200921740 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種場發射裝置，尤其涉及一種場發射像 素管。 【先前技術】 奈米碳管（Carbon Nanotube, CNT)係一種新型碳材 料，由曰本研究人員工屮邮在1991年發現，請參見”办以“ Microtubules of Graphitic Carbon", S. Iijima, Naturej ν〇1·354’ p56 (1991)。奈米碳管具有極大的長徑比（其長度 在微米量級以上，直徑只有幾個奈米或幾十個奈米f 良好的導電導熱性能，並且還有很好的機械強度和良好的 化學穩定性，這些特性使得奈米碳管成為一種優良的場發 $材料。因此’奈米碳管在場發射裝置令的應用成為目‘ 不米科技領域的一個研究熱點。 狀齐線係由超順排奈米碳管陣列製備出來的線 山二1、厌& ;首先，從超順排奈米碳管陣列抽出奈米 ，官薄膜’再經有機溶液收縮成纖維狀或用旋轉的方法捭 成絕狀。。這種線狀奈米碳管材料具有宏觀的尺度，對其進 :-些刼作極為方便。這種奈米碳管長線的端面： 的％發射能力，係-種良好的場發射電子源。/、 場發射像素管係奈米碳管場發射電 用領域。先前的場發射像素管包括 要應 …個出光部，該出光部的内壁依次㈡光該:體 %極層，該殼體内部與該出光部相 刀層和 該陰極發射體肖起, 陰極毛射體， 射體包括—奈米碳管長線作為場發射電子源。當 6 200921740 發射像素管工作時，在陽極 成電場，通過雷尸从ro + κ拉之間加上電壓形 .子穿透陽極==:吏除極發射體尖端發射出電子，電 層轟擊螢光粉層，發出可見光。 為要陰極發射體的像素管，因 制，幾何尺=大體内一表面上，受製備工藝限 限制，例如的場發射像素管的應用受到了極大的 的大型户外續干二2素官無法用來組裝具有較高解析度 素管，由於：二:2的具有編管陰極發射體的像 藝難度大，良.車：與％極需要準確對準，製造工 將螢光粉層i覆 前的像素管製傷方法，先 有機物，然後在有機又:：:父，在螢光,層上沈積一層 發掉，製造工藝較複雜。曰又陽極層’最後將有機物蒸 有鐾於此，据供—插 素管實為必要。種尺寸小，更易於製造的場發射像 【發明内容】 一陰極種:二，包括;殼體以及置於殼體内.的 置，JL中_ ^ 9 陽極，該陰極與陽極之間間隔設 陰極發:二::::=撐體與，發射體，該 括-端面，所述登=== 接’其中’該陽極包 曰°又置在S亥1¼極端面上。 面。斤述的端面為拋光的平面'半球面、球面、錐面或凹 200921740 置在=陽::端通過陽極爾接到毅體外，端面設 所述的陽極為一金屬桿’該金屬桿 1厘米。 做木主 所述的陰極發射體為一夺米碏瞢 。 或單根奈米碳纖維。線、早根奈米碳管 所述的奈米碳管長線包括一電子發射端，該電子發射 端為奈米碳管長線遠離陰極支撐體的一端。 所述的電子發射端包括多個突出的場發射尖端。 所述的場發射尖端的頂端突出有—根奈米碳管。 —所述的電子發射端正對陽極端面設置、斜對陽極端面 投置或設置在陽極端面附近。 所述的電子發射端與陽極端面的距離小於5毫米。 所述的殼料-中空透明的圓柱體、立方體或三棱柱。 所述的場發射像素管進—步包括—吸氣劑位於殼體 内。 '相較于先前技術，所述的場發射像素管的陰極發射體 為奈米碳管長線，陽極為—個金屬桿，且該陽極端面設置 有^光粉層，該螢光粉層受電子激發後發光。該場發射像 素官具有以下優點：第一，螢光粉層設置在陽極端面上， 因此這種場發射像素管的體積小，發光面積僅為毫米量 級，還可以更小。可以用來組裝具有較高解析度的大型戶 外顯示器。第二，這種場發射像素管中陰極與陽極無需精 確對準，因此，更容易製造。第三，這種場發射像素管採 200921740 -用金屬桿作為陽極，製備成本低，易於實現大規模生產使 用。 '【實施方式】 以下將結合附圖對本技術方案作進—步的詳細說 日月。 、’。 請參閱圖1，本技術方案實施例提供—種場發射像素 S 100’其包括一忒體102, 一陰極104, 一螢光粉層11〇, 一陽極112以及一陰極引線116和一陽極引線114。該陰 極104與陽極Π2間隔設置於殼體1〇2内。該陰極 包括一陰極支撐體106與一陰極發射體1〇8。該陰極支撐 體106的第一端與陰極發射體1〇8 一端電性連接，第二 端通一陰極引線116電性連接到殼體1〇2外。該陽極112 的一端包括一端面120。該螢光粉層11〇設置在陽極112 端面120上。該陽極112遠離端面12〇的另一端通過一陽 極引線114電性連接到殼體102外。 所述殼體102為一真空密封的結構。該殼體1〇2的 一端包括一出光部124，其與端面12〇相對。該殼體1〇2 材料為透明材料如：石英石或玻璃。在本實施例中， 該殼體102為-中空玻璃圓柱體，且該圓柱體直徑為工 毫米至5毫米，尚度為2毫米至5毫米。可以理解，該 殼體102還可以係中空的立方體、三棱柱或其他多邊形 棱柱，本領域技術人員可以根據實際情況進行選擇。 曰所述陰極支撐體1〇6為一導電體，如：金屬絲或金屬 杯該陰極支撐體106形狀不限，且能夠導熱並具有一 9 200921740 定強度。本實施例中該陰極支撐體1〇6優選為鎳絲。 所述的陰極發射體108可以選自奈米碳管長線、單 根奈米碳管、單根奈米碳纖維或其他場發射電子源。本 實施例中，陰極發射體108優選為一奈米碳管長線。該 奈米碳管長線的長度為0.1毫米至10毫米，直徑為丄微 米至100微米。該奈米碳管長線係由多個平行的首尾相 連的奈米碳管束組成的束狀結構或由多個首尾相連的奈 米石厌f束組成的纟父線結構，該相鄰的奈米碳管束之間通 過凡德瓦爾力緊密結合’該奈米碳管束中包括多個首尾 相連且定向排列的奈米碳管。該奈米碳管長線中的太米 :炭管為單壁、雙壁或多壁奈米碳管。該奈米碳管的長度 祀圍為10〜100微米，且奈米碳管尖端的直捏小於5 ^ 米該奈米蛟官長線包括一電子發射端122。請表見圖2， 該電子發射端122可以包括多個突出的場發射尖端300。 ，場發射夹端編的頂端突出有一根奈米碳管繼。請參 ’圖3’從奈米碳管長線的電子發射端122的掃描電鏡照 片可以看出該電子發射端勿扭夕 拄 对知包括多個突出的場發射尖端。 〇月> 閱圖4’從奈米碳管長後的帝 长踝的电子發射端122的透射電 、兄“?、月上，可以看出条半石声总@仏丄 w 卡反δ長線中的場發射尖端的頂 %>大出有一根奈米碳管。 所述的陽極112為—導雷辦,. 等電體，如.金屬桿。該陽極 112形狀不限’且能夠導 j命熱並具有一定強度。本實施例 中’陽極112優選為銅金屬浐 _ . ^ ^ 、 Μ 4^ 2^ 1 Γ-, 。屬杯。