JP2001043800A - Discharging means - Google Patents
Discharging meansInfo
- Publication number
- JP2001043800A JP2001043800A JP11218837A JP21883799A JP2001043800A JP 2001043800 A JP2001043800 A JP 2001043800A JP 11218837 A JP11218837 A JP 11218837A JP 21883799 A JP21883799 A JP 21883799A JP 2001043800 A JP2001043800 A JP 2001043800A
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- Prior art keywords
- opening
- viscosity
- medium
- viscosity substance
- substance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- Coating Apparatus (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、１０００ｃｐｓ〜
１００００００ｃｐｓの高粘度物質を吐出し、これを媒
体上に付着形成させる方法に用いられる吐出手段に関す
る。BACKGROUND OF THE INVENTION
The present invention relates to a discharging unit used for a method of discharging a high-viscosity substance of 1,000,000 cps and forming the substance on a medium.
【０００２】[0002]
【従来の技術】従来、高粘度物質を対象物（媒体とも言
う）上に形成する方法として、蛍光体粉末、バインダ
ー、溶剤からなる蛍光体インキを帯電させてノズルより
射出し、微粒子化した蛍光体インクを高電圧によってパ
ネル内面に付着させて蛍光面を形成する蛍光面形成方法
が提案されている（特開昭５５−１３１９４８号公
報）。また、インクジェット方式のノズル機構を用いて
蛍光体を吐出塗布し、陰極線管の蛍光面を形成する方法
等も提案されている（特開平７−８１０５７号公報、特
開平８−２１２９２５号公報）。しかしながら、これら
従来提案されているものは、ノズル内の高粘度物質を静
電力による吸引または電気機械的に加圧して先端開口か
ら押し出し、押し出された膨出部がある長さになると、
根元部分（ノズル開口部分）から切断され、その後表面
張力によって球状の滴となり、これが対象物上に付着す
るものである。そのため、対象物に付着するドットの大
きさはノズル開口径よりも５〜６倍程度に大きいものと
なってしまい、精細なパターンを対象物上に高粘度物質
で形成するのは困難であった。これらの方法の場合、ノ
ズルから形成される高粘度物質の滴の径（ドット径）を
小さくしようとすれば、ノズレ開口径を小さくするしか
ない。このため、高粘度物質の粘度が非常に大きかった
り、高粘度物質を構成する粒子径が大きくなると、ノズ
ルの目詰まりを起こしてしまうという問題もあった。2. Description of the Related Art Conventionally, as a method of forming a high-viscosity substance on an object (also referred to as a medium), a phosphor ink composed of a phosphor powder, a binder, and a solvent is charged and ejected from a nozzle to form finely divided fluorescent ink. A fluorescent screen forming method has been proposed in which a body ink is attached to the inner surface of a panel by a high voltage to form a fluorescent screen (Japanese Patent Laid-Open No. 55-131948). Further, a method of forming a fluorescent screen of a cathode ray tube by discharging and applying a phosphor using an ink jet type nozzle mechanism has also been proposed (Japanese Patent Application Laid-Open Nos. 7-81057 and 8-212925). However, those conventionally proposed, the high-viscosity substance in the nozzle is sucked by electrostatic force or electromechanically pressurized and extruded from the tip opening, and when the extruded bulging portion has a certain length,
It is cut from the root part (nozzle opening part) and then becomes a spherical droplet due to surface tension, which adheres to the target object. Therefore, the size of the dots attached to the target is about 5 to 6 times larger than the nozzle opening diameter, and it is difficult to form a fine pattern on the target using a high-viscosity substance. . In these methods, the only way to reduce the diameter (dot diameter) of a droplet of a high-viscosity substance formed from a nozzle is to reduce the nozzle opening diameter. For this reason, when the viscosity of the high-viscosity substance is very large, or when the particle diameter of the high-viscosity substance is large, there is a problem that the nozzle is clogged.
【０００３】このように、従来のノズルを用いた対象物
（媒体）上への高粘度物質パターンの形成においては、
種々問題があり、その対応が求められている中、本願出
願人により、下部に１つ以上の孔径５０μｍ〜１ｍｍφ
程度の円形または多角形のオリフィス、ノズル等の開口
部を有し、その一部または全体を電極として配置し、且
つ、１０００ｃｐｓ〜１００００００ｃｐｓの高粘度物
質を充填し、前記高粘度物質を開口部から吐出する吐出
手段を用い、開口部から、前記高粘度物質を吐出し、高
粘度物質を媒体上に付着させる、媒体上への高粘度物質
形成方法であって、精細なパターンを高粘度物質で対象
物（媒体）上に形成することができ、且つ、高粘度物質
の粘度が非常に大きかったり、高粘度物質を構成する粒
子径が大きくなる場合にも開口部の目詰まりを起こさず
安定的に、高粘度物質を対象物（媒体）上に形成するこ
とができる方法が提案されている。この方法は、図６
（ａ）に示すような吐出手段１３０を用い、必要に応じ
て吐出手段内の高粘度物質１２１に圧力をかけ、高粘度
物質１２１のメニスカスを開口部１１１に形成し、更に
必要に応じて電極１１４を介して吐出手段１３０の開口
部１１１と媒体１４０間に第１の所定電圧値のパルス電
圧を印加して、開口部１１１に高粘度物質１２１のメニ
スカスを縦長に伸長した伸長部１２１Ａを形成した状態
で、高粘度物質を対象物（媒体）上に形成するものであ
る。あるいは、前記電極１１４を介して吐出手段１３０
の開口部１１１と媒体１４０間に第２の所定電圧値のパ
ルス電圧を印加することにより、伸長部１２１Ａの先端
よりその一部を分離して、分離された滴状の高粘度物質
１２１を、直接ないし間接的に高粘度物質を対象物（媒
体）上に形成するものである。この方法において用いら
れるオリフィス、ノズル等の開口部については、開口部
の開口よりもはるかに小さい径の伸長部を形成すること
ができ、伸長部先端から、媒体上に高粘度物質を伝わる
ようにして、あるいは分離して滴にして付着するため、
開口部を小さくする必要はなく、その加工精度もそれほ
ど必要とされない。尚、図６（ｂ）は、図６（ａ）のＢ
０側から見た図で、図６（ａ）は図６（ｂ）のＢ１−Ｂ
２における断面図である。As described above, in forming a high-viscosity material pattern on an object (medium) using a conventional nozzle,
While there are various problems and measures are being taken, the applicant of the present invention has proposed that one or more holes having a diameter of 50 μm to 1 mm
A circular or polygonal orifice, an opening such as a nozzle, a part or the whole of which is arranged as an electrode, and is filled with a high-viscosity material of 1000 cps to 1,000,000 cps, and the high-viscosity material is passed through the opening. A method for forming a high-viscosity substance on a medium, comprising discharging the high-viscosity substance from an opening and attaching the high-viscosity substance onto a medium, using a discharge means for discharging, wherein a fine pattern is formed of the high-viscosity substance. It can be formed on an object (medium) and is stable without clogging the opening even when the viscosity of the high-viscosity substance is very large or the particle diameter of the high-viscosity substance is large. In addition, a method capable of forming a high-viscosity substance on an object (medium) has been proposed. This method is illustrated in FIG.
As shown in FIG. 3A, a pressure is applied to the high-viscosity substance 121 in the discharge means as needed, a meniscus of the high-viscosity substance 121 is formed in the opening 111, and an electrode is formed if necessary. A pulse voltage of a first predetermined voltage value is applied between the opening 111 of the ejection means 130 and the medium 140 via 114 to form an elongated portion 121A in which the meniscus of the high-viscosity substance 121 is elongated in the opening 111. In this state, a high-viscosity substance is formed on an object (medium). Alternatively, the discharging means 130 may be
By applying a pulse voltage of the second predetermined voltage value between the opening 111 and the medium 140, a part of the extension part 121A is separated from the tip of the extension part 121A, and the separated droplet-shaped high-viscosity substance 121 is removed. It forms a high-viscosity substance directly or indirectly on an object (medium). With respect to openings such as orifices and nozzles used in this method, it is possible to form an extension having a diameter much smaller than the opening of the opening, and to transmit a highly viscous substance onto the medium from the tip of the extension. Or separate and adhere as drops
The opening does not need to be small, and its processing accuracy is not so required. Incidentally, FIG.
FIG. 6A is a diagram viewed from the 0 side, and FIG.
It is sectional drawing in 2.
