CN100499010C - Bonding method for vent pipe of display panel - Google Patents
Bonding method for vent pipe of display panel Download PDFInfo
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- CN100499010C CN100499010C CNB2006100051193A CN200610005119A CN100499010C CN 100499010 C CN100499010 C CN 100499010C CN B2006100051193 A CNB2006100051193 A CN B2006100051193A CN 200610005119 A CN200610005119 A CN 200610005119A CN 100499010 C CN100499010 C CN 100499010C
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- breather pipe
- attachment
- display floater
- flange portion
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Abstract
The bonding method for a vent pipe of a display panel includes the step of preparing the bonding member on the periphery of the flange portion of the vent pipe, the step of interposing a buffer member made of a low-melting point glass flit having a softening temperature higher than that of the bonding member between a contact face to the display panel of the flange portion of the vent pipe and the display panel, and, in a state in which the flange portion of the vent pipe is pressed onto the display panel face by a pressing member so that the vent pipe is fixed, the step of heating the bonding member and the buffer member to a temperature to be softened so that the flange portion of the vent pipe is bonded to the display panel through the fused bonding member.
Description
Technical field
The present invention relates to the joint method of the breather pipe of display floater, be specifically related to be used for for from extracting foreign gas out such as the discharge space in the panel of the display floater of PDP (Plasmia indicating panel) or in discharge space, filling discharge gas and the joint method of the breather pipe that is provided with.
Background technology
Usually, in the display floater such as PDP, the substrate by making face side and the relative configuration of substrate of rear side and will around seal and form discharge space in inside.
When making above-mentioned display floater, usually, on the substrate of side air vent hole is set overleaf, and when heating/sealing the sealing process of substrate of the substrate of face side and rear side, junction of glass breather pipe (also claiming blast pipe or the pipe of leting slip a remark) makes it cover this air vent hole.Then, by this breather pipe, foreign gas is extracted out and fill discharge gas in panel from panel is inner, the breather pipe that fuses then makes its vent path of blocking breather pipe, carries out the sealing of discharge space.
As this breather pipe, be known that the flange portion of the end face that for example on an end of breather pipe, is formed with general planar and attachment of chimeric breather pipe and incorporate structure (opening the 2001-307635 communique) around it with reference to the spy.
At breather pipe is under the situation of said structure, the bottom surface of the flange portion of the end face with general planar of breather pipe is directly to contact with glass substrate, for example, in the middle of them, sandwich under the situation of foreign matter, when pushing back occurrence positions skew etc. with pressing element, the end face of breather pipe has the crack, at this moment, after heat treatment step in, can cause the leakage of display floater.
Summary of the invention
In view of the foregoing, the present invention breather pipe such as can not break by dispose buffer unit on the display floater contact-making surface of breather pipe flange portion.
The present invention is the joint method of the breather pipe of the display floater that the welding by attachment engages under a kind of state of tubular breather pipe and the position alignment of the air vent hole of display floater of the flange portion at the end face that an end is had general planar, wherein:
Periphery at the flange portion of above-mentioned breather pipe is provided with attachment, and the buffer unit of forming across the glass powder with low melting point higher between display floater contact-making surface by making the breather pipe flange portion and the display floater, the flange portion of above-mentioned breather pipe is fixed breather pipe by being pressed on the panel surface with pressing element than the softening temperature of above-mentioned attachment, under this state, above-mentioned attachment and buffering parts are heated to softening temperature, and the welding by attachment is bonded on the flange portion of breather pipe on the display floater in view of the above.
According to the present invention, owing to be provided with buffer unit on the display floater contact-making surface of breather pipe flange portion, so this buffer unit plays the effect of buffering, can not produce crack etc. on breather pipe.
So long as have in panel inside the space, need be by being arranged on any panel that air vent hole counter plate inner space on the panel is carried out exhaust or import gas etc. in this space, the breather pipe joint method of display floater of the present invention can both be suitable for as this display floater, can enumerate for example PDP or plasma addressed liquid crystal (PALC) panel etc.