5亥銅金屬桿直徑為100200921740 IX. Description of the Invention: [Technical Field] The present invention relates to a field emission device, and more particularly to a field emission pixel tube. [Prior Art] Carbon Nanotube (CNT) is a new type of carbon material. It was discovered in 1991 by the staff of this researcher. Please refer to "Microtubules of Graphitic Carbon", S. Iijima, Naturej 〇1·354' p56 (1991). The carbon nanotubes have a very large aspect ratio (the length of which is above the order of micrometers, the diameter is only a few nanometers or dozens of nanometers. Good electrical and thermal conductivity, and also good mechanical strength and good chemistry. Stability, these characteristics make the carbon nanotubes an excellent field material. Therefore, the application of nanocarbon tubes in field emission devices has become a research hotspot in the field of technology. The tanzanite 2, anaesthetic & first prepared from the array of super-sequential carbon nanotubes, the thin film of the official film is then shrunk into a fibrous form or rotated by an organic solution. The linear carbon nanotube material has a macroscopic scale, and it is very convenient for the process: the end face of the long carbon nanotube: the % emission ability, the system is good. The field emission electron source. /, field emission pixel tube is the field of carbon nanotube field emission. The previous field emission pixel tube includes a light exiting portion, and the inner wall of the light exiting portion is sequentially (2) light: body % pole a layer, the inside of the housing and the light exiting portion The scalpel layer and the cathode emitter are oscillated, and the cathode body, the emitter includes a long line of carbon nanotubes as a field emission electron source. When 6 200921740 emits a pixel tube to work, an electric field is formed at the anode, and the corpse is passed from the ro + κ pull between the voltage form. Sub-aperture anode ==: 吏 吏 发射 emitter tip emits electrons, the electric layer bombards the phosphor layer, emits visible light. For the cathode tube of the cathode emitter, due to the system, geometry Ruler = large body on a surface, limited by the preparation process limit, for example, the application of the field emission pixel tube has been greatly reduced by the large outdoor continuous dry 2 2 official can not be used to assemble a higher resolution tube, due to: : 2 has the art of difficulty in braiding the cathode emitter, good car: the pole needs to be accurately aligned with the % pole, the manufacturer will control the pixel before the phosphor layer i is covered, first organic matter, then organic Also:::Father, in the fluorescent layer, a layer of hair is deposited on the layer, and the manufacturing process is more complicated. The anode layer and the anode layer finally melt the organic matter here, and it is necessary to supply the tube. The seed size is small. Easier to manufacture field emission like [invention Capacitor: a cathode species: two, including; the housing and the placement in the housing, JL _ ^ 9 anode, the cathode and the anode are separated by a cathode: two:::: = support and The emitter body, the bracket-end surface, the boarding === connecting 'where' the anode package is placed on the Shai 11⁄4 extreme surface. The surface of the surface is a polished plane 'hemispherical surface, spherical surface, cone The surface or concave 200921740 is placed at the = yang:: end through the anode and connected to the outside of the body. The anode is provided with a metal rod of the metal rod. The metal rod is 1 cm. The cathode emitter described by the wood is a rice stalk. Or a single nano