【０００４】ここで、上記図６に示す吐出手段１３０に
おける高粘度物質１２１の吐出を説明するために、高粘
度物質１２１の吐出原理とその制御方法を、図３、図４
に基づいて、以下、簡単に説明しておく。高粘度物質２
１が容器（図示していない）より充填されたオリフィス
の開口部１１Ａに所定の圧力を加えると、先端開口に突
出したメニスカス１７が形成される。（図３（ａ）） この状態で図４に示すように、１０Ｈｚ〜１ｋＨｚ以下
の繰り返し周波数での電圧値Ｖ１のパルス電圧を電極
（図６の１１４に相当）と対象物（図６の１４０に相
当）間に加えていくと、次第にメニスカス１７が下方へ
伸長して伸長部１８が生成される。（図３（ｂ）■図３
（ｃ）） 電圧値Ｖ１のパルス電圧を繰り返し印加していくと、伸
長部１８はあるところで伸びなくなる。（図３（ｄ）） この状態は、高粘度物質の表面張力と、電界及ぴ重力に
よる下方への引っ張り力とがバランスした状態である。
このとき、図４に示すように、電圧値Ｖ２のパルス電圧
を印加すると、伸長部ｌ８がのぴて先端部が切断分離し
て、あるいは先端部が対象物に直接接触して切断分離
し、対象物上に、高粘度物質の滴（ドットとも言う）１
９が形成される。（図３（ｅ）） 伸長部１８の先端が媒体（対象物）に直接接触しても、
いなくても、伸長部１８の先端部の分離が起こる。この
状態で印加するパルス電圧を電圧値Ｖ１に戻すと、伸長
部１８が若干収縮して短くなりその状態で安定し、伸長
部１８の先端部での分離は行われなくなる。さらに、パ
ルス電圧の印加を停止すると、高粘度物質の表面張力に
よって伸長部１８はさらに収縮し（図３（ｃ）■図３
（ｂ））、図３（ａ）に示すメニスカス１７の状態に復
帰する。なお、上記の例におけるパルス電圧の電圧値Ｖ
１、Ｖ２は高粘度物質の種類によって異なるので、物質
の粘度、表面張力、の開口部１１Ａの開口径等に応じて
適宜電圧を変える必要がある。メニスカス１７は吐出さ
せる開口径と同じ径を有しているが、メニスカス先端か
らのびた伸長部１８の先端から分離される高粘度物質
（滴１９）は、先端の開口径よりはるかに小さい。この
ように、大きな径の開口から小さな滴１９が得られるの
で、高粘度物質を細線状に塗布したり、狭い領域に塗布
するなど、広い応用が期待できる。また、開口部の径を
大きくすることにより１００万ｃｐｓ程度の高粘度物質
であっても充填させて吐出させることができる。Here, in order to explain the discharge of the high-viscosity substance 121 by the discharge means 130 shown in FIG. 6, the principle of discharging the high-viscosity substance 121 and the control method thereof will be described with reference to FIGS.
This will be briefly described below. High viscosity substance 2
When a predetermined pressure is applied to the opening 11A of the orifice filled with 1 from a container (not shown), a meniscus 17 protruding from the tip opening is formed. (FIG. 3A) In this state, as shown in FIG. 4, a pulse voltage having a voltage value V1 at a repetition frequency of 10 Hz to 1 kHz or less is applied to the electrode (corresponding to 114 in FIG. 6) and the object (140 in FIG. 6). ), The meniscus 17 gradually extends downward, and an extension 18 is generated. (FIG. 3B)
(C) When the pulse voltage having the voltage value V1 is repeatedly applied, the extension portion 18 does not extend at a certain position. (FIG. 3D) This state is a state in which the surface tension of the high-viscosity substance and the downward pulling force due to the electric field and the gravity are balanced.
At this time, as shown in FIG. 4, when a pulse voltage having a voltage value V2 is applied, the elongating portion 18 is cut and separated at its tip, or the tip is cut and separated by directly contacting the object. Drops (also referred to as dots) of a highly viscous substance on an object 1
9 is formed. (FIG. 3 (e)) Even if the tip of the extension portion 18 is in direct contact with the medium (object),
If not, the distal end of the extension 18 separates. When the pulse voltage applied in this state is returned to the voltage value V1, the extension portion 18 contracts slightly and becomes short, and is stabilized in this state, and separation at the distal end portion of the extension portion 18 is not performed. Further, when the application of the pulse voltage is stopped, the extension portion 18 further contracts due to the surface tension of the high-viscosity substance (FIG. 3C).
(B)), returning to the state of the meniscus 17 shown in FIG. Note that the voltage value V of the pulse voltage in the above example is
Since V1 and V2 vary depending on the type of the high-viscosity substance, it is necessary to appropriately change the voltage according to the viscosity of the substance, the surface tension, the diameter of the opening 11A, and the like. The meniscus 17 has the same diameter as the opening diameter to be discharged, but the high-viscosity substance (droplet 19) separated from the tip of the extension portion 18 extending from the tip of the meniscus is much smaller than the opening diameter at the tip. As described above, since the small droplet 19 is obtained from the opening having a large diameter, a wide application such as applying a high-viscosity substance in a fine line shape or applying it to a narrow area can be expected. Further, by increasing the diameter of the opening, even a high-viscosity substance of about 1,000,000 cps can be filled and discharged.
【０００５】尚、分離される高粘度物質（滴１９）の形
成は、図４に示すように、電圧値Ｖ２のパルス電圧の立
ち上がり、立ち下がりのタイミングで行われ、この場
合、１パルスに対して２つの分離された高粘度物質（滴
１９）が形成されるが、パルス電圧が印加される時間を
極端に小さくしていくと、１パルスに対して１つの分離
された高粘度物質（滴１９）が形成される。勿論、図４
では、パルス電圧が印加される時間Ｔｗが極端に小でな
い場合である。図４中、丸印は、その時刻（タイミン
グ）で１回の分離が行われることを示している。更に、
パルス電圧の電圧値の大きさを小さくしていくと、所定
の電圧（電圧値Ｖｍ）以下で、分離は行われなくなる。
パルス電圧が印加される時間Ｔｗが極端に小になった場
合には、前述の所定の電圧（電圧値Ｖ０）以上でも、１
パルスに対し１つの分離された高粘度物質（滴１９）し
か形成されないこともあるが、パルス電圧が前述の所定
の電圧（電圧値Ｖ０）以上で、且つ、約１０ｍｍｓｅｃ
以上の印加時間である場合には、印加時間によらず、パ
ルス電圧の立ち上がり、立ち下がりのタイミングで分離
がそれぞれ行われる。As shown in FIG. 4, the formation of the separated high-viscosity substance (drop 19) is performed at the rising and falling timings of the pulse voltage V2. Thus, two separated high-viscosity substances (drops 19) are formed. However, when the time during which the pulse voltage is applied is extremely reduced, one separated high-viscosity substance (droplets 19) is generated for one pulse. 19) is formed. Of course, FIG.
In this case, the time Tw during which the pulse voltage is applied is not extremely small. In FIG. 4, the circles indicate that one separation is performed at that time (timing). Furthermore,
As the magnitude of the voltage value of the pulse voltage is reduced, separation is not performed below a predetermined voltage (voltage value Vm).
When the time Tw during which the pulse voltage is applied becomes extremely small, even if the voltage is equal to or higher than the above-mentioned predetermined voltage (voltage value V0), 1
Although only one separated high-viscosity substance (drop 19) may be formed for the pulse, the pulse voltage is higher than the predetermined voltage (voltage value V0) and about 10 mmsec.
In the case of the above application time, separation is performed at the rising and falling timings of the pulse voltage independently of the application time.
【０００６】したがって、例えば、所定の電圧（電圧値
Ｖ０）より大きい、上記電圧値Ｖ３のパルス電圧と、所
定の電圧（電圧値Ｖｍ）より小さい、電圧値Ｖ４のパル
ス電圧を用い、図５のようにかけて、高粘度物質の分離
を制御することができる。図５中、丸印は、図４と同
様、その時刻（タイミング）で１回の分離が行われるこ
とを示している。即ち、電圧値Ｖ３のパルス電圧の立ち
上がり、立ち下がりのタイミングで分離を行い、電圧値
Ｖ４のパルス電圧の印加により、伸長部１８を所定の長
さに保ちもので、電圧値Ｖ４のパルス電圧の印加によ
り、電圧値Ｖ３のパルス電圧の立ち上がり、立ち下がり
のタイミングで分離がスムーズに行えるように制御する
ものである。尚、伸長部の形成は、所定の電圧（図４の
電圧値Ｖ１のパルス電圧に相当）をかけて行うが、必ず
しもＶ１と上記Ｖ４とを同じにする必要はないが、作業
上、Ｖ１、Ｖ４とをＶｍに近い（Ｖｍよりも小さい）、
同じ値とすることもある。勿論、図５は、パルス電圧が
印加される時間が極端に小でない場合である。Therefore, for example, a pulse voltage having a voltage value V3 larger than a predetermined voltage (voltage value V0) and a pulse voltage having a voltage value V4 smaller than a predetermined voltage (voltage value Vm) are used as shown in FIG. In this way, the separation of high viscosity substances can be controlled. In FIG. 5, the circles indicate that one separation is performed at that time (timing), as in FIG. That is, separation is performed at the rising and falling timings of the pulse voltage of the voltage value V3, and by applying the pulse voltage of the voltage value V4, the extension unit 18 is maintained at a predetermined length. The application is controlled so that the separation can be performed smoothly at the rising and falling timings of the pulse voltage of the voltage value V3. The extension portion is formed by applying a predetermined voltage (corresponding to a pulse voltage having a voltage value V1 in FIG. 4). It is not necessary to make V1 and V4 the same. V4 is close to Vm (less than Vm);
It may be the same value. Of course, FIG. 5 shows a case where the time during which the pulse voltage is applied is not extremely short.
