JP2006210113A - Display device - Google Patents

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JP2006210113A
JP2006210113A JP2005019999A JP2005019999A JP2006210113A JP 2006210113 A JP2006210113 A JP 2006210113A JP 2005019999 A JP2005019999 A JP 2005019999A JP 2005019999 A JP2005019999 A JP 2005019999A JP 2006210113 A JP2006210113 A JP 2006210113A
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substrate
core member
sealing
front substrate
substrates
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JP2006210113A5 (en
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Takayuki Masunaga
孝幸 益永
Shinobu Obuchi
忍 大渕
Akiyoshi Yamada
晃義 山田
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Toshiba Corp
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Toshiba Corp
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<P>PROBLEM TO BE SOLVED: To provide a display device capable of simplifying a manufacturing process and capable of reducing the manufacturing cost. <P>SOLUTION: The sealing member 6 which seals the surrounding of a front substrate 2 and a rear substrate 4 has a core member 6a, formed of a metal wire of cross-sectionally nearly circular shape, and a sealing member 6b, in which this core member 6a is embedded. At the time of sealing, the core member 6a is supported so as not to contact the substrates 2, 4 and by melting the sealing member 6b, the front substrate 2 and the rear substrate 4 are sealed simultaneously. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、背面基板に設けた電子放出素子から電子を放出させて前面基板に設けた蛍光体層を励起発光させることによりカラー画像を表示する表示装置に関する。   The present invention relates to a display device that displays a color image by emitting electrons from an electron-emitting device provided on a back substrate and exciting and emitting a phosphor layer provided on the front substrate.

近年、偏平な平面パネル構造の真空外囲器を有する表示装置として、液晶ディスプレイ（ＬＣＤ）、フィールドエミッションディスプレイ（ＦＥＤ）、プラズマディスプレイ（ＰＤＰ）等が知られている。また、ＦＥＤの一種として、表面伝導型の電子放出素子を備えた表示装置（以下、ＳＥＤと称する）の開発が進められている。   In recent years, a liquid crystal display (LCD), a field emission display (FED), a plasma display (PDP), and the like are known as a display device having a flat envelope having a flat panel structure. In addition, as a kind of FED, a display device (hereinafter referred to as SED) including a surface conduction electron-emitting device has been developed.

ＳＥＤは、所定の隙間を置いて対向配置された前面基板および背面基板を有する。これらの基板は、矩形枠状の側壁を介して周縁部を互いに接合され、内部を真空にされて偏平な表示パネルを構成している。   The SED has a front substrate and a rear substrate that are opposed to each other with a predetermined gap. These substrates are joined to each other at peripheral portions via rectangular frame-shaped side walls, and the inside is evacuated to form a flat display panel.

前面基板の内面には３色の蛍光体層に重ねてメタルバックを有する蛍光体スクリーンが形成され、背面基板の内面には蛍光体層を励起発光させる電子を放出する多数の電子放出素子が整列配置されている。また、背面基板の内面上には、電子放出素子を駆動するための多数本の配線がマトリックス状に設けられ、その端部は真空外囲器の外部に引き出されている。   On the inner surface of the front substrate, a phosphor screen having a metal back is formed on the phosphor layer of three colors, and on the inner surface of the rear substrate, a large number of electron-emitting devices that emit electrons that excite the phosphor layer are aligned. Has been placed. A large number of wires for driving the electron-emitting devices are provided in a matrix on the inner surface of the rear substrate, and the end portions are drawn out of the vacuum envelope.

前面基板と背面基板の間には板状或いは柱状の複数のスペーサが設けられている。これらスペーサは、前面基板および背面基板の内面に当接することで、大気圧荷重を支えて基板間の隙間を維持するよう機能する。   A plurality of plate-like or columnar spacers are provided between the front substrate and the rear substrate. These spacers function to support the atmospheric pressure load and maintain a gap between the substrates by contacting the inner surfaces of the front substrate and the rear substrate.

このＳＥＤを動作させる場合、基板間に１０［ｋＶ］程度の高電圧を与え、配線に接続した駆動回路を介して各電子放出素子に選択的に駆動電圧を印加する。これにより、各電子放出素子から選択的に電子ビームが放出され、これら電子ビームが、対応する蛍光体層に照射され、蛍光体層が励起発光されてカラー画像が表示されるようになっている。   When operating this SED, a high voltage of about 10 [kV] is applied between the substrates, and a drive voltage is selectively applied to each electron-emitting device via a drive circuit connected to the wiring. Thereby, an electron beam is selectively emitted from each electron-emitting device, and the corresponding phosphor layer is irradiated with the electron beam, and the phosphor layer is excited and emitted to display a color image. .