carbon fiber. The long carbon nanotube line of the wire, the early root carbon nanotube includes an electron emitting end, which is an end of the long carbon nanotube line away from the cathode support. The electron emitting end includes a plurality of protruding field emission tips. The top end of the field emission tip protrudes with a carbon nanotube. - The electron-emitting end is disposed opposite the anode end face, obliquely to the anode end face, or disposed adjacent the anode end face. The distance between the electron emitting end and the end face of the anode is less than 5 mm. The shell material - a hollow transparent cylinder, a cube or a triangular prism. The field emission pixel tube further includes - the getter is located in the housing. Compared with the prior art, the cathode emitter of the field emission pixel tube is a long line of carbon nanotubes, the anode is a metal rod, and the anode end surface is provided with a light powder layer, and the phosphor powder layer is electron-accepted. Luminescence after excitation. The field emission pixel officer has the following advantages: First, the phosphor layer is disposed on the anode end face, so that the field emission pixel tube has a small volume, and the light-emitting area is only on the order of millimeters, and can be smaller. Can be used to assemble large outdoor displays with higher resolution. Second, the cathode and anode of such field emission pixel tubes do not need to be precisely aligned and, therefore, easier to manufacture. Third, the field emission pixel tube adopts 200921740 - using a metal rod as an anode, which is low in production cost and easy to implement for mass production. '[Embodiment] The following is a detailed description of the technical solution in the following with reference to the accompanying drawings. , '. Referring to FIG. 1 , the embodiment of the present invention provides a field emission pixel S 100 ′ including a body 102 , a cathode 104 , a phosphor layer 11 , an anode 112 , a cathode lead 116 , and an anode lead . 114. The cathode 104 is disposed in the casing 1〇2 from the anode Π2. The cathode includes a cathode support 106 and a cathode emitter 1〇8. The first end of the cathode support 106 is electrically connected to one end of the cathode emitter 1〇8, and the second end is electrically connected to the outside of the housing 1〇2 via a cathode lead 116. One end of the anode 112 includes an end surface 120. The phosphor layer 11 is disposed on the end face 120 of the anode 112. The other end of the anode 112 away from the end face 12 is electrically connected to the outside of the casing 102 via an anode lead 114. The housing 102 is a vacuum sealed structure. One end of the housing 1〇2 includes a light exit portion 124 which is opposite to the end surface 12〇. The housing 1〇2 material is a transparent material such as quartz or glass. In the present embodiment, the housing 102 is a hollow glass cylinder having a diameter of from 5 mm to 5 mm and a degree of from 2 mm to 5 mm. It can be understood that the housing 102 can also be a hollow cube, a triangular prism or other polygonal prism, and can be selected by a person skilled in the art according to the actual situation. The cathode