【０００７】このようにして、高粘度物質を媒体上に形
成するための吐出手段として、図６に示すような吐出手
段１３０が用いられているが、開口部１１１先端の肉厚
部１１２の開口部面１１２Ｓから高粘度物質１０が伝わ
る場合があり、また、メニスカスの形成が不安定な場合
があり、これが原因で媒体上への高粘度物質１０の付着
の制御が正常に行われないことが多々あった。As a discharge means for forming a high-viscosity substance on a medium, a discharge means 130 as shown in FIG. 6 is used. The high-viscosity substance 10 may be transmitted from the part surface 112S, and the formation of the meniscus may be unstable, which may result in improper control of the adhesion of the high-viscosity substance 10 on the medium. There were many.
【０００８】[0008]
【発明が解決しようとする課題】上記のように、開口部
から、１０００ｃｐｓ〜１００００００ｃｐｓの高粘度
物質を吐出して媒体上に付着させて、媒体上へ高粘度物
質を形成する高粘度物質形成方法に用いられる、吐出手
段においては、媒体上への高粘度物質１０の付着の制御
が正常に行うことができるものが求められていた。本発
明は、これに対応するもので、開口部から、１０００ｃ
ｐｓ〜１００００００ｃｐｓの高粘度物質を吐出して媒
体上に付着させて、媒体上へ高粘度物質を形成する高粘
度物質形成方法に用いられる、下部に１つ以上の孔径５
０μｍ〜１ｍｍφ程度の円形または多角形のオリフィス
からなる開口部を有し、前記高粘度物質を充填し、高粘
度物質を開口部から吐出する吐出手段であって、開口部
の肉厚部面から高粘度物質１０が伝わることがない吐出
手段、更には、安定的なメニスカス形成ないしメニスカ
スを伸長した伸長部の形成を可能とする吐出手段を提供
しようとするもので、これにより、媒体上への高粘度物
質１０の付着の制御が正常に行なおうとするものであ
る。As described above, a method of forming a high-viscosity substance which forms a high-viscosity substance on a medium by discharging a high-viscosity substance of 1000 cps to 1,000,000 cps from an opening and attaching it to the medium. For the ejection means used in the above, there has been a demand for an ejection means capable of controlling the adhesion of the high-viscosity substance 10 on the medium normally. The present invention corresponds to this, and the opening is 1000 c.
One or more pore diameters 5 are used in a high-viscosity material forming method of forming a high-viscosity material on a medium by ejecting a high-viscosity material of ps to 1,000,000 cps and attaching the material on the medium.
Discharge means having an opening formed of a circular or polygonal orifice of about 0 μm to 1 mmφ, filling the high-viscosity substance, and discharging the high-viscosity substance from the opening. The purpose of the present invention is to provide a discharge means that does not allow the high-viscosity substance 10 to be transmitted, and further provide a discharge means that enables stable formation of a meniscus or formation of an elongated portion that extends the meniscus. This is intended to control the adhesion of the high-viscosity substance 10 normally.
【０００９】[0009]
【課題を解決するための手段】本発明の吐出手段は、開
口部から、１０００ｃｐｓ〜１００００００ｃｐｓの高
粘度物質を吐出して媒体上に付着させて、媒体上へ高粘
度物質を形成する高粘度物質形成方法に用いられる、下
部に１つ以上の孔径５０μｍ〜１ｍｍφ程度の円形また
は多角形のオリフィスからなる開口部を有し、前記高粘
度物質を充填し、高粘度物質を開口部から吐出する吐出
手段であって、開口部の吐出孔先端における、吐出側の
肉厚を、吐出される高粘度物質が付着しない肉厚以下に
薄くしていることを特徴とするものである。According to the present invention, there is provided a discharging means for discharging a high-viscosity substance of 1000 cps to 1,000,000 cps from an opening to adhere to a medium to form a high-viscosity substance on the medium. Discharge for filling the high-viscosity substance and discharging the high-viscosity substance from the opening, which has one or more circular or polygonal orifices with a hole diameter of about 50 μm to 1 mmφ at the bottom used in the forming method. The thickness of the discharge side at the tip of the discharge hole of the opening is reduced to a thickness not more than the thickness at which the discharged high-viscosity substance does not adhere.
【００１０】あるいは、本発明の吐出手段は、開口部か
ら、１０００ｃｐｓ〜１００００００ｃｐｓの高粘度物
質を吐出して媒体上に付着させて、媒体上へ高粘度物質
を形成する高粘度物質形成方法に用いられる、下部に１
つ以上の孔径５０μｍ〜１ｍｍφ程度の円形または多角
形のオリフィスからなる開口部を有し、前記高粘度物質
を充填し、高粘度物質を開口部から吐出する吐出手段で
あって、開口部の吐出孔先端の、吐出側とは反対側に、
ほぼ鉛直方向に配設された壁面を備えていることを特徴
とするものである。Alternatively, the discharging means of the present invention is used in a method for forming a high-viscosity substance which forms a high-viscosity substance on a medium by discharging a high-viscosity substance of 1000 cps to 1,000,000 cps from an opening and attaching the substance to a medium. , One at the bottom
Discharging means for filling the high-viscosity substance and discharging the high-viscosity substance from the opening, the discharge means having at least one opening having a circular or polygonal orifice having a diameter of about 50 μm to 1 mmφ; At the end of the hole, opposite to the discharge side,
It is characterized by having a wall surface arranged substantially vertically.
【００１１】あるいはまた、本発明の吐出手段は、開口
部から、１０００ｃｐｓ〜１００００００ｃｐｓの高粘
度物質を吐出して媒体上に付着させて、媒体上へ高粘度
物質を形成する高粘度物質形成方法に用いられる、下部
に１つ以上の孔径５０μｍ〜１ｍｍφ程度の円形または
多角形のオリフィスからなる開口部を有し、前記高粘度
物質を充填し、高粘度物質を開口部から吐出する吐出手
段であって、開口部の吐出孔先端における、吐出側の肉
厚を、吐出される高粘度物質が付着しない肉厚以下に薄
くし、且つ、開口部の吐出孔先端の、吐出側とは反対側
に、ほぼ鉛直方向に配設された壁面を備えていることを
特徴とするものである。Alternatively, the discharge means of the present invention is directed to a method for forming a high-viscosity material, which discharges a high-viscosity material of 1000 cps to 1,000,000 cps from an opening to adhere to a medium to form the high-viscosity material on the medium. Discharge means which has an opening formed of a circular or polygonal orifice having at least one hole diameter of about 50 μm to 1 mmφ at a lower portion, fills the high-viscosity substance, and discharges the high-viscosity substance from the opening. The thickness of the discharge hole at the tip of the discharge hole of the opening is reduced to a thickness not more than the thickness at which the high-viscosity material to be discharged does not adhere, and the tip of the discharge hole of the opening is opposite to the discharge side. , Characterized by being provided with a wall surface arranged substantially vertically.
【００１２】そして、上記において、その一部または全
体を開口部へ電圧を印加するための電極として配置した
もので、高粘度物質の媒体への形成は、必要に応じて吐
出手段内の高粘度物質に圧力をかけ、前記電極を介して
吐出手段の開口部と媒体間に所定電圧値のパルス電圧を
印加して、開口部に高粘度物質のメニスカスを縦長に伸
長した伸長部を形成した状態で、高粘度物質を吐出させ
るものであることを特徴とするものである。In the above, a part or the whole thereof is arranged as an electrode for applying a voltage to the opening, and the formation of the high-viscosity substance on the medium may be performed, if necessary, by using a high-viscosity material in the discharge means. A state in which a pressure is applied to the substance, a pulse voltage of a predetermined voltage value is applied between the opening of the ejection means and the medium through the electrode, and an elongated portion in which the meniscus of the high-viscosity substance is elongated vertically is formed in the opening. And ejects a high-viscosity substance.
【００１３】そしてまた、上記における、高粘度物質形
成方法が、ＰＤＰ用背面板へ蛍光体を形成するためのも
のであることを特徴とするものである。[0013] The method for forming a high-viscosity material described above is for forming a phosphor on a back plate for a PDP.