In the present invention, as breather pipe, can use the pipe of the tubular of this known glass in field.As this breather pipe, use pipe cylindraceous usually, but its shape is not necessarily cylindraceous, in pipe as long as air can pass through.As this glass material, can enumerate for example alkaline borosilicate glass (softening point is 600～700 ℃ usually).On the opening of an end of breather pipe, form the flange portion of end face with general planar.This flange portion also can form with known manufacture method.Because the end face of flange portion is and contacted of substrate, so in order to prevent gas from this contact-making surface leakage etc., preferably the end face with this flange portion is formed flatly as far as possible.
Attachment are an end of breather pipe and the articulate member of display floater, and these attachment can use the softening point any material lower than breather pipe.But the sealing process of breather pipe normally carries out simultaneously with the sealing process of the substrate of the substrate of the face side of display floater and rear side.In the sealing operation, display floater is conveyed in the stove, temperature is risen up to the softening temperature that is configured in substrate encapsulant all around.Though the sealing temperature is relevant with encapsulant, owing to use the low low-melting glass of softening point usually as encapsulant, so roughly about 400～410 ℃.
Therefore, as attachment, preferably use softening point to form than the temperature glass material low, that have 380～390 ℃ softening point (glass softening point temperature) of sealing process.These attachment preferably comprise at least a in the oxide of Pb, Si, Al, B and Li.For example, can be to use softening point to be about 380 ℃, thermal coefficient of expansion as the material of these attachment is 72.5 ± 5 * 10
-7/ ℃ PbO, SiO
2, Al
2O
3, B
2O
3, LiO
2Deng glass powder with low melting point, in this glass powder with low melting point, add the known adhesive resins in this field such as acrylic resin, methacrylic resin, celluosic resin, and press molding is to have that to carry out roasting after the ring shape of roughly rectangular section formed.
Preferably attachment are entrenched in advance the periphery of breather pipe flange portion with temporary fixed.With attachment and breather pipe is temporary fixed can so carry out: after being installed in attachment on the breather pipe flange portion, put into heating furnace, softening temperature (promptly about about 380 ℃) with attachment heated about 10～30 minutes, made attachment be fused to the breather pipe flange portion.
In the present invention, before attachment are heated to softening temperature, will be configured in by the buffer unit that glass powder with low melting point is formed on the display floater contact-making surface of breather pipe flange portion.Buffer unit is to relax the flange portion of breather pipe and the member of the impact that contacts of display floater, and the temperature of its glass softening point preferably is higher than attachment, so it is softening slower than attachment.Particularly, buffer unit preferably high by about 10 than attachment by softening point, be that high about 30～40 ℃, softening point is that glass material about 410 ℃ forms.But buffer unit also can use with the attachment identical materials and form.
This buffer unit preferably contains at least a in the oxide of Pb, Si, Al, B, Li and Zn.For example, can with on the end face that low-melting glass cream is coated in the breather pipe flange portion and the material of interim roasting as the material of this buffer unit, this low-melting glass cream is that to be about 410 ℃, thermal coefficient of expansion with softening point be 72.5 ± 5 * 10
-7/ ℃ PbO, SiO
2, B
2O
3, low-melting glass dust such as ZnO, and in this glass powder with low melting point, add the known adhesive resins in this field such as acrylic resin, methacrylic resin, celluosic resin and solvent constitutes.
Preferably be that member that washer-shaped and roasting become joins on the display floater contact-making surface of the temporary fixed breather pipe flange portion that attachment are arranged in advance temporarily with this buffer unit press molding, and preferably in view of the above that attachment and buffering parts and breather pipe are integrated.
Buffer unit can so carry out with interim joint of breather pipe, that is: after the low-melting glass glue that buffer unit is used is coated on the display floater contact-making surface of flange portion of breather pipe, put into heating furnace, at the softening temperature of low-melting glass glue, promptly heat about 10～30 minutes under about 380～390 ℃ temperature, make the buffer unit welding on the display floater contact-making surface of breather pipe flange portion.