support 1〇6 is an electric conductor such as a wire or a metal cup. The cathode support 106 is not limited in shape and is capable of conducting heat and has a strength of 9 200921740. In the present embodiment, the cathode support 1〇6 is preferably a nickel wire. The cathode emitter 108 can be selected from the group consisting of a carbon nanotube long wire, a single carbon nanotube, a single nanocarbon fiber, or other field emission electron source. In the present embodiment, the cathode emitter 108 is preferably a long carbon nanotube tube. The long length of the carbon nanotubes is from 0.1 mm to 10 mm in length and from 丄 micrometers to 100 μm in diameter. The carbon nanotube long-line is a bundle structure composed of a plurality of parallel end-to-end connected carbon nanotube bundles or a 纟 parent line structure composed of a plurality of end-to-end connected nano-stone bundles, the adjacent nano-structure The carbon tube bundles are tightly coupled by van der Waals force. The carbon nanotube bundle includes a plurality of end-to-end aligned carbon nanotubes. The rice in the long line of the carbon nanotube: the carbon tube is a single-walled, double-walled or multi-walled carbon nanotube. The length of the carbon nanotubes is 10 to 100 micrometers, and the straight pinch of the tip of the carbon nanotubes is less than 5^ meters. The nanowires include an electron emitting end 122. Referring to FIG. 2, the electron emitting end 122 can include a plurality of protruding field emission tips 300. At the top of the field emission clip end, there is a nano carbon tube. Referring to Fig. 3', a scanning electron microscope photograph of the electron-emitting end 122 of the long carbon nanotube line shows that the electron-emitting end is not twisted. The pair includes a plurality of protruding field emission tips. 〇月> Read Figure 4' from the electron-emitting end 122 of the Emperor 踝 of the long carbon tube, the transmission of electricity, brother "?, on the moon, you can see the total half-stone sound @仏丄w card anti-δ long line The top % of the field emission tip is larger than a carbon nanotube. The anode 112 is a lightning guide, an isoelectric body, such as a metal rod. The anode 112 is not limited in shape and can be guided. The heat of the heat is a certain strength. In the present embodiment, the anode 112 is preferably copper metal 浐_. ^ ^ , Μ 4^ 2^ 1 Γ-, which belongs to the cup. The diameter of the 5th copper metal rod is 100.
微水至1厘米。可以邳缸 _ ^ A 解，該銅金屬桿直徑可以根據實 200921740 •際茜要選擇。所述的端面120設置於陽極112靠近電子發 射端122的一端，且為一拋光端面120。該拋光的端面 120可以為平面、半球面、球面、錐面、凹面或其他形狀 端面。該拋光的端面12〇可以反射螢光粉層11〇發出的光。 所述的榮光粉層110設置在陽極112的端面120上。 该螢光粉層110的材料可以為白色螢光粉，也可以為單色 螢光粉，例如紅色，綠色，藍色螢光粉等，當電子轟擊 r螢光粉層U0時可發出白光或其他顏色可見光。該螢光粉 層U〇可以採用沈積法或塗敷法設置在陽極112的一端的 端面120上。該螢光粉層110厚度為5至50微米。 所述的陰極發射體108與陽極112的設置可以為多種 $置關係’請參見圖5至圖8。可以使電子發射端122與 陽f 112的端面12〇正對設置；可以使奈米碳管長線與金 2桿軸向成一銳角，使電子發射端122與端面12〇斜對 &置，可以使奈米碳管長線與金屬桿軸向互相垂直或平 I行，使電子發射端122設置在端面12〇附近。其中，電 子發射端122與端面12〇距離小於5毫米。、 另外，該場發射像素管100進一步包括—位於殼體 1〇2内的吸氣劑118 ’用於吸附場發射像素管内殘餘氣 體^維持場發射像素管内部的真空度。該吸氣冑ιΐ8可以 為洛，型吸氣劑金屬薄膜，在殼體1〇2封接後通過高頻 加熱瘵鍍的方式形成於靠近陰極1〇4的殼體内壁 上。該吸氣Μ 118也可以為非蒸散型吸氣劑，固定在陰極 支樓體106上。所述的非蒸散型吸氣劑U8材料主要包括 11 200921740 鈦、锆、铪、钍、稀土金屬及其合金。 ⑽工作時’在陽極112和陰極 成電場，通過電場作用使陰極發射體 大㈣電子發㈣122發射出電子 極112,轟擊陽極矣；μ & , 电卞主J运味 =作極112表面的螢光粉層則，發出可見光。 ：分可見光直接透過殼體1〇2 -端的出光部124 •，—部分可見光則、經過陽極112端面12〇反射後， ^過殼體U)2-端的出光部124㈣。該場發射像素管， 由於將螢光粉層11G設置於陽極112端面i2Q上，避免了 製備工藝限制’所以體積可做 ...^ 檟J以做到更小，其發光面積僅 2未’該場發射像素管中陰極與陽極益需 精確對準，因此，更容易製造。另外，這種場發射像; 管採用金屬桿作為陽極，製備成本低，易模 生產使用。 冑兄大規杈 請參閱目9,本技術方案實施例還進一步提供— 射像素管100的製備方法’具體包括以下步驟：、^ 步驟一，提供一玻璃芯柱，該玻璃芯柱包括兩個金 屬絲分別作為陰極引線116與陽極引線114。 所述的兩個金屬絲被玻璃固定，並被玻璃隔開，妒 成Η形狀玻璃怒柱。該金屬絲為可以實現和玻螭熔的 材料’通常為杜美絲、鎢絲、翻絲等。 、、 步驟二，提供—金屬桿作為陽極⑴，並將該陽極112 與上述陽極引線114 一端電性連接。 將作為陽極112的金屬桿的一端通過點焊技術與陽 12 200921740 極引線114 —端電性連接。本技術方案實施例中，該金屬 桿優選的為銅金屬桿，直徑為100微米至1厘米。將金 屬桿的另一端端面120拋光，該拋光端面120可以為平 面半球面、球面、錐面、凹面或其他形狀端面。 a 乂驟一’提供一螢光粉，並將該螢光粉設置於上述 陽極112 —端的端面12〇上，形成一螢光粉層u〇。 將上述螢光粉採用塗敷或沈積的方法設置於陽極 U2拋光的端面120。該螢光粉可以為白色螢光粉，也可 以為單色螢光粉，例如紅色，綠色，藍色螢光粉等。 步驟四，提供一金屬絲作為陰極支撐體106，並將該 陰極支撐體106與上述陰極引線116 一端電性連接。 將陰極支撐體1〇6與陰極引線116 一端電性連接的方 法為點焊法。本技術方案實施例中，陰極支撐體ι〇6優 選為錄絲。 步驟五，提供一陰極發射體1〇8，並將該陰極發射體 (108與陰極支擇體1Q6遠離陰極引線ιΐ6的—端電性連 接’形成一場發射像素管1〇〇預製體。 陰極發射體108為奈米碳管長線，單根奈米碳管， 單根奈米碳纖維或其他場發射電子源。本實施例中，陰 極發射體108優選為奈米碳管長線。其中，該奈米碳管 長線的長度為（U毫米至1〇毫米，直徑為工微米至工毫 米。奈米石炭管長線通過導電膠與陰極支樓體1〇6 一端電 !生連接田使用奈米石反官長線作為陰極發射體⑽時， 製備讓陰極發射體108具體包括以下步驟： 13 200921740 首先，提供一超順排奈米碳管陣列形成於一矽基板 上0 一其次，從上述超順排奈米碳管陣列中抽出一奈米碳 官溥獏或一奈米碳管絲，通過使用有機溶劑或者施加機 械外力處理該奈米碳管薄膜或者奈来碳管絲 碳管長線。 ’丁…卞 +從超順排奈米碳管陣列中抽出一束奈米碳管時，相 鄰的奈米碳管由於凡德瓦爾力的作用而相互連接在一起 而形成一奈米碳管薄膜或一奈米碳管絲。本實施例中， 也可以採用扭轉紡紗技術製備一奈米碳管長線。 最後，使上述奈米碳管長線斷裂，從而得到一陰極 發射體108。 = 上述使奈米碳管長線斷裂的方法為機械切割法或鐳 射燒灼熔斷法。奈米碳管長線斷裂後，在中斷點形成兩 個電子發射端122。其中，採用機械切割法得到的電子發 射端m包括多個平行排列且長度—致的奈米碳管束： 採用鐳射燒灼熔斷法得到的電子發射端122包括多個突 出的％發射尖端300，且每個場發射尖端3〇〇的頂端突出 有一根奈米碳管302。 步驟六，提供一玻璃管作為殼體1〇2，將上述場發射 像素管100預製體封裝在玻璃管内，得到一場發射像 管 100。 ’、 玻璃管為一端開口，另—端封口的玻璃管。封裝具 體包括以下步驟： 14 200921740 預製體通過管壁裝 密封時在密封處留 首先，將上述場發射像素管1〇〇 入該玻璃管内，並對開口進行密封， 一排氣孔。 其-人’將該排氣孔外接真空果，用以將殼豸1〇2抽 真空，使殼體102内達到—定的真空度。 最後，始、封排氣孔，得到所述場發射像素管。 可以理解，在封裝上述場發射像素管前，進— ㈣可以在場發射像素f 1G㈣設置__吸氣劑ιΐ8，該吸 氣劑118設置於殼體ι〇2内壁。 本只施例中，採用機械切割法或錯射燒灼炫斷法製 備奈米蛱官長線作為陰極發射體1〇8，製備方法簡單，且 奈米碳管長線中包括多個場發射尖端3⑻，可以有效降低 該陰極發射體108的電場遮罩效應。 細上所述，本發明確已符合發明專利之要件，遂依法 ^專利巾請。惟’以上所述者僅為本發明之較佳實施例， 不能以此限制本案之申請專利範圍。舉凡熟悉本案技藝 =人士援依本發明之精神所作之等效修飾或變化，皆應^ 蓋於以下申請專利範圍内。 【圖式簡單說明】Micro water to 1 cm. It can be solved by 邳 ^ _ A, the diameter of the copper metal rod can be selected according to the actual 200921740. The end surface 120 is disposed at an end of the anode 112 near the electron emission end 122 and is a polished end surface 120. The polished end face 120 can be a flat, hemispherical, spherical, tapered, concave or other shaped end face. The polished end face 12 〇 can reflect the light emitted by the phosphor layer 11 . The glory powder layer 110 is disposed on the end surface 120 of the anode 112. The material of the phosphor layer 110 may be white fluorescent powder or monochromatic fluorescent powder, such as red, green, blue fluorescent powder, etc., when the electron bombards the fluorescent powder layer U0, it may emit white light or Other colors are visible. The phosphor layer U can be disposed on the end face 120 of one end of the anode 112 by a deposition method or a coating method. The phosphor layer 110 has a thickness of 5 to 50 microns. The arrangement of the cathode emitter 108 and the anode 112 can be in a variety of relationships. See Figures 5-8. The electron emitting end 122 can be disposed opposite to the end surface 12 of the anode f 112; the length of the carbon nanotube