【００１４】[0014]
【作用】本発明の吐出手段は、このような構成にするこ
とにより、開口部から、１０００ｃｐｓ〜１０００００
０ｃｐｓの高粘度物質を吐出して媒体上に付着させて、
媒体上へ高粘度物質を形成する高粘度物質形成方法に用
いられる、下部に１つ以上の孔径５０μｍ〜１ｍｍφ程
度の円形または多角形のオリフィスからなる開口部を有
し、前記高粘度物質を充填し、高粘度物質を開口部から
吐出する吐出手段であって、開口部の肉厚部面から高粘
度物質１０が伝わることがない吐出手段、更には、安定
的なメニスカス形成を可能とする吐出手段の提供を可能
としている。即ち、開口部の吐出孔先端における、吐出
側の肉厚を、吐出される高粘度物質が付着しない肉厚以
下に薄くしていることにより、開口部の肉厚部面から高
粘度物質１０が伝わることがないようにしており、ま
た、開口部の吐出孔先端の、吐出側とは反対側に、ほぼ
鉛直方向に配設された壁面を備えていることにより、吐
出される高粘度物質のメニスカスないしメニスカスを伸
長した伸長部を安定させることを可能としている。特
に、開口部の吐出孔先端における、吐出側の肉厚を、吐
出される高粘度物質が付着しない肉厚以下に薄く、且
つ、開口部の吐出孔先端の、吐出側とは反対側に、ほぼ
鉛直方向に配設された壁面を備えていることにより、高
粘度物質の媒体への形成を制御し易いものとできる。具
体的には、その一部または全体を開口部へ電圧を印加す
るための電極として配置したもので、高粘度物質の媒体
への形成は、必要に応じて吐出手段内の高粘度物質に圧
力をかけ、前記電極を介して吐出手段の開口部と媒体間
に所定電圧値のパルス電圧を印加して、開口部に高粘度
物質のメニスカスを縦長に伸長した伸長部を形成した状
態で、高粘度物質を吐出させる吐出手段である場合に、
適用でき、特に、高粘度物質形成方法が、ＰＤＰ用背面
板へ蛍光体を形成するためのものである場合には有効で
ある。According to the discharge means of the present invention, by adopting such a structure, 1000 cps to 100000
0 cps high viscosity material is ejected and deposited on the medium,
At least one opening having a circular or polygonal orifice having a diameter of at least about 50 μm to 1 mmφ, which is used for a method for forming a high-viscosity substance on a medium, is used to fill the high-viscosity substance. Discharge means for discharging the high-viscosity substance from the opening, wherein the high-viscosity substance 10 is not transmitted from the thick part surface of the opening, and further, discharge capable of forming a stable meniscus. It is possible to provide means. That is, the thickness of the discharge side at the tip of the discharge hole of the opening is made thinner than the thickness at which the high-viscosity material to be discharged does not adhere, so that the high-viscosity substance 10 is removed from the surface of the thick part of the opening. It is prevented from transmitting, and by having a wall surface arranged in a substantially vertical direction on the side opposite to the discharge side at the tip of the discharge hole of the opening, the high viscosity substance to be discharged is It is possible to stabilize the meniscus or the elongated portion extending the meniscus. In particular, the thickness of the discharge side at the end of the discharge hole of the opening is thinner than the thickness at which the high-viscosity material to be discharged does not adhere, and the end of the discharge hole of the opening, on the side opposite to the discharge side, The provision of the wall surface arranged in a substantially vertical direction makes it easy to control the formation of the high-viscosity substance on the medium. Specifically, a part or the whole thereof is arranged as an electrode for applying a voltage to the opening, and the formation of the high-viscosity substance on the medium is performed, if necessary, by applying pressure to the high-viscosity substance in the ejection means. And applying a pulse voltage of a predetermined voltage value between the opening of the ejection means and the medium through the electrode, and forming a stretched portion in which the meniscus of the high-viscosity material extends vertically in the opening, In the case of a discharging means for discharging a viscous substance,
It is applicable, and is particularly effective when the method for forming a high-viscosity substance is for forming a phosphor on the back plate for PDP.
【００１５】[0015]
【発明の実施の形態】本発明の実施の形態を図を基に説
明する。図１（ａ）は本発明の吐出手段の実施の形態の
第１の例の概略断面図で、図１（ｂ）は図１（ａ）のＡ
０方向からみた図で、図２（ａ）、図２（ｂ）は、それ
ぞれ、本発明の吐出手段の実施の形態の第２の例、第３
の例の特徴部の概略断面図である。尚、図１（ａ）は図
１（ｂ）のＡ１−Ａ２での断面図である。図１、図２
中、１０はオリフィス部（ノズル部）、１１は開口、１
２は薄肉部、１２Ａは厚肉部、１２Ｓは厚肉部面（単に
面とも言う）、１３は壁部、１４は電極、２０は容器、
２１は高粘度物質（蛍光体層形成用組成物）、２１Ａは
伸長部、２３は電圧供給部、２５はエアー配管、３０は
吐下手段、４０は媒体（背面板）、５０はステージであ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a schematic cross-sectional view of a first example of an embodiment of the ejection means of the present invention, and FIG. 1B is a sectional view of A in FIG.
2 (a) and 2 (b) show a second example and a third example of the embodiment of the ejection means of the present invention, respectively.
It is a schematic sectional drawing of the characteristic part of the example of FIG. FIG. 1A is a cross-sectional view taken along line A1-A2 in FIG. 1 and 2
In the figure, 10 is an orifice part (nozzle part), 11 is an opening, 1
2 is a thin portion, 12A is a thick portion, 12S is a thick portion surface (also simply referred to as a surface), 13 is a wall portion, 14 is an electrode, 20 is a container,
21 is a high-viscosity substance (composition for forming a phosphor layer), 21A is an extension part, 23 is a voltage supply part, 25 is an air pipe, 30 is a discharge means, 40 is a medium (back plate), and 50 is a stage. .
【００１６】まず、本発明の吐出手段の実施の形態の第
１の例を図１に基づいて説明する。本例は、ＰＤＰ用の
背面基板上へ高粘度の蛍光体層形成用組成物（高粘度物
質２１）を形成するための吐出手段で、下部に複数の孔
径２５０μｍφ、孔長さ１．０ｍｍの円形のオリフィス
からなる開口部を有し、前記高粘度物質（蛍光体層形成
用組成物）２１を充填し、これを開口部から吐出するも
のである。尚、オリフィスの孔径は５０μｍ〜１ｍｍφ
程度のもので、孔長さは０．５ｍｍ〜２０ｍｍ程度のも
のが使用でき、オリフィスの孔径２００μｍ〜７００μ
ｍのものがより好ましい。高粘度物質２１は、開口部よ
りメニスカスを伸長した伸長部を形成した状態で垂れ流
され、媒体（背面板）４０の障壁（図示していない）間
へ充填された後、乾燥、加熱され、蛍光体層として障壁
間、障壁側面に形成される。本例においては、開口部１
１の吐出側の吐出孔先端における、吐出側の肉厚を、吐
出される高粘度物質である蛍光体層が付着しないよう
に、最先端で０して外側にテーパを設け、その肉厚を薄
くした薄肉部１２を設け、且つ、開口部１１の吐出孔先
端の、吐出側とは反対側に、吐出される高粘度物質２１
のメニスカスを安定させるための、ほぼ鉛直方向に配設
された壁面を持つ壁部１３を備えている。尚、ここで
は、吐出側とは、吐出手段３０の媒体４０に対する相対
的な移動方向（図１（ａ）の太矢印方向）とは、反対側
の方向である。そして、本例では、高粘度物質２１の媒
体４０への形成は、吐出手段３０内の高粘度物質２１に
圧力をかけて高粘度物質のメニスカスを形成し、更に前
記電極１４を介して吐出手段３０の開口部１１と媒体４
０間に所定電圧値のパルス電圧を印加して、開口部１１
に高粘度物質２１のメニスカスを縦長に伸長した伸長部
２１Ａを形成した状態で、高粘度物質２１を吐出させる
ものである。First, a first example of an embodiment of the discharging means of the present invention will be described with reference to FIG. This example is a discharge means for forming a high-viscosity phosphor layer forming composition (high-viscosity substance 21) on a rear substrate for PDP. It has an opening formed of a circular orifice, is filled with the high-viscosity substance (composition for forming a phosphor layer) 21, and is discharged from the opening. The orifice has a hole diameter of 50 μm to 1 mmφ.
The orifice has a hole length of about 0.5 mm to 20 mm, and the orifice has a hole diameter of 200 μm to 700 μm.
m is more preferred. The high-viscosity substance 21 is dripped down in a state of forming an elongated portion extending the meniscus from the opening, and after being filled between barriers (not shown) of the medium (back plate) 40, dried and heated, A phosphor layer is formed between the barriers and on the side surfaces of the barriers. In this example, the opening 1
The thickness of the discharge side at the tip of the discharge hole on the discharge side of 1 is set to 0 at the foremost end so as to prevent the phosphor layer, which is a high-viscosity substance to be discharged, from adhering. A thin viscous substance 21 to be discharged is provided on a side opposite to a discharge side of a front end of a discharge hole of the opening 11 by providing a thinned portion 12.
And a wall portion 13 having a wall surface arranged in a substantially vertical direction for stabilizing the meniscus. Here, the ejection side is the direction opposite to the direction in which the ejection means 30 moves relative to the medium 40 (the direction of the thick arrow in FIG. 1A). In this example, the high-viscosity substance 21 is formed on the medium 40 by applying pressure to the high-viscosity substance 21 in the discharge means 30 to form a meniscus of the high-viscosity substance, and further through the electrode 14. 30 openings 11 and medium 4
0, a pulse voltage of a predetermined voltage value is applied to the opening 11
The high-viscosity substance 21 is discharged in a state in which a meniscus of the high-viscosity substance 21 is elongated vertically to form an extension 21A.
