200805416 ; 九、發明說明： " 【發明所屬之技術領域】 本發明涉及一種場發射元件，尤其涉及一種雙面發光 之場發射像素管。 【先前技術】 場發射電子源以及利用該電子源轟擊螢光物質而發光 之場發射發光技術，已經在場發射平面顯示器等領域得到 > 應用。這種場發射技術係在真空環境下，利用外加電場作 用將尖端之電子激發出來，電子轟擊螢光粉發出可見光從 而進行顯示。在傳統場發射電子源中，一般採用微細鉬金 屬尖端、矽尖端作為電子發射端，隨著奈米技術之發展， 最近還採用奈米碳管作為電子發射端。 為了有效的利用螢光粉之發光效率，像素管一般ϊ作 在ίο千伏左右之高壓下，然而碳奈米管在強電壓下很容易 損壞，導致發射不穩定。 I 【發明内容】 有鑒於此，提供一種可以在高壓下穩定工作之場發射 元件實為必要。 一種雙面發光之場發射像素管，其包括：一個中空殼 體，該殼體具有一個第一出光部及一個第二出光部，該第 一出光部與該第二出光部相對，該第一出光部之内壁依次 有第一螢光層和第一陽極層’該第二出光部之内壁依次有 第二螢光層和第二陽極層。所述殼體内部係真空密封的， 並且在第一出光部和第二出光部之間有一個金屬筒，該金 200805416 屬筒内壁有一層經固化之奈米漿料層’該奈米漿料層含有 導電的奈米材料，該金屬筒與至少一個陰極電極電連接。 相對於先前技術，所述雙面發光之場發射像素管之金 屬筒對電場有很強的屏蔽作用’將含有碳奈米管之漿料塗 於金屬筒之内壁作為陰極，則可以有效的減弱碳奈米管周 圍的電場，使得碳奈米管可以在10千伏或更高的電壓下穩 定的工作。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a field emission element, and more particularly to a field emission pixel tube that emits light on both sides. [Prior Art] A field emission electron source and a field emission illuminating technology that illuminates by using the electron source to bombard a fluorescent substance have been applied in the field of field emission flat panel display and the like. This field emission technique excites the electrons at the tip by applying an external electric field in a vacuum environment, and the electron bombardment of the fluorescent powder emits visible light for display. In the conventional field emission electron source, the tip of the fine molybdenum metal and the tip of the crucible are generally used as the electron-emitting end. With the development of the nanotechnology, a carbon nanotube is recently used as the electron-emitting end. In order to effectively utilize the luminous efficiency of the phosphor powder, the pixel tube is generally operated at a high voltage of about kHz, but the carbon nanotube tube is easily damaged under a strong voltage, resulting in unstable emission. I SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a field emission element that can operate stably under high voltage. A double-emitting field emission pixel tube comprising: a hollow housing having a first light exiting portion and a second light exiting portion, the first light emitting portion being opposite to the second light emitting portion, the first The inner wall of the light exiting portion has a first phosphor layer and a first anode layer in turn. The inner wall of the second light exiting portion has a second phosphor layer and a second anode layer in sequence. The inside of the casing is vacuum-tight, and there is a metal cylinder between the first light-emitting portion and the second light-emitting portion, and the gold 200805416 has a layer of solidified nano-slurry layer on the inner wall of the cylinder. The layer contains a conductive nanomaterial that is electrically connected to at least one cathode electrode. Compared with the prior art, the metal tube of the double-sided illumination field emission pixel tube has a strong shielding effect on the electric field. The slurry containing the carbon nanotube tube is applied to the inner wall of the metal tube as a cathode, which can effectively weaken The electric field around the carbon nanotube allows the carbon nanotube to work stably at a voltage of 10 kV or higher.