long line and the axis of the gold rod can be made an acute angle, so that the electron emitting end 122 and the end surface 12 are skewed & The carbon nanotube long wire and the metal rod are axially perpendicular or flat to each other such that the electron emission end 122 is disposed near the end face 12〇. Wherein, the distance between the electron emitting end 122 and the end face 12 is less than 5 mm. In addition, the field emission pixel tube 100 further includes a getter 118' located in the housing 1〇2 for adsorbing the residual gas in the field emission pixel tube to maintain the vacuum inside the field emission pixel tube. The getter 胄ιΐ8 may be a Luo, type getter metal film which is formed on the inner wall of the casing close to the cathode 1〇4 by high frequency heating 瘵 plating after the casing 1〇2 is sealed. The getter 118 may also be a non-evaporable getter fixed to the cathode block body 106. The non-evaporable getter U8 material mainly comprises 11 200921740 titanium, zirconium, hafnium, tantalum, rare earth metals and alloys thereof. (10) When working, 'the electric field is formed at the anode 112 and the cathode, and the cathode emitter is large (4). The electron emitter (four) 122 emits the electron pole 112, bombarding the anode 矣; μ &, the electric 卞 main J Yun = the surface of the pole 112 The phosphor layer emits visible light. : The visible light directly passes through the light exit portion 124 of the housing 1 〇 2 end, and the partial visible light passes through the end surface 12 of the anode 112 and then passes through the light exit portion 124 of the second end of the housing U). The field emission pixel tube, since the phosphor powder layer 11G is disposed on the end surface i2Q of the anode 112, the preparation process limitation is avoided, so the volume can be made...^ 以J to be smaller, and the light-emitting area is only 2' The cathode and anode of the field emission pixel tube need to be precisely aligned, and therefore, it is easier to manufacture. In addition, the field emission image; the tube uses a metal rod as the anode, and the preparation cost is low, and the mold is easy to produce and use. Please refer to item 9. The embodiment of the present technical solution further provides that the method for preparing the pixel tube 100 includes the following steps: Step 1 : Providing a glass core column, the glass core column includes two metals. The wires serve as a cathode lead 116 and an anode lead 114, respectively. The two wires are fixed by glass and separated by a glass to form a glass-shaped anger column. The wire is a material that can be melted with glass, typically Dumet wire, tungsten wire, wire twist, and the like. And, in the second step, a metal rod is provided as the anode (1), and the anode 112 is electrically connected to one end of the anode lead 114. One end of the metal rod as the anode 112 is electrically connected to the end of the anode 12 114 by a spot welding technique. In the embodiment of the technical solution, the metal rod is preferably a copper metal rod having a diameter of 100 μm to 1 cm. The other end face 120 of the metal rod is polished, and the polished end surface 120 may be a flat hemispherical surface, a spherical