【００１７】図１（ａ）に示すように、容器２０内に充
填された高粘度物質２１は、エアー配管２５からの高圧
エアーに押されながら、且つ、電圧供給部２３により、
電極１４へ、高電圧（矩形電圧）をかけられ、開口１１
先端より吐出されるが、薄肉部１２を設けおり、且つ壁
部１３を設けていることにより、開口１１より吐出され
た高粘度物質２１は、安定的に壁部１３の開口部側の壁
面を伝わり、垂れ媒体（背面板）４０へと到達できる。
そして、吐出手段３０は媒体（背面板）４０とは相対的
に太矢印の方向に移動されるため、高粘度物質２１を垂
れ流しながら媒体（背面板）４０の所定の領域に形成す
る。本例では、媒体４０は静止（固定）で、吐出手段３
０のみが移動する。勿論、媒体移動、吐出手段固定でも
良い。図１では詳しくは図示していないが、媒体（背面
板）４０の表面には、所定のピッチで障壁が設けられて
おり、これに対応した間隔で、図１（ｂ）に示すよう
に、開口１１が設けられている。通常、蛍光体層形成用
組成物（高粘度物質２１）は、Ｒ（赤）、Ｇ（緑）、Ｂ
（青）の各色毎に、形成するもので、開口は、障壁３ピ
ッチ分の間隔で離れて配置されている。各色の蛍光体用
の、吐出手段３０を用いて、各色蛍光体層を、伴行し
て、あるいは別個に、形成する。ステージ５０は、媒体
（背面板）４０を固定するものである。As shown in FIG. 1A, the high-viscosity substance 21 filled in the container 20 is pressed by the high-pressure air from the air pipe 25 and is supplied by the voltage supply unit 23.
A high voltage (rectangular voltage) is applied to the electrode 14 and the opening 11
The high-viscosity substance 21 discharged from the opening 11 stably discharges the wall surface on the opening side of the wall 13 because the thin portion 12 is provided and the wall 13 is provided. It can reach the hanging medium (back plate) 40.
Since the ejection unit 30 is moved in the direction of the thick arrow relative to the medium (back plate) 40, the high-viscosity material 21 is formed in a predetermined region of the medium (back plate) 40 while flowing down. In this example, the medium 40 is stationary (fixed) and the ejection unit 3
Only 0 moves. Of course, the medium may be moved and the ejection means may be fixed. Although not shown in detail in FIG. 1, barriers are provided at a predetermined pitch on the surface of the medium (back plate) 40, and at intervals corresponding to the barriers, as shown in FIG. An opening 11 is provided. Usually, the composition for forming a phosphor layer (high-viscosity substance 21) includes R (red), G (green), and B (green).
The openings are formed for each color of (blue), and the openings are arranged at intervals of three pitches of the barrier. Using the discharge means 30 for the phosphor of each color, a phosphor layer of each color is formed accompanying or separately. The stage 50 fixes the medium (back plate) 40.
【００１８】本例においては、オリフィス部１０は、容
器２０とは別体のもので、容器２０と合わせて、吐出手
段３０としたものである。オリフィス部１０は、通常、
機械加工して作製される。オリフィス部１０の材質とし
ては、セラミック、アルミナ、ガラス、ガラス＋雲母、
酸化ジルコニア等が挙げられ、容器２０の材質として
は、アルミ、ステンレス、銅、鉄等の金属、あるいは、
ＰＥＥＫ、テフロン、ＮＣナイロン等の樹脂が挙げられ
る。オリフィス部１０の開口１１の孔径は、５０μｍ〜
１ｍｍφ程度で、高粘度物質（蛍光体層形成用組成物）
としては、１０００ｃｐｓ〜１００００００ｃｐｓのも
のが適用できる。In this embodiment, the orifice section 10 is separate from the container 20 and is combined with the container 20 to form the discharge means 30. The orifice section 10 is usually
It is manufactured by machining. The material of the orifice portion 10 is ceramic, alumina, glass, glass + mica,
Zirconia oxide and the like, and the material of the container 20 is a metal such as aluminum, stainless steel, copper, iron, or
Examples include resins such as PEEK, Teflon, and NC nylon. The hole diameter of the opening 11 of the orifice part 10 is 50 μm or more.
Approximately 1mmφ, high viscosity material (composition for forming phosphor layer)
For example, 1000 cps to 1,000,000 cps can be applied.
【００１９】電圧供給部２３からの高電圧（矩形電圧）
としては、図３、図４にて説明したように、所定電圧
で、所定幅を持つものを使用する。蛍光体層（高粘度物
質）２１を背面板（媒体）４０へ形成するためには、電
圧としては、通常、１００Ｈｚ〜５ＫＨｚで、１ＫＶp-
p 〜５ＫＶp-p 、オフセット０〜±１０ＫＶの矩形電圧
が用いられる。場合によっては、適当な三角波、正弦波
でも良い。High voltage (rectangular voltage) from the voltage supply unit 23
As described with reference to FIGS. 3 and 4, one having a predetermined voltage and a predetermined width is used. In order to form the phosphor layer (high-viscosity substance) 21 on the back plate (medium) 40, the voltage is usually 100 Hz to 5 KHz and 1 KVp-
A rectangular voltage of p to 5 KVp-p and an offset of 0 to ± 10 KV is used. In some cases, an appropriate triangular wave or sine wave may be used.
【００２０】また、吐出させる蛍光体層形成用組成物
（高粘度物質２１）に含まれる粒子の径は、最大、吐出
開口径（５０μｍ〜１ｍｍ）のｌ／１０程度まで可能で
ある。本例に適用可能な蛍光体層形成用組成物２１とし
ては、蛍光体、バインダー樹脂、有機溶剤を混練してな
り、更に、低融点ガラスからなるガラスフリット、増粘
剤を加えても良い。The diameter of the particles contained in the composition for forming a phosphor layer (high-viscosity substance 21) to be discharged can be up to about 1/10 of the discharge opening diameter (50 μm to 1 mm). As the phosphor layer forming composition 21 applicable to the present embodiment, a phosphor, a binder resin, and an organic solvent may be kneaded, and a glass frit made of low-melting glass and a thickener may be added.
【００２１】バインダー樹脂は、セルロース誘導体或い
はアクリル共重合体で、具体的にはメチルセルロース、
エチルセルロース、エトキシセルロース、メチルヒドロ
キシエチルセルロース、メチルヒドロキシプロピルセル
ロース、メチルヒドロキシプロピルセルロースフタレー
ト、メチルヒドロキシプロピルセルロースアセテートサ
クシネート、ヒドロキシプロピルセルロース、セルロー
スプロピオネート、アセチルエチルセルロース、アセチ
ルセルロース、ブチルセルロース、ベンジルセルロース
等が挙げられる。The binder resin is a cellulose derivative or an acrylic copolymer, specifically, methyl cellulose,
Ethyl cellulose, ethoxycellulose, methylhydroxyethylcellulose, methylhydroxypropylcellulose, methylhydroxypropylcellulose phthalate, methylhydroxypropylcellulose acetate succinate, hydroxypropylcellulose, cellulose propionate, acetylethylcellulose, acetylcellulose, butylcellulose, benzylcellulose, etc. No.
【００２２】また、使用する増粘剤としては、カゼイ
ン、カゼインの塩等の蛋白質系、ポリビニルアルコー
ル、脂肪族アマイド、アクリル共重合物系、ポリビニル
ピロリドン等のポリビニル系、ポリアクリル酸ナトリウ
ム等のアクリル酸系、ポリエーテルジアルキルエステル
等のポリエーテル系、ビニルメチルエーテル−無水マレ
イン酸共重合物の部分エステル等の無水マレイン酸系、
及びアセチレングリコール等の有機系増粘剤、マイクロ
シリカ、カオリンベントナイト、タルク等の無機系増粘
剤が挙げられるが、どれも塗料分野において公知であ
る。これら増粘剤は、蛍光体層形成用組成物（高粘度物
質２１）１００重量部中で、０．５〜１０重量％を占め
る割合で使用することが好ましい。Examples of the thickener to be used include protein-based substances such as casein and casein salts, polyvinyl alcohols, aliphatic amides, acrylic copolymers, polyvinyl-based substances such as polyvinylpyrrolidone, and acrylic-based substances such as sodium polyacrylate. Acid type, polyether type such as polyether dialkyl ester, maleic anhydride type such as vinyl methyl ether-partial ester of maleic anhydride copolymer,
And an organic thickener such as acetylene glycol, and an inorganic thickener such as microsilica, kaolin bentonite and talc, all of which are known in the coatings field. These thickeners are preferably used in a proportion of 0.5 to 10% by weight in 100 parts by weight of the phosphor layer forming composition (high viscosity substance 21).
【００２３】蛍光体としては特に制限はなく、従来より
知られているものを使用できる。例えば、赤色蛍光体と
して、（Ｙ、Ｇｄ）ＢＯ3 ：Ｅｕ、ＹＯ3 ：Ｅｕ等、緑
色蛍光体として、Ｚｎ2 ＳｉＯ4 ：Ｍｎ、ＢａＡｌ12Ｏ
19：Ｍｎ、（Ｂａ、Ｓｒ、Ｍｇ）Ｏ・ａＡｌ2 Ｏ3 ：Ｍ
ｎ等、青色蛍光体として、ＢａＭｇＡｌ14Ｏ23：Ｅｕ、
ＢａＭｇＡｌ10Ｏ17：Ｅｕ等が挙げられる。There is no particular limitation on the phosphor, and any known phosphor can be used. For example, (Y, Gd) BO 3 : Eu, YO 3 : Eu and the like as red phosphors, and Zn 2 SiO 4 : Mn and BaAl 12 O as green phosphors.
19: Mn, (Ba, Sr , Mg) O · aAl 2 O 3: M
n such as BaMgAl 14 O 23 : Eu,
BaMgAl 10 O 17 : Eu and the like.