The present invention also can constitute like this: outer the placing of pushing that auxiliary part is entrenched in the breather pipe flange portion of the ring-type that softening temperature is higher than attachment makes this push auxiliary part to be positioned on the position than center one side of the more close breather pipe of attachment, will to push auxiliary part with pressing element and fix breather pipe by being pressed on the display floater face.
Push auxiliary part and be the auxiliary part that attachment and the breather pipe flange portion that engages with these attachment are used when being pressed on display floater one side, this pushes auxiliary part can be than attachment softening point height and in order to prevent break its thermal coefficient of expansion and the roughly the same any material of attachment.But, because the sealing process of breather pipe normally carries out simultaneously with the sealing process of display floater, so preferred softening point is more than or equal to the material of seal temperature.
Therefore, pushing auxiliary part preferably uses softening point to form more than or equal to 500 ℃ glass material.As this material, can enumerate NaO, B
2O
3The low-melting glass of system.In addition, also can use pottery etc.
For example, can use by softening point and be identical with attachment 72.5 ± 5 * 10 more than or equal to 500 ℃, thermal coefficient of expansion
-7/ ℃ Na
2O, Al
2O
3, B
2O
3, SiO
2The glass powder with low melting point of forming is pushed the material of auxiliary part as this, in this glass powder with low melting point, add the known adhesive resins in this field such as acrylic resin, methacrylic resin, celluosic resin, and press molding is to have to carry out roasting after the ring of roughly rectangular section and become to push auxiliary part.Push the member that auxiliary part preferably uses the process roasting.
For the interim breather pipe that is engaging buffer unit, pushing the temporary fixed of auxiliary part and attachment can so carry out, that is: after the flange portion that makes breather pipe is installed on the anchor clamps and will pushes auxiliary part and attachment up and is installed in the breather pipe flange portion successively, put into heating furnace, in the heating 10～30 minutes down of the softening temperature (about 380～390 ℃) of attachment, so that the attachment welding is at the breather pipe flange portion with push on the auxiliary part.
The breather pipe of so preparation is configured on the display floater with air vent hole, the buffer unit on the end face that temporarily is bonded on the breather pipe flange portion is contacted with display floater, and make the opening of breather pipe cover this air vent hole.At this moment, owing to being general planar, therefore be fixing easily state with the interim buffer unit that engages of the end face of flange portion.
Then, by with pressing element with the breather pipe flange portion or push and after auxiliary part has been fixed breather pipe on by the surface that is pressed in display floater attachment are heated to its softening temperature, make the flange portion of breather pipe be abutted against the welding of closing parts and join on the display floater.At this moment, can be any instrument as pressing element, use clip usually.
The joint method that the invention still further relates to the breather pipe that utilizes above-mentioned display floater is bonded on the breather pipe flange portion breather pipe connected structure of the display floater on the display floater.
The invention still further relates to the breather pipe assembly of the exhaust that is used to carry out panel inside on the air vent hole that is connected on the display floater, comprising: an end is formed with the opening that is connected with the air vent hole of above-mentioned display floater and has the hollow breather pipe of flange portion of the end face of, general planar contacted with display floater; The incorporate ring-type attachment of forming by glass dust by the periphery that is entrenched in above-mentioned breather pipe flange portion; The buffer unit that temporarily be bonded on the display floater contact surface of above-mentioned breather pipe flange portion, softening temperature is higher than the ring-type of attachment.
Description of drawings
Shown in Figure 1 is the figure of the breather pipe joint method of explanation embodiments of the present invention 1.
Shown in Figure 2 is the figure of the breather pipe joint method of explanation embodiments of the present invention 1.
Shown in Figure 3 is the figure of the breather pipe joint method of explanation embodiments of the present invention 1.
Fig. 4 is the state of breather pipe and display floater is clamped in expression with clip a plane graph.
Fig. 5 is the figure of Temperature Distribution of the sealing/deairing step of expression execution mode 1.