surface, a tapered surface, a concave surface or other shaped end surface. a step 1 provides a phosphor powder, and the phosphor powder is disposed on the end face 12 of the anode 112 at the end to form a phosphor layer u〇. The above phosphor powder is applied to the polished end face 120 of the anode U2 by coating or deposition. The phosphor powder may be a white phosphor or a monochromatic phosphor such as red, green or blue phosphor. In step four, a wire is provided as the cathode support 106, and the cathode support 106 is electrically connected to one end of the cathode lead 116. The method of electrically connecting the cathode support 1〇6 to one end of the cathode lead 116 is a spot welding method. In the embodiment of the technical solution, the cathode support ι 6 is preferably a recording wire. In step five, a cathode emitter 1〇8 is provided, and the cathode emitter (108 is electrically connected to the end of the cathode support 1Q6 away from the cathode lead ι6) to form a field emission pixel tube 1〇〇 preform. The body 108 is a long carbon nanotube line, a single carbon nanotube, a single nano carbon fiber or other field emission electron source. In this embodiment, the cathode emitter 108 is preferably a long carbon nanotube tube. The length of the long length of the carbon tube is (U mm to 1 mm, and the diameter is from micron to millimeter. The long line of the carboniferous tube is electrically connected to the cathode of the cathode building body through the conductive rubber. The raw connection field uses the nanometer stone anti-official When the long line is used as the cathode emitter (10), the preparation of the cathode emitter 108 specifically includes the following steps: 13 200921740 First, an array of super-sequential carbon nanotubes is formed on a substrate, followed by a super-aligned nanometer from the above. A carbon nanotube or a nano carbon tube wire is extracted from the carbon tube array, and the carbon nanotube film or the carbon nanotube long carbon wire is treated by using an organic solvent or applying a mechanical external force. '丁...卞+ From super smooth When a bundle of carbon nanotubes is extracted from the carbon nanotube array, adjacent carbon nanotubes are connected to each other by the action of van der Waals force to form a carbon nanotube film or a nano carbon tube filament. In the embodiment, a twisted spinning technique can also be used to prepare a long carbon nanotube long line. Finally, the long carbon nanotubes are broken to obtain a cathode emitter 108. The above method for breaking the long carbon nanotubes is Mechanical cutting method or laser cauterization melting method. After the long line of the carbon nanotube is broken, two electron emitting ends 122 are formed at the breaking point. Among them, the electron emitting end m obtained by the mechanical cutting method includes a plurality of parallel arrays and lengths. Nano carbon tube bundle: The electron emission end 122 obtained by the laser cauterization melting method includes a plurality of protruding % emission tips 300, and a carbon nanotube 302 protrudes from the top end of each field emission tip 3〇〇. Step 6 A glass tube is used as the casing 1〇2, and the field emission