【００２４】有機溶剤としては、エーテル類、エーテル
エステル類、エステル類、アミド類、アルコール類、ケ
トン類、アセテート類、ケトンエステル類、グリコール
類、グリコールエステル類、スルホン類、スルホキシド
類、ハロゲン化炭化水素類及び炭化水素類が挙げられ
る。Examples of the organic solvent include ethers, ether esters, esters, amides, alcohols, ketones, acetates, ketone esters, glycols, glycol esters, sulfones, sulfoxides, and halogenated carbons. Hydrogens and hydrocarbons are included.
【００２５】開口部１３としては、ノズル、オリフィス
等のメニスカスを形成することができるものであれば良
い。The opening 13 may be any one that can form a meniscus such as a nozzle or an orifice.
【００２６】開口部１３の先端から、背面板１０までの
距離としては０．１ｍｍ〜１０ｍｍが好ましい。The distance from the tip of the opening 13 to the back plate 10 is preferably 0.1 mm to 10 mm.
【００２７】尚、更に安定的に、蛍光体層形成用組成物
（高粘度物質２１）の媒体（背面板）４０上への形成を
行うために、形成される側の媒体（背面板）４０の表面
全体に対し、除電を行ったり、あるいは、全体に対し帯
電を行っておき、媒体４０の表面部全体を電気的に均一
な状態としておく場合もある。In order to more stably form the phosphor layer forming composition (high-viscosity substance 21) on the medium (back plate) 40, the medium (back plate) 40 on which the phosphor layer is formed is formed. In some cases, static elimination may be performed on the entire surface of the medium 40, or charging may be performed on the entire surface to make the entire surface portion of the medium 40 electrically uniform.
【００２８】また、場合によっては、電極１４へ高電圧
を印加するため、放電対策として、所定値の放電防止用
の抵抗を、電圧供給部と電極１４との間に入れておく。In some cases, in order to apply a high voltage to the electrode 14, a discharge prevention resistor having a predetermined value is provided between the voltage supply unit and the electrode 14 as a measure against discharge.
【００２９】次に、本発明の吐出手段の実施の形態の第
２の例を図２（ａ）に挙げて、説明する。本例は、オリ
フィス部１０の形状が、第１の例と異なるもので、その
他については第１の例と同じであり、形状についてのみ
述べる。本例の場合、開口の最先端部の肉厚は０とし
て、外側へテーパーを設けて、回り全体を薄肉部１２に
している。本例の場合も、第１の例と同様、薄肉部１２
への、高粘度物質（蛍光体層）２１の付着を防止できる
ものてあるが、第１の例と異なり、壁部（図１の１３に
相当）が無いため、メニスカスの安定化は難しい。Next, a second example of the embodiment of the discharge means of the present invention will be described with reference to FIG. In this example, the shape of the orifice portion 10 is different from that of the first example, and the other points are the same as those of the first example. Only the shape will be described. In the case of this example, the thickness at the leading end of the opening is set to 0, and a taper is provided on the outer side, so that the entire periphery is a thin portion 12. Also in the case of this example, similarly to the first example, the thin portion 12
However, unlike the first example, there is no wall (corresponding to 13 in FIG. 1), so that it is difficult to stabilize the meniscus.
【００３０】次に、本発明の吐出手段の実施の形態の第
３の例を図２（ｂ）に挙げて、説明する。本例は、オリ
フィス部１０の形状が、第１の例と異なるもので、その
他については第１の例と同じであり、形状についてのみ
述べる。本例の場合、開口の最先端の吐出側は、従来と
同様（図６（ａ）の吐出手段と同様）で、薄肉部（図１
の１２に相当）とせず、厚肉（厚肉部１２Ａ）としてい
る。また、第１の例と同様、壁部１３を備えたもので、
メニスカスの安定化には効果あるが、厚肉（厚肉部１２
Ａ）の面１２Ｓへの付着が起こる構造で、結局、本例
は、第１の例と比べると、全体としては、媒体への高粘
度物質（蛍光体層）２１の形成を安定的には制御しずら
い。Next, a third embodiment of the discharge means according to the present invention will be described with reference to FIG. In this example, the shape of the orifice portion 10 is different from that of the first example, and the other points are the same as those of the first example. Only the shape will be described. In the case of the present example, the most discharge side of the opening is the same as the conventional one (similar to the discharge means in FIG. 6A) and the thin portion (FIG. 1).
12), but rather thick (thick portion 12A). In addition, similarly to the first example, it has a wall portion 13,
Although it is effective for stabilizing the meniscus, the thick portion (thick portion 12
A) is a structure in which adhesion to the surface 12S occurs. In the end, in this example, as compared with the first example, the formation of the high-viscosity substance (phosphor layer) 21 on the medium can be stably performed. It is hard to control.
【００３１】[0031]
【実施例】（実施例１）実施例１は、図１に示す実施の
形態の第１の例の吐出手段３０で、開口径は５００μｍ
φ、壁部１３の高さ５００μｍ、幅０μｍ、薄肉部１２
の外側テーパの角度および壁部１３の外側テーパー角度
は４５°である。実施例１の吐出手段３０を用い、周波
数２ＫＨｚ、７．５ＫＶの矩形高電圧を、電極１４にか
けながら、且つ、エアー圧２Ｋｇ／ｃｍ2 かけて、吐出
手段３０の開口から垂れ流して、ＰＤＰ用の背面板４０
の障壁（図示していない）へ、下記のＲ（赤）色用の蛍
光体形成用組成物（高粘度物質２１）を形成して、開口
の先端と媒体表面の間隔を種々とり、開口からの蛍光体
形成用組成物（高粘度物質２１）の吐出の安定性を確認
した。蛍光体層形成用組成物２１としては、蛍光体、バ
インダー樹脂、有機溶剤を混練してなり、粘度４０００
０ｃｐｓとしたものを用いた。尚、適時、増粘剤等を加
えても良い。赤色蛍光体として、（Ｙ、Ｇｄ）ＢＯ3 ：
Ｅｕ、ＹＯ3 ：Ｅｕを用い、有機溶剤としては、ブチル
カルビトールアセテート、ブトキエトキシエタノール、
エチルカルビトール、テキサノール、テルピネオールを
混合したものを用い、バインダー樹脂としては、エチル
セルロースを用いた。(Example 1) In Example 1, an ejection means 30 of the first example of the embodiment shown in FIG.
φ, height of wall portion 13 500 μm, width 0 μm, thin portion 12
And the outer taper angle of the wall 13 is 45 °. Using the discharge means 30 of Example 1, while applying a rectangular high voltage of 2 KHz and 7.5 KV to the electrode 14 and applying an air pressure of 2 Kg / cm 2 , it flows down from the opening of the discharge means 30 to produce a PDP. Back plate 40
The following R (red) phosphor-forming composition (high-viscosity substance 21) is formed on a barrier (not shown), and the distance between the tip of the opening and the surface of the medium is varied. Of the phosphor forming composition (high-viscosity substance 21) was confirmed. The phosphor layer forming composition 21 is prepared by kneading a phosphor, a binder resin, and an organic solvent, and has a viscosity of 4000.
A value of 0 cps was used. Incidentally, a thickener or the like may be added as appropriate. As a red phosphor, (Y, Gd) BO 3 :
Eu, YO 3 : Eu was used, and butyl carbitol acetate, butoxyethoxyethanol,
A mixture of ethyl carbitol, texanol, and terpineol was used, and ethyl cellulose was used as a binder resin.
【００３２】蛍光体形成用組成物（高粘度物質２１）の
吐出の安定性についての結果は、表１の通りであった。
尚、○印は安定性の良いことを意味し、×は安定性が良
くないことを意味する。Table 1 shows the results of the stability of discharge of the phosphor-forming composition (high-viscosity substance 21).
In addition, ○ means that the stability is good, and × means that the stability is not good.
【００３３】（実施例２）実施例２の吐出手段は、図２
（ｂ）に示すものと同じ形状のもので、開口径は５００
μｍφで、開口先端の厚肉部１２Ａの幅は１００μｍ、
外側のテーパー角度は４５°で、壁部については実施例
１と同じである。実施例２の吐出手段を用い、実施例１
の吐出手段の場合と同様の条件で、蛍光体形成用組成物
（高粘度物質２１）の吐出の安定性を確認した。結果
は、表１の通りである。(Embodiment 2) The discharge means of Embodiment 2 is shown in FIG.
It has the same shape as that shown in FIG.
μmφ, the width of the thick portion 12A at the tip of the opening is 100 μm,
The outer taper angle is 45 °, and the wall is the same as in the first embodiment. Example 1 using the discharging means of Example 2
Under the same conditions as in the case of the discharging means, the discharge stability of the phosphor-forming composition (high-viscosity substance 21) was confirmed. The results are as shown in Table 1.
【００３４】（実施例３）実施例３の吐出手段は、図６
（ａ）に示す従来のものと同じ形状で、開口径は５００
μｍφで、開口先端の厚肉部（図６（ａ）の１１２に相
当）の幅は１００μｍと薄くしたものである。外側のテ
ーパー角度は４５°である。実施例３の吐出手段を用
い、実施例１の吐出手段の場合と同様の条件で、蛍光体
形成用組成物（高粘度物質２１）の吐出の安定性を確認
した。結果は、表１の通りである。(Embodiment 3) The ejection means of Embodiment 3 is shown in FIG.
