becomes necessary. Moreover, the dripping adhesive material 32 adheres to the coating device or the like, and the device must be wiped later.
[0028]
In the present invention, as shown in FIG. 6, the adhesive 32 is applied to the boundary portion between the substrate 5 and the flexible wiring board 29 so as to cover the connection portion between the flexible wiring board 29 and the electrode lead-out portion 31 of the substrate 1. At the same time, the portion between the flexible wiring boards 29 of the substrate 1 is applied to the inner portion of the end portion to which the flexible wiring board 29 is fixed. That is, in the present invention, the adhesive 32 is applied to the position inside the end of the substrate 1 in the portion where the flexible wiring board 29 does not exist, so that the adhesive 32 is applied to the end of the substrate 1 as shown in FIG. Since it does not hang from the part, there is no need to remove the adhesive 32 adhering to an unnecessary part after the work, and workability can be improved.
[0029]
In the present invention, in addition to the example shown in FIG. 6, the same effect can be obtained by applying the adhesive 32 only to the portion of the substrate 1 where the flexible wiring board 29 is fixed.
[0030]
Also, as a method of applying the adhesive 32, after connecting the flexible wiring board 29 to the electrode lead-out portion 31, the nozzle is moved while discharging the adhesive from the nozzle of the adhesive applying device, and applied to the substrate. In this case, in the portion between the flexible wiring boards 29 of the substrate 1, it can be realized by changing the coating pattern so as to be applied to the inner portion of the end portion where the flexible wiring board 29 is disposed. In this case, since the application pattern is changed while the adhesive 32 is discharged from the nozzle, the application amount of the adhesive 32 changes as in the case where the adhesive 32 is taken out from the nozzle or stopped. The adhesive 32 can be applied uniformly to the portion to be applied without fear of non-uniform adhesion.
[0031]
【The invention's effect】
As apparent from the above description, according to the present invention, a panel in which a plurality of electrode lead portions connected to the electrode group are divided into a plurality of blocks with a predetermined number as one unit at the end of the substrate, and this panel A wiring pattern connected to the electrode lead-out portion and a plurality of wiring boards disposed corresponding to the plurality of blocks of the electrode lead-out portion and fixed to the end portion of the substrate by an adhesive, and Adhesive is applied to the inner part of the part between the wiring boards of the board from the end where the wiring board is fixed, and the adhesive does not hang down from the end of the board. Eliminates the need to remove the adhesive material adhering to unnecessary parts, and can significantly improve workability in connecting the wiring board to the electrode lead portion of the electrode group of the plasma display device Obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a panel of a plasma display device according to an embodiment of the present invention. FIG. 2 is an explanatory view showing an electrode arrangement of the panel of the plasma display device. FIG. 4 is a plan view showing an internal arrangement structure of the plasma display device. FIG. 5 is a plan view showing a schematic structure of an electrode extraction portion of the panel of the plasma display apparatus. FIG. 7 is a plan view showing a schematic structure in which a wiring board is arranged in the electrode lead part of the panel of the plasma display device. FIG. 7 is a schematic plan view showing how the adhesive material hangs down in the electrode lead part of the panel of the plasma display device. FIG. 8 is a schematic plan view showing the effect of the present invention.
10 Panels 29 and 30 Flexible wiring board 31 Electrode leading part 32 Adhesive

Claims (2)

  A plurality of electrode groups are arranged on a pair of substrates opposed to each other so that a discharge space is formed between the substrates, and a plurality of electrode lead-out portions connected to the electrode groups are provided at one end of the substrate as a predetermined number. A panel that is divided into a plurality of blocks and a wiring pattern that is connected to the electrode lead-out portion of the panel, and is arranged corresponding to the plurality of blocks of the electrode lead-out portion and is attached to the end of the substrate A plurality of wiring boards fixed by the above-mentioned, and the adhesive is applied to a portion inside the portion between the wiring boards of the substrate that is applied to a portion inside the end portion to which the wiring boards are fixed. .   A plurality of electrode groups are arranged on a pair of substrates opposed to each other so that a discharge space is formed between the substrates, and a plurality of electrode lead-out portions connected to the electrode groups are provided at one end of the substrate as a predetermined number. A panel that is divided into a plurality of blocks and a wiring pattern that is connected to the electrode lead-out portion of the panel, and is arranged corresponding to the plurality of blocks of the electrode lead-out portion and is attached to the end of the substrate And connecting the wiring board to the electrode lead-out part of the panel, and then applying an adhesive to the connection part between the wiring board and the board, between the wiring boards of the board A method for manufacturing a plasma display device, characterized in that the coating pattern is changed so that the coating is applied to a portion inside the end portion where the wiring board is disposed.

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