pixel tube 100 is pre-formed in a glass tube to obtain a field emission tube 100. ', the glass tube is open at one end, and the other end is sealed. The glass tube. The package specifically includes the following steps: 14 200921740 When the preform is sealed through the wall of the tube, the first place is to seal the first field emission pixel tube 1 into the glass tube, and the opening is sealed, and a vent hole is sealed. The person-person's external venting hole is used to evacuate the casing 豸1〇2 to achieve a certain degree of vacuum in the casing 102. Finally, the vent hole is sealed and the field emission is obtained. It can be understood that, before encapsulating the above-mentioned field emission pixel tube, (4) a field emission pixel f 1G (4) may be provided with __ getter ι 8 , and the getter 118 is disposed on the inner wall of the housing ι 2 . In the example, the nano-manufactured long line is prepared by the mechanical cutting method or the mis-fired burning method as the cathode emitter 1〇8, and the preparation method is simple, and the plurality of field emission tips 3(8) are included in the long line of the carbon nanotube, which can effectively reduce The electric field masking effect of the cathode emitter 108. As described above, the present invention has indeed met the requirements of the invention patent, and is legally required. However, the above description is only a preferred embodiment of the present invention, and the scope of the patent application of the present invention cannot be limited thereto. Anyone familiar with the skill of the case = equivalent modifications or changes made by the person in accordance with the spirit of the present invention shall be covered by the following patent application. [Simple description of the map]
係本技術方案實施例的場發射像素管的結構示意 長線的電子發射 圖2係本技術方案實施例的奈米碳管 端放大示意圖。The structure of the field emission pixel tube of the embodiment of the present technical solution is shown as a long-line electron emission. FIG. 2 is an enlarged schematic view of the carbon nanotube end of the embodiment of the present technical solution.
係本技術方案實施例的奈米碳管長線的電子發射 15 200921740 端的掃描電鏡照片。 圖4係本技術方案實施例的奈米碳管長線的場發射尖 '端的透射電鏡照片。 大 圖5至圖8係本技術方案實施例的陰極發射體與陽極 的位置關係示意圖。 圖 的流程示意圖。 【主要元件符號說明】 場發射像素管 100 殼體 102 陰極 104 陰極支撐體 1〇6 陰極發射體 108 螢光粉層 110 陽極 112 陽極引線 114 陰極引線 116 吸氣劑 118 端面 12〇 電子發射端 122 出光部 124 %'發射尖端 3〇〇 奈米碳管 302 的製備方法 16Electron emission of a long carbon nanotube line according to an embodiment of the present technical solution 15 Scanning electron micrograph of the end of 200921740. Fig. 4 is a transmission electron micrograph of the tip end of the field emission of the long carbon nanotube tube of the embodiment of the present technical solution. 5 to 8 are schematic diagrams showing the positional relationship between the cathode emitter and the anode of the embodiment of the present technical solution. Diagram of the flow of the diagram. [Main component symbol description] Field emission pixel tube 100 Case 102 Cathode 104 Cathode support 1〇6 Cathode emitter 108 Fluorescent powder layer 110 Anode 112 Anode lead 114 Cathode lead 116 Getter 118 End face 12〇 Electron emitting end 122 Light-emitting part 124% 'emissive tip 3〇〇 carbon nanotube 302 preparation method 16