Fig. 6 is the flow chart of the sealing/deairing step of expression execution mode 1.
Shown in Figure 7 is the figure of the breather pipe joint method of explanation embodiments of the present invention 2.
Shown in Figure 8 is the further explanatory drawings of attachment.
Fig. 9 is the figure of Temperature Distribution of the sealing/deairing step of expression execution mode 2.
Embodiment
Based on execution mode shown in the drawings, describe the present invention in detail below.The present invention is not limited to this, also has various distortion.
Fig. 1～Fig. 3 is the figure of breather pipe joint method of the display floater of explanation embodiment of the present invention 1.
At first, shown in Fig. 1 (a)～Fig. 1 (c), use is formed with the breather pipe 1 (with reference to Fig. 1 (a)) of the flange portion 2 of the end face 2a with general planar on the opening of an end of breather pipe 1 cylindraceous.
The buffer unit 8 of washer-shaped (flat is circular) is bonded on temporarily on the end face 2a of flange portion 2 of breather pipe 1.This buffer unit 8 is by applying by the low-melting glass glue (with reference to Fig. 1 (b)) of glass powder with low melting point, adhesive resin, solvent composition, making it drying and roasting forms (with reference to Fig. 1 (c)).
Then, shown in Fig. 2 (a), from a distolateral order of pushing auxiliary part 5 than these attachment 3 high ring-types these ring-type attachment 3 and ring-type are pushed the periphery that auxiliary part 5 is bonded on the flange portion 2 of breather pipe 1 temporarily, to be formed in advance buffer unit 8, attachment 3 are installed on the breather pipe 1, push auxiliary part 5 and integrated breather pipe assembly 4 by ring-type attachment 3 and softening temperature.Illustrate in the back about this method for making.
What breather pipe 1 was common is the pipe made from alkaline borosilicate glass (softening point is 600～700 ℃) cylindraceous.
As buffer unit 8, using at softening point is 72.5 ± 5 * 10 for about 410～420 ℃, thermal coefficient of expansion
-7/ ℃ PbO, SiO
2, B
2O
3, composition such as ZnO glass powder with low melting point in add the low-melting glass glue that becomes paste behind known adhesive resin in this field and the solvent.The softening point of buffer unit 8 is set at higher 30～40 ℃ than the softening point of attachment 3.This buffer unit 8 also can be to sneak into adhesive resin and press molding is to carry out the molding glass material that roasting forms behind the washer-shaped in glass powder with low melting point.
Pushing auxiliary part 5 is to use softening point to be about 500 ℃, thermal coefficient of expansion to be all 72.5 ± 5 * 10 mutually with attachment 3
-7/ ℃ Na
2O, Al
2O
3, B
2O
3, SiO
2The glass powder with low melting point of forming, in this glass powder with low melting point, add the known adhesive resin in this field and press molding is to have the roughly circular member of rectangular section.
Making of ventilating pipe part 4 is as follows, at first, breather pipe 1 flange portion 2 that has temporarily engaged buffer unit 8 is placed on the anchor clamps 6 up; Then, after pushing auxiliary part 5 and being arranged on the anchor clamps 6 of ring-type placed in the periphery of flange portion 2, attachment 3 (with reference to Fig. 2 (b)) are set in the above.Put into heating furnace and heat under this state, make attachment 3 softening, what become that attachment 3 are engaged with flange portion 2 places and pushes auxiliary part 5 and be engaged with state on the attachment 3 outward, makes breather pipe assembly 4 (with reference to Fig. 2 (a)) in view of the above.
Push the thin thickness of the thickness of auxiliary part 5 on the length direction of breather pipe 1 than flange portion 2.In addition, attachment 3 and to push the thickness that auxiliary part 5 adds together bigger than the thickness of flange portion 2 on the length direction of breather pipe 1.