表示パネルを製造する場合、まず、蛍光体スクリーンを形成した前面基板、および複数の電子放出素子を形成し複数のスペーサおよび側壁を接合した背面基板を用意する。側壁は、例えばフリットガラスを介して背面基板の周縁部に予め接合しておく。また、側壁の上面および前面基板の対向する周縁部には、封着材としてインジウムなどの低融点金属を予め塗布しておく。そして、これらの基板を真空チャンバ内に配置して対向させ、封着材を溶融して側壁上面と前面基板の周縁部を封着する（例えば、特許文献１参照。）。   When manufacturing a display panel, first, a front substrate on which a phosphor screen is formed, and a rear substrate on which a plurality of electron-emitting devices are formed and a plurality of spacers and side walls are bonded are prepared. The side wall is bonded in advance to the peripheral edge portion of the rear substrate through, for example, frit glass. In addition, a low melting point metal such as indium is applied in advance as a sealing material to the upper surface of the side wall and the peripheral edge of the front substrate facing each other. Then, these substrates are arranged in the vacuum chamber so as to face each other, and the sealing material is melted to seal the side wall upper surface and the peripheral portion of the front substrate (for example, refer to Patent Document 1).

しかし、この製造方法によると、枠状の側壁をフリットガラスを用いて背面基板に予め接合し、真空チャンバ内に投入した後、封着材を溶融して側壁上面と前面基板周縁部を封着する必要があり、側壁の封着にかかる作業工程が多くなり、表示パネルの製造に要する作業時間が長くなり、製造コストが増大する問題があった。
特開２００３−０６８２３８号公報 However, according to this manufacturing method, the frame-shaped side wall is pre-bonded to the rear substrate using frit glass, and after being put in the vacuum chamber, the sealing material is melted to seal the upper surface of the side wall and the peripheral portion of the front substrate. There is a problem that the number of work steps for sealing the side walls increases, the work time required for manufacturing the display panel becomes long, and the manufacturing cost increases.
JP 2003-068238 A

この発明の目的は、製造工程を簡略化でき製造コストを低減できる表示装置を提供することにある。   An object of the present invention is to provide a display device that can simplify the manufacturing process and reduce the manufacturing cost.

上記目的を達成するため、この発明の表示装置は、複数の蛍光体層を有する前面基板と、上記複数の蛍光体層に対応した複数の電子放出素子を有する背面基板と、上記前面基板および背面基板の周縁部同士を封着した封着部材と、を有し、上記封着部材は、上記周縁部に沿って設けられる芯部材と、この芯部材を埋設するとともに該芯部材と上記各基板を封止する封止材と、を有する。   In order to achieve the above object, a display device according to the present invention includes a front substrate having a plurality of phosphor layers, a back substrate having a plurality of electron-emitting devices corresponding to the plurality of phosphor layers, and the front substrate and the back surface. A sealing member that seals the peripheral edge portions of the substrates, and the sealing member includes a core member provided along the peripheral edge portion, and the core member and each of the substrates embedded therein. And a sealing material for sealing.

上記発明によると、芯部材を埋設した封止材を前面基板と背面基板の周縁部間に配置し、これら封着部材により前面基板と背面基板の周縁部同士を同時に封着するようにした。このため、封着工程を簡略化でき、表示装置の製造コストを低減できる。   According to the above invention, the sealing material in which the core member is embedded is disposed between the peripheral portions of the front substrate and the back substrate, and the peripheral portions of the front substrate and the back substrate are simultaneously sealed by these sealing members. For this reason, a sealing process can be simplified and the manufacturing cost of a display apparatus can be reduced.

この発明の表示装置は、上記のような構成および作用を有しているので、製造工程を簡略化でき製造コストを低減できる。   Since the display device of the present invention has the above-described configuration and operation, the manufacturing process can be simplified and the manufacturing cost can be reduced.