【實施方式】 以下將結合附圖對本發明作進一步之詳細說明。 本實施例提供一種雙面發光之場發射像素管10。請^ 閱圖1及圖2，該場發射像素管1〇包括：一中空殼體 =殼體I2具有一第一出光部12〇及一第二出光部122, ^ 第一出光部120與該第二出光部122相對，該第—出光^ 120之内壁依次有第—螢光層14和第—陽極層 出光邰122之内壁依次有第二螢光層18和第二陽極層2〔 =述殼體12内部係真空密封的，並且在第—出光部邮 =-出光部122之間有-金屬冑22，該金屬冑22内辟、; 之奈米漿料層24。該金屬筒22與至少—陰 :^。 ’於本實施例中有兩個陰極電極 ，分別為第一p 極電極25和第二陰極電極26。 12為該餘㉔軸，財實施射，該㈤ 可以理解^r 該殼體12之材料為石英石或玻璃 ::理解的係，該殼體12選可以係中空的立方體 夕邊形棱柱，同時該毂體12之出光面可以為平以 7 200805416 ； 可以為球面或非球面，本領域技術人員可以根據實際情況 進行選擇。 所述第一螢光層14和第二螢光層18分別沈積在第一 出光部120和第二出光部122之内壁上。該第一螢光層14 和該第二螢光層18可以由白色螢光粉，或彩色螢光粉組 成。當電子轟擊第一螢光層14和第二螢光層18時可發出 白色或彩色可見光。所述第一陽極層16鍍在沈積有第一螢 • 光層14之第一出光部12〇内壁上並將第一螢光層14覆 蓋’起到導電的作用。所述第二陽極層20鍍在沈積有第二 榮光層18的第二出光部122内壁上並將第二螢光層18覆 蓋’起到導電的作用。 該第一陽極層16和第二陽極層20為金屬膜，具有良 好的導電性，在本實施例中，該第一陽極層16和該第厶陽 極層20為鋁膜。 於本實施例中，所述金屬筒22為一圓筒。可以理解的 • 係’該金屬筒還可以為方筒、多邊形筒等其他筒狀結構。 所述金屬筒22内壁有一層經固化的奈米漿料層24， 該奈米漿料層24含有導電的奈米材料，所述奈米材料可以 選自碳奈米管、碳奈米棒、碳60，碳奈米顆粒，以及導電 金屬或半導體的奈米管、奈米線、奈米棒、奈米帶，及其 昆合物中的任意一種，本實施例中選用碳奈米管。將配好 的奈米漿料層24塗敷於金屬筒22内壁並將其固化，最後 用橡皮摩擦金屬筒内壁，使更多的奈米漿料層24中的碳央 米管露頭’增強其導電性。金屬筒22對碳奈米管發射體& 200805416 屏蔽作用取決於奈米漿料層24邊緣與金屬筒22邊緣的距 離，距離越大，屏蔽作用越強。 所述金屬筒22通過第一陰極引線22〇及第二陰極引線 222分別與第一陰極電極25和第二陰極電極26電連接。 該第一陰極電極25與該第二陰極電極26穿過所述殼體12 並延伸至殼體12外部。在第一陰極電極25和第二陰極電[Embodiment] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings. This embodiment provides a field emission pixel tube 10 that emits light on both sides. Please refer to FIG. 1 and FIG. 2, the field emission pixel tube 1〇 includes: a hollow housing=the housing I2 has a first light exit portion 12〇 and a second light exit portion 122, and the first light exit portion 120 and The second light exiting portion 122 is opposite to the inner wall of the first light emitting layer 120, and the inner wall of the first phosphor layer 14 and the first anode layer exit pupil 122 are sequentially provided with a second phosphor layer 18 and a second anode layer 2 [= The inside of the casing 12 is vacuum-tight, and there is a metal crucible 22 between the first light-emitting portion and the light-emitting portion 122, and the metal crucible 22 is provided with a nano slurry layer 24. The metal cylinder 22 is at least - negative: ^. In the present embodiment, there are two cathode electrodes, which are a first p-electrode electrode 25 and a second cathode electrode 26, respectively. 12 is the remaining 24 axes, the implementation of the financial, the (f) can understand ^r the material of the housing 12 is quartz stone or glass: understanding system, the housing 12 can be hollow hollow cube-shaped prism, while The light-emitting surface of the hub body 12 can be flat to 7 200805416; it can be spherical or aspherical, and can be selected by those skilled in the art according to actual conditions. The first phosphor layer 14 and the second phosphor layer 18 are deposited on the inner walls of the first light exit portion 120 and the second light exit portion 122, respectively. The first phosphor layer 14 and the second phosphor layer 18 may be composed of white phosphor powder or color phosphor powder. White or colored visible light may be emitted when electrons strike the first phosphor layer 14 and the second phosphor layer 18. The first anode layer 16 is plated on the inner wall of the first light exit portion 12 of the first phosphor layer 14 and covers the first phosphor layer 14 to conduct electricity. The second anode layer 20 is plated on the inner wall of the second light exit portion 122 on which the second glory layer 18 is deposited and the second phosphor layer 18 is covered to function as a conductive layer. The first anode layer 16 and the second anode layer 20 are metal films and have good electrical conductivity. In the