Secondly, as shown in Figure 3, in the manufacturing process of display floater, in order to low-melting glass be base material encapsulant 13 sealing face side substrate 11 and rear side substrate 12 around the time (sealing/deairing step), dispose breather pipe assembly 4 overleaf on the position of the air vent hole 14 on the substrate 12 of side.At this moment, the buffer unit 8 on the end face 2a of the flange portion 2 that temporarily is bonded on breather pipe 1 is contacted with the substrate 12 of rear side, cover air vent hole 14 with the opening of breather pipe 1.
After this position alignment, clamp with clip 15 and to push auxiliary part 5 and display floater fixes breather pipe 1, with the flange portion 2 of attachment 3 and the breather pipe 1 that engaging by being pressed in display floater one side.When pushing, clamp the many places on every side of display floater with same clip.
Fig. 4 is a plane graph of clamping the state of breather pipe 1 and display floater with clip 15.As shown in the drawing, clip 15 is provided with otch 15a, so that can push the flange portion 2 of breather pipe 1 and push auxiliary part 5.
Then, so clamping under the state of breather pipe 1 and display floater, implementing the sealing/deairing step of display floater with clip.In sealing/deairing step, display floater is put in sealing/exhaust furnace, under 400～410 ℃ of the softening temperatures of encapsulant 13, carry out roasting, make the encapsulant 13 of display floater periphery softening, thereby the substrate 11 of face side and the substrate 12 of rear side are sealed up.Breather pipe 2 is that alkaline borosilicate glass is made, and its softening point is 600～700 ℃.In addition, the substrate 12 of the substrate 11 of face side and rear side be to use high strain-point glass system, softening point is the material about 750～850 ℃.Therefore, the substrate 12 of the substrate 11 of breather pipe 2, face side and rear side can be not softening down in above-mentioned heating-up temperature (400～410 ℃).
By the heating of this operation, make attachment 3 also softening, the flange portion 2 of breather pipe 1 is engaged on the substrate 12 of rear side by the welding of these attachment 3.At this moment, buffer unit 8 is slowly more softening than attachment 3, utilizes this buffer unit 8 to relax the end face 2a of flange portion 2 and contacting of display floater of breather pipe 1; For example, even there is situation of foreign matter or occurrence positions skew in the middle of their, also can prevent the generation crack on the end face 2a of breather pipe.
In addition, because the slit of the end face 2a of the flange portion 2 of the buffer unit 8 filling breather pipes 1 that buffer unit 8 is softening slightly, utilization is in soft state and the contact-making surface of display floater, therefore the attachment 3 that are in soft state can not enter in the air vent hole of the opening of breather pipe or display floater, thereby can prevent that the opening of breather pipe or display floater air vent hole are blocked.At this moment, because the viscosity of buffer unit 8 is higher than the viscosity of attachment 3, so buffer unit 8 can not enter into the opening of breather pipe or the air vent hole of display floater.
Under this state because the substrate 12 of the substrate 11 of face side and rear side is sealed and breather pipe 1 is engaged on the substrate 12 of rear side, therefore by this breather pipe 1 from the inner foreign gas of extracting out of panel, and to the inner discharge gas of filling of panel; Afterwards, the mode of the ventilation path by blocking breather pipe 1 breather pipe that fuses carries out the sealing of discharge space.
Fig. 5 is the temperature profile of sealing/deairing step of the display floater of execution mode 1.Solid line is represented temperature, and dotted line is represented vacuum degree.
Heating is when temperature is 300 ℃ temperature to be kept about 30～40 minutes regularly, is heated to 410 ℃ then and also puts slightly a moment, makes temperature slowly drop to 390 ℃ then, and is keeping about 240 minutes under this temperature, afterwards natural cooling.
Among the figure, attachment 3 begin to soften at J constantly, and buffer unit 8 and encapsulant 13 begin to soften at K constantly.In the heating beginning, begin exhaust, but in fact vacuum degree rises constantly at the K of encapsulant 13 beginning fusions.The rising of vacuum degree makes display floater inside become negative pressure, consequently utilizes the attraction force acts between the substrate of the substrate of face side and rear side to come to encapsulant 13 pressurizations.