以下、図面を参照しながら、この発明の実施の形態について詳細に説明する。
始めに、図１乃至図３を参照して、この発明の実施の形態に係る表示装置の一例として、ＳＥＤ（Surface-conduction Electron-emitter Display）について説明する。図１は、前面基板２を部分的に切り欠いた状態のＳＥＤの真空外囲器１０（以下、表示パネル１０と称する場合もある）を示す斜視図であり、図２は、図１の真空外囲器１０を線II-IIに沿って切断した断面図であり、図３は、図２の断面を部分的に拡大した部分拡大断面図である。図１乃至図３において、表示パネル１０の内部構造は、説明を分かり易くするため、適宜、構成を拡大し且つ概略的に示してある。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, an SED (Surface-conduction Electron-emitter Display) will be described as an example of a display device according to an embodiment of the present invention with reference to FIGS. FIG. 1 is a perspective view showing an SED vacuum envelope 10 (hereinafter also referred to as a display panel 10) in a state where a front substrate 2 is partially cut away. FIG. FIG. 3 is a cross-sectional view of the envelope 10 taken along line II-II, and FIG. 3 is a partially enlarged cross-sectional view in which the cross-section of FIG. 2 is partially enlarged. 1 to 3, the internal structure of the display panel 10 is appropriately enlarged and schematically shown for easy understanding.

図１乃至図３に示すように、表示パネル１０は、それぞれ矩形のガラス板からなる前面基板２および背面基板４を備え、これらの基板は約１．０〜２．０ｍｍの隙間をおいて互いに平行に対向配置されている。なお、背面基板４は、前面基板２より１回り大きいサイズを有する。また、前面基板２および背面基板４は、後述する封着部材６を介して周縁部同士が接合され、内部が真空の扁平な平面パネル構造の真空外囲器１０を構成している。   As shown in FIGS. 1 to 3, the display panel 10 includes a front substrate 2 and a rear substrate 4 each made of a rectangular glass plate, and these substrates are separated from each other with a gap of about 1.0 to 2.0 mm. Opposed in parallel. The back substrate 4 has a size one size larger than the front substrate 2. Further, the front substrate 2 and the rear substrate 4 are joined to each other through a sealing member 6 described later, and constitute a vacuum envelope 10 having a flat flat panel structure in which the inside is a vacuum.

前面基板２の内面には画像表示面として機能する蛍光体スクリーン１２が形成されている。この蛍光体スクリーン１２は、赤、青、緑の蛍光体層Ｒ、Ｇ、Ｂ、および遮光層１１を並べて構成され、重ねてアルミニウム等からなるメタルバック１４を有する。蛍光体層Ｒ、Ｇ、Ｂは、ストライプ状あるいはドット状に形成されている。   A phosphor screen 12 that functions as an image display surface is formed on the inner surface of the front substrate 2. The phosphor screen 12 is configured by arranging red, blue, and green phosphor layers R, G, and B and a light shielding layer 11 and has a metal back 14 made of aluminum or the like. The phosphor layers R, G, and B are formed in stripes or dots.

背面基板４の内面には、蛍光体スクリーン１２の蛍光体層Ｒ、Ｇ、Ｂを励起発光させるための電子ビームを放出する多数の表面伝導型の電子放出素子１６が設けられている。これらの電子放出素子１６は、画素毎、すなわち蛍光体層Ｒ、Ｇ、Ｂ毎に対応して複数列および複数行に配列されている。各電子放出素子１６は、図示しない電子放出部、この電子放出部に電圧を印加する一対の素子電極等で構成されている。また、背面基板４の内面上には、各電子放出素子１６に駆動電圧を与えるための多数本の配線１８がマトリックス状に設けられ、その端部は真空外囲器１０の外部に引き出されている。   On the inner surface of the back substrate 4, a number of surface conduction electron-emitting devices 16 that emit electron beams for exciting and emitting the phosphor layers R, G, and B of the phosphor screen 12 are provided. These electron-emitting devices 16 are arranged in a plurality of columns and a plurality of rows corresponding to each pixel, that is, for each of the phosphor layers R, G, and B. Each electron-emitting device 16 includes an electron emitting portion (not shown) and a pair of device electrodes for applying a voltage to the electron emitting portion. Further, on the inner surface of the back substrate 4, a large number of wirings 18 for applying a driving voltage to the respective electron-emitting devices 16 are provided in a matrix shape, and end portions thereof are drawn out of the vacuum envelope 10. Yes.