present embodiment, the first anode layer 16 and the third anode layer 20 are aluminum films. In the embodiment, the metal cylinder 22 is a cylinder. It can be understood that the metal can also be a square tube, a polygonal tube or the like. The inner wall of the metal cylinder 22 has a layer of cured nano-slurry 24, the nano-slurry layer 24 contains a conductive nano material, and the nano-material can be selected from carbon nanotubes, carbon nano-rods, A carbon nanotube, a carbon nanoparticle, and a conductive metal or semiconductor nanotube, a nanowire, a nanorod, a nanobelt, and a quinone thereof are used. In this embodiment, a carbon nanotube is used. The prepared nano slurry layer 24 is applied to the inner wall of the metal cylinder 22 and solidified, and finally the inner wall of the metal cylinder is rubbed with a rubber to make the carbon nanotubes outcrop in the more nano slurry layer 24 'enhanced. Electrical conductivity. The shielding effect of the metal cylinder 22 on the carbon nanotube emitter & 200805416 depends on the distance between the edge of the nanopulp layer 24 and the edge of the metal cylinder 22. The greater the distance, the stronger the shielding effect. The metal can 22 is electrically connected to the first cathode electrode 25 and the second cathode electrode 26 through the first cathode lead 22 and the second cathode lead 222, respectively. The first cathode electrode 25 and the second cathode electrode 26 pass through the housing 12 and extend to the outside of the housing 12. At the first cathode electrode 25 and the second cathode
極26牙過的邛位可採用玻璃封接技術密封，以保證殼體内 部之密封性。 該場發射像素管10進一步包括一個第一陽極電極28 和-個第二陽極電極30。該第一陽極電極28和第二陽極 電極30分別與第-陽極層16和第二陽極層2〇電連接。該 第一陽極電極28和第二陽極電極3〇穿過所述殼體12延伸 至殼體12外部。在第-陽極電極28和第二陽極電極犯穿 過的部位可採用玻璃封接技術密封，以保證殼體12内部之 密封性。 該場發射像素管1G進-步包括_吸氣劑32，用於亨 附場發射像素管内殘餘氣體，維持場發射像素f 1〇内部& 真空度。該吸氣劑32可以為蒸散型吸氣劑％金屬薄膜， 在殼體I2賴後通過高頻加熱蒸鍍的方法形成於靠近_ 一陰極電極25和第二陰極電極26的殼體12内壁上。鍍用 時需保證該吸氣劑32不會覆蓋到第_陽極層16和第二段 極層20，也不會造成陰極和陽極之間的短路。該吸氣劑3 也可以為非錢魏_，固定在靠近第―陰極電極25禾 第二陰極電極26的殼體12内壁上。 200805416 該場發射像素管10推—半h k ^ λι^ ^ ^^ 進乂包括一排氣孔34，該排氣 孔34外接真线’心將贿12 先 過排氣孔34使場發射德去黑m 土 行最後的封裝 素官1G達到—定的真空度後再進 28盘當第該像素管10工作時，分別、給第一陽極電極 28與弟一陰極電極25、 26 ^ u ^ ^ 弟一除極電極30與第二陰極電極 的太平轉成電場，通過電場作用金屬筒22内壁 碳奈米管發射出電子，電子穿透第一 阮木層16和第二陽極層2〇義擊 層18,發出可見夹。开目丄#弟螢先層14和第二螢光 ^ ^ ϋ見光一部分直接從第一出光部120 二:：一:分射在第一陽極㈣和第』 最終分騎㈣-以;極/ 2g將其反射並 ,、 ％丨i2U和弟二出光部122鼾屮。-夕 個這樣的場發射像素管卡夕 資訊顯示。 G㈣起來可以進行照明或雙面 屬筒:==所述雙面發光之場發射像素管的金 蔽作用’將含有碳奈米管的漿料塗 於金屬同的内壁作為陰極 定 圍的電場，使得碳夺f总二有效的減弱碳奈米管周 定的工作。可以在1G千伏或更高的電壓下穩 利申:十:述以::明符合發明專利要件’爰依法提出專 發明之範圍並不以上明之較佳實施方式，本 之人妹依本發明之精神所作之等效修飾或變化，皆= 200805416 蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明實施例提供的雙面發光之場發射像素管 的不意圖。 圖2係本發明實施例提供的雙面發光之場發射像素管 沿圖1剖面線Π的截面圖。 【主要元件符號說明】 雙面發光之場發射像素管 10 第一出光部 120 第二出光部 122 第一螢光層 14 殼體 12 第二螢光層 18 第一陽極層 16 第二陽極層 20 金屬筒 22 奈米漿料層 24 第一陰極電極 25 第二陰極電極 26 第一陽極電極 28 第二陽極電極 30 吸氣劑 32 排氣孔 34 11The poles of the pole 26 can be sealed with a glass sealing technique to ensure the tightness of the inside of the housing. The field emission pixel tube 10 further includes a first anode electrode 28 and a second anode electrode 30. The first anode electrode 28 and the second anode electrode 30 are electrically connected to the first anode layer 16 and the second anode layer 2, respectively. The first anode electrode 28 and the second anode electrode 3 are extended through the housing 12 to the outside of the housing 12. The portion where the first anode electrode 