Be described as follows by flow chart shown in Figure 6 order above-mentioned sealing/deairing step.
At first, face side substrate 11 and rear side substrate 12 are coincided together, (step S1) is installed with the 1st clip; Dispose breather pipe 1 and (step 2) is installed by the 2nd clip; Then, display floater is put in sealing/exhaust furnace, vacuum head (step 3) is installed on breather pipe 1; Seal/deairing step, fill discharge gas (step 4); Downcut breather pipe 1 (step 5); Display floater is taken out from sealing/exhaust furnace, take off the 1st and the 2nd clip (step 6).
Fig. 7 is the figure of breather pipe joint method of the display floater of explanation embodiments of the present invention 2.
Present embodiment is used the buffer unit 8 of execution mode 1 and attachment 3 incorporate members as buffering attachment 9.Buffering attachment 9 are to use with attachment 3 identical materials of execution mode 1 and form.
At first, shown in Fig. 7 (a)～Fig. 7 (c), use the breather pipe 1 (with reference to Fig. 7 (a)) identical with execution mode 1; Secondly, use discoid buffering attachment 9, these buffering attachment 9 are installed in the periphery of the flange portion 2 of breather pipe 1.Then, make in advance with identical with execution mode 1 push auxiliary part 5 join on the buffering attachment 9 temporarily, buffering attachment 9 with push auxiliary part 5 and be installed in breather pipe assembly 4 (with reference to Fig. 7 (b)) also integrated on the breather pipe 1.
Fig. 8 (a) and Fig. 8 (b) are the figure that describes the buffering attachment in detail.
The discoid object that buffering attachment 9 are made up of buffering suface 9a and annulus 9b.Form the periphery that annulus 9b can be formed on the flange portion 2 of breather pipe 1 with installing.Forming buffering suface 9a makes it cover the display floater contact-making surface of the flange portion 2 of breather pipe 1 when the flange portion 2 that annulus 9b is installed in breather pipe 1 peripheral.
The making step of ventilating pipe part 4 is at first, its flange portion 2 to be arranged on the anchor clamps 6 up breather pipe 1; Secondly, in the periphery of flange portion 2, the auxiliary part 5 of pushing of ring-type is placed on the anchor clamps 6, buffering attachment 9 (with reference to Fig. 7 (c)) are set thereon then.Putting into heating furnace under this state heats, make buffering attachment 9 softening, become with buffering attachment 9 be bonded on flange portion 2 the periphery, and will push auxiliary part 5 and be bonded on state on these buffering attachment 9, thereby as Fig. 7 (b)) shown in, make breather pipe assembly 4.
Its sealing/deairing step is identical with execution mode 1.
Fig. 9 is the temperature profile of sealing/deairing step of the display floater of execution mode 2.Solid line is represented temperature, and dotted line is represented vacuum degree.
Sealing/deairing step is identical with execution mode 1, but owing to used buffering attachment 9, therefore the Temperature Distribution of sealing/deairing step is slightly different with execution mode 1.
Heating is in the time of 300 ℃ temperature to be kept about 30～40 minutes regularly, is heated to 410 ℃ and put slightly a moment afterwards, makes temperature slowly drop to 350 ℃ and kept this temperature 240 minutes again, then natural cooling.
In the above-mentioned thermal technology's preface that is used for exhaust, by after 410 ℃ of the softening temperatures that is heated to encapsulant 13, make panel temperature smaller or equal to 380 ℃ of softening point of the buffering attachment, be preferably about 350 ℃, keep cushioning the high viscosity of attachment.
Among the figure, buffering attachment 9 begin to soften at J constantly, and encapsulant 13 begins to soften at K constantly.In the heating beginning, begin exhaust, but vacuum degree rises constantly at the K of encapsulant 13 beginning fusions.The process of sealing/deairing step is identical with the flow chart of execution mode 1 expression.
The following describes embodiment.With the embodiment that relates to execution mode 1 be embodiment 1, the embodiment that relates to execution mode 2 is that embodiment 2 describes.