封着部材６は、前面基板２および背面基板４の周縁部に沿って設けられる芯部材６ａ、およびこの芯部材６ａを埋設するとともに芯部材６ａと各基板２、４の内面を密閉状態で封止する封止材６ｂを有する。本実施の形態では、芯部材６ａは、断面略円形の金属ワイヤにより形成され、封止材６ｂは、インジウム、スズ、スズに例えば銀やチタンなどを微量に混ぜた合金等、融点が２５０℃以下の低融点金属により構成されている。なお、前面基板２および背面基板４の内面には、それぞれ、封止材６ｂに対する濡れを確保するため、銀ペーストなどの下地材１９が予め塗布される。   The sealing member 6 embeds the core member 6a provided along the peripheral portions of the front substrate 2 and the back substrate 4 and the core member 6a and seals the core member 6a and the inner surfaces of the substrates 2 and 4 in a sealed state. It has the sealing material 6b which stops. In the present embodiment, the core member 6a is formed of a metal wire having a substantially circular cross section, and the sealing material 6b is made of indium, tin, an alloy obtained by mixing a small amount of, for example, silver or titanium, and a melting point of 250 ° C. The following low melting point metals are used. A base material 19 such as a silver paste is applied in advance to the inner surfaces of the front substrate 2 and the rear substrate 4 in order to ensure wetting with respect to the sealing material 6b.

また、表示パネル１０は、前面基板２と背面基板４の間にガラスからなる複数の細長い板状のスペーサ８を備えている。本実施の形態において、スペーサ８は、複数の細長いガラス板としたが、多数の柱状のスペーサでも良い。各スペーサ８は、上述した蛍光体スクリーン１２のメタルバック１４および遮光層１１を介して前面基板２の内面に当接する上端８ａ、および背面基板４の内面上に設けられた配線１８上に当接する下端８ｂを有する。しかして、これら複数のスペーサ８は、前面基板２および背面基板４の外側から作用する大気圧荷重を支持し、基板間の間隔を所定値に維持している。   The display panel 10 includes a plurality of elongated plate-like spacers 8 made of glass between the front substrate 2 and the rear substrate 4. In the present embodiment, the spacer 8 is a plurality of elongated glass plates, but may be a plurality of columnar spacers. Each spacer 8 abuts on the upper end 8 a that abuts on the inner surface of the front substrate 2 via the metal back 14 and the light shielding layer 11 of the phosphor screen 12 and the wiring 18 provided on the inner surface of the rear substrate 4. It has a lower end 8b. Thus, the plurality of spacers 8 support the atmospheric pressure load acting from the outside of the front substrate 2 and the back substrate 4 and maintain the distance between the substrates at a predetermined value.

さらに、ＳＥＤは、前面基板２のメタルバック１４にアノード電圧を印加する図示しない電圧供給部を備えている。電圧供給部は、例えば、メタルバック１４に１０［ｋＶ］程度の高電圧を印加することにより、蛍光体スクリーン１２の電位を高くする。これにより、接地された背面基板４と前面基板２との間に１０［ｋＶ］程度の電位差が形成される。   Further, the SED includes a voltage supply unit (not shown) that applies an anode voltage to the metal back 14 of the front substrate 2. For example, the voltage supply unit increases the potential of the phosphor screen 12 by applying a high voltage of about 10 [kV] to the metal back 14. As a result, a potential difference of about 10 [kV] is formed between the grounded back substrate 4 and front substrate 2.

そして、上記ＳＥＤにおいて、画像を表示する場合、配線１８に接続した図示しない駆動回路を介して電子放出素子１６の素子電極間に電圧を与え、任意の電子放出素子１６の電子放出部から電子ビームを放出するとともに、メタルバック１４にアノード電圧を印加する。電子放出部から放出された電子ビームは、アノード電圧により加速され、蛍光体スクリーン１２に照射される。これにより、蛍光体スクリーン１２の蛍光体層Ｒ、Ｇ、Ｂが励起されて発光し、カラー画像を表示する。   In the SED, when an image is displayed, a voltage is applied between the element electrodes of the electron-emitting device 16 via a drive circuit (not shown) connected to the wiring 18, and an electron beam is emitted from the electron-emitting portion of any electron-emitting device 16 And an anode voltage is applied to the metal back 14. The electron beam emitted from the electron emitting portion is accelerated by the anode voltage and is applied to the phosphor screen 12. Thereby, the phosphor layers R, G, and B of the phosphor screen 12 are excited to emit light, and a color image is displayed.