It has the same shape as the conventional one shown in FIG.
The width of the thick portion (corresponding to 112 in FIG. 6A) at the tip of the opening is reduced to 100 μm. The outer taper angle is 45 °. Using the ejection unit of Example 3, the ejection stability of the phosphor-forming composition (high-viscosity substance 21) was confirmed under the same conditions as those of the ejection unit of Example 1. The results are as shown in Table 1.
【００３５】（比較例）比較のため、比較例の吐出手段
にて、上記実施例１、実施例２の吐出手段の場合と同様
の条件で、蛍光体形成用組成物（高粘度物質２１）の吐
出の安定性を確認した。結果は、表１の通りである。比
較例の吐出手段は、図６（ａ）に示す、従来のもので、
開口径は５００μｍφで、開口先端の厚肉部（図６
（ａ）の１１２に相当）の幅は２５０μで、外側のテー
パー角度は４５°である。結果は、表１の通りであっ
た。(Comparative Example) For comparison, the composition for forming a phosphor (high-viscosity substance 21) was performed by the discharge means of the comparative example under the same conditions as those of the discharge means of Examples 1 and 2. Was confirmed to be stable. The results are as shown in Table 1. The ejection means of the comparative example is a conventional one shown in FIG.
The opening diameter is 500 μmφ, and the thick portion at the tip of the opening (FIG. 6)
(Corresponding to 112 in (a)) has a width of 250 μm and an outer taper angle of 45 °. The results were as shown in Table 1.
【００３６】[0036]
【表１】 [Table 1]
【００３７】上記のように、従来の吐出手段（比較例の
吐出手段）では、安定した条件領域が得られなかった
が、実施例１の吐出手段、実施例２の吐出手段、実施例
３の吐出手段では、安定した条件領域が得られた。特
に、実施例１の吐出手段の場合には、開口と媒体との間
隔に対する許容度が、実施例２の吐出手段、実施例３の
吐出手段の場合に比べ大きい。実施例１の吐出手段の場
合と、実施例２の吐出手段の違いより、開口部先端の吐
出側を薄肉とすることによる効果が見られ、実施例３の
吐出手段の場合と、比較例の吐出手段の違いからもり、
吐出側を薄肉とすることによる効果が見られる。実施例
２の吐出手段の場合と、実施例３の吐出手段の違いよ
り、壁部１３（図１（ａ））を設けることの効果が見ら
れる。As described above, the conventional discharge means (discharge means of the comparative example) could not obtain a stable condition area. However, the discharge means of Example 1, the discharge means of Example 2, and the discharge means of Example 3 In the ejection unit, a stable condition area was obtained. In particular, in the case of the ejection unit of the first embodiment, the tolerance for the distance between the opening and the medium is larger than that of the ejection unit of the second embodiment and the ejection unit of the third embodiment. Due to the difference between the discharge unit of the first embodiment and the discharge unit of the second embodiment, the effect of making the discharge side at the tip of the opening thinner is seen. The discharge unit of the third embodiment is different from the discharge unit of the comparative example. Because of the difference of the discharge means,
The effect of making the discharge side thinner is seen. The effect of providing the wall portion 13 (FIG. 1A) can be seen from the difference between the discharge unit of the second embodiment and the discharge unit of the third embodiment.
【００３８】また、実施例１の吐出手段にて、４０００
０ｃｐｓのＧ（緑）色用の蛍光体形成用組成物（高粘度
物質２１）を形成して、開口の先端と媒体表面の間隔を
種々とり、開口からの蛍光体形成用組成物（高粘度物質
２１）の吐出の安定性を確認したが、同様に、開口と媒
体との間隔が８００μｍ以下で安定していた。尚、蛍光
体層形成用組成物２１としては、蛍光体、バインダー樹
脂、有機溶剤を混練してなるものを用いた。この場合
も、適時、増粘剤等を加えても良い。緑色蛍光体とし
て、Ｚｎ2 ＳｉＯ4 ：Ｍｎ、ＢａＡｌ12Ｏ19：Ｍｎを用
い、有機溶剤としては、ブチルカルビトールアセテー
ト、ブトキエトキシエタノール、エチルカルビトール、
テキサノール、テルピネオールを混合したものを用い、
バインダー樹脂としては、エチルセルロースを用いた。Further, the discharge means of the first embodiment
A phosphor (G) (green) color forming composition (high-viscosity substance 21) is formed at 0 cps, the distance between the tip of the opening and the medium surface is varied, and the phosphor forming composition (high-viscosity It was confirmed that the ejection of the substance 21) was stable. Similarly, the gap between the opening and the medium was stable at 800 μm or less. As the composition 21 for forming a phosphor layer, a composition obtained by kneading a phosphor, a binder resin, and an organic solvent was used. Also in this case, a thickener or the like may be added as appropriate. As the green phosphor, Zn 2 SiO 4 : Mn and BaAl 12 O 19 : Mn were used, and as the organic solvent, butyl carbitol acetate, butoxyethoxyethanol, ethyl carbitol,
Using a mixture of Texanol and Terpineol,
Ethyl cellulose was used as the binder resin.
【００３９】更にまた、実施例１の吐出手段にて、４０
０００ｃｐｓのＢ（青）色用の蛍光体形成用組成物（高
粘度物質２１）を形成して、開口の先端と媒体表面の間
隔を種々とり、開口からの蛍光体形成用組成物（高粘度
物質２１）の吐出の安定性を確認したが、同様に、開口
と媒体との間隔が８００μｍ以下で安定していた。尚、
蛍光体層形成用組成物２１としては、蛍光体、バインダ
ー樹脂、有機溶剤を混練してなるものを用いた。この場
合も、適時、増粘剤等を加えても良い。青色蛍光体とし
て、ＢａＭｇＡｌ10Ｏ17：Ｅｕを用い、有機溶剤として
は、ブチルカルビトールアセテート、ブトキエトキシエ
タノール、エチルカルビトール、テキサノール、テルピ
ネオールを混合したものを用い、バインダー樹脂として
は、エチルセルロースを用いた。Further, the discharge means of the first embodiment
000 cps, a phosphor (B) (blue) composition for high-viscosity material (high-viscosity substance 21) is formed. It was confirmed that the ejection of the substance 21) was stable. Similarly, the gap between the opening and the medium was stable at 800 μm or less. still,
As the phosphor layer forming composition 21, a composition obtained by kneading a phosphor, a binder resin, and an organic solvent was used. Also in this case, a thickener or the like may be added as appropriate. BaMgAl 10 O 17 : Eu was used as the blue phosphor, and a mixture of butyl carbitol acetate, butoxyethoxyethanol, ethyl carbitol, texanol, and terpineol was used as the organic solvent, and ethyl cellulose was used as the binder resin. Using.
【００４０】更に、実施例１の吐出手段にて、上記の安
定性確認で用いた、赤色用の蛍光体組成物の粘度を、有
機溶剤、増粘剤等により調整して、１０００ｃｐｓと
し、上記と同様にその安定性を調べたが、開口と媒体と
の間隔が３００μｍ〜８００μｍの範囲で安定してい
た。また、実施例１の吐出手段にて、上記の安定性確認
で用いた、赤色用の蛍光体組成物の粘度を、有機溶剤、
増粘剤等により調整して、１００００００ｃｐｓとし
て、上記と同様にその安定性を調べたが、開口と媒体と
の間隔が３００μｍ〜８００μｍの範囲で安定してい
た。Further, the viscosity of the red phosphor composition used in the above-mentioned stability check was adjusted with an organic solvent, a thickener, etc. to 1000 cps by the discharging means of Example 1, and The stability was examined in the same manner as described above, and it was found that the distance between the opening and the medium was stable in the range of 300 to 800 μm. In addition, the viscosity of the phosphor composition for red used in the above-described stability confirmation by the ejection unit of Example 1 was determined using an organic solvent,
The stability was examined in the same manner as above by adjusting the viscosity with a thickener and the like at 1,000,000 cps, but the spacing between the opening and the medium was stable in the range of 300 μm to 800 μm.
【００４１】[0041]
【発明の効果】以上のように、本発明によれば、開口部
から、１０００ｃｐｓ〜１００００００ｃｐｓの高粘度
物質を吐出して媒体上に付着させて、媒体上へ高粘度物
質を形成する高粘度物質形成方法に用いられる、下部に
１つ以上の５０μｍ〜１ｍｍ程度の円形または多角形の
オリフィスからなる開口部を有し、前記高粘度物質を充
填し、高粘度物質を開口部から吐出する吐出手段であっ
て、開口部の肉厚部面から高粘度物質が伝わることがな
い吐出手段、更には、オリフィスからなる開口部のメニ
スカスの形成ないしメニスカスを伸長した伸長部の安定
的な形成を可能とする吐出手段の提供を可能とした。特
に、オリフィスからなる開口部と媒体との間隔（ギャッ
プ）を大きくしても安定して塗布できるようになった。
これにより、媒体上への高粘度物質の付着の制御が正常
に行うことができ、ＰＤＰ用の背面板への蛍光体層の形
成を実用的なものとした。As described above, according to the present invention, a high-viscosity material that forms a high-viscosity material on a medium by discharging a high-viscosity material of 1000 cps to 1,000,000 cps from an opening and attaching the material to the medium. Discharge means for use in the forming method, which has at least one opening formed of a circular or polygonal orifice of about 50 μm to 1 mm at a lower portion, fills the high-viscosity substance, and discharges the high-viscosity substance from the opening. In addition, it is possible to perform discharge means in which a high-viscosity substance is not transmitted from the thick part surface of the opening, and furthermore, it is possible to form a meniscus of the opening formed by the orifice or to stably form an extended part extending the meniscus. It is possible to provide a discharge unit that performs the discharge. In particular, even when the distance (gap) between the opening formed by the orifice and the medium is increased, the coating can be performed stably.