Preparation is processed as flange shape breather pipe, the glass powder with low melting point that buffer unit is used of the end face with general planar with an end of glass tube and is configured as the attachment of ring-type and pushes auxiliary part.
The softening point that is configured as the attachment of ring-type is about 380 ℃, and the softening point of pushing auxiliary part is about 500 ℃, and the softening point of the glass powder with low melting point that buffer unit is used is about 410 ℃.
At first, on the end face of the flange portion of breather pipe, apply the glass powder with low melting point that is used to form buffer unit.This coating operation is used coating of (dispense) mode of distribution or the method for utilizing spatula to smear.The thickness of formed coat film is 200 μ m～500 μ m, and pattern width is about 1mm.
Secondly, interim roasting is coated with the breather pipe of the glass powder with low melting point that buffer unit uses, and removes the resinous principle in the glass powder with low melting point, makes low-melting glass softening and integrated with breather pipe, becomes the breather pipe that has adhered to buffer unit.The interim calcining of this moment was carried out 30 minutes under about 400 ℃ temperature.
Then, attachment are entrenched in the side of panel of the flange portion of breather pipe, to push auxiliary part and be entrenched in reverse side, the roasting temperature about 380 ℃～390 ℃ is so that attachment are softening, in view of the above with breather pipe, attachment, to push auxiliary part integrated.
Like this ventilating pipe part of making of configuration makes its covering be arranged on air vent hole on the rear side of display floater, and fixes with clip.Then, through making thermal technology's preface of display floater sealing/exhaust, make the PDP panel.
Preparation with an end of glass tube be processed as the end face with general planar flange shape breather pipe, be configured as discoid buffer unit and be configured as the auxiliary part of pushing of ring-type.
Being configured as discoid buffering attachment begins to contact facing to the part till the surface of display floater one side to flange portion with the side from flange portion of breather pipe.
The softening point that is configured as discoid buffer unit is about 380 ℃, and the softening point of pushing auxiliary part is about 500 ℃.
Then, the buffering attachment are entrenched on panel one side of flange portion of breather pipe, to push auxiliary part is entrenched on the reverse side, roasting temperature about 380 ℃～390 ℃ is so that the buffering attachment are softening, in view of the above with breather pipe, cushion attachment, to push auxiliary part integrated.
Like this ventilating pipe part of making of configuration makes its covering be arranged on air vent hole on the rear side of display floater, and fixes with clip.Then, through making thermal technology's preface of display floater sealing/exhaust, make the PDP panel.
As mentioned above, by on the flange portion of breather pipe and face that display floater contacts, disposing buffer unit, when carrying out the sealing of display floater/deairing step, buffer unit plays buffering, the end face of the flange portion of breather pipe is not directly contacted with glass substrate, therefore can prevent to produce the crack in the flange portion of breather pipe, and it is damaged to prevent that flange portion from taking place.In addition, because buffer unit uses the glass powder with low melting point higher than attachment softening temperature, therefore in the heat treatment of the sealing/deairing step of display floater, the viscosity of buffer unit can not descend and can keep high viscosity, therefore can prevent to stop up the opening of breather pipe or the air vent hole of display floater.
In addition, with buffer unit and attachment integrated the buffering attachment flange portion that is configured in breather pipe and face that display floater contacts on also can obtain same effect.
Claims (8)
1. the joint method of the breather pipe of a display floater, this joint method is under the state of the air vent hole position alignment of the tubular breather pipe of the flange portion that an end is had the general planar end face and display floater, engage the breather pipe of display floater by the welding of attachment, wherein
Periphery at the above-mentioned flange portion of above-mentioned breather pipe is provided with attachment, and make the buffer unit that constitutes across the softening temperature glass powder with low melting point higher between the display floater contact-making surface of flange portion of above-mentioned breather pipe and the above-mentioned display floater than above-mentioned attachment, with pressing element with the above-mentioned flange portion of above-mentioned breather pipe by being pressed on the above-mentioned panel surface with under with the securing state of above-mentioned breather pipe, above-mentioned attachment and above-mentioned buffer unit are heated to softening temperature, by the welding of above-mentioned attachment, the above-mentioned flange portion of above-mentioned breather pipe is bonded on the above-mentioned display floater.