また、上記構造の表示パネル１０を製造する場合、予め、蛍光体スクリーン１２の設けられた前面基板２を用意し、電子放出素子１６および配線１８が設けられているとともにスペーサ８が接合された背面基板４を用意しておく。そして、これら前面基板２、および背面基板４の周縁部間に上述した構成の封着部材６を配置し、図示しない真空チャンバ内で２枚の基板２、４を対向配置し、真空チャンバ内を真空排気した後、前面基板２と背面基板４の周縁部同士を封着する。   When the display panel 10 having the above structure is manufactured, the front substrate 2 provided with the phosphor screen 12 is prepared in advance, and the back surface on which the electron-emitting devices 16 and the wiring 18 are provided and the spacer 8 is bonded. A substrate 4 is prepared. Then, the sealing member 6 having the above-described configuration is disposed between the peripheral portions of the front substrate 2 and the rear substrate 4, and the two substrates 2 and 4 are disposed to face each other in a vacuum chamber (not shown), After evacuation, the peripheral portions of the front substrate 2 and the back substrate 4 are sealed.

以下、図４乃至図７を参照して、上述した封着部材６についてより詳細に説明する。
図４に示すように、上述した実施の形態の封着部材６は、断面略円形の金属ワイヤを芯部材６ａとし、この芯部材６ａをインジウムからなる封止材６ｂに埋設して構成され、前面基板２および背面基板４の周縁部間に矩形枠状に配置される。このように、封着部材６を構成することで、基板周縁部の封着工程を簡略化でき、表示パネル１０の製造コストを低減できる。 Hereinafter, the sealing member 6 described above will be described in more detail with reference to FIGS. 4 to 7.
As shown in FIG. 4, the sealing member 6 according to the above-described embodiment is configured by using a metal wire having a substantially circular cross section as a core member 6 a and embedding the core member 6 a in a sealing material 6 b made of indium. A rectangular frame is disposed between the peripheral portions of the front substrate 2 and the back substrate 4. In this manner, by forming the sealing member 6, it is possible to simplify the process of sealing the peripheral edge of the substrate and reduce the manufacturing cost of the display panel 10.

つまり、基板の封着工程では、上記構造の枠状の封着部材６を基板２、４の周縁部間に配置し、封止材６ｂを加熱溶融する。このとき、芯部材６ａが前面基板２および背面基板４のいずれにも接触しないように芯部材６ａの端部を支持し、芯部材６ａを埋設した封止材６ｂを溶融する。これにより、芯部材６ａと前面基板２の内面を密閉状態で封止でき、同時に、芯部材６ａと背面基板４の内面を密閉状態で封止できる。言い換えると、１回の封着工程で２枚の基板２、４の周縁部に対して芯部材６ａを同時に接合できる。   That is, in the substrate sealing step, the frame-shaped sealing member 6 having the above structure is disposed between the peripheral portions of the substrates 2 and 4, and the sealing material 6 b is heated and melted. At this time, the end of the core member 6a is supported so that the core member 6a does not come into contact with either the front substrate 2 or the back substrate 4, and the sealing material 6b in which the core member 6a is embedded is melted. Thereby, the core member 6a and the inner surface of the front substrate 2 can be sealed in a sealed state, and at the same time, the core member 6a and the inner surface of the back substrate 4 can be sealed in a sealed state. In other words, the core member 6a can be simultaneously bonded to the peripheral portions of the two substrates 2 and 4 in one sealing step.

図５には、上述した封着部材６の変形例を示してある。この例では、断面略円形の芯部材６ａの代りに、断面略楕円形の芯部材２１を用いた。特に、楕円形の短軸が２枚の基板２、４と略直交するように芯部材２１を配置した。言い換えると、前面基板２の内面および背面基板４の内面に対向する芯部材２１の表面の曲率が比較的大きくなるようにした。これにより、図４で説明した封着部材６と比較して、封着部における疲労寿命を延長できる。   FIG. 5 shows a modification of the sealing member 6 described above. In this example, a core member 21 having a substantially elliptical cross section is used instead of the core member 6a having a substantially circular cross section. In particular, the core member 21 is arranged such that the elliptical short axis is substantially orthogonal to the two substrates 2 and 4. In other words, the curvature of the surface of the core member 21 facing the inner surface of the front substrate 2 and the inner surface of the rear substrate 4 is made relatively large. Thereby, compared with the sealing member 6 demonstrated in FIG. 4, the fatigue life in a sealing part can be extended.