Thereby, the control of the adhesion of the high-viscosity substance on the medium can be normally performed, and the formation of the phosphor layer on the back plate for PDP is made practical.
【図１】図１（ａ）は本発明の吐出手段の実施の形態の
第１の例の概略図で、図１（ｂ）は図１（ａ）はＡ０方
向からみた図である。FIG. 1A is a schematic diagram of a first example of an embodiment of a discharge unit of the present invention, and FIG. 1B is a diagram of FIG. 1A viewed from the A0 direction.
【図２】図２（ａ）吐出手段の実施の形態の第２の例の
特徴部の概略断面図で、図２（ｂ）は吐出手段の実施の
形態の第３の例の特徴部の概略断面図である。FIG. 2A is a schematic cross-sectional view of a characteristic part of a second example of the embodiment of the discharging means, and FIG. 2B is a sectional view of a characteristic part of the third example of the embodiment of the discharging means. It is an outline sectional view.
【図３】吐出原理を説明するための図FIG. 3 is a diagram for explaining a discharge principle.
【図４】パルス電圧の印加と分離を説明するための図FIG. 4 is a diagram for explaining application and separation of a pulse voltage;
【図５】高粘度物質の分離制御を説明するための図FIG. 5 is a diagram for explaining separation control of a high-viscosity substance.
【図６】従来の吐出手段を説明するための図FIG. 6 is a view for explaining a conventional ejection unit.
１０ オリフィス部（ノズル部） １１、１１Ａ 開口 １２ 薄肉部 １２Ａ 厚肉部 １２Ｓ 厚肉部面（単に面とも言う） １３ 壁部 １４ 電極 ２０ 容器 ２１ 高粘度物質（蛍光体層形成用組
成物） ２１Ａ 伸長部 ２３ 電圧供給部 ２５ エアー配管 ３０ 吐出手段 ４０ 媒体（背面板） ５０ ステージ １１０ オリフィス部（ノズル部） １１１ 開口部 １１２ 厚肉部 １１２Ｓ 厚肉部面（単に面とも言う） １１４ 電極 １２０ 容器 １２１ 高粘度物質 １２１Ａ 伸長部 １２３ 電圧供給部 １３０ 吐出手段 １４０ 媒体 １５０ ステージDESCRIPTION OF SYMBOLS 10 Orifice part (nozzle part) 11, 11A Opening 12 Thin part 12A Thick part 12S Thick part surface (only called surface) 13 Wall part 14 Electrode 20 Container 21 High viscosity substance (composition for fluorescent substance layer formation) 21A Extension part 23 Voltage supply part 25 Air pipe 30 Discharge means 40 Medium (back plate) 50 Stage 110 Orifice part (nozzle part) 111 Opening part 112 Thick part 112S Thick part surface (also simply referred to as surface) 114 Electrode 120 Container 121 High viscosity substance 121A Extension section 123 Voltage supply section 130 Discharge means 140 Medium 150 Stage
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F041 AA05 AB01 BA10 BA12 BA34 5C028 FF16 HH14 5C040 FA01 FA02 GG09 JA13 MA22 MA23 MA24 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F041 AA05 AB01 BA10 BA12 BA34 5C028 FF16 HH14 5C040 FA01 FA02 GG09 JA13 MA22 MA23 MA24
Claims (5)
０００ｃｐｓの高粘度物質を吐出して媒体上に付着させ
て、媒体上へ高粘度物質を形成する高粘度物質形成方法
に用いられる、下部に１つ以上の孔径５０μｍ〜１ｍｍ
φ程度の円形または多角形のオリフィスからなる開口部
を有し、前記高粘度物質を充填し、高粘度物質を開口部
から吐出する吐出手段であって、開口部の吐出孔先端に
おける、吐出側の肉厚を、吐出される高粘度物質が付着
しない肉厚以下に薄くしていることを特徴とする吐出手
段。1. From the opening, 1000 cps to 1000 cps
000 cps high-viscosity material is ejected and adhered on the medium to form a high-viscosity material on the medium.
A discharge means having an opening made of a circular or polygonal orifice of about φ, filling the high-viscosity substance, and discharging the high-viscosity substance from the opening, the discharge side at the tip of the discharge hole of the opening. Discharging means, wherein the thickness of the high-viscosity material to be discharged is not more than the thickness at which the high-viscosity substance to be discharged does not adhere.
０００ｃｐｓの高粘度物質を吐出して媒体上に付着させ
て、媒体上へ高粘度物質を形成する高粘度物質形成方法
に用いられる、下部に１つ以上の孔径５０μｍ〜１ｍｍ
φ程度の円形または多角形のオリフィスからなる開口部
を有し、前記高粘度物質を充填し、高粘度物質を開口部
から吐出する吐出手段であって、開口部の吐出孔先端
の、吐出側とは反対側に、ほぼ鉛直方向に配設された壁
面を備えていることを特徴とする吐出手段。2. From the opening, 1000 cps to 1000 cps
000 cps high-viscosity material is ejected and adhered on the medium to form a high-viscosity material on the medium.
A discharge means having an opening made of a circular or polygonal orifice of about φ, filling the high-viscosity substance, and discharging the high-viscosity substance from the opening, the discharge side of the discharge hole tip of the opening, A discharge means having a wall surface arranged in a substantially vertical direction on the opposite side to the discharge means.
０００ｃｐｓの高粘度物質を吐出して媒体上に付着させ
て、媒体上へ高粘度物質を形成する高粘度物質形成方法
に用いられる、下部に１つ以上の孔径５０μｍ〜１ｍｍ
φ程度の円形または多角形のオリフィスからなる開口部
を有し、前記高粘度物質を充填し、高粘度物質を開口部
から吐出する吐出手段であって、開口部の吐出孔先端に
おける、吐出側の肉厚を、吐出される高粘度物質が付着
しない肉厚以下に薄くし、且つ、開口部の吐出孔先端
の、吐出側とは反対側に、ほぼ鉛直方向に配設された壁
面を備えていることを特徴とする吐出手段。3. From the opening, 1000 cps to 1000 cps.
000 cps high-viscosity material is ejected and adhered on the medium to form a high-viscosity material on the medium.
A discharge means having an opening made of a circular or polygonal orifice of about φ, filling the high-viscosity substance, and discharging the high-viscosity substance from the opening, the discharge side at the tip of the discharge hole of the opening. The wall thickness is set to be less than the wall thickness to which the high-viscosity substance to be discharged does not adhere, and the wall of the opening of the discharge hole at the end opposite to the discharge side is provided in a substantially vertical direction. Discharging means.
たは全体を開口部へ電圧を印加するための電極として配
置したもので、高粘度物質の媒体への形成は、必要に応
じて吐出手段内の高粘度物質に圧力をかけ、前記電極を
介して吐出手段の開口部と媒体間に所定電圧値のパルス
電圧を印加して、開口部に高粘度物質のメニスカスを縦
長に伸長した伸長部を形成した状態で、高粘度物質を吐
出させるものであることを特徴とする吐出手段。4. The method according to claim 1, wherein a part or the whole of the medium is arranged as an electrode for applying a voltage to the opening, and the high-viscosity substance is formed on the medium by a discharging means as necessary. Applying a pulse voltage of a predetermined voltage value between the opening of the ejection means and the medium through the electrode, applying a pressure to the high-viscosity substance in the inside, the extension section in which the meniscus of the high-viscosity substance extends vertically in the opening. Discharging means for discharging a high-viscosity substance in a state in which is formed.
形成方法が、ＰＤＰ用背面板へ蛍光体を形成するための
ものであることを特徴とする吐出手段。5. A discharge means according to claim 1, wherein the method for forming a high-viscosity substance is for forming a phosphor on a back plate for a PDP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21883799A JP4508315B2 (en) | 1999-08-02 | 1999-08-02 | Discharge means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21883799A JP4508315B2 (en) | 1999-08-02 | 1999-08-02 | Discharge means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001043800A true JP2001043800A (en) | 2001-02-16 |
| JP4508315B2 JP4508315B2 (en) | 2010-07-21 |
Family
ID=16726126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21883799A Expired - Fee Related JP4508315B2 (en) | 1999-08-02 | 1999-08-02 | Discharge means |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4508315B2 (en) |
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| JP2013066879A (en) * | 2011-09-26 | 2013-04-18 | Toshiba Corp | Film forming method and film forming device |
| JP2019063698A (en) * | 2017-09-28 | 2019-04-25 | Tdk株式会社 | Liquid discharge nozzle |
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|---|---|
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