2. the joint method of the breather pipe of a display floater comprises following operation:
Prepare at one end to have the breather pipe of tubular of flange portion of end face of general planar and the attachment of ring-type, these attachment are entrenched in the periphery of the flange portion of above-mentioned breather pipe;
Have on the display floater of air vent hole the above-mentioned breather pipe of configuration, the end face of the flange portion of this breather pipe is being contacted, also the opening with above-mentioned breather pipe covers above-mentioned air vent hole with above-mentioned display floater;
After the flange portion of above-mentioned breather pipe being fixed above-mentioned breather pipe by the surface that is pressed in above-mentioned display floater with pressing element, by above-mentioned attachment are heated to its softening temperature, be bonded on the above-mentioned display floater by the welding of above-mentioned attachment flange portion with above-mentioned breather pipe;
Before above-mentioned attachment are heated to softening temperature, the washer-shaped buffer unit of being made up of glass powder with low melting point is set on the display floater contact-making surface of the flange portion of above-mentioned breather pipe.
3. the joint method of the breather pipe of claim 1 or 2 described display floaters, wherein:
When the flange portion that above-mentioned attachment is entrenched in advance above-mentioned breather pipe outer placed and is temporary fixed, in advance above-mentioned buffer unit is bonded on temporarily on the display floater contact-making surface of flange portion of above-mentioned breather pipe, thus above-mentioned attachment and above-mentioned buffer unit and above-mentioned breather pipe is integrated.
4. the joint method of the breather pipe of claim 1 or 2 described display floaters, wherein:
The temperature of the glass softening point of above-mentioned buffer unit is higher than above-mentioned attachment, and in view of the above, it compares more softening with above-mentioned attachment.
5. the joint method of the breather pipe of the described display floater of claim 4, wherein:
The glass softening point temperature of above-mentioned buffer unit is than the glass softening point temperature high approximately 10 of above-mentioned attachment.
6. the joint method of the breather pipe of claim 1 or 2 described display floaters is characterized in that:
Above-mentioned attachment and above-mentioned buffer unit comprise Pb, Si, Al, B, Li, and the oxide of Zn at least a.
7. the connected structure of the breather pipe of a display floater, wherein:
Utilize the described any method of claim 1～6 that the flange portion of breather pipe is bonded on the display floater.
8. breather pipe assembly, this breather pipe assembly are connected on the air vent hole of display floater, are used to carry out the exhaust of display floater inside, comprising:
Hollow breather pipe, one end are formed with the opening that is connected with the above-mentioned air vent hole of above-mentioned display floater and have the flange portion of the end face of, general planar contacted with above-mentioned display floater;
The incorporate ring-type attachment of forming by glass dust by the periphery of the flange portion that is entrenched in above-mentioned breather pipe; With
The buffer unit that temporarily be bonded on the display floater contact surface of above-mentioned breather pipe flange portion, softening temperature is higher than the ring-type of attachment.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005006611 | 2005-01-13 | ||
| JP2005006611 | 2005-01-13 | ||
| JP2005287795 | 2005-09-30 |
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| Publication Number | Publication Date |
|---|---|
| CN1805098A CN1805098A (en) | 2006-07-19 |
| CN100499010C true CN100499010C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100051193A Expired - Fee Related CN100499010C (en) | 2005-01-13 | 2006-01-12 | Bonding method for vent pipe of display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100499010C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102316A (en) * | 1986-04-08 | 1987-10-28 | 杭州大学 | Plasma display panel |
-
2006
- 2006-01-12 CN CNB2006100051193A patent/CN100499010C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102316A (en) * | 1986-04-08 | 1987-10-28 | 杭州大学 | Plasma display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1805098A (en) | 2006-07-19 |
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