つまり、図４で説明した封着部材６のように断面略円形の芯部材６ａを用いると、前面基板２と背面基板４との間に熱膨張の違いを生じ封着部にせん断応力を生じたときに、芯部材６ａの上部と前面基板２の内面との間、および芯部材６ａの下部と背面基板４の内面との間に応力が集中し、疲労寿命が低下する要因となることが考えられる。しかし、図５で説明した芯部材２１のように、基板２、４に対向する面の曲率を大きくすることで、芯部材２１と基板２、４との間の応力の集中を緩和でき、疲労寿命の低下を抑制できる。   That is, when the core member 6a having a substantially circular cross section is used as in the sealing member 6 described with reference to FIG. 4, a difference in thermal expansion occurs between the front substrate 2 and the rear substrate 4, and shear stress is generated in the sealing portion. The stress concentrates between the upper portion of the core member 6a and the inner surface of the front substrate 2 and between the lower portion of the core member 6a and the inner surface of the rear substrate 4, which may cause a decrease in fatigue life. Conceivable. However, the stress concentration between the core member 21 and the substrates 2 and 4 can be reduced by increasing the curvature of the surface facing the substrates 2 and 4 like the core member 21 described in FIG. It is possible to suppress a decrease in life.

封着部の応力集中による疲労寿命を延長することのできる他の封着部材の例を図６に示す。この例では、略矩形の断面を有する芯部材２２を用いた。この芯部材２２は、前面基板２および背面基板４に対向する面が略平らにされ、応力集中をより緩和できることが解る。   An example of another sealing member capable of extending the fatigue life due to stress concentration at the sealing portion is shown in FIG. In this example, the core member 22 having a substantially rectangular cross section is used. It can be seen that the core member 22 has a substantially flat surface facing the front substrate 2 and the back substrate 4 and can further alleviate stress concentration.

また、図７に示すさらに他の例では、図４で説明した断面略円形の芯部材６ａの基板２、４に対向する面を平らに潰した形状の芯部材２３を用いた。この芯部材２３を用いても、上述した芯部材２２を用いた場合と同様に、応力の集中を緩和できる。   Further, in still another example shown in FIG. 7, the core member 23 having a shape obtained by flattening the surface of the core member 6a having a substantially circular cross section described in FIG. Even if this core member 23 is used, the concentration of stress can be reduced as in the case where the above-described core member 22 is used.

以上のように、本発明によると、芯部材６ａを封止材６ｂに埋設した封着部材６を用いたため、前面基板２と背面基板４の周縁部同士を封着する封着工程を簡略化でき、表示パネル１０の製造工程を簡略化でき、パネルの製造コストを低減できる。   As described above, according to the present invention, since the sealing member 6 in which the core member 6a is embedded in the sealing material 6b is used, the sealing process for sealing the peripheral portions of the front substrate 2 and the rear substrate 4 is simplified. The manufacturing process of the display panel 10 can be simplified, and the manufacturing cost of the panel can be reduced.

また、本発明によると、前面基板２および背面基板４に対向する面が潰れた断面形状を有する金属ワイヤを芯部材とし、この芯部材を封止材に埋設して封着部材を構成したため、前面基板２と背面基板４との間に熱サイクルによる熱膨張の違いを生じたとき、せん断応力が封着部で局所的に集中することを防止でき、疲労寿命を延長できる。   In addition, according to the present invention, a metal wire having a cross-sectional shape in which the surfaces facing the front substrate 2 and the rear substrate 4 are crushed is used as a core member, and the core member is embedded in a sealing material to constitute a sealing member. When a difference in thermal expansion occurs between the front substrate 2 and the rear substrate 4 due to a thermal cycle, it is possible to prevent the shear stress from being concentrated locally at the sealing portion, and to extend the fatigue life.

なお、この発明は、上述した実施の形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上述した実施の形態に開示されている複数の構成要素の適宜な組み合わせにより種々の発明を形成できる。例えば、上述した実施の形態に示される全構成要素から幾つかの構成要素を削除しても良い。更に、異なる実施の形態に亘る構成要素を適宜組み合わせても良い。   Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.