28 and the second anode electrode are worn may be sealed by a glass sealing technique to ensure the inner seal of the casing 12. The field emission pixel tube 1G further includes a getter 32 for accommodating the residual gas in the field emission pixel tube to maintain the field emission pixel f 1 〇 internal & vacuum. The getter 32 may be an oxidizing getter % metal film, which is formed on the inner wall of the casing 12 close to the cathode electrode 25 and the second cathode electrode 26 by high-frequency heating evaporation after the casing I2 is applied. . It is necessary to ensure that the getter 32 does not cover the first anode layer 16 and the second pole layer 20, and does not cause a short circuit between the cathode and the anode. The getter 3 may also be non-volatile, and is fixed to the inner wall of the casing 12 adjacent to the first cathode electrode 25 and the second cathode electrode 26. 200805416 The field emission pixel tube 10 pushes - half hk ^ λι^ ^ ^^ The inlet includes a venting hole 34, and the venting hole 34 is externally connected to the true line 'heart will bribe 12 first through the vent 34 to make the field launch The last package of the black m soil line 1G reaches a certain degree of vacuum and then enters the 28th disk. When the pixel tube 10 is operated, the first anode electrode 28 and the second cathode electrode 25, 26 ^ u ^ ^ are respectively given. The off-pole electrode 30 and the second cathode electrode are converted into an electric field, and an electric field acts on the inner wall of the metal cylinder 22 to emit electrons, and the electrons penetrate the first elm layer 16 and the second anode layer 2 Layer 18, with a visible clip. Open eye 丄 #弟萤先层14 and second fluorescent ^ ^ ϋ see part of the light directly from the first light-emitting part 120 two:: one: split in the first anode (four) and the first 』 ultimate ride (four) - to; / 2g reflects it, % 丨 i2U and the second light exit portion 122 鼾屮. - Such a field emission pixel tube card information display. G (4) can be used for illumination or double-sided cylinder: == the gold-shielding effect of the double-sided illumination field emission pixel tube'. Apply the slurry containing the carbon nanotube to the same inner wall of the metal as the electric field of the cathode. The carbon is used to reduce the total effectiveness of the carbon nanotubes. It can be stabilized at a voltage of 1G kV or higher: Ten: Describe:: In accordance with the requirements of the invention patents 爰 提出 提出 提出 提出 提出 提出 提出 提出 提出 专 专 专 专 专 专 专 较佳 较佳 较佳 较佳Equivalent modifications or changes made by the spirit of the spirit = 200805416 are covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a double-sided illumination field emission pixel tube according to an embodiment of the present invention. 2 is a cross-sectional view of the double-emitting field emission pixel tube of the embodiment of the present invention taken along line Π of FIG. [Main component symbol description] Double-sided light-emitting field emission pixel tube 10 First light-emitting portion 120 Second light-emitting portion 122 First fluorescent layer 14 Housing 12 Second fluorescent layer 18 First anode layer 16 Second anode layer 20 Metal cylinder 22 nano slurry layer 24 first cathode electrode 25 second cathode electrode 26 first anode electrode 28 second anode electrode 30 getter 32 vent hole 34 11