例えば、上述した実施の形態では、封着部材の芯部材として、断面形状が円形、楕円形、矩形などである場合について説明したが、これに限らず、前面基板２および背面基板４の少なくとも一方に対向する面が平らに潰れた断面形状であることが望ましい。   For example, in the above-described embodiment, the case where the cross-sectional shape is a circle, an ellipse, a rectangle, or the like has been described as the core member of the sealing member. However, the present invention is not limited thereto, and at least one of the front substrate 2 and the rear substrate 4 It is desirable that the cross-sectional shape in which the surface facing the surface is flattened.

この発明の実施の形態に係るＳＥＤの真空外囲器を示す外観斜視図。1 is an external perspective view showing a vacuum envelope of an SED according to an embodiment of the present invention. 図１の真空外囲器を線II−IIに沿って切断した断面斜視図。FIG. 2 is a cross-sectional perspective view of the vacuum envelope of FIG. 1 cut along line II-II. 図２の断面を部分的に拡大して示す部分拡大断面図。The partial expanded sectional view which expands and shows the cross section of FIG. 2 partially. 前面基板と背面基板の周縁部間を封着する封着部材の構造を示す断面図。Sectional drawing which shows the structure of the sealing member which seals between the peripheral parts of a front substrate and a back substrate. 封着部材の変形例を示す断面図。Sectional drawing which shows the modification of a sealing member. 封着部材の他の変形例を示す断面図。Sectional drawing which shows the other modification of a sealing member. 封着部材のさらに他の変形例を示す断面図。Sectional drawing which shows the other modification of a sealing member.

符号の説明Explanation of symbols

２…前面基板、４…背面基板、６…封着部材、６ａ、２１、２２、２３…芯部材、６ｂ…封止材、８…スペーサ、１０…真空外囲器（表示パネル）、１２…蛍光体スクリーン、１４…メタルバック、１６…電子放出素子、１８…配線、１９…下地材。   DESCRIPTION OF SYMBOLS 2 ... Front substrate, 4 ... Back substrate, 6 ... Sealing member, 6a, 21, 22, 23 ... Core member, 6b ... Sealing material, 8 ... Spacer, 10 ... Vacuum envelope (display panel), 12 ... Phosphor screen, 14 ... metal back, 16 ... electron-emitting device, 18 ... wiring, 19 ... base material.

Claims (5)

複数の蛍光体層を有する前面基板と、
上記複数の蛍光体層に対応した複数の電子放出素子を有する背面基板と、
上記前面基板および背面基板の周縁部同士を封着した封着部材と、を有し、
上記封着部材は、上記周縁部に沿って設けられる芯部材と、この芯部材を埋設するとともに該芯部材と上記各基板を封止する封止材と、を有することを特徴とする表示装置。 A front substrate having a plurality of phosphor layers;
A back substrate having a plurality of electron-emitting devices corresponding to the plurality of phosphor layers;
A sealing member that seals the peripheral portions of the front substrate and the rear substrate, and
The sealing member includes a core member provided along the peripheral edge, and a sealing material that embeds the core member and seals the core member and each of the substrates. . 上記芯部材は、金属ワイヤにより形成されており、上記封止材は、低融点金属で構成されていることを特徴とする請求項１に記載の表示装置。   The display device according to claim 1, wherein the core member is made of a metal wire, and the sealing material is made of a low melting point metal. 上記金属ワイヤは、短軸が上記各基板と略直交する略楕円形の断面を有することを特徴とする請求項２に記載の表示装置。   The display device according to claim 2, wherein the metal wire has a substantially elliptical cross section whose minor axis is substantially orthogonal to each of the substrates. 上記金属ワイヤは、上記各基板に対向する面が平らに潰れた形状を有することを特徴とする請求項２に記載の表示装置。   The display device according to claim 2, wherein the metal wire has a shape in which a surface facing each of the substrates is flattened. 上記芯部材と各基板との間には封止材が少なくとも介在され、上記芯部材と各基板とは非接触状態で配置されることを特徴とする請求項１乃至請求項４のいずれか１項に記載の表示装置。   The sealing member is interposed between the core member and each substrate, and the core member and each substrate are disposed in a non-contact state. The display device according to item.
JP2005019999A 2005-01-27 2005-01-27 Display device Withdrawn